- reference source code for EVS codec

src/libs/libevs/lib_com/delay_comp.cpp

@@ -0,0 +1,43 @@
+/*====================================================================================
+    EVS Codec 3GPP TS26.442 Apr 03, 2018. Version 12.11.0 / 13.6.0 / 14.2.0
+  ====================================================================================*/
+
+#include "options.h"        /* Compilation switches                   */
+#include "stl.h"
+#include "prot_fx.h"
+
+
+/*--------------------------------------------------------------------------
+*  get_delay_fx()
+*
+*  Function returns various types of delays in the codec in ms.
+*--------------------------------------------------------------------------*/
+
+Word32 get_delay_fx(            /* o  : delay value in ms                         */
+    const Word16 what_delay,    /* i  : what delay? (ENC or DEC)                  */
+    const Word32 io_fs          /* i  : input/output sampling frequency           */
+)
+{
+    Word32 delay = 0;
+
+    IF( sub(what_delay,ENC) == 0 )
+    {
+        delay = (DELAY_FIR_RESAMPL_NS + ACELP_LOOK_NS);
+        move32();
+    }
+    ELSE
+    {
+        IF( L_sub(io_fs,8000) == 0 )
+        {
+            delay = DELAY_CLDFB_NS;
+            move32();
+        }
+        ELSE
+        {
+            delay = DELAY_BWE_TOTAL_NS;
+            move32();
+        }
+    }
+
+    return delay;
+}