Split iSAC encoder/decoder: Test more cases (and make sure they work)

webrtc/modules/audio_coding/codecs/isac/main/interface/isac.h

 /*
  *  Copyright (c) 2011 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 251 matching lines @@
    *
    * Return value               : 0  - ok
    *                             -1 - Error
    */
 
   int16_t WebRtcIsac_Control(
       ISACStruct*   ISAC_main_inst,
       int32_t rate,
       int framesize);
 
+  void WebRtcIsac_SetInitialBweBottleneck(ISACStruct* ISAC_main_inst,
+                                          int bottleneck_bits_per_second);
 
   /******************************************************************************
    * WebRtcIsac_ControlBwe(...)
    *
    * This function sets the initial values of bottleneck and frame-size if
    * iSAC is used in channel-adaptive mode. Therefore, this API is not
    * applicable if the codec is created to operate in super-wideband mode.
    *
    * Through this API, users can enforce a frame-size for all values of
    * bottleneck. Then iSAC will not automatically change the frame-size.
@@ skipping 417 matching lines @@
    * Return value              : >0 - number of samples in decoded vector
    *                             -1 - Error
    */
   int WebRtcIsac_DecodeRcu(
       ISACStruct*           ISAC_main_inst,
       const uint8_t* encoded,
       int16_t         len,
       int16_t*        decoded,
       int16_t*        speechType);
 
-  /* Fills in an IsacBandwidthInfo struct. */
+  /* Fills in an IsacBandwidthInfo struct. |inst| should be a decoder. */
   void WebRtcIsac_GetBandwidthInfo(ISACStruct* inst, IsacBandwidthInfo* bwinfo);
 
-  /* Uses the values from an IsacBandwidthInfo struct. */
+  /* Uses the values from an IsacBandwidthInfo struct. |inst| should be an
+     encoder. */
   void WebRtcIsac_SetBandwidthInfo(ISACStruct* inst,
                                    const IsacBandwidthInfo* bwinfo);
 
+  /* If |inst| is a decoder but not an encoder: tell it what sample rate the
+     encoder is using, for bandwidth estimation purposes. */
+  void WebRtcIsac_SetEncSampRateInDecoder(ISACStruct* inst, int sample_rate_hz);
+
 #if defined(__cplusplus)
 }
 #endif
 
 
 
 #endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_INTERFACE_ISAC_H_ */