Add support for external decoders in ACM

webrtc/modules/audio_coding/main/interface/audio_coding_module.h

 /*
  *  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 11 matching lines @@
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
 
 // forward declarations
 struct CodecInst;
 struct WebRtcRTPHeader;
 class AudioFrame;
 class RTPFragmentationHeader;
 class AudioEncoderMutable;
+class AudioDecoder;
 
 #define WEBRTC_10MS_PCM_AUDIO 960  // 16 bits super wideband 48 kHz
 
 // Callback class used for sending data ready to be packetized
 class AudioPacketizationCallback {
  public:
   virtual ~AudioPacketizationCallback() {}
 
   virtual int32_t SendData(FrameType frame_type,
                            uint8_t payload_type,
@@ skipping 527 matching lines @@
   //
   // Input:
   //   -receive_codec      : parameters of the codec to be registered, c.f.
   //                         common_types.h for the definition of
   //                         CodecInst.
   //
   // Return value:
   //   -1 if failed to register the codec
   //    0 if the codec registered successfully.
   //
-  virtual int32_t RegisterReceiveCodec(
-      const CodecInst& receive_codec) = 0;
+  virtual int RegisterReceiveCodec(const CodecInst& receive_codec) = 0;
+
+  virtual int RegisterExternalReceiveCodec(int rtp_payload_type,
+                                           AudioDecoder* external_decoder,
+                                           int sample_rate_hz,
+                                           int num_channels) = 0;
 
   ///////////////////////////////////////////////////////////////////////////
   // int32_t UnregisterReceiveCodec()
   // Unregister the codec currently registered with a specific payload type
   // from the list of possible receive codecs.
   //
   // Input:
   //   -payload_type        : The number representing the payload type to
   //                         unregister.
   //
@@ skipping 571 matching lines @@
   virtual std::vector<uint16_t> GetNackList(int round_trip_time_ms) const = 0;
 
   // Returns the timing statistics for calls to Get10MsAudio.
   virtual void GetDecodingCallStatistics(
       AudioDecodingCallStats* call_stats) const = 0;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_CODING_MAIN_INTERFACE_AUDIO_CODING_MODULE_H_