Listen to the audio focus event for MSE/EME

media/base/android/media_source_player.cc

 // Copyright (c) 2013 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 "media/base/android/media_source_player.h"
 
 #include <limits>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 176 matching lines @@
 void MediaSourcePlayer::Release() {
   DVLOG(1) << __FUNCTION__;
 
   audio_decoder_job_->ReleaseDecoderResources();
   video_decoder_job_->ReleaseDecoderResources();
 
   // Prevent player restart, including job re-creation attempts.
   playing_ = false;
 
   decoder_starvation_callback_.Cancel();
+  DetachListener();
 }
 
 void MediaSourcePlayer::SetVolume(double volume) {
   audio_decoder_job_->SetVolume(volume);
 }
 
 bool MediaSourcePlayer::IsSurfaceInUse() const {
   return video_decoder_job_ && video_decoder_job_->is_decoding();
 }
 
@@ skipping 16 matching lines @@
 void MediaSourcePlayer::StartInternal() {
   DVLOG(1) << __FUNCTION__;
   // If there are pending events, wait for them finish.
   if (pending_event_ != NO_EVENT_PENDING)
     return;
 
   // When we start, we'll have new demuxed data coming in. This new data could
   // be clear (not encrypted) or encrypted with different keys. So
   // |is_waiting_for_key_| condition may not be true anymore.
   is_waiting_for_key_ = false;
+  AttachListener(NULL);
 
   SetPendingEvent(PREFETCH_REQUEST_EVENT_PENDING);
   ProcessPendingEvents();
 }
 
 void MediaSourcePlayer::OnDemuxerConfigsAvailable(
     const DemuxerConfigs& configs) {
   DVLOG(1) << __FUNCTION__;
   DCHECK(!HasAudio() && !HasVideo());
   duration_ = configs.duration;
@@ skipping 530 matching lines @@
   // support setMediaKeys(0) (see http://crbug.com/330324), or when we release
   // MediaDrm when the video is paused, or when the device goes to sleep (see
   // http://crbug.com/272421).
   audio_decoder_job_->SetDrmBridge(NULL);
   video_decoder_job_->SetDrmBridge(NULL);
   cdm_registration_id_ = 0;
   drm_bridge_ = NULL;
 }
 
 }  // namespace media