- more work on Android Oboe audio backend

src/engine/audio/Audio_AndroidOboe.h

@@ -0,0 +1,109 @@
+/* Copyright(C) 2007-2017 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 __AUDIO_ANDROID_OBOE_H
+#define __AUDIO_ANDROID_OBOE_H
+
+#ifdef TARGET_ANDROID
+
+#include "Audio_Interface.h"
+#include "Audio_Helper.h"
+#include "Audio_Resampler.h"
+#include "Audio_DataWindow.h"
+#include "../helper/HL_Pointer.h"
+#include "../helper/HL_ByteBuffer.h"
+#include "../helper/HL_Exception.h"
+#include "../helper/HL_Statistics.h"
+
+#include <memory>
+#include <string>
+
+#include "oboe/Oboe.h"
+
+namespace Audio
+{
+    class AndroidEnumerator: public Enumerator
+    {
+    public:
+        AndroidEnumerator();
+        ~AndroidEnumerator();
+
+        void open(int direction);
+        void close();
+
+        int count();
+        std::string nameAt(int index);
+        int idAt(int index);
+        int indexOfDefaultDevice();
+
+    protected:
+    };
+
+    class AndroidInputDevice: public InputDevice, public oboe::AudioStreamCallback
+    {
+    public:
+        AndroidInputDevice(int devId);
+        ~AndroidInputDevice();
+
+        bool open();
+        void close();
+        Format getFormat();
+
+        bool fakeMode();
+        void setFakeMode(bool fakemode);
+        int readBuffer(void* buffer);
+        bool active() const;
+
+        oboe::DataCallbackResult
+        onAudioReady(oboe::AudioStream *audioStream, void *audioData, int32_t numFrames);
+
+
+    protected:
+        bool mActive = false;
+        oboe::AudioStream* mRecordingStream = nullptr;
+        PResampler mResampler;
+        DataWindow mDeviceRateCache, mSdkRateCache;
+        int mDeviceRate; // Actual rate of opened recorder
+        int mBufferSize; // Size of buffer used for recording (at native sample rate)
+        DataWindow mRecorderBuffer;
+        std::condition_variable mDataCondVar;
+        int mRecorderBufferIndex;
+        std::mutex mMutex;
+    };
+
+class AndroidOutputDevice: public OutputDevice, public oboe::AudioStreamCallback
+    {
+    public:
+        AndroidOutputDevice(int devId);
+        ~AndroidOutputDevice();
+
+        bool open();
+        void close();
+        Format getFormat();
+
+        bool fakeMode();
+        void setFakeMode(bool fakemode);
+
+        oboe::DataCallbackResult onAudioReady(oboe::AudioStream *audioStream, void *audioData, int32_t numFrames);
+        void onErrorAfterClose(oboe::AudioStream *stream, oboe::Result result);
+
+        protected:
+        std::mutex mMutex;
+        int mDeviceRate = 0;
+        oboe::AudioStream* mPlayingStream = nullptr;
+        DataWindow mPlayBuffer;
+        int mBufferIndex = 0, mBufferSize = 0;
+        bool mInShutdown = false;
+        bool mActive = false;
+
+        // Statistics
+        float mRequestedFrames = 0.0, mStartTime = 0.0, mEndTime = 0.0;
+    };
+}
+
+#endif // TARGET_ANDROID
+
+#endif // __AUDIO_ANDROID_H