- optimize audio file reading

.gitmodules

@@ -0,0 +1,12 @@
+[submodule "src/libs/resiprocate"]
+	path = src/libs/resiprocate
+	url = git@git.sevana.biz:public/resiprocate.git
+	branch = sevana
+
+[submodule "src/libs/libsrtp"]
+	path = src/libs/libsrtp
+	url = git@git.sevana.biz:public/libsrtp.git
+	branch = master
+[submodule "src/libs/libraries"]
+	path = src/libs/libraries
+	url = git@git.sevana.biz:public/libraries.git

LICENSE_MPL.txt

@@ -0,0 +1,373 @@
+Mozilla Public License Version 2.0
+==================================
+
+1. Definitions
+--------------
+
+1.1. "Contributor"
+    means each individual or legal entity that creates, contributes to
+    the creation of, or owns Covered Software.
+
+1.2. "Contributor Version"
+    means the combination of the Contributions of others (if any) used
+    by a Contributor and that particular Contributor's Contribution.
+
+1.3. "Contribution"
+    means Covered Software of a particular Contributor.
+
+1.4. "Covered Software"
+    means Source Code Form to which the initial Contributor has attached
+    the notice in Exhibit A, the Executable Form of such Source Code
+    Form, and Modifications of such Source Code Form, in each case
+    including portions thereof.
+
+1.5. "Incompatible With Secondary Licenses"
+    means
+
+    (a) that the initial Contributor has attached the notice described
+        in Exhibit B to the Covered Software; or
+
+    (b) that the Covered Software was made available under the terms of
+        version 1.1 or earlier of the License, but not also under the
+        terms of a Secondary License.
+
+1.6. "Executable Form"
+    means any form of the work other than Source Code Form.
+
+1.7. "Larger Work"
+    means a work that combines Covered Software with other material, in 
+    a separate file or files, that is not Covered Software.
+
+1.8. "License"
+    means this document.
+
+1.9. "Licensable"
+    means having the right to grant, to the maximum extent possible,
+    whether at the time of the initial grant or subsequently, any and
+    all of the rights conveyed by this License.
+
+1.10. "Modifications"
+    means any of the following:
+
+    (a) any file in Source Code Form that results from an addition to,
+        deletion from, or modification of the contents of Covered
+        Software; or
+
+    (b) any new file in Source Code Form that contains any Covered
+        Software.
+
+1.11. "Patent Claims" of a Contributor
+    means any patent claim(s), including without limitation, method,
+    process, and apparatus claims, in any patent Licensable by such
+    Contributor that would be infringed, but for the grant of the
+    License, by the making, using, selling, offering for sale, having
+    made, import, or transfer of either its Contributions or its
+    Contributor Version.
+
+1.12. "Secondary License"
+    means either the GNU General Public License, Version 2.0, the GNU
+    Lesser General Public License, Version 2.1, the GNU Affero General
+    Public License, Version 3.0, or any later versions of those
+    licenses.
+
+1.13. "Source Code Form"
+    means the form of the work preferred for making modifications.
+
+1.14. "You" (or "Your")
+    means an individual or a legal entity exercising rights under this
+    License. For legal entities, "You" includes any entity that
+    controls, is controlled by, or is under common control with You. For
+    purposes of this definition, "control" means (a) the power, direct
+    or indirect, to cause the direction or management of such entity,
+    whether by contract or otherwise, or (b) ownership of more than
+    fifty percent (50%) of the outstanding shares or beneficial
+    ownership of such entity.
+
+2. License Grants and Conditions
+--------------------------------
+
+2.1. Grants
+
+Each Contributor hereby grants You a world-wide, royalty-free,
+non-exclusive license:
+
+(a) under intellectual property rights (other than patent or trademark)
+    Licensable by such Contributor to use, reproduce, make available,
+    modify, display, perform, distribute, and otherwise exploit its
+    Contributions, either on an unmodified basis, with Modifications, or
+    as part of a Larger Work; and
+
+(b) under Patent Claims of such Contributor to make, use, sell, offer
+    for sale, have made, import, and otherwise transfer either its
+    Contributions or its Contributor Version.
+
+2.2. Effective Date
+
+The licenses granted in Section 2.1 with respect to any Contribution
+become effective for each Contribution on the date the Contributor first
+distributes such Contribution.
+
+2.3. Limitations on Grant Scope
+
+The licenses granted in this Section 2 are the only rights granted under
+this License. No additional rights or licenses will be implied from the
+distribution or licensing of Covered Software under this License.
+Notwithstanding Section 2.1(b) above, no patent license is granted by a
+Contributor:
+
+(a) for any code that a Contributor has removed from Covered Software;
+    or
+
+(b) for infringements caused by: (i) Your and any other third party's
+    modifications of Covered Software, or (ii) the combination of its
+    Contributions with other software (except as part of its Contributor
+    Version); or
+
+(c) under Patent Claims infringed by Covered Software in the absence of
+    its Contributions.
+
+This License does not grant any rights in the trademarks, service marks,
+or logos of any Contributor (except as may be necessary to comply with
+the notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+No Contributor makes additional grants as a result of Your choice to
+distribute the Covered Software under a subsequent version of this
+License (see Section 10.2) or under the terms of a Secondary License (if
+permitted under the terms of Section 3.3).
+
+2.5. Representation
+
+Each Contributor represents that the Contributor believes its
+Contributions are its original creation(s) or it has sufficient rights
+to grant the rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+This License is not intended to limit any rights You have under
+applicable copyright doctrines of fair use, fair dealing, or other
+equivalents.
+
+2.7. Conditions
+
+Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
+in Section 2.1.
+
+3. Responsibilities
+-------------------
+
+3.1. Distribution of Source Form
+
+All distribution of Covered Software in Source Code Form, including any
+Modifications that You create or to which You contribute, must be under
+the terms of this License. You must inform recipients that the Source
+Code Form of the Covered Software is governed by the terms of this
+License, and how they can obtain a copy of this License. You may not
+attempt to alter or restrict the recipients' rights in the Source Code
+Form.
+
+3.2. Distribution of Executable Form
+
+If You distribute Covered Software in Executable Form then:
+
+(a) such Covered Software must also be made available in Source Code
+    Form, as described in Section 3.1, and You must inform recipients of
+    the Executable Form how they can obtain a copy of such Source Code
+    Form by reasonable means in a timely manner, at a charge no more
+    than the cost of distribution to the recipient; and
+
+(b) You may distribute such Executable Form under the terms of this
+    License, or sublicense it under different terms, provided that the
+    license for the Executable Form does not attempt to limit or alter
+    the recipients' rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+You may create and distribute a Larger Work under terms of Your choice,
+provided that You also comply with the requirements of this License for
+the Covered Software. If the Larger Work is a combination of Covered
+Software with a work governed by one or more Secondary Licenses, and the
+Covered Software is not Incompatible With Secondary Licenses, this
+License permits You to additionally distribute such Covered Software
+under the terms of such Secondary License(s), so that the recipient of
+the Larger Work may, at their option, further distribute the Covered
+Software under the terms of either this License or such Secondary
+License(s).
+
+3.4. Notices
+
+You may not remove or alter the substance of any license notices
+(including copyright notices, patent notices, disclaimers of warranty,
+or limitations of liability) contained within the Source Code Form of
+the Covered Software, except that You may alter any license notices to
+the extent required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+You may choose to offer, and to charge a fee for, warranty, support,
+indemnity or liability obligations to one or more recipients of Covered
+Software. However, You may do so only on Your own behalf, and not on
+behalf of any Contributor. You must make it absolutely clear that any
+such warranty, support, indemnity, or liability obligation is offered by
+You alone, and You hereby agree to indemnify every Contributor for any
+liability incurred by such Contributor as a result of warranty, support,
+indemnity or liability terms You offer. You may include additional
+disclaimers of warranty and limitations of liability specific to any
+jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+---------------------------------------------------
+
+If it is impossible for You to comply with any of the terms of this
+License with respect to some or all of the Covered Software due to
+statute, judicial order, or regulation then You must: (a) comply with
+the terms of this License to the maximum extent possible; and (b)
+describe the limitations and the code they affect. Such description must
+be placed in a text file included with all distributions of the Covered
+Software under this License. Except to the extent prohibited by statute
+or regulation, such description must be sufficiently detailed for a
+recipient of ordinary skill to be able to understand it.
+
+5. Termination
+--------------
+
+5.1. The rights granted under this License will terminate automatically
+if You fail to comply with any of its terms. However, if You become
+compliant, then the rights granted under this License from a particular
+Contributor are reinstated (a) provisionally, unless and until such
+Contributor explicitly and finally terminates Your grants, and (b) on an
+ongoing basis, if such Contributor fails to notify You of the
+non-compliance by some reasonable means prior to 60 days after You have
+come back into compliance. Moreover, Your grants from a particular
+Contributor are reinstated on an ongoing basis if such Contributor
+notifies You of the non-compliance by some reasonable means, this is the
+first time You have received notice of non-compliance with this License
+from such Contributor, and You become compliant prior to 30 days after
+Your receipt of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+infringement claim (excluding declaratory judgment actions,
+counter-claims, and cross-claims) alleging that a Contributor Version
+directly or indirectly infringes any patent, then the rights granted to
+You by any and all Contributors for the Covered Software under Section
+2.1 of this License shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all
+end user license agreements (excluding distributors and resellers) which
+have been validly granted by You or Your distributors under this License
+prior to termination shall survive termination.
+
+************************************************************************
+*                                                                      *
+*  6. Disclaimer of Warranty                                           *
+*  -------------------------                                           *
+*                                                                      *
+*  Covered Software is provided under this License on an "as is"       *
+*  basis, without warranty of any kind, either expressed, implied, or  *
+*  statutory, including, without limitation, warranties that the       *
+*  Covered Software is free of defects, merchantable, fit for a        *
+*  particular purpose or non-infringing. The entire risk as to the     *
+*  quality and performance of the Covered Software is with You.        *
+*  Should any Covered Software prove defective in any respect, You     *
+*  (not any Contributor) assume the cost of any necessary servicing,   *
+*  repair, or correction. This disclaimer of warranty constitutes an   *
+*  essential part of this License. No use of any Covered Software is   *
+*  authorized under this License except under this disclaimer.         *
+*                                                                      *
+************************************************************************
+
+************************************************************************
+*                                                                      *
+*  7. Limitation of Liability                                          *
+*  --------------------------                                          *
+*                                                                      *
+*  Under no circumstances and under no legal theory, whether tort      *
+*  (including negligence), contract, or otherwise, shall any           *
+*  Contributor, or anyone who distributes Covered Software as          *
+*  permitted above, be liable to You for any direct, indirect,         *
+*  special, incidental, or consequential damages of any character      *
+*  including, without limitation, damages for lost profits, loss of    *
+*  goodwill, work stoppage, computer failure or malfunction, or any    *
+*  and all other commercial damages or losses, even if such party      *
+*  shall have been informed of the possibility of such damages. This   *
+*  limitation of liability shall not apply to liability for death or   *
+*  personal injury resulting from such party's negligence to the       *
+*  extent applicable law prohibits such limitation. Some               *
+*  jurisdictions do not allow the exclusion or limitation of           *
+*  incidental or consequential damages, so this exclusion and          *
+*  limitation may not apply to You.                                    *
+*                                                                      *
+************************************************************************
+
+8. Litigation
+-------------
+
+Any litigation relating to this License may be brought only in the
+courts of a jurisdiction where the defendant maintains its principal
+place of business and such litigation shall be governed by laws of that
+jurisdiction, without reference to its conflict-of-law provisions.
+Nothing in this Section shall prevent a party's ability to bring
+cross-claims or counter-claims.
+
+9. Miscellaneous
+----------------
+
+This License represents the complete agreement concerning the subject
+matter hereof. If any provision of this License is held to be
+unenforceable, such provision shall be reformed only to the extent
+necessary to make it enforceable. Any law or regulation which provides
+that the language of a contract shall be construed against the drafter
+shall not be used to construe this License against a Contributor.
+
+10. Versions of the License
+---------------------------
+
+10.1. New Versions
+
+Mozilla Foundation is the license steward. Except as provided in Section
+10.3, no one other than the license steward has the right to modify or
+publish new versions of this License. Each version will be given a
+distinguishing version number.
+
+10.2. Effect of New Versions
+
+You may distribute the Covered Software under the terms of the version
+of the License under which You originally received the Covered Software,
+or under the terms of any subsequent version published by the license
+steward.
+
+10.3. Modified Versions
+
+If you create software not governed by this License, and you want to
+create a new license for such software, you may create and use a
+modified version of this License if you rename the license and remove
+any references to the name of the license steward (except to note that
+such modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary
+Licenses
+
+If You choose to distribute Source Code Form that is Incompatible With
+Secondary Licenses under the terms of this version of the License, the
+notice described in Exhibit B of this License must be attached.
+
+Exhibit A - Source Code Form License Notice
+-------------------------------------------
+
+  This Source Code Form is subject to the terms of the Mozilla Public
+  License, v. 2.0. If a copy of the MPL was not distributed with this
+  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular
+file, then You may include the notice in a location (such as a LICENSE
+file in a relevant directory) where a recipient would be likely to look
+for such a notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - "Incompatible With Secondary Licenses" Notice
+---------------------------------------------------------
+
+  This Source Code Form is "Incompatible With Secondary Licenses", as
+  defined by the Mozilla Public License, v. 2.0.

README.txt

@@ -0,0 +1,141 @@
+# RTPhone Platform
+
+RTPhone is a comprehensive real-time communication (RTC) platform that provides a complete software stack for building VoIP/SIP-based communication applications. Developed by VoIP Objects (Sevana), RTPhone delivers production-ready voice communication capabilities with extensive codec support and cross-platform compatibility.
+
+## Overview
+
+RTPhone serves as a static library (`librtphone.a`) that can be integrated into larger telephony and communication systems. It provides a JSON-based command interface for easy integration and control, making it suitable for building softphones, PBX systems, WebRTC gateways, and carrier-grade voice solutions.
+
+## Key Features
+
+### Audio Codec Support
+RTPhone supports an extensive range of audio codecs:
+
+**Standard Codecs:**
+- G.711 (A-law/¼-law)
+- G.722 (16kHz wideband)
+- G.729
+- GSM (Full Rate, Half Rate, Enhanced Full Rate)
+- iLBC (20ms/30ms)
+- ISAC (16kHz/32kHz)
+
+**Advanced Codecs:**
+- AMR-NB/AMR-WB (Adaptive Multi-Rate Narrowband/Wideband) - please be aware - there is no patents for AMR codecs usage included ! You should acquire them on your own.
+- EVS (Enhanced Voice Services) - 3GPP's latest codec. Again - please be aware - there is no patents for EVS codec usage included ! You should acquire them on your own.
+- Opus - Modern low-latency codec
+- Speex (with acoustic echo cancellation)
+
+**Codec Features:**
+- Bandwidth-efficient and octet-aligned modes
+- IuUP (Iu User Plane) protocol support for 3G networks
+- Dynamic codec switching
+- Packet loss concealment (PLC)
+- Comfort noise generation (CNG)
+
+### Network & Protocol Support
+
+**SIP Features:**
+- Full SIP 2.0 implementation via reSIProcate
+- Multiple transport protocols (UDP, TCP, TLS)
+- Registration, authentication, and session management
+- SIP MESSAGE, presence, and REFER support
+
+**Media Transport:**
+- RTP/RTCP for media streaming
+- SRTP for secure media
+- ICE for NAT traversal with STUN/TURN support
+- WebRTC integration components
+- IPv4 and IPv6 support
+
+### Cross-Platform Audio Support
+- DirectSound/WMME (Windows)
+- Core Audio (macOS/iOS)
+- ALSA/PulseAudio (Linux)
+- Oboe (Android) for low-latency audio
+- PortAudio fallback support
+
+### Audio Quality Features
+- 48kHz sample rate support
+- Acoustic Echo Cancellation (AEC)
+- Audio resampling and format conversion
+- Multi-channel audio mixing
+- Perceptual Voice Quality Assessment (PVQA)
+
+## Architecture
+
+The platform is organized into several core modules:
+
+- **Engine/Agent**: JSON-based command interface
+- **Engine/Endpoint**: SIP user agent implementation
+- **Engine/Media**: Audio codec management and processing
+- **Engine/Audio**: Cross-platform audio I/O handling
+- **Engine/Helper**: Utility functions (networking, logging, threading)
+
+## Supported Platforms
+
+- Linux (x64, ARM/Raspberry Pi)
+- Windows (32/64-bit)
+- macOS
+- Android (with Oboe integration)
+- iOS
+
+## Building
+
+RTPhone uses a CMake-based build system with cross-compilation support:
+
+### Linux
+```bash
+python3 build_linux.py
+```
+
+### Android
+```bash
+python3 build_android.py
+# or
+./build_android.sh
+```
+
+### Dependencies
+- CMake 3.10+
+- OpenSSL 1.1+
+- Boost libraries
+- Platform-specific audio libraries
+
+## Recent Updates
+
+Recent development has focused on:
+- AMR codec parsing and decoding improvements
+- Octet-aligned mode fixes for AMR-WB
+- RTP SSRC handling enhancements
+- Build system optimizations
+- Code modernization to C++20
+
+## Use Cases
+
+RTPhone is good for building:
+- VoIP softphones and mobile applications
+- PBX and telephony server systems
+- RTP proxies
+- Carrier-grade voice communication platforms
+- 3GPP/IMS-compliant systems
+
+## Security
+
+RTPhone includes comprehensive security features:
+- OpenSSL 1.1 integration for encryption
+- TLS transport layer security
+- SRTP media encryption
+- Certificate management support
+
+## Integration
+
+The platform provides a developer-friendly interface with:
+- Event-driven architecture
+- Comprehensive logging system
+- Modern C++20 codebase
+
+For detailed integration instructions and API documentation, please refer to the source code and header files in the `/src/engine/` directory.
+
+## License
+
+Our source code is licensed under the MPL license. Naturally, any third-party components we use are subject to their respective licenses.

build_android.py

@@ -0,0 +1,44 @@
+#!/usr/bin/python3
+from pathlib import Path
+import os
+import multiprocessing
+import shutil
+
+# Temporary build directory
+DIR_BUILD = 'build_android'
+
+# Android NDK home directory 
+NDK_HOME = os.environ['ANDROID_NDK_HOME']
+
+# CMake toolchain file
+TOOLCHAIN_FILE = f'{NDK_HOME}/build/cmake/android.toolchain.cmake'
+
+# This directory
+DIR_THIS = Path(__file__).parent.resolve()
+
+# Path to app
+DIR_SOURCE = (DIR_THIS / '../src').resolve()
+
+def make_build() -> Path:
+    if Path(DIR_BUILD).exists():
+        shutil.rmtree(DIR_BUILD)
+    os.mkdir(DIR_BUILD)
+    os.chdir(DIR_BUILD)  
+    
+    cmd = f'cmake -DCMAKE_TOOLCHAIN_FILE={TOOLCHAIN_FILE} '
+    cmd += f'-DANDROID_NDK=$NDK_HOME '
+    cmd += f'-DANDROID_PLATFORM=24 '
+    cmd += f'-DCMAKE_BUILD=Release '
+    cmd += f'-DANDROID_ABI="arm64-v8a" '
+    cmd += '../src'
+    retcode = os.system(cmd)
+    if retcode != 0:
+        raise RuntimeError('Problem when configuring the project')
+    
+    cmd = f'cmake --build . -j {multiprocessing.cpu_count()}'
+    retcode = os.system(cmd)
+    if retcode != 0:
+        raise RuntimeError('Problem when building the project')
+    
+if __name__ == '__main__':
+    make_build()

build_linux.py

@@ -0,0 +1,37 @@
+#!/usr/bin/env python3
+from pathlib import Path
+import os
+import multiprocessing
+import shutil
+
+# Temporary build directory
+DIR_BUILD = 'build_linux'
+
+# This directory
+DIR_THIS = Path(__file__).parent.resolve()
+
+# Path to app
+DIR_SOURCE = (DIR_THIS / '../src').resolve()
+
+def make_build() -> Path:
+    if Path(DIR_BUILD).exists():
+        shutil.rmtree(DIR_BUILD)
+    os.mkdir(DIR_BUILD)
+    os.chdir(DIR_BUILD)  
+    
+    cmd = f'cmake ../src -G Ninja'
+    retcode = os.system(cmd)
+    if retcode != 0:
+        raise RuntimeError('Problem when configuring the project')
+    
+    cmd = f'cmake --build . -j {multiprocessing.cpu_count()}'
+    retcode = os.system(cmd)
+    if retcode != 0:
+        raise RuntimeError('Problem when building the project')
+    
+    os.chdir('..')
+    return Path(DIR_BUILD) / 'librtphone.a'
+
+if __name__ == '__main__':
+    p = make_build()
+    print (f'Built: {p}')

src/CMakeLists.txt

@@ -1,61 +1,12 @@
+cmake_minimum_required(VERSION 3.20)
 project(rtphone)
 
-cmake_minimum_required(VERSION 3.0)
+# Rely on C++ 20
- 
+set (CMAKE_CXX_STANDARD 20)
-macro(configure_msvc_runtime)
-    if(MSVC)
-        # Default to statically-linked runtime.
-        if("${MSVC_RUNTIME}" STREQUAL "")
-            set(MSVC_RUNTIME "static")
-        endif()
-        # Set compiler options.
-        set(variables
-            CMAKE_C_FLAGS_DEBUG
-            CMAKE_C_FLAGS_MINSIZEREL
-            CMAKE_C_FLAGS_RELEASE
-            CMAKE_C_FLAGS_RELWITHDEBINFO
-            CMAKE_CXX_FLAGS_DEBUG
-            CMAKE_CXX_FLAGS_MINSIZEREL
-            CMAKE_CXX_FLAGS_RELEASE
-            CMAKE_CXX_FLAGS_RELWITHDEBINFO
-            )
-        if(${MSVC_RUNTIME} STREQUAL "static")
-            message(STATUS
-                "rtphone: MSVC -> forcing use of statically-linked runtime."
-                )
-            foreach(variable ${variables})
-                if(${variable} MATCHES "/MD")
-                    string(REGEX REPLACE "/MD" "/MT" ${variable} "${${variable}}")
-                endif()
-            endforeach()
-        else()
-            message(STATUS
-                "rtphone: MSVC -> forcing use of dynamically-linked runtime."
-                )
-            foreach(variable ${variables})
-                if(${variable} MATCHES "/MT")
-                    string(REGEX REPLACE "/MT" "/MD" ${variable} "${${variable}}")
-                endif()
-            endforeach()
-        endif()
-
-        foreach(variable ${variables})
-            string(REGEX REPLACE "/Z[iI7]" ""
-                ${variable}
-                "${${variable}}")
-
-            set(${variable} "${${variable}} /Zi /Oy-")
-        endforeach()
-    endif()
-endmacro()
-
-
-# Rely on C++ 17
-set (CMAKE_CXX_STANDARD 17)
 set (CMAKE_CXX_STANDARD_REQUIRED ON)
 
-set (rtphone_libs libs)
+set (L libs)
-set (rtphone_engine engine)
+set (E engine)
 
 option (USE_AMR_CODEC   "Use AMR codec. Requires libraries."    ON)
 option (USE_EVS_CODEC   "Use EVS codec."                        ON)
@@ -64,149 +15,347 @@ option (USE_MUSL        "Build with MUSL library"               OFF)
 
 # PIC code by default
 set (CMAKE_POSITION_INDEPENDENT_CODE ON)
+set (RUNTIME_CPU_CAPABILITY_DETECTION ON)
 
-if (NOT DEFINED LIB_PLATFORM)
+set (LIB_PLATFORM ${CMAKE_CURRENT_SOURCE_DIR}/libs/libraries)
-    set (LIB_PLATFORM ${CMAKE_CURRENT_SOURCE_DIR}/../../libraries)
-endif()
 include (${LIB_PLATFORM}/platform_libs.cmake)
 
+
 message("Libraries: ${LIB_PLATFORM}")
 set (OPENSSL_INCLUDE ${LIB_PLATFORM}/openssl/1.1/include)
 message ("Using OpenSSL include files from ${OPENSSL_INCLUDE}")
 message ("Using OpenSSL libs: ${OPENSSL_SSL} and ${OPENSSL_CRYPTO}")
-add_definitions(-DUSE_OPENSSL)
 include_directories(${OPENSSL_INCLUDE})
 
+# Used defines for our project
+set (DEFINES -DUSE_OPENSSL)
+
+# Libraries for our project
+set (LIBS_STATIC "")
+set (LIBS_DYNAMIC "")
+
+# Try to prefer static libraries anyway
+set (CMAKE_FIND_LIBRARY_SUFFIXES .a .so .dylib)
+
+# Windows-specific definitions
 if (CMAKE_SYSTEM MATCHES "Windows*")
-    add_definitions (-DTARGET_WIN -D_SILENCE_STDEXT_HASH_DEPRECATION_WARNINGS -D_UNICODE -D_CRT_SECURE_NO_WARNINGS)
+    set (DEFINES ${DEFINES} -DTARGET_WIN -D_SILENCE_STDEXT_HASH_DEPRECATION_WARNINGS -D_UNICODE -D_CRT_SECURE_NO_WARNINGS)
+    set (TARGET_WIN ON)
 endif()
 
+# Linux-specific definitions
 if (CMAKE_SYSTEM MATCHES "Linux*")
-    add_definitions (-DTARGET_LINUX -DHAVE_NETINET_IN_H)
+    set (DEFINES ${DEFINES} -DTARGET_LINUX -DHAVE_NETINET_IN_H)
+    set (TARGET_LINUX ON)
+    set (LIBS_STATIC ${LIBS_STATIC} dl)
 endif()
 
-
+# macOS-specific definitions
 if (CMAKE_SYSTEM MATCHES "Darwin*")
-    add_definitions (-DTARGET_OSX)
+    set (DEFINES ${DEFINES} -DTARGET_OSX)
+    set (TARGET_OSX ON)
+    set (LIBS_STATIC ${LIBS_STATIC} dl)
 endif()
 
+# 
 if (CMAKE_SYSTEM MATCHES "Android")
     message("Adding the Oboe library")
     set (OBOE_DIR libs/oboe)
     add_subdirectory (${OBOE_DIR} ./oboe)
     include_directories (${OBOE_DIR}/include)
-    add_definitions(-DTARGET_ANDROID -DHAVE_NETINET_IN_H)
+    set (DEFINES ${DEFINES} -DTARGET_ANDROID -DHAVE_NETINET_IN_H)
+    set (TARGET_ANDROID ON)
+    set (LIBS_STATIC ${LIBS} oboe)
 endif()
 
 if (USE_MUSL)
-    add_definitions(-DTARGET_MUSL)
+    set (DEFINES ${DEFINES} -DTARGET_MUSL)
+    set (TARGET_MUSL ON)
 endif()
 
 set (RTPHONE_SOURCES
-    ${rtphone_engine}/media/MT_Statistics.cpp
+    ${E}/engine_config.h
-    ${rtphone_engine}/media/MT_WebRtc.cpp
+    ${E}/media/MT_Statistics.cpp
-    ${rtphone_engine}/media/MT_Stream.cpp
+    ${E}/media/MT_WebRtc.cpp
-    ${rtphone_engine}/media/MT_SrtpHelper.cpp
+    ${E}/media/MT_Stream.cpp
-    ${rtphone_engine}/media/MT_SingleAudioStream.cpp
+    ${E}/media/MT_SrtpHelper.cpp
-    ${rtphone_engine}/media/MT_NativeRtpSender.cpp
+    ${E}/media/MT_SingleAudioStream.cpp
-    ${rtphone_engine}/media/MT_Dtmf.cpp
+    ${E}/media/MT_NativeRtpSender.cpp
-    ${rtphone_engine}/media/MT_CodecList.cpp
+    ${E}/media/MT_Dtmf.cpp
-    ${rtphone_engine}/media/MT_Codec.cpp
+    ${E}/media/MT_CodecList.cpp
-    ${rtphone_engine}/media/MT_Box.cpp
+    ${E}/media/MT_Codec.cpp
-    ${rtphone_engine}/media/MT_AudioStream.cpp
+    ${E}/media/MT_Box.cpp
-    ${rtphone_engine}/media/MT_AudioReceiver.cpp
+    ${E}/media/MT_AudioStream.cpp
-    ${rtphone_engine}/media/MT_AudioCodec.cpp
+    ${E}/media/MT_AudioReceiver.cpp
-    ${rtphone_engine}/media/MT_CngHelper.cpp
+    ${E}/media/MT_AudioCodec.cpp
-    ${rtphone_engine}/agent/Agent_Impl.cpp
+    ${E}/media/MT_CngHelper.cpp
-    ${rtphone_engine}/agent/Agent_Impl.h
+    ${E}/agent/Agent_Impl.cpp
-    ${rtphone_engine}/agent/Agent_AudioManager.cpp
+    ${E}/agent/Agent_Impl.h
-    ${rtphone_engine}/agent/Agent_AudioManager.h
+    ${E}/agent/Agent_AudioManager.cpp
-    ${rtphone_engine}/endpoint/EP_Account.cpp
+    ${E}/agent/Agent_AudioManager.h
-    ${rtphone_engine}/endpoint/EP_Account.h
+    ${E}/endpoint/EP_Account.cpp
-    ${rtphone_engine}/endpoint/EP_AudioProvider.cpp
+    ${E}/endpoint/EP_Account.h
-    ${rtphone_engine}/endpoint/EP_AudioProvider.h
+    ${E}/endpoint/EP_AudioProvider.cpp
-    ${rtphone_engine}/endpoint/EP_DataProvider.cpp
+    ${E}/endpoint/EP_AudioProvider.h
-    ${rtphone_engine}/endpoint/EP_DataProvider.h
+    ${E}/endpoint/EP_DataProvider.cpp
-    ${rtphone_engine}/endpoint/EP_Engine.cpp
+    ${E}/endpoint/EP_DataProvider.h
-    ${rtphone_engine}/endpoint/EP_Engine.h
+    ${E}/endpoint/EP_Engine.cpp
-    ${rtphone_engine}/endpoint/EP_NetworkQueue.cpp
+    ${E}/endpoint/EP_Engine.h
-    ${rtphone_engine}/endpoint/EP_NetworkQueue.h
+    ${E}/endpoint/EP_NetworkQueue.cpp
-    ${rtphone_engine}/endpoint/EP_Observer.cpp
+    ${E}/endpoint/EP_NetworkQueue.h
-    ${rtphone_engine}/endpoint/EP_Observer.h
+    ${E}/endpoint/EP_Observer.cpp
-    ${rtphone_engine}/endpoint/EP_Session.cpp
+    ${E}/endpoint/EP_Observer.h
-    ${rtphone_engine}/endpoint/EP_Session.h
+    ${E}/endpoint/EP_Session.cpp
+    ${E}/endpoint/EP_Session.h
 
-    ${rtphone_engine}/media/MT_Statistics.h
+    ${E}/media/MT_Statistics.h
-    ${rtphone_engine}/media/MT_WebRtc.h
+    ${E}/media/MT_WebRtc.h
-    ${rtphone_engine}/media/MT_Stream.h
+    ${E}/media/MT_Stream.h
-    ${rtphone_engine}/media/MT_SrtpHelper.h
+    ${E}/media/MT_SrtpHelper.h
-    ${rtphone_engine}/media/MT_SingleAudioStream.h
+    ${E}/media/MT_SingleAudioStream.h
-    ${rtphone_engine}/media/MT_NativeRtpSender.h
+    ${E}/media/MT_NativeRtpSender.h
-    ${rtphone_engine}/media/MT_Dtmf.h
+    ${E}/media/MT_Dtmf.h
-    ${rtphone_engine}/media/MT_CodecList.h
+    ${E}/media/MT_CodecList.h
-    ${rtphone_engine}/media/MT_Codec.h
+    ${E}/media/MT_Codec.h
-    ${rtphone_engine}/media/MT_Box.h
+    ${E}/media/MT_Box.h
-    ${rtphone_engine}/media/MT_AudioStream.h
+    ${E}/media/MT_AudioStream.h
-    ${rtphone_engine}/media/MT_AudioReceiver.h
+    ${E}/media/MT_AudioReceiver.h
-    ${rtphone_engine}/media/MT_AudioCodec.h
+    ${E}/media/MT_AudioCodec.h
-    ${rtphone_engine}/media/MT_CngHelper.h
+    ${E}/media/MT_CngHelper.h
+    
+    ${E}/media/MT_Statistics.cpp
+    ${E}/media/MT_WebRtc.cpp
+    ${E}/media/MT_Stream.cpp
+    ${E}/media/MT_SrtpHelper.cpp
+    ${E}/media/MT_SingleAudioStream.cpp
+    ${E}/media/MT_NativeRtpSender.cpp
+    ${E}/media/MT_Dtmf.cpp
+    ${E}/media/MT_CodecList.cpp
+    ${E}/media/MT_Codec.cpp
+    ${E}/media/MT_Box.cpp
+    ${E}/media/MT_AudioStream.cpp
+    ${E}/media/MT_AudioReceiver.cpp
+    ${E}/media/MT_AudioCodec.cpp
+    ${E}/media/MT_CngHelper.cpp
+    ${E}/media/MT_AmrCodec.cpp
+    ${E}/media/MT_EvsCodec.cpp
+    ${E}/media/MT_Statistics.h
+    ${E}/media/MT_WebRtc.h
+    ${E}/media/MT_Stream.h
+    ${E}/media/MT_SrtpHelper.h
+    ${E}/media/MT_SingleAudioStream.h
+    ${E}/media/MT_NativeRtpSender.h
+    ${E}/media/MT_Dtmf.h
+    ${E}/media/MT_CodecList.h
+    ${E}/media/MT_Codec.h
+    ${E}/media/MT_Box.h
+    ${E}/media/MT_AudioStream.h
+    ${E}/media/MT_AudioReceiver.h
+    ${E}/media/MT_AudioCodec.h
+    ${E}/media/MT_CngHelper.h
+    ${E}/media/MT_AmrCodec.h
+    ${E}/media/MT_EvsCodec.h
+
+    ${E}/helper/HL_AsyncCommand.cpp
+    ${E}/helper/HL_AsyncCommand.h
+    ${E}/helper/HL_Base64.h
+    ${E}/helper/HL_ByteBuffer.h
+    ${E}/helper/HL_Calculator.cpp
+    ${E}/helper/HL_Calculator.h
+    ${E}/helper/HL_CrashRpt.cpp
+    ${E}/helper/HL_CrashRpt.h
+    ${E}/helper/HL_CsvReader.cpp
+    ${E}/helper/HL_CsvReader.h
+    ${E}/helper/HL_Epoll.cpp
+    ${E}/helper/HL_Epoll.h
+    ${E}/helper/HL_Exception.h
+    ${E}/helper/HL_File.cpp
+    ${E}/helper/HL_File.h
+    ${E}/helper/HL_HepSupport.cpp
+    ${E}/helper/HL_HepSupport.h
+    ${E}/helper/HL_InternetAddress.h
+    ${E}/helper/HL_IuUP.cpp
+    ${E}/helper/HL_IuUP.h
+    ${E}/helper/HL_Log.cpp
+    ${E}/helper/HL_Log.h
+    ${E}/helper/HL_NetworkFrame.cpp
+    ${E}/helper/HL_NetworkFrame.h
+    ${E}/helper/HL_NetworkSocket.cpp
+    ${E}/helper/HL_NetworkSocket.h
+    ${E}/helper/HL_Optional.hpp
+    ${E}/helper/HL_OsVersion.cpp
+    ${E}/helper/HL_OsVersion.h
+    ${E}/helper/HL_Pointer.cpp
+    ${E}/helper/HL_Pointer.h
+    ${E}/helper/HL_Process.cpp
+    ${E}/helper/HL_Process.h
+    ${E}/helper/HL_Rtp.cpp
+    ${E}/helper/HL_Rtp.h
+    ${E}/helper/HL_Singletone.cpp
+    ${E}/helper/HL_Singletone.h
+    ${E}/helper/HL_SocketHeap.cpp
+    ${E}/helper/HL_SocketHeap.h
+    ${E}/helper/HL_Statistics.cpp
+    ${E}/helper/HL_Statistics.h
+    ${E}/helper/HL_StreamState.h
+    ${E}/helper/HL_String.cpp
+    ${E}/helper/HL_String.h
+    ${E}/helper/HL_Sync.cpp
+    ${E}/helper/HL_Sync.h
+    ${E}/helper/HL_ThreadPool.cpp
+    ${E}/helper/HL_ThreadPool.h
+    ${E}/helper/HL_Time.cpp
+    ${E}/helper/HL_Time.h
+    ${E}/helper/HL_Types.h
+    ${E}/helper/HL_Types.cpp
+    ${E}/helper/HL_Usb.cpp
+    ${E}/helper/HL_Usb.h
+    ${E}/helper/HL_Uuid.cpp
+    ${E}/helper/HL_Uuid.h
+    ${E}/helper/HL_VariantMap.cpp
+    ${E}/helper/HL_VariantMap.h
+    ${E}/helper/HL_Xcap.cpp
+    ${E}/helper/HL_Xcap.h
+
+    ${E}/audio/Audio_Resampler.cpp
+    ${E}/audio/Audio_Resampler.h
+    ${E}/audio/Audio_Quality.cpp
+    ${E}/audio/Audio_Quality.h
+    ${E}/audio/Audio_Mixer.cpp
+    ${E}/audio/Audio_Mixer.h
+    ${E}/audio/Audio_Interface.cpp
+    ${E}/audio/Audio_Interface.h
+    ${E}/audio/Audio_Helper.cpp
+    ${E}/audio/Audio_Helper.h
+    ${E}/audio/Audio_DataWindow.cpp
+    ${E}/audio/Audio_DataWindow.h
+    ${E}/audio/Audio_DevicePair.cpp
+    ${E}/audio/Audio_DevicePair.h
+    ${E}/audio/Audio_Player.cpp
+    ${E}/audio/Audio_Player.h
+    ${E}/audio/Audio_Null.cpp
+    ${E}/audio/Audio_Null.h
+    ${E}/audio/Audio_CoreAudio.cpp
+    ${E}/audio/Audio_CoreAudio.h
+    ${E}/audio/Audio_DirectSound.cpp
+    ${E}/audio/Audio_DirectSound.h
+    ${E}/audio/Audio_AndroidOboe.cpp
+    ${E}/audio/Audio_AndroidOboe.h
+    ${E}/audio/Audio_WavFile.cpp
+    ${E}/audio/Audio_WavFile.h
+
+    ${L}/ice/hmac_sha1_impl.cpp
+    ${L}/ice/hmac_sha1_impl.h
+    ${L}/ice/ICEAction.h
+    ${L}/ice/ICEAddress.cpp
+    ${L}/ice/ICEAddress.h
+    ${L}/ice/ICEAuthTransaction.cpp
+    ${L}/ice/ICEAuthTransaction.h
+    ${L}/ice/ICEBinding.cpp
+    ${L}/ice/ICEBinding.h
+    ${L}/ice/ICEBox.cpp
+    ${L}/ice/ICEBox.h
+    ${L}/ice/ICEBoxImpl.cpp
+    ${L}/ice/ICEBoxImpl.h
+    ${L}/ice/ICEByteBuffer.cpp
+    ${L}/ice/ICEByteBuffer.h
+    ${L}/ice/ICECandidate.cpp
+    ${L}/ice/ICECandidate.h
+    ${L}/ice/ICECandidatePair.cpp
+    ${L}/ice/ICECandidatePair.h
+    ${L}/ice/ICECheckList.cpp
+    ${L}/ice/ICECheckList.h
+    ${L}/ice/ICECRC32.cpp
+    ${L}/ice/ICECRC32.h
+    ${L}/ice/ICEError.cpp
+    ${L}/ice/ICEError.h
+    ${L}/ice/ICEEvent.h
+    ${L}/ice/ICELog.cpp
+    ${L}/ice/ICELog.h
+    ${L}/ice/ICEMD5.cpp
+    ${L}/ice/ICEMD5.h
+    ${L}/ice/ICENetworkHelper.cpp
+    ${L}/ice/ICENetworkHelper.h
+    ${L}/ice/ICEPacketTimer.cpp
+    ${L}/ice/ICEPacketTimer.h
+    ${L}/ice/ICEPlatform.cpp
+    ${L}/ice/ICEPlatform.h
+    ${L}/ice/ICERelaying.cpp
+    ${L}/ice/ICERelaying.h
+    ${L}/ice/ICESession.cpp
+    ${L}/ice/ICESession.h
+    ${L}/ice/ICESHA1.cpp
+    ${L}/ice/ICESHA1.h
+    ${L}/ice/ICESocket.h
+    ${L}/ice/ICEStream.cpp
+    ${L}/ice/ICEStream.h
+    ${L}/ice/ICEStunAttributes.cpp
+    ${L}/ice/ICEStunAttributes.h
+    ${L}/ice/ICEStunConfig.cpp
+    ${L}/ice/ICEStunConfig.h
+    ${L}/ice/ICEStunMessage.cpp
+    ${L}/ice/ICEStunMessage.h
+    ${L}/ice/ICEStunTransaction.cpp
+    ${L}/ice/ICEStunTransaction.h
+    ${L}/ice/ICESync.cpp
+    ${L}/ice/ICESync.h
+    ${L}/ice/ICETime.cpp
+    ${L}/ice/ICETime.h
+    ${L}/ice/ICETransactionList.cpp
+    ${L}/ice/ICETransactionList.h
+    ${L}/ice/ICETypes.h
+    ${L}/ice/md5_impl.cpp
+    ${L}/ice/md5_impl.h
     )
 
-if (USE_AMR_CODEC)
-    add_definitions(-DUSE_AMR_CODEC)
-    set (RTPHONE_SOURCES ${RTPHONE_SOURCES} ${rtphone_engine}/media/MT_AmrCodec.cpp ${rtphone_engine}/media/MT_AmrCodec.h)
-endif()
-
-if (USE_EVS_CODEC)
-    add_definitions(-DUSE_EVS_CODEC)
-    set (RTPHONE_SOURCES ${RTPHONE_SOURCES} ${rtphone_engine}/media/MT_EvsCodec.cpp ${rtphone_engine}/media/MT_EvsCodec.h)
-endif()
-
 if (USE_OPUS_CODEC)
-    add_definitions(-DUSE_OPUS_CODEC)
+    set (DEFINES ${DEFINES} -DUSE_OPUS_CODEC)
 endif()
 
 add_library (rtphone STATIC ${RTPHONE_SOURCES})
 
-add_subdirectory(${rtphone_libs}/resiprocate)
+add_subdirectory(${L}/resiprocate)
-add_subdirectory(${rtphone_libs}/ice)
+add_subdirectory(${L}/jrtplib/src)
-add_subdirectory(${rtphone_libs}/jrtplib/src)
+add_subdirectory(${L}/libg729)
-add_subdirectory(${rtphone_libs}/libg729)
 
 if (USE_EVS_CODEC)
-    add_subdirectory(${rtphone_libs}/libevs)
+    add_subdirectory(${L}/libevs)
 endif()
 
-add_subdirectory(${rtphone_libs}/libgsm)
+add_subdirectory(${L}/libgsm)
-add_subdirectory(${rtphone_libs}/gsmhr)
+add_subdirectory(${L}/gsmhr)
-add_subdirectory(${rtphone_libs}/g722)
+add_subdirectory(${L}/g722)
-add_subdirectory(${rtphone_libs}/speexdsp)
+add_subdirectory(${L}/speexdsp)
-add_subdirectory(${rtphone_libs}/srtp)
+add_subdirectory(${L}/libsrtp)
-add_subdirectory(${rtphone_libs}/webrtc)
+add_subdirectory(${L}/webrtc)
-add_subdirectory(${rtphone_engine}/helper)
+add_subdirectory(${L}/opus)
-add_subdirectory(${rtphone_engine}/audio)
-add_subdirectory(${rtphone_engine}/media)
 
-set (LIBS ice_stack jrtplib g729_codec gsm_codec
+set (LIBS_STATIC ${LIBS_STATIC} jrtplib g729_codec gsm_codec opus
-    gsmhr_codec g722_codec srtp resiprocate helper_lib audio_lib webrtc speexdsp)
+                                gsmhr_codec g722_codec srtp3 resiprocate webrtc speexdsp)
 
-if (CMAKE_SYSTEM MATCHES "Win*")
+if (USE_AMR_CODEC)
-    set (LIBS ${LIBS} )
+    include (${LIB_PLATFORM}/platform_libs.cmake)
-else ()
+    message("Media: AMR NB and WB codecs will be included.")
-    set (LIBS ${LIBS} dl)
+    set (DEFINES ${DEFINES} -DUSE_AMR_CODEC)
+    set (LIBS_STATIC ${LIBS_STATIC} ${OPENCORE_AMRNB} ${OPENCORE_AMRWB})
 endif()
 
-if (CMAKE_SYSTEM MATCHES "Android")
+if (USE_EVS_CODEC)
-    set (LIBS ${LIBS} oboe)
+    message("Media: EVS codec will be included.")
+    set (DEFINES ${DEFINES} -DUSE_EVS_CODEC)
+    set (LIBS_STATIC ${LIBS_STATIC} evs_codec)
 endif()
 
+target_compile_definitions(rtphone PUBLIC ${DEFINES})
 
-target_link_libraries(rtphone
+if (TARGET_LINUX)
-    ${LIBS}
+    target_link_options(rtphone PUBLIC -Wl,-Bstatic)
-    ${OPENSSL_SSL}
+endif()
-    ${OPENSSL_CRYPTO}
+target_link_libraries(rtphone PUBLIC ${LIBS_STATIC} ${OPENSSL_SSL} ${OPENSSL_CRYPTO})
-     )
 
+if (TARGET_LINUX)
+    target_link_options(rtphone PUBLIC -Wl,-Bdynamic)
+endif()
 
 target_include_directories(rtphone
     PUBLIC
@@ -214,15 +363,18 @@ target_include_directories(rtphone
         $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/engine>
         ${CMAKE_CURRENT_SOURCE_DIR}/libs
         ${LIB_PLATFORM}/opus/include
+        ${E}/helper
+        ${E}/audio
+        ${E}/media
+        ${L}
+        ${L}/ice
     PRIVATE
-        ${CMAKE_CURRENT_SOURCE_DIR}/libs/
+        ${L}/libevs/lib_com
-        ${CMAKE_CURRENT_SOURCE_DIR}/libs/libevs/lib_com
+        ${L}/libevs/lib_enc
-        ${CMAKE_CURRENT_SOURCE_DIR}/libs/libevs/lib_enc
+        ${L}/libevs/lib_dec
-        ${CMAKE_CURRENT_SOURCE_DIR}/libs/libevs/lib_dec
+        ${L}/speex/include
-        ${CMAKE_CURRENT_SOURCE_DIR}/libs/speex/include
+        ${L}/libs/json
-        ${CMAKE_CURRENT_SOURCE_DIR}/libs/opus/include/
-        ${CMAKE_CURRENT_SOURCE_DIR}/libs/json
     )
 
 # For MSVC static builds
-configure_msvc_runtime()
+# set_property(TARGET rtphone PROPERTY MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")

src/engine/agent/Agent_AudioManager.cpp

@@ -6,6 +6,7 @@
 #include "Agent_AudioManager.h"
 #include "../engine/audio/Audio_WavFile.h"
 #include "../engine/audio/Audio_Null.h"
+#include "HL_String.h"
 
 #if defined(TARGET_ANDROID)
 # include "../engine/audio/Audio_Android.h"
@@ -171,7 +172,7 @@ void AudioManager::startPlayFile(int usageId, const std::string& path, AudioTarg
     // Check if file exists
     Audio::PWavFileReader r = std::make_shared<Audio::WavFileReader>();
 #ifdef TARGET_WIN
-  r->open(StringHelper::makeTstring(path));
+    r->open(strx::makeTstring(path));
 #else
     r->open(path);
 #endif

src/engine/agent/Agent_Impl.cpp

@@ -481,41 +481,6 @@ void AgentImpl::processWaitForEvent(JsonCpp::Value &request, JsonCpp::Value &ans
     answer["status"] = Status_Ok;
 }
 
-#if defined(USE_PVQA_LIBRARY)
-/*static JsonCpp::Value CsvReportToJson(const std::string& report)
-{
-    JsonCpp::Value detectorValues;
-    std::istringstream iss(report);
-    CsvReader reader(iss);
-    std::vector<std::string> cells;
-    if (reader.readLine(cells))
-    {
-        JsonCpp::Value detectorNames;
-        for (size_t nameIndex = 0; nameIndex < cells.size(); nameIndex++)
-            detectorNames[static_cast<int>(nameIndex)] = strx::trim(cells[nameIndex]);
-        // Put first line name of columns
-        detectorValues[0] = detectorNames;
-
-        int rowIndex = 1;
-        while (reader.readLine(cells))
-        {
-            // Skip last column for now
-            JsonCpp::Value row;
-            for (size_t valueIndex = 0; valueIndex < cells.size(); valueIndex++)
-            {
-                bool isFloat = true;
-                float v = strx::toFloat(cells[valueIndex], 0.0, &isFloat);
-                if (isFloat)
-                    row[static_cast<int>(valueIndex)] = static_cast<double>(v);
-                else
-                    row[static_cast<int>(valueIndex)] = cells[valueIndex];
-            }
-            detectorValues[rowIndex++] = row;
-        }
-    }
-    return detectorValues;
-}*/
-#endif
 
 void AgentImpl::processGetMediaStats(JsonCpp::Value& request, JsonCpp::Value& answer)
 {

src/engine/audio/Audio_DirectSound.h

@@ -1,4 +1,4 @@
-/* Copyright(C) 2007-2017 VoIP objects (voipobjects.com)
+/* Copyright(C) 2007-2025 VoIP objects (voipobjects.com)
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
@@ -6,7 +6,7 @@
 #ifndef __AUDIO_DSOUND_H
 #define __AUDIO_DSOUND_H
 
-#include "../config.h"
+#include "../engine_config.h"
 
 #include <winsock2.h>
 #include <windows.h>

src/engine/audio/Audio_Helper.cpp

@@ -29,10 +29,6 @@ TimeSource::TimeSource(int quantTime, int nrOfQuants)
   mTailTime = 0;
 }
 
-TimeSource::~TimeSource()
-{
-}
-
 void TimeSource::start()
 {
 #ifdef TARGET_WIN
@@ -107,7 +103,7 @@ unsigned TimeSource::time()
 
 // --- StubTimer ---
 StubTimer::StubTimer(int bufferTime, int bufferCount)
-:mBufferTime(bufferTime), mBufferCount(bufferCount), mTimeSource(bufferTime, bufferCount), mActive(false)
+:mBufferTime(bufferTime), mBufferCount(bufferCount), mTimeSource(bufferTime, bufferCount), mActive(false), mCurrentTime(0)
 {
 #ifdef TARGET_WIN
     mStubSignal = ::CreateEvent(NULL, FALSE, FALSE, NULL);

src/engine/audio/Audio_Helper.h

@@ -47,7 +47,7 @@ namespace Audio
 
   public:
     TimeSource(int quantTime, int nrOfQuants);
-    ~TimeSource();
+    ~TimeSource() = default;
 
     void start();
     void stop();

src/engine/audio/Audio_Interface.h

@@ -7,7 +7,7 @@
 #define __AUDIO_INTERFACE_H
 
 #include <string>
-#include "../config.h"
+#include "../engine_config.h"
 #include "../helper/HL_Types.h"
 #include "../helper/HL_VariantMap.h"
 #include "../helper/HL_Pointer.h"

src/engine/audio/Audio_Mixer.cpp

@@ -3,7 +3,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#include "../config.h"
+#include "../engine_config.h"
 #include "../helper/HL_Exception.h"
 #include "../helper/HL_Log.h"
 

src/engine/audio/Audio_Mixer.h

@@ -6,7 +6,7 @@
 #ifndef _RX_MIXER_H
 #define _RX_MIXER_H
 
-#include "../config.h"
+#include "../engine_config.h"
 #include "../helper/HL_ByteBuffer.h"
 #include "../helper/HL_Sync.h"
 #include "Audio_Resampler.h"

src/engine/audio/Audio_Null.cpp

@@ -1,6 +1,7 @@
 #include "Audio_Null.h"
 #include "helper/HL_Log.h"
 #include <assert.h>
+#include <chrono>
 #define LOG_SUBSYSTEM "NULL audio"
 
 using namespace Audio;
@@ -59,7 +60,7 @@ NullInputDevice::NullInputDevice()
 
 NullInputDevice::~NullInputDevice()
 {
-  close();
+  internalClose();
 }
 
 bool NullInputDevice::open()
@@ -72,7 +73,7 @@ bool NullInputDevice::open()
   return true;
 }
 
-void NullInputDevice::close()
+void NullInputDevice::internalClose()
 {
   mTimer.reset();
   if (mBuffer)
@@ -83,6 +84,10 @@ void NullInputDevice::close()
   ICELogInfo(<<"Pseudocaptured " << mTimeCounter << " milliseconds , " << mDataCounter << " bytes.");
 }
 
+void NullInputDevice::close()
+{
+    internalClose();
+}
 Format NullInputDevice::getFormat()
 {
   assert (Format().sizeFromTime(AUDIO_MIC_BUFFER_LENGTH) == AUDIO_MIC_BUFFER_SIZE);
@@ -105,7 +110,7 @@ NullOutputDevice::NullOutputDevice()
 
 NullOutputDevice::~NullOutputDevice()
 {
-  close();
+  internalClose();
 }
 
 
@@ -118,13 +123,18 @@ bool NullOutputDevice::open()
   return true;
 }
 
-void NullOutputDevice::close()
+void NullOutputDevice::internalClose()
 {
   mTimer.reset();
   free(mBuffer); mBuffer = nullptr;
   ICELogInfo(<< "Pseudoplayed " << mTimeCounter << " milliseconds, " << mDataCounter << " bytes.");
 }
 
+void NullOutputDevice::close()
+{
+    internalClose();
+}
+
 Format NullOutputDevice::getFormat()
 {
   assert (Format().sizeFromTime(AUDIO_SPK_BUFFER_LENGTH) == AUDIO_SPK_BUFFER_SIZE);

src/engine/audio/Audio_Null.h

@@ -38,6 +38,8 @@ namespace Audio
     void* mBuffer = nullptr;
     std::shared_ptr<NullTimer> mTimer;
     int64_t mTimeCounter = 0, mDataCounter = 0;
+    void internalClose();
+
   public:
     NullInputDevice();
     virtual ~NullInputDevice();
@@ -55,6 +57,8 @@ namespace Audio
     std::shared_ptr<NullTimer> mTimer;
     void* mBuffer = nullptr;
     int64_t mDataCounter = 0, mTimeCounter = 0;
+
+    void internalClose();
   public:
     NullOutputDevice();
     virtual ~NullOutputDevice();

src/engine/audio/Audio_Quality.cpp

@@ -3,7 +3,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#include "../config.h"
+#include "../engine_config.h"
 #include "Audio_Quality.h"
 #include "../helper/HL_Exception.h"
 #include "../helper/HL_Types.h"

src/engine/audio/Audio_Quality.h

@@ -5,7 +5,7 @@
 
 #ifndef __AUDIO_QUALITY_H
 #define __AUDIO_QUALITY_H
-#include "../config.h"
+#include "../engine_config.h"
 #include "../helper/HL_Sync.h"
 #include <vector>
 

src/engine/audio/Audio_Resampler.cpp

@@ -3,7 +3,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#include "../config.h"
+#include "../engine_config.h"
 #include "Audio_Resampler.h"
 #include <stdlib.h>
 #include <assert.h>
@@ -18,7 +18,7 @@ namespace Audio
 
 
 SpeexResampler::SpeexResampler()
-    :mContext(NULL), mErrorCode(0), mSourceRate(0), mDestRate(0), mLastSample(0)
+    :mContext(NULL), mErrorCode(0), mSourceRate(0), mDestRate(0), mLastSample(0), mChannels(0)
 {
 }
 
@@ -125,12 +125,13 @@ int SpeexResampler::destRate()
 
 size_t SpeexResampler::getDestLength(size_t sourceLen)
 {
-    return size_t(sourceLen * (float(mDestRate) / mSourceRate) + 0.5f) / 2 * 2;
+    return size_t(sourceLen * (float(mDestRate) / mSourceRate) + 0.5f);
 }
 
 size_t SpeexResampler::getSourceLength(size_t destLen)
 {
-    return size_t(destLen * (float(mSourceRate) / mDestRate) + 0.5f) / 2 * 2;
+    // Here we want to get 'destLen' number of samples
+    return size_t(destLen * (float(mSourceRate) / mDestRate) + 0.5f);
 }
 
 // Returns instance + speex resampler size in bytes
@@ -273,7 +274,7 @@ PResampler UniversalResampler::findResampler(int sourceRate, int destRate)
     PResampler r;
     if (resamplerIter == mResamplerMap.end())
     {
-        r = PResampler(new Resampler());
+        r = std::make_shared<Resampler>();
         r->start(AUDIO_CHANNELS, sourceRate, destRate);
         mResamplerMap[RatePair(sourceRate, destRate)] = r;
     }

src/engine/audio/Audio_WavFile.cpp

@@ -7,7 +7,7 @@
 #include "helper/HL_Exception.h"
 #include "helper/HL_String.h"
 #include "helper/HL_Log.h"
-#include "../config.h"
+#include "../engine_config.h"
 
 #include <memory.h>
 #include <assert.h>
@@ -40,7 +40,7 @@ using namespace Audio;
 
 // ---------------------- WavFileReader -------------------------
 WavFileReader::WavFileReader()
-    :mHandle(nullptr), mSamplerate(0), mLastError(0)
+    :mSamplerate(0), mLastError(0), mChannels(0), mBits(0), mDataLength(0)
 {
     mDataOffset = 0;
 }
@@ -53,38 +53,51 @@ WavFileReader::~WavFileReader()
 
 std::string WavFileReader::readChunk()
 {
-    char name[5];
+    char name[5] = {0};
-    if (fread(name, 1, 4, mHandle) != 4)
+    readBuffer(name, 4);
-        THROW_READERROR;
 
-    name[4] = 0;
     std::string result = name;
-    unsigned size;
+    uint32_t size = 0;
-    if (fread(&size, 4, 1, mHandle) != 1)
+    readBuffer(&size, 4);
-        THROW_READERROR;
 
     if (result == "fact")
-        fread(&mDataLength, 4, 1, mHandle);
+    {
+        uint32_t dataLength = 0;
+        readBuffer(&dataLength, sizeof dataLength);
+        mDataLength = dataLength;
+    }
     else
     if (result != "data")
-        fseek(mHandle, size, SEEK_CUR);
+        mInput->seekg(size, std::ios_base::beg);
     else
         mDataLength = size;
 
     return result;
 }
 
-bool WavFileReader::open(const std::tstring& filename)
+void  WavFileReader::readBuffer(void* buffer, size_t sz)
+{
+    auto p = mInput->tellg();
+    mInput->read(reinterpret_cast<char*>(buffer), sz);
+    if (mInput->tellg() - p != sz)
+        throw Exception(ERR_WAVFILE_FAILED);
+}
+
+size_t WavFileReader::tryReadBuffer(void* buffer, size_t sz)
+{
+    auto p = mInput->tellg();
+    mInput->read(reinterpret_cast<char*>(buffer), sz);
+    return mInput->tellg() - p;
+}
+
+bool WavFileReader::open(const std::filesystem::path& p)
 {
     LOCK;
     try
     {
-#ifdef WIN32
+        mPath = p;
-        mHandle = _wfopen(filename.c_str(), L"rb");
+        mInput = std::make_unique<std::ifstream>(p, std::ios::binary | std::ios::in);
-#else
+        if (!mInput->is_open())
-        mHandle = fopen(strx::makeUtf8(filename).c_str(), "rb");
-#endif
-        if (NULL == mHandle)
         {
 #if defined(TARGET_ANDROID) || defined(TARGET_LINUX) || defined(TARGET_OSX)
             mLastError = errno;
@@ -98,75 +111,62 @@ bool WavFileReader::open(const std::tstring& filename)
 
         // Read the .WAV header
         char riff[4];
-        if (fread(riff, 4, 1, mHandle) < 1)
+        readBuffer(riff, sizeof riff);
-            THROW_READERROR;
 
         if (!(riff[0] == 'R' && riff[1] == 'I' && riff[2] == 'F' && riff[3] == 'F'))
             THROW_READERROR;
 
         // Read the file size
         uint32_t filesize = 0;
-        if (fread(&filesize, 4, 1, mHandle) < 1)
+        readBuffer(&filesize, sizeof(filesize));
-            THROW_READERROR;
 
-        char wavefmt[9];
+        char wavefmt[9] = {0};
-        if (fread(wavefmt, 8, 1, mHandle) < 1)
+        readBuffer(wavefmt, 8);
-            THROW_READERROR;
-
-        wavefmt[8] = 0;
         if (strcmp(wavefmt, "WAVEfmt ") != 0)
             THROW_READERROR;
 
         uint32_t fmtSize = 0;
-        if (fread(&fmtSize, 4, 1, mHandle) < 1)
+        readBuffer(&fmtSize, sizeof(fmtSize));
-            THROW_READERROR;
 
-        uint32_t fmtStart = ftell(mHandle);
+        auto fmtStart = mInput->tellg();
 
         uint16_t formattag  = 0;
-        if (fread(&formattag, 2, 1, mHandle) < 1)
+        readBuffer(&formattag, sizeof(formattag));
-            THROW_READERROR;
 
         if (formattag != 1/*WAVE_FORMAT_PCM*/)
             THROW_READERROR;
 
-        if (fread(&mChannels, 2, 1, mHandle) < 1)
+        mChannels = 0;
-            THROW_READERROR;
+        readBuffer(&mChannels, sizeof(mChannels));
 
         mSamplerate = 0;
-        if (fread(&mSamplerate, 4, 1, mHandle) < 1)
+        readBuffer(&mSamplerate, sizeof(mSamplerate));
-            THROW_READERROR;
 
-        unsigned int avgbytespersec = 0;
+        uint32_t avgbytespersec = 0;
-        if (fread(&avgbytespersec, 4, 1, mHandle) < 1)
+        readBuffer(&avgbytespersec, sizeof(avgbytespersec));
-            THROW_READERROR;
 
-        unsigned short blockalign = 0;
+        uint16_t blockalign = 0;
-        if (fread(&blockalign, 2, 1, mHandle) < 1)
+        readBuffer(&blockalign, sizeof(blockalign));
-            THROW_READERROR;
 
         mBits = 0;
-        if (fread(&mBits, 2, 1, mHandle) < 1)
+        readBuffer(&mBits, sizeof(mBits));
-            THROW_READERROR;
 
         if (mBits !=8 && mBits != 16)
             THROW_READERROR;
 
-        // Read the "chunk"
+        // Look for the chunk 'data'
-        fseek(mHandle, fmtStart + fmtSize, SEEK_SET);
+        mInput->seekg(fmtStart + std::streampos(fmtSize));
-        //unsigned pos = ftell(mHandle);
+
         mDataLength = 0;
         while (readChunk() != "data")
             ;
 
-        mFileName = filename;
+        mDataOffset = mInput->tellg();
-        mDataOffset = ftell(mHandle);
-
         mResampler.start(AUDIO_CHANNELS, mSamplerate, AUDIO_SAMPLERATE);
     }
     catch(...)
     {
-        fclose(mHandle); mHandle = nullptr;
+        mInput.reset();
         mLastError = static_cast<unsigned>(-1);
     }
     return isOpened();
@@ -175,10 +175,7 @@ bool WavFileReader::open(const std::tstring& filename)
 void WavFileReader::close()
 {
     LOCK;
-
+    mInput.reset();
-    if (nullptr != mHandle)
-        fclose(mHandle);
-    mHandle = nullptr;
 }
 
 int WavFileReader::samplerate() const
@@ -205,30 +202,38 @@ size_t WavFileReader::read(short* buffer, size_t samples)
 {
     LOCK;
 
-    if (!mHandle)
+    if (!mInput)
         return 0;
 
     // Get number of samples that must be read from source file
     size_t requiredBytes = mResampler.getSourceLength(samples) * mChannels * mBits / 8;
-    void* temp = alloca(requiredBytes);
+    bool useHeap = requiredBytes > sizeof mTempBuffer;
+    void* temp;
+    if (useHeap)
+        temp = malloc(requiredBytes);
+    else
+        temp = mTempBuffer;
+
     memset(temp, 0, requiredBytes);
 
     // Find required size of input buffer
     if (mDataLength)
     {
-        unsigned filePosition = ftell(mHandle);
+        auto filePosition = mInput->tellg();
 
         // Check how much data we can read
         size_t fileAvailable = mDataLength + mDataOffset - filePosition;
         requiredBytes = fileAvailable < requiredBytes ? fileAvailable : requiredBytes;
     }
 
-    size_t readBytes = fread(temp, 1, requiredBytes, mHandle);
+    size_t readBytes = tryReadBuffer(temp, requiredBytes);
 
     size_t processedBytes = 0;
     size_t result = mResampler.processBuffer(temp, readBytes, processedBytes,
                                              buffer, samples * 2 * AUDIO_CHANNELS);
 
+    if (useHeap)
+        free(temp);
     return result / 2 / AUDIO_CHANNELS;
 }
 
@@ -237,54 +242,50 @@ size_t WavFileReader::readRaw(short* buffer, size_t samples)
 {
     LOCK;
 
-    if (!mHandle)
+    if (!mInput)
         return 0;
 
     // Get number of samples that must be read from source file
-    int requiredBytes = samples * channels() * sizeof(short);
+    size_t requiredBytes = samples * channels() * sizeof(short);
 
     // Find required size of input buffer
     if (mDataLength)
     {
-        unsigned filePosition = ftell(mHandle);
+        auto filePosition = mInput->tellg();
 
         // Check how much data we can read
-        unsigned fileAvailable = mDataLength + mDataOffset - filePosition;
+        size_t fileAvailable = mDataLength + mDataOffset - filePosition;
         requiredBytes = (int)fileAvailable < requiredBytes ? (int)fileAvailable : requiredBytes;
     }
 
-    size_t readBytes = fread(buffer, 1, requiredBytes, mHandle);
+    size_t readBytes = tryReadBuffer(buffer, requiredBytes);
-
-
     return readBytes / channels() / sizeof(short);
 }
 
 bool WavFileReader::isOpened()
 {
     LOCK;
-
+    if (!mInput)
-    return (mHandle != 0);
+        return false;
+    return mInput->is_open();
 }
 
 void WavFileReader::rewind()
 {
     LOCK;
-
+    if (mInput)
-    if (mHandle)
+        mInput->seekg(mDataOffset);
-        fseek(mHandle, mDataOffset, SEEK_SET);
 }
 
-std::tstring WavFileReader::filename() const
+std::filesystem::path WavFileReader::path() const
 {
     LOCK;
-
+    return mPath;
-    return mFileName;
 }
 
 size_t WavFileReader::size() const
 {
     LOCK;
-
     return mDataLength;
 }
 
@@ -298,9 +299,8 @@ unsigned WavFileReader::lastError() const
 #define BITS_PER_CHANNEL  16
 
 WavFileWriter::WavFileWriter()
-    :mHandle(nullptr), mLengthOffset(0), mRate(AUDIO_SAMPLERATE), mChannels(1), mWritten(0)
+    :mLengthOffset(0), mSamplerate(AUDIO_SAMPLERATE), mChannels(1), mWritten(0)
-{
+{}
-}
 
 WavFileWriter::~WavFileWriter()
 {
@@ -313,68 +313,74 @@ void WavFileWriter::checkWriteResult(int result)
         throw Exception(ERR_WAVFILE_FAILED, errno);
 }
 
-bool WavFileWriter::open(const std::tstring& filename, int rate, int channels)
+void WavFileWriter::writeBuffer(const void* buffer, size_t sz)
+{
+    if (!mOutput)
+        return;
+
+    auto p = mOutput->tellp();
+    mOutput->write(reinterpret_cast<const char*>(buffer), sz);
+    if (mOutput->tellp() - p != sz)
+        throw Exception(ERR_WAVFILE_FAILED);
+}
+
+bool WavFileWriter::open(const std::filesystem::path& p, int samplerate, int channels)
 {
     LOCK;
-
     close();
-
+    mSamplerate = samplerate;
-    mRate = rate;
     mChannels = channels;
 
-#ifdef WIN32
+    mOutput = std::make_unique<std::ofstream>(p, std::ios::binary | std::ios::trunc);
-    mHandle = _wfopen(filename.c_str(), L"wb");
+    if (!mOutput)
-#else
-    mHandle = fopen(strx::makeUtf8(filename).c_str(), "wb");
-#endif
-    if (nullptr == mHandle)
     {
-        ICELogError(<< "Failed to create .wav file: filename = " << strx::makeUtf8(filename) << " , error = " << errno);
+        int errorcode = errno;
+        ICELogError(<< "Failed to create .wav file: filename = " << p << " , error = " << errorcode);
         return false;
     }
 
     // Write the .WAV header
     const char* riff = "RIFF";
-    checkWriteResult( fwrite(riff, 4, 1, mHandle) );
+    writeBuffer(riff, 4);
 
     // Write the file size
-    unsigned int filesize = 0;
+    uint32_t filesize = 0;
-    checkWriteResult( fwrite(&filesize, 4, 1, mHandle) );
+    writeBuffer(&filesize, sizeof filesize);
 
     const char* wavefmt = "WAVEfmt ";
-    checkWriteResult( fwrite(wavefmt, 8, 1, mHandle) );
+    writeBuffer(wavefmt, 8);
 
     // Set the format description
-    DWORD dwFmtSize = 16; /*= 16L*/;
+    uint32_t dwFmtSize = 16; /*= 16L*/;
-    checkWriteResult( fwrite(&dwFmtSize, sizeof(dwFmtSize), 1, mHandle) );
+    writeBuffer(&dwFmtSize, sizeof(dwFmtSize));
 
     WaveFormatEx format;
     format.wFormatTag = WAVE_FORMAT_PCM;
-    checkWriteResult( fwrite(&format.wFormatTag, sizeof(format.wFormatTag), 1, mHandle) );
+    writeBuffer(&format.wFormatTag, sizeof(format.wFormatTag));
 
     format.nChannels = mChannels;
-    checkWriteResult( fwrite(&format.nChannels, sizeof(format.nChannels), 1, mHandle) );
+    writeBuffer(&format.nChannels, sizeof(format.nChannels));
 
-    format.nSamplesPerSec = mRate;
+    format.nSamplesPerSec = mSamplerate;
-    checkWriteResult( fwrite(&format.nSamplesPerSec, sizeof(format.nSamplesPerSec), 1, mHandle) );
+    writeBuffer(&format.nSamplesPerSec, sizeof(format.nSamplesPerSec));
 
-    format.nAvgBytesPerSec = mRate * 2 * mChannels;
+    format.nAvgBytesPerSec = mSamplerate * 2 * mChannels;
-    checkWriteResult( fwrite(&format.nAvgBytesPerSec, sizeof(format.nAvgBytesPerSec), 1, mHandle) );
+    writeBuffer(&format.nAvgBytesPerSec, sizeof(format.nAvgBytesPerSec));
 
     format.nBlockAlign = 2 * mChannels;
-    checkWriteResult( fwrite(&format.nBlockAlign, sizeof(format.nBlockAlign), 1, mHandle) );
+    writeBuffer(&format.nBlockAlign, sizeof(format.nBlockAlign));
 
     format.wBitsPerSample = BITS_PER_CHANNEL;
-    checkWriteResult( fwrite(&format.wBitsPerSample, sizeof(format.wBitsPerSample), 1, mHandle) );
+    writeBuffer(&format.wBitsPerSample, sizeof(format.wBitsPerSample));
 
     const char* data = "data";
-    checkWriteResult( fwrite(data, 4, 1, mHandle));
+    writeBuffer(data, 4);
 
-    mFileName = filename;
+    mPath = p;
     mWritten  = 0;
 
-    mLengthOffset = ftell(mHandle);
+    mLengthOffset = mOutput->tellp();
-    checkWriteResult( fwrite(&mWritten, 4, 1, mHandle) );
+    writeBuffer(&mWritten, sizeof mWritten);
 
     return isOpened();
 }
@@ -382,51 +388,44 @@ bool WavFileWriter::open(const std::tstring& filename, int rate, int channels)
 void WavFileWriter::close()
 {
     LOCK;
-
+    mOutput.reset();
-    if (mHandle)
-    {
-        fclose(mHandle);
-        mHandle = nullptr;
-    }
 }
 
 size_t WavFileWriter::write(const void* buffer, size_t bytes)
 {
     LOCK;
 
-    if (!mHandle)
+    if (!mOutput)
         return 0;
 
-    // Seek the end of file
+    // Seek the end of file - here new data will be written
-    fseek(mHandle, 0, SEEK_END);
+    mOutput->seekp(0, std::ios_base::end);
     mWritten += bytes;
 
     // Write the data
-    fwrite(buffer, bytes, 1, mHandle);
+    writeBuffer(buffer, bytes);
 
     // Write file length
-    fseek(mHandle, 4, SEEK_SET);
+    mOutput->seekp(4, std::ios_base::beg);
-    int32_t fl = mWritten + 36;
+    uint32_t fl = mWritten + 36;
-    fwrite(&fl, sizeof(fl), 1, mHandle);
+    writeBuffer(&fl, sizeof(fl));
 
     // Write data length
-    fseek(mHandle, static_cast<long>(mLengthOffset), SEEK_SET);
+    mOutput->seekp(mLengthOffset, std::ios_base::beg);
-    checkWriteResult( fwrite(&mWritten, 4, 1, mHandle) );
+    writeBuffer(&mWritten, sizeof(mWritten));
 
     return bytes;
 }
 
-bool WavFileWriter::isOpened()
+bool WavFileWriter::isOpened() const
 {
     LOCK;
-
+    return mOutput.get();
-    return (mHandle != nullptr);
 }
 
-std::tstring WavFileWriter::filename()
+std::filesystem::path WavFileWriter::path() const
 {
     LOCK;
-
+    return mPath;
-    return mFileName;
 }
 

src/engine/audio/Audio_WavFile.h

@@ -12,6 +12,8 @@
 #include <string>
 #include <memory>
 #include <mutex>
+#include <filesystem>
+#include <fstream>
 
 
 namespace Audio
@@ -20,24 +22,27 @@ namespace Audio
 class WavFileReader
 {
 protected:
-    FILE*           mHandle;
+    uint16_t                        mChannels = 0;
-    uint16_t        mChannels;
+    uint16_t                        mBits = 0;
-    uint16_t        mBits;
+    int                             mSamplerate = 0;
-    int             mSamplerate;
+    std::filesystem::path           mPath;
-    std::tstring    mFileName;
+    mutable std::recursive_mutex    mFileMtx;
-    mutable std::recursive_mutex
+    size_t                          mDataOffset = 0;
-                    mFileMtx;
+    size_t                          mDataLength = 0;
-    size_t          mDataOffset;
-    size_t          mDataLength;
     Resampler                       mResampler;
-    unsigned        mLastError;
+    unsigned                        mLastError = 0;
+    std::unique_ptr<std::ifstream>  mInput;
+    uint8_t                         mTempBuffer[16384];
 
     std::string         readChunk();
+    void                readBuffer(void* buffer, size_t sz);       // This raises an exception if sz bytes are not read
+    size_t              tryReadBuffer(void* buffer, size_t sz);  // This doesn't raise an exception
+
 public:
     WavFileReader();
     ~WavFileReader();
 
-    bool open(const std::tstring& filename);
+    bool open(const std::filesystem::path& p);
     void close();
     bool isOpened();
     void rewind();
@@ -52,7 +57,7 @@ namespace Audio
     size_t read(short* buffer, size_t samples);
     size_t readRaw(short* buffer, size_t samples);
 
-    std::tstring filename() const;
+    std::filesystem::path path() const;
     size_t size() const;
 
     unsigned lastError() const;
@@ -63,25 +68,25 @@ namespace Audio
 class WavFileWriter
 {
 protected:
-    FILE*                   mHandle;        /// Handle of audio file.
+    std::unique_ptr<std::ofstream>  mOutput;            /// Handle of audio file.
-    std::tstring            mFileName;      /// Path to requested audio file.
+    std::filesystem::path           mPath;              /// Path to requested audio file.
-    std::recursive_mutex    mFileMtx;       /// Mutex to protect this instance.
+    mutable std::recursive_mutex    mFileMtx;           /// Mutex to protect this instance.
-    size_t                  mWritten;       /// Amount of written data (in bytes)
+    size_t                          mWritten = 0;       /// Amount of written data (in bytes)
-    size_t                  mLengthOffset;  /// Position of length field.
+    size_t                          mLengthOffset = 0;  /// Position of length field.
-    int                     mRate,
+    int                             mSamplerate = 0,
-                            mChannels;
+                                    mChannels = 0;
 
     void checkWriteResult(int result);
-
+    void writeBuffer(const void* buffer, size_t sz);
 public:
     WavFileWriter();
     ~WavFileWriter();
 
-    bool open(const std::tstring& filename, int rate, int channels);
+    bool open(const std::filesystem::path& p, int samplerate, int channels);
     void close();
-    bool isOpened();
+    bool isOpened() const;
     size_t write(const void* buffer, size_t bytes);
-    std::tstring filename();
+    std::filesystem::path path() const;
 };
 
 typedef std::shared_ptr<WavFileWriter> PWavFileWriter;

src/engine/audio/Audio_Wmme.h

@@ -8,7 +8,7 @@
 
 #ifdef TARGET_WIN
 
-#include "../config.h"
+#include "../engine_config.h"
 
 #include <winsock2.h>
 #include <windows.h>

src/engine/audio/CMakeLists.txt

@@ -1,7 +1,7 @@
 project (audio_lib)
 
 # Rely on C++ 11
-set (CMAKE_CXX_STANDARD 11)
+set (CMAKE_CXX_STANDARD 20)
 set (CMAKE_CXX_STANDARD_REQUIRED ON)
 
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)

src/engine/config.h

@@ -1,113 +0,0 @@
-/* Copyright(C) 2007-2020 VoIP objects (voipobjects.com)
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#ifndef __TOOLKIT_CONFIG_H
-#define __TOOLKIT_CONFIG_H
-
-#define USE_SPEEX_AEC
-
-// TODO: test implementation with webrtc aec; be careful - it needs fixes!
-//#define USE_WEBRTC_AEC
-#define USER
-
-
-#define AUDIO_SAMPLE_WIDTH 16
-#define AUDIO_CHANNELS 1
-
-// Samplerate must be 8 / 16 / 24 / 32 / 48 KHz
-#define AUDIO_SAMPLERATE 8000
-#define AUDIO_MIC_BUFFER_COUNT 16
-#define AUDIO_MIC_BUFFER_LENGTH 10
-#define AUDIO_MIC_BUFFER_SIZE  (AUDIO_MIC_BUFFER_LENGTH * AUDIO_SAMPLERATE / 1000 * 2 * AUDIO_CHANNELS)
-#define AUDIO_SPK_BUFFER_COUNT 16
-#define AUDIO_SPK_BUFFER_LENGTH 10
-#define AUDIO_SPK_BUFFER_SIZE (AUDIO_SPK_BUFFER_LENGTH * AUDIO_SAMPLERATE / 1000 * 2 * AUDIO_CHANNELS)
-#define AUDIO_MIX_CHANNEL_COUNT 16
-#define AUDIO_DEVICEPAIR_INPUTBUFFER 16384
-
-// Avoid too high resampler quality - it can take many CPU and cause gaps in playing
-#define AUDIO_RESAMPLER_QUALITY 1
-#define AEC_FRAME_TIME 10
-#define AEC_TAIL_TIME 160
-
-
-// Defined these two lines to get dumping of audio input/output
-//#define AUDIO_DUMPINPUT
-//#define AUDIO_DUMPOUTPUT
-
-
-#define UA_REGISTRATION_TIME 3600
-#define UA_MEDIA_PORT_START  20000
-#define UA_MEDIA_PORT_FINISH 30000
-#define UA_MAX_UDP_PACKET_SIZE 576
-#define UA_PUBLICATION_ID "314"
-
-#define MT_SAMPLERATE AUDIO_SAMPLERATE
-
-#define MT_MAXAUDIOFRAME 1440
-#define MT_MAXRTPPACKET 1500
-#define MT_DTMF_END_PACKETS 3
-
-#define RTP_BUFFER_HIGH 24480
-#define RTP_BUFFER_LOW 10
-#define RTP_BUFFER_PREBUFFER 80
-#define RTP_DECODED_CAPACITY 2048
-
-#define DEFAULT_SUBSCRIPTION_TIME 1200
-#define DEFAULT_SUBSCRIPTION_REFRESHTIME 500
-
-#define PRESENCE_IN_REG_HEADER "PresenceInReg"
-
-// Maximum UDP packet length
-#define MAX_UDPPACKET_SIZE 65535
-#define MAX_VALID_UDPPACKET_SIZE 2048
-
-// AMR codec defines - it requires USE_AMR_CODEC defined
-// #define USE_AMR_CODEC
-#define MT_AMRNB_PAYLOADTYPE 112
-#define MT_AMRNB_CODECNAME "amr"
-
-#define MT_AMRNB_OCTET_PAYLOADTYPE 113
-
-#define MT_AMRWB_PAYLOADTYPE 96
-#define MT_AMRWB_CODECNAME "amr-wb"
-
-#define MT_AMRWB_OCTET_PAYLOADTYPE 97
-
-#define MT_GSMEFR_PAYLOADTYPE 126
-#define MT_GSMEFR_CODECNAME "GERAN-EFR"
-
-#define MT_EVS_PAYLOADTYPE 127
-#define MT_EVS_CODECNAME "EVS"
-
-// OPUS codec defines
-// #define USE_OPUS_CODEC
-#define MT_OPUS_CODEC_PT 106
-
-// ILBC codec defines
-#define MT_ILBC20_PAYLOADTYPE -1
-#define MT_ILBC30_PAYLOADTYPE -1
-
-// ISAC codec defines
-#define MT_ISAC16K_PAYLOADTYPE -1
-#define MT_ISAC32K_PAYLOADTYPE -1
-
-// GSM HR payload type
-#define MT_GSMHR_PAYLOADTYPE -1
-
-// Mirror buffer capacity
-#define MT_MIRROR_CAPACITY 32768
-
-// Mirror buffer readiness threshold - 50 milliseconds
-#define MT_MIRROR_PREBUFFER (MT_SAMPLERATE / 10)
-
-#if defined(TARGET_OSX) || defined(TARGET_LINUX)
-# define TEXT(X) X
-#endif
-
-// In milliseconds
-#define MT_SEVANA_FRAME_TIME 680
-
-#endif

src/engine/endpoint/EP_AudioProvider.cpp

@@ -99,7 +99,6 @@ void AudioProvider::updateSdpOffer(resip::SdpContents::Session::Medium& sdp, Sdp
         else
             sdp.addAttribute("crypto", resip::Data(createCryptoAttribute(mSrtpSuite)));
     }
-#if defined(USE_RESIP_INTEGRATION)
 
     // Use CodecListPriority mCodecPriority adapter to work with codec priorities
     if (mAvailableCodecs.empty())
@@ -114,7 +113,7 @@ void AudioProvider::updateSdpOffer(resip::SdpContents::Session::Medium& sdp, Sdp
         if (mRemoteTelephoneCodec)
             sdp.addCodec(resip::SdpContents::Session::Codec::TelephoneEvent);
     }
-#endif
+
 
     // Publish stream state
     const char* attr = nullptr;
@@ -229,10 +228,8 @@ bool AudioProvider::processSdpOffer(const resip::SdpContents::Session::Medium& m
     for (int localIndex=0; localIndex<mCodecPriority.count(mTerminal.codeclist()); localIndex++)
     {
         MT::Codec::Factory& factory = mCodecPriority.codecAt(mTerminal.codeclist(), localIndex);
-#if defined(USE_RESIP_INTEGRATION)
         if ((pt = factory.processSdp(media.codecs(), sdpDirection)) != -1)
             mAvailableCodecs.push_back(RemoteCodec(&factory, pt));
-#endif
     }
 
     if (!mAvailableCodecs.size())
@@ -303,26 +300,12 @@ std::string AudioProvider::createCryptoAttribute(SrtpSuite suite)
     if (!mActiveStream)
         return "";
 
-    // Use tag 1 - it is ok, as we use only single crypto attribute
-    int   srtpTag = 1;
-
     // Print key to base64 string
     PByteBuffer keyBuffer = mActiveStream->srtp().outgoingKey(suite).first;
     resip::Data d(keyBuffer->data(), keyBuffer->size());
     resip::Data keyText = d.base64encode();
 
-    // Create "crypto" attribute value
+    return std::format("{} {} inline:{}", 1, toString(suite), keyText.c_str());
-    char buffer[512];
-    const char* suiteName = NULL;
-    switch (suite)
-    {
-    case SRTP_AES_128_AUTH_80: suiteName = SRTP_SUITE_NAME_1; break;
-    case SRTP_AES_256_AUTH_80: suiteName = SRTP_SUITE_NAME_2; break;
-    default: assert(0);
-    }
-    sprintf(buffer, "%d %s inline:%s", srtpTag, suiteName, keyText.c_str());
-
-    return buffer;
 }
 
 SrtpSuite AudioProvider::processCryptoAttribute(const resip::Data& value, ByteBuffer& key)
@@ -343,15 +326,7 @@ SrtpSuite AudioProvider::processCryptoAttribute(const resip::Data& value, ByteBu
     resip::Data rawkey = keyText.base64decode();
     key = ByteBuffer(rawkey.c_str(), rawkey.size());
 
-    // Open srtp
+    return toSrtpSuite(suite);
-    SrtpSuite result = SRTP_NONE;
-    if (strcmp(suite, SRTP_SUITE_NAME_1) == 0)
-        result = SRTP_AES_128_AUTH_80;
-    else
-        if (strcmp(suite, SRTP_SUITE_NAME_2) == 0)
-            result = SRTP_AES_256_AUTH_80;
-
-    return result;
 }
 
 void AudioProvider::findRfc2833(const resip::SdpContents::Session::Medium::CodecContainer& codecs)

src/engine/endpoint/EP_AudioProvider.h

@@ -74,6 +74,7 @@ public:
   void setupMirror(bool enable);
 
   void configureMediaObserver(MT::Stream::MediaObserver* observer, void* userTag);
+  static SrtpSuite processCryptoAttribute(const resip::Data& value, ByteBuffer& key);
 
 protected:
   // SDP's stream name
@@ -109,7 +110,6 @@ protected:
   void* mMediaObserverTag = nullptr;
 
   std::string createCryptoAttribute(SrtpSuite suite);
-  SrtpSuite processCryptoAttribute(const resip::Data& value, ByteBuffer& key);
   void findRfc2833(const resip::SdpContents::Session::Medium::CodecContainer& codecs);
 
   // Implements setState() logic. This allows to be called from constructor (it is not virtual function)

src/engine/endpoint/EP_Engine.cpp

@@ -174,7 +174,7 @@ void UserAgent::start()
 #if defined(TARGET_WIN)
     s = new resip::WinSecurity();
 #elif defined(TARGET_OSX)
-  s = new resip::MacSecurity();
+    s = new resip::Security();
 #elif defined(TARGET_LINUX)
     s = new resip::Security("/etc/ssl/certs");
 #elif defined(TARGET_ANDROID)
@@ -486,6 +486,8 @@ void UserAgent::process()
 void UserAgent::addRootCert(const ByteBuffer& data)
 {
     LOCK;
+    if (!mStack)
+        return;
     resip::Data b(data.data(), data.size());
     try {
         mStack->getSecurity()->addRootCertPEM(b);

src/engine/endpoint/EP_Engine.h

@@ -47,7 +47,7 @@
 #include "../ice/ICETime.h"
 #include <sstream>
 #include <time.h>
-#include "../config.h"
+#include "../engine_config.h"
 #include "EP_Session.h"
 #include "EP_Observer.h"
 #include "EP_DataProvider.h"

src/engine/endpoint/EP_Session.cpp

@@ -445,7 +445,6 @@ void Session::getSessionInfo(Session::InfoOptions options, VariantMap& info)
     MT::Statistics stat;
 
     // Iterate all session providers
-    stat.reset();
     Stream* media = nullptr;
     for (Stream& stream: mStreamList)
     {
@@ -469,7 +468,7 @@ void Session::getSessionInfo(Session::InfoOptions options, VariantMap& info)
     info[SessionInfo_SentRtp] = static_cast<int>(stat.mSentRtp);
     info[SessionInfo_SentRtcp] = static_cast<int>(stat.mSentRtcp);
     if (stat.mFirstRtpTime)
-        info[SessionInfo_Duration] = static_cast<int>(std::chrono::duration_cast<std::chrono::seconds>(std::chrono::system_clock::now() - *(stat.mFirstRtpTime)).count());
+        info[SessionInfo_Duration] = static_cast<int>(std::chrono::duration_cast<std::chrono::seconds>(std::chrono::steady_clock::now() - *(stat.mFirstRtpTime)).count());
     else
         info[SessionInfo_Duration] = 0;
 

src/engine/endpoint/EP_Session.h

@@ -35,7 +35,7 @@
 #include <atomic>
 #include <time.h>
 
-#include "../config.h"
+#include "../engine_config.h"
 #include "EP_Account.h"
 #include "EP_DataProvider.h"
 #include "EP_AudioProvider.h"

src/engine/engine_config.h

@@ -0,0 +1,117 @@
+/* Copyright(C) 2007-2023 VoIP objects (voipobjects.com)
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef __TOOLKIT_CONFIG_H
+#define __TOOLKIT_CONFIG_H
+
+#define USE_SPEEX_AEC
+
+// TODO: test implementation with webrtc aec; be careful - it needs fixes!
+//#define USE_WEBRTC_AEC
+#define USER
+
+
+#define AUDIO_SAMPLE_WIDTH 16
+#define AUDIO_CHANNELS 1
+
+// Samplerate must be 8 / 16 / 24 / 32 / 48 KHz
+#define AUDIO_SAMPLERATE 48000
+#define AUDIO_MIC_BUFFER_COUNT 16
+#define AUDIO_MIC_BUFFER_LENGTH 10
+#define AUDIO_MIC_BUFFER_SIZE  (AUDIO_MIC_BUFFER_LENGTH * AUDIO_SAMPLERATE / 1000 * 2 * AUDIO_CHANNELS)
+#define AUDIO_SPK_BUFFER_COUNT 16
+#define AUDIO_SPK_BUFFER_LENGTH 10
+#define AUDIO_SPK_BUFFER_SIZE (AUDIO_SPK_BUFFER_LENGTH * AUDIO_SAMPLERATE / 1000 * 2 * AUDIO_CHANNELS)
+#define AUDIO_MIX_CHANNEL_COUNT 16
+#define AUDIO_DEVICEPAIR_INPUTBUFFER 16384
+
+// Avoid too high resampler quality - it can take many CPU and cause gaps in playing
+#define AUDIO_RESAMPLER_QUALITY 1
+#define AEC_FRAME_TIME 10
+#define AEC_TAIL_TIME 160
+
+
+// Defined these two lines to get dumping of audio input/output
+//#define AUDIO_DUMPINPUT
+//#define AUDIO_DUMPOUTPUT
+
+
+#define UA_REGISTRATION_TIME 3600
+#define UA_MEDIA_PORT_START  20000
+#define UA_MEDIA_PORT_FINISH 30000
+#define UA_MAX_UDP_PACKET_SIZE 576
+#define UA_PUBLICATION_ID "314"
+
+#define MT_SAMPLERATE AUDIO_SAMPLERATE
+
+#define MT_MAXAUDIOFRAME     1440
+#define MT_MAXRTPPACKET      1500
+#define MT_DTMF_END_PACKETS  3
+
+#define RTP_BUFFER_HIGH      0
+#define RTP_BUFFER_LOW       0
+#define RTP_BUFFER_PREBUFFER 0
+
+// #define RTP_BUFFER_HIGH      160
+// #define RTP_BUFFER_LOW       10
+// #define RTP_BUFFER_PREBUFFER 160
+#define RTP_DECODED_CAPACITY 2048
+
+#define DEFAULT_SUBSCRIPTION_TIME 1200
+#define DEFAULT_SUBSCRIPTION_REFRESHTIME 500
+
+#define PRESENCE_IN_REG_HEADER "PresenceInReg"
+
+// Maximum UDP packet length
+#define MAX_UDPPACKET_SIZE 65535
+#define MAX_VALID_UDPPACKET_SIZE 2048
+
+// AMR codec defines - it requires USE_AMR_CODEC defined
+// #define USE_AMR_CODEC
+#define MT_AMRNB_PAYLOADTYPE 112
+#define MT_AMRNB_CODECNAME "amr"
+
+#define MT_AMRNB_OCTET_PAYLOADTYPE 113
+
+#define MT_AMRWB_PAYLOADTYPE 96
+#define MT_AMRWB_CODECNAME "amr-wb"
+
+#define MT_AMRWB_OCTET_PAYLOADTYPE 97
+
+#define MT_GSMEFR_PAYLOADTYPE 126
+#define MT_GSMEFR_CODECNAME "GERAN-EFR"
+
+#define MT_EVS_PAYLOADTYPE 127
+#define MT_EVS_CODECNAME "EVS"
+
+// OPUS codec defines
+// #define USE_OPUS_CODEC
+#define MT_OPUS_CODEC_PT 106
+
+// ILBC codec defines
+#define MT_ILBC20_PAYLOADTYPE -1
+#define MT_ILBC30_PAYLOADTYPE -1
+
+// ISAC codec defines
+#define MT_ISAC16K_PAYLOADTYPE -1
+#define MT_ISAC32K_PAYLOADTYPE -1
+
+// GSM HR payload type
+#define MT_GSMHR_PAYLOADTYPE -1
+
+// Mirror buffer capacity
+#define MT_MIRROR_CAPACITY 32768
+
+// Mirror buffer readiness threshold - 50 milliseconds
+#define MT_MIRROR_PREBUFFER (MT_SAMPLERATE / 10)
+
+#if defined(TARGET_OSX) || defined(TARGET_LINUX)
+# define TEXT(X) X
+#endif
+
+// In milliseconds
+#define MT_SEVANA_FRAME_TIME 680
+
+#endif

src/engine/helper/CMakeLists.txt

@@ -2,11 +2,9 @@ cmake_minimum_required (VERSION 3.15)
 project (helper_lib)
 
 # Rely on C++ 11
-set (CMAKE_CXX_STANDARD 11)
+set (CMAKE_CXX_STANDARD 20)
 set (CMAKE_CXX_STANDARD_REQUIRED ON)
 
-option (USE_NULL_UUID "When enabled linking to libuuid is avoided" OFF)
-
 set (CMAKE_POSITION_INDEPENDENT_CODE ON)
 
 file (GLOB HELPER_LIB_SOURCES "*.cpp" "*.h")
@@ -17,3 +15,6 @@ set_property(TARGET helper_lib PROPERTY MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<C
 # Private include directories
 target_include_directories(helper_lib PUBLIC ../../libs/ ../../engine ../ .)
 target_compile_definitions(helper_lib PRIVATE -D_CRT_SECURE_NO_WARNINGS -D_UNICODE)
+if (TARGET_LINUX)
+target_link_libraries (helper_lib PUBLIC uuid)
+endif()

src/engine/helper/HL_File.cpp

@@ -32,23 +32,24 @@ void FileHelper::remove(const char* s)
     ::remove(s);
 }
 
-std::string FileHelper::gettempname()
+// std::string FileHelper::gettempname()
-{
+// {
-#if defined(TARGET_LINUX) || defined(TARGET_ANDROID)
+// #if defined(TARGET_LINUX) || defined(TARGET_ANDROID)
-    char template_filename[L_tmpnam] = "rtphone_XXXXXXX.tmp";
+//     char template_filename[L_tmpnam] = "rtphone_XXXXXXX.tmp";
-    mkstemp(template_filename);
+//     int code = mkstemp(template_filename);
-    return template_filename;
-#elif defined(TARGET_WIN)
-    char buffer[L_tmpnam];
-    tmpnam(buffer);
 
-    return buffer;
+//     return template_filename;
-#elif defined(TARGET_OSX)
+// #elif defined(TARGET_WIN)
-    char template_filename[L_tmpnam] = "rtphone_XXXXXXX.tmp";
+//     char buffer[L_tmpnam];
-    mktemp(template_filename);
+//     tmpnam(buffer);
-    return template_filename;
+
-#endif
+//     return buffer;
-}
+// #elif defined(TARGET_OSX)
+//     char template_filename[L_tmpnam] = "rtphone_XXXXXXX.tmp";
+//     mktemp(template_filename);
+//     return template_filename;
+// #endif
+// }
 
 bool FileHelper::isAbsolute(const std::string& s)
 {
@@ -109,3 +110,32 @@ size_t FileHelper::getFreespace(const std::string& path)
 #endif
     return r;
 }
+
+std::string FileHelper::expandUserHome(const std::string &path)
+{
+    if (path.empty() || path[0] != '~')
+        return path;  // No expansion needed
+    
+    const char* home_dir = nullptr;
+
+#ifdef TARGET_WIN
+    home_dir = std::getenv("USERPROFILE");
+    if (!home_dir)
+    {
+        home_dir = std::getenv("HOMEDRIVE");
+        const char* homepath = std::getenv("HOMEPATH");
+        if (home_dir && homepath) {
+            std::string fullpath(home_dir);
+            fullpath += homepath;
+            return fullpath + path.substr(1);
+        }
+    }
+#else
+    home_dir = std::getenv("HOME");
+#endif
+    
+    if (!home_dir)
+        throw std::runtime_error("Unable to determine the home directory");
+    
+    return std::string(home_dir) + path.substr(1);
+}

src/engine/helper/HL_File.h

@@ -12,7 +12,7 @@ public:
     static void remove(const std::string& s);
     static void remove(const char* s);
 
-    static std::string gettempname();
+    // static std::string gettempname();
     static bool isAbsolute(const std::string& s);
 
     static std::string getCurrentDir();
@@ -23,6 +23,7 @@ public:
     // Returns free space on volume for path
     // Works for Linux only. For other systems (size_t)-1 is returned (for errors too)
     static size_t getFreespace(const std::string& path);
+    static std::string expandUserHome(const std::string& path);
 };
 
 #endif

src/engine/helper/HL_NetworkSocket.cpp

@@ -7,7 +7,7 @@
 # include <asm/ioctls.h>
 #endif
 
-#include "../config.h"
+#include "../engine_config.h"
 #include "HL_NetworkSocket.h"
 
 #if defined(TARGET_OSX) || defined(TARGET_LINUX)
@@ -27,7 +27,7 @@ DatagramSocket::DatagramSocket()
 
 DatagramSocket::~DatagramSocket()
 {
-  closeSocket();
+  internalClose();
 }
 
 void DatagramSocket::open(int family)
@@ -85,7 +85,7 @@ unsigned DatagramSocket::recvDatagram(InternetAddress &src, void *packetBuffer,
     return 0;
 }
 
-void DatagramSocket::closeSocket()
+void DatagramSocket::internalClose()
 {
   if (mHandle != INVALID_SOCKET)
   {
@@ -98,6 +98,11 @@ void DatagramSocket::closeSocket()
   }
 }
 
+void DatagramSocket::closeSocket()
+{
+    internalClose();
+}
+
 bool DatagramSocket::isValid() const
 {
   return mHandle != INVALID_SOCKET;
@@ -163,7 +168,7 @@ unsigned DatagramAgreggator::count()
 bool DatagramAgreggator::hasDataAtIndex(unsigned index)
 {
   PDatagramSocket socket = mSocketVector[index];
-  return (FD_ISSET(socket->mHandle, &mReadSet) != 0);
+  return FD_ISSET(socket->mHandle, &mReadSet);
 }
 
 PDatagramSocket DatagramAgreggator::socketAt(unsigned index)

src/engine/helper/HL_NetworkSocket.h

@@ -36,10 +36,12 @@ public:
   virtual SOCKET    socket() const;
 
   virtual void open(int family);
+
 protected:
   int mFamily;
   SOCKET mHandle;
   int mLocalPort;
+  void internalClose();
 };
 typedef std::shared_ptr<DatagramSocket> PDatagramSocket;
 

src/engine/helper/HL_Process.cpp

@@ -39,7 +39,7 @@ std::string OsProcess::execCommand(const std::string& cmd)
     PROCESS_INFORMATION pi  = { 0 };
 
     char* cmdline = (char*)_alloca(cmd.size()+1);
-    strcpy(cmdline, StringHelper::replace(cmd, "/", "\\").c_str());
+    strcpy(cmdline, strx::replace(cmd, "/", "\\").c_str());
 
     BOOL fSuccess = CreateProcessA( nullptr, cmdline, NULL, NULL, TRUE, CREATE_NEW_CONSOLE, NULL, NULL, &si, &pi);
     if (! fSuccess)
@@ -114,7 +114,7 @@ std::shared_ptr<std::thread> OsProcess::asyncExecCommand(const std::string& cmdl
     memset(&pi, 0, sizeof pi);
 
     char* cmdbuffer = (char*)_alloca(cmdline.size()+1);
-    strcpy(cmdbuffer, StringHelper::replace(cmdline, "/", "\\").c_str());
+    strcpy(cmdbuffer, strx::replace(cmdline, "/", "\\").c_str());
 
 
     BOOL fSuccess = CreateProcessA( nullptr, cmdbuffer, nullptr, nullptr, TRUE,
@@ -160,14 +160,14 @@ std::shared_ptr<std::thread> OsProcess::asyncExecCommand(const std::string& cmdl
                 {
                     std::string line(buf, cr - buf -1);
                     if (callback)
-                        callback(StringHelper::trim(line));
+                        callback(strx::trim(line));
                     memmove(buf, cr + 1, strlen(cr+1) + 1);
                 }
             }
         } //for
 
         if (buf[0])
-            callback(StringHelper::trim(std::string(buf)));
+            callback(strx::trim(std::string(buf)));
 
         char ctrlc = 3;
         //if (finish_flag)
@@ -278,12 +278,12 @@ std::shared_ptr<std::thread> OsProcess::asyncExecCommand(const std::string& cmdl
             }
             while (r == sizeof(buffer) - 1);
 
-            if (lines.find("\n") != std::string::npos && line_callback)
+            if (lines.find('\n') != std::string::npos && line_callback)
             {
                 std::string::size_type p = 0;
                 while (p < lines.size())
                 {
-                    std::string::size_type d = lines.find("\n", p);
+                    std::string::size_type d = lines.find('\n', p);
                     if (d != std::string::npos)
                     {
                         if (line_callback)

src/engine/helper/HL_Rtp.cpp

@@ -8,6 +8,10 @@
 # include <Windows.h>
 #endif
 
+#if defined(TARGET_LINUX) || defined(TARGET_ANDROID)
+# include <arpa/inet.h>
+#endif
+
 #include "HL_Rtp.h"
 #include "HL_Exception.h"
 #include "HL_String.h"
@@ -52,8 +56,12 @@ bool RtpHelper::isRtp(const void* buffer, size_t length)
     if (length < 12)
         return false;
 
-    unsigned char _type = reinterpret_cast<const RtpHeader*>(buffer)->pt;
+    const RtpHeader* h = reinterpret_cast<const RtpHeader*>(buffer);
-    bool rtp = ( (_type & 0x7F) >= 96 && (_type & 0x7F) <= 127) || ((_type & 0x7F) < 35);
+    if (h->version != 0b10)
+        return false;
+
+    unsigned char pt = h->pt;
+    bool rtp = ( (pt & 0x7F) >= 96 && (pt & 0x7F) <= 127) || ((pt & 0x7F) < 35);
     return rtp;
 }
 
@@ -62,9 +70,8 @@ bool RtpHelper::isRtpOrRtcp(const void* buffer, size_t length)
 {
     if (length < 12)
         return false;
-    unsigned char b = ((const unsigned char*)buffer)[0];
+    const RtcpHeader* h = reinterpret_cast<const RtcpHeader*>(buffer);
-
+    return h->version == 0b10;
-    return (b & 0xC0 ) == 128;
 }
 
 bool RtpHelper::isRtcp(const void* buffer, size_t length)
@@ -75,9 +82,9 @@ bool RtpHelper::isRtcp(const void* buffer, size_t length)
 unsigned RtpHelper::findSsrc(const void* buffer, size_t length)
 {
     if (isRtp(buffer, length))
-        return reinterpret_cast<const RtpHeader*>(buffer)->ssrc;
+        return ntohl(reinterpret_cast<const RtpHeader*>(buffer)->ssrc);
     else
-        return reinterpret_cast<const RtcpHeader*>(buffer)->ssrc;
+        return ntohl(reinterpret_cast<const RtcpHeader*>(buffer)->ssrc);
 }
 
 void RtpHelper::setSsrc(void* buffer, size_t length, uint32_t ssrc)

src/engine/helper/HL_Rtp.h

@@ -1,4 +1,4 @@
-/* Copyright(C) 2007-2017 VoIPobjects (voipobjects.com)
+/* Copyright(C) 2007-2025 VoIPobjects (voipobjects.com)
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
@@ -10,11 +10,8 @@
 # include "jrtplib/src/rtppacket.h"
 #endif
 
-#include "HL_Uuid.h"
+#include <cstdint>
-#include "HL_InternetAddress.h"
+#include <stdlib.h>
-
-#include <vector>
-#include <string>
 
 // Class to carry rtp/rtcp socket pair
 template<class T>

src/engine/helper/HL_SocketHeap.cpp

@@ -3,7 +3,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#include "../config.h"
+#include "../engine_config.h"
 #ifdef WIN32
 #include <winsock2.h>
 #include <windows.h>
@@ -127,7 +127,7 @@ PDatagramSocket SocketHeap::allocSocket(int family, SocketSink* sink, int port)
     if (sock == INVALID_SOCKET)
     {
         // Return null socket
-        PDatagramSocket result(new DatagramSocket());
+        auto result = std::make_shared<DatagramSocket>();
         result->mLocalPort = port;
         result->mFamily = family;
         return result;
@@ -170,7 +170,7 @@ PDatagramSocket SocketHeap::allocSocket(int family, SocketSink* sink, int port)
         closesocket(sock);
         throw Exception(ERR_NET_FAILED, WSAGetLastError());
     }
-    PDatagramSocket resultObject(new DatagramSocket());
+    auto resultObject = std::make_shared<DatagramSocket>();
     resultObject->mLocalPort = testport;
     resultObject->mHandle = sock;
     if (!resultObject->setBlocking(false))

src/engine/helper/HL_SocketHeap.h

@@ -6,7 +6,7 @@
 #ifndef __SOCKET_HEAP_H
 #define __SOCKET_HEAP_H
 
-#include "../config.h"
+#include "../engine_config.h"
 #include <map>
 #include <vector>
 #include <algorithm>

src/engine/helper/HL_String.cpp

@@ -93,7 +93,11 @@ int strx::toInt(const char *s, int defaultValue, bool* isOk)
 uint64_t strx::toUint64(const char* s, uint64_t def, bool *isOk)
 {
     uint64_t result = def;
-    if (sscanf(s, "%" SCNu64, &result) != 1)
+#if defined(TARGET_WIN)
+    if (sscanf(s, "%I64d", &result) != 1)
+#else
+    if (sscanf(s, "%llu", &result) != 1)
+#endif
     {
         if (isOk)
             *isOk = false;
@@ -408,3 +412,46 @@ std::string strx::uppercase(const std::string& s)
     std::transform(r.begin(), r.end(), r.begin(), ::toupper);
     return r;
 }
+
+std::string strx::lowercase(const std::string& s)
+{
+    std::string r(s);
+    std::transform(r.begin(), r.end(), r.begin(), ::tolower);
+    return r;
+}
+
+std::string strx::removeQuotes(const std::string& s)
+{
+    std::string r(s);
+    if (s.empty())
+        return s;
+
+    if (r.front() == '"')
+        r = r.substr(1);
+
+    if (r.back() == '"')
+        r = r.substr(0, r.size()-1);
+
+    return r;
+}
+
+#if defined(TARGET_WIN)
+
+// MSVC++ lacks memmem support
+const void *memmem(const void *haystack, size_t haystack_len,
+                   const void * const needle, const size_t needle_len)
+{
+    if (!haystack || !haystack_len || !needle || !needle_len)
+        return nullptr;
+
+    for (const char *h = (const char*)haystack;
+         haystack_len >= needle_len;
+         ++h, --haystack_len) {
+        if (!memcmp(h, needle, needle_len)) {
+            return h;
+        }
+    }
+    return nullptr;
+}
+#endif
+

src/engine/helper/HL_String.h

@@ -9,6 +9,7 @@
 #include <vector>
 #include <string>
 #include <sstream>
+#include <cstdint>
 #include "HL_Types.h"
 
 #ifdef TARGET_OSX
@@ -19,6 +20,9 @@
 class strx
 {
 public:
+    static std::string extractFilename(const std::string& path);
+    static std::string appendPath(const std::string& s1, const std::string& s2);
+
     static std::string makeUtf8(const std::tstring& arg);
     static std::string toUtf8(const std::tstring& arg);
     static std::tstring makeTstring(const std::string& arg);
@@ -29,15 +33,13 @@ public:
     static std::string toHex(const void* ptr);
     static std::string toHex(const uint8_t* input, size_t inputLength);
     static std::string intToString(int value);
+    static std::string prefixLines(const std::string& source, const std::string& prefix);
     static std::string doubleToString(double value, int precision);
     static int         fromHex2Int(const std::string& s);
     static std::string fromHex2String(const std::string& s);
     static float       toFloat(const std::string& s, float defaultValue = 0.0, bool* isOk = nullptr);
 
-    static std::string  extractFilename(const std::string& path);
-    static std::string  appendPath(const std::string& s1, const std::string& s2);
 
-    static std::string  prefixLines(const std::string& source, const std::string& prefix);
     static const char* findSubstring(const char* buffer, const char* substring, size_t bufferLength);
 
     static void        split(const std::string& src, std::vector<std::string>& dst, const std::string& delims);
@@ -49,7 +51,7 @@ public:
         std::ostringstream s;
         for (const auto& i : v)
         {
-            if (&i != &v[0])
+            if (&i != &v.front())
                 s << delimiter;
             s << i;
         }
@@ -67,8 +69,10 @@ public:
     static bool startsWith(const std::string& s, const std::string& prefix);
     static bool endsWith(const std::string& s, const std::string& suffix);
     static int stringToDuration(const std::string& s);
-    static std::string  uppercase(const std::string& s);
     
+	static std::string  uppercase(const std::string& s);
+    static std::string  lowercase(const std::string& s);
+    static std::string  removeQuotes(const std::string& s);
 };
 
 class XcapHelper
@@ -81,4 +85,11 @@ public:
 };
 
 
+#if defined(TARGET_WIN)
+
+// MSVC++ lacks memmem support
+extern const void *memmem(const void *haystack, size_t haystack_len,
+                          const void * const needle, const size_t needle_len);
+#endif
+
 #endif

src/engine/helper/HL_Sync.cpp

@@ -77,19 +77,21 @@ uint64_t ThreadHelper::getCurrentId()
 // ------------------- TimeHelper ---------------
 using namespace std::chrono;
 
+// Milliseconds starting from the epoch
 static uint64_t TimestampStartPoint = duration_cast<milliseconds>(steady_clock::now().time_since_epoch()).count();
+
+// Seconds starting from the epoch
 static time_t TimestampBase = time(nullptr);
 
-uint64_t TimeHelper::getTimestamp()
+// Returns number of milliseconds starting from 01 Jan 1970 GMT
+uint64_t chronox::getTimestamp()
 {
     time_point<steady_clock> t = steady_clock::now();
-
     uint64_t ms = duration_cast< milliseconds >(t.time_since_epoch()).count();
-
     return ms - TimestampStartPoint + TimestampBase * 1000;
 }
 
-uint64_t TimeHelper::getUptime()
+uint64_t chronox::getUptime()
 {
     time_point<steady_clock> t = steady_clock::now();
 
@@ -98,7 +100,7 @@ uint64_t TimeHelper::getUptime()
     return ms - TimestampStartPoint;
 }
 
-uint32_t TimeHelper::getDelta(uint32_t later, uint32_t earlier)
+uint32_t chronox::getDelta(uint32_t later, uint32_t earlier)
 {
     if (later > earlier)
         return later - earlier;
@@ -109,14 +111,42 @@ uint32_t TimeHelper::getDelta(uint32_t later, uint32_t earlier)
     return 0;
 }
 
-TimeHelper::ExecutionTime::ExecutionTime()
+timespec chronox::toTimespec(uint64_t milliseconds)
 {
-    mStart = TimeHelper::getTimestamp();
+    timespec r;
+    r.tv_sec = milliseconds / 1000;
+    r.tv_nsec = milliseconds % 1000;
+    r.tv_nsec *= 1000 * 1000;
+    return r;
 }
 
-uint64_t TimeHelper::ExecutionTime::getSpentTime() const
+uint64_t chronox::toTimestamp(const timeval& ts)
 {
-    return TimeHelper::getTimestamp() - mStart;
+    return ts.tv_sec * 1000 + ts.tv_usec / 1000;
+}
+
+int64_t chronox::getDelta(const timespec& a, const timespec& b)
+{
+    uint64_t ms_a = a.tv_sec * 1000 + a.tv_nsec / 10000000;
+    uint64_t ms_b = b.tv_sec * 1000 + a.tv_nsec / 10000000;
+    return ms_a - ms_b;
+}
+
+int64_t chronox::getDelta(const timeval& a, const timeval& b)
+{
+    int64_t diff_seconds = a.tv_sec - b.tv_sec;
+    int64_t diff_microseconds = a.tv_usec - b.tv_usec;
+    return diff_seconds * 1000 + diff_microseconds / 1000;
+}
+
+chronox::ExecutionTime::ExecutionTime()
+{
+    mStart = chronox::getTimestamp();
+}
+
+uint64_t chronox::ExecutionTime::getSpentTime() const
+{
+    return chronox::getTimestamp() - mStart;
 }
 
 // --------------- BufferQueue -----------------

src/engine/helper/HL_Sync.h

@@ -14,6 +14,11 @@
 #include <functional>
 #include <assert.h>
 
+#if defined(TARGET_WIN)
+# include <WinSock2.h>
+# include <Windows.h>
+#endif
+
 typedef std::recursive_mutex Mutex;
 typedef std::unique_lock<std::recursive_mutex> Lock;
 
@@ -46,7 +51,7 @@ public:
   static uint64_t getCurrentId();
 };
 
-class TimeHelper
+class chronox
 {
 public:
   // Returns current timestamp in milliseconds
@@ -59,6 +64,14 @@ public:
   // Handles cases when clock is wrapped.
   static uint32_t getDelta(uint32_t later, uint32_t earlier);
 
+  // Converts number of milliseconds starting from Epoch begin to timespec.
+  static timespec toTimespec(uint64_t milliseconds);
+  static uint64_t toTimestamp(const timeval& ts);
+
+  // Returns difference between timestamps in milliseconds
+  static int64_t getDelta(const timespec& a, const timespec& b);
+  static int64_t getDelta(const timeval& a, const timeval& b);
+
   class ExecutionTime
   {
   public:

src/engine/helper/HL_ThreadPool.cpp

@@ -7,7 +7,7 @@ thread_pool::thread_pool(size_t num_of_threads, const std::string& name)
         num_of_threads = std::thread::hardware_concurrency();
 
     for(size_t idx = 0; idx < num_of_threads; idx++)
-        this->workers.push_back(std::thread(&thread_pool::run_worker, this));
+        this->workers.emplace_back(std::thread(&thread_pool::run_worker, this));
 }
 
 // Add new work item to the pool
@@ -20,6 +20,22 @@ void thread_pool::enqueue(const thread_pool::task& t)
     this->condition.notify_one();
 }
 
+void thread_pool::wait(std::chrono::milliseconds interval)
+{
+    while (size() != 0)
+        std::this_thread::sleep_for(interval);
+}
+
+size_t thread_pool::size()
+{
+    std::unique_lock l(this->queue_mutex);
+    return this->tasks.size();
+}
+
+size_t thread_pool::threads()
+{
+    return this->workers.size();
+}
 
 // the destructor joins all threads
 thread_pool::~thread_pool()

src/engine/helper/HL_ThreadPool.h

@@ -18,10 +18,13 @@ class thread_pool
 public:
     typedef std::function<void()> task;
 
-    thread_pool(size_t num_of_threads, const std::string&);
+    thread_pool(size_t num_of_threads, const std::string& thread_name);
     ~thread_pool();
 
     void enqueue(const task& task);
+    void wait(std::chrono::milliseconds interval = std::chrono::milliseconds(50));
+    size_t size();
+    size_t threads();
 
 private:
     // need to keep track of threads so we can join them
@@ -33,7 +36,7 @@ private:
     // synchronization
     std::mutex queue_mutex;
     std::condition_variable condition;
-    bool stop = false;
+    std::atomic_bool stop = false;
 
     // thread name prefix for worker threads
     std::string name;

src/engine/helper/HL_Time.cpp

@@ -1,10 +1,53 @@
 #include "HL_Time.h"
 
 #include <time.h>
-
+#include <chrono>
 /* return current time in milliseconds */
-double now_ms(void) {
+double now_ms(void)
+{
+#if defined(TARGET_WIN)
+    auto tp = std::chrono::steady_clock::now();
+    auto result = std::chrono::duration_cast<std::chrono::milliseconds>(tp.time_since_epoch()).count();
+    return result;
+#else
     struct timespec res;
     clock_gettime(CLOCK_MONOTONIC, &res);
     return 1000.0 * res.tv_sec + (double) res.tv_nsec / 1e6;
+#endif
 }
+
+int compare_timespec(const timespec& lhs, const timespec& rhs)
+{
+    if (lhs.tv_sec < rhs.tv_sec)
+        return -1;
+    if (lhs.tv_sec > rhs.tv_sec)
+        return 1;
+
+    if (lhs.tv_nsec < rhs.tv_nsec)
+        return -1;
+    if (lhs.tv_nsec > rhs.tv_nsec)
+        return 1;
+
+    return 0;
+}
+
+bool operator < (const timespec& lhs, const timespec& rhs)
+{
+    return compare_timespec(lhs, rhs) < 0;
+}
+
+bool operator == (const timespec& lhs, const timespec& rhs)
+{
+    return compare_timespec(lhs, rhs) == 0;
+}
+
+bool operator > (const timespec& lhs, const timespec& rhs)
+{
+    return compare_timespec(lhs, rhs) > 0;
+}
+
+bool is_zero(const timespec& ts)
+{
+    return !ts.tv_sec && !ts.tv_nsec;
+}
+

src/engine/helper/HL_Time.h

@@ -1,6 +1,17 @@
 #ifndef __HELPER_TIME_H
 #define __HELPER_TIME_H
 
+#include <time.h>
+
+// Return current monotonic number of milliseconds starting from some point
 extern double now_ms();
 
+// Compare the timespec.
+// Returns -1 if lhs < rhs, 1 if lhs > rhs, 0 if equal
+extern int compare_timespec(const timespec& lhs, const timespec& rhs);
+extern bool operator < (const timespec& lhs, const timespec& rhs);
+extern bool operator == (const timespec& lhs, const timespec& rhs);
+extern bool operator > (const timespec& lhs, const timespec& rhs);
+extern bool is_zero(const timespec& ts);
+
 #endif

src/engine/helper/HL_Types.cpp

@@ -0,0 +1 @@
+#include "HL_Types.h"

src/engine/helper/HL_Types.h

@@ -1,4 +1,4 @@
-/* Copyright(C) 2007-2014 VoIP objects (voipobjects.com)
+/* Copyright(C) 2007-2025 VoIP objects (voipobjects.com)
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
@@ -26,4 +26,139 @@ enum SdpDirection
   Sdp_Offer
 };
 
+
+#include <unordered_map>
+#include <utility>
+#include <stdexcept>
+#include <map>
+
+template<
+    class K, class V,
+    class HashK = std::hash<K>, class EqK = std::equal_to<K>,
+    class HashV = std::hash<V>, class EqV = std::equal_to<V>
+>
+class BiMap {
+public:
+    using key_type = K;
+    using mapped_type = V;
+
+    BiMap(const std::map<K,V>& initializers) {
+        for (const auto& item: initializers) {
+            insert(item.first, item.second);
+        }
+    }
+
+    // Insert a new (key, value) pair. Returns false if either key or value already exists.
+    bool insert(const K& k, const V& v) {
+        if (contains_key(k) || contains_value(v)) return false;
+        auto ok = forward_.emplace(k, v);
+        try {
+            auto ov = reverse_.emplace(v, k);
+            if (!ov.second) { // shouldn't happen given the guard above
+                forward_.erase(k);
+                return false;
+            }
+        } catch (...) {
+            forward_.erase(k);
+            throw;
+        }
+        return ok.second;
+    }
+
+    bool insert(K&& k, V&& v) {
+        if (contains_key(k) || contains_value(v)) return false;
+        auto ok = forward_.emplace(std::move(k), std::move(v));
+        try {
+            auto ov = reverse_.emplace(ok.first->second, ok.first->first); // use stored refs
+            if (!ov.second) {
+                forward_.erase(ok.first);
+                return false;
+            }
+        } catch (...) {
+            forward_.erase(ok.first);
+            throw;
+        }
+        return ok.second;
+    }
+
+    // Replace value for existing key (and update reverse map). Returns false if value is already bound elsewhere.
+    bool replace_by_key(const K& k, const V& new_v) {
+        auto it = forward_.find(k);
+        if (it == forward_.end()) return false;
+        if (contains_value(new_v)) return false;
+        // remove old reverse, insert new reverse, then update forward
+        reverse_.erase(it->second);
+        reverse_.emplace(new_v, k);
+        it->second = new_v;
+        return true;
+    }
+
+    // Replace key for existing value (and update forward map). Returns false if key is already bound elsewhere.
+    bool replace_by_value(const V& v, const K& new_k) {
+        auto it = reverse_.find(v);
+        if (it == reverse_.end()) return false;
+        if (contains_key(new_k)) return false;
+        forward_.erase(it->second);
+        forward_.emplace(new_k, v);
+        it->second = new_k;
+        return true;
+    }
+
+    // Erase by key/value. Return number erased (0 or 1).
+    size_t erase_key(const K& k) {
+        auto it = forward_.find(k);
+        if (it == forward_.end()) return 0;
+        reverse_.erase(it->second);
+        forward_.erase(it);
+        return 1;
+    }
+
+    size_t erase_value(const V& v) {
+        auto it = reverse_.find(v);
+        if (it == reverse_.end()) return 0;
+        forward_.erase(it->second);
+        reverse_.erase(it);
+        return 1;
+    }
+
+    // Lookup
+    bool contains_key(const K& k) const { return forward_.find(k) != forward_.end(); }
+    bool contains_value(const V& v) const { return reverse_.find(v) != reverse_.end(); }
+
+    const V* find_by_key(const K& k) const {
+        auto it = forward_.find(k);
+        return (it == forward_.end()) ? nullptr : &it->second;
+    }
+    const K* find_by_value(const V& v) const {
+        auto it = reverse_.find(v);
+        return (it == reverse_.end()) ? nullptr : &it->second;
+    }
+
+    // at() variants throw std::out_of_range on missing entries
+    const V& at_key(const K& k) const { return forward_.at(k); }
+    const K& at_value(const V& v) const { return reverse_.at(v); }
+
+    void clear() noexcept {
+        forward_.clear();
+        reverse_.clear();
+    }
+
+    bool empty() const noexcept { return forward_.empty(); }
+    size_t size() const noexcept { return forward_.size(); }
+
+    // Reserve buckets for performance (optional)
+    void reserve(size_t n) {
+        forward_.reserve(n);
+        reverse_.reserve(n);
+    }
+
+private:
+    std::unordered_map<K, V, HashK, EqK> forward_;
+    std::unordered_map<V, K, HashV, EqV> reverse_;
+};
+
+#include <chrono>
+typedef std::chrono::steady_clock::time_point timepoint_t;
+typedef std::chrono::steady_clock             monoclock_t;
+
 #endif

src/engine/helper/HL_Uuid.cpp

@@ -1,77 +1,57 @@
 #include "HL_Uuid.h"
 #include <memory.h>
+#include <random>
+#include <span>
+
+#if defined(TARGET_LINUX)
+#define UUID_SYSTEM_GENERATOR
+#endif
+
+#include "uuid.h"
 
 Uuid::Uuid()
 {
-#if defined(TARGET_WIN) || defined(TARGET_LINUX) || defined(TARGET_OSX)
     memset(&mUuid, 0, sizeof mUuid);
-#endif
 }
 
 Uuid Uuid::generateOne()
 {
     Uuid result;
-#if !defined(USE_NULL_UUID)
+// #if defined(TARGET_LINUX)
-#if defined(TARGET_LINUX) || defined(TARGET_OSX)
+//     auto id = uuids::uuid_system_generator{}();
-    uuid_generate(result.mUuid);
+// #else
-#endif
+    std::random_device rd;
-#if defined(TARGET_WIN)
+    auto seed_data = std::array<int, std::mt19937::state_size> {};
-    UuidCreate(&result.mUuid);
+    std::generate(std::begin(seed_data), std::end(seed_data), std::ref(rd));
-#endif
+    std::seed_seq seq(std::begin(seed_data), std::end(seed_data));
-#endif
+    std::mt19937 generator(seq);
+    uuids::uuid_random_generator gen{generator};
+
+    auto id = gen();
+// #endif
+    memcpy(result.mUuid, id.as_bytes().data(), id.as_bytes().size_bytes());
     return result;
 }
 
 Uuid Uuid::parse(const std::string &s)
 {
     Uuid result;
-#if !defined(USE_NULL_UUID)
+    auto id = uuids::uuid::from_string(s);
-#if defined(TARGET_LINUX) || defined(TARGET_OSX)
+    if (id)
-    uuid_parse(s.c_str(), result.mUuid);
+        memcpy(result.mUuid, id->as_bytes().data(), id->as_bytes().size_bytes());
-#endif
 
-#if defined(TARGET_WIN)
-    UuidFromStringA((RPC_CSTR)s.c_str(), &result.mUuid);
-#endif
-#endif
     return result;
 }
 
 std::string Uuid::toString() const
 {
-#if defined(USE_NULL_UUID)
+    auto s = std::span<uuids::uuid::value_type, 16>{(uuids::uuid::value_type*)mUuid, 16};
-    return "UUID_disabled";
+    uuids::uuid id(s);
-#else
+    return uuids::to_string(id);
-    char buf[64];
-
-#if defined(TARGET_LINUX) || defined(TARGET_OSX)
-    uuid_unparse_lower(mUuid, buf);
-#endif
-
-#if defined(TARGET_WIN)
-    RPC_CSTR s = nullptr;
-    UuidToStringA(&mUuid, &s);
-    if (s)
-    {
-        strcpy(buf, (const char*)s);
-        RpcStringFreeA(&s);
-        s = nullptr;
-    }
-#endif
-
-    return buf;
-#endif
 }
 
 bool Uuid::operator < (const Uuid& right) const
 {
-#if defined(TARGET_LINUX) || defined(TARGET_OSX)
     return memcmp(mUuid, right.mUuid, sizeof(mUuid)) < 0;
-#endif
-
-#if defined(TARGET_WIN)
-    return memcmp(&mUuid, &right.mUuid, sizeof(mUuid)) < 0;
-#endif
-
     return false;
 }

src/engine/helper/HL_Uuid.h

@@ -2,14 +2,7 @@
 #define __HL_UUID_H
 
 #include <string>
-
+#include <stdint.h>
-#if (defined(TARGET_LINUX) || defined(TARGET_OSX)) && !defined(USE_NULL_UUID)
-// Please do not forget "sudo apt install uuid-dev" on Ubuntu
-# include <uuid/uuid.h>
-#endif
-#if defined(TARGET_WIN)
-# include <rpc.h>
-#endif
 
 class Uuid
 {
@@ -21,20 +14,7 @@ public:
     bool operator < (const Uuid& right) const;
 
 protected:
-#if defined(USE_NULL_UUID)
+    uint8_t mUuid[16];
-  unsigned char mUuid[16];
-#else
-
-#if defined(TARGET_LINUX) || defined(TARGET_OSX)
-  uuid_t mUuid;
-#endif
-#if defined(TARGET_WIN)
-  UUID mUuid;
-#endif
-#if defined(TARGET_ANDROID)
-  // Stub only
-#endif
-#endif
 };
 
 

src/engine/media/CMakeLists.txt

@@ -1,12 +1,15 @@
 project (media_lib)
 
-# Rely on C++ 11
+if (NOT DEFINED LIB_PLATFORM)
-set (CMAKE_CXX_STANDARD 11)
+    message(FATAL_ERROR media_lib project requires LIB_PLATFORM to be set - it uses libraries from that directory)
+endif()
+
+# Rely on C++ 20
+set (CMAKE_CXX_STANDARD 20)
 set (CMAKE_CXX_STANDARD_REQUIRED ON)
 
 # Produce PIC code always
 set (CMAKE_POSITION_INDEPENDENT_CODE ON)
-option (USE_RESIP_INTEGRATION "Use some resiprocate specific routines" OFF)
 
 set (SOURCES
     MT_Statistics.cpp
@@ -23,6 +26,8 @@ set (SOURCES
     MT_AudioReceiver.cpp
     MT_AudioCodec.cpp
     MT_CngHelper.cpp
+    MT_AmrCodec.cpp
+    MT_EvsCodec.cpp
 
     MT_Statistics.h
     MT_WebRtc.h
@@ -38,48 +43,48 @@ set (SOURCES
     MT_AudioReceiver.h
     MT_AudioCodec.h
     MT_CngHelper.h
+    MT_AmrCodec.h
+    MT_EvsCodec.h
     )
 
-if (USE_AMR_CODEC)
+add_library(media_lib ${SOURCES})
-    message("Media: AMR NB and WB codecs will be included.")
-    add_definitions(-DUSE_AMR_CODEC)
-    set (SOURCES ${SOURCES} MT_AmrCodec.cpp MT_AmrCodec.h)
 set (LIBS_CODEC)
+
+if (USE_AMR_CODEC)
+    include (${LIB_PLATFORM}/platform_libs.cmake)
+    message("Media: AMR NB and WB codecs will be included.")
+    target_compile_definitions(media_lib PUBLIC USE_AMR_CODEC)
+    list (APPEND LIBS_CODEC ${OPENCORE_AMRNB} ${OPENCORE_AMRWB})
 endif()
 
 if (USE_EVS_CODEC)
     message("Media: EVS codec will be included.")
-    add_definitions (-DUSE_EVS_CODEC)
+    target_compile_definitions (media_lib PUBLIC USE_EVS_CODEC)
-    set (SOURCES ${SOURCES} MT_EvsCodec.cpp MT_EvsCodec.h)
+    list (APPEND LIBS_CODEC evs_codec)
-    set (LIBS_CODEC evs_codec)
 endif()
 
 if (USE_OPUS_CODEC)
     message("Media: Opus codec will be included.")
-    add_definitions(-DUSE_OPUS_CODEC)
+    target_compile_definitions(media_lib PUBLIC USE_OPUS_CODEC)
+    list (APPEND LIBS_CODEC opus)
 endif()
 
-
+if(CMAKE_SYSTEM MATCHES "Linux*" OR CMAKE_SYSTEM MATCHES "Darwin*")
-if(CMAKE_SYSTEM MATCHES "Linux*")
+    target_compile_definitions(media_lib PUBLIC HAVE_NETINET_IN_H)
-    add_definitions(-DHAVE_NETINET_IN_H)
 endif()
 
-if(CMAKE_SYSTEM MATCHES "Darwin*")
-    # OS X Specific flags
-    add_definitions(-DHAVE_NETINET_IN_H)
-endif()
 
 if (CMAKE_SYSTEM MATCHES "Windows*")
     # Windows Specific flags - MSVC expected
-    add_definitions(
+    target_compile_definitions(media_lib PRIVATE
-        -D_CRT_SECURE_NO_WARNINGS
+        _CRT_SECURE_NO_WARNINGS
-        -DHAVE_WINSOCK2_H
+        HAVE_WINSOCK2_H
-        -D_SILENCE_STDEXT_HASH_DEPRECATION_WARNINGS
+        _SILENCE_STDEXT_HASH_DEPRECATION_WARNINGS
-        -DUNICODE
+        UNICODE
-        -D_UNICODE )
+        _UNICODE )
 endif()
 
-add_library(media_lib ${SOURCES})
+
 
 # Dependency on ice_stack - Linux build requires it
 # Codec libraries as well
@@ -94,9 +99,9 @@ target_include_directories(media_lib
             ${CMAKE_CURRENT_SOURCE_DIR}/../../libs/srtp/include
             ${CMAKE_CURRENT_SOURCE_DIR}/../../libs/srtp/crypto/include
             ${CMAKE_CURRENT_SOURCE_DIR}/../../libs/webrtc
-            ${CMAKE_CURRENT_SOURCE_DIR}/../../libs/opus/include/
             ${CMAKE_CURRENT_SOURCE_DIR}/../../libs/resiprocate/
-            ${CMAKE_CURRENT_SOURCE_DIR}/../../libs/libevs/
+            ${CMAKE_CURRENT_SOURCE_DIR}/../../libs/libevs
+            ${LIB_PLATFORM}/opus/include
             )
 
 target_include_directories(media_lib
@@ -107,8 +112,4 @@ target_include_directories(media_lib
             ${CMAKE_CURRENT_SOURCE_DIR}/../../libs/libevs/basic_math
 )
 
-if (USE_RESIP_INTEGRATION)
-    message("USE_RESIP_INTEGRATION is turned on!")
-    target_compile_definitions(media_lib PUBLIC -DUSE_RESIP_INTEGRATION)
-endif()
 

src/engine/media/MT_AmrCodec.cpp

@@ -5,85 +5,30 @@
 #include "../helper/HL_ByteBuffer.h"
 #include "../helper/HL_Log.h"
 #include "../helper/HL_IuUP.h"
+#include "../helper/HL_Exception.h"
+
+#include <iostream>
 
 #define LOG_SUBSYSTEM "AmrCodec"
 using namespace MT;
 
 
-static const uint8_t amr_block_size[16]={ 13, 14, 16, 18, 20, 21, 27, 32,
+// Constant of AMR-NB frame lengths in bytes.
-                                          6 , 0 , 0 , 0 , 0 , 0 , 0 , 1  };
+const uint8_t amrnb_framelen[9] =
+    {12,  13,  15,  17,  19,  20,  26,  31,  5};
 
-
-/**
- * Constant of AMR-NB frame lengths in bytes.
- */
-const uint8_t amrnb_framelen[16] =
-{12, 13, 15, 17, 19, 20, 26, 31, 5, 0, 0, 0, 0, 0, 0, 0};
-
-/**
- * Constant of AMR-NB frame lengths in bits.
- */
 const uint16_t amrnb_framelenbits[9] =
     {95, 103, 118, 134, 148, 159, 204, 244, 39};
 
-/**
- * Constant of AMR-NB bitrates.
- */
-const uint16_t amrnb_bitrates[8] =
-{4750, 5150, 5900, 6700, 7400, 7950, 10200, 12200};
 
-/**
+// Constant of AMR-WB frame lengths in bytes.
- * Constant of AMR-WB frame lengths in bytes.
+const uint8_t  amrwb_framelen[10] =
- */
+    {17,   23,  32,  37,  40,  46,  50,  58,  60,  5 /* SID packet */};
-const uint8_t  amrwb_framelen[16] =
-{17, 23, 32, 37, 40, 46, 50, 58, 60, 5, 0, 0, 0, 0, 0, 0};
-
-/**
- * Constant of AMR-WB frame lengths in bits.
- */
 const uint16_t amrwb_framelenbits[10] =
-{132, 177, 253, 285, 317, 365, 397, 461, 477, 40};
+    {132, 177, 253, 285, 317, 365, 397, 461, 477, 40 /* SID packet */};
-
-/**
- * Constant of AMR-WB bitrates.
- */
-const uint16_t amrwb_bitrates[9] =
-{6600, 8850, 12650, 14250, 15850, 18250, 19850, 23050, 23850};
-
 
 // Helper routines
 
-/*static int8_t bitrateToMode(uint16_t bitrate)
-{
-  int8_t mode = -1;
-
-  switch (bitrate)
-  {
-  // AMR NB
-  case 4750:    mode = 0; break;
-  case 5150:    mode = 1; break;
-  case 5900:    mode = 2; break;
-  case 6700:    mode = 3; break;
-  case 7400:    mode = 4; break;
-  case 7950:    mode = 5; break;
-  case 10200:   mode = 6; break;
-  case 12200:   mode = 7; break;
-
-  // AMRWB
-  case 6600:    mode = 0; break;
-  case 8850:    mode = 1; break;
-  case 12650:   mode = 2; break;
-  case 14250:   mode = 3; break;
-  case 15850:   mode = 4; break;
-  case 18250:   mode = 5; break;
-  case 19850:   mode = 6; break;
-  case 23050:   mode = 7; break;
-  case 23850:   mode = 8; break;
-  }
-
-  return mode;
-}*/
-
 struct AmrPayloadInfo
 {
     const uint8_t*  mPayload;
@@ -119,12 +64,13 @@ struct AmrPayload
 static AmrPayload parseAmrPayload(AmrPayloadInfo& input)
 {
     AmrPayload result;
+
     // Do not skip packet by default; I suppose packet is good enough by default.
     result.mDiscardPacket = false;
 
     // Wrap incoming data with ByteArray to make bit dequeuing easy
-    ByteBuffer dataIn(input.mPayload, static_cast<size_t>(input.mPayloadLength));
+    ByteBuffer byte_reader(input.mPayload, static_cast<size_t>(input.mPayloadLength));
-    BitReader br(input.mPayload, static_cast<size_t>(input.mPayloadLength));
+    BitReader  bit_reader (input.mPayload, static_cast<size_t>(input.mPayloadLength));
 
     // In bandwidth-efficient mode, the payload header simply consists of a
     //   4-bit codec mode request:
@@ -135,16 +81,15 @@ static AmrPayload parseAmrPayload(AmrPayloadInfo& input)
     //      AMR, as defined in Table 1a in [2], or 0-8 for AMR-WB, as defined
     //      in Table 1a in [4].  CMR value 15 indicates that no mode request
     //      is present, and other values are for future use.
-    result.mCodeModeRequest = static_cast<uint8_t>(br.readBits(4));
+    result.mCodeModeRequest = static_cast<uint8_t>(bit_reader.readBits(4));
-    //ICELogMedia(<< "CMR: " << result.mCodeModeRequest);
 
     // Consume extra 4 bits for octet aligned profile
     if (input.mOctetAligned)
-        br.readBits(4);
+        bit_reader.readBits(4);
 
     // Skip interleaving flags for now for octet aligned mode
     if (input.mInterleaving && input.mOctetAligned)
-        br.readBits(8);
+        bit_reader.readBits(8);
 
     // Silence codec mode constant (it differs for wideband and narrowband codecs)
     uint8_t SID_FT = input.mWideband ? 9 : 8;
@@ -158,105 +103,121 @@ static AmrPayload parseAmrPayload(AmrPayloadInfo& input)
         //    F (1 bit): If set to 1, indicates that this frame is followed by
         // another speech frame in this payload; if set to 0, indicates that
         // this frame is the last frame in this payload.
-        F = br.readBit();
+        F = bit_reader.readBit();
 
         //    FT (4 bits): Frame type index, indicating either the AMR or AMR-WB
         // speech coding mode or comfort noise (SID) mode of the
         // corresponding frame carried in this payload.
-        FT = static_cast<uint8_t>(br.readBits(4));
+        FT = static_cast<uint8_t>(bit_reader.readBits(4));
 
         //   Q (1 bit): Frame quality indicator.  If set to 0, indicates the
         // corresponding frame is severely damaged, and the receiver should
         // set the RX_TYPE (see [6]) to either SPEECH_BAD or SID_BAD
         // depending on the frame type (FT).
-        Q = br.readBit();
+        Q = bit_reader.readBit();
+
+        // Handle padding for octet alignment
+        if (input.mOctetAligned)
+            bit_reader.readBits(2);
+
+        AmrFrame frame;
+        frame.mFrameType = FT;
+        frame.mSTI = 0;
+        frame.mMode = FT < SID_FT ? FT : 0xFF;
+        frame.mGoodQuality = Q == 1;
+        frame.mTimestamp = input.mCurrentTimestamp;
+        result.mFrames.push_back(frame);
+        input.mCurrentTimestamp += input.mWideband ? 320 : 160;
+    }
+    while (F != 0);
+
+    for (size_t frameIndex=0; frameIndex < result.mFrames.size() && !result.mDiscardPacket; frameIndex++)
+    {
+        AmrFrame& f = result.mFrames[frameIndex];
 
         // If receiving a ToC entry with a FT value in the range 9-14 for AMR or
         //   10-13 for AMR-WB, the whole packet SHOULD be discarded.  This is to
         //   avoid the loss of data synchronization in the depacketization
         //   process, which can result in a huge degradation in speech quality.
-        if ((input.mWideband && (FT >= 10 && FT <= 13)) ||
+        bool discard = input.mWideband ? (f.mFrameType >= 10 && f.mFrameType <= 13) : (f.mFrameType >= 9 && f.mFrameType <= 14);
-            (!input.mWideband && (FT >= 9 && FT <= 14)))
+        // discard |= input.mWideband ? f.mFrameType >= 14 : f.mFrameType >= 15;
+        if (discard)
         {
-            ICELogMedia(<< "Discard corrupted packet");
-            // Discard bad packet
             result.mDiscardPacket = true;
-            return result;
+            continue;
         }
 
-        // Handle padding for octet alignment
+        if (input.mWideband && f.mFrameType == 15)
-        if (input.mOctetAligned)
-            br.readBits(2);
-
-        AmrFrame frame;
-        frame.mFrameType = FT;
-
-        frame.mMode = FT < SID_FT ? FT : 0xFF;
-        frame.mGoodQuality = Q == 1;
-        frame.mTimestamp = input.mCurrentTimestamp;
-
-        result.mFrames.push_back(frame);
-
-        input.mCurrentTimestamp += input.mWideband ? 320 : 160;
-    }
-    while (F != 0);
-
-    for (size_t frameIndex=0; frameIndex < result.mFrames.size(); frameIndex++)
         {
-        AmrFrame& frame = result.mFrames[frameIndex];
+            // DTX, no sense to decode the data
-        size_t bitsLength = input.mWideband ? amrwb_framelenbits[frame.mFrameType] : amrnb_framelenbits[frame.mFrameType];
+            continue;
-        size_t byteLength = input.mWideband ? amrwb_framelen[frame.mFrameType] : amrnb_framelen[frame.mFrameType];
+        }
-        ICELogMedia(<< "New AMR speech frame: frame type = " << FT <<
+
-                    ", mode = " << frame.mMode <<
+        if (input.mWideband && f.mFrameType == 14)
-                    ", timestamp = " << static_cast<int>(frame.mTimestamp) <<
+        {
-                    ", bits length = " << static_cast<int>(bitsLength) <<
+            // Speech lost code only
-                    ", byte length =" << static_cast<int>(byteLength) <<
+            continue;
-                    ", remaining packet length = " << static_cast<int>(dataIn.size()));
+        }
+
+        if (!f.mGoodQuality)
+        {
+            // Bad quality, frame is damaged
+            continue;
+        }
+
+        size_t bitsLength = input.mWideband ? amrwb_framelenbits[f.mFrameType] : amrnb_framelenbits[f.mFrameType];
+        size_t byteLength = input.mWideband ? amrwb_framelen[f.mFrameType] : amrnb_framelen[f.mFrameType];
 
         if (bitsLength > 0)
         {
             if (input.mOctetAligned)
             {
-                if (dataIn.size() < byteLength)
+                if (byte_reader.size() < byteLength)
-                    frame.mGoodQuality = false;
+                    f.mGoodQuality = false;
                 else
                 {
                     // It is octet aligned scheme, so we are on byte boundary now
-                    size_t byteOffset = br.count() / 8;
+                    size_t byteOffset = bit_reader.position() / 8;
 
                     // Copy data of AMR frame
-                    frame.mData = std::make_shared<ByteBuffer>(input.mPayload + byteOffset, byteLength);
+                    if (byteOffset + byteLength <= input.mPayloadLength)
+                    {
+                        f.mData = std::make_shared<ByteBuffer>();
+                        f.mData->resize(byteLength + 1); // payload + header
+                        memcpy(f.mData->mutableData() + 1, input.mPayload + byteOffset, byteLength);
+
+                        // Add header for decoder
+                        f.mData->mutableData()[0] = (f.mFrameType << 3) | (1 << 2);
+                    }
+                    else
+                    {
+                        ICELogError(<< "Problem parsing AMR header: octet-aligned is set, available " << int(input.mPayloadLength - byteOffset)
+                                    << " bytes but requested " << (int)byteLength);
+                        result.mDiscardPacket = true;
+                        continue;
+                    }
                 }
             }
             else
             {
                 // Allocate place for copying
-                frame.mData = std::make_shared<ByteBuffer>();
+                f.mData = std::make_shared<ByteBuffer>();
-                frame.mData->resize(bitsLength / 8 + ((bitsLength % 8) ? 1 : 0) + 1);
+                f.mData->resize(bitsLength / 8 + ((bitsLength % 8) ? 1 : 0) + 1);
 
                 // Add header for decoder
-                frame.mData->mutableData()[0] = (frame.mFrameType << 3) | (1 << 2);
+                f.mData->mutableData()[0] = (f.mFrameType << 3) | (1 << 2);
 
                 // Read bits
-                if (br.readBits(frame.mData->mutableData() + 1, bitsLength /*+ bitsLength*/ ) < (size_t)bitsLength)
+                if (bit_reader.readBits(f.mData->mutableData() + 1, bitsLength /*+ bitsLength*/ ) < (size_t)bitsLength)
-                    frame.mGoodQuality = false;
+                    f.mGoodQuality = false;
             }
         }
     }
+
     // Padding bits are skipped
-
-    /*if (br.count() / 8 != br.position() / 8 &&
-            br.count() / 8 != br.position() / 8 + 1)
-        throw std::runtime_error("Failed to parse AMR frame");*/
-
     return result;
 }
 
-/*static void predecodeAmrFrame(AmrFrame& frame, ByteBuffer& data)
-{
-  // Data are already moved into
-}*/
-
 AmrNbCodec::CodecFactory::CodecFactory(const AmrCodecConfig& config)
     :mConfig(config)
 {
@@ -278,12 +239,9 @@ int AmrNbCodec::CodecFactory::payloadType()
     return mConfig.mPayloadType;
 }
 
-#ifdef USE_RESIP_INTEGRATION
 
 void AmrNbCodec::CodecFactory::updateSdp(resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction)
-{
+{}
-
-}
 
 int AmrNbCodec::CodecFactory::processSdp(const resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction)
 {
@@ -295,7 +253,6 @@ void AmrNbCodec::CodecFactory::create(CodecMap& codecs)
     codecs[payloadType()] = std::shared_ptr<Codec>(new AmrNbCodec(mConfig));
 }
 
-#endif
 PCodec AmrNbCodec::CodecFactory::create()
 {
     return PCodec(new AmrNbCodec(mConfig));
@@ -378,6 +335,9 @@ int AmrNbCodec::encode(const void* input, int inputBytes, void* output, int outp
 #define AMR_BITRATE_DTX 15
 int AmrNbCodec::decode(const void* input, int inputBytes, void* output, int outputCapacity)
 {
+    if (mConfig.mOctetAligned)
+        return 0;
+
     if (mConfig.mIuUP)
     {
         // Try to parse IuUP frame
@@ -485,7 +445,7 @@ int AmrNbCodec::plc(int lostFrames, void* output, int outputCapacity)
 
     for (int i=0; i < lostFrames; i++)
     {
-        unsigned char buffer[32];
+        uint8_t buffer[32];
         buffer[0] = (AMR_BITRATE_DTX << 3)|4;
         Decoder_Interface_Decode(mDecoderCtx, buffer, dataOut, 0); // Handle missing data
         dataOut += L_FRAME;
@@ -519,12 +479,8 @@ int AmrWbCodec::CodecFactory::payloadType()
     return mConfig.mPayloadType;
 }
 
-#ifdef USE_RESIP_INTEGRATION
-
 void AmrWbCodec::CodecFactory::updateSdp(resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction)
-{
+{}
-
-}
 
 int AmrWbCodec::CodecFactory::processSdp(const resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction)
 {
@@ -536,19 +492,17 @@ void AmrWbCodec::CodecFactory::create(CodecMap& codecs)
     codecs[payloadType()] = std::shared_ptr<Codec>(new AmrWbCodec(mConfig));
 }
 
-#endif
-
 PCodec AmrWbCodec::CodecFactory::create()
 {
     return PCodec(new AmrWbCodec(mConfig));
 }
 
+AmrWbStatistics MT::GAmrWbStatistics;
 
 AmrWbCodec::AmrWbCodec(const AmrCodecConfig& config)
     :mEncoderCtx(nullptr), mDecoderCtx(nullptr), mConfig(config),
       mSwitchCounter(0), mPreviousPacketLength(0)
 {
-    //mEncoderCtx = E_IF_init();
     mDecoderCtx = D_IF_init();
     mCurrentDecoderTimestamp = 0;
 }
@@ -595,36 +549,16 @@ int AmrWbCodec::samplerate()
 
 int AmrWbCodec::encode(const void* input, int inputBytes, void* output, int outputCapacity)
 {
-    if (inputBytes % pcmLength())
+    throw Exception(ERR_NOT_IMPLEMENTED);
-        return 0;
-
-    // Declare the data input pointer
-    // const short *dataIn = (const short *)input;
-
-    // Declare the data output pointer
-    // unsigned char *dataOut = (unsigned char *)output;
-
-    // Find how much RTP frames will be generated
-    unsigned int frames = inputBytes / pcmLength();
-
-    // Generate frames
-    for (unsigned int i = 0; i < frames; i++)
-    {
-        //  dataOut += Encoder_Interface_Encode(mEncoderCtx, Mode::MRDTX, dataIn, dataOut, 1);
-        //  dataIn += pcmLength() / 2;
-    }
-
-    return frames * rtpLength();
 }
 
 #define L_FRAME 160
 #define AMR_BITRATE_DTX 15
-int AmrWbCodec::decode(const void* input, int inputBytes, void* output, int outputCapacity)
+
-{
+int AmrWbCodec::decodeIuup(std::span<const uint8_t> input, std::span<uint8_t> output)
-    if (mConfig.mIuUP)
 {
     IuUP::Frame frame;
-        if (!IuUP::parse2((const uint8_t*)input, inputBytes, frame))
+    if (!IuUP::parse2(input.data(), input.size(), frame))
         return 0;
 
     if (!frame.mHeaderCrcOk || !frame.mPayloadCrcOk)
@@ -633,9 +567,6 @@ int AmrWbCodec::decode(const void* input, int inputBytes, void* output, int outp
         return 0;
     }
 
-        // Build first byte to help decoder
-        //ICELogDebug(<< "Decoding AMR frame length = " << frame.mPayloadSize);
-
     // Reserve space
     ByteBuffer dataToDecode;
     dataToDecode.resize(1 + frame.mPayloadSize);
@@ -652,16 +583,17 @@ int AmrWbCodec::decode(const void* input, int inputBytes, void* output, int outp
 
     dataToDecode.mutableData()[0] = (frameType << 3) | (1 << 2);
 
-        D_IF_decode(mDecoderCtx, (const unsigned char*)dataToDecode.data(), (short*)output, 0);
+    D_IF_decode(mDecoderCtx, (const unsigned char*)dataToDecode.data(), (short*)output.data(), 0);
     return pcmLength();
 }
-    else
+
+int AmrWbCodec::decodePlain(std::span<const uint8_t> input, std::span<uint8_t> output)
 {
     AmrPayloadInfo info;
     info.mCurrentTimestamp = mCurrentDecoderTimestamp;
     info.mOctetAligned = mConfig.mOctetAligned;
-        info.mPayload = (const uint8_t*)input;
+    info.mPayload = input.data();
-        info.mPayloadLength = inputBytes;
+    info.mPayloadLength = input.size();
     info.mWideband = true;
     info.mInterleaving = false;
 
@@ -672,6 +604,7 @@ int AmrWbCodec::decode(const void* input, int inputBytes, void* output, int outp
     }
     catch(...)
     {
+        GAmrWbStatistics.mNonParsed++;
         ICELogDebug(<< "Failed to decode AMR payload");
         return 0;
     }
@@ -680,13 +613,17 @@ int AmrWbCodec::decode(const void* input, int inputBytes, void* output, int outp
 
     // Check if packet is corrupted
     if (ap.mDiscardPacket)
+    {
+        GAmrWbStatistics.mDiscarded++;
         return 0;
+    }
 
     // Check for output buffer capacity
-        if (outputCapacity < (int)ap.mFrames.size() * pcmLength())
+    if (output.size() < (int)ap.mFrames.size() * pcmLength())
         return 0;
 
-        short* dataOut = (short*)output;
+    short* dataOut = (short*)output.data();
+    size_t dataOutSizeInBytes = 0;
     for (AmrFrame& frame: ap.mFrames)
     {
         memset(dataOut, 0, static_cast<size_t>(pcmLength()));
@@ -695,11 +632,22 @@ int AmrWbCodec::decode(const void* input, int inputBytes, void* output, int outp
         {
             D_IF_decode(mDecoderCtx, (const unsigned char*)frame.mData->data(), (short*)dataOut, 0);
             dataOut += pcmLength() / 2;
+            dataOutSizeInBytes += pcmLength();
         }
     }
-        return pcmLength() * ap.mFrames.size();
+    return dataOutSizeInBytes;
 }
 
+int AmrWbCodec::decode(const void* input, int inputBytes, void* output, int outputCapacity)
+{
+    auto inputBuffer = std::span<const uint8_t>((uint8_t*)input, (size_t)inputBytes);
+    auto outputBuffer = std::span<uint8_t>((uint8_t*)output, (size_t)outputCapacity);
+
+    if (mConfig.mIuUP)
+        return decodeIuup(inputBuffer, outputBuffer);
+    else
+        return decodePlain(inputBuffer, outputBuffer);
+
     return 0;
 }
 
@@ -750,8 +698,6 @@ int GsmEfrCodec::GsmEfrFactory::payloadType()
     return mPayloadType;
 }
 
-#ifdef USE_RESIP_INTEGRATION
-
 void GsmEfrCodec::GsmEfrFactory::updateSdp(resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction)
 {
 
@@ -767,8 +713,6 @@ void GsmEfrCodec::GsmEfrFactory::create(CodecMap& codecs)
     codecs[payloadType()] = std::shared_ptr<Codec>(new GsmEfrCodec(mIuUP));
 }
 
-#endif
-
 PCodec GsmEfrCodec::GsmEfrFactory::create()
 {
     return PCodec(new GsmEfrCodec(mIuUP));

src/engine/media/MT_AmrCodec.h

@@ -1,8 +1,10 @@
 #ifndef MT_AMRCODEC_H
 #define MT_AMRCODEC_H
 
-#include "../config.h"
+#include "../engine_config.h"
 #include <map>
+#include <span>
+
 #include "MT_Codec.h"
 #include "../helper/HL_Pointer.h"
 
@@ -16,9 +18,9 @@ namespace MT
 {
 struct AmrCodecConfig
 {
-    bool mIuUP;
+    bool    mIuUP = false;
-    bool mOctetAligned;
+    bool    mOctetAligned = false;
-    int mPayloadType;
+    int     mPayloadType = -1;
 };
 
 class AmrNbCodec : public Codec
@@ -41,11 +43,10 @@ namespace MT
         int samplerate() override;
         int payloadType() override;
 
-#ifdef USE_RESIP_INTEGRATION
         void updateSdp(resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction) override;
         int processSdp(const resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction) override;
         void create(CodecMap& codecs) override;
-#endif
+
         PCodec create() override;
 
     protected:
@@ -66,6 +67,13 @@ namespace MT
     int getSwitchCounter() const;
 };
 
+struct AmrWbStatistics
+{
+    int mDiscarded = 0;
+    int mNonParsed = 0;
+};
+extern AmrWbStatistics GAmrWbStatistics;
+
 class AmrWbCodec : public Codec
 {
 protected:
@@ -76,6 +84,9 @@ namespace MT
     int mSwitchCounter;
     int mPreviousPacketLength;
 
+    int decodeIuup(std::span<const uint8_t> input, std::span<uint8_t> output);
+    int decodePlain(std::span<const uint8_t> input, std::span<uint8_t> output);
+
 public:
     class CodecFactory: public Factory
     {
@@ -86,11 +97,10 @@ namespace MT
         int samplerate() override;
         int payloadType() override;
 
-#ifdef USE_RESIP_INTEGRATION
         void updateSdp(resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction) override;
         int processSdp(const resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction) override;
         void create(CodecMap& codecs) override;
-#endif
+
         PCodec create() override;
 
     protected:
@@ -128,11 +138,10 @@ namespace MT
         int samplerate() override;
         int payloadType() override;
 
-#ifdef USE_RESIP_INTEGRATION
         void updateSdp(resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction) override;
         int processSdp(const resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction) override;
         void create(CodecMap& codecs) override;
-#endif
+
         PCodec create() override;
 
     protected:

src/engine/media/MT_AudioCodec.cpp

@@ -5,7 +5,7 @@
 
 #define NOMINMAX
 
-#include "../config.h"
+#include "../engine_config.h"
 #include "MT_AudioCodec.h"
 #include "MT_CodecList.h"
 #include "../helper/HL_Exception.h"
@@ -58,18 +58,14 @@ int G729Codec::G729Factory::payloadType()
     return 18;
 }
 
-#if defined(USE_RESIP_INTEGRATION)
 void G729Codec::G729Factory::updateSdp(resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction)
-{
+{}
-}
 
 int G729Codec::G729Factory::processSdp(const resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction)
 {
     return 0;
 }
 
-#endif
-
 PCodec G729Codec::G729Factory::create()
 {
     return std::make_shared<G729Codec>();
@@ -241,7 +237,6 @@ OpusCodec::Params::Params()
     mTargetBitrate = OPUS_TARGET_BITRATE;
 }
 
-#if defined(USE_RESIP_INTEGRATION)
 resip::Data OpusCodec::Params::toString() const
 {
     std::ostringstream oss;
@@ -324,7 +319,7 @@ void OpusCodec::Params::parse(const resip::Data &params)
             mPtime = strx::toInt(paramIter->mValue.c_str(), 20);
     }
 }
-#endif
+
 OpusCodec::OpusFactory::OpusFactory(int samplerate, int channels, int ptype)
 {
     mSamplerate = samplerate;
@@ -352,7 +347,6 @@ int OpusCodec::OpusFactory::payloadType()
     return mPType;
 }
 
-#if defined(USE_RESIP_INTEGRATION)
 void OpusCodec::OpusFactory::updateSdp(resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction)
 {
     // Put opus codec record
@@ -394,7 +388,6 @@ int OpusCodec::OpusFactory::processSdp(const resip::SdpContents::Session::Medium
     }
     return -1;
 }
-#endif
 
 PCodec OpusCodec::OpusFactory::create()
 {
@@ -407,15 +400,13 @@ PCodec OpusCodec::OpusFactory::create()
 }
 
 OpusCodec::OpusCodec(int samplerate, int channels, int ptime)
-  :mEncoderCtx(NULL), mDecoderCtx(NULL), mChannels(channels), mPTime(ptime), mSamplerate(samplerate)
+    :mEncoderCtx(nullptr), mDecoderCtx(nullptr), mChannels(channels), mPTime(ptime), mSamplerate(samplerate), mDecoderChannels(0)
 {
     int status;
-  mEncoderCtx = opus_encoder_create(48000, mChannels, OPUS_APPLICATION_VOIP, &status);
+    mEncoderCtx = opus_encoder_create(mSamplerate, mChannels, OPUS_APPLICATION_VOIP, &status);
     if (OPUS_OK != opus_encoder_ctl(mEncoderCtx, OPUS_SET_COMPLEXITY(OPUS_CODEC_COMPLEXITY)))
         ICELogError(<< "Failed to set Opus encoder complexity");
-  //if (OPUS_OK != opus_encoder_ctl(mEncoderCtx, OPUS_SET_FORCE_CHANNELS(AUDIO_CHANNELS)))
+    // Decoder creation is postponed until first packet arriving (because it may use different channel number
-  //  ICELogCritical(<<"Failed to set channel number in Opus encoder");
-  mDecoderCtx = opus_decoder_create(48000, mChannels, &status);
 }
 
 void OpusCodec::applyParams(const Params &params)
@@ -433,7 +424,7 @@ void OpusCodec::applyParams(const Params &params)
     if (OPUS_OK != (error = opus_encoder_ctl(mEncoderCtx, OPUS_SET_PACKET_LOSS_PERC(params.mExpectedPacketLoss))))
         ICELogError(<< "Failed to (un)set expected packet loss. Error " << opus_strerror(error));
 
-  mDecodeResampler.start(channels(), 48000, mSamplerate);
+    // mDecodeResampler.start(channels(), 48000, mSamplerate);
 }
 
 OpusCodec::~OpusCodec()
@@ -441,13 +432,13 @@ OpusCodec::~OpusCodec()
     if (mDecoderCtx)
     {
         opus_decoder_destroy(mDecoderCtx);
-    mDecoderCtx = NULL;
+        mDecoderCtx = nullptr;
     }
 
     if (mEncoderCtx)
     {
         opus_encoder_destroy(mEncoderCtx);
-    mEncoderCtx = NULL;
+        mEncoderCtx = nullptr;
     }
 }
 
@@ -493,42 +484,113 @@ int OpusCodec::encode(const void* input, int inputBytes, void* output, int outpu
 
 int OpusCodec::decode(const void* input, int inputBytes, void* output, int outputCapacity)
 {
+    int result = 0;
+
+    // Examine the number of channels available in incoming packet
     int nr_of_channels = opus_packet_get_nb_channels((const unsigned char *) input);
-  assert(nr_of_channels == channels());
 
-  int nr_of_frames = opus_decoder_get_nb_samples(mDecoderCtx, (const unsigned char*)input, inputBytes);
+    // Recreate decoder if needed
-  if (nr_of_frames > 0)
+    if (mDecoderChannels != nr_of_channels)
     {
-    // Send number of bytes for input and number of samples for output
+        if (mDecoderCtx)
-    int capacity = nr_of_frames * sizeof(opus_int16) * channels();
+        {
+            opus_decoder_destroy(mDecoderCtx);
+            mDecoderCtx = nullptr;
+        }
+        mDecoderChannels = nr_of_channels;
+    }
 
-    // Dangerous !
+    if (!mDecoderCtx)
-    opus_int16* buffer = (opus_int16*)alloca(capacity);
+    {
-    int decoded = opus_decode(mDecoderCtx, (const unsigned char*)input, inputBytes, (opus_int16*)buffer, capacity / (sizeof(short) * channels()), 0 /* FEC decoding is for lost packets */);
+        int status = 0;
+        mDecoderCtx = opus_decoder_create(mSamplerate, mDecoderChannels, &status);
+        if (status)
+            return 0;
+    }
+
+    int nr_of_frames = opus_decoder_get_nb_samples(mDecoderCtx, (const unsigned char *) input,
+                                                   inputBytes);
+    if (nr_of_frames <= 0)
+        return 0;
+
+    // We support stereo and mono here.
+    int buffer_capacity = nr_of_frames * sizeof(opus_int16) * nr_of_channels;
+    opus_int16 *buffer_decode = (opus_int16 *)alloca(buffer_capacity);
+    int decoded = opus_decode(mDecoderCtx,
+                              reinterpret_cast<const unsigned char *>(input), inputBytes,
+                              buffer_decode, nr_of_frames, 0);
     if (decoded < 0)
-      return 0;
-    else
     {
-      // Resample 48000 to requested samplerate
+        ICELogCritical(<< "opus_decode() returned " << decoded);
-      size_t processed = 0;
-      return mDecodeResampler.processBuffer(buffer, decoded * sizeof(short) * channels(), processed, output, outputCapacity);
-    }
-  }
-  else
         return 0;
     }
 
-int OpusCodec::plc(int lostFrames, void* output, int outputCapacity)
+    opus_int16 *buffer_stereo = nullptr;
+    int buffer_stereo_capacity = buffer_capacity * 2;
+
+    switch (nr_of_channels) {
+        case 1:
+            // Convert to stereo before
+            buffer_stereo = (opus_int16 *) alloca(buffer_stereo_capacity);
+            for (int i = 0; i < nr_of_frames; i++) {
+                buffer_stereo[i * 2 + 1] = buffer_decode[i];
+                buffer_stereo[i * 2] = buffer_decode[i];
+            }
+            assert(buffer_stereo_capacity <= outputCapacity);
+            memcpy(output, buffer_stereo, buffer_stereo_capacity);
+            result = buffer_stereo_capacity;
+            break;
+
+        case 2:
+            assert(buffer_capacity <= outputCapacity);
+            memcpy(output, buffer_decode, buffer_capacity);
+            result = buffer_capacity;
+            break;
+
+        default:
+            assert(0);
+    }
+
+    return result;
+}
+
+int OpusCodec::plc(int lostPackets, void* output, int outputCapacity)
 {
-  int nrOfSamplesInFrame = pcmLength() / (sizeof(short) * channels());
+    // Find how much frames do we need to produce and prefill it with silence
+    int frames_per_packet = (int)pcmLength() / (sizeof(opus_int16) * channels());
     memset(output, 0, outputCapacity);
 
-  int nr_of_decoded_samples = 0;
+    // Use this pointer as output
-  for (int i=0; i<lostFrames; i++)
+    opus_int16* data_output = reinterpret_cast<opus_int16*>(output);
+
+    int nr_of_decoded_frames = 0;
+
+    // Buffer for single lost frame
+    opus_int16* buffer_plc = (opus_int16*)alloca(frames_per_packet * mDecoderChannels * sizeof(opus_int16));
+    for (int i=0; i<lostPackets; i++)
     {
-    nr_of_decoded_samples += opus_decode(mDecoderCtx, nullptr, 0, (opus_int16*)output + nrOfSamplesInFrame * i, nrOfSamplesInFrame, 0);
+        nr_of_decoded_frames = opus_decode(mDecoderCtx, nullptr, 0, buffer_plc, frames_per_packet, 0);
+        assert(nr_of_decoded_frames == frames_per_packet);
+        switch (mDecoderChannels)
+        {
+            case 1:
+                // Convert mono to stereo
+                for (int i=0; i < nr_of_decoded_frames; i++)
+                {
+                    data_output[i * 2] = buffer_plc[i];
+                    data_output[i * 2 + 1] = buffer_plc[i+1];
                 }
-  return nr_of_decoded_samples ? lostFrames * pcmLength() : 0;
+                data_output += frames_per_packet * mChannels;
+                break;
+
+            case 2:
+                // Just copy data
+                memcpy(data_output, buffer_plc, frames_per_packet * sizeof(opus_int16) * mDecoderChannels);
+                data_output += frames_per_packet * mChannels;
+                break;
+        }
+    }
+    return ((char*)data_output - (char*)output) * sizeof(opus_int16);
 }
 #endif
 
@@ -652,7 +714,6 @@ PCodec IlbcCodec::IlbcFactory::create()
     return PCodec(new IlbcCodec(mPtime));
 }
 
-#if defined(USE_RESIP_INTEGRATION)
 void IlbcCodec::IlbcFactory::create(CodecMap& codecs)
 {
     codecs[mPType20ms] = PCodec(create());
@@ -714,8 +775,6 @@ int IlbcCodec::IlbcFactory::processSdp(const resip::SdpContents::Session::Medium
     return pt;
 }
 
-#endif
-
 // --- IsacCodec(s) ---
 #define ISAC_CODEC_NAME "ISAC"
 
@@ -1093,8 +1152,8 @@ int GsmCodec::plc(int lostFrames, void* output, int outputCapacity)
 
 G722Codec::G722Codec()
 {
-  mEncoder = g722_encode_init(NULL, 64000, 0);
+    mEncoder = g722_encode_init(nullptr, 64000, 0);
-  mDecoder = g722_decode_init(NULL, 64000, 0);
+    mDecoder = g722_decode_init(nullptr, 64000, 0);
 
 }
 

src/engine/media/MT_AudioCodec.h

@@ -6,7 +6,7 @@
 #ifndef __AUDIO_CODEC_H
 #define __AUDIO_CODEC_H
 
-#include "../config.h"
+#include "../engine_config.h"
 #include <map>
 #include "MT_Codec.h"
 #include "../audio/Audio_Resampler.h"
@@ -46,10 +46,9 @@ public:
         int samplerate() override;
         int payloadType() override;
 
-#if defined(USE_RESIP_INTEGRATION)
         void updateSdp(resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction) override;
         int processSdp(const resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction) override;
-#endif
+
         PCodec create() override;
     };
     G729Codec();
@@ -73,7 +72,8 @@ protected:
     OpusEncoder        *mEncoderCtx;
     OpusDecoder        *mDecoderCtx;
     int mPTime, mSamplerate, mChannels;
-    Audio::SpeexResampler mDecodeResampler;
+    // Audio::SpeexResampler mDecodeResampler;
+    int mDecoderChannels;
 public:
     struct Params
     {
@@ -81,10 +81,8 @@ public:
         int mPtime, mTargetBitrate, mExpectedPacketLoss;
 
         Params();
-#if defined(USE_RESIP_INTEGRATION)
         resip::Data toString() const;
         void parse(const resip::Data& params);
-#endif
     };
 
     class OpusFactory: public Factory
@@ -102,10 +100,8 @@ public:
         int channels() override;
         int samplerate() override;
         int payloadType() override;
-#if defined(USE_RESIP_INTEGRATION)
         void updateSdp(resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction) override;
         int processSdp(const resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction) override;
-#endif
         PCodec create() override;
     };
 
@@ -145,11 +141,9 @@ public:
         const char* name();
         int samplerate();
         int payloadType();
-#if defined(USE_RESIP_INTEGRATION)
         void updateSdp(resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction);
         int processSdp(const resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction);
         void create(CodecMap& codecs);
-#endif
         PCodec create();
     };
 

src/engine/media/MT_AudioReceiver.cpp

@@ -3,9 +3,11 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+#if defined(TARGET_WIN) && !defined(NOMINMAX)
 #  define NOMINMAX
+#endif
 
-#include "../config.h"
+#include "../engine_config.h"
 #include "MT_AudioReceiver.h"
 #include "MT_AudioCodec.h"
 #include "MT_CngHelper.h"
@@ -14,6 +16,7 @@
 #include "../audio/Audio_Interface.h"
 #include "../audio/Audio_Resampler.h"
 #include <cmath>
+#include <iostream>
 
 #if !defined(TARGET_ANDROID) && !defined(TARGET_OPENWRT) && !defined(TARGET_WIN) && !defined(TARGET_RPI) && defined(USE_AMR_CODEC)
 # include "MT_AmrCodec.h"
@@ -62,6 +65,8 @@ std::vector<short>& RtpBuffer::Packet::pcm()
 RtpBuffer::RtpBuffer(Statistics& stat)
     :mStat(stat)
 {
+    if (mStat.mPacketLoss)
+        std::cout << "Warning: packet loss is not zero" << std::endl;
 }
 
 RtpBuffer::~RtpBuffer()
@@ -117,7 +122,6 @@ std::shared_ptr<RtpBuffer::Packet> RtpBuffer::add(std::shared_ptr<jrtplib::RTPPa
 
     Lock l(mGuard);
 
-
     // Update statistics
     if (mLastAddTime == 0.0)
         mLastAddTime = now_ms();
@@ -197,13 +201,14 @@ RtpBuffer::FetchResult RtpBuffer::fetch(ResultList& rl)
     // See if there is enough information in buffer
     int total = findTimelength();
 
-    while (total > mHigh && mPacketList.size())
+    while (total > mHigh && mPacketList.size() && 0 != mHigh)
     {
         ICELogMedia( << "Dropping RTP packets from jitter buffer");
         total -= mPacketList.front()->timelength();
 
         // Save it as last packet however - to not confuse loss packet counter
         mFetchedPacket = mPacketList.front();
+        mLastSeqno = mPacketList.front()->rtp()->GetExtendedSequenceNumber();
 
         // Erase from packet list
         mPacketList.erase(mPacketList.begin());
@@ -213,47 +218,48 @@ RtpBuffer::FetchResult RtpBuffer::fetch(ResultList& rl)
     }
 
     if (total < mLow)
+    {
+        // Still not prebuffered
         result = FetchResult::NoPacket;
+    }
     else
     {
+        // Did we fetch any packet before ?
         bool is_fetched_packet = mFetchedPacket.get() != nullptr;
         if (is_fetched_packet)
             is_fetched_packet &= mFetchedPacket->rtp().get() != nullptr;
 
-        if (is_fetched_packet)
+        if (mLastSeqno.has_value())
         {
             if (mPacketList.empty())
             {
                 result = FetchResult::NoPacket;
-                mStat.mPacketLoss++;
+                // Don't increase counter of lost packets here; maybe it is DTX
             }
             else
             {
                 // Current sequence number ?
-                unsigned seqno = mPacketList.front()->rtp()->GetExtendedSequenceNumber();
+                uint32_t seqno = mPacketList.front()->rtp()->GetExtendedSequenceNumber();
 
                 // Gap between new packet and previous on
-                int gap = (int64_t)seqno - (int64_t)mFetchedPacket->rtp()->GetExtendedSequenceNumber() - 1;
+                int gap = (int64_t)seqno - (int64_t)*mLastSeqno - 1;
                 gap = std::min(gap, 127);
-                if (gap > 0 && mPacketList.empty())
+                if (gap > 0)
                 {
+                    // std::cout << "Increase the packet loss for SSRC " << std::hex << mSsrc << std::endl;
+                    mStat.mPacketLoss++;
+                    //mStat.mLoss[gap]++;
+                    mLastSeqno = *mLastSeqno + 1;
                     result = FetchResult::Gap;
-                    mStat.mPacketLoss += gap;
-                    mStat.mLoss[gap]++;
                 }
                 else
                 {
-                    if (gap > 0)
-                    {
-                        mStat.mPacketLoss += gap;
-                        mStat.mLoss[gap]++;
-                    }
-
                     result = FetchResult::RegularPacket;
                     rl.push_back(mPacketList.front());
 
                     // Save last returned normal packet
                     mFetchedPacket = mPacketList.front();
+                    mLastSeqno = mPacketList.front()->rtp()->GetExtendedSequenceNumber();
 
                     // Remove returned packet from the list
                     mPacketList.erase(mPacketList.begin());
@@ -263,7 +269,7 @@ RtpBuffer::FetchResult RtpBuffer::fetch(ResultList& rl)
         else
         {
             // See if prebuffer limit is reached
-            if (findTimelength() >= mPrebuffer)
+            if (findTimelength() >= mPrebuffer && !mPacketList.empty())
             {
                 // Normal packet will be returned
                 result = FetchResult::RegularPacket;
@@ -273,6 +279,7 @@ RtpBuffer::FetchResult RtpBuffer::fetch(ResultList& rl)
 
                 // Remember returned packet
                 mFetchedPacket = mPacketList.front();
+                mLastSeqno = mPacketList.front()->rtp()->GetExtendedSequenceNumber();
 
                 // Remove returned packet from buffer list
                 mPacketList.erase(mPacketList.begin());
@@ -331,6 +338,7 @@ AudioReceiver::AudioReceiver(const CodecList::Settings& settings, MT::Statistics
     mResampler48.start(AUDIO_CHANNELS, 48000, AUDIO_SAMPLERATE);
 
     // Init codecs
+    mCodecList.setSettings(settings);
     mCodecList.fillCodecMap(mCodecMap);
 
 #if defined(DUMP_DECODED)
@@ -355,11 +363,17 @@ void AudioReceiver::setCodecSettings(const CodecList::Settings& codecSettings)
         return;
 
     mCodecSettings = codecSettings;
-    mCodecMap.clear();
+    mCodecList.setSettings(mCodecSettings); // This builds factory list with proper payload types according to payload types in settings
-    mCodecList.setSettings(mCodecSettings);
+
+    // Rebuild codec map from factory list
     mCodecList.fillCodecMap(mCodecMap);
 }
 
+CodecList::Settings& AudioReceiver::getCodecSettings()
+{
+    return mCodecSettings;
+}
+
 size_t decode_packet(Codec& codec, RTPPacket& p, void* output_buffer, size_t output_capacity)
 {
     // How much data was produced
@@ -396,46 +410,56 @@ size_t decode_packet(Codec& codec, RTPPacket& p, void* output_buffer, size_t out
     return result;
 }
 
-bool AudioReceiver::add(const std::shared_ptr<jrtplib::RTPPacket>& p, Codec** codec)
+bool AudioReceiver::add(const std::shared_ptr<jrtplib::RTPPacket>& p, Codec** detectedCodec)
 {
+    // Estimate time length
+    int time_length = 0,
+        samplerate = 8000,
+        payloadLength = p->GetPayloadLength(),
+        ptype = p->GetPayloadType();
+
     // ICELogInfo(<< "Adding packet No " << p->GetSequenceNumber());
     // Increase codec counter
-    mStat.mCodecCount[p->GetPayloadType()]++;
+    mStat.mCodecCount[ptype]++;
 
     // Check if codec can be handled
-    CodecMap::iterator codecIter = mCodecMap.find(p->GetPayloadType());
+    Codec* codec = nullptr;
+    CodecMap::iterator codecIter = mCodecMap.find(ptype);
     if (codecIter == mCodecMap.end())
     {
-        ICELogMedia(<< "Cannot find codec in available codecs");
+        time_length = 10;
-        return false; // Reject packet with unknown payload type
     }
-
+    else
-    // Check if codec is created actually
+    {
+        // Check if codec is creating lazily
         if (!codecIter->second)
         {
-        // Look for ptype
+            codecIter->second = mCodecList.createCodecByPayloadType(ptype);
-        for (int codecIndex = 0; codecIndex < mCodecList.count(); codecIndex++)
-            if (mCodecList.codecAt(codecIndex).payloadType() == p->GetPayloadType())
-                codecIter->second = mCodecList.codecAt(codecIndex).create();
         }
+        codec = codecIter->second.get();
 
         // Return pointer to codec if needed.get()
-    if (codec)
+        if (detectedCodec)
-        *codec = codecIter->second.get();
+            *detectedCodec = codec;
 
-    if (mStat.mCodecName.empty())
+        if (mStat.mCodecName.empty() && codec)
-        mStat.mCodecName = codecIter->second->name();
+            mStat.mCodecName = codec->name();
 
-    // Estimate time length
-    int time_length = 0, payloadLength = p->GetPayloadLength(), ptype = p->GetPayloadType();
 
-    if (!codecIter->second->rtpLength())
+        if (!codec)
-        time_length = codecIter->second->frameTime();
+            time_length = 10;
         else
-        time_length = lround(double(payloadLength) / codecIter->second->rtpLength() * codecIter->second->frameTime());
+        if (!codec->rtpLength())
+            time_length = codec->frameTime();
+        else
+            time_length = lround(double(payloadLength) / codec->rtpLength() * codec->frameTime());
+
+        if (codec)
+            samplerate = codec->samplerate();
+    }
 
     // Process jitter
-    mJitterStats.process(p.get(), codecIter->second->samplerate());
+    mJitterStats.process(p.get(), samplerate);
     mStat.mJitter = static_cast<float>(mJitterStats.get());
 
     // Check if packet is CNG
@@ -447,23 +471,26 @@ bool AudioReceiver::add(const std::shared_ptr<jrtplib::RTPPacket>& p, Codec** co
     {
         // It will cause statistics to report about bad RTP packet
         // I have to replay last packet payload here to avoid report about lost packet
-            mBuffer.add(p, time_length, codecIter->second->samplerate());
+        mBuffer.add(p, time_length, samplerate);
         return false;
     }
 
     // Queue packet to buffer
-    auto packet = mBuffer.add(p, time_length, codecIter->second->samplerate()).get();
+    auto packet = mBuffer.add(p, time_length, samplerate).get();
 
     if (packet)
     {
         // Check if early decoding configured
-        if (mEarlyDecode && *codec)
+        if (mEarlyDecode && codec)
         {
             // Move data to packet buffer
-            size_t available = decode_packet(**codec, *p, mDecodedFrame, sizeof mDecodedFrame);
+            size_t available = decode_packet(*codec, *p, mDecodedFrame, sizeof mDecodedFrame);
+            if (available > 0)
+            {
                 packet->pcm().resize(available / 2);
                 memcpy(packet->pcm().data(), mDecodedFrame, available / 2);
             }
+        }
         return true;
     }
     else
@@ -513,7 +540,17 @@ AudioReceiver::DecodeResult AudioReceiver::getAudio(Audio::DataWindow& output, i
             if (options & DecodeOptions_SkipDecode)
                 mDecodedLength = 0;
             else
+            {
                 mDecodedLength = mCodec->plc(mFrameCount, mDecodedFrame, sizeof mDecodedFrame);
+                if (!mDecodedLength)
+                {
+                    // PLC is not support or failed
+                    // So substitute the silence
+                    size_t nr_of_samples = mCodec->frameTime() * mCodec->samplerate() / 1000 * sizeof(short);
+                    mDecodedLength = nr_of_samples * sizeof(short);
+                    memset(mDecodedFrame, 0, mDecodedLength);
+                }
+            }
         }
 
         if (mDecodedLength)
@@ -530,7 +567,6 @@ AudioReceiver::DecodeResult AudioReceiver::getAudio(Audio::DataWindow& output, i
 
     case RtpBuffer::FetchResult::RegularPacket:
         mFailedCount = 0;
-
         for (std::shared_ptr<RtpBuffer::Packet>& p: rl)
         {
             assert(p);
@@ -637,8 +673,7 @@ AudioReceiver::DecodeResult AudioReceiver::getAudio(Audio::DataWindow& output, i
                                     // Decode frame by frame
                                     mDecodedLength = mCodec->decode(p->rtp()->GetPayloadData() + i * mCodec->rtpLength(),
                                                                     frameLength, mDecodedFrame, sizeof mDecodedFrame);
-                                    // mDecodedLength = 3840; // Opus 20 ms stereo
+                                    if (mDecodedLength > 0)
-                                    if (mDecodedLength)
                                         processDecoded(output, options);
                                 }
                             }

src/engine/media/MT_AudioReceiver.h

@@ -1,4 +1,4 @@
-/* Copyright(C) 2007-2017 VoIPobjects (voipobjects.com)
+/* Copyright(C) 2007-2025 VoIPobjects (voipobjects.com)
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
@@ -8,22 +8,16 @@
 
 #include "MT_Stream.h"
 #include "MT_CodecList.h"
-#include "MT_AudioCodec.h"
 #include "MT_CngHelper.h"
 
-#include "../helper/HL_Pointer.h"
 #include "../helper/HL_Sync.h"
-#include "../helper/HL_Optional.hpp"
 
 #include "jrtplib/src/rtppacket.h"
-#include "jrtplib/src/rtcppacket.h"
 #include "jrtplib/src/rtpsourcedata.h"
 #include "../audio/Audio_DataWindow.h"
 #include "../audio/Audio_Resampler.h"
 
-#include <map>
+#include <optional>
-
-// #define DUMP_DECODED
 
 namespace MT
 {
@@ -101,6 +95,7 @@ namespace MT
     bool mFirstPacketWillGo = true;
     jrtplib::RTPSourceStats mRtpStats;
     std::shared_ptr<Packet> mFetchedPacket;
+    std::optional<uint32_t> mLastSeqno;
 
     // To calculate average interval between packet add. It is close to jitter but more useful in debugging.
     float mLastAddTime = 0.0;
@@ -124,7 +119,7 @@ namespace MT
     
     // Update codec settings
     void setCodecSettings(const CodecList::Settings& codecSettings);
-
+    CodecList::Settings& getCodecSettings();
     // Returns false when packet is rejected as illegal. codec parameter will show codec which will be used for decoding.
     // Lifetime of pointer to codec is limited by lifetime of AudioReceiver (it is container).
     bool add(const std::shared_ptr<jrtplib::RTPPacket>& p, Codec** codec = nullptr);

src/engine/media/MT_AudioStream.cpp

@@ -306,18 +306,22 @@ void AudioStream::dataArrived(PDatagramSocket s, const void* buffer, int length,
     int receiveLength = length;
     memcpy(mReceiveBuffer, buffer, length);
 
-    bool srtpResult;
     if (mSrtpSession.active())
     {
+        bool srtpResult;
+        size_t srcLength = length; size_t dstLength = sizeof mSrtpDecodeBuffer;
         if (RtpHelper::isRtp(mReceiveBuffer, receiveLength))
-            srtpResult = mSrtpSession.unprotectRtp(mReceiveBuffer, &receiveLength);
+            srtpResult = mSrtpSession.unprotectRtp(mReceiveBuffer, srcLength, mSrtpDecodeBuffer, &dstLength);
         else
-            srtpResult = mSrtpSession.unprotectRtcp(mReceiveBuffer, &receiveLength);
+            srtpResult = mSrtpSession.unprotectRtcp(mReceiveBuffer, srcLength, mSrtpDecodeBuffer, &dstLength);
         if (!srtpResult)
         {
             ICELogError(<<"Cannot decrypt SRTP packet.");
             return;
         }
+
+        memcpy(mReceiveBuffer, mSrtpDecodeBuffer, dstLength);
+        receiveLength = dstLength;
     }
 
     switch (source.family())
@@ -343,8 +347,8 @@ void AudioStream::dataArrived(PDatagramSocket s, const void* buffer, int length,
     mStat.mReceived += length;
     if (RtpHelper::isRtp(mReceiveBuffer, receiveLength))
     {
-        if (!mStat.mFirstRtpTime.is_initialized())
+        if (!mStat.mFirstRtpTime)
-            mStat.mFirstRtpTime = std::chrono::system_clock::now();
+            mStat.mFirstRtpTime = std::chrono::steady_clock::now();
         mStat.mReceivedRtp++;
     }
     else

src/engine/media/MT_AudioStream.h

@@ -6,7 +6,7 @@
 #ifndef __MT_AUDIOSTREAM_H
 #define __MT_AUDIOSTREAM_H
 
-#include "../config.h"
+#include "../engine_config.h"
 #include "MT_Stream.h"
 #include "MT_NativeRtpSender.h"
 #include "MT_SingleAudioStream.h"
@@ -87,7 +87,8 @@ protected:
     mCaptureResampler32,
     mCaptureResampler48;
     DtmfContext mDtmfContext;
-    char mReceiveBuffer[MAX_VALID_UDPPACKET_SIZE];
+    char mReceiveBuffer[MAX_VALID_UDPPACKET_SIZE],
+         mSrtpDecodeBuffer[MAX_VALID_UDPPACKET_SIZE];
 
     struct
     {

src/engine/media/MT_CngHelper.cpp

@@ -1,4 +1,4 @@
-#include "../config.h"
+#include "../engine_config.h"
 
 #include "MT_CngHelper.h"
 #include <stdlib.h>

src/engine/media/MT_Codec.cpp

@@ -11,8 +11,6 @@ int Codec::Factory::channels()
 {
   return 1;
 }
-
-#if defined(USE_RESIP_INTEGRATION)
 void Codec::Factory::create(CodecMap& codecs)
 {
   codecs[payloadType()] = std::shared_ptr<Codec>(create());
@@ -38,4 +36,4 @@ int Codec::Factory::processSdp(const resip::SdpContents::Session::Medium::CodecC
   }
   return -1;
 }
-#endif
+

src/engine/media/MT_Codec.h

@@ -6,9 +6,7 @@
 #ifndef __MT_CODEC_H
 #define __MT_CODEC_H
 
-#if defined(USE_RESIP_INTEGRATION)
 #include "resiprocate/resip/stack/SdpContents.hxx"
-#endif
 #include "../helper/HL_Types.h"
 #include <map>
 #include "../helper/HL_Pointer.h"
@@ -36,14 +34,12 @@ public:
         virtual PCodec create() = 0;
 
         virtual int channels();
-#if defined(USE_RESIP_INTEGRATION)
         typedef std::map<int, PCodec > CodecMap;
         virtual void create(CodecMap& codecs);
         virtual void updateSdp(resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction);
         // Returns payload type from chosen codec if success. -1 is returned for negative result.
         virtual int processSdp(const resip::SdpContents::Session::Medium::CodecContainer& codecs, SdpDirection direction);
         resip::Codec resipCodec();
-#endif
     };
     virtual ~Codec() {}
     virtual const char* name() = 0;

src/engine/media/MT_CodecList.cpp

@@ -1,11 +1,11 @@
-/* Copyright(C) 2007-2023 VoIPobjects (voipobjects.com)
+/* Copyright(C) 2007-2025 VoIPobjects (voipobjects.com)
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include <algorithm>
 #include <list>
 
-#include "../config.h"
+#include "../engine_config.h"
 #include "MT_CodecList.h"
 #include "MT_AudioCodec.h"
 
@@ -25,33 +25,95 @@ using namespace MT;
 
 using strx = strx;
 
-// ---------------- EvsSpec ---------------
+
+bool CodecList::Settings::contains(int ptype) const
+{
+    if (ptype >= 0 && ptype < 96)
+        return true;
+
+    if (mAmrNbOctetPayloadType.contains(ptype))
+        return true;
+    if (mAmrNbPayloadType.contains(ptype))
+        return true;
+    if (mAmrWbOctetPayloadType.contains(ptype))
+        return true;
+    if (mAmrWbPayloadType.contains(ptype))
+        return true;
+    for (const auto& s: mOpusSpec)
+        if (s.mPayloadType == ptype)
+            return true;
+    for (const auto& s: mEvsSpec)
+        if (s.mPayloadType == ptype)
+            return true;
+
+    if (mIsac16KPayloadType == ptype || mIsac32KPayloadType == ptype)
+        return true;
+
+    if (mIlbc20PayloadType == ptype || mIlbc30PayloadType == ptype)
+        return true;
+
+    if (mGsmEfrPayloadType == ptype || mGsmFrPayloadType == ptype || mGsmHrPayloadType == ptype)
+        return true;
+
+    return false;
+}
 
 std::string CodecList::Settings::toString() const
 {
     std::ostringstream oss;
-    oss << "wrap IuUP:    " << mWrapIuUP << std::endl
+    // oss << "wrap IuUP:    " << mWrapIuUP << std::endl
-        << "skip decode:  " << mSkipDecode << std::endl;
+    //     << "skip decode:  " << mSkipDecode << std::endl;
-    for (int ptype: mAmrWbPayloadType)
-        oss << "AMR WB ptype: " << ptype << std::endl;
-    for (int ptype: mAmrWbOctetPayloadType)
-        oss << "AMR WB octet-aligned ptype: " << ptype << std::endl;
-    for (int ptype: mAmrNbPayloadType)
-        oss << "AMR NB ptype: " << ptype << std::endl;
-    for (int ptype: mAmrNbOctetPayloadType)
-        oss << "AMR NB octet-aligned ptype:" << ptype << std::endl;
 
-    oss << "ISAC 16Khz ptype: " << mIsac16KPayloadType << std::endl
+    if (!mAmrWbPayloadType.empty())
-        << "ISAC 32Khz ptype: " << mIsac32KPayloadType << std::endl
+    {
-        << "iLBC 20ms ptype: " << mIlbc20PayloadType << std::endl
+        oss << "AMR WB ptype: ";
-        << "iLBC 30ms ptype: " << mIlbc30PayloadType << std::endl
+        for (int ptype: mAmrWbPayloadType)
-        << "GSM FR ptype: " << mGsmFrPayloadType << ", GSM FR plength: " << mGsmFrPayloadLength << std::endl
+            oss << ptype << " ";
-        << "GSM HR ptype: " << mGsmHrPayloadType << std::endl
+    }
-        << "GSM EFR ptype: " << mGsmEfrPayloadType << std::endl;
+    if (!mAmrWbOctetPayloadType.empty())
+    {
+        oss << "AMR WB octet ptype: ";
+        for (int ptype: mAmrWbOctetPayloadType)
+            oss << ptype << " ";
+    }
+
+    if (!mAmrNbPayloadType.empty())
+    {
+        oss << "AMR ptype: ";
+        for (int ptype: mAmrNbPayloadType)
+            oss << ptype << " ";
+    }
+
+    if (!mAmrNbOctetPayloadType.empty())
+    {
+        oss << "AMR octet ptype: ";
+        for (int ptype: mAmrNbOctetPayloadType)
+            oss << ptype << " ";
+    }
+    if (mIsac16KPayloadType != -1)
+        oss << "ISAC 16Khz ptype: " << mIsac16KPayloadType << " ";
+
+    if (mIsac32KPayloadType != -1)
+        oss << "ISAC 32Khz ptype: " << mIsac32KPayloadType << " ";
+
+    if (mIlbc20PayloadType != -1)
+        oss << "iLBC 20ms ptype: " << mIlbc20PayloadType << " ";
+
+    if (mIlbc30PayloadType != -1)
+        oss << "iLBC 30ms ptype: " << mIlbc30PayloadType << " ";
+
+    if (mGsmFrPayloadType != -1)
+        oss << "GSM FR ptype: " << mGsmFrPayloadType << ", GSM FR plength: " << mGsmFrPayloadLength << " ";
+
+    if (mGsmHrPayloadType != -1)
+        oss << "GSM HR ptype: " << mGsmHrPayloadType << " ";
+
+    if (mGsmEfrPayloadType != -1)
+        oss << "GSM EFR ptype: " << mGsmEfrPayloadType << " ";
 
     for (auto& spec: mEvsSpec)
     {
-        oss << "EVS ptype: " << spec.mPayloadType << ", bw: " << spec.mBandwidth << ", enc: " << (spec.mEncodingType == EvsSpec::Encoding_MIME ? "mime" : "g192") << std::endl;
+        oss << "EVS ptype: " << spec.mPayloadType << ", bw: " << spec.mBandwidth << ", enc: " << (spec.mEncodingType == EvsSpec::Encoding_MIME ? "mime" : "g192") << " ";
     }
 
     for (auto& spec: mOpusSpec)
@@ -62,6 +124,24 @@ std::string CodecList::Settings::toString() const
     return oss.str();
 }
 
+void CodecList::Settings::clear()
+{
+    // Remove all dynamic payload type assignments
+    mEvsSpec.clear();
+    mOpusSpec.clear();
+    mAmrNbOctetPayloadType.clear();
+    mAmrNbPayloadType.clear();
+    mAmrWbOctetPayloadType.clear();
+    mAmrWbPayloadType.clear();
+    mIsac16KPayloadType = -1;
+    mIsac32KPayloadType = -1;
+    mIlbc20PayloadType = -1;
+    mIlbc30PayloadType = -1;
+    mGsmEfrPayloadType = -1;
+    mGsmFrPayloadType = -1;
+    mGsmHrPayloadType = -1;
+}
+
 bool CodecList::Settings::EvsSpec::isValid() const
 {
     return mPayloadType >= 96 && mPayloadType <= 127;
@@ -71,7 +151,7 @@ CodecList::Settings::EvsSpec CodecList::Settings::EvsSpec::parse(const std::stri
 {
     EvsSpec result;
 
-    auto parts = strx::split(spec, "-/");
+    auto parts = strx::split(spec, "-/ ,:");
     if (parts.size() == 3)
     {
         // Payload type number
@@ -116,7 +196,7 @@ CodecList::Settings::OpusSpec CodecList::Settings::OpusSpec::parse(const std::st
 {
     OpusSpec result;
 
-    auto parts = strx::split(spec, "-");
+    auto parts = strx::split(spec, "-/ ,:");
     if (parts.size() == 3)
     {
         result.mPayloadType = strx::toInt(strx::trim(parts.front()).c_str(), -1);
@@ -126,7 +206,21 @@ CodecList::Settings::OpusSpec CodecList::Settings::OpusSpec::parse(const std::st
     return result;
 }
 
-#if defined(USE_RESIP_INTEGRATION)
+static int findOctetMode(const char* line)
+{
+    const char* param_name = "octet-align=";
+    auto p = strstr(line, param_name);
+    if (!p)
+        return 0;
+
+    p += strlen(param_name);
+    char int_buf[8] = {0};
+    size_t int_buf_offset = 0;
+    while (*p && isdigit(*p) && int_buf_offset < sizeof(int_buf))
+        int_buf[int_buf_offset++] = *p++;
+    return atoi(int_buf);
+}
+
 CodecList::Settings CodecList::Settings::parseSdp(const std::list<resip::Codec>& codeclist)
 {
     CodecList::Settings r{DefaultSettings};
@@ -137,20 +231,50 @@ CodecList::Settings CodecList::Settings::parseSdp(const std::list<resip::Codec>&
         int samplerate = c.getRate();
         int ptype = c.payloadType();
 
+        auto enc_params = c.encodingParameters(); // This must channels number for Opus codec
+        auto params = c.parameters();
+
         // Dynamic payload type codecs only - ISAC / iLBC / Speex / etc.
         if (codec_name == "OPUS")
         {
             // Check the parameters
-            auto enc_params = c.encodingParameters(); // This must channels number for Opus codec
-            auto params = c.parameters();
             int channels = strx::toInt(enc_params.c_str(), 1);
             r.mOpusSpec.push_back({ptype, samplerate, channels});
         }
+        else
+        if (codec_name == "AMR-WB")
+        {
+            int octet_mode = findOctetMode(params.c_str());
+            if (octet_mode != -1)
+            {
+                if (octet_mode == 0)
+                    r.mAmrWbPayloadType.insert(ptype);
+                else
+                if (octet_mode == 1)
+                    r.mAmrWbOctetPayloadType.insert(ptype);
+            }
+        }
+        else
+        if (codec_name == "AMR" || codec_name == "AMR-NB")
+        {
+            int octet_mode = findOctetMode(params.c_str());
+            if (octet_mode != -1)
+            {
+                if (octet_mode == 0)
+                    r.mAmrNbPayloadType.insert(ptype);
+                else
+                if (octet_mode == 1)
+                    r.mAmrNbOctetPayloadType.insert(ptype);
+            }
+        }
+        else
+        if (codec_name == "EVS")
+        {
+            r.mEvsSpec.push_back({ptype});
+        }
     }
     return r;
 }
-#endif
-
 
 bool CodecList::Settings::operator == (const Settings& rhs) const
 {
@@ -200,21 +324,12 @@ CodecList::CodecList(const Settings& settings)
 
 void CodecList::init(const Settings& settings)
 {
-  for (auto f: mFactoryList)
-      delete f;
     mFactoryList.clear();
-
+    mSettings = settings;
 #if defined(USE_OPUS_CODEC)
-  if (settings.mOpusSpec.empty())
-  {
-    mFactoryList.push_back(new OpusCodec::OpusFactory(48000, 2, MT_OPUS_CODEC_PT));
-  }
-  else
-  {
     for (auto spec: settings.mOpusSpec)
     {
-      mFactoryList.push_back(new OpusCodec::OpusFactory(spec.mRate, spec.mChannels, spec.mPayloadType));
+        mFactoryList.push_back(std::make_shared<OpusCodec::OpusFactory>(spec.mRate, spec.mChannels, spec.mPayloadType));
-    }
     }
 #endif
 
@@ -222,28 +337,29 @@ void CodecList::init(const Settings& settings)
 #if !defined(TARGET_ANDROID) && !defined(TARGET_OPENWRT) && !defined(TARGET_RPI)
 #if defined(USE_AMR_CODEC)
     for (int pt: mSettings.mAmrWbPayloadType)
-    mFactoryList.push_back(new AmrWbCodec::CodecFactory({mSettings.mWrapIuUP, false, pt}));
+        mFactoryList.push_back(std::make_shared<AmrWbCodec::CodecFactory>(AmrCodecConfig{mSettings.mWrapIuUP, false, pt}));
     for (int pt: mSettings.mAmrWbOctetPayloadType)
-    mFactoryList.push_back(new AmrWbCodec::CodecFactory({mSettings.mWrapIuUP, true, pt}));
+        mFactoryList.push_back(std::make_shared<AmrWbCodec::CodecFactory>(AmrCodecConfig{mSettings.mWrapIuUP, true, pt}));
 
     for (int pt: mSettings.mAmrNbPayloadType)
-    mFactoryList.push_back(new AmrNbCodec::CodecFactory({mSettings.mWrapIuUP, false, pt}));
+        mFactoryList.push_back(std::make_shared<AmrNbCodec::CodecFactory>(AmrCodecConfig{mSettings.mWrapIuUP, false, pt}));
     for (int pt: mSettings.mAmrNbOctetPayloadType)
-    mFactoryList.push_back(new AmrNbCodec::CodecFactory({mSettings.mWrapIuUP, true, pt}));
+        mFactoryList.push_back(std::make_shared<AmrNbCodec::CodecFactory>(AmrCodecConfig{mSettings.mWrapIuUP, true, pt}));
 
-  mFactoryList.push_back(new GsmEfrCodec::GsmEfrFactory(mSettings.mWrapIuUP, mSettings.mGsmEfrPayloadType));
+    if (mSettings.mGsmEfrPayloadType != -1)
+        mFactoryList.push_back(std::make_shared<GsmEfrCodec::GsmEfrFactory>(mSettings.mWrapIuUP, mSettings.mGsmEfrPayloadType));
 #endif
 #endif
-  // mFactoryList.push_back(new IsacCodec::IsacFactory16K(mSettings.mIsac16KPayloadType));
+    mFactoryList.push_back(std::make_shared<G711Codec::AlawFactory>());
-  // mFactoryList.push_back(new IlbcCodec::IlbcFactory(mSettings.mIlbc20PayloadType, mSettings.mIlbc30PayloadType));
+    mFactoryList.push_back(std::make_shared<G711Codec::UlawFactory>());
-  mFactoryList.push_back(new G711Codec::AlawFactory());
-  mFactoryList.push_back(new G711Codec::UlawFactory());
 
-  mFactoryList.push_back(new GsmCodec::GsmFactory(mSettings.mGsmFrPayloadLength == 32 ? GsmCodec::Type::Bytes_32 : GsmCodec::Type::Bytes_33, mSettings.mGsmFrPayloadType));
+    if (mSettings.mGsmFrPayloadType != -1)
-  // mFactoryList.push_back(new G722Codec::G722Factory());
+        mFactoryList.push_back(std::make_shared<GsmCodec::GsmFactory>(mSettings.mGsmFrPayloadLength == 32 ? GsmCodec::Type::Bytes_32 : GsmCodec::Type::Bytes_33, mSettings.mGsmFrPayloadType));
-  // mFactoryList.push_back(new G729Codec::G729Factory());
+    mFactoryList.push_back(std::make_shared<G722Codec::G722Factory>());
+    mFactoryList.push_back(std::make_shared<G729Codec::G729Factory>());
 #ifndef TARGET_ANDROID
-  mFactoryList.push_back(new GsmHrCodec::GsmHrFactory(mSettings.mGsmHrPayloadType));
+    if (mSettings.mGsmHrPayloadType != -1)
+        mFactoryList.push_back(std::make_shared<GsmHrCodec::GsmHrFactory>(mSettings.mGsmHrPayloadType));
 #endif
 
 #if !defined(TARGET_ANDROID) && defined(USE_EVS_CODEC)
@@ -255,15 +371,14 @@ void CodecList::init(const Settings& settings)
         evs_params.ptime = 20;
         evs_params.ptype = spec.mPayloadType;
 
-    mFactoryList.push_back(new EVSCodec::EVSFactory(evs_params));
+        mFactoryList.push_back(std::make_shared<EVSCodec::EVSFactory>(evs_params));
     }
 #endif
 }
 
 CodecList::~CodecList()
 {
-  for (auto f: mFactoryList)
+    mFactoryList.clear();
-    delete f;
 }
 
 int CodecList::count() const
@@ -292,21 +407,26 @@ void CodecList::fillCodecMap(CodecMap& cm)
     for (auto& factory: mFactoryList)
     {
         // Create codec here. Although they are not needed right now - they can be needed to find codec's info.
-    PCodec c = factory->create();
+        // PCodec c = factory->create();
-    cm.insert({factory->payloadType(), c});
+        cm.insert({factory->payloadType(), PCodec()});
     }
 }
 
+PCodec CodecList::createCodecByPayloadType(int payloadType)
+{
+    for (auto& factory: mFactoryList)
+    {
+        if (factory->payloadType() == payloadType)
+            return factory->create();
+    }
+    return {};
+}
 
 CodecListPriority::CodecListPriority()
-{
+{}
-
-}
 
 CodecListPriority::~CodecListPriority()
-{
+{}
-
-}
 
 bool CodecListPriority::isNegativePriority(const CodecListPriority::Item& item)
 {

src/engine/media/MT_CodecList.h

@@ -6,15 +6,14 @@
 #ifndef __MT_CODEC_LIST_H
 #define __MT_CODEC_LIST_H
 
-#include "../config.h"
+#include "../engine_config.h"
 
-#if defined(USE_RESIP_INTEGRATION)
 #include "resiprocate/resip/stack/SdpContents.hxx"
-#endif
 
 #include "MT_Codec.h"
 #include <vector>
 #include <set>
+#include <list>
 #include "../helper/HL_VariantMap.h"
 
 #define ALL_CODECS_STRING "OPUS,ISAC,ILBC,PCMU,PCMA,G722,GSM"
@@ -30,22 +29,22 @@ public:
         bool mSkipDecode            = false;
 
         // AMR payload types
-        std::set<int> mAmrWbPayloadType       = { MT_AMRWB_PAYLOADTYPE };
+        std::set<int64_t> mAmrWbPayloadType       = { };
-        std::set<int> mAmrNbPayloadType       = { MT_AMRNB_PAYLOADTYPE };
+        std::set<int64_t> mAmrNbPayloadType       = { };
-        std::set<int> mAmrWbOctetPayloadType  = { MT_AMRWB_OCTET_PAYLOADTYPE };
+        std::set<int64_t> mAmrWbOctetPayloadType  = { };
-        std::set<int> mAmrNbOctetPayloadType  = { MT_AMRNB_OCTET_PAYLOADTYPE };
+        std::set<int64_t> mAmrNbOctetPayloadType  = { };
 
         bool isAmrWb(int ptype) const { return mAmrWbOctetPayloadType.count(ptype) > 0 || mAmrWbPayloadType.count(ptype) > 0; }
         bool isAmrNb(int ptype) const { return mAmrNbOctetPayloadType.count(ptype) > 0 || mAmrNbPayloadType.count(ptype) > 0; }
 
-        int mIsac16KPayloadType     = MT_ISAC16K_PAYLOADTYPE;
+        int mIsac16KPayloadType     = -1;
-        int mIsac32KPayloadType     = MT_ISAC32K_PAYLOADTYPE;
+        int mIsac32KPayloadType     = -1;
-        int mIlbc20PayloadType      = MT_ILBC20_PAYLOADTYPE;
+        int mIlbc20PayloadType      = -1;
-        int mIlbc30PayloadType      = MT_ILBC30_PAYLOADTYPE;
+        int mIlbc30PayloadType      = -1;
-        int mGsmFrPayloadType       = 3; // GSM is codec with fixed payload type. But sometimes it has to be overwritten.
+        int mGsmFrPayloadType       = -1; // GSM is codec with fixed payload type. But sometimes it has to be overwritten.
         int mGsmFrPayloadLength     = 33; // Expected GSM payload length
-        int mGsmHrPayloadType       = MT_GSMHR_PAYLOADTYPE;
+        int mGsmHrPayloadType       = -1;
-        int mGsmEfrPayloadType      = MT_GSMEFR_PAYLOADTYPE;
+        int mGsmEfrPayloadType      = -1;
 
         struct EvsSpec
         {
@@ -58,7 +57,7 @@ public:
                 Bandwidth_FB
             };
 
-            Bandwidth mBandwidth = Bandwidth_NB;
+            Bandwidth mBandwidth = Bandwidth_FB;
 
             enum Encoding
             {
@@ -71,7 +70,7 @@ public:
             static EvsSpec parse(const std::string& spec);
 
             bool operator == (const EvsSpec& rhs) const { return std::tie(mPayloadType, mBandwidth, mEncodingType) == std::tie(rhs.mPayloadType, rhs.mBandwidth, rhs.mEncodingType);}
-            bool operator != (const EvsSpec& rhs) const { return ! (operator ==) (rhs);};
+            bool operator != (const EvsSpec& rhs) const { return ! (operator ==) (rhs);}
 
         };
 
@@ -89,35 +88,42 @@ public:
 
             bool isValid() const;
             bool operator == (const OpusSpec& rhs) const { return std::tie(mPayloadType, mRate, mChannels) == std::tie(rhs.mPayloadType, rhs.mRate, rhs.mChannels);}
-            bool operator != (const OpusSpec& rhs) const { return ! (operator ==) (rhs);};
+            bool operator != (const OpusSpec& rhs) const { return ! (operator ==) (rhs);}
 
             static OpusSpec parse(const std::string& spec);
         };
         std::vector<OpusSpec> mOpusSpec;
 
+        // Payload type
+        bool        contains(int ptype) const;
+
         // Textual representation - used in logging
         std::string toString() const;
+        void        clear();
 
         static Settings DefaultSettings;
 
-        #if defined(USE_RESIP_INTEGRATION)
         static Settings parseSdp(const std::list<resip::Codec>& codeclist);
-        #endif
+
         bool operator == (const Settings& rhs) const;
     };
 
     CodecList(const Settings& settings);
     ~CodecList();
-    void setSettings(const Settings& settings) { init(settings); }
+    void setSettings(const Settings& settings)
+    {
+        init(settings);
+    }
 
     int             count() const;
     Codec::Factory& codecAt(int index) const;
     int             findCodec(const std::string& name) const;
     void            fillCodecMap(CodecMap& cm);
-
+    PCodec          createCodecByPayloadType(int payloadType);
+    void            clear();
 
 protected:
-    typedef std::vector<Codec::Factory*> FactoryList;
+    typedef std::vector<std::shared_ptr<Codec::Factory>> FactoryList;
     FactoryList mFactoryList;
     Settings mSettings;
 

src/engine/media/MT_Dtmf.cpp

@@ -3,7 +3,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#include "../config.h"
+#include "../engine_config.h"
 #include "MT_Dtmf.h"
 
 

src/engine/media/MT_Dtmf.h

@@ -6,7 +6,7 @@
 #ifndef MT_DTMF
 #define MT_DTMF
 
-#include "../config.h"
+#include "../engine_config.h"
 #include <vector>
 #include <string>
 #include "../helper/HL_ByteBuffer.h"

src/engine/media/MT_EvsCodec.cpp

@@ -146,8 +146,7 @@ PCodec EVSCodec::EVSFactory::create()
 }
 
 EVSCodec::EVSCodec(): EVSCodec(StreamParameters())
-{
+{}
-}
 
 EVSCodec::EVSCodec(const StreamParameters &sp)
 {

src/engine/media/MT_EvsCodec.h

@@ -1,5 +1,7 @@
-#pragma once
+#ifndef __MT_EVS_CODEC_H
+#define __MT_EVS_CODEC_H
 
+#include "../engine_config.h"
 #include <set>
 #include <map>
 #include <memory>
@@ -10,7 +12,6 @@
 #include <assert.h>
 #include <sstream>
 
-#include "config.h"
 #include "MT_Codec.h"
 
 #include "libevs/lib_com/prot.h"
@@ -40,7 +41,7 @@ public:
 
     public:
         EVSFactory(StreamParameters& sp);
-        const char* name() { return MT_EVS_CODECNAME; };
+        const char* name() { return MT_EVS_CODECNAME; }
         int samplerate();
         int payloadType();
         PCodec create();
@@ -51,7 +52,7 @@ public:
     EVSCodec(const StreamParameters& sp);
     ~EVSCodec() override;
 
-    const char* name() override { return MT_EVS_CODECNAME; } ;
+    const char* name() override { return MT_EVS_CODECNAME; }
     int samplerate() override;
     int pcmLength() override;
     int frameTime() override;
@@ -68,3 +69,5 @@ private:
 };
 
 } // End of namespace
+
+#endif

src/engine/media/MT_NativeRtpSender.h

@@ -6,9 +6,9 @@
 #ifndef __MT_NATIVE_RTP_SENDER_H
 #define __MT_NATIVE_RTP_SENDER_H
 
-#include "../config.h"
+#include "../engine_config.h"
 #include "jrtplib/src/rtpexternaltransmitter.h"
-#include "srtp/include/srtp.h"
+#include "libsrtp/include/srtp.h"
 #include "../helper/HL_NetworkSocket.h"
 #include "../helper/HL_InternetAddress.h"
 #include "../helper/HL_Rtp.h"

src/engine/media/MT_SrtpHelper.cpp

@@ -1,42 +1,90 @@
-/* Copyright(C) 2007-2016 VoIP objects (voipobjects.com)
+/* Copyright(C) 2007-2025 VoIP objects (voipobjects.com)
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+#include "../engine_config.h"
 #include "MT_SrtpHelper.h"
 #include "../helper/HL_Log.h"
 #include "../helper/HL_Exception.h"
 #include "../helper/HL_Rtp.h"
+#include <openssl/rand.h>
 #include <assert.h>
+#include <format>
+
+struct SrtpSuiteAndName
+{
+    SrtpSuite mSuite;
+    std::string mName, mAltName;
+};
+
+std::vector<SrtpSuiteAndName> SrtpSuiteList {
+    { SRTP_AES_256_AUTH_80,     "AES_CM_256_HMAC_SHA1_80", "AES_256_CM_HMAC_SHA1_80" },
+    { SRTP_AES_128_AUTH_80,     "AES_CM_128_HMAC_SHA1_80", "AES_128_CM_HMAC_SHA1_80" },
+    { SRTP_AES_192_AUTH_80,     "AES_CM_192_HMAC_SHA1_80", "AES_192_CM_HMAC_SHA1_80" },
+    { SRTP_AES_256_AUTH_32,     "AES_CM_256_HMAC_SHA1_32", "AES_256_CM_HMAC_SHA1_32" },
+    { SRTP_AES_192_AUTH_32,     "AES_CM_192_HMAC_SHA1_32", "AES_192_CM_HMAC_SHA1_32" },
+    { SRTP_AES_128_AUTH_32,     "AES_CM_128_HMAC_SHA1_32", "AES_128_CM_HMAC_SHA1_32" },
+    { SRTP_AES_128_AUTH_NULL,   "AES_CM_128_NULL_AUTH", "AES_128_CM_NULL_AUTH"},
+    { SRTP_AED_AES_256_GCM,     "AEAD_AES_256_GCM"},
+    { SRTP_AED_AES_128_GCM,     "AEAD_AES_128_GCM"}
+};
+
+extern SrtpSuite   toSrtpSuite(const std::string_view& s)
+{
+    for (const auto& suite: SrtpSuiteList)
+        if (s == suite.mName || s == suite.mAltName)
+            return suite.mSuite;
+
+    return SRTP_NONE;
+}
+
+extern std::string_view toString(SrtpSuite suite)
+{
+    for (const auto& item: SrtpSuiteList)
+        if (item.mSuite == suite)
+            return item.mName;
+
+    return {};
+}
+
+typedef void (*set_srtp_policy_function) (srtp_crypto_policy_t*);
+
+set_srtp_policy_function findPolicyFunction(SrtpSuite suite)
+{
+    switch (suite)
+    {
+    case SRTP_AES_128_AUTH_80:      return &srtp_crypto_policy_set_rtp_default; break;
+    case SRTP_AES_192_AUTH_80:      return &srtp_crypto_policy_set_aes_cm_192_hmac_sha1_80; break;
+    case SRTP_AES_256_AUTH_80:      return &srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80; break;
+    case SRTP_AES_128_AUTH_32:      return &srtp_crypto_policy_set_aes_cm_128_hmac_sha1_32; break;
+    case SRTP_AES_192_AUTH_32:      return &srtp_crypto_policy_set_aes_cm_192_hmac_sha1_32; break;
+    case SRTP_AES_256_AUTH_32:      return &srtp_crypto_policy_set_aes_cm_256_hmac_sha1_32; break;
+    case SRTP_AES_128_AUTH_NULL:    return &srtp_crypto_policy_set_aes_cm_128_null_auth; break;
+    case SRTP_AED_AES_256_GCM:      return &srtp_crypto_policy_set_aes_gcm_256_16_auth; break;
+    case SRTP_AED_AES_128_GCM:      return &srtp_crypto_policy_set_aes_gcm_128_16_auth; break;
+    case SRTP_NONE:                 return nullptr;
+    }
+
+    return nullptr;
+}
 
 // --- SrtpStream ---
-void initSrtpStream(SrtpStream& s, unsigned ssrc, SrtpSuite suite)
+static void configureSrtpStream(SrtpStream& s, uint16_t ssrc, SrtpSuite suite)
 {
     s.second.ssrc.type = ssrc_specific;
     s.second.ssrc.value = ntohl(ssrc);
-  s.second.next = NULL;
+    s.second.next = nullptr;
-  switch (suite)
+    set_srtp_policy_function func = findPolicyFunction(suite);
-  {
+    if (!func)
-  case SRTP_AES_128_AUTH_80:
+        throw std::runtime_error(std::format("SRTP suite {} is not supported", toString(suite)));
-    crypto_policy_set_aes_cm_128_hmac_sha1_80(&s.second.rtp);
+    func(&s.second.rtp);
-    crypto_policy_set_aes_cm_128_hmac_sha1_80(&s.second.rtcp);
+    func(&s.second.rtcp);
-    break;
-
-  case SRTP_AES_256_AUTH_80:
-    crypto_policy_set_aes_cm_256_hmac_sha1_80(&s.second.rtp);
-    crypto_policy_set_aes_cm_256_hmac_sha1_80(&s.second.rtcp);
-    break;
-
-  default:
-    assert(0);
-  }
 }
 
 SrtpSession::SrtpSession()
-:mInboundSession(NULL), mOutboundSession(NULL)
+    :mInboundSession(nullptr), mOutboundSession(nullptr)
 {
-  mInboundSession = NULL;
-  mOutboundSession = NULL;
     mSuite = SRTP_NONE;
 
     memset(&mInboundPolicy, 0, sizeof mInboundPolicy);
@@ -45,15 +93,18 @@ SrtpSession::SrtpSession()
     memset(&mOutboundPolicy, 0, sizeof mOutboundPolicy);
     mOutboundPolicy.ssrc.type = ssrc_specific;
 
-  // Generate outgoing keys
+    // Generate outgoing keys for all ciphers
-
+    auto putKey = [this](SrtpSuite suite, size_t length){
-  mOutgoingKey[SRTP_AES_128_AUTH_80-1].first = PByteBuffer(new ByteBuffer());
+        auto key = std::make_shared<ByteBuffer>();
-  mOutgoingKey[SRTP_AES_128_AUTH_80-1].first->resize(30);
+        key->resize(length);
-  crypto_get_random((unsigned char*)mOutgoingKey[SRTP_AES_128_AUTH_80-1].first->mutableData(), 30);
+        RAND_bytes(key->mutableData(), key->size());
-
+        mOutgoingKey[suite].first = key;
-  mOutgoingKey[SRTP_AES_256_AUTH_80-1].first = PByteBuffer(new ByteBuffer());
+    };
-  mOutgoingKey[SRTP_AES_256_AUTH_80-1].first->resize(46);
+    putKey(SRTP_AES_128_AUTH_80, 30); putKey(SRTP_AES_128_AUTH_32, 30);
-  crypto_get_random((unsigned char*)mOutgoingKey[SRTP_AES_256_AUTH_80-1].first->mutableData(), 46);
+    putKey(SRTP_AES_192_AUTH_80, 38); putKey(SRTP_AES_192_AUTH_32, 38);
+    putKey(SRTP_AES_256_AUTH_80, 46); putKey(SRTP_AES_256_AUTH_32, 46);
+    putKey(SRTP_AED_AES_128_GCM, 28);
+    putKey(SRTP_AED_AES_256_GCM, 44);
 
 }
 
@@ -61,7 +112,7 @@ SrtpSession::~SrtpSession()
 {
 }
 
-void SrtpSession::addSsrc(unsigned ssrc, SsrcDirection d)
+/*void SrtpSession::addSsrc(unsigned ssrc, SsrcDirection d)
 {
     Lock l(mGuard);
     assert(mSuite != SRTP_NONE);
@@ -76,7 +127,7 @@ void SrtpSession::addSsrc(unsigned ssrc, SsrcDirection d)
         if (streamIter != mIncomingMap.end())
             return;
 
-    initSrtpStream(s, ssrc, mSuite);
+        configureSrtpStream(s, ssrc, mSuite);
         s.second.key = (unsigned char*)mIncomingKey.first->mutableData();
         mIncomingMap[ssrc] = s;
         srtp_add_stream(mInboundSession, &s.second);
@@ -86,13 +137,13 @@ void SrtpSession::addSsrc(unsigned ssrc, SsrcDirection d)
         streamIter = mOutgoingMap.find(ssrc);
         if (streamIter != mOutgoingMap.end())
             return;
-    initSrtpStream(s, ssrc, mSuite);
+        configureSrtpStream(s, ssrc, mSuite);
         s.second.key = (unsigned char*)mOutgoingKey[int(mSuite)-1].first->mutableData();
         mOutgoingMap[ssrc] = s;
         srtp_add_stream(mOutboundSession, &s.second);
         return;
     }
-}
+}*/
 
 void SrtpSession::open(ByteBuffer& incomingKey, SrtpSuite suite)
 {
@@ -106,33 +157,26 @@ void SrtpSession::open(ByteBuffer& incomingKey, SrtpSuite suite)
     mSuite = suite;
 
     // Save key
-  mIncomingKey.first = PByteBuffer(new ByteBuffer(incomingKey));
+    mIncomingKey.first = std::make_shared<ByteBuffer>(incomingKey);
 
-  // Update policy
+    auto policyFunction = findPolicyFunction(suite);
-  switch (suite)
+    if (!policyFunction)
-  {
+        throw std::runtime_error(std::format("SRTP suite {} not found", toString(suite)));
-  case SRTP_AES_128_AUTH_80:
-    crypto_policy_set_aes_cm_128_hmac_sha1_80(&mInboundPolicy.rtp);
-    crypto_policy_set_aes_cm_128_hmac_sha1_80(&mInboundPolicy.rtcp);
-    crypto_policy_set_aes_cm_128_hmac_sha1_80(&mOutboundPolicy.rtp);
-    crypto_policy_set_aes_cm_128_hmac_sha1_80(&mOutboundPolicy.rtcp);
-    break;
 
-  case SRTP_AES_256_AUTH_80:
+    // Configure policies
-    crypto_policy_set_aes_cm_256_hmac_sha1_80(&mInboundPolicy.rtp);
+    policyFunction(&mInboundPolicy.rtp);
-    crypto_policy_set_aes_cm_256_hmac_sha1_80(&mInboundPolicy.rtcp);
+    policyFunction(&mInboundPolicy.rtcp);
-    crypto_policy_set_aes_cm_256_hmac_sha1_80(&mOutboundPolicy.rtp);
+    policyFunction(&mOutboundPolicy.rtp);
-    crypto_policy_set_aes_cm_256_hmac_sha1_80(&mOutboundPolicy.rtcp);
+    policyFunction(&mOutboundPolicy.rtcp);
-    break;
+
+    mOutboundPolicy.key = (unsigned char*)mOutgoingKey[int(suite)].first->mutableData();
+    mOutboundPolicy.ssrc.type = ssrc_any_outbound;
 
-  case SRTP_NONE:
-    break;
-  }
-  mOutboundPolicy.key = (unsigned char*)mOutgoingKey[int(suite)-1].first->mutableData();
     mInboundPolicy.key =  (unsigned char*)mIncomingKey.first->mutableData();
+    mInboundPolicy.ssrc.type = ssrc_any_inbound;
 
     // Create SRTP session
-  err_status_t err;
+    srtp_err_status_t err;
 
     err = srtp_create(&mOutboundSession, &mOutboundPolicy);
     if (err)
@@ -156,13 +200,13 @@ void SrtpSession::close()
     if (mOutboundSession)
     {
         srtp_dealloc(mOutboundSession);
-    mOutboundSession = NULL;
+        mOutboundSession = nullptr;
     }
 
     if (mInboundSession)
     {
         srtp_dealloc(mInboundSession);
-    mInboundSession = NULL;
+        mInboundSession = nullptr;
     }
 }
 
@@ -175,44 +219,70 @@ SrtpKeySalt& SrtpSession::outgoingKey(SrtpSuite suite)
 
 bool SrtpSession::protectRtp(void* buffer, int* length)
 {
-  addSsrc(RtpHelper::findSsrc(buffer, *length), sdOutgoing);
+    // addSsrc(RtpHelper::findSsrc(buffer, *length), sdOutgoing);
 
     Lock l(mGuard);
     if (mOutboundSession)
-    return srtp_protect(mOutboundSession, buffer, length) == 0;
+    {
+        size_t srtp_len = MAX_VALID_UDPPACKET_SIZE;
+        auto code = srtp_protect(mOutboundSession,
+                                 (const uint8_t*)buffer, (size_t)*length,
+                                 (uint8_t*)buffer, &srtp_len,
+                                 0 /* mki_index, non-used */);
+        *length = srtp_len;
+        return code == 0;
+    }
     else
         return false;
 }
 
 bool SrtpSession::protectRtcp(void* buffer, int* length)
 {
-  addSsrc(RtpHelper::findSsrc(buffer, *length), sdOutgoing);
+    //addSsrc(RtpHelper::findSsrc(buffer, *length), sdOutgoing);
 
     Lock l(mGuard);
     if (mOutboundSession)
-    return srtp_protect_rtcp(mOutboundSession, buffer, length) == 0;
+    {
+        size_t srtp_len = MAX_VALID_UDPPACKET_SIZE;
+        auto code = srtp_protect_rtcp(mOutboundSession,
+                                      (const uint8_t*)buffer, (size_t)*length,
+                                      (uint8_t*)buffer, &srtp_len,
+                                      0 /* mki_index, non-used */);
+        *length = srtp_len;
+        return code == 0;
+    }
     else
         return false;
 }
 
-bool SrtpSession::unprotectRtp(void* buffer, int* length)
+bool SrtpSession::unprotectRtp(const void* src, size_t srcLength, void* dst, size_t* dstLength)
 {
-  addSsrc(RtpHelper::findSsrc(buffer, *length), sdIncoming);
+    //addSsrc(RtpHelper::findSsrc(buffer, *length), sdIncoming);
 
     Lock l(mGuard);
     if (mInboundSession)
-    return srtp_unprotect(mInboundSession, buffer, length) == 0;
+    {
+        auto code = srtp_unprotect(mInboundSession,
+                                   (const uint8_t*)src, srcLength,
+                                   (uint8_t*)dst, dstLength);
+        return code == 0;
+    }
     else
         return false;
 }
 
-bool SrtpSession::unprotectRtcp(void* buffer, int* length)
+bool SrtpSession::unprotectRtcp(const void* src, size_t srcLength, void* dst, size_t* dstLength)
 {
-  addSsrc(RtpHelper::findSsrc(buffer, *length), sdIncoming);
+    //addSsrc(RtpHelper::findSsrc(buffer, *length), sdIncoming);
 
     Lock l(mGuard);
     if (mInboundSession)
-    return srtp_unprotect_rtcp(mInboundSession, buffer, (int*)length) == 0;
+    {
+        auto code = srtp_unprotect_rtcp(mInboundSession,
+                                        (const uint8_t*)src, srcLength,
+                                        (uint8_t*)dst, dstLength);
+        return code == 0;
+    }
     else
         return false;
 }
@@ -223,9 +293,9 @@ void SrtpSession::initSrtp()
     if (GSrtpInitialized)
         return;
 
-  err_status_t err = srtp_init();
+    auto err = srtp_init();
 
-  if (err != err_status_ok) 
+    if (err != srtp_err_status_ok)
         throw Exception(ERR_SRTP, err);
     GSrtpInitialized = true;
 }

src/engine/media/MT_SrtpHelper.h

@@ -10,21 +10,35 @@
 #include <vector>
 #include <map>
 
-#include "srtp/include/srtp.h"
+#include "libsrtp/include/srtp.h"
-#include "../helper/HL_Sync.h"
+#include "HL_Sync.h"
-#include "../helper/HL_ByteBuffer.h"
+#include "HL_ByteBuffer.h"
+#include "HL_Types.h"
 
-#define SRTP_SUITE_NAME_2 "AES_CM_256_HMAC_SHA1_80"
+#define NAME_SRTP_AES_256_AUTH_80 "AES_CM_256_HMAC_SHA1_80"
-#define SRTP_SUITE_NAME_1 "AES_CM_128_HMAC_SHA1_80"
+#define NAME_SRTP_AES_128_AUTH_80 "AES_CM_128_HMAC_SHA1_80"
 
 enum SrtpSuite
 {
     SRTP_NONE,
     SRTP_AES_128_AUTH_80,
     SRTP_AES_256_AUTH_80,
-  SRTP_LAST = SRTP_AES_256_AUTH_80
+    SRTP_AES_192_AUTH_80,
+    SRTP_AES_128_AUTH_32,
+    SRTP_AES_256_AUTH_32,
+    SRTP_AES_192_AUTH_32,
+    SRTP_AES_128_AUTH_NULL,
+    SRTP_AED_AES_256_GCM,
+    SRTP_AED_AES_128_GCM,
+    SRTP_LAST = SRTP_AED_AES_128_GCM
+    // ToDo:
+    // a=crypto:1 AEAD_AES_256_GCM_8 inline:tN2A0vRjFBimpQsW2GasuJuPe7hKE26gki30APC8DVuySqCOYTs8lYBPR5I=
+    // a=crypto:3 AEAD_AES_128_GCM_8 inline:Ok7VL8SmBHSbZLw4dK6iQgpliYKGdY9BHLJcRw==
 };
 
+extern SrtpSuite        toSrtpSuite(const std::string_view& s);
+extern std::string_view toString(SrtpSuite suite);
+
 typedef std::pair<PByteBuffer, PByteBuffer> SrtpKeySalt;
 typedef std::pair<unsigned, srtp_policy_t> SrtpStream;
 
@@ -48,8 +62,8 @@ public:
     /* bufferPtr is RTP packet data i.e. header + payload. Buffer must be big enough to hold encrypted data. */
     bool protectRtp(void* buffer, int* length);
     bool protectRtcp(void* buffer, int* length);
-  bool unprotectRtp(void* buffer, int* length);
+    bool unprotectRtp(const void* src, size_t srcLength, void* dst, size_t* dstLength);
-  bool unprotectRtcp(void* buffer, int* length);
+    bool unprotectRtcp(const void* src, size_t srcLength, void* dst, size_t* dstLength);
 
 
     static void initSrtp();

src/engine/media/MT_Statistics.cpp

@@ -1,8 +1,7 @@
-#include <math.h>
+#include <cmath>
+#include <iostream>
 
 #include "MT_Statistics.h"
-#include "audio/Audio_Interface.h"
-#include "helper/HL_Log.h"
 #define LOG_SUBSYSTEM "Statistics"
 
 using namespace MT;
@@ -13,7 +12,7 @@ void JitterStatistics::process(jrtplib::RTPPacket* packet, int rate)
     uint32_t timestamp = packet->GetTimestamp();
     jrtplib::RTPTime receiveTime = packet->GetReceiveTime();
 
-    if (!mLastJitter.is_initialized())
+    if (!mLastJitter)
     {
         // First packet
         mReceiveTime = receiveTime;
@@ -55,8 +54,11 @@ void JitterStatistics::process(jrtplib::RTPPacket* packet, int rate)
         mReceiveTime = receiveTime;
         mReceiveTimestamp = timestamp;
 
-        // And mJitter are in seconds again
+        // And mJitter are in milliseconds again
-        mJitter.process(mLastJitter.value() / float(rate));
+        float jitter_s = mLastJitter.value() / (float(rate));
+        // std::cout << "Jitter (in seconds): " << std::dec << jitter_s << std::endl;
+
+        mJitter.process(jitter_s);
     }
 }
 
@@ -65,40 +67,10 @@ void JitterStatistics::process(jrtplib::RTPPacket* packet, int rate)
 
 
 Statistics::Statistics()
-    :mReceived(0), mSent(0), mReceivedRtp(0), mSentRtp(0),
+{}
-      mReceivedRtcp(0), mSentRtcp(0), mDuplicatedRtp(0), mOldRtp(0), mIllegalRtp(0),
-      mPacketLoss(0), mJitter(0.0), mAudioTime(0), mDecodedSize(0), mSsrc(0), mPacketDropped(0)
-{
-    mBitrateSwitchCounter = 0;
-    memset(mLoss, 0, sizeof mLoss);
-
-    // It is to keep track of statistics instance via grep | wc -l
-    //ICELogDebug(<< "Create statistics instance.");
-}
 
 Statistics::~Statistics()
-{
+{}
-}
-
-void Statistics::reset()
-{
-    mReceived = 0;
-    mSent = 0;
-    mReceivedRtp = 0;
-    mSentRtp = 0;
-    mReceivedRtcp = 0;
-    mSentRtcp = 0;
-    mDuplicatedRtp = 0;
-    mOldRtp = 0;
-    mPacketLoss = 0;
-    mIllegalRtp = 0;
-    mJitter = 0.0;
-    mAudioTime = 0;
-    mPacketDropped = 0;
-    mDecodedSize = 0;
-
-    memset(mLoss, 0, sizeof mLoss);
-}
 
 void Statistics::calculateBurstr(double* burstr, double* lossr) const
 {
@@ -127,7 +99,7 @@ void Statistics::calculateBurstr(double* burstr, double* lossr) const
     }
     else
         *burstr = 0;
-    //printf("total loss: %d\n", lost);
+
     if (mReceivedRtp > 0)
         *lossr = (double)((double)lost / (double)mReceivedRtp);
     else
@@ -199,16 +171,16 @@ Statistics& Statistics::operator += (const Statistics& src)
         mCodecName = src.mCodecName;
 
     // Find minimal
-    if (mFirstRtpTime.is_initialized())
+    if (mFirstRtpTime)
     {
-        if (src.mFirstRtpTime.is_initialized())
+        if (src.mFirstRtpTime)
         {
             if (mFirstRtpTime.value() > src.mFirstRtpTime.value())
                 mFirstRtpTime = src.mFirstRtpTime;
         }
     }
     else
-        if (src.mFirstRtpTime.is_initialized())
+    if (src.mFirstRtpTime)
         mFirstRtpTime = src.mFirstRtpTime;
 
     mBitrateSwitchCounter   += src.mBitrateSwitchCounter;
@@ -231,8 +203,8 @@ Statistics& Statistics::operator -= (const Statistics& src)
     mOldRtp             -= src.mOldRtp;
     mPacketLoss         -= src.mPacketLoss;
     mPacketDropped      -= src.mPacketDropped;
-
     mAudioTime          -= src.mAudioTime;
+
     for (auto codecStat: src.mCodecCount)
     {
         if (mCodecCount.find(codecStat.first) != mCodecCount.end())

src/engine/media/MT_Statistics.h

@@ -3,15 +3,17 @@
 
 #include <chrono>
 #include <map>
+#include <optional>
+#include <array>
 
 #include "audio/Audio_DataWindow.h"
 #include "helper/HL_Optional.hpp"
 #include "helper/HL_Statistics.h"
+#include "helper/HL_Types.h"
 
 #include "jrtplib/src/rtptimeutilities.h"
 #include "jrtplib/src/rtppacket.h"
 
-using std::experimental::optional;
 
 namespace MT
 {
@@ -39,7 +41,7 @@ protected:
     uint32_t                mReceiveTimestamp = 0;
 
     // It is classic jitter value in units
-    optional<float> mLastJitter;
+    std::optional<float>    mLastJitter;
 
     // Some statistics for jitter value in seconds
     TestResult<float>       mJitter;
@@ -51,39 +53,36 @@ protected:
 class Statistics
 {
 public:
-    size_t      mReceived,        // Received traffic in bytes
+    size_t                      mReceived = 0,        // Received traffic in bytes
-                mSent,            // Sent traffic in bytes
+                                mSent = 0,            // Sent traffic in bytes
-                mReceivedRtp,     // Number of received rtp packets
+                                mReceivedRtp = 0,     // Number of received rtp packets
-                mSentRtp,         // Number of sent rtp packets
+                                mSentRtp = 0,         // Number of sent rtp packets
-                mReceivedRtcp,    // Number of received rtcp packets
+                                mReceivedRtcp = 0,    // Number of received rtcp packets
-                mSentRtcp,        // Number of sent rtcp packets
+                                mSentRtcp = 0,        // Number of sent rtcp packets
-                mDuplicatedRtp,   // Number of received duplicated rtp packets
+                                mDuplicatedRtp = 0,   // Number of received duplicated rtp packets
-                mOldRtp,          // Number of late rtp packets
+                                mOldRtp = 0,          // Number of late rtp packets
-                mPacketLoss,      // Number of lost packets
+                                mPacketLoss = 0,      // Number of lost packets
-                mPacketDropped,   // Number of dropped packets (due to time unsync when playing)б
+                                mPacketDropped = 0,   // Number of dropped packets (due to time unsync when playing)б
-                mIllegalRtp;      // Number of rtp packets with bad payload type
+                                mIllegalRtp = 0;      // Number of rtp packets with bad payload type
 
     TestResult<float>           mDecodingInterval,      // Average interval on call to packet decode
                                 mDecodeRequested,       // Average amount of requested audio frames to play
                                 mPacketInterval;        // Average interval between packet adding to jitter buffer
 
-    int         mLoss[128];       // Every item is number of loss of corresping length
+    std::array<float, 128>      mLoss = {0};            // Every item is number of loss of corresping length
-    size_t      mAudioTime;       // Decoded/found time in milliseconds
+    size_t                      mAudioTime = 0;         // Decoded/found time in milliseconds
-    size_t      mDecodedSize;     // Number of decoded bytes
+    size_t                      mDecodedSize = 0;       // Number of decoded bytes
-    uint16_t    mSsrc;            // Last known SSRC ID in a RTP stream
+    uint16_t                    mSsrc = 0;              // Last known SSRC ID in a RTP stream
     ice::NetworkAddress         mRemotePeer;            // Last known remote RTP address
 
     // AMR codec bitrate switch counter
-    int       mBitrateSwitchCounter;
+    int                         mBitrateSwitchCounter = 0;
-
     std::string                 mCodecName;
-
+    float                       mJitter = 0.0f;          // Jitter
-    float     mJitter;          // Jitter
-
     TestResult<float>           mRttDelay; // RTT delay
 
     // Timestamp when first RTP packet has arrived
-    optional<std::chrono::system_clock::time_point> mFirstRtpTime;
+    std::optional<timepoint_t>  mFirstRtpTime;
 
     std::map<int, int>          mCodecCount;          // Stats on used codecs
 
@@ -98,11 +97,7 @@ public:
     Statistics& operator += (const Statistics& src);
     Statistics& operator -= (const Statistics& src);
 
-    float mNetworkMos = 0.0;
+    float mNetworkMos = 0.0f;
-#if defined(USE_PVQA_LIBRARY) && !defined(PVQA_SERVER)
-    float mPvqaMos = 0.0;
-    std::string mPvqaReport;
-#endif
 
     std::string toString() const;
 };

src/engine/media/MT_WebRtc.cpp

@@ -3,7 +3,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#include "../config.h"
+#include "../engine_config.h"
 #include "MT_WebRtc.h"
 #include "../helper/HL_Exception.h"
 

src/libs/fmt/.clang-format

@@ -0,0 +1,8 @@
+# Run manually to reformat a file:
+# clang-format -i --style=file <file>
+Language: Cpp
+BasedOnStyle: Google
+IndentPPDirectives: AfterHash
+IndentCaseLabels: false
+AlwaysBreakTemplateDeclarations: false
+DerivePointerAlignment: false

src/libs/fmt/.github/issue_template.md

@@ -0,0 +1,6 @@
+<!--
+Please make sure that the problem reproduces on the current master before
+submitting an issue.
+If possible please provide a repro on Compiler Explorer:
+https://godbolt.org/z/fxccbh53W.
+-->

src/libs/fmt/.github/pull_request_template.md

@@ -0,0 +1,6 @@
+<!--
+Please read the contribution guidelines before submitting a pull request:
+https://github.com/fmtlib/fmt/blob/master/CONTRIBUTING.md.
+By submitting this pull request, you agree that your contributions are licensed
+under the {fmt} license, and agree to future changes to the licensing.
+-->

src/libs/fmt/.github/workflows/doc.yml

@@ -0,0 +1,27 @@
+name: doc
+
+on: [push, pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    # Use Ubuntu 20.04 because doxygen 1.8.13 from Ubuntu 18.04 is broken.
+    runs-on: ubuntu-20.04
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Create Build Environment
+      run: |
+        sudo apt update
+        sudo apt install doxygen python3-virtualenv
+        sudo npm install -g less clean-css
+        cmake -E make_directory ${{runner.workspace}}/build
+
+    - name: Build
+      working-directory: ${{runner.workspace}}/build
+      env:
+        KEY: ${{secrets.KEY}}
+      run: $GITHUB_WORKSPACE/support/build-docs.py

src/libs/fmt/.github/workflows/linux.yml

@@ -0,0 +1,94 @@
+name: linux
+
+on: [push, pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        cxx: [g++-4.8, g++-10, clang++-9]
+        build_type: [Debug, Release]
+        std: [11]
+        os: [ubuntu-18.04]
+        include:
+          - cxx: g++-4.8
+            install: sudo apt install g++-4.8
+            os: ubuntu-18.04
+          - cxx: g++-8
+            build_type: Debug
+            std: 14
+            install: sudo apt install g++-8
+            os: ubuntu-18.04
+          - cxx: g++-8
+            build_type: Debug
+            std: 17
+            install: sudo apt install g++-8
+            os: ubuntu-18.04
+          - cxx: g++-10
+            build_type: Debug
+            std: 17
+            os: ubuntu-18.04
+          - cxx: g++-11
+            build_type: Debug
+            std: 20
+            os: ubuntu-20.04
+            install: sudo apt install g++-11
+          - cxx: clang++-8
+            build_type: Debug
+            std: 17
+            cxxflags: -stdlib=libc++
+            os: ubuntu-18.04
+            install: sudo apt install clang-8 libc++-8-dev libc++abi-8-dev
+          - cxx: clang++-9
+            build_type: Debug
+            fuzz: -DFMT_FUZZ=ON -DFMT_FUZZ_LINKMAIN=ON
+            std: 17
+            os: ubuntu-18.04
+          - cxx: clang++-11
+            build_type: Debug
+            std: 20
+            os: ubuntu-20.04
+          - cxx: clang++-11
+            build_type: Debug
+            std: 20
+            cxxflags: -stdlib=libc++
+            os: ubuntu-20.04
+            install: sudo apt install libc++-11-dev libc++abi-11-dev
+          - shared: -DBUILD_SHARED_LIBS=ON
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Create Build Environment
+      run: |
+        ${{matrix.install}}
+        sudo apt update
+        sudo apt install locales-all
+        cmake -E make_directory ${{runner.workspace}}/build
+
+    - name: Configure
+      working-directory: ${{runner.workspace}}/build
+      env:
+        CXX: ${{matrix.cxx}}
+        CXXFLAGS: ${{matrix.cxxflags}}
+      run: |
+        cmake -DCMAKE_BUILD_TYPE=${{matrix.build_type}} ${{matrix.fuzz}} ${{matrix.shared}} \
+              -DCMAKE_CXX_STANDARD=${{matrix.std}} -DFMT_DOC=OFF \
+              -DCMAKE_CXX_VISIBILITY_PRESET=hidden -DCMAKE_VISIBILITY_INLINES_HIDDEN=ON \
+              -DFMT_PEDANTIC=ON -DFMT_WERROR=ON $GITHUB_WORKSPACE
+
+    - name: Build
+      working-directory: ${{runner.workspace}}/build
+      run: |
+        threads=`nproc`
+        cmake --build . --config ${{matrix.build_type}} --parallel $threads
+
+    - name: Test
+      working-directory: ${{runner.workspace}}/build
+      run: ctest -C ${{matrix.build_type}}
+      env:
+        CTEST_OUTPUT_ON_FAILURE: True

src/libs/fmt/.github/workflows/macos.yml

@@ -0,0 +1,40 @@
+name: macos
+
+on: [push, pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: macos-10.15
+    strategy:
+      matrix:
+        build_type: [Debug, Release]
+        include:
+          - shared: -DBUILD_SHARED_LIBS=ON
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Create Build Environment
+      run: cmake -E make_directory ${{runner.workspace}}/build
+
+    - name: Configure
+      working-directory: ${{runner.workspace}}/build
+      run: |
+        cmake -DCMAKE_BUILD_TYPE=${{matrix.build_type}} ${{matrix.shared}} \
+              -DCMAKE_CXX_VISIBILITY_PRESET=hidden -DCMAKE_VISIBILITY_INLINES_HIDDEN=ON \
+              -DFMT_DOC=OFF -DFMT_PEDANTIC=ON -DFMT_WERROR=ON $GITHUB_WORKSPACE
+
+    - name: Build
+      working-directory: ${{runner.workspace}}/build
+      run: |
+        threads=`sysctl -n hw.logicalcpu`
+        cmake --build . --config ${{matrix.build_type}} --parallel $threads
+
+    - name: Test
+      working-directory: ${{runner.workspace}}/build
+      run: ctest -C ${{matrix.build_type}}
+      env:
+        CTEST_OUTPUT_ON_FAILURE: True

src/libs/fmt/.github/workflows/windows.yml

@@ -0,0 +1,92 @@
+name: windows
+
+on: [push, pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ${{matrix.os}}
+    strategy:
+      matrix:
+        # windows-2019 has MSVC 2019 installed;
+        # windows-2022 has MSVC 2022 installed:
+        # https://github.com/actions/virtual-environments.
+        os: [windows-2019]
+        platform: [Win32, x64]
+        toolset: [v140, v141, v142]
+        standard: [14, 17, 20]
+        shared: ["", -DBUILD_SHARED_LIBS=ON]
+        build_type: [Debug, Release]
+        exclude:
+          - { toolset: v140, standard: 17 }
+          - { toolset: v140, standard: 20 }
+          - { toolset: v141, standard: 14 }
+          - { toolset: v141, standard: 20 }
+          - { toolset: v142, standard: 14 }
+          - { platform: Win32, toolset: v140 }
+          - { platform: Win32, toolset: v141 }
+          - { platform: Win32, standard: 14 }
+          - { platform: Win32, standard: 20 }
+          - { platform: x64, toolset: v140, shared: -DBUILD_SHARED_LIBS=ON }
+          - { platform: x64, toolset: v141, shared: -DBUILD_SHARED_LIBS=ON }
+          - { platform: x64, standard: 14, shared: -DBUILD_SHARED_LIBS=ON }
+          - { platform: x64, standard: 20, shared: -DBUILD_SHARED_LIBS=ON }
+        include:
+          - os: windows-2022
+            platform: x64
+            toolset: v143
+            build_type: Debug
+            standard: 20
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Create Build Environment
+      run: cmake -E make_directory ${{runner.workspace}}/build
+
+    - name: Configure
+      # Use a bash shell for $GITHUB_WORKSPACE.
+      shell: bash
+      working-directory: ${{runner.workspace}}/build
+      run: |
+        cmake -A ${{matrix.platform}} -T ${{matrix.toolset}} \
+              -DCMAKE_CXX_STANDARD=${{matrix.standard}} \
+              ${{matrix.shared}} -DCMAKE_BUILD_TYPE=${{matrix.build_type}} \
+              $GITHUB_WORKSPACE
+
+    - name: Build
+      working-directory: ${{runner.workspace}}/build
+      run: |
+        $threads = (Get-CimInstance Win32_ComputerSystem).NumberOfLogicalProcessors
+        cmake --build . --config ${{matrix.build_type}} --parallel $threads
+
+    - name: Test
+      working-directory: ${{runner.workspace}}/build
+      run: ctest -C ${{matrix.build_type}} -V
+      env:
+        CTEST_OUTPUT_ON_FAILURE: True
+
+  mingw:
+    runs-on: windows-latest
+    defaults:
+      run:
+        shell: msys2 {0}
+    strategy:
+      matrix:
+        sys: [ mingw64, mingw32, ucrt64 ]
+    steps:
+    - uses: msys2/setup-msys2@v2
+      with:
+        release: false
+        msystem: ${{matrix.sys}}
+        pacboy: cc:p cmake:p ninja:p lld:p
+    - uses: actions/checkout@v2
+    - name: Configure
+      run: cmake -B ../build -DBUILD_SHARED_LIBS=ON -DCMAKE_BUILD_TYPE=Debug
+      env: { LDFLAGS: -fuse-ld=lld }
+    - name: Build
+      run: cmake --build ../build
+    - name: Test
+      run: ctest -j `nproc` --test-dir ../build

src/libs/fmt/.gitignore

@@ -0,0 +1,37 @@
+.vscode/
+.vs/
+
+*.iml
+.idea/
+.externalNativeBuild/
+.gradle/
+gradle/
+gradlew*
+local.properties
+build/
+support/.cxx
+
+bin/
+/_CPack_Packages
+/CMakeScripts
+/doc/doxyxml
+/doc/html
+/doc/node_modules
+virtualenv
+/Testing
+/install_manifest.txt
+*~
+*.a
+*.so*
+*.xcodeproj
+*.zip
+cmake_install.cmake
+CPack*.cmake
+fmt-*.cmake
+CTestTestfile.cmake
+CMakeCache.txt
+CMakeFiles
+FMT.build
+Makefile
+run-msbuild.bat
+fmt.pc

src/libs/fmt/CMakeLists.txt

@@ -0,0 +1,387 @@
+cmake_minimum_required(VERSION 3.1...3.18)
+
+# Fallback for using newer policies on CMake <3.12.
+if(${CMAKE_VERSION} VERSION_LESS 3.12)
+  cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
+endif()
+
+# Determine if fmt is built as a subproject (using add_subdirectory)
+# or if it is the master project.
+if (NOT DEFINED FMT_MASTER_PROJECT)
+  set(FMT_MASTER_PROJECT OFF)
+  if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
+    set(FMT_MASTER_PROJECT ON)
+    message(STATUS "CMake version: ${CMAKE_VERSION}")
+  endif ()
+endif ()
+
+# Joins arguments and places the results in ${result_var}.
+function(join result_var)
+  set(result "")
+  foreach (arg ${ARGN})
+    set(result "${result}${arg}")
+  endforeach ()
+  set(${result_var} "${result}" PARENT_SCOPE)
+endfunction()
+
+function(enable_module target)
+  if (MSVC)
+    set(BMI ${CMAKE_CURRENT_BINARY_DIR}/${target}.ifc)
+    target_compile_options(${target}
+      PRIVATE /interface /ifcOutput ${BMI}
+      INTERFACE /reference fmt=${BMI})
+  endif ()
+  set_target_properties(${target} PROPERTIES ADDITIONAL_CLEAN_FILES ${BMI})
+  set_source_files_properties(${BMI} PROPERTIES GENERATED ON)
+endfunction()
+
+include(CMakeParseArguments)
+
+# Sets a cache variable with a docstring joined from multiple arguments:
+#   set(<variable> <value>... CACHE <type> <docstring>...)
+# This allows splitting a long docstring for readability.
+function(set_verbose)
+  # cmake_parse_arguments is broken in CMake 3.4 (cannot parse CACHE) so use
+  # list instead.
+  list(GET ARGN 0 var)
+  list(REMOVE_AT ARGN 0)
+  list(GET ARGN 0 val)
+  list(REMOVE_AT ARGN 0)
+  list(REMOVE_AT ARGN 0)
+  list(GET ARGN 0 type)
+  list(REMOVE_AT ARGN 0)
+  join(doc ${ARGN})
+  set(${var} ${val} CACHE ${type} ${doc})
+endfunction()
+
+# Set the default CMAKE_BUILD_TYPE to Release.
+# This should be done before the project command since the latter can set
+# CMAKE_BUILD_TYPE itself (it does so for nmake).
+if (FMT_MASTER_PROJECT AND NOT CMAKE_BUILD_TYPE)
+  set_verbose(CMAKE_BUILD_TYPE Release CACHE STRING
+              "Choose the type of build, options are: None(CMAKE_CXX_FLAGS or "
+              "CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel.")
+endif ()
+
+project(FMT CXX)
+include(GNUInstallDirs)
+set_verbose(FMT_INC_DIR ${CMAKE_INSTALL_INCLUDEDIR} CACHE STRING
+            "Installation directory for include files, a relative path that "
+            "will be joined with ${CMAKE_INSTALL_PREFIX} or an absolute path.")
+
+option(FMT_PEDANTIC "Enable extra warnings and expensive tests." OFF)
+option(FMT_WERROR "Halt the compilation with an error on compiler warnings."
+       OFF)
+
+# Options that control generation of various targets.
+option(FMT_DOC "Generate the doc target." ${FMT_MASTER_PROJECT})
+option(FMT_INSTALL "Generate the install target." ${FMT_MASTER_PROJECT})
+option(FMT_TEST "Generate the test target." ${FMT_MASTER_PROJECT})
+option(FMT_FUZZ "Generate the fuzz target." OFF)
+option(FMT_CUDA_TEST "Generate the cuda-test target." OFF)
+option(FMT_OS "Include core requiring OS (Windows/Posix) " ON)
+option(FMT_MODULE "Build a module instead of a traditional library." OFF)
+option(FMT_SYSTEM_HEADERS "Expose headers with marking them as system." OFF)
+
+set(FMT_CAN_MODULE OFF)
+if (CMAKE_CXX_STANDARD GREATER 17 AND
+    # msvc 16.10-pre4
+    MSVC AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 19.29.30035)
+  set(FMT_CAN_MODULE OFF)
+endif ()
+if (NOT FMT_CAN_MODULE)
+  set(FMT_MODULE OFF)
+  message(STATUS "Module support is disabled.")
+endif ()
+if (FMT_TEST AND FMT_MODULE)
+  # The tests require {fmt} to be compiled as traditional library
+  message(STATUS "Testing is incompatible with build mode 'module'.")
+endif ()
+set(FMT_SYSTEM_HEADERS_ATTRIBUTE "")
+if (FMT_SYSTEM_HEADERS)
+  set(FMT_SYSTEM_HEADERS_ATTRIBUTE SYSTEM)
+endif ()
+
+# Get version from core.h
+file(READ include/fmt/core.h core_h)
+if (NOT core_h MATCHES "FMT_VERSION ([0-9]+)([0-9][0-9])([0-9][0-9])")
+  message(FATAL_ERROR "Cannot get FMT_VERSION from core.h.")
+endif ()
+# Use math to skip leading zeros if any.
+math(EXPR CPACK_PACKAGE_VERSION_MAJOR ${CMAKE_MATCH_1})
+math(EXPR CPACK_PACKAGE_VERSION_MINOR ${CMAKE_MATCH_2})
+math(EXPR CPACK_PACKAGE_VERSION_PATCH ${CMAKE_MATCH_3})
+join(FMT_VERSION ${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.
+                 ${CPACK_PACKAGE_VERSION_PATCH})
+message(STATUS "Version: ${FMT_VERSION}")
+
+message(STATUS "Build type: ${CMAKE_BUILD_TYPE}")
+
+if (NOT CMAKE_RUNTIME_OUTPUT_DIRECTORY)
+  set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+endif ()
+
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
+  "${CMAKE_CURRENT_SOURCE_DIR}/support/cmake")
+
+include(cxx14)
+include(JoinPaths)
+
+list(FIND CMAKE_CXX_COMPILE_FEATURES "cxx_variadic_templates" index)
+if (${index} GREATER -1)
+  # Use cxx_variadic_templates instead of more appropriate cxx_std_11 for
+  # compatibility with older CMake versions.
+  set(FMT_REQUIRED_FEATURES cxx_variadic_templates)
+endif ()
+message(STATUS "Required features: ${FMT_REQUIRED_FEATURES}")
+
+if (FMT_MASTER_PROJECT AND NOT DEFINED CMAKE_CXX_VISIBILITY_PRESET)
+  set_verbose(CMAKE_CXX_VISIBILITY_PRESET hidden CACHE STRING
+              "Preset for the export of private symbols")
+  set_property(CACHE CMAKE_CXX_VISIBILITY_PRESET PROPERTY STRINGS
+               hidden default)
+endif ()
+
+if (FMT_MASTER_PROJECT AND NOT DEFINED CMAKE_VISIBILITY_INLINES_HIDDEN)
+  set_verbose(CMAKE_VISIBILITY_INLINES_HIDDEN ON CACHE BOOL
+              "Whether to add a compile flag to hide symbols of inline functions")
+endif ()
+
+if (CMAKE_CXX_COMPILER_ID MATCHES "GNU")
+  set(PEDANTIC_COMPILE_FLAGS -pedantic-errors -Wall -Wextra -pedantic
+      -Wold-style-cast -Wundef
+      -Wredundant-decls -Wwrite-strings -Wpointer-arith
+      -Wcast-qual -Wformat=2 -Wmissing-include-dirs
+      -Wcast-align
+      -Wctor-dtor-privacy -Wdisabled-optimization
+      -Winvalid-pch -Woverloaded-virtual
+      -Wconversion -Wundef
+      -Wno-ctor-dtor-privacy -Wno-format-nonliteral)
+  if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.6)
+      set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS}
+         -Wno-dangling-else -Wno-unused-local-typedefs)
+  endif ()
+  if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.0)
+      set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} -Wdouble-promotion
+          -Wtrampolines -Wzero-as-null-pointer-constant -Wuseless-cast
+          -Wvector-operation-performance -Wsized-deallocation -Wshadow)
+  endif ()
+  if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 6.0)
+      set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} -Wshift-overflow=2
+          -Wnull-dereference -Wduplicated-cond)
+  endif ()
+  set(WERROR_FLAG -Werror)
+endif ()
+
+if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+  set(PEDANTIC_COMPILE_FLAGS -Wall -Wextra -pedantic -Wconversion -Wundef
+      -Wdeprecated -Wweak-vtables -Wshadow
+      -Wno-gnu-zero-variadic-macro-arguments)
+  check_cxx_compiler_flag(-Wzero-as-null-pointer-constant HAS_NULLPTR_WARNING)
+  if (HAS_NULLPTR_WARNING)
+    set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS}
+        -Wzero-as-null-pointer-constant)
+  endif ()
+  set(WERROR_FLAG -Werror)
+endif ()
+
+if (MSVC)
+  set(PEDANTIC_COMPILE_FLAGS /W3)
+  set(WERROR_FLAG /WX)
+endif ()
+
+if (FMT_MASTER_PROJECT AND CMAKE_GENERATOR MATCHES "Visual Studio")
+  # If Microsoft SDK is installed create script run-msbuild.bat that
+  # calls SetEnv.cmd to set up build environment and runs msbuild.
+  # It is useful when building Visual Studio projects with the SDK
+  # toolchain rather than Visual Studio.
+  include(FindSetEnv)
+  if (WINSDK_SETENV)
+    set(MSBUILD_SETUP "call \"${WINSDK_SETENV}\"")
+  endif ()
+  # Set FrameworkPathOverride to get rid of MSB3644 warnings.
+  join(netfxpath
+       "C:\\Program Files\\Reference Assemblies\\Microsoft\\Framework\\"
+       ".NETFramework\\v4.0")
+  file(WRITE run-msbuild.bat "
+    ${MSBUILD_SETUP}
+    ${CMAKE_MAKE_PROGRAM} -p:FrameworkPathOverride=\"${netfxpath}\" %*")
+endif ()
+
+function(add_headers VAR)
+  set(headers ${${VAR}})
+  foreach (header ${ARGN})
+    set(headers ${headers} include/fmt/${header})
+  endforeach()
+  set(${VAR} ${headers} PARENT_SCOPE)
+endfunction()
+
+# Define the fmt library, its includes and the needed defines.
+add_headers(FMT_HEADERS args.h chrono.h color.h compile.h core.h format.h
+                        format-inl.h os.h ostream.h printf.h ranges.h std.h
+                        xchar.h)
+if (FMT_MODULE)
+  set(FMT_SOURCES src/fmt.cc)
+elseif (FMT_OS)
+  set(FMT_SOURCES src/format.cc src/os.cc)
+else()
+  set(FMT_SOURCES src/format.cc)
+endif ()
+
+add_library(fmt ${FMT_SOURCES} ${FMT_HEADERS} README.rst ChangeLog.rst)
+add_library(fmt::fmt ALIAS fmt)
+
+if (FMT_WERROR)
+  target_compile_options(fmt PRIVATE ${WERROR_FLAG})
+endif ()
+if (FMT_PEDANTIC)
+  target_compile_options(fmt PRIVATE ${PEDANTIC_COMPILE_FLAGS})
+endif ()
+if (FMT_MODULE)
+  enable_module(fmt)
+endif ()
+
+target_compile_features(fmt INTERFACE ${FMT_REQUIRED_FEATURES})
+
+target_include_directories(fmt ${FMT_SYSTEM_HEADERS_ATTRIBUTE} PUBLIC
+  $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
+  $<INSTALL_INTERFACE:${FMT_INC_DIR}>)
+
+set(FMT_DEBUG_POSTFIX d CACHE STRING "Debug library postfix.")
+
+set_target_properties(fmt PROPERTIES
+  VERSION ${FMT_VERSION} SOVERSION ${CPACK_PACKAGE_VERSION_MAJOR}
+  PUBLIC_HEADER "${FMT_HEADERS}"
+  DEBUG_POSTFIX "${FMT_DEBUG_POSTFIX}")
+
+# Set FMT_LIB_NAME for pkg-config fmt.pc. We cannot use the OUTPUT_NAME target
+# property because it's not set by default.
+set(FMT_LIB_NAME fmt)
+if (CMAKE_BUILD_TYPE STREQUAL "Debug")
+  set(FMT_LIB_NAME ${FMT_LIB_NAME}${FMT_DEBUG_POSTFIX})
+endif ()
+
+if (BUILD_SHARED_LIBS)
+  target_compile_definitions(fmt PRIVATE FMT_EXPORT INTERFACE FMT_SHARED)
+endif ()
+if (FMT_SAFE_DURATION_CAST)
+  target_compile_definitions(fmt PUBLIC FMT_SAFE_DURATION_CAST)
+endif()
+
+add_library(fmt-header-only INTERFACE)
+add_library(fmt::fmt-header-only ALIAS fmt-header-only)
+
+target_compile_definitions(fmt-header-only INTERFACE FMT_HEADER_ONLY=1)
+target_compile_features(fmt-header-only INTERFACE ${FMT_REQUIRED_FEATURES})
+
+target_include_directories(fmt-header-only ${FMT_SYSTEM_HEADERS_ATTRIBUTE} INTERFACE
+  $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
+  $<INSTALL_INTERFACE:${FMT_INC_DIR}>)
+
+# Install targets.
+if (FMT_INSTALL)
+  include(CMakePackageConfigHelpers)
+  set_verbose(FMT_CMAKE_DIR ${CMAKE_INSTALL_LIBDIR}/cmake/fmt CACHE STRING
+              "Installation directory for cmake files, a relative path that "
+              "will be joined with ${CMAKE_INSTALL_PREFIX} or an absolute "
+              "path.")
+  set(version_config ${PROJECT_BINARY_DIR}/fmt-config-version.cmake)
+  set(project_config ${PROJECT_BINARY_DIR}/fmt-config.cmake)
+  set(pkgconfig ${PROJECT_BINARY_DIR}/fmt.pc)
+  set(targets_export_name fmt-targets)
+
+  set_verbose(FMT_LIB_DIR ${CMAKE_INSTALL_LIBDIR} CACHE STRING
+              "Installation directory for libraries, a relative path that "
+              "will be joined to ${CMAKE_INSTALL_PREFIX} or an absolute path.")
+
+  set_verbose(FMT_PKGCONFIG_DIR ${CMAKE_INSTALL_LIBDIR}/pkgconfig CACHE PATH
+              "Installation directory for pkgconfig (.pc) files, a relative "
+              "path that will be joined with ${CMAKE_INSTALL_PREFIX} or an "
+              "absolute path.")
+
+  # Generate the version, config and target files into the build directory.
+  write_basic_package_version_file(
+    ${version_config}
+    VERSION ${FMT_VERSION}
+    COMPATIBILITY AnyNewerVersion)
+
+  join_paths(libdir_for_pc_file "\${exec_prefix}" "${FMT_LIB_DIR}")
+  join_paths(includedir_for_pc_file "\${prefix}" "${FMT_INC_DIR}")
+
+  configure_file(
+    "${PROJECT_SOURCE_DIR}/support/cmake/fmt.pc.in"
+    "${pkgconfig}"
+    @ONLY)
+  configure_package_config_file(
+    ${PROJECT_SOURCE_DIR}/support/cmake/fmt-config.cmake.in
+    ${project_config}
+    INSTALL_DESTINATION ${FMT_CMAKE_DIR})
+
+  set(INSTALL_TARGETS fmt fmt-header-only)
+
+  # Install the library and headers.
+  install(TARGETS ${INSTALL_TARGETS} EXPORT ${targets_export_name}
+          LIBRARY DESTINATION ${FMT_LIB_DIR}
+          ARCHIVE DESTINATION ${FMT_LIB_DIR}
+          PUBLIC_HEADER DESTINATION "${FMT_INC_DIR}/fmt"
+          FRAMEWORK DESTINATION "."
+          RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+
+  # Use a namespace because CMake provides better diagnostics for namespaced
+  # imported targets.
+  export(TARGETS ${INSTALL_TARGETS} NAMESPACE fmt::
+         FILE ${PROJECT_BINARY_DIR}/${targets_export_name}.cmake)
+
+  # Install version, config and target files.
+  install(
+    FILES ${project_config} ${version_config}
+    DESTINATION ${FMT_CMAKE_DIR})
+  install(EXPORT ${targets_export_name} DESTINATION ${FMT_CMAKE_DIR}
+          NAMESPACE fmt::)
+
+  install(FILES $<TARGET_PDB_FILE:${INSTALL_TARGETS}>
+          DESTINATION ${FMT_LIB_DIR} OPTIONAL)
+  install(FILES "${pkgconfig}" DESTINATION "${FMT_PKGCONFIG_DIR}")
+endif ()
+
+if (FMT_DOC)
+  add_subdirectory(doc)
+endif ()
+
+if (FMT_TEST)
+  enable_testing()
+  add_subdirectory(test)
+endif ()
+
+# Control fuzzing independent of the unit tests.
+if (FMT_FUZZ)
+  add_subdirectory(test/fuzzing)
+
+  # The FMT_FUZZ macro is used to prevent resource exhaustion in fuzzing
+  # mode and make fuzzing practically possible. It is similar to
+  # FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION but uses a different name to
+  # avoid interfering with fuzzing of projects that use {fmt}.
+  # See also https://llvm.org/docs/LibFuzzer.html#fuzzer-friendly-build-mode.
+  target_compile_definitions(fmt PUBLIC FMT_FUZZ)
+endif ()
+
+set(gitignore ${PROJECT_SOURCE_DIR}/.gitignore)
+if (FMT_MASTER_PROJECT AND EXISTS ${gitignore})
+  # Get the list of ignored files from .gitignore.
+  file (STRINGS ${gitignore} lines)
+  list(REMOVE_ITEM lines /doc/html)
+  foreach (line ${lines})
+    string(REPLACE "." "[.]" line "${line}")
+    string(REPLACE "*" ".*" line "${line}")
+    set(ignored_files ${ignored_files} "${line}$" "${line}/")
+  endforeach ()
+  set(ignored_files ${ignored_files}
+    /.git /breathe /format-benchmark sphinx/ .buildinfo .doctrees)
+
+  set(CPACK_SOURCE_GENERATOR ZIP)
+  set(CPACK_SOURCE_IGNORE_FILES ${ignored_files})
+  set(CPACK_SOURCE_PACKAGE_FILE_NAME fmt-${FMT_VERSION})
+  set(CPACK_PACKAGE_NAME fmt)
+  set(CPACK_RESOURCE_FILE_README ${PROJECT_SOURCE_DIR}/README.rst)
+  include(CPack)
+endif ()

src/libs/fmt/CONTRIBUTING.md

@@ -0,0 +1,20 @@
+Contributing to {fmt}
+=====================
+
+By submitting a pull request or a patch, you represent that you have the right
+to license your contribution to the {fmt} project owners and the community,
+agree that your contributions are licensed under the {fmt} license, and agree
+to future changes to the licensing.
+
+All C++ code must adhere to [Google C++ Style Guide](
+https://google.github.io/styleguide/cppguide.html) with the following
+exceptions:
+
+* Exceptions are permitted
+* snake_case should be used instead of UpperCamelCase for function and type
+  names
+
+All documentation must adhere to the [Google Developer Documentation Style
+Guide](https://developers.google.com/style).
+
+Thanks for contributing!

src/libs/fmt/LICENSE.rst

@@ -0,0 +1,27 @@
+Copyright (c) 2012 - present, Victor Zverovich
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+--- Optional exception to the license ---
+
+As an exception, if, as a result of your compiling your source code, portions
+of this Software are embedded into a machine-executable object form of such
+source code, you may redistribute such embedded portions in such object form
+without including the above copyright and permission notices.

src/libs/fmt/README.rst

@@ -0,0 +1,531 @@
+.. image:: https://user-images.githubusercontent.com/
+           576385/156254208-f5b743a9-88cf-439d-b0c0-923d53e8d551.png
+   :width: 25%
+   :alt: {fmt}
+
+.. image:: https://github.com/fmtlib/fmt/workflows/linux/badge.svg
+   :target: https://github.com/fmtlib/fmt/actions?query=workflow%3Alinux
+
+.. image:: https://github.com/fmtlib/fmt/workflows/macos/badge.svg
+   :target: https://github.com/fmtlib/fmt/actions?query=workflow%3Amacos
+
+.. image:: https://github.com/fmtlib/fmt/workflows/windows/badge.svg
+   :target: https://github.com/fmtlib/fmt/actions?query=workflow%3Awindows
+
+.. image:: https://oss-fuzz-build-logs.storage.googleapis.com/badges/fmt.svg
+   :alt: fmt is continuously fuzzed at oss-fuzz
+   :target: https://bugs.chromium.org/p/oss-fuzz/issues/list?\
+            colspec=ID%20Type%20Component%20Status%20Proj%20Reported%20Owner%20\
+            Summary&q=proj%3Dfmt&can=1
+
+.. image:: https://img.shields.io/badge/stackoverflow-fmt-blue.svg
+   :alt: Ask questions at StackOverflow with the tag fmt
+   :target: https://stackoverflow.com/questions/tagged/fmt
+
+**{fmt}** is an open-source formatting library providing a fast and safe
+alternative to C stdio and C++ iostreams.
+
+If you like this project, please consider donating to one of the funds that
+help victims of the war in Ukraine: https://www.stopputin.net/.
+
+`Documentation <https://fmt.dev>`__
+
+`Cheat Sheets <https://hackingcpp.com/cpp/libs/fmt.html>`__
+
+Q&A: ask questions on `StackOverflow with the tag fmt
+<https://stackoverflow.com/questions/tagged/fmt>`_.
+
+Try {fmt} in `Compiler Explorer <https://godbolt.org/z/Eq5763>`_.
+
+Features
+--------
+
+* Simple `format API <https://fmt.dev/latest/api.html>`_ with positional arguments
+  for localization
+* Implementation of `C++20 std::format
+  <https://en.cppreference.com/w/cpp/utility/format>`__
+* `Format string syntax <https://fmt.dev/latest/syntax.html>`_ similar to Python's
+  `format <https://docs.python.org/3/library/stdtypes.html#str.format>`_
+* Fast IEEE 754 floating-point formatter with correct rounding, shortness and
+  round-trip guarantees
+* Safe `printf implementation
+  <https://fmt.dev/latest/api.html#printf-formatting>`_ including the POSIX
+  extension for positional arguments
+* Extensibility: `support for user-defined types
+  <https://fmt.dev/latest/api.html#formatting-user-defined-types>`_
+* High performance: faster than common standard library implementations of
+  ``(s)printf``, iostreams, ``to_string`` and ``to_chars``, see `Speed tests`_
+  and `Converting a hundred million integers to strings per second
+  <http://www.zverovich.net/2020/06/13/fast-int-to-string-revisited.html>`_
+* Small code size both in terms of source code with the minimum configuration
+  consisting of just three files, ``core.h``, ``format.h`` and ``format-inl.h``,
+  and compiled code; see `Compile time and code bloat`_
+* Reliability: the library has an extensive set of `tests
+  <https://github.com/fmtlib/fmt/tree/master/test>`_ and is `continuously fuzzed
+  <https://bugs.chromium.org/p/oss-fuzz/issues/list?colspec=ID%20Type%20
+  Component%20Status%20Proj%20Reported%20Owner%20Summary&q=proj%3Dfmt&can=1>`_
+* Safety: the library is fully type safe, errors in format strings can be
+  reported at compile time, automatic memory management prevents buffer overflow
+  errors
+* Ease of use: small self-contained code base, no external dependencies,
+  permissive MIT `license
+  <https://github.com/fmtlib/fmt/blob/master/LICENSE.rst>`_
+* `Portability <https://fmt.dev/latest/index.html#portability>`_ with
+  consistent output across platforms and support for older compilers
+* Clean warning-free codebase even on high warning levels such as
+  ``-Wall -Wextra -pedantic``
+* Locale-independence by default
+* Optional header-only configuration enabled with the ``FMT_HEADER_ONLY`` macro
+
+See the `documentation <https://fmt.dev>`_ for more details.
+
+Examples
+--------
+
+**Print to stdout** (`run <https://godbolt.org/z/Tevcjh>`_)
+
+.. code:: c++
+
+    #include <fmt/core.h>
+    
+    int main() {
+      fmt::print("Hello, world!\n");
+    }
+
+**Format a string** (`run <https://godbolt.org/z/oK8h33>`_)
+
+.. code:: c++
+
+    std::string s = fmt::format("The answer is {}.", 42);
+    // s == "The answer is 42."
+
+**Format a string using positional arguments** (`run <https://godbolt.org/z/Yn7Txe>`_)
+
+.. code:: c++
+
+    std::string s = fmt::format("I'd rather be {1} than {0}.", "right", "happy");
+    // s == "I'd rather be happy than right."
+
+**Print chrono durations** (`run <https://godbolt.org/z/K8s4Mc>`_)
+
+.. code:: c++
+
+    #include <fmt/chrono.h>
+
+    int main() {
+      using namespace std::literals::chrono_literals;
+      fmt::print("Default format: {} {}\n", 42s, 100ms);
+      fmt::print("strftime-like format: {:%H:%M:%S}\n", 3h + 15min + 30s);
+    }
+
+Output::
+
+    Default format: 42s 100ms
+    strftime-like format: 03:15:30
+
+**Print a container** (`run <https://godbolt.org/z/MxM1YqjE7>`_)
+
+.. code:: c++
+
+    #include <vector>
+    #include <fmt/ranges.h>
+
+    int main() {
+      std::vector<int> v = {1, 2, 3};
+      fmt::print("{}\n", v);
+    }
+
+Output::
+
+    [1, 2, 3]
+
+**Check a format string at compile time**
+
+.. code:: c++
+
+    std::string s = fmt::format("{:d}", "I am not a number");
+
+This gives a compile-time error in C++20 because ``d`` is an invalid format
+specifier for a string.
+
+**Write a file from a single thread**
+
+.. code:: c++
+
+    #include <fmt/os.h>
+
+    int main() {
+      auto out = fmt::output_file("guide.txt");
+      out.print("Don't {}", "Panic");
+    }
+
+This can be `5 to 9 times faster than fprintf
+<http://www.zverovich.net/2020/08/04/optimal-file-buffer-size.html>`_.
+
+**Print with colors and text styles**
+
+.. code:: c++
+
+    #include <fmt/color.h>
+
+    int main() {
+      fmt::print(fg(fmt::color::crimson) | fmt::emphasis::bold,
+                 "Hello, {}!\n", "world");
+      fmt::print(fg(fmt::color::floral_white) | bg(fmt::color::slate_gray) |
+                 fmt::emphasis::underline, "Hello, {}!\n", "мир");
+      fmt::print(fg(fmt::color::steel_blue) | fmt::emphasis::italic,
+                 "Hello, {}!\n", "世界");
+    }
+
+Output on a modern terminal:
+
+.. image:: https://user-images.githubusercontent.com/
+           576385/88485597-d312f600-cf2b-11ea-9cbe-61f535a86e28.png
+
+Benchmarks
+----------
+
+Speed tests
+~~~~~~~~~~~
+
+================= ============= ===========
+Library           Method        Run Time, s
+================= ============= ===========
+libc              printf          1.04
+libc++            std::ostream    3.05
+{fmt} 6.1.1       fmt::print      0.75
+Boost Format 1.67 boost::format   7.24
+Folly Format      folly::format   2.23
+================= ============= ===========
+
+{fmt} is the fastest of the benchmarked methods, ~35% faster than ``printf``.
+
+The above results were generated by building ``tinyformat_test.cpp`` on macOS
+10.14.6 with ``clang++ -O3 -DNDEBUG -DSPEED_TEST -DHAVE_FORMAT``, and taking the
+best of three runs. In the test, the format string ``"%0.10f:%04d:%+g:%s:%p:%c:%%\n"``
+or equivalent is filled 2,000,000 times with output sent to ``/dev/null``; for
+further details refer to the `source
+<https://github.com/fmtlib/format-benchmark/blob/master/src/tinyformat-test.cc>`_.
+
+{fmt} is up to 20-30x faster than ``std::ostringstream`` and ``sprintf`` on
+floating-point formatting (`dtoa-benchmark <https://github.com/fmtlib/dtoa-benchmark>`_)
+and faster than `double-conversion <https://github.com/google/double-conversion>`_ and
+`ryu <https://github.com/ulfjack/ryu>`_:
+
+.. image:: https://user-images.githubusercontent.com/576385/
+           95684665-11719600-0ba8-11eb-8e5b-972ff4e49428.png
+   :target: https://fmt.dev/unknown_mac64_clang12.0.html
+
+Compile time and code bloat
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The script `bloat-test.py
+<https://github.com/fmtlib/format-benchmark/blob/master/bloat-test.py>`_
+from `format-benchmark <https://github.com/fmtlib/format-benchmark>`_
+tests compile time and code bloat for nontrivial projects.
+It generates 100 translation units and uses ``printf()`` or its alternative
+five times in each to simulate a medium sized project.  The resulting
+executable size and compile time (Apple LLVM version 8.1.0 (clang-802.0.42),
+macOS Sierra, best of three) is shown in the following tables.
+
+**Optimized build (-O3)**
+
+============= =============== ==================== ==================
+Method        Compile Time, s Executable size, KiB Stripped size, KiB
+============= =============== ==================== ==================
+printf                    2.6                   29                 26
+printf+string            16.4                   29                 26
+iostreams                31.1                   59                 55
+{fmt}                    19.0                   37                 34
+Boost Format             91.9                  226                203
+Folly Format            115.7                  101                 88
+============= =============== ==================== ==================
+
+As you can see, {fmt} has 60% less overhead in terms of resulting binary code
+size compared to iostreams and comes pretty close to ``printf``. Boost Format
+and Folly Format have the largest overheads.
+
+``printf+string`` is the same as ``printf`` but with extra ``<string>``
+include to measure the overhead of the latter.
+
+**Non-optimized build**
+
+============= =============== ==================== ==================
+Method        Compile Time, s Executable size, KiB Stripped size, KiB
+============= =============== ==================== ==================
+printf                    2.2                   33                 30
+printf+string            16.0                   33                 30
+iostreams                28.3                   56                 52
+{fmt}                    18.2                   59                 50
+Boost Format             54.1                  365                303
+Folly Format             79.9                  445                430
+============= =============== ==================== ==================
+
+``libc``, ``lib(std)c++`` and ``libfmt`` are all linked as shared libraries to
+compare formatting function overhead only. Boost Format is a
+header-only library so it doesn't provide any linkage options.
+
+Running the tests
+~~~~~~~~~~~~~~~~~
+
+Please refer to `Building the library`__ for the instructions on how to build
+the library and run the unit tests.
+
+__ https://fmt.dev/latest/usage.html#building-the-library
+
+Benchmarks reside in a separate repository,
+`format-benchmarks <https://github.com/fmtlib/format-benchmark>`_,
+so to run the benchmarks you first need to clone this repository and
+generate Makefiles with CMake::
+
+    $ git clone --recursive https://github.com/fmtlib/format-benchmark.git
+    $ cd format-benchmark
+    $ cmake .
+
+Then you can run the speed test::
+
+    $ make speed-test
+
+or the bloat test::
+
+    $ make bloat-test
+    
+Migrating code
+--------------
+
+`clang-tidy-fmt <https://github.com/mikecrowe/clang-tidy-fmt>`_ provides clang
+tidy checks for converting occurrences of ``printf`` and ``fprintf`` to
+``fmt::print``.
+
+Projects using this library
+---------------------------
+
+* `0 A.D. <https://play0ad.com/>`_: a free, open-source, cross-platform
+  real-time strategy game
+
+* `2GIS <https://2gis.ru/>`_: free business listings with a city map
+
+* `AMPL/MP <https://github.com/ampl/mp>`_:
+  an open-source library for mathematical programming
+
+* `Aseprite <https://github.com/aseprite/aseprite>`_:
+  animated sprite editor & pixel art tool 
+
+* `AvioBook <https://www.aviobook.aero/en>`_: a comprehensive aircraft
+  operations suite
+  
+* `Blizzard Battle.net <https://battle.net/>`_: an online gaming platform
+  
+* `Celestia <https://celestia.space/>`_: real-time 3D visualization of space
+
+* `Ceph <https://ceph.com/>`_: a scalable distributed storage system
+
+* `ccache <https://ccache.dev/>`_: a compiler cache
+
+* `ClickHouse <https://github.com/ClickHouse/ClickHouse>`_: analytical database
+  management system
+
+* `CUAUV <https://cuauv.org/>`_: Cornell University's autonomous underwater
+  vehicle
+
+* `Drake <https://drake.mit.edu/>`_: a planning, control, and analysis toolbox
+  for nonlinear dynamical systems (MIT)
+
+* `Envoy <https://lyft.github.io/envoy/>`_: C++ L7 proxy and communication bus
+  (Lyft)
+
+* `FiveM <https://fivem.net/>`_: a modification framework for GTA V
+
+* `fmtlog <https://github.com/MengRao/fmtlog>`_: a performant fmtlib-style
+  logging library with latency in nanoseconds
+
+* `Folly <https://github.com/facebook/folly>`_: Facebook open-source library
+
+* `GemRB <https://gemrb.org/>`_: a portable open-source implementation of
+  Bioware’s Infinity Engine
+
+* `Grand Mountain Adventure
+  <https://store.steampowered.com/app/1247360/Grand_Mountain_Adventure/>`_:
+  a beautiful open-world ski & snowboarding game
+
+* `HarpyWar/pvpgn <https://github.com/pvpgn/pvpgn-server>`_:
+  Player vs Player Gaming Network with tweaks
+
+* `KBEngine <https://github.com/kbengine/kbengine>`_: an open-source MMOG server
+  engine
+
+* `Keypirinha <https://keypirinha.com/>`_: a semantic launcher for Windows
+
+* `Kodi <https://kodi.tv/>`_ (formerly xbmc): home theater software
+
+* `Knuth <https://kth.cash/>`_: high-performance Bitcoin full-node
+
+* `Microsoft Verona <https://github.com/microsoft/verona>`_:
+  research programming language for concurrent ownership
+
+* `MongoDB <https://mongodb.com/>`_: distributed document database
+
+* `MongoDB Smasher <https://github.com/duckie/mongo_smasher>`_: a small tool to
+  generate randomized datasets
+
+* `OpenSpace <https://openspaceproject.com/>`_: an open-source
+  astrovisualization framework
+
+* `PenUltima Online (POL) <https://www.polserver.com/>`_:
+  an MMO server, compatible with most Ultima Online clients
+
+* `PyTorch <https://github.com/pytorch/pytorch>`_: an open-source machine
+  learning library
+
+* `quasardb <https://www.quasardb.net/>`_: a distributed, high-performance,
+  associative database
+  
+* `Quill <https://github.com/odygrd/quill>`_: asynchronous low-latency logging library
+
+* `QKW <https://github.com/ravijanjam/qkw>`_: generalizing aliasing to simplify
+  navigation, and executing complex multi-line terminal command sequences
+
+* `redis-cerberus <https://github.com/HunanTV/redis-cerberus>`_: a Redis cluster
+  proxy
+
+* `redpanda <https://vectorized.io/redpanda>`_: a 10x faster Kafka® replacement
+  for mission critical systems written in C++
+
+* `rpclib <http://rpclib.net/>`_: a modern C++ msgpack-RPC server and client
+  library
+
+* `Salesforce Analytics Cloud
+  <https://www.salesforce.com/analytics-cloud/overview/>`_:
+  business intelligence software
+
+* `Scylla <https://www.scylladb.com/>`_: a Cassandra-compatible NoSQL data store
+  that can handle 1 million transactions per second on a single server
+
+* `Seastar <http://www.seastar-project.org/>`_: an advanced, open-source C++
+  framework for high-performance server applications on modern hardware
+
+* `spdlog <https://github.com/gabime/spdlog>`_: super fast C++ logging library
+
+* `Stellar <https://www.stellar.org/>`_: financial platform
+
+* `Touch Surgery <https://www.touchsurgery.com/>`_: surgery simulator
+
+* `TrinityCore <https://github.com/TrinityCore/TrinityCore>`_: open-source
+  MMORPG framework
+
+* `Windows Terminal <https://github.com/microsoft/terminal>`_: the new Windows
+  terminal
+
+`More... <https://github.com/search?q=fmtlib&type=Code>`_
+
+If you are aware of other projects using this library, please let me know
+by `email <mailto:victor.zverovich@gmail.com>`_ or by submitting an
+`issue <https://github.com/fmtlib/fmt/issues>`_.
+
+Motivation
+----------
+
+So why yet another formatting library?
+
+There are plenty of methods for doing this task, from standard ones like
+the printf family of function and iostreams to Boost Format and FastFormat
+libraries. The reason for creating a new library is that every existing
+solution that I found either had serious issues or didn't provide
+all the features I needed.
+
+printf
+~~~~~~
+
+The good thing about ``printf`` is that it is pretty fast and readily available
+being a part of the C standard library. The main drawback is that it
+doesn't support user-defined types. ``printf`` also has safety issues although
+they are somewhat mitigated with `__attribute__ ((format (printf, ...))
+<https://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html>`_ in GCC.
+There is a POSIX extension that adds positional arguments required for
+`i18n <https://en.wikipedia.org/wiki/Internationalization_and_localization>`_
+to ``printf`` but it is not a part of C99 and may not be available on some
+platforms.
+
+iostreams
+~~~~~~~~~
+
+The main issue with iostreams is best illustrated with an example:
+
+.. code:: c++
+
+    std::cout << std::setprecision(2) << std::fixed << 1.23456 << "\n";
+
+which is a lot of typing compared to printf:
+
+.. code:: c++
+
+    printf("%.2f\n", 1.23456);
+
+Matthew Wilson, the author of FastFormat, called this "chevron hell". iostreams
+don't support positional arguments by design.
+
+The good part is that iostreams support user-defined types and are safe although
+error handling is awkward.
+
+Boost Format
+~~~~~~~~~~~~
+
+This is a very powerful library which supports both ``printf``-like format
+strings and positional arguments. Its main drawback is performance. According to
+various benchmarks, it is much slower than other methods considered here. Boost
+Format also has excessive build times and severe code bloat issues (see
+`Benchmarks`_).
+
+FastFormat
+~~~~~~~~~~
+
+This is an interesting library which is fast, safe and has positional arguments.
+However, it has significant limitations, citing its author:
+
+    Three features that have no hope of being accommodated within the
+    current design are:
+
+    * Leading zeros (or any other non-space padding)
+    * Octal/hexadecimal encoding
+    * Runtime width/alignment specification
+
+It is also quite big and has a heavy dependency, STLSoft, which might be too
+restrictive for using it in some projects.
+
+Boost Spirit.Karma
+~~~~~~~~~~~~~~~~~~
+
+This is not really a formatting library but I decided to include it here for
+completeness. As iostreams, it suffers from the problem of mixing verbatim text
+with arguments. The library is pretty fast, but slower on integer formatting
+than ``fmt::format_to`` with format string compilation on Karma's own benchmark,
+see `Converting a hundred million integers to strings per second
+<http://www.zverovich.net/2020/06/13/fast-int-to-string-revisited.html>`_.
+
+License
+-------
+
+{fmt} is distributed under the MIT `license
+<https://github.com/fmtlib/fmt/blob/master/LICENSE.rst>`_.
+
+Documentation License
+---------------------
+
+The `Format String Syntax <https://fmt.dev/latest/syntax.html>`_
+section in the documentation is based on the one from Python `string module
+documentation <https://docs.python.org/3/library/string.html#module-string>`_.
+For this reason the documentation is distributed under the Python Software
+Foundation license available in `doc/python-license.txt
+<https://raw.github.com/fmtlib/fmt/master/doc/python-license.txt>`_.
+It only applies if you distribute the documentation of {fmt}.
+
+Maintainers
+-----------
+
+The {fmt} library is maintained by Victor Zverovich (`vitaut
+<https://github.com/vitaut>`_) and Jonathan Müller (`foonathan
+<https://github.com/foonathan>`_) with contributions from many other people.
+See `Contributors <https://github.com/fmtlib/fmt/graphs/contributors>`_ and
+`Releases <https://github.com/fmtlib/fmt/releases>`_ for some of the names.
+Let us know if your contribution is not listed or mentioned incorrectly and
+we'll make it right.

src/libs/fmt/doc/CMakeLists.txt

@@ -0,0 +1,26 @@
+find_program(DOXYGEN doxygen
+  PATHS "$ENV{ProgramFiles}/doxygen/bin"
+        "$ENV{ProgramFiles\(x86\)}/doxygen/bin")
+if (NOT DOXYGEN)
+  message(STATUS "Target 'doc' disabled (requires doxygen)")
+  return ()
+endif ()
+
+# Find the Python interpreter and set the PYTHON_EXECUTABLE variable.
+if (CMAKE_VERSION VERSION_LESS 3.12)
+  # This logic is deprecated in CMake after 3.12.
+  find_package(PythonInterp QUIET REQUIRED)
+else ()
+  find_package(Python QUIET REQUIRED)
+  set(PYTHON_EXECUTABLE ${Python_EXECUTABLE})
+endif ()
+
+add_custom_target(doc
+  COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/build.py
+                               ${FMT_VERSION}
+  SOURCES api.rst syntax.rst usage.rst build.py conf.py _templates/layout.html)
+
+include(GNUInstallDirs)
+install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/html/
+        DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/doc/fmt OPTIONAL
+        PATTERN ".doctrees" EXCLUDE)

src/libs/fmt/doc/_static/breathe.css

@@ -0,0 +1,28 @@
+
+/* -- breathe specific styles ----------------------------------------------- */
+
+/* So enum value descriptions are displayed inline to the item */
+.breatheenumvalues li tt + p {
+  display: inline;
+}
+
+/* So parameter descriptions are displayed inline to the item */
+.breatheparameterlist li tt + p {
+  display: inline;
+}
+
+.container .breathe-sectiondef {
+  width: inherit;
+}
+
+.github-btn {
+  border: 0;
+  overflow: hidden;
+}
+
+.jumbotron {
+  background-size: 100% 4px;
+  background-repeat: repeat-y;
+  color: white;
+  text-align: center;
+}

src/libs/fmt/doc/_static/fonts/glyphicons-halflings-regular.svg

@@ -0,0 +1,229 @@
+<?xml version="1.0" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd" >
+<svg xmlns="http://www.w3.org/2000/svg">
+<metadata></metadata>
+<defs>
+<font id="glyphicons_halflingsregular" horiz-adv-x="1200" >
+<font-face units-per-em="1200" ascent="960" descent="-240" />
+<missing-glyph horiz-adv-x="500" />
+<glyph />
+<glyph />
+<glyph unicode="&#xd;" />
+<glyph unicode=" " />
+<glyph unicode="*" d="M100 500v200h259l-183 183l141 141l183 -183v259h200v-259l183 183l141 -141l-183 -183h259v-200h-259l183 -183l-141 -141l-183 183v-259h-200v259l-183 -183l-141 141l183 183h-259z" />
+<glyph unicode="+" d="M0 400v300h400v400h300v-400h400v-300h-400v-400h-300v400h-400z" />
+<glyph unicode="&#xa0;" />
+<glyph unicode="&#x2000;" horiz-adv-x="652" />
+<glyph unicode="&#x2001;" horiz-adv-x="1304" />
+<glyph unicode="&#x2002;" horiz-adv-x="652" />
+<glyph unicode="&#x2003;" horiz-adv-x="1304" />
+<glyph unicode="&#x2004;" horiz-adv-x="434" />
+<glyph unicode="&#x2005;" horiz-adv-x="326" />
+<glyph unicode="&#x2006;" horiz-adv-x="217" />
+<glyph unicode="&#x2007;" horiz-adv-x="217" />
+<glyph unicode="&#x2008;" horiz-adv-x="163" />
+<glyph unicode="&#x2009;" horiz-adv-x="260" />
+<glyph unicode="&#x200a;" horiz-adv-x="72" />
+<glyph unicode="&#x202f;" horiz-adv-x="260" />
+<glyph unicode="&#x205f;" horiz-adv-x="326" />
+<glyph unicode="&#x20ac;" d="M100 500l100 100h113q0 47 5 100h-218l100 100h135q37 167 112 257q117 141 297 141q242 0 354 -189q60 -103 66 -209h-181q0 55 -25.5 99t-63.5 68t-75 36.5t-67 12.5q-24 0 -52.5 -10t-62.5 -32t-65.5 -67t-50.5 -107h379l-100 -100h-300q-6 -46 -6 -100h406l-100 -100 h-300q9 -74 33 -132t52.5 -91t62 -54.5t59 -29t46.5 -7.5q29 0 66 13t75 37t63.5 67.5t25.5 96.5h174q-31 -172 -128 -278q-107 -117 -274 -117q-205 0 -324 158q-36 46 -69 131.5t-45 205.5h-217z" />
+<glyph unicode="&#x2212;" d="M200 400h900v300h-900v-300z" />
+<glyph unicode="&#x25fc;" horiz-adv-x="500" d="M0 0z" />
+<glyph unicode="&#x2601;" d="M-14 494q0 -80 56.5 -137t135.5 -57h750q120 0 205 86.5t85 207.5t-85 207t-205 86q-46 0 -90 -14q-44 97 -134.5 156.5t-200.5 59.5q-152 0 -260 -107.5t-108 -260.5q0 -25 2 -37q-66 -14 -108.5 -67.5t-42.5 -122.5z" />
+<glyph unicode="&#x2709;" d="M0 100l400 400l200 -200l200 200l400 -400h-1200zM0 300v600l300 -300zM0 1100l600 -603l600 603h-1200zM900 600l300 300v-600z" />
+<glyph unicode="&#x270f;" d="M-13 -13l333 112l-223 223zM187 403l214 -214l614 614l-214 214zM887 1103l214 -214l99 92q13 13 13 32.5t-13 33.5l-153 153q-15 13 -33 13t-33 -13z" />
+<glyph unicode="&#xe001;" d="M0 1200h1200l-500 -550v-550h300v-100h-800v100h300v550z" />
+<glyph unicode="&#xe002;" d="M14 84q18 -55 86 -75.5t147 5.5q65 21 109 69t44 90v606l600 155v-521q-64 16 -138 -7q-79 -26 -122.5 -83t-25.5 -111q18 -55 86 -75.5t147 4.5q70 23 111.5 63.5t41.5 95.5v881q0 10 -7 15.5t-17 2.5l-752 -193q-10 -3 -17 -12.5t-7 -19.5v-689q-64 17 -138 -7 q-79 -25 -122.5 -82t-25.5 -112z" />
+<glyph unicode="&#xe003;" d="M23 693q0 200 142 342t342 142t342 -142t142 -342q0 -142 -78 -261l300 -300q7 -8 7 -18t-7 -18l-109 -109q-8 -7 -18 -7t-18 7l-300 300q-119 -78 -261 -78q-200 0 -342 142t-142 342zM176 693q0 -136 97 -233t234 -97t233.5 96.5t96.5 233.5t-96.5 233.5t-233.5 96.5 t-234 -97t-97 -233z" />
+<glyph unicode="&#xe005;" d="M100 784q0 64 28 123t73 100.5t104.5 64t119 20.5t120 -38.5t104.5 -104.5q48 69 109.5 105t121.5 38t118.5 -20.5t102.5 -64t71 -100.5t27 -123q0 -57 -33.5 -117.5t-94 -124.5t-126.5 -127.5t-150 -152.5t-146 -174q-62 85 -145.5 174t-149.5 152.5t-126.5 127.5 t-94 124.5t-33.5 117.5z" />
+<glyph unicode="&#xe006;" d="M-72 800h479l146 400h2l146 -400h472l-382 -278l145 -449l-384 275l-382 -275l146 447zM168 71l2 1z" />
+<glyph unicode="&#xe007;" d="M-72 800h479l146 400h2l146 -400h472l-382 -278l145 -449l-384 275l-382 -275l146 447zM168 71l2 1zM237 700l196 -142l-73 -226l192 140l195 -141l-74 229l193 140h-235l-77 211l-78 -211h-239z" />
+<glyph unicode="&#xe008;" d="M0 0v143l400 257v100q-37 0 -68.5 74.5t-31.5 125.5v200q0 124 88 212t212 88t212 -88t88 -212v-200q0 -51 -31.5 -125.5t-68.5 -74.5v-100l400 -257v-143h-1200z" />
+<glyph unicode="&#xe009;" d="M0 0v1100h1200v-1100h-1200zM100 100h100v100h-100v-100zM100 300h100v100h-100v-100zM100 500h100v100h-100v-100zM100 700h100v100h-100v-100zM100 900h100v100h-100v-100zM300 100h600v400h-600v-400zM300 600h600v400h-600v-400zM1000 100h100v100h-100v-100z M1000 300h100v100h-100v-100zM1000 500h100v100h-100v-100zM1000 700h100v100h-100v-100zM1000 900h100v100h-100v-100z" />
+<glyph unicode="&#xe010;" d="M0 50v400q0 21 14.5 35.5t35.5 14.5h400q21 0 35.5 -14.5t14.5 -35.5v-400q0 -21 -14.5 -35.5t-35.5 -14.5h-400q-21 0 -35.5 14.5t-14.5 35.5zM0 650v400q0 21 14.5 35.5t35.5 14.5h400q21 0 35.5 -14.5t14.5 -35.5v-400q0 -21 -14.5 -35.5t-35.5 -14.5h-400 q-21 0 -35.5 14.5t-14.5 35.5zM600 50v400q0 21 14.5 35.5t35.5 14.5h400q21 0 35.5 -14.5t14.5 -35.5v-400q0 -21 -14.5 -35.5t-35.5 -14.5h-400q-21 0 -35.5 14.5t-14.5 35.5zM600 650v400q0 21 14.5 35.5t35.5 14.5h400q21 0 35.5 -14.5t14.5 -35.5v-400 q0 -21 -14.5 -35.5t-35.5 -14.5h-400q-21 0 -35.5 14.5t-14.5 35.5z" />
+<glyph unicode="&#xe011;" d="M0 50v200q0 21 14.5 35.5t35.5 14.5h200q21 0 35.5 -14.5t14.5 -35.5v-200q0 -21 -14.5 -35.5t-35.5 -14.5h-200q-21 0 -35.5 14.5t-14.5 35.5zM0 450v200q0 21 14.5 35.5t35.5 14.5h200q21 0 35.5 -14.5t14.5 -35.5v-200q0 -21 -14.5 -35.5t-35.5 -14.5h-200 q-21 0 -35.5 14.5t-14.5 35.5zM0 850v200q0 21 14.5 35.5t35.5 14.5h200q21 0 35.5 -14.5t14.5 -35.5v-200q0 -21 -14.5 -35.5t-35.5 -14.5h-200q-21 0 -35.5 14.5t-14.5 35.5zM400 50v200q0 21 14.5 35.5t35.5 14.5h200q21 0 35.5 -14.5t14.5 -35.5v-200q0 -21 -14.5 -35.5 t-35.5 -14.5h-200q-21 0 -35.5 14.5t-14.5 35.5zM400 450v200q0 21 14.5 35.5t35.5 14.5h200q21 0 35.5 -14.5t14.5 -35.5v-200q0 -21 -14.5 -35.5t-35.5 -14.5h-200q-21 0 -35.5 14.5t-14.5 35.5zM400 850v200q0 21 14.5 35.5t35.5 14.5h200q21 0 35.5 -14.5t14.5 -35.5 v-200q0 -21 -14.5 -35.5t-35.5 -14.5h-200q-21 0 -35.5 14.5t-14.5 35.5zM800 50v200q0 21 14.5 35.5t35.5 14.5h200q21 0 35.5 -14.5t14.5 -35.5v-200q0 -21 -14.5 -35.5t-35.5 -14.5h-200q-21 0 -35.5 14.5t-14.5 35.5zM800 450v200q0 21 14.5 35.5t35.5 14.5h200 q21 0 35.5 -14.5t14.5 -35.5v-200q0 -21 -14.5 -35.5t-35.5 -14.5h-200q-21 0 -35.5 14.5t-14.5 35.5zM800 850v200q0 21 14.5 35.5t35.5 14.5h200q21 0 35.5 -14.5t14.5 -35.5v-200q0 -21 -14.5 -35.5t-35.5 -14.5h-200q-21 0 -35.5 14.5t-14.5 35.5z" />
+<glyph unicode="&#xe012;" d="M0 50v200q0 21 14.5 35.5t35.5 14.5h200q21 0 35.5 -14.5t14.5 -35.5v-200q0 -21 -14.5 -35.5t-35.5 -14.5h-200q-21 0 -35.5 14.5t-14.5 35.5zM0 450q0 -21 14.5 -35.5t35.5 -14.5h200q21 0 35.5 14.5t14.5 35.5v200q0 21 -14.5 35.5t-35.5 14.5h-200q-21 0 -35.5 -14.5 t-14.5 -35.5v-200zM0 850v200q0 21 14.5 35.5t35.5 14.5h200q21 0 35.5 -14.5t14.5 -35.5v-200q0 -21 -14.5 -35.5t-35.5 -14.5h-200q-21 0 -35.5 14.5t-14.5 35.5zM400 50v200q0 21 14.5 35.5t35.5 14.5h700q21 0 35.5 -14.5t14.5 -35.5v-200q0 -21 -14.5 -35.5 t-35.5 -14.5h-700q-21 0 -35.5 14.5t-14.5 35.5zM400 450v200q0 21 14.5 35.5t35.5 14.5h700q21 0 35.5 -14.5t14.5 -35.5v-200q0 -21 -14.5 -35.5t-35.5 -14.5h-700q-21 0 -35.5 14.5t-14.5 35.5zM400 850v200q0 21 14.5 35.5t35.5 14.5h700q21 0 35.5 -14.5t14.5 -35.5 v-200q0 -21 -14.5 -35.5t-35.5 -14.5h-700q-21 0 -35.5 14.5t-14.5 35.5z" />
+<glyph unicode="&#xe013;" d="M29 454l419 -420l818 820l-212 212l-607 -607l-206 207z" />
+<glyph unicode="&#xe014;" d="M106 318l282 282l-282 282l212 212l282 -282l282 282l212 -212l-282 -282l282 -282l-212 -212l-282 282l-282 -282z" />
+<glyph unicode="&#xe015;" d="M23 693q0 200 142 342t342 142t342 -142t142 -342q0 -142 -78 -261l300 -300q7 -8 7 -18t-7 -18l-109 -109q-8 -7 -18 -7t-18 7l-300 300q-119 -78 -261 -78q-200 0 -342 142t-142 342zM176 693q0 -136 97 -233t234 -97t233.5 96.5t96.5 233.5t-96.5 233.5t-233.5 96.5 t-234 -97t-97 -233zM300 600v200h100v100h200v-100h100v-200h-100v-100h-200v100h-100z" />
+<glyph unicode="&#xe016;" d="M23 694q0 200 142 342t342 142t342 -142t142 -342q0 -141 -78 -262l300 -299q7 -7 7 -18t-7 -18l-109 -109q-8 -8 -18 -8t-18 8l-300 300q-119 -78 -261 -78q-200 0 -342 142t-142 342zM176 694q0 -136 97 -233t234 -97t233.5 97t96.5 233t-96.5 233t-233.5 97t-234 -97 t-97 -233zM300 601h400v200h-400v-200z" />
+<glyph unicode="&#xe017;" d="M23 600q0 183 105 331t272 210v-166q-103 -55 -165 -155t-62 -220q0 -177 125 -302t302 -125t302 125t125 302q0 120 -62 220t-165 155v166q167 -62 272 -210t105 -331q0 -118 -45.5 -224.5t-123 -184t-184 -123t-224.5 -45.5t-224.5 45.5t-184 123t-123 184t-45.5 224.5 zM500 750q0 -21 14.5 -35.5t35.5 -14.5h100q21 0 35.5 14.5t14.5 35.5v400q0 21 -14.5 35.5t-35.5 14.5h-100q-21 0 -35.5 -14.5t-14.5 -35.5v-400z" />
+<glyph unicode="&#xe018;" d="M100 1h200v300h-200v-300zM400 1v500h200v-500h-200zM700 1v800h200v-800h-200zM1000 1v1200h200v-1200h-200z" />
+<glyph unicode="&#xe019;" d="M26 601q0 -33 6 -74l151 -38l2 -6q14 -49 38 -93l3 -5l-80 -134q45 -59 105 -105l133 81l5 -3q45 -26 94 -39l5 -2l38 -151q40 -5 74 -5q27 0 74 5l38 151l6 2q46 13 93 39l5 3l134 -81q56 44 104 105l-80 134l3 5q24 44 39 93l1 6l152 38q5 40 5 74q0 28 -5 73l-152 38 l-1 6q-16 51 -39 93l-3 5l80 134q-44 58 -104 105l-134 -81l-5 3q-45 25 -93 39l-6 1l-38 152q-40 5 -74 5q-27 0 -74 -5l-38 -152l-5 -1q-50 -14 -94 -39l-5 -3l-133 81q-59 -47 -105 -105l80 -134l-3 -5q-25 -47 -38 -93l-2 -6l-151 -38q-6 -48 -6 -73zM385 601 q0 88 63 151t152 63t152 -63t63 -151q0 -89 -63 -152t-152 -63t-152 63t-63 152z" />
+<glyph unicode="&#xe020;" d="M100 1025v50q0 10 7.5 17.5t17.5 7.5h275v100q0 41 29.5 70.5t70.5 29.5h300q41 0 70.5 -29.5t29.5 -70.5v-100h275q10 0 17.5 -7.5t7.5 -17.5v-50q0 -11 -7 -18t-18 -7h-1050q-11 0 -18 7t-7 18zM200 100v800h900v-800q0 -41 -29.5 -71t-70.5 -30h-700q-41 0 -70.5 30 t-29.5 71zM300 100h100v700h-100v-700zM500 100h100v700h-100v-700zM500 1100h300v100h-300v-100zM700 100h100v700h-100v-700zM900 100h100v700h-100v-700z" />
+<glyph unicode="&#xe021;" d="M1 601l656 644l644 -644h-200v-600h-300v400h-300v-400h-300v600h-200z" />
+<glyph unicode="&#xe022;" d="M100 25v1150q0 11 7 18t18 7h475v-500h400v-675q0 -11 -7 -18t-18 -7h-850q-11 0 -18 7t-7 18zM700 800v300l300 -300h-300z" />
+<glyph unicode="&#xe023;" d="M4 600q0 162 80 299t217 217t299 80t299 -80t217 -217t80 -299t-80 -299t-217 -217t-299 -80t-299 80t-217 217t-80 299zM186 600q0 -171 121.5 -292.5t292.5 -121.5t292.5 121.5t121.5 292.5t-121.5 292.5t-292.5 121.5t-292.5 -121.5t-121.5 -292.5zM500 500v400h100 v-300h200v-100h-300z" />
+<glyph unicode="&#xe024;" d="M-100 0l431 1200h209l-21 -300h162l-20 300h208l431 -1200h-538l-41 400h-242l-40 -400h-539zM488 500h224l-27 300h-170z" />
+<glyph unicode="&#xe025;" d="M0 0v400h490l-290 300h200v500h300v-500h200l-290 -300h490v-400h-1100zM813 200h175v100h-175v-100z" />
+<glyph unicode="&#xe026;" d="M1 600q0 122 47.5 233t127.5 191t191 127.5t233 47.5t233 -47.5t191 -127.5t127.5 -191t47.5 -233t-47.5 -233t-127.5 -191t-191 -127.5t-233 -47.5t-233 47.5t-191 127.5t-127.5 191t-47.5 233zM188 600q0 -170 121 -291t291 -121t291 121t121 291t-121 291t-291 121 t-291 -121t-121 -291zM350 600h150v300h200v-300h150l-250 -300z" />
+<glyph unicode="&#xe027;" d="M4 600q0 162 80 299t217 217t299 80t299 -80t217 -217t80 -299t-80 -299t-217 -217t-299 -80t-299 80t-217 217t-80 299zM186 600q0 -171 121.5 -292.5t292.5 -121.5t292.5 121.5t121.5 292.5t-121.5 292.5t-292.5 121.5t-292.5 -121.5t-121.5 -292.5zM350 600l250 300 l250 -300h-150v-300h-200v300h-150z" />
+<glyph unicode="&#xe028;" d="M0 25v475l200 700h800l199 -700l1 -475q0 -11 -7 -18t-18 -7h-1150q-11 0 -18 7t-7 18zM200 500h200l50 -200h300l50 200h200l-97 500h-606z" />
+<glyph unicode="&#xe029;" d="M4 600q0 162 80 299t217 217t299 80t299 -80t217 -217t80 -299t-80 -299t-217 -217t-299 -80t-299 80t-217 217t-80 299zM186 600q0 -172 121.5 -293t292.5 -121t292.5 121t121.5 293q0 171 -121.5 292.5t-292.5 121.5t-292.5 -121.5t-121.5 -292.5zM500 397v401 l297 -200z" />
+<glyph unicode="&#xe030;" d="M23 600q0 -118 45.5 -224.5t123 -184t184 -123t224.5 -45.5t224.5 45.5t184 123t123 184t45.5 224.5h-150q0 -177 -125 -302t-302 -125t-302 125t-125 302t125 302t302 125q136 0 246 -81l-146 -146h400v400l-145 -145q-157 122 -355 122q-118 0 -224.5 -45.5t-184 -123 t-123 -184t-45.5 -224.5z" />
+<glyph unicode="&#xe031;" d="M23 600q0 118 45.5 224.5t123 184t184 123t224.5 45.5q198 0 355 -122l145 145v-400h-400l147 147q-112 80 -247 80q-177 0 -302 -125t-125 -302h-150zM100 0v400h400l-147 -147q112 -80 247 -80q177 0 302 125t125 302h150q0 -118 -45.5 -224.5t-123 -184t-184 -123 t-224.5 -45.5q-198 0 -355 122z" />
+<glyph unicode="&#xe032;" d="M100 0h1100v1200h-1100v-1200zM200 100v900h900v-900h-900zM300 200v100h100v-100h-100zM300 400v100h100v-100h-100zM300 600v100h100v-100h-100zM300 800v100h100v-100h-100zM500 200h500v100h-500v-100zM500 400v100h500v-100h-500zM500 600v100h500v-100h-500z M500 800v100h500v-100h-500z" />
+<glyph unicode="&#xe033;" d="M0 100v600q0 41 29.5 70.5t70.5 29.5h100v200q0 82 59 141t141 59h300q82 0 141 -59t59 -141v-200h100q41 0 70.5 -29.5t29.5 -70.5v-600q0 -41 -29.5 -70.5t-70.5 -29.5h-900q-41 0 -70.5 29.5t-29.5 70.5zM400 800h300v150q0 21 -14.5 35.5t-35.5 14.5h-200 q-21 0 -35.5 -14.5t-14.5 -35.5v-150z" />
+<glyph unicode="&#xe034;" d="M100 0v1100h100v-1100h-100zM300 400q60 60 127.5 84t127.5 17.5t122 -23t119 -30t110 -11t103 42t91 120.5v500q-40 -81 -101.5 -115.5t-127.5 -29.5t-138 25t-139.5 40t-125.5 25t-103 -29.5t-65 -115.5v-500z" />
+<glyph unicode="&#xe035;" d="M0 275q0 -11 7 -18t18 -7h50q11 0 18 7t7 18v300q0 127 70.5 231.5t184.5 161.5t245 57t245 -57t184.5 -161.5t70.5 -231.5v-300q0 -11 7 -18t18 -7h50q11 0 18 7t7 18v300q0 116 -49.5 227t-131 192.5t-192.5 131t-227 49.5t-227 -49.5t-192.5 -131t-131 -192.5 t-49.5 -227v-300zM200 20v460q0 8 6 14t14 6h160q8 0 14 -6t6 -14v-460q0 -8 -6 -14t-14 -6h-160q-8 0 -14 6t-6 14zM800 20v460q0 8 6 14t14 6h160q8 0 14 -6t6 -14v-460q0 -8 -6 -14t-14 -6h-160q-8 0 -14 6t-6 14z" />
+<glyph unicode="&#xe036;" d="M0 400h300l300 -200v800l-300 -200h-300v-400zM688 459l141 141l-141 141l71 71l141 -141l141 141l71 -71l-141 -141l141 -141l-71 -71l-141 141l-141 -141z" />
+<glyph unicode="&#xe037;" d="M0 400h300l300 -200v800l-300 -200h-300v-400zM700 857l69 53q111 -135 111 -310q0 -169 -106 -302l-67 54q86 110 86 248q0 146 -93 257z" />
+<glyph unicode="&#xe038;" d="M0 401v400h300l300 200v-800l-300 200h-300zM702 858l69 53q111 -135 111 -310q0 -170 -106 -303l-67 55q86 110 86 248q0 145 -93 257zM889 951l7 -8q123 -151 123 -344q0 -189 -119 -339l-7 -8l81 -66l6 8q142 178 142 405q0 230 -144 408l-6 8z" />
+<glyph unicode="&#xe039;" d="M0 0h500v500h-200v100h-100v-100h-200v-500zM0 600h100v100h400v100h100v100h-100v300h-500v-600zM100 100v300h300v-300h-300zM100 800v300h300v-300h-300zM200 200v100h100v-100h-100zM200 900h100v100h-100v-100zM500 500v100h300v-300h200v-100h-100v-100h-200v100 h-100v100h100v200h-200zM600 0v100h100v-100h-100zM600 1000h100v-300h200v-300h300v200h-200v100h200v500h-600v-200zM800 800v300h300v-300h-300zM900 0v100h300v-100h-300zM900 900v100h100v-100h-100zM1100 200v100h100v-100h-100z" />
+<glyph unicode="&#xe040;" d="M0 200h100v1000h-100v-1000zM100 0v100h300v-100h-300zM200 200v1000h100v-1000h-100zM500 0v91h100v-91h-100zM500 200v1000h200v-1000h-200zM700 0v91h100v-91h-100zM800 200v1000h100v-1000h-100zM900 0v91h200v-91h-200zM1000 200v1000h200v-1000h-200z" />
+<glyph unicode="&#xe041;" d="M0 700l1 475q0 10 7.5 17.5t17.5 7.5h474l700 -700l-500 -500zM148 953q0 -42 29 -71q30 -30 71.5 -30t71.5 30q29 29 29 71t-29 71q-30 30 -71.5 30t-71.5 -30q-29 -29 -29 -71z" />
+<glyph unicode="&#xe042;" d="M1 700l1 475q0 11 7 18t18 7h474l700 -700l-500 -500zM148 953q0 -42 30 -71q29 -30 71 -30t71 30q30 29 30 71t-30 71q-29 30 -71 30t-71 -30q-30 -29 -30 -71zM701 1200h100l700 -700l-500 -500l-50 50l450 450z" />
+<glyph unicode="&#xe043;" d="M100 0v1025l175 175h925v-1000l-100 -100v1000h-750l-100 -100h750v-1000h-900z" />
+<glyph unicode="&#xe044;" d="M200 0l450 444l450 -443v1150q0 20 -14.5 35t-35.5 15h-800q-21 0 -35.5 -15t-14.5 -35v-1151z" />
+<glyph unicode="&#xe045;" d="M0 100v700h200l100 -200h600l100 200h200v-700h-200v200h-800v-200h-200zM253 829l40 -124h592l62 124l-94 346q-2 11 -10 18t-18 7h-450q-10 0 -18 -7t-10 -18zM281 24l38 152q2 10 11.5 17t19.5 7h500q10 0 19.5 -7t11.5 -17l38 -152q2 -10 -3.5 -17t-15.5 -7h-600 q-10 0 -15.5 7t-3.5 17z" />
+<glyph unicode="&#xe046;" d="M0 200q0 -41 29.5 -70.5t70.5 -29.5h1000q41 0 70.5 29.5t29.5 70.5v600q0 41 -29.5 70.5t-70.5 29.5h-150q-4 8 -11.5 21.5t-33 48t-53 61t-69 48t-83.5 21.5h-200q-41 0 -82 -20.5t-70 -50t-52 -59t-34 -50.5l-12 -20h-150q-41 0 -70.5 -29.5t-29.5 -70.5v-600z M356 500q0 100 72 172t172 72t172 -72t72 -172t-72 -172t-172 -72t-172 72t-72 172zM494 500q0 -44 31 -75t75 -31t75 31t31 75t-31 75t-75 31t-75 -31t-31 -75zM900 700v100h100v-100h-100z" />
+<glyph unicode="&#xe047;" d="M53 0h365v66q-41 0 -72 11t-49 38t1 71l92 234h391l82 -222q16 -45 -5.5 -88.5t-74.5 -43.5v-66h417v66q-34 1 -74 43q-18 19 -33 42t-21 37l-6 13l-385 998h-93l-399 -1006q-24 -48 -52 -75q-12 -12 -33 -25t-36 -20l-15 -7v-66zM416 521l178 457l46 -140l116 -317h-340 z" />
+<glyph unicode="&#xe048;" d="M100 0v89q41 7 70.5 32.5t29.5 65.5v827q0 28 -1 39.5t-5.5 26t-15.5 21t-29 14t-49 14.5v71l471 -1q120 0 213 -88t93 -228q0 -55 -11.5 -101.5t-28 -74t-33.5 -47.5t-28 -28l-12 -7q8 -3 21.5 -9t48 -31.5t60.5 -58t47.5 -91.5t21.5 -129q0 -84 -59 -156.5t-142 -111 t-162 -38.5h-500zM400 200h161q89 0 153 48.5t64 132.5q0 90 -62.5 154.5t-156.5 64.5h-159v-400zM400 700h139q76 0 130 61.5t54 138.5q0 82 -84 130.5t-239 48.5v-379z" />
+<glyph unicode="&#xe049;" d="M200 0v57q77 7 134.5 40.5t65.5 80.5l173 849q10 56 -10 74t-91 37q-6 1 -10.5 2.5t-9.5 2.5v57h425l2 -57q-33 -8 -62 -25.5t-46 -37t-29.5 -38t-17.5 -30.5l-5 -12l-128 -825q-10 -52 14 -82t95 -36v-57h-500z" />
+<glyph unicode="&#xe050;" d="M-75 200h75v800h-75l125 167l125 -167h-75v-800h75l-125 -167zM300 900v300h150h700h150v-300h-50q0 29 -8 48.5t-18.5 30t-33.5 15t-39.5 5.5t-50.5 1h-200v-850l100 -50v-100h-400v100l100 50v850h-200q-34 0 -50.5 -1t-40 -5.5t-33.5 -15t-18.5 -30t-8.5 -48.5h-49z " />
+<glyph unicode="&#xe051;" d="M33 51l167 125v-75h800v75l167 -125l-167 -125v75h-800v-75zM100 901v300h150h700h150v-300h-50q0 29 -8 48.5t-18 30t-33.5 15t-40 5.5t-50.5 1h-200v-650l100 -50v-100h-400v100l100 50v650h-200q-34 0 -50.5 -1t-39.5 -5.5t-33.5 -15t-18.5 -30t-8 -48.5h-50z" />
+<glyph unicode="&#xe052;" d="M0 50q0 -20 14.5 -35t35.5 -15h1100q21 0 35.5 15t14.5 35v100q0 21 -14.5 35.5t-35.5 14.5h-1100q-21 0 -35.5 -14.5t-14.5 -35.5v-100zM0 350q0 -20 14.5 -35t35.5 -15h800q21 0 35.5 15t14.5 35v100q0 21 -14.5 35.5t-35.5 14.5h-800q-21 0 -35.5 -14.5t-14.5 -35.5 v-100zM0 650q0 -20 14.5 -35t35.5 -15h1000q21 0 35.5 15t14.5 35v100q0 21 -14.5 35.5t-35.5 14.5h-1000q-21 0 -35.5 -14.5t-14.5 -35.5v-100zM0 950q0 -20 14.5 -35t35.5 -15h600q21 0 35.5 15t14.5 35v100q0 21 -14.5 35.5t-35.5 14.5h-600q-21 0 -35.5 -14.5 t-14.5 -35.5v-100z" />
+<glyph unicode="&#xe053;" d="M0 50q0 -20 14.5 -35t35.5 -15h1100q21 0 35.5 15t14.5 35v100q0 21 -14.5 35.5t-35.5 14.5h-1100q-21 0 -35.5 -14.5t-14.5 -35.5v-100zM0 650q0 -20 14.5 -35t35.5 -15h1100q21 0 35.5 15t14.5 35v100q0 21 -14.5 35.5t-35.5 14.5h-1100q-21 0 -35.5 -14.5t-14.5 -35.5 v-100zM200 350q0 -20 14.5 -35t35.5 -15h700q21 0 35.5 15t14.5 35v100q0 21 -14.5 35.5t-35.5 14.5h-700q-21 0 -35.5 -14.5t-14.5 -35.5v-100zM200 950q0 -20 14.5 -35t35.5 -15h700q21 0 35.5 15t14.5 35v100q0 21 -14.5 35.5t-35.5 14.5h-700q-21 0 -35.5 -14.5 t-14.5 -35.5v-100z" />
+<glyph unicode="&#xe054;" d="M0 50v100q0 21 14.5 35.5t35.5 14.5h1100q21 0 35.5 -14.5t14.5 -35.5v-100q0 -20 -14.5 -35t-35.5 -15h-1100q-21 0 -35.5 15t-14.5 35zM100 650v100q0 21 14.5 35.5t35.5 14.5h1000q21 0 35.5 -14.5t14.5 -35.5v-100q0 -20 -14.5 -35t-35.5 -15h-1000q-21 0 -35.5 15 t-14.5 35zM300 350v100q0 21 14.5 35.5t35.5 14.5h800q21 0 35.5 -14.5t14.5 -35.5v-100q0 -20 -14.5 -35t-35.5 -15h-800q-21 0 -35.5 15t-14.5 35zM500 950v100q0 21 14.5 35.5t35.5 14.5h600q21 0 35.5 -14.5t14.5 -35.5v-100q0 -20 -14.5 -35t-35.5 -15h-600 q-21 0 -35.5 15t-14.5 35z" />
+<glyph unicode="&#xe055;" d="M0 50v100q0 21 14.5 35.5t35.5 14.5h1100q21 0 35.5 -14.5t14.5 -35.5v-100q0 -20 -14.5 -35t-35.5 -15h-1100q-21 0 -35.5 15t-14.5 35zM0 350v100q0 21 14.5 35.5t35.5 14.5h1100q21 0 35.5 -14.5t14.5 -35.5v-100q0 -20 -14.5 -35t-35.5 -15h-1100q-21 0 -35.5 15 t-14.5 35zM0 650v100q0 21 14.5 35.5t35.5 14.5h1100q21 0 35.5 -14.5t14.5 -35.5v-100q0 -20 -14.5 -35t-35.5 -15h-1100q-21 0 -35.5 15t-14.5 35zM0 950v100q0 21 14.5 35.5t35.5 14.5h1100q21 0 35.5 -14.5t14.5 -35.5v-100q0 -20 -14.5 -35t-35.5 -15h-1100 q-21 0 -35.5 15t-14.5 35z" />
+<glyph unicode="&#xe056;" d="M0 50v100q0 21 14.5 35.5t35.5 14.5h100q21 0 35.5 -14.5t14.5 -35.5v-100q0 -20 -14.5 -35t-35.5 -15h-100q-21 0 -35.5 15t-14.5 35zM0 350v100q0 21 14.5 35.5t35.5 14.5h100q21 0 35.5 -14.5t14.5 -35.5v-100q0 -20 -14.5 -35t-35.5 -15h-100q-21 0 -35.5 15 t-14.5 35zM0 650v100q0 21 14.5 35.5t35.5 14.5h100q21 0 35.5 -14.5t14.5 -35.5v-100q0 -20 -14.5 -35t-35.5 -15h-100q-21 0 -35.5 15t-14.5 35zM0 950v100q0 21 14.5 35.5t35.5 14.5h100q21 0 35.5 -14.5t14.5 -35.5v-100q0 -20 -14.5 -35t-35.5 -15h-100q-21 0 -35.5 15 t-14.5 35zM300 50v100q0 21 14.5 35.5t35.5 14.5h800q21 0 35.5 -14.5t14.5 -35.5v-100q0 -20 -14.5 -35t-35.5 -15h-800q-21 0 -35.5 15t-14.5 35zM300 350v100q0 21 14.5 35.5t35.5 14.5h800q21 0 35.5 -14.5t14.5 -35.5v-100q0 -20 -14.5 -35t-35.5 -15h-800 q-21 0 -35.5 15t-14.5 35zM300 650v100q0 21 14.5 35.5t35.5 14.5h800q21 0 35.5 -14.5t14.5 -35.5v-100q0 -20 -14.5 -35t-35.5 -15h-800q-21 0 -35.5 15t-14.5 35zM300 950v100q0 21 14.5 35.5t35.5 14.5h800q21 0 35.5 -14.5t14.5 -35.5v-100q0 -20 -14.5 -35t-35.5 -15 h-800q-21 0 -35.5 15t-14.5 35z" />
+<glyph unicode="&#xe057;" d="M-101 500v100h201v75l166 -125l-166 -125v75h-201zM300 0h100v1100h-100v-1100zM500 50q0 -20 14.5 -35t35.5 -15h600q20 0 35 15t15 35v100q0 21 -15 35.5t-35 14.5h-600q-21 0 -35.5 -14.5t-14.5 -35.5v-100zM500 350q0 -20 14.5 -35t35.5 -15h300q20 0 35 15t15 35 v100q0 21 -15 35.5t-35 14.5h-300q-21 0 -35.5 -14.5t-14.5 -35.5v-100zM500 650q0 -20 14.5 -35t35.5 -15h500q20 0 35 15t15 35v100q0 21 -15 35.5t-35 14.5h-500q-21 0 -35.5 -14.5t-14.5 -35.5v-100zM500 950q0 -20 14.5 -35t35.5 -15h100q20 0 35 15t15 35v100 q0 21 -15 35.5t-35 14.5h-100q-21 0 -35.5 -14.5t-14.5 -35.5v-100z" />
+<glyph unicode="&#xe058;" d="M1 50q0 -20 14.5 -35t35.5 -15h600q20 0 35 15t15 35v100q0 21 -15 35.5t-35 14.5h-600q-21 0 -35.5 -14.5t-14.5 -35.5v-100zM1 350q0 -20 14.5 -35t35.5 -15h300q20 0 35 15t15 35v100q0 21 -15 35.5t-35 14.5h-300q-21 0 -35.5 -14.5t-14.5 -35.5v-100zM1 650 q0 -20 14.5 -35t35.5 -15h500q20 0 35 15t15 35v100q0 21 -15 35.5t-35 14.5h-500q-21 0 -35.5 -14.5t-14.5 -35.5v-100zM1 950q0 -20 14.5 -35t35.5 -15h100q20 0 35 15t15 35v100q0 21 -15 35.5t-35 14.5h-100q-21 0 -35.5 -14.5t-14.5 -35.5v-100zM801 0v1100h100v-1100 h-100zM934 550l167 -125v75h200v100h-200v75z" />
+<glyph unicode="&#xe059;" d="M0 275v650q0 31 22 53t53 22h750q31 0 53 -22t22 -53v-650q0 -31 -22 -53t-53 -22h-750q-31 0 -53 22t-22 53zM900 600l300 300v-600z" />
+<glyph unicode="&#xe060;" d="M0 44v1012q0 18 13 31t31 13h1112q19 0 31.5 -13t12.5 -31v-1012q0 -18 -12.5 -31t-31.5 -13h-1112q-18 0 -31 13t-13 31zM100 263l247 182l298 -131l-74 156l293 318l236 -288v500h-1000v-737zM208 750q0 56 39 95t95 39t95 -39t39 -95t-39 -95t-95 -39t-95 39t-39 95z " />
+<glyph unicode="&#xe062;" d="M148 745q0 124 60.5 231.5t165 172t226.5 64.5q123 0 227 -63t164.5 -169.5t60.5 -229.5t-73 -272q-73 -114 -166.5 -237t-150.5 -189l-57 -66q-10 9 -27 26t-66.5 70.5t-96 109t-104 135.5t-100.5 155q-63 139 -63 262zM342 772q0 -107 75.5 -182.5t181.5 -75.5 q107 0 182.5 75.5t75.5 182.5t-75.5 182t-182.5 75t-182 -75.5t-75 -181.5z" />
+<glyph unicode="&#xe063;" d="M1 600q0 122 47.5 233t127.5 191t191 127.5t233 47.5t233 -47.5t191 -127.5t127.5 -191t47.5 -233t-47.5 -233t-127.5 -191t-191 -127.5t-233 -47.5t-233 47.5t-191 127.5t-127.5 191t-47.5 233zM173 600q0 -177 125.5 -302t301.5 -125v854q-176 0 -301.5 -125 t-125.5 -302z" />
+<glyph unicode="&#xe064;" d="M117 406q0 94 34 186t88.5 172.5t112 159t115 177t87.5 194.5q21 -71 57.5 -142.5t76 -130.5t83 -118.5t82 -117t70 -116t50 -125.5t18.5 -136q0 -89 -39 -165.5t-102 -126.5t-140 -79.5t-156 -33.5q-114 6 -211.5 53t-161.5 139t-64 210zM243 414q14 -82 59.5 -136 t136.5 -80l16 98q-7 6 -18 17t-34 48t-33 77q-15 73 -14 143.5t10 122.5l9 51q-92 -110 -119.5 -185t-12.5 -156z" />
+<glyph unicode="&#xe065;" d="M0 400v300q0 165 117.5 282.5t282.5 117.5q366 -6 397 -14l-186 -186h-311q-41 0 -70.5 -29.5t-29.5 -70.5v-500q0 -41 29.5 -70.5t70.5 -29.5h500q41 0 70.5 29.5t29.5 70.5v125l200 200v-225q0 -165 -117.5 -282.5t-282.5 -117.5h-300q-165 0 -282.5 117.5 t-117.5 282.5zM436 341l161 50l412 412l-114 113l-405 -405zM995 1015l113 -113l113 113l-21 85l-92 28z" />
+<glyph unicode="&#xe066;" d="M0 400v300q0 165 117.5 282.5t282.5 117.5h261l2 -80q-133 -32 -218 -120h-145q-41 0 -70.5 -29.5t-29.5 -70.5v-500q0 -41 29.5 -70.5t70.5 -29.5h500q41 0 70.5 29.5t29.5 70.5l200 153v-53q0 -165 -117.5 -282.5t-282.5 -117.5h-300q-165 0 -282.5 117.5t-117.5 282.5 zM423 524q30 38 81.5 64t103 35.5t99 14t77.5 3.5l29 -1v-209l360 324l-359 318v-216q-7 0 -19 -1t-48 -8t-69.5 -18.5t-76.5 -37t-76.5 -59t-62 -88t-39.5 -121.5z" />
+<glyph unicode="&#xe067;" d="M0 400v300q0 165 117.5 282.5t282.5 117.5h300q61 0 127 -23l-178 -177h-349q-41 0 -70.5 -29.5t-29.5 -70.5v-500q0 -41 29.5 -70.5t70.5 -29.5h500q41 0 70.5 29.5t29.5 70.5v69l200 200v-169q0 -165 -117.5 -282.5t-282.5 -117.5h-300q-165 0 -282.5 117.5 t-117.5 282.5zM342 632l283 -284l567 567l-137 137l-430 -431l-146 147z" />
+<glyph unicode="&#xe068;" d="M0 603l300 296v-198h200v200h-200l300 300l295 -300h-195v-200h200v198l300 -296l-300 -300v198h-200v-200h195l-295 -300l-300 300h200v200h-200v-198z" />
+<glyph unicode="&#xe069;" d="M200 50v1000q0 21 14.5 35.5t35.5 14.5h100q21 0 35.5 -14.5t14.5 -35.5v-437l500 487v-1100l-500 488v-438q0 -21 -14.5 -35.5t-35.5 -14.5h-100q-21 0 -35.5 14.5t-14.5 35.5z" />
+<glyph unicode="&#xe070;" d="M0 50v1000q0 21 14.5 35.5t35.5 14.5h100q21 0 35.5 -14.5t14.5 -35.5v-437l500 487v-487l500 487v-1100l-500 488v-488l-500 488v-438q0 -21 -14.5 -35.5t-35.5 -14.5h-100q-21 0 -35.5 14.5t-14.5 35.5z" />
+<glyph unicode="&#xe071;" d="M136 550l564 550v-487l500 487v-1100l-500 488v-488z" />
+<glyph unicode="&#xe072;" d="M200 0l900 550l-900 550v-1100z" />
+<glyph unicode="&#xe073;" d="M200 150q0 -21 14.5 -35.5t35.5 -14.5h200q21 0 35.5 14.5t14.5 35.5v800q0 21 -14.5 35.5t-35.5 14.5h-200q-21 0 -35.5 -14.5t-14.5 -35.5v-800zM600 150q0 -21 14.5 -35.5t35.5 -14.5h200q21 0 35.5 14.5t14.5 35.5v800q0 21 -14.5 35.5t-35.5 14.5h-200 q-21 0 -35.5 -14.5t-14.5 -35.5v-800z" />
+<glyph unicode="&#xe074;" d="M200 150q0 -20 14.5 -35t35.5 -15h800q21 0 35.5 15t14.5 35v800q0 21 -14.5 35.5t-35.5 14.5h-800q-21 0 -35.5 -14.5t-14.5 -35.5v-800z" />
+<glyph unicode="&#xe075;" d="M0 0v1100l500 -487v487l564 -550l-564 -550v488z" />
+<glyph unicode="&#xe076;" d="M0 0v1100l500 -487v487l500 -487v437q0 21 14.5 35.5t35.5 14.5h100q21 0 35.5 -14.5t14.5 -35.5v-1000q0 -21 -14.5 -35.5t-35.5 -14.5h-100q-21 0 -35.5 14.5t-14.5 35.5v438l-500 -488v488z" />
+<glyph unicode="&#xe077;" d="M300 0v1100l500 -487v437q0 21 14.5 35.5t35.5 14.5h100q21 0 35.5 -14.5t14.5 -35.5v-1000q0 -21 -14.5 -35.5t-35.5 -14.5h-100q-21 0 -35.5 14.5t-14.5 35.5v438z" />
+<glyph unicode="&#xe078;" d="M100 250v100q0 21 14.5 35.5t35.5 14.5h1000q21 0 35.5 -14.5t14.5 -35.5v-100q0 -21 -14.5 -35.5t-35.5 -14.5h-1000q-21 0 -35.5 14.5t-14.5 35.5zM100 500h1100l-550 564z" />
+<glyph unicode="&#xe079;" d="M185 599l592 -592l240 240l-353 353l353 353l-240 240z" />
+<glyph unicode="&#xe080;" d="M272 194l353 353l-353 353l241 240l572 -571l21 -22l-1 -1v-1l-592 -591z" />
+<glyph unicode="&#xe081;" d="M3 600q0 162 80 299.5t217.5 217.5t299.5 80t299.5 -80t217.5 -217.5t80 -299.5t-80 -299.5t-217.5 -217.5t-299.5 -80t-299.5 80t-217.5 217.5t-80 299.5zM300 500h200v-200h200v200h200v200h-200v200h-200v-200h-200v-200z" />
+<glyph unicode="&#xe082;" d="M3 600q0 162 80 299.5t217.5 217.5t299.5 80t299.5 -80t217.5 -217.5t80 -299.5t-80 -299.5t-217.5 -217.5t-299.5 -80t-299.5 80t-217.5 217.5t-80 299.5zM300 500h600v200h-600v-200z" />
+<glyph unicode="&#xe083;" d="M3 600q0 162 80 299.5t217.5 217.5t299.5 80t299.5 -80t217.5 -217.5t80 -299.5t-80 -299.5t-217.5 -217.5t-299.5 -80t-299.5 80t-217.5 217.5t-80 299.5zM246 459l213 -213l141 142l141 -142l213 213l-142 141l142 141l-213 212l-141 -141l-141 142l-212 -213l141 -141 z" />
+<glyph unicode="&#xe084;" d="M3 600q0 162 80 299.5t217.5 217.5t299.5 80t299.5 -80t217.5 -217.5t80 -299.5t-80 -299.5t-217.5 -217.5t-299.5 -80t-299.5 80t-217.5 217.5t-80 299.5zM270 551l276 -277l411 411l-175 174l-236 -236l-102 102z" />
+<glyph unicode="&#xe085;" d="M3 600q0 162 80 299.5t217.5 217.5t299.5 80t299.5 -80t217.5 -217.5t80 -299.5t-80 -299.5t-217.5 -217.5t-299.5 -80t-299.5 80t-217.5 217.5t-80 299.5zM364 700h143q4 0 11.5 -1t11 -1t6.5 3t3 9t1 11t3.5 8.5t3.5 6t5.5 4t6.5 2.5t9 1.5t9 0.5h11.5h12.5 q19 0 30 -10t11 -26q0 -22 -4 -28t-27 -22q-5 -1 -12.5 -3t-27 -13.5t-34 -27t-26.5 -46t-11 -68.5h200q5 3 14 8t31.5 25.5t39.5 45.5t31 69t14 94q0 51 -17.5 89t-42 58t-58.5 32t-58.5 15t-51.5 3q-50 0 -90.5 -12t-75 -38.5t-53.5 -74.5t-19 -114zM500 300h200v100h-200 v-100z" />
+<glyph unicode="&#xe086;" d="M3 600q0 162 80 299.5t217.5 217.5t299.5 80t299.5 -80t217.5 -217.5t80 -299.5t-80 -299.5t-217.5 -217.5t-299.5 -80t-299.5 80t-217.5 217.5t-80 299.5zM400 300h400v100h-100v300h-300v-100h100v-200h-100v-100zM500 800h200v100h-200v-100z" />
+<glyph unicode="&#xe087;" d="M0 500v200h195q31 125 98.5 199.5t206.5 100.5v200h200v-200q54 -20 113 -60t112.5 -105.5t71.5 -134.5h203v-200h-203q-25 -102 -116.5 -186t-180.5 -117v-197h-200v197q-140 27 -208 102.5t-98 200.5h-194zM290 500q24 -73 79.5 -127.5t130.5 -78.5v206h200v-206 q149 48 201 206h-201v200h200q-25 74 -75.5 127t-124.5 77v-204h-200v203q-75 -23 -130 -77t-79 -126h209v-200h-210z" />
+<glyph unicode="&#xe088;" d="M4 600q0 162 80 299t217 217t299 80t299 -80t217 -217t80 -299t-80 -299t-217 -217t-299 -80t-299 80t-217 217t-80 299zM186 600q0 -171 121.5 -292.5t292.5 -121.5t292.5 121.5t121.5 292.5t-121.5 292.5t-292.5 121.5t-292.5 -121.5t-121.5 -292.5zM356 465l135 135 l-135 135l109 109l135 -135l135 135l109 -109l-135 -135l135 -135l-109 -109l-135 135l-135 -135z" />
+<glyph unicode="&#xe089;" d="M4 600q0 162 80 299t217 217t299 80t299 -80t217 -217t80 -299t-80 -299t-217 -217t-299 -80t-299 80t-217 217t-80 299zM186 600q0 -171 121.5 -292.5t292.5 -121.5t292.5 121.5t121.5 292.5t-121.5 292.5t-292.5 121.5t-292.5 -121.5t-121.5 -292.5zM322 537l141 141 l87 -87l204 205l142 -142l-346 -345z" />
+<glyph unicode="&#xe090;" d="M4 600q0 162 80 299t217 217t299 80t299 -80t217 -217t80 -299t-80 -299t-217 -217t-299 -80t-299 80t-217 217t-80 299zM186 600q0 -115 62 -215l568 567q-100 62 -216 62q-171 0 -292.5 -121.5t-121.5 -292.5zM391 245q97 -59 209 -59q171 0 292.5 121.5t121.5 292.5 q0 112 -59 209z" />
+<glyph unicode="&#xe091;" d="M0 547l600 453v-300h600v-300h-600v-301z" />
+<glyph unicode="&#xe092;" d="M0 400v300h600v300l600 -453l-600 -448v301h-600z" />
+<glyph unicode="&#xe093;" d="M204 600l450 600l444 -600h-298v-600h-300v600h-296z" />
+<glyph unicode="&#xe094;" d="M104 600h296v600h300v-600h298l-449 -600z" />
+<glyph unicode="&#xe095;" d="M0 200q6 132 41 238.5t103.5 193t184 138t271.5 59.5v271l600 -453l-600 -448v301q-95 -2 -183 -20t-170 -52t-147 -92.5t-100 -135.5z" />
+<glyph unicode="&#xe096;" d="M0 0v400l129 -129l294 294l142 -142l-294 -294l129 -129h-400zM635 777l142 -142l294 294l129 -129v400h-400l129 -129z" />
+<glyph unicode="&#xe097;" d="M34 176l295 295l-129 129h400v-400l-129 130l-295 -295zM600 600v400l129 -129l295 295l142 -141l-295 -295l129 -130h-400z" />
+<glyph unicode="&#xe101;" d="M23 600q0 118 45.5 224.5t123 184t184 123t224.5 45.5t224.5 -45.5t184 -123t123 -184t45.5 -224.5t-45.5 -224.5t-123 -184t-184 -123t-224.5 -45.5t-224.5 45.5t-184 123t-123 184t-45.5 224.5zM456 851l58 -302q4 -20 21.5 -34.5t37.5 -14.5h54q20 0 37.5 14.5 t21.5 34.5l58 302q4 20 -8 34.5t-32 14.5h-207q-21 0 -33 -14.5t-8 -34.5zM500 300h200v100h-200v-100z" />
+<glyph unicode="&#xe102;" d="M0 800h100v-200h400v300h200v-300h400v200h100v100h-111q1 1 1 6.5t-1.5 15t-3.5 17.5l-34 172q-11 39 -41.5 63t-69.5 24q-32 0 -61 -17l-239 -144q-22 -13 -40 -35q-19 24 -40 36l-238 144q-33 18 -62 18q-39 0 -69.5 -23t-40.5 -61l-35 -177q-2 -8 -3 -18t-1 -15v-6 h-111v-100zM100 0h400v400h-400v-400zM200 900q-3 0 14 48t36 96l18 47l213 -191h-281zM700 0v400h400v-400h-400zM731 900l202 197q5 -12 12 -32.5t23 -64t25 -72t7 -28.5h-269z" />
+<glyph unicode="&#xe103;" d="M0 -22v143l216 193q-9 53 -13 83t-5.5 94t9 113t38.5 114t74 124q47 60 99.5 102.5t103 68t127.5 48t145.5 37.5t184.5 43.5t220 58.5q0 -189 -22 -343t-59 -258t-89 -181.5t-108.5 -120t-122 -68t-125.5 -30t-121.5 -1.5t-107.5 12.5t-87.5 17t-56.5 7.5l-99 -55z M238.5 300.5q19.5 -6.5 86.5 76.5q55 66 367 234q70 38 118.5 69.5t102 79t99 111.5t86.5 148q22 50 24 60t-6 19q-7 5 -17 5t-26.5 -14.5t-33.5 -39.5q-35 -51 -113.5 -108.5t-139.5 -89.5l-61 -32q-369 -197 -458 -401q-48 -111 -28.5 -117.5z" />
+<glyph unicode="&#xe104;" d="M111 408q0 -33 5 -63q9 -56 44 -119.5t105 -108.5q31 -21 64 -16t62 23.5t57 49.5t48 61.5t35 60.5q32 66 39 184.5t-13 157.5q79 -80 122 -164t26 -184q-5 -33 -20.5 -69.5t-37.5 -80.5q-10 -19 -14.5 -29t-12 -26t-9 -23.5t-3 -19t2.5 -15.5t11 -9.5t19.5 -5t30.5 2.5 t42 8q57 20 91 34t87.5 44.5t87 64t65.5 88.5t47 122q38 172 -44.5 341.5t-246.5 278.5q22 -44 43 -129q39 -159 -32 -154q-15 2 -33 9q-79 33 -120.5 100t-44 175.5t48.5 257.5q-13 -8 -34 -23.5t-72.5 -66.5t-88.5 -105.5t-60 -138t-8 -166.5q2 -12 8 -41.5t8 -43t6 -39.5 t3.5 -39.5t-1 -33.5t-6 -31.5t-13.5 -24t-21 -20.5t-31 -12q-38 -10 -67 13t-40.5 61.5t-15 81.5t10.5 75q-52 -46 -83.5 -101t-39 -107t-7.5 -85z" />
+<glyph unicode="&#xe105;" d="M-61 600l26 40q6 10 20 30t49 63.5t74.5 85.5t97 90t116.5 83.5t132.5 59t145.5 23.5t145.5 -23.5t132.5 -59t116.5 -83.5t97 -90t74.5 -85.5t49 -63.5t20 -30l26 -40l-26 -40q-6 -10 -20 -30t-49 -63.5t-74.5 -85.5t-97 -90t-116.5 -83.5t-132.5 -59t-145.5 -23.5 t-145.5 23.5t-132.5 59t-116.5 83.5t-97 90t-74.5 85.5t-49 63.5t-20 30zM120 600q7 -10 40.5 -58t56 -78.5t68 -77.5t87.5 -75t103 -49.5t125 -21.5t123.5 20t100.5 45.5t85.5 71.5t66.5 75.5t58 81.5t47 66q-1 1 -28.5 37.5t-42 55t-43.5 53t-57.5 63.5t-58.5 54 q49 -74 49 -163q0 -124 -88 -212t-212 -88t-212 88t-88 212q0 85 46 158q-102 -87 -226 -258zM377 656q49 -124 154 -191l105 105q-37 24 -75 72t-57 84l-20 36z" />
+<glyph unicode="&#xe106;" d="M-61 600l26 40q6 10 20 30t49 63.5t74.5 85.5t97 90t116.5 83.5t132.5 59t145.5 23.5q61 0 121 -17l37 142h148l-314 -1200h-148l37 143q-82 21 -165 71.5t-140 102t-109.5 112t-72 88.5t-29.5 43zM120 600q210 -282 393 -336l37 141q-107 18 -178.5 101.5t-71.5 193.5 q0 85 46 158q-102 -87 -226 -258zM377 656q49 -124 154 -191l47 47l23 87q-30 28 -59 69t-44 68l-14 26zM780 161l38 145q22 15 44.5 34t46 44t40.5 44t41 50.5t33.5 43.5t33 44t24.5 34q-97 127 -140 175l39 146q67 -54 131.5 -125.5t87.5 -103.5t36 -52l26 -40l-26 -40 q-7 -12 -25.5 -38t-63.5 -79.5t-95.5 -102.5t-124 -100t-146.5 -79z" />
+<glyph unicode="&#xe107;" d="M-97.5 34q13.5 -34 50.5 -34h1294q37 0 50.5 35.5t-7.5 67.5l-642 1056q-20 34 -48 36.5t-48 -29.5l-642 -1066q-21 -32 -7.5 -66zM155 200l445 723l445 -723h-345v100h-200v-100h-345zM500 600l100 -300l100 300v100h-200v-100z" />
+<glyph unicode="&#xe108;" d="M100 262v41q0 20 11 44.5t26 38.5l363 325v339q0 62 44 106t106 44t106 -44t44 -106v-339l363 -325q15 -14 26 -38.5t11 -44.5v-41q0 -20 -12 -26.5t-29 5.5l-359 249v-263q100 -91 100 -113v-64q0 -20 -13 -28.5t-32 0.5l-94 78h-222l-94 -78q-19 -9 -32 -0.5t-13 28.5 v64q0 22 100 113v263l-359 -249q-17 -12 -29 -5.5t-12 26.5z" />
+<glyph unicode="&#xe109;" d="M0 50q0 -20 14.5 -35t35.5 -15h1000q21 0 35.5 15t14.5 35v750h-1100v-750zM0 900h1100v150q0 21 -14.5 35.5t-35.5 14.5h-150v100h-100v-100h-500v100h-100v-100h-150q-21 0 -35.5 -14.5t-14.5 -35.5v-150zM100 100v100h100v-100h-100zM100 300v100h100v-100h-100z M100 500v100h100v-100h-100zM300 100v100h100v-100h-100zM300 300v100h100v-100h-100zM300 500v100h100v-100h-100zM500 100v100h100v-100h-100zM500 300v100h100v-100h-100zM500 500v100h100v-100h-100zM700 100v100h100v-100h-100zM700 300v100h100v-100h-100zM700 500 v100h100v-100h-100zM900 100v100h100v-100h-100zM900 300v100h100v-100h-100zM900 500v100h100v-100h-100z" />
+<glyph unicode="&#xe110;" d="M0 200v200h259l600 600h241v198l300 -295l-300 -300v197h-159l-600 -600h-341zM0 800h259l122 -122l141 142l-181 180h-341v-200zM678 381l141 142l122 -123h159v198l300 -295l-300 -300v197h-241z" />
+<glyph unicode="&#xe111;" d="M0 400v600q0 41 29.5 70.5t70.5 29.5h1000q41 0 70.5 -29.5t29.5 -70.5v-600q0 -41 -29.5 -70.5t-70.5 -29.5h-596l-304 -300v300h-100q-41 0 -70.5 29.5t-29.5 70.5z" />
+<glyph unicode="&#xe112;" d="M100 600v200h300v-250q0 -113 6 -145q17 -92 102 -117q39 -11 92 -11q37 0 66.5 5.5t50 15.5t36 24t24 31.5t14 37.5t7 42t2.5 45t0 47v25v250h300v-200q0 -42 -3 -83t-15 -104t-31.5 -116t-58 -109.5t-89 -96.5t-129 -65.5t-174.5 -25.5t-174.5 25.5t-129 65.5t-89 96.5 t-58 109.5t-31.5 116t-15 104t-3 83zM100 900v300h300v-300h-300zM800 900v300h300v-300h-300z" />
+<glyph unicode="&#xe113;" d="M-30 411l227 -227l352 353l353 -353l226 227l-578 579z" />
+<glyph unicode="&#xe114;" d="M70 797l580 -579l578 579l-226 227l-353 -353l-352 353z" />
+<glyph unicode="&#xe115;" d="M-198 700l299 283l300 -283h-203v-400h385l215 -200h-800v600h-196zM402 1000l215 -200h381v-400h-198l299 -283l299 283h-200v600h-796z" />
+<glyph unicode="&#xe116;" d="M18 939q-5 24 10 42q14 19 39 19h896l38 162q5 17 18.5 27.5t30.5 10.5h94q20 0 35 -14.5t15 -35.5t-15 -35.5t-35 -14.5h-54l-201 -961q-2 -4 -6 -10.5t-19 -17.5t-33 -11h-31v-50q0 -20 -14.5 -35t-35.5 -15t-35.5 15t-14.5 35v50h-300v-50q0 -20 -14.5 -35t-35.5 -15 t-35.5 15t-14.5 35v50h-50q-21 0 -35.5 15t-14.5 35q0 21 14.5 35.5t35.5 14.5h535l48 200h-633q-32 0 -54.5 21t-27.5 43z" />
+<glyph unicode="&#xe117;" d="M0 0v800h1200v-800h-1200zM0 900v100h200q0 41 29.5 70.5t70.5 29.5h300q41 0 70.5 -29.5t29.5 -70.5h500v-100h-1200z" />
+<glyph unicode="&#xe118;" d="M1 0l300 700h1200l-300 -700h-1200zM1 400v600h200q0 41 29.5 70.5t70.5 29.5h300q41 0 70.5 -29.5t29.5 -70.5h500v-200h-1000z" />
+<glyph unicode="&#xe119;" d="M302 300h198v600h-198l298 300l298 -300h-198v-600h198l-298 -300z" />
+<glyph unicode="&#xe120;" d="M0 600l300 298v-198h600v198l300 -298l-300 -297v197h-600v-197z" />
+<glyph unicode="&#xe121;" d="M0 100v100q0 41 29.5 70.5t70.5 29.5h1000q41 0 70.5 -29.5t29.5 -70.5v-100q0 -41 -29.5 -70.5t-70.5 -29.5h-1000q-41 0 -70.5 29.5t-29.5 70.5zM31 400l172 739q5 22 23 41.5t38 19.5h672q19 0 37.5 -22.5t23.5 -45.5l172 -732h-1138zM800 100h100v100h-100v-100z M1000 100h100v100h-100v-100z" />
+<glyph unicode="&#xe122;" d="M-101 600v50q0 24 25 49t50 38l25 13v-250l-11 5.5t-24 14t-30 21.5t-24 27.5t-11 31.5zM100 500v250v8v8v7t0.5 7t1.5 5.5t2 5t3 4t4.5 3.5t6 1.5t7.5 0.5h200l675 250v-850l-675 200h-38l47 -276q2 -12 -3 -17.5t-11 -6t-21 -0.5h-8h-83q-20 0 -34.5 14t-18.5 35 q-55 337 -55 351zM1100 200v850q0 21 14.5 35.5t35.5 14.5q20 0 35 -14.5t15 -35.5v-850q0 -20 -15 -35t-35 -15q-21 0 -35.5 15t-14.5 35z" />
+<glyph unicode="&#xe123;" d="M74 350q0 21 13.5 35.5t33.5 14.5h18l117 173l63 327q15 77 76 140t144 83l-18 32q-6 19 3 32t29 13h94q20 0 29 -10.5t3 -29.5q-18 -36 -18 -37q83 -19 144 -82.5t76 -140.5l63 -327l118 -173h17q20 0 33.5 -14.5t13.5 -35.5q0 -20 -13 -40t-31 -27q-8 -3 -23 -8.5 t-65 -20t-103 -25t-132.5 -19.5t-158.5 -9q-125 0 -245.5 20.5t-178.5 40.5l-58 20q-18 7 -31 27.5t-13 40.5zM497 110q12 -49 40 -79.5t63 -30.5t63 30.5t39 79.5q-48 -6 -102 -6t-103 6z" />
+<glyph unicode="&#xe124;" d="M21 445l233 -45l-78 -224l224 78l45 -233l155 179l155 -179l45 233l224 -78l-78 224l234 45l-180 155l180 156l-234 44l78 225l-224 -78l-45 233l-155 -180l-155 180l-45 -233l-224 78l78 -225l-233 -44l179 -156z" />
+<glyph unicode="&#xe125;" d="M0 200h200v600h-200v-600zM300 275q0 -75 100 -75h61q124 -100 139 -100h250q46 0 83 57l238 344q29 31 29 74v100q0 44 -30.5 84.5t-69.5 40.5h-328q28 118 28 125v150q0 44 -30.5 84.5t-69.5 40.5h-50q-27 0 -51 -20t-38 -48l-96 -198l-145 -196q-20 -26 -20 -63v-400z M400 300v375l150 213l100 212h50v-175l-50 -225h450v-125l-250 -375h-214l-136 100h-100z" />
+<glyph unicode="&#xe126;" d="M0 400v600h200v-600h-200zM300 525v400q0 75 100 75h61q124 100 139 100h250q46 0 83 -57l238 -344q29 -31 29 -74v-100q0 -44 -30.5 -84.5t-69.5 -40.5h-328q28 -118 28 -125v-150q0 -44 -30.5 -84.5t-69.5 -40.5h-50q-27 0 -51 20t-38 48l-96 198l-145 196 q-20 26 -20 63zM400 525l150 -212l100 -213h50v175l-50 225h450v125l-250 375h-214l-136 -100h-100v-375z" />
+<glyph unicode="&#xe127;" d="M8 200v600h200v-600h-200zM308 275v525q0 17 14 35.5t28 28.5l14 9l362 230q14 6 25 6q17 0 29 -12l109 -112q14 -14 14 -34q0 -18 -11 -32l-85 -121h302q85 0 138.5 -38t53.5 -110t-54.5 -111t-138.5 -39h-107l-130 -339q-7 -22 -20.5 -41.5t-28.5 -19.5h-341 q-7 0 -90 81t-83 94zM408 289l100 -89h293l131 339q6 21 19.5 41t28.5 20h203q16 0 25 15t9 36q0 20 -9 34.5t-25 14.5h-457h-6.5h-7.5t-6.5 0.5t-6 1t-5 1.5t-5.5 2.5t-4 4t-4 5.5q-5 12 -5 20q0 14 10 27l147 183l-86 83l-339 -236v-503z" />
+<glyph unicode="&#xe128;" d="M-101 651q0 72 54 110t139 38l302 -1l-85 121q-11 16 -11 32q0 21 14 34l109 113q13 12 29 12q11 0 25 -6l365 -230q7 -4 17 -10.5t26.5 -26t16.5 -36.5v-526q0 -13 -86 -93.5t-94 -80.5h-341q-16 0 -29.5 20t-19.5 41l-130 339h-107q-84 0 -139 39t-55 111zM-1 601h222 q15 0 28.5 -20.5t19.5 -40.5l131 -339h293l107 89v502l-343 237l-87 -83l145 -184q10 -11 10 -26q0 -11 -5 -20q-1 -3 -3.5 -5.5l-4 -4t-5 -2.5t-5.5 -1.5t-6.5 -1t-6.5 -0.5h-7.5h-6.5h-476v-100zM1000 201v600h200v-600h-200z" />
+<glyph unicode="&#xe129;" d="M97 719l230 -363q4 -6 10.5 -15.5t26 -25t36.5 -15.5h525q13 0 94 83t81 90v342q0 15 -20 28.5t-41 19.5l-339 131v106q0 84 -39 139t-111 55t-110 -53.5t-38 -138.5v-302l-121 84q-15 12 -33.5 11.5t-32.5 -13.5l-112 -110q-22 -22 -6 -53zM172 739l83 86l183 -146 q22 -18 47 -5q3 1 5.5 3.5l4 4t2.5 5t1.5 5.5t1 6.5t0.5 6.5v7.5v6.5v456q0 22 25 31t50 -0.5t25 -30.5v-202q0 -16 20 -29.5t41 -19.5l339 -130v-294l-89 -100h-503zM400 0v200h600v-200h-600z" />
+<glyph unicode="&#xe130;" d="M2 585q-16 -31 6 -53l112 -110q13 -13 32 -13.5t34 10.5l121 85q0 -51 -0.5 -153.5t-0.5 -148.5q0 -84 38.5 -138t110.5 -54t111 55t39 139v106l339 131q20 6 40.5 19.5t20.5 28.5v342q0 7 -81 90t-94 83h-525q-17 0 -35.5 -14t-28.5 -28l-10 -15zM77 565l236 339h503 l89 -100v-294l-340 -130q-20 -6 -40 -20t-20 -29v-202q0 -22 -25 -31t-50 0t-25 31v456v14.5t-1.5 11.5t-5 12t-9.5 7q-24 13 -46 -5l-184 -146zM305 1104v200h600v-200h-600z" />
+<glyph unicode="&#xe131;" d="M5 597q0 122 47.5 232.5t127.5 190.5t190.5 127.5t232.5 47.5q162 0 299.5 -80t217.5 -218t80 -300t-80 -299.5t-217.5 -217.5t-299.5 -80t-300 80t-218 217.5t-80 299.5zM298 701l2 -201h300l-2 -194l402 294l-402 298v-197h-300z" />
+<glyph unicode="&#xe132;" d="M0 597q0 122 47.5 232.5t127.5 190.5t190.5 127.5t231.5 47.5q122 0 232.5 -47.5t190.5 -127.5t127.5 -190.5t47.5 -232.5q0 -162 -80 -299.5t-218 -217.5t-300 -80t-299.5 80t-217.5 217.5t-80 299.5zM200 600l402 -294l-2 194h300l2 201h-300v197z" />
+<glyph unicode="&#xe133;" d="M5 597q0 122 47.5 232.5t127.5 190.5t190.5 127.5t232.5 47.5q162 0 299.5 -80t217.5 -218t80 -300t-80 -299.5t-217.5 -217.5t-299.5 -80t-300 80t-218 217.5t-80 299.5zM300 600h200v-300h200v300h200l-300 400z" />
+<glyph unicode="&#xe134;" d="M5 597q0 122 47.5 232.5t127.5 190.5t190.5 127.5t232.5 47.5q162 0 299.5 -80t217.5 -218t80 -300t-80 -299.5t-217.5 -217.5t-299.5 -80t-300 80t-218 217.5t-80 299.5zM300 600l300 -400l300 400h-200v300h-200v-300h-200z" />
+<glyph unicode="&#xe135;" d="M5 597q0 122 47.5 232.5t127.5 190.5t190.5 127.5t232.5 47.5q121 0 231.5 -47.5t190.5 -127.5t127.5 -190.5t47.5 -232.5q0 -162 -80 -299.5t-217.5 -217.5t-299.5 -80t-300 80t-218 217.5t-80 299.5zM254 780q-8 -33 5.5 -92.5t7.5 -87.5q0 -9 17 -44t16 -60 q12 0 23 -5.5t23 -15t20 -13.5q24 -12 108 -42q22 -8 53 -31.5t59.5 -38.5t57.5 -11q8 -18 -15 -55t-20 -57q42 -71 87 -80q0 -6 -3 -15.5t-3.5 -14.5t4.5 -17q104 -3 221 112q30 29 47 47t34.5 49t20.5 62q-14 9 -37 9.5t-36 7.5q-14 7 -49 15t-52 19q-9 0 -39.5 -0.5 t-46.5 -1.5t-39 -6.5t-39 -16.5q-50 -35 -66 -12q-4 2 -3.5 25.5t0.5 25.5q-6 13 -26.5 17t-24.5 7q2 22 -2 41t-16.5 28t-38.5 -20q-23 -25 -42 4q-19 28 -8 58q6 16 22 22q6 -1 26 -1.5t33.5 -4t19.5 -13.5q12 -19 32 -37.5t34 -27.5l14 -8q0 3 9.5 39.5t5.5 57.5 q-4 23 14.5 44.5t22.5 31.5q5 14 10 35t8.5 31t15.5 22.5t34 21.5q-6 18 10 37q8 0 23.5 -1.5t24.5 -1.5t20.5 4.5t20.5 15.5q-10 23 -30.5 42.5t-38 30t-49 26.5t-43.5 23q11 39 2 44q31 -13 58 -14.5t39 3.5l11 4q7 36 -16.5 53.5t-64.5 28.5t-56 23q-19 -3 -37 0 q-15 -12 -36.5 -21t-34.5 -12t-44 -8t-39 -6q-15 -3 -45.5 0.5t-45.5 -2.5q-21 -7 -52 -26.5t-34 -34.5q-3 -11 6.5 -22.5t8.5 -18.5q-3 -34 -27.5 -90.5t-29.5 -79.5zM518 916q3 12 16 30t16 25q10 -10 18.5 -10t14 6t14.5 14.5t16 12.5q0 -24 17 -66.5t17 -43.5 q-9 2 -31 5t-36 5t-32 8t-30 14zM692 1003h1h-1z" />
+<glyph unicode="&#xe136;" d="M0 164.5q0 21.5 15 37.5l600 599q-33 101 6 201.5t135 154.5q164 92 306 -9l-259 -138l145 -232l251 126q13 -175 -151 -267q-123 -70 -253 -23l-596 -596q-15 -16 -36.5 -16t-36.5 16l-111 110q-15 15 -15 36.5z" />
+<glyph unicode="&#xe137;" horiz-adv-x="1220" d="M0 196v100q0 41 29.5 70.5t70.5 29.5h1000q41 0 70.5 -29.5t29.5 -70.5v-100q0 -41 -29.5 -70.5t-70.5 -29.5h-1000q-41 0 -70.5 29.5t-29.5 70.5zM0 596v100q0 41 29.5 70.5t70.5 29.5h1000q41 0 70.5 -29.5t29.5 -70.5v-100q0 -41 -29.5 -70.5t-70.5 -29.5h-1000 q-41 0 -70.5 29.5t-29.5 70.5zM0 996v100q0 41 29.5 70.5t70.5 29.5h1000q41 0 70.5 -29.5t29.5 -70.5v-100q0 -41 -29.5 -70.5t-70.5 -29.5h-1000q-41 0 -70.5 29.5t-29.5 70.5zM600 596h500v100h-500v-100zM800 196h300v100h-300v-100zM900 996h200v100h-200v-100z" />
+<glyph unicode="&#xe138;" d="M100 1100v100h1000v-100h-1000zM150 1000h900l-350 -500v-300l-200 -200v500z" />
+<glyph unicode="&#xe139;" d="M0 200v200h1200v-200q0 -41 -29.5 -70.5t-70.5 -29.5h-1000q-41 0 -70.5 29.5t-29.5 70.5zM0 500v400q0 41 29.5 70.5t70.5 29.5h300v100q0 41 29.5 70.5t70.5 29.5h200q41 0 70.5 -29.5t29.5 -70.5v-100h300q41 0 70.5 -29.5t29.5 -70.5v-400h-500v100h-200v-100h-500z M500 1000h200v100h-200v-100z" />
+<glyph unicode="&#xe140;" d="M0 0v400l129 -129l200 200l142 -142l-200 -200l129 -129h-400zM0 800l129 129l200 -200l142 142l-200 200l129 129h-400v-400zM729 329l142 142l200 -200l129 129v-400h-400l129 129zM729 871l200 200l-129 129h400v-400l-129 129l-200 -200z" />
+<glyph unicode="&#xe141;" d="M0 596q0 162 80 299t217 217t299 80t299 -80t217 -217t80 -299t-80 -299t-217 -217t-299 -80t-299 80t-217 217t-80 299zM182 596q0 -172 121.5 -293t292.5 -121t292.5 121t121.5 293q0 171 -121.5 292.5t-292.5 121.5t-292.5 -121.5t-121.5 -292.5zM291 655 q0 23 15.5 38.5t38.5 15.5t39 -16t16 -38q0 -23 -16 -39t-39 -16q-22 0 -38 16t-16 39zM400 850q0 22 16 38.5t39 16.5q22 0 38 -16t16 -39t-16 -39t-38 -16q-23 0 -39 16.5t-16 38.5zM514 609q0 32 20.5 56.5t51.5 29.5l122 126l1 1q-9 14 -9 28q0 22 16 38.5t39 16.5 q22 0 38 -16t16 -39t-16 -39t-38 -16q-14 0 -29 10l-55 -145q17 -22 17 -51q0 -36 -25.5 -61.5t-61.5 -25.5t-61.5 25.5t-25.5 61.5zM800 655q0 22 16 38t39 16t38.5 -15.5t15.5 -38.5t-16 -39t-38 -16q-23 0 -39 16t-16 39z" />
+<glyph unicode="&#xe142;" d="M-40 375q-13 -95 35 -173q35 -57 94 -89t129 -32q63 0 119 28q33 16 65 40.5t52.5 45.5t59.5 64q40 44 57 61l394 394q35 35 47 84t-3 96q-27 87 -117 104q-20 2 -29 2q-46 0 -78.5 -16.5t-67.5 -51.5l-389 -396l-7 -7l69 -67l377 373q20 22 39 38q23 23 50 23 q38 0 53 -36q16 -39 -20 -75l-547 -547q-52 -52 -125 -52q-55 0 -100 33t-54 96q-5 35 2.5 66t31.5 63t42 50t56 54q24 21 44 41l348 348q52 52 82.5 79.5t84 54t107.5 26.5q25 0 48 -4q95 -17 154 -94.5t51 -175.5q-7 -101 -98 -192l-252 -249l-253 -256l7 -7l69 -60 l517 511q67 67 95 157t11 183q-16 87 -67 154t-130 103q-69 33 -152 33q-107 0 -197 -55q-40 -24 -111 -95l-512 -512q-68 -68 -81 -163z" />
+<glyph unicode="&#xe143;" d="M80 784q0 131 98.5 229.5t230.5 98.5q143 0 241 -129q103 129 246 129q129 0 226 -98.5t97 -229.5q0 -46 -17.5 -91t-61 -99t-77 -89.5t-104.5 -105.5q-197 -191 -293 -322l-17 -23l-16 23q-43 58 -100 122.5t-92 99.5t-101 100q-71 70 -104.5 105.5t-77 89.5t-61 99 t-17.5 91zM250 784q0 -27 30.5 -70t61.5 -75.5t95 -94.5l22 -22q93 -90 190 -201q82 92 195 203l12 12q64 62 97.5 97t64.5 79t31 72q0 71 -48 119.5t-105 48.5q-74 0 -132 -83l-118 -171l-114 174q-51 80 -123 80q-60 0 -109.5 -49.5t-49.5 -118.5z" />
+<glyph unicode="&#xe144;" d="M57 353q0 -95 66 -159l141 -142q68 -66 159 -66q93 0 159 66l283 283q66 66 66 159t-66 159l-141 141q-8 9 -19 17l-105 -105l212 -212l-389 -389l-247 248l95 95l-18 18q-46 45 -75 101l-55 -55q-66 -66 -66 -159zM269 706q0 -93 66 -159l141 -141q7 -7 19 -17l105 105 l-212 212l389 389l247 -247l-95 -96l18 -17q47 -49 77 -100l29 29q35 35 62.5 88t27.5 96q0 93 -66 159l-141 141q-66 66 -159 66q-95 0 -159 -66l-283 -283q-66 -64 -66 -159z" />
+<glyph unicode="&#xe145;" d="M200 100v953q0 21 30 46t81 48t129 38t163 15t162 -15t127 -38t79 -48t29 -46v-953q0 -41 -29.5 -70.5t-70.5 -29.5h-600q-41 0 -70.5 29.5t-29.5 70.5zM300 300h600v700h-600v-700zM496 150q0 -43 30.5 -73.5t73.5 -30.5t73.5 30.5t30.5 73.5t-30.5 73.5t-73.5 30.5 t-73.5 -30.5t-30.5 -73.5z" />
+<glyph unicode="&#xe146;" d="M0 0l303 380l207 208l-210 212h300l267 279l-35 36q-15 14 -15 35t15 35q14 15 35 15t35 -15l283 -282q15 -15 15 -36t-15 -35q-14 -15 -35 -15t-35 15l-36 35l-279 -267v-300l-212 210l-208 -207z" />
+<glyph unicode="&#xe148;" d="M295 433h139q5 -77 48.5 -126.5t117.5 -64.5v335q-6 1 -15.5 4t-11.5 3q-46 14 -79 26.5t-72 36t-62.5 52t-40 72.5t-16.5 99q0 92 44 159.5t109 101t144 40.5v78h100v-79q38 -4 72.5 -13.5t75.5 -31.5t71 -53.5t51.5 -84t24.5 -118.5h-159q-8 72 -35 109.5t-101 50.5 v-307l64 -14q34 -7 64 -16.5t70 -31.5t67.5 -52t47.5 -80.5t20 -112.5q0 -139 -89 -224t-244 -96v-77h-100v78q-152 17 -237 104q-40 40 -52.5 93.5t-15.5 139.5zM466 889q0 -29 8 -51t16.5 -34t29.5 -22.5t31 -13.5t38 -10q7 -2 11 -3v274q-61 -8 -97.5 -37.5t-36.5 -102.5 zM700 237q170 18 170 151q0 64 -44 99.5t-126 60.5v-311z" />
+<glyph unicode="&#xe149;" d="M100 600v100h166q-24 49 -44 104q-10 26 -14.5 55.5t-3 72.5t25 90t68.5 87q97 88 263 88q129 0 230 -89t101 -208h-153q0 52 -34 89.5t-74 51.5t-76 14q-37 0 -79 -14.5t-62 -35.5q-41 -44 -41 -101q0 -28 16.5 -69.5t28 -62.5t41.5 -72h241v-100h-197q8 -50 -2.5 -115 t-31.5 -94q-41 -59 -99 -113q35 11 84 18t70 7q33 1 103 -16t103 -17q76 0 136 30l50 -147q-41 -25 -80.5 -36.5t-59 -13t-61.5 -1.5q-23 0 -128 33t-155 29q-39 -4 -82 -17t-66 -25l-24 -11l-55 145l16.5 11t15.5 10t13.5 9.5t14.5 12t14.5 14t17.5 18.5q48 55 54 126.5 t-30 142.5h-221z" />
+<glyph unicode="&#xe150;" d="M2 300l298 -300l298 300h-198v900h-200v-900h-198zM602 900l298 300l298 -300h-198v-900h-200v900h-198z" />
+<glyph unicode="&#xe151;" d="M2 300h198v900h200v-900h198l-298 -300zM700 0v200h100v-100h200v-100h-300zM700 400v100h300v-200h-99v-100h-100v100h99v100h-200zM700 700v500h300v-500h-100v100h-100v-100h-100zM801 900h100v200h-100v-200z" />
+<glyph unicode="&#xe152;" d="M2 300h198v900h200v-900h198l-298 -300zM700 0v500h300v-500h-100v100h-100v-100h-100zM700 700v200h100v-100h200v-100h-300zM700 1100v100h300v-200h-99v-100h-100v100h99v100h-200zM801 200h100v200h-100v-200z" />
+<glyph unicode="&#xe153;" d="M2 300l298 -300l298 300h-198v900h-200v-900h-198zM800 100v400h300v-500h-100v100h-200zM800 1100v100h200v-500h-100v400h-100zM901 200h100v200h-100v-200z" />
+<glyph unicode="&#xe154;" d="M2 300l298 -300l298 300h-198v900h-200v-900h-198zM800 400v100h200v-500h-100v400h-100zM800 800v400h300v-500h-100v100h-200zM901 900h100v200h-100v-200z" />
+<glyph unicode="&#xe155;" d="M2 300l298 -300l298 300h-198v900h-200v-900h-198zM700 100v200h500v-200h-500zM700 400v200h400v-200h-400zM700 700v200h300v-200h-300zM700 1000v200h200v-200h-200z" />
+<glyph unicode="&#xe156;" d="M2 300l298 -300l298 300h-198v900h-200v-900h-198zM700 100v200h200v-200h-200zM700 400v200h300v-200h-300zM700 700v200h400v-200h-400zM700 1000v200h500v-200h-500z" />
+<glyph unicode="&#xe157;" d="M0 400v300q0 165 117.5 282.5t282.5 117.5h300q162 0 281 -118.5t119 -281.5v-300q0 -165 -118.5 -282.5t-281.5 -117.5h-300q-165 0 -282.5 117.5t-117.5 282.5zM200 300q0 -41 29.5 -70.5t70.5 -29.5h500q41 0 70.5 29.5t29.5 70.5v500q0 41 -29.5 70.5t-70.5 29.5 h-500q-41 0 -70.5 -29.5t-29.5 -70.5v-500z" />
+<glyph unicode="&#xe158;" d="M0 400v300q0 163 119 281.5t281 118.5h300q165 0 282.5 -117.5t117.5 -282.5v-300q0 -165 -117.5 -282.5t-282.5 -117.5h-300q-163 0 -281.5 117.5t-118.5 282.5zM200 300q0 -41 29.5 -70.5t70.5 -29.5h500q41 0 70.5 29.5t29.5 70.5v500q0 41 -29.5 70.5t-70.5 29.5 h-500q-41 0 -70.5 -29.5t-29.5 -70.5v-500zM400 300l333 250l-333 250v-500z" />
+<glyph unicode="&#xe159;" d="M0 400v300q0 163 117.5 281.5t282.5 118.5h300q163 0 281.5 -119t118.5 -281v-300q0 -165 -117.5 -282.5t-282.5 -117.5h-300q-165 0 -282.5 117.5t-117.5 282.5zM200 300q0 -41 29.5 -70.5t70.5 -29.5h500q41 0 70.5 29.5t29.5 70.5v500q0 41 -29.5 70.5t-70.5 29.5 h-500q-41 0 -70.5 -29.5t-29.5 -70.5v-500zM300 700l250 -333l250 333h-500z" />
+<glyph unicode="&#xe160;" d="M0 400v300q0 165 117.5 282.5t282.5 117.5h300q165 0 282.5 -117.5t117.5 -282.5v-300q0 -162 -118.5 -281t-281.5 -119h-300q-165 0 -282.5 118.5t-117.5 281.5zM200 300q0 -41 29.5 -70.5t70.5 -29.5h500q41 0 70.5 29.5t29.5 70.5v500q0 41 -29.5 70.5t-70.5 29.5 h-500q-41 0 -70.5 -29.5t-29.5 -70.5v-500zM300 400h500l-250 333z" />
+<glyph unicode="&#xe161;" d="M0 400v300h300v200l400 -350l-400 -350v200h-300zM500 0v200h500q41 0 70.5 29.5t29.5 70.5v500q0 41 -29.5 70.5t-70.5 29.5h-500v200h400q165 0 282.5 -117.5t117.5 -282.5v-300q0 -165 -117.5 -282.5t-282.5 -117.5h-400z" />
+<glyph unicode="&#xe162;" d="M217 519q8 -19 31 -19h302q-155 -438 -160 -458q-5 -21 4 -32l9 -8h9q14 0 26 15q11 13 274.5 321.5t264.5 308.5q14 19 5 36q-8 17 -31 17l-301 -1q1 4 78 219.5t79 227.5q2 15 -5 27l-9 9h-9q-15 0 -25 -16q-4 -6 -98 -111.5t-228.5 -257t-209.5 -237.5q-16 -19 -6 -41 z" />
+<glyph unicode="&#xe163;" d="M0 400q0 -165 117.5 -282.5t282.5 -117.5h300q47 0 100 15v185h-500q-41 0 -70.5 29.5t-29.5 70.5v500q0 41 29.5 70.5t70.5 29.5h500v185q-14 4 -114 7.5t-193 5.5l-93 2q-165 0 -282.5 -117.5t-117.5 -282.5v-300zM600 400v300h300v200l400 -350l-400 -350v200h-300z " />
+<glyph unicode="&#xe164;" d="M0 400q0 -165 117.5 -282.5t282.5 -117.5h300q163 0 281.5 117.5t118.5 282.5v98l-78 73l-122 -123v-148q0 -41 -29.5 -70.5t-70.5 -29.5h-500q-41 0 -70.5 29.5t-29.5 70.5v500q0 41 29.5 70.5t70.5 29.5h156l118 122l-74 78h-100q-165 0 -282.5 -117.5t-117.5 -282.5 v-300zM496 709l353 342l-149 149h500v-500l-149 149l-342 -353z" />
+<glyph unicode="&#xe165;" d="M4 600q0 162 80 299t217 217t299 80t299 -80t217 -217t80 -299t-80 -299t-217 -217t-299 -80t-299 80t-217 217t-80 299zM186 600q0 -171 121.5 -292.5t292.5 -121.5t292.5 121.5t121.5 292.5t-121.5 292.5t-292.5 121.5t-292.5 -121.5t-121.5 -292.5zM406 600 q0 80 57 137t137 57t137 -57t57 -137t-57 -137t-137 -57t-137 57t-57 137z" />
+<glyph unicode="&#xe166;" d="M0 0v275q0 11 7 18t18 7h1048q11 0 19 -7.5t8 -17.5v-275h-1100zM100 800l445 -500l450 500h-295v400h-300v-400h-300zM900 150h100v50h-100v-50z" />
+<glyph unicode="&#xe167;" d="M0 0v275q0 11 7 18t18 7h1048q11 0 19 -7.5t8 -17.5v-275h-1100zM100 700h300v-300h300v300h295l-445 500zM900 150h100v50h-100v-50z" />
+<glyph unicode="&#xe168;" d="M0 0v275q0 11 7 18t18 7h1048q11 0 19 -7.5t8 -17.5v-275h-1100zM100 705l305 -305l596 596l-154 155l-442 -442l-150 151zM900 150h100v50h-100v-50z" />
+<glyph unicode="&#xe169;" d="M0 0v275q0 11 7 18t18 7h1048q11 0 19 -7.5t8 -17.5v-275h-1100zM100 988l97 -98l212 213l-97 97zM200 400l697 1l3 699l-250 -239l-149 149l-212 -212l149 -149zM900 150h100v50h-100v-50z" />
+<glyph unicode="&#xe170;" d="M0 0v275q0 11 7 18t18 7h1048q11 0 19 -7.5t8 -17.5v-275h-1100zM200 612l212 -212l98 97l-213 212zM300 1200l239 -250l-149 -149l212 -212l149 148l249 -237l-1 697zM900 150h100v50h-100v-50z" />
+<glyph unicode="&#xe171;" d="M23 415l1177 784v-1079l-475 272l-310 -393v416h-392zM494 210l672 938l-672 -712v-226z" />
+<glyph unicode="&#xe172;" d="M0 150v1000q0 20 14.5 35t35.5 15h250v-300h500v300h100l200 -200v-850q0 -21 -15 -35.5t-35 -14.5h-150v400h-700v-400h-150q-21 0 -35.5 14.5t-14.5 35.5zM600 1000h100v200h-100v-200z" />
+<glyph unicode="&#xe173;" d="M0 150v1000q0 20 14.5 35t35.5 15h250v-300h500v300h100l200 -200v-218l-276 -275l-120 120l-126 -127h-378v-400h-150q-21 0 -35.5 14.5t-14.5 35.5zM581 306l123 123l120 -120l353 352l123 -123l-475 -476zM600 1000h100v200h-100v-200z" />
+<glyph unicode="&#xe174;" d="M0 150v1000q0 20 14.5 35t35.5 15h250v-300h500v300h100l200 -200v-269l-103 -103l-170 170l-298 -298h-329v-400h-150q-21 0 -35.5 14.5t-14.5 35.5zM600 1000h100v200h-100v-200zM700 133l170 170l-170 170l127 127l170 -170l170 170l127 -128l-170 -169l170 -170 l-127 -127l-170 170l-170 -170z" />
+<glyph unicode="&#xe175;" d="M0 150v1000q0 20 14.5 35t35.5 15h250v-300h500v300h100l200 -200v-300h-400v-200h-500v-400h-150q-21 0 -35.5 14.5t-14.5 35.5zM600 300l300 -300l300 300h-200v300h-200v-300h-200zM600 1000v200h100v-200h-100z" />
+<glyph unicode="&#xe176;" d="M0 150v1000q0 20 14.5 35t35.5 15h250v-300h500v300h100l200 -200v-402l-200 200l-298 -298h-402v-400h-150q-21 0 -35.5 14.5t-14.5 35.5zM600 300h200v-300h200v300h200l-300 300zM600 1000v200h100v-200h-100z" />
+<glyph unicode="&#xe177;" d="M0 250q0 -21 14.5 -35.5t35.5 -14.5h1100q21 0 35.5 14.5t14.5 35.5v550h-1200v-550zM0 900h1200v150q0 21 -14.5 35.5t-35.5 14.5h-1100q-21 0 -35.5 -14.5t-14.5 -35.5v-150zM100 300v200h400v-200h-400z" />
+<glyph unicode="&#xe178;" d="M0 400l300 298v-198h400v-200h-400v-198zM100 800v200h100v-200h-100zM300 800v200h100v-200h-100zM500 800v200h400v198l300 -298l-300 -298v198h-400zM800 300v200h100v-200h-100zM1000 300h100v200h-100v-200z" />
+<glyph unicode="&#xe179;" d="M100 700v400l50 100l50 -100v-300h100v300l50 100l50 -100v-300h100v300l50 100l50 -100v-400l-100 -203v-447q0 -21 -14.5 -35.5t-35.5 -14.5h-200q-21 0 -35.5 14.5t-14.5 35.5v447zM800 597q0 -29 10.5 -55.5t25 -43t29 -28.5t25.5 -18l10 -5v-397q0 -21 14.5 -35.5 t35.5 -14.5h200q21 0 35.5 14.5t14.5 35.5v1106q0 31 -18 40.5t-44 -7.5l-276 -116q-25 -17 -43.5 -51.5t-18.5 -65.5v-359z" />
+<glyph unicode="&#xe180;" d="M100 0h400v56q-75 0 -87.5 6t-12.5 44v394h500v-394q0 -38 -12.5 -44t-87.5 -6v-56h400v56q-4 0 -11 0.5t-24 3t-30 7t-24 15t-11 24.5v888q0 22 25 34.5t50 13.5l25 2v56h-400v-56q75 0 87.5 -6t12.5 -44v-394h-500v394q0 38 12.5 44t87.5 6v56h-400v-56q4 0 11 -0.5 t24 -3t30 -7t24 -15t11 -24.5v-888q0 -22 -25 -34.5t-50 -13.5l-25 -2v-56z" />
+<glyph unicode="&#xe181;" d="M0 300q0 -41 29.5 -70.5t70.5 -29.5h300q41 0 70.5 29.5t29.5 70.5v500q0 41 -29.5 70.5t-70.5 29.5h-300q-41 0 -70.5 -29.5t-29.5 -70.5v-500zM100 100h400l200 200h105l295 98v-298h-425l-100 -100h-375zM100 300v200h300v-200h-300zM100 600v200h300v-200h-300z M100 1000h400l200 -200v-98l295 98h105v200h-425l-100 100h-375zM700 402v163l400 133v-163z" />
+<glyph unicode="&#xe182;" d="M16.5 974.5q0.5 -21.5 16 -90t46.5 -140t104 -177.5t175 -208q103 -103 207.5 -176t180 -103.5t137 -47t92.5 -16.5l31 1l163 162q17 18 13.5 41t-22.5 37l-192 136q-19 14 -45 12t-42 -19l-118 -118q-142 101 -268 227t-227 268l118 118q17 17 20 41.5t-11 44.5 l-139 194q-14 19 -36.5 22t-40.5 -14l-162 -162q-1 -11 -0.5 -32.5z" />
+<glyph unicode="&#xe183;" d="M0 50v212q0 20 10.5 45.5t24.5 39.5l365 303v50q0 4 1 10.5t12 22.5t30 28.5t60 23t97 10.5t97 -10t60 -23.5t30 -27.5t12 -24l1 -10v-50l365 -303q14 -14 24.5 -39.5t10.5 -45.5v-212q0 -21 -14.5 -35.5t-35.5 -14.5h-1100q-20 0 -35 14.5t-15 35.5zM0 712 q0 -21 14.5 -33.5t34.5 -8.5l202 33q20 4 34.5 21t14.5 38v146q141 24 300 24t300 -24v-146q0 -21 14.5 -38t34.5 -21l202 -33q20 -4 34.5 8.5t14.5 33.5v200q-6 8 -19 20.5t-63 45t-112 57t-171 45t-235 20.5q-92 0 -175 -10.5t-141.5 -27t-108.5 -36.5t-81.5 -40 t-53.5 -36.5t-31 -27.5l-9 -10v-200z" />
+<glyph unicode="&#xe184;" d="M100 0v100h1100v-100h-1100zM175 200h950l-125 150v250l100 100v400h-100v-200h-100v200h-200v-200h-100v200h-200v-200h-100v200h-100v-400l100 -100v-250z" />
+<glyph unicode="&#xe185;" d="M100 0h300v400q0 41 -29.5 70.5t-70.5 29.5h-100q-41 0 -70.5 -29.5t-29.5 -70.5v-400zM500 0v1000q0 41 29.5 70.5t70.5 29.5h100q41 0 70.5 -29.5t29.5 -70.5v-1000h-300zM900 0v700q0 41 29.5 70.5t70.5 29.5h100q41 0 70.5 -29.5t29.5 -70.5v-700h-300z" />
+<glyph unicode="&#xe186;" d="M-100 300v500q0 124 88 212t212 88h700q124 0 212 -88t88 -212v-500q0 -124 -88 -212t-212 -88h-700q-124 0 -212 88t-88 212zM100 200h900v700h-900v-700zM200 300h300v300h-200v100h200v100h-300v-300h200v-100h-200v-100zM600 300h200v100h100v300h-100v100h-200v-500 zM700 400v300h100v-300h-100z" />
+<glyph unicode="&#xe187;" d="M-100 300v500q0 124 88 212t212 88h700q124 0 212 -88t88 -212v-500q0 -124 -88 -212t-212 -88h-700q-124 0 -212 88t-88 212zM100 200h900v700h-900v-700zM200 300h100v200h100v-200h100v500h-100v-200h-100v200h-100v-500zM600 300h200v100h100v300h-100v100h-200v-500 zM700 400v300h100v-300h-100z" />
+<glyph unicode="&#xe188;" d="M-100 300v500q0 124 88 212t212 88h700q124 0 212 -88t88 -212v-500q0 -124 -88 -212t-212 -88h-700q-124 0 -212 88t-88 212zM100 200h900v700h-900v-700zM200 300h300v100h-200v300h200v100h-300v-500zM600 300h300v100h-200v300h200v100h-300v-500z" />
+<glyph unicode="&#xe189;" d="M-100 300v500q0 124 88 212t212 88h700q124 0 212 -88t88 -212v-500q0 -124 -88 -212t-212 -88h-700q-124 0 -212 88t-88 212zM100 200h900v700h-900v-700zM200 550l300 -150v300zM600 400l300 150l-300 150v-300z" />
+<glyph unicode="&#xe190;" d="M-100 300v500q0 124 88 212t212 88h700q124 0 212 -88t88 -212v-500q0 -124 -88 -212t-212 -88h-700q-124 0 -212 88t-88 212zM100 200h900v700h-900v-700zM200 300v500h700v-500h-700zM300 400h130q41 0 68 42t27 107t-28.5 108t-66.5 43h-130v-300zM575 549 q0 -65 27 -107t68 -42h130v300h-130q-38 0 -66.5 -43t-28.5 -108z" />
+<glyph unicode="&#xe191;" d="M-100 300v500q0 124 88 212t212 88h700q124 0 212 -88t88 -212v-500q0 -124 -88 -212t-212 -88h-700q-124 0 -212 88t-88 212zM100 200h900v700h-900v-700zM200 300h300v300h-200v100h200v100h-300v-300h200v-100h-200v-100zM601 300h100v100h-100v-100zM700 700h100 v-400h100v500h-200v-100z" />
+<glyph unicode="&#xe192;" d="M-100 300v500q0 124 88 212t212 88h700q124 0 212 -88t88 -212v-500q0 -124 -88 -212t-212 -88h-700q-124 0 -212 88t-88 212zM100 200h900v700h-900v-700zM200 300h300v400h-200v100h-100v-500zM301 400v200h100v-200h-100zM601 300h100v100h-100v-100zM700 700h100 v-400h100v500h-200v-100z" />
+<glyph unicode="&#xe193;" d="M-100 300v500q0 124 88 212t212 88h700q124 0 212 -88t88 -212v-500q0 -124 -88 -212t-212 -88h-700q-124 0 -212 88t-88 212zM100 200h900v700h-900v-700zM200 700v100h300v-300h-99v-100h-100v100h99v200h-200zM201 300v100h100v-100h-100zM601 300v100h100v-100h-100z M700 700v100h200v-500h-100v400h-100z" />
+<glyph unicode="&#xe194;" d="M4 600q0 162 80 299t217 217t299 80t299 -80t217 -217t80 -299t-80 -299t-217 -217t-299 -80t-299 80t-217 217t-80 299zM186 600q0 -171 121.5 -292.5t292.5 -121.5t292.5 121.5t121.5 292.5t-121.5 292.5t-292.5 121.5t-292.5 -121.5t-121.5 -292.5zM400 500v200 l100 100h300v-100h-300v-200h300v-100h-300z" />
+<glyph unicode="&#xe195;" d="M0 600q0 162 80 299t217 217t299 80t299 -80t217 -217t80 -299t-80 -299t-217 -217t-299 -80t-299 80t-217 217t-80 299zM182 600q0 -171 121.5 -292.5t292.5 -121.5t292.5 121.5t121.5 292.5t-121.5 292.5t-292.5 121.5t-292.5 -121.5t-121.5 -292.5zM400 400v400h300 l100 -100v-100h-100v100h-200v-100h200v-100h-200v-100h-100zM700 400v100h100v-100h-100z" />
+<glyph unicode="&#xe197;" d="M-14 494q0 -80 56.5 -137t135.5 -57h222v300h400v-300h128q120 0 205 86.5t85 207.5t-85 207t-205 86q-46 0 -90 -14q-44 97 -134.5 156.5t-200.5 59.5q-152 0 -260 -107.5t-108 -260.5q0 -25 2 -37q-66 -14 -108.5 -67.5t-42.5 -122.5zM300 200h200v300h200v-300h200 l-300 -300z" />
+<glyph unicode="&#xe198;" d="M-14 494q0 -80 56.5 -137t135.5 -57h8l414 414l403 -403q94 26 154.5 104.5t60.5 178.5q0 120 -85 206.5t-205 86.5q-46 0 -90 -14q-44 97 -134.5 156.5t-200.5 59.5q-152 0 -260 -107.5t-108 -260.5q0 -25 2 -37q-66 -14 -108.5 -67.5t-42.5 -122.5zM300 200l300 300 l300 -300h-200v-300h-200v300h-200z" />
+<glyph unicode="&#xe199;" d="M100 200h400v-155l-75 -45h350l-75 45v155h400l-270 300h170l-270 300h170l-300 333l-300 -333h170l-270 -300h170z" />
+<glyph unicode="&#xe200;" d="M121 700q0 -53 28.5 -97t75.5 -65q-4 -16 -4 -38q0 -74 52.5 -126.5t126.5 -52.5q56 0 100 30v-306l-75 -45h350l-75 45v306q46 -30 100 -30q74 0 126.5 52.5t52.5 126.5q0 24 -9 55q50 32 79.5 83t29.5 112q0 90 -61.5 155.5t-150.5 71.5q-26 89 -99.5 145.5 t-167.5 56.5q-116 0 -197.5 -81.5t-81.5 -197.5q0 -4 1 -11.5t1 -11.5q-14 2 -23 2q-74 0 -126.5 -52.5t-52.5 -126.5z" />
+</font>
+</defs></svg> 

src/libs/fmt/doc/_templates/layout.html

@@ -0,0 +1,148 @@
+{% extends "!layout.html" %}
+
+{% block extrahead %}
+<meta name="description" content="Small, safe and fast formatting library">
+<meta name="keywords" content="C++, formatting, printf, string, library">
+<meta name="author" content="Victor Zverovich">
+<link rel="stylesheet" href="_static/fmt.css">
+{# Google Analytics #}
+<script async src="https://www.googletagmanager.com/gtag/js?id=UA-20116650-4"></script>
+<script>
+  window.dataLayer = window.dataLayer || [];
+  function gtag(){dataLayer.push(arguments);}
+  gtag('js', new Date());
+
+  gtag('config', 'UA-20116650-4');
+</script>
+{% endblock %}
+
+{%- macro searchform(classes, button) %}
+<form class="{{classes}}" role="search" action="{{ pathto('search') }}"
+      method="get">
+  <div class="form-group">
+    <input type="text" name="q" class="form-control"
+           {{ 'placeholder="Search"' if not button }} >
+  </div>
+  <input type="hidden" name="check_keywords" value="yes" />
+  <input type="hidden" name="area" value="default" />
+  {% if button %}
+    <input type="submit" class="btn btn-default" value="search">
+  {% endif %}
+</form>
+{%- endmacro %}
+
+{% block header %}
+<nav class="navbar navbar-inverse">
+  <div class="tb-container">
+    <div class="row">
+      <div class="navbar-content">
+        {# Brand and toggle get grouped for better mobile display #}
+        <div class="navbar-header">
+          <button type="button" class="navbar-toggle collapsed"
+                  data-toggle="collapse" data-target=".navbar-collapse">
+            <span class="sr-only">Toggle navigation</span>
+            <span class="icon-bar"></span>
+            <span class="icon-bar"></span>
+            <span class="icon-bar"></span>
+          </button>
+          <a class="navbar-brand" href="index.html">{fmt}</a>
+        </div>
+
+        {# Collect the nav links, forms, and other content for toggling #}
+        <div class="collapse navbar-collapse">
+          <ul class="nav navbar-nav">
+            <li class="dropdown">
+              <a href="#" class="dropdown-toggle" data-toggle="dropdown"
+                 role="button" aria-expanded="false">{{ version }}
+                <span class="caret"></span></a>
+              <ul class="dropdown-menu" role="menu">
+                {% for v in versions.split(',') %}
+                <li><a href="https://fmt.dev/{{v}}">{{v}}</a></li>
+                {% endfor %}
+              </ul>
+            </li>
+            {% for name in ['Contents', 'Usage', 'API', 'Syntax'] %}
+              {% if pagename == name.lower() %}
+              <li class="active"><a href="{{name.lower()}}.html">{{name}}
+                <span class="sr-only">(current)</span></a></li>
+              {%else%}
+              <li><a href="{{name.lower()}}.html">{{name}}</a></li>
+              {%endif%}
+            {% endfor %}
+          </ul>
+          {% if pagename != 'search' %}
+            {{ searchform('navbar-form navbar-right', False) }}
+          {%endif%}
+        </div> {# /.navbar-collapse #}
+      </div> {# /.col-md-offset-2 #}
+    </div> {# /.row #}
+  </div> {# /.tb-container #}
+</nav>
+{% if pagename == "index" %}
+{% set download_url = 'https://github.com/fmtlib/fmt/releases/download' %}
+<div class="jumbotron">
+  <div class="tb-container">
+    <h1>{fmt}</h1>
+    <p class="lead">A modern formatting library</p>
+    <div class="btn-group" role="group">
+      {% set name = 'fmt' if version.split('.')[0]|int >= 3 else 'cppformat' %}
+      <a class="btn btn-success"
+         href="{{download_url}}/{{version}}/{{name}}-{{version}}.zip">
+           <span class="glyphicon glyphicon-download"></span> Download
+      </a>
+      <button type="button" class="btn btn-success dropdown-toggle"
+        data-toggle="dropdown"><span class="caret"></span></button>
+      <ul class="dropdown-menu">
+      {% for v in versions.split(',') %}
+      {% set name = 'fmt' if v.split('.')[0]|int >= 3 else 'cppformat' %}
+        <li><a href="{{download_url}}/{{v}}/{{name}}-{{v}}.zip">Version {{v}}
+          </a></li>
+      {% endfor %}
+      </ul>
+    </div>
+  </div>
+</div>
+{% endif %}
+{% endblock %}
+
+{# Disable relbars. #}
+{% block relbar1 %}
+{% endblock %}
+{% block relbar2 %}
+{% endblock %}
+
+{% block content %}
+<div class="tb-container">
+  <div class="row">
+    {# Sidebar is currently disabled.
+    <div class="bs-sidebar">
+      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
+        <div class="sphinxsidebarwrapper">
+          {%- block sidebarlogo %}
+          {%- if logo %}
+            <p class="logo"><a href="{{ pathto(master_doc) }}">
+              <img class="logo" src="{{ pathto('_static/' + logo, 1) }}"
+                   alt="Logo"/>
+            </a></p>
+          {%- endif %}
+          {%- endblock %}
+          {%- for sidebartemplate in sidebars %}
+          {%- include sidebartemplate %}
+          {%- endfor %}
+        </div>
+      </div>
+    </div>
+    #}
+
+    <div class="content">
+      {% block body %} {% endblock %}
+    </div>
+  </div>
+</div>
+{% endblock %}
+
+{% block footer %}
+{{ super() }}
+{# Placed at the end of the document so the pages load faster. #}
+<script src="_static/bootstrap.min.js"></script>
+{% endblock %}

src/libs/fmt/doc/_templates/search.html

@@ -0,0 +1,55 @@
+{#
+    basic/search.html
+    ~~~~~~~~~~~~~~~~~
+
+    Template for the search page.
+
+    :copyright: Copyright 2007-2015 by the Sphinx team, see AUTHORS.
+    :license: BSD, see LICENSE for details.
+#}
+{%- extends "layout.html" %}
+{% set title = _('Search') %}
+{% set script_files = script_files + ['_static/searchtools.js'] %}
+{% block extrahead %}
+  <script type="text/javascript">
+    jQuery(function() { Search.loadIndex("{{ pathto('searchindex.js', 1) }}"); });
+  </script>
+  {# this is used when loading the search index using $.ajax fails,
+     such as on Chrome for documents on localhost #}
+  <script type="text/javascript" id="searchindexloader"></script>
+  {{ super() }}
+{% endblock %}
+{% block body %}
+  <h1 id="search-documentation">{{ _('Search') }}</h1>
+  <div id="fallback" class="admonition warning">
+  <script type="text/javascript">$('#fallback').hide();</script>
+  <p>
+    {% trans %}Please activate JavaScript to enable the search
+    functionality.{% endtrans %}
+  </p>
+  </div>
+  <p>
+    {% trans %}From here you can search these documents. Enter your search
+    words into the box below and click "search". Note that the search
+    function will automatically search for all of the words. Pages
+    containing fewer words won't appear in the result list.{% endtrans %}
+  </p>
+  {{ searchform('form-inline', True) }}
+  {% if search_performed %}
+    <h2>{{ _('Search Results') }}</h2>
+    {% if not search_results %}
+      <p>{{ _('Your search did not match any documents. Please make sure that all words are spelled correctly and that you\'ve selected enough categories.') }}</p>
+    {% endif %}
+  {% endif %}
+  <div id="search-results">
+  {% if search_results %}
+    <ul>
+    {% for href, caption, context in search_results %}
+      <li><a href="{{ pathto(item.href) }}">{{ caption }}</a>
+        <div class="context">{{ context|e }}</div>
+      </li>
+    {% endfor %}
+    </ul>
+  {% endif %}
+  </div>
+{% endblock %}

src/libs/fmt/doc/api.rst

@@ -0,0 +1,616 @@
+.. _string-formatting-api:
+
+*************
+API Reference
+*************
+
+The {fmt} library API consists of the following parts:
+
+* :ref:`fmt/core.h <core-api>`: the core API providing main formatting functions
+  for ``char``/UTF-8 with C++20 compile-time checks and minimal dependencies
+* :ref:`fmt/format.h <format-api>`: the full format API providing additional
+  formatting functions and locale support
+* :ref:`fmt/ranges.h <ranges-api>`: formatting of ranges and tuples
+* :ref:`fmt/chrono.h <chrono-api>`: date and time formatting
+* :ref:`fmt/std.h <std-api>`: formatters for standard library types
+* :ref:`fmt/compile.h <compile-api>`: format string compilation
+* :ref:`fmt/color.h <color-api>`: terminal color and text style
+* :ref:`fmt/os.h <os-api>`: system APIs
+* :ref:`fmt/ostream.h <ostream-api>`: ``std::ostream`` support
+* :ref:`fmt/printf.h <printf-api>`: ``printf`` formatting
+* :ref:`fmt/xchar.h <xchar-api>`: optional ``wchar_t`` support 
+
+All functions and types provided by the library reside in namespace ``fmt`` and
+macros have prefix ``FMT_``.
+
+.. _core-api:
+
+Core API
+========
+
+``fmt/core.h`` defines the core API which provides main formatting functions
+for ``char``/UTF-8 with C++20 compile-time checks. It has minimal include
+dependencies for better compile times. This header is only beneficial when
+using {fmt} as a library and not in the header-only mode.
+
+The following functions use :ref:`format string syntax <syntax>`
+similar to that of Python's `str.format
+<https://docs.python.org/3/library/stdtypes.html#str.format>`_.
+They take *fmt* and *args* as arguments.
+
+*fmt* is a format string that contains literal text and replacement fields
+surrounded by braces ``{}``. The fields are replaced with formatted arguments
+in the resulting string. `~fmt::format_string` is a format string which can be
+implicitly constructed from a string literal or a ``constexpr`` string and is
+checked at compile time in C++20. To pass a runtime format string wrap it in
+`fmt::runtime`.
+
+*args* is an argument list representing objects to be formatted.
+
+.. _format:
+
+.. doxygenfunction:: format(format_string<T...> fmt, T&&... args) -> std::string
+.. doxygenfunction:: vformat(string_view fmt, format_args args) -> std::string
+
+.. doxygenfunction:: format_to(OutputIt out, format_string<T...> fmt, T&&... args) -> OutputIt
+.. doxygenfunction:: format_to_n(OutputIt out, size_t n, format_string<T...> fmt, T&&... args) -> format_to_n_result<OutputIt>
+.. doxygenfunction:: formatted_size(format_string<T...> fmt, T&&... args) -> size_t
+
+.. doxygenstruct:: fmt::format_to_n_result
+   :members:
+
+.. _print:
+
+.. doxygenfunction:: fmt::print(format_string<T...> fmt, T&&... args)
+.. doxygenfunction:: fmt::vprint(string_view fmt, format_args args)
+
+.. doxygenfunction:: print(std::FILE *f, format_string<T...> fmt, T&&... args)
+.. doxygenfunction:: vprint(std::FILE *f, string_view fmt, format_args args)
+
+Compile-Time Format String Checks
+---------------------------------
+
+Compile-time checks are enabled by default on compilers that support C++20
+``consteval``. On older compilers you can use the ``FMT_STRING`` macro defined
+in ``fmt/format.h`` instead. It requires C++14 and is a no-op in C++11.
+
+.. doxygendefine:: FMT_STRING
+
+To force the use of legacy compile-time checks, define the preprocessor variable
+``FMT_ENFORCE_COMPILE_STRING``. When set, functions accepting ``FMT_STRING``
+will fail to compile with regular strings. Runtime-checked formatting is still
+possible using ``fmt::vformat``, ``fmt::vprint``, etc.
+
+.. doxygenclass:: fmt::basic_format_string
+   :members:
+
+.. doxygentypedef:: fmt::format_string
+
+.. doxygenfunction:: fmt::runtime(string_view) -> basic_runtime<char>
+
+Named Arguments
+---------------
+
+.. doxygenfunction:: fmt::arg(const S&, const T&)
+
+Named arguments are not supported in compile-time checks at the moment.
+
+Argument Lists
+--------------
+
+You can create your own formatting function with compile-time checks and small
+binary footprint, for example (https://godbolt.org/z/oba4Mc):
+
+.. code:: c++
+
+    #include <fmt/format.h>
+
+    void vlog(const char* file, int line, fmt::string_view format,
+              fmt::format_args args) {
+      fmt::print("{}: {}: ", file, line);
+      fmt::vprint(format, args);
+    }
+
+    template <typename S, typename... Args>
+    void log(const char* file, int line, const S& format, Args&&... args) {
+      vlog(file, line, format, fmt::make_format_args(args...));
+    }
+
+    #define MY_LOG(format, ...) \
+      log(__FILE__, __LINE__, FMT_STRING(format), __VA_ARGS__)
+
+    MY_LOG("invalid squishiness: {}", 42);
+
+Note that ``vlog`` is not parameterized on argument types which improves compile
+times and reduces binary code size compared to a fully parameterized version.
+
+.. doxygenfunction:: fmt::make_format_args(const Args&...)
+
+.. doxygenclass:: fmt::format_arg_store
+   :members:
+
+.. doxygenclass:: fmt::dynamic_format_arg_store
+   :members:
+
+.. doxygenclass:: fmt::basic_format_args
+   :members:
+
+.. doxygentypedef:: fmt::format_args
+
+.. doxygenclass:: fmt::basic_format_arg
+   :members:
+
+.. doxygenclass:: fmt::basic_format_parse_context
+   :members:
+
+.. doxygenclass:: fmt::basic_format_context
+   :members:
+
+.. doxygentypedef:: fmt::format_context
+
+Compatibility
+-------------
+
+.. doxygenclass:: fmt::basic_string_view
+   :members:
+
+.. doxygentypedef:: fmt::string_view
+
+Locale
+------
+
+All formatting is locale-independent by default. Use the ``'L'`` format
+specifier to insert the appropriate number separator characters from the
+locale::
+
+  #include <fmt/core.h>
+  #include <locale>
+
+  std::locale::global(std::locale("en_US.UTF-8"));
+  auto s = fmt::format("{:L}", 1000000);  // s == "1,000,000"
+
+.. _format-api:
+
+Format API
+==========
+
+``fmt/format.h`` defines the full format API providing additional formatting
+functions and locale support.
+
+.. _udt:
+
+Formatting User-Defined Types
+-----------------------------
+
+The {fmt} library provides formatters for many standard C++ types.
+See :ref:`fmt/ranges.h <ranges-api>` for ranges and tuples including standard
+containers such as ``std::vector``, :ref:`fmt/chrono.h <chrono-api>` for date
+and time formatting and :ref:`fmt/std.h <std-api>` for path and variant 
+formatting.
+
+To make a user-defined type formattable, specialize the ``formatter<T>`` struct
+template and implement ``parse`` and ``format`` methods::
+
+  #include <fmt/format.h>
+
+  struct point {
+    double x, y;
+  };
+
+  template <> struct fmt::formatter<point> {
+    // Presentation format: 'f' - fixed, 'e' - exponential.
+    char presentation = 'f';
+
+    // Parses format specifications of the form ['f' | 'e'].
+    constexpr auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) {
+      // [ctx.begin(), ctx.end()) is a character range that contains a part of
+      // the format string starting from the format specifications to be parsed,
+      // e.g. in
+      //
+      //   fmt::format("{:f} - point of interest", point{1, 2});
+      //
+      // the range will contain "f} - point of interest". The formatter should
+      // parse specifiers until '}' or the end of the range. In this example
+      // the formatter should parse the 'f' specifier and return an iterator
+      // pointing to '}'.
+      
+      // Please also note that this character range may be empty, in case of
+      // the "{}" format string, so therefore you should check ctx.begin()
+      // for equality with ctx.end().
+
+      // Parse the presentation format and store it in the formatter:
+      auto it = ctx.begin(), end = ctx.end();
+      if (it != end && (*it == 'f' || *it == 'e')) presentation = *it++;
+
+      // Check if reached the end of the range:
+      if (it != end && *it != '}') throw format_error("invalid format");
+
+      // Return an iterator past the end of the parsed range:
+      return it;
+    }
+
+    // Formats the point p using the parsed format specification (presentation)
+    // stored in this formatter.
+    template <typename FormatContext>
+    auto format(const point& p, FormatContext& ctx) const -> decltype(ctx.out()) {
+      // ctx.out() is an output iterator to write to.
+      return presentation == 'f'
+                ? fmt::format_to(ctx.out(), "({:.1f}, {:.1f})", p.x, p.y)
+                : fmt::format_to(ctx.out(), "({:.1e}, {:.1e})", p.x, p.y);
+    }
+  };
+
+Then you can pass objects of type ``point`` to any formatting function::
+
+  point p = {1, 2};
+  std::string s = fmt::format("{:f}", p);
+  // s == "(1.0, 2.0)"
+
+You can also reuse existing formatters via inheritance or composition, for
+example::
+
+  enum class color {red, green, blue};
+
+  template <> struct fmt::formatter<color>: formatter<string_view> {
+    // parse is inherited from formatter<string_view>.
+    template <typename FormatContext>
+    auto format(color c, FormatContext& ctx) const {
+      string_view name = "unknown";
+      switch (c) {
+      case color::red:   name = "red"; break;
+      case color::green: name = "green"; break;
+      case color::blue:  name = "blue"; break;
+      }
+      return formatter<string_view>::format(name, ctx);
+    }
+  };
+
+Since ``parse`` is inherited from ``formatter<string_view>`` it will recognize
+all string format specifications, for example
+
+.. code-block:: c++
+
+   fmt::format("{:>10}", color::blue)
+
+will return ``"      blue"``.
+
+You can also write a formatter for a hierarchy of classes::
+
+  #include <type_traits>
+  #include <fmt/format.h>
+
+  struct A {
+    virtual ~A() {}
+    virtual std::string name() const { return "A"; }
+  };
+
+  struct B : A {
+    virtual std::string name() const { return "B"; }
+  };
+
+  template <typename T>
+  struct fmt::formatter<T, std::enable_if_t<std::is_base_of<A, T>::value, char>> :
+      fmt::formatter<std::string> {
+    template <typename FormatCtx>
+    auto format(const A& a, FormatCtx& ctx) const {
+      return fmt::formatter<std::string>::format(a.name(), ctx);
+    }
+  };
+
+  int main() {
+    B b;
+    A& a = b;
+    fmt::print("{}", a); // prints "B"
+  }
+
+If a type provides both a ``formatter`` specialization and an implicit
+conversion to a formattable type, the specialization takes precedence over the
+conversion.
+
+For enums {fmt} also provides the ``format_as`` extension API. To format an enum
+via this API define ``format_as`` that takes this enum and converts it to the
+underlying type. ``format_as`` should be defined in the same namespace as the
+enum.
+
+Example (https://godbolt.org/z/r7vvGE1v7)::
+
+  #include <fmt/format.h>
+
+  namespace kevin_namespacy {
+  enum class film {
+    house_of_cards, american_beauty, se7en = 7
+  };
+  auto format_as(film f) { return fmt::underlying(f); }
+  }
+
+  int main() {
+    fmt::print("{}\n", kevin_namespacy::film::se7en); // prints "7"
+  }
+
+Literal-Based API
+-----------------
+
+The following user-defined literals are defined in ``fmt/format.h``.
+
+.. doxygenfunction:: operator""_a()
+
+Utilities
+---------
+
+.. doxygenfunction:: fmt::ptr(T p) -> const void*
+.. doxygenfunction:: fmt::ptr(const std::unique_ptr<T> &p) -> const void*
+.. doxygenfunction:: fmt::ptr(const std::shared_ptr<T> &p) -> const void*
+
+.. doxygenfunction:: fmt::underlying(Enum e) -> typename std::underlying_type<Enum>::type
+
+.. doxygenfunction:: fmt::to_string(const T &value) -> std::string
+
+.. doxygenfunction:: fmt::join(Range &&range, string_view sep) -> join_view<detail::iterator_t<Range>, detail::sentinel_t<Range>>
+
+.. doxygenfunction:: fmt::join(It begin, Sentinel end, string_view sep) -> join_view<It, Sentinel>
+
+.. doxygenfunction:: fmt::group_digits(T value) -> group_digits_view<T>
+
+.. doxygenclass:: fmt::detail::buffer
+   :members:
+
+.. doxygenclass:: fmt::basic_memory_buffer
+   :protected-members:
+   :members:
+
+System Errors
+-------------
+
+{fmt} does not use ``errno`` to communicate errors to the user, but it may call
+system functions which set ``errno``. Users should not make any assumptions
+about the value of ``errno`` being preserved by library functions.
+
+.. doxygenfunction:: fmt::system_error
+
+.. doxygenfunction:: fmt::format_system_error
+
+Custom Allocators
+-----------------
+
+The {fmt} library supports custom dynamic memory allocators.
+A custom allocator class can be specified as a template argument to
+:class:`fmt::basic_memory_buffer`::
+
+    using custom_memory_buffer = 
+      fmt::basic_memory_buffer<char, fmt::inline_buffer_size, custom_allocator>;
+
+It is also possible to write a formatting function that uses a custom
+allocator::
+
+    using custom_string =
+      std::basic_string<char, std::char_traits<char>, custom_allocator>;
+
+    custom_string vformat(custom_allocator alloc, fmt::string_view format_str,
+                          fmt::format_args args) {
+      auto buf = custom_memory_buffer(alloc);
+      fmt::vformat_to(std::back_inserter(buf), format_str, args);
+      return custom_string(buf.data(), buf.size(), alloc);
+    }
+
+    template <typename ...Args>
+    inline custom_string format(custom_allocator alloc,
+                                fmt::string_view format_str,
+                                const Args& ... args) {
+      return vformat(alloc, format_str, fmt::make_format_args(args...));
+    }
+
+The allocator will be used for the output container only. Formatting functions
+normally don't do any allocations for built-in and string types except for
+non-default floating-point formatting that occasionally falls back on
+``sprintf``.
+
+.. _ranges-api:
+
+Range and Tuple Formatting
+==========================
+
+The library also supports convenient formatting of ranges and tuples::
+
+  #include <fmt/ranges.h>
+
+  std::tuple<char, int, float> t{'a', 1, 2.0f};
+  // Prints "('a', 1, 2.0)"
+  fmt::print("{}", t);
+
+
+NOTE: currently, the overload of ``fmt::join`` for iterables exists in the main
+``format.h`` header, but expect this to change in the future.
+
+Using ``fmt::join``, you can separate tuple elements with a custom separator::
+
+  #include <fmt/ranges.h>
+
+  std::tuple<int, char> t = {1, 'a'};
+  // Prints "1, a"
+  fmt::print("{}", fmt::join(t, ", "));
+
+.. _chrono-api:
+
+Date and Time Formatting
+========================
+
+``fmt/chrono.h`` provides formatters for
+
+* `std::chrono::duration <https://en.cppreference.com/w/cpp/chrono/duration>`_
+* `std::chrono::time_point
+  <https://en.cppreference.com/w/cpp/chrono/time_point>`_
+* `std::tm <https://en.cppreference.com/w/cpp/chrono/c/tm>`_
+
+The format syntax is described in :ref:`chrono-specs`.
+
+**Example**::
+
+  #include <fmt/chrono.h>
+
+  int main() {
+    std::time_t t = std::time(nullptr);
+
+    // Prints "The date is 2020-11-07." (with the current date):
+    fmt::print("The date is {:%Y-%m-%d}.", fmt::localtime(t));
+
+    using namespace std::literals::chrono_literals;
+
+    // Prints "Default format: 42s 100ms":
+    fmt::print("Default format: {} {}\n", 42s, 100ms);
+
+    // Prints "strftime-like format: 03:15:30":
+    fmt::print("strftime-like format: {:%H:%M:%S}\n", 3h + 15min + 30s);
+  }
+
+.. doxygenfunction:: localtime(std::time_t time)
+
+.. doxygenfunction:: gmtime(std::time_t time)
+
+.. _std-api:
+
+Standard Library Types Formatting
+=================================
+
+``fmt/std.h`` provides formatters for:
+
+* `std::filesystem::path <https://en.cppreference.com/w/cpp/filesystem/path>`_
+* `std::thread::id <https://en.cppreference.com/w/cpp/thread/thread/id>`_
+* `std::monostate <https://en.cppreference.com/w/cpp/utility/variant/monostate>`_
+* `std::variant <https://en.cppreference.com/w/cpp/utility/variant/variant>`_
+
+Formatting Variants
+-------------------
+
+A ``std::variant`` is only formattable if every variant alternative is formattable, and requires the
+``__cpp_lib_variant`` `library feature <https://en.cppreference.com/w/cpp/feature_test>`_.
+  
+**Example**::
+
+  #include <fmt/std.h>
+
+  std::variant<char, float> v0{'x'};
+  // Prints "variant('x')"
+  fmt::print("{}", v0);
+
+  std::variant<std::monostate, char> v1;
+  // Prints "variant(monostate)"
+
+.. _compile-api:
+
+Format String Compilation
+=========================
+
+``fmt/compile.h`` provides format string compilation enabled via the
+``FMT_COMPILE`` macro or the ``_cf`` user-defined literal. Format strings
+marked with ``FMT_COMPILE`` or ``_cf`` are parsed, checked and converted into
+efficient formatting code at compile-time. This supports arguments of built-in
+and string types as well as user-defined types with ``constexpr`` ``parse``
+functions in their ``formatter`` specializations. Format string compilation can
+generate more binary code compared to the default API and is only recommended in
+places where formatting is a performance bottleneck.
+
+.. doxygendefine:: FMT_COMPILE
+
+.. doxygenfunction:: operator""_cf()
+
+.. _color-api:
+
+Terminal Color and Text Style
+=============================
+
+``fmt/color.h`` provides support for terminal color and text style output.
+
+.. doxygenfunction:: print(const text_style &ts, const S &format_str, const Args&... args)
+
+.. doxygenfunction:: fg(detail::color_type)
+
+.. doxygenfunction:: bg(detail::color_type)
+
+.. doxygenfunction:: styled(const T& value, text_style ts)
+
+.. _os-api:
+
+System APIs
+===========
+
+.. doxygenclass:: fmt::ostream
+   :members:
+
+.. doxygenfunction:: fmt::windows_error
+   :members:
+
+.. _ostream-api:
+
+``std::ostream`` Support
+========================
+
+``fmt/ostream.h`` provides ``std::ostream`` support including formatting of
+user-defined types that have an overloaded insertion operator (``operator<<``).
+In order to make a type formattable via ``std::ostream`` you should provide a
+``formatter`` specialization inherited from ``ostream_formatter``::
+
+  #include <fmt/ostream.h>
+
+  struct date {
+    int year, month, day;
+
+    friend std::ostream& operator<<(std::ostream& os, const date& d) {
+      return os << d.year << '-' << d.month << '-' << d.day;
+    }
+  };
+
+  template <> struct fmt::formatter<date> : ostream_formatter {};
+
+  std::string s = fmt::format("The date is {}", date{2012, 12, 9});
+  // s == "The date is 2012-12-9"
+
+.. doxygenfunction:: streamed(const T &)
+
+.. doxygenfunction:: print(std::ostream &os, format_string<T...> fmt, T&&... args)
+
+.. _printf-api:
+
+``printf`` Formatting
+=====================
+
+The header ``fmt/printf.h`` provides ``printf``-like formatting functionality.
+The following functions use `printf format string syntax
+<https://pubs.opengroup.org/onlinepubs/009695399/functions/fprintf.html>`_ with
+the POSIX extension for positional arguments. Unlike their standard
+counterparts, the ``fmt`` functions are type-safe and throw an exception if an
+argument type doesn't match its format specification.
+
+.. doxygenfunction:: printf(const S &format_str, const T&... args)
+
+.. doxygenfunction:: fprintf(std::FILE *f, const S &fmt, const T&... args) -> int
+
+.. doxygenfunction:: sprintf(const S&, const T&...)
+
+.. _xchar-api:
+
+``wchar_t`` Support
+===================
+
+The optional header ``fmt/xchar.h`` provides support for ``wchar_t`` and exotic
+character types.
+
+.. doxygenstruct:: fmt::is_char
+
+.. doxygentypedef:: fmt::wstring_view
+
+.. doxygentypedef:: fmt::wformat_context
+
+.. doxygenfunction:: fmt::to_wstring(const T &value)
+
+Compatibility with C++20 ``std::format``
+========================================
+
+{fmt} implements nearly all of the `C++20 formatting library
+<https://en.cppreference.com/w/cpp/utility/format>`_ with the following
+differences:
+
+* Names are defined in the ``fmt`` namespace instead of ``std`` to avoid
+  collisions with standard library implementations.
+* Width calculation doesn't use grapheme clusterization. The latter has been
+  implemented in a separate branch but hasn't been integrated yet.
+* Most C++20 chrono types are not supported yet.