Add support for external decoders in ACM

webrtc/modules/audio_coding/main/acm2/acm_receive_test_oldapi.cc

 /*
  *  Copyright (c) 2014 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 125 matching lines @@
     if (RemapPltypeAndUseThisCodec(my_codec_param.plname,
                                    my_codec_param.plfreq,
                                    my_codec_param.channels,
                                    &my_codec_param.pltype)) {
       ASSERT_EQ(0, acm_->RegisterReceiveCodec(my_codec_param))
           << "Couldn't register receive codec.\n";
     }
   }
 }
 
+int AcmReceiveTestOldApi::RegisterExternalReceiveCodec(
+    int rtp_payload_type,
+    AudioDecoder* external_decoder,
+    int sample_rate_hz,
+    int num_channels) {
+  return acm_->RegisterExternalReceiveCodec(rtp_payload_type, external_decoder,
+                                            sample_rate_hz, num_channels);
+}
+
 void AcmReceiveTestOldApi::Run() {
   for (rtc::scoped_ptr<Packet> packet(packet_source_->NextPacket()); packet;
        packet.reset(packet_source_->NextPacket())) {
     // Pull audio until time to insert packet.
     while (clock_.TimeInMilliseconds() < packet->time_ms()) {
       AudioFrame output_frame;
       EXPECT_EQ(0, acm_->PlayoutData10Ms(output_freq_hz_, &output_frame));
       EXPECT_EQ(output_freq_hz_, output_frame.sample_rate_hz_);
       const int samples_per_block = output_freq_hz_ * 10 / 1000;
       EXPECT_EQ(samples_per_block, output_frame.samples_per_channel_);
@@ skipping 49 matching lines @@
   if (clock_.TimeInMilliseconds() >= last_toggle_time_ms_ + toggle_period_ms_) {
     output_freq_hz_ = (output_freq_hz_ == output_freq_hz_1_)
                           ? output_freq_hz_2_
                           : output_freq_hz_1_;
     last_toggle_time_ms_ = clock_.TimeInMilliseconds();
   }
 }
 
 }  // namespace test
 }  // namespace webrtc