iSAC: Make separate AudioEncoder and AudioDecoder objects

webrtc/modules/audio_coding/codecs/isac/fix/source/isacfix.c

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 223 matching lines @@
   WebRtcIsacfix_HighpassFilterFixDec32 =
       WebRtcIsacfix_HighpassFilterFixDec32MIPS;
 #endif
 #if defined(MIPS_DSP_R2_LE)
   WebRtcIsacfix_CalculateResidualEnergy =
       WebRtcIsacfix_CalculateResidualEnergyMIPS;
 #endif
 }
 #endif
 
+static void InitFunctionPointers(void) {
+  WebRtcIsacfix_AutocorrFix = WebRtcIsacfix_AutocorrC;
+  WebRtcIsacfix_FilterMaLoopFix = WebRtcIsacfix_FilterMaLoopC;
+  WebRtcIsacfix_CalculateResidualEnergy =
+      WebRtcIsacfix_CalculateResidualEnergyC;
+  WebRtcIsacfix_AllpassFilter2FixDec16 = WebRtcIsacfix_AllpassFilter2FixDec16C;
+  WebRtcIsacfix_HighpassFilterFixDec32 = WebRtcIsacfix_HighpassFilterFixDec32C;
+  WebRtcIsacfix_Time2Spec = WebRtcIsacfix_Time2SpecC;
+  WebRtcIsacfix_Spec2Time = WebRtcIsacfix_Spec2TimeC;
+  WebRtcIsacfix_MatrixProduct1 = WebRtcIsacfix_MatrixProduct1C;
+  WebRtcIsacfix_MatrixProduct2 = WebRtcIsacfix_MatrixProduct2C;
+
+#ifdef WEBRTC_DETECT_NEON
+  if ((WebRtc_GetCPUFeaturesARM() & kCPUFeatureNEON) != 0) {
+    WebRtcIsacfix_InitNeon();
+  }
+#elif defined(WEBRTC_HAS_NEON)
+  WebRtcIsacfix_InitNeon();
+#endif
+
+#if defined(MIPS32_LE)
+  WebRtcIsacfix_InitMIPS();
+#endif
+}
+
 /****************************************************************************
  * WebRtcIsacfix_EncoderInit(...)
  *
  * This function initializes a ISAC instance prior to the encoder calls.
  *
  * Input:
  *      - ISAC_main_inst    : ISAC instance.
  *      - CodingMode        : 0 -> Bit rate and frame length are automatically
  *                                 adjusted to available bandwidth on
  *                                 transmission channel.
@@ skipping 56 matching lines @@
 
   /* Init the bistream data area to zero */
   for (k=0; k<STREAM_MAXW16_60MS; k++){
     ISAC_inst->ISACenc_obj.bitstr_obj.stream[k] = 0;
   }
 
 #ifdef WEBRTC_ISAC_FIX_NB_CALLS_ENABLED
   WebRtcIsacfix_InitPostFilterbank(&ISAC_inst->ISACenc_obj.interpolatorstr_obj);
 #endif
 
-  // Initiaze function pointers.
-  WebRtcIsacfix_AutocorrFix = WebRtcIsacfix_AutocorrC;
-  WebRtcIsacfix_FilterMaLoopFix = WebRtcIsacfix_FilterMaLoopC;
-  WebRtcIsacfix_CalculateResidualEnergy =
-      WebRtcIsacfix_CalculateResidualEnergyC;
-  WebRtcIsacfix_AllpassFilter2FixDec16 = WebRtcIsacfix_AllpassFilter2FixDec16C;
-  WebRtcIsacfix_HighpassFilterFixDec32 = WebRtcIsacfix_HighpassFilterFixDec32C;
-  WebRtcIsacfix_Time2Spec = WebRtcIsacfix_Time2SpecC;
-  WebRtcIsacfix_Spec2Time = WebRtcIsacfix_Spec2TimeC;
-  WebRtcIsacfix_MatrixProduct1 = WebRtcIsacfix_MatrixProduct1C;
-  WebRtcIsacfix_MatrixProduct2 = WebRtcIsacfix_MatrixProduct2C;
-
-#ifdef WEBRTC_DETECT_NEON
-  if ((WebRtc_GetCPUFeaturesARM() & kCPUFeatureNEON) != 0) {
-    WebRtcIsacfix_InitNeon();
-  }
-#elif defined(WEBRTC_HAS_NEON)
-  WebRtcIsacfix_InitNeon();
-#endif
-
-#if defined(MIPS32_LE)
-  WebRtcIsacfix_InitMIPS();
-#endif
+  InitFunctionPointers();
 
   return statusInit;
 }
 
 /* Read the given number of bytes of big-endian 16-bit integers from |src| and
    write them to |dest| in host endian. If |nbytes| is odd, the number of
    output elements is rounded up, and the least significant byte of the last
    element is set to 0. */
 static void read_be16(const uint8_t* src, size_t nbytes, uint16_t* dest) {
   size_t i;
@@ skipping 215 matching lines @@
  *
  * Return value
  *                          :  0 - Ok
  *                            -1 - Error
  */
 
 int16_t WebRtcIsacfix_DecoderInit(ISACFIX_MainStruct *ISAC_main_inst)
 {
   ISACFIX_SubStruct *ISAC_inst;
 
+  InitFunctionPointers();
+
   /* typecast pointer to real structure */
   ISAC_inst = (ISACFIX_SubStruct *)ISAC_main_inst;
 
   /* flag decoder init */
   ISAC_inst->initflag |= 1;
 
   WebRtcIsacfix_InitMaskingDec(&ISAC_inst->ISACdec_obj.maskfiltstr_obj);
   WebRtcIsacfix_InitPostFilterbank(&ISAC_inst->ISACdec_obj.postfiltbankstr_obj);
   WebRtcIsacfix_InitPitchFilter(&ISAC_inst->ISACdec_obj.pitchfiltstr_obj);
 
@@ skipping 957 matching lines @@
   assert(inst->initflag & 1);  // Decoder initialized.
   WebRtcIsacfixBw_GetBandwidthInfo(&inst->bwestimator_obj, bwinfo);
 }
 
 void WebRtcIsacfix_SetBandwidthInfo(ISACFIX_MainStruct* ISAC_main_inst,
                                     const IsacBandwidthInfo* bwinfo) {
   ISACFIX_SubStruct* inst = (ISACFIX_SubStruct*)ISAC_main_inst;
   assert(inst->initflag & 2);  // Encoder initialized.
   WebRtcIsacfixBw_SetBandwidthInfo(&inst->bwestimator_obj, bwinfo);
 }