Adding an interface to allow extention of the audio player for CRD and iOS.

remoting/client/audio_player_android.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "remoting/client/audio_player_android.h"
 
 #include "base/logging.h"
 
 namespace remoting {
 
 const int kFrameSizeMs = 40;
 const int kNumOfBuffers = 1;
 
 static_assert(AudioPlayer::kChannels == 2,
               "AudioPlayer must be feeding 2 channels data.");
 const int kChannelMask = SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT;
 
-AudioPlayerAndroid::AudioPlayerAndroid() {
+AudioPlayerAndroid::AudioPlayerAndroid() : weak_factory_(this) {
   if (slCreateEngine(&engine_object_, 0, nullptr, 0, nullptr, nullptr) !=
           SL_RESULT_SUCCESS ||
       (*engine_object_)->Realize(engine_object_, SL_BOOLEAN_FALSE) !=
           SL_RESULT_SUCCESS ||
       (*engine_object_)
               ->GetInterface(engine_object_, SL_IID_ENGINE, &engine_) !=
           SL_RESULT_SUCCESS ||
       (*engine_)->CreateOutputMix(engine_, &output_mix_object_, 0, nullptr,
                                   nullptr) != SL_RESULT_SUCCESS ||
       (*output_mix_object_)->Realize(output_mix_object_, SL_BOOLEAN_FALSE) !=
           SL_RESULT_SUCCESS) {
     LOG(ERROR) << "Failed to initialize OpenSL ES.";
   }
 }
 
 AudioPlayerAndroid::~AudioPlayerAndroid() {
   DestroyPlayer();
   if (output_mix_object_) {
     (*output_mix_object_)->Destroy(output_mix_object_);
   }
   if (engine_object_) {
     (*engine_object_)->Destroy(engine_object_);
   }
 }
 
+base::WeakPtr<AudioPlayerAndroid> AudioPlayerAndroid::GetWeakPtr() {
+  return weak_factory_.GetWeakPtr();
+}
+
 uint32_t AudioPlayerAndroid::GetSamplesPerFrame() {
   return sample_per_frame_;
 }
 
 bool AudioPlayerAndroid::ResetAudioPlayer(
     AudioPacket::SamplingRate sampling_rate) {
   if (!output_mix_object_) {
     // output mixer not successfully created in ctor.
     return false;
   }
@@ skipping 90 matching lines @@
     (*player_object_)->Destroy(player_object_);
     player_object_ = nullptr;
   }
   frame_buffer_.reset();
   buffer_size_ = 0;
   player_ = nullptr;
   buffer_queue_ = nullptr;
 }
 
 }  // namespace remoting