Allow muting/unmuting audio through media track API

media/test/pipeline_integration_test_base.cc

 // Copyright (c) 2012 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/test/pipeline_integration_test_base.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/memory/scoped_vector.h"
@@ skipping 65 matching lines @@
     EmeInitDataType type,
     const std::vector<uint8_t>& init_data) {
   DCHECK(!init_data.empty());
   CHECK(!encrypted_media_init_data_cb_.is_null());
   encrypted_media_init_data_cb_.Run(type, init_data);
 }
 
 void PipelineIntegrationTestBase::DemuxerMediaTracksUpdatedCB(
     scoped_ptr<MediaTracks> tracks) {
   CHECK(tracks);
+  CHECK(demuxer_);
+  for (const auto& track : tracks->tracks()) {
+    demuxer_->OnTrackIdAssigned(++track_id_, track.get());
+  }
 }
 
 void PipelineIntegrationTestBase::OnEnded() {
   DCHECK(!ended_);
   ended_ = true;
   pipeline_status_ = PIPELINE_OK;
   message_loop_.PostTask(FROM_HERE, base::MessageLoop::QuitWhenIdleClosure());
 }
 
 bool PipelineIntegrationTestBase::WaitUntilOnEnded() {
@@ skipping 170 matching lines @@
                  base::Unretained(this), wait_time),
       base::TimeDelta::FromMilliseconds(10));
   message_loop_.Run();
   return (pipeline_status_ == PIPELINE_OK);
 }
 
 void PipelineIntegrationTestBase::CreateDemuxer(
     scoped_ptr<DataSource> data_source) {
   data_source_ = std::move(data_source);
 
-  Demuxer::MediaTracksUpdatedCB tracks_updated_cb =
-      base::Bind(&PipelineIntegrationTestBase::DemuxerMediaTracksUpdatedCB,
-                 base::Unretained(this));
-
 #if !defined(MEDIA_DISABLE_FFMPEG)
   demuxer_ = scoped_ptr<Demuxer>(new FFmpegDemuxer(
       message_loop_.task_runner(), data_source_.get(),
       base::Bind(&PipelineIntegrationTestBase::DemuxerEncryptedMediaInitDataCB,
                  base::Unretained(this)),
-      tracks_updated_cb, new MediaLog()));
+      base::Bind(&PipelineIntegrationTestBase::DemuxerMediaTracksUpdatedCB,
+                 base::Unretained(this)),
+      new MediaLog()));
 #endif
 }
 
 scoped_ptr<Renderer> PipelineIntegrationTestBase::CreateRenderer() {
   ScopedVector<VideoDecoder> video_decoders;
 #if !defined(MEDIA_DISABLE_LIBVPX)
   video_decoders.push_back(new VpxVideoDecoder());
 #endif  // !defined(MEDIA_DISABLE_LIBVPX)
 
 #if !defined(MEDIA_DISABLE_FFMPEG)
@@ skipping 92 matching lines @@
   DCHECK(clockless_playback_);
   return clockless_audio_sink_->render_time();
 }
 
 base::TimeTicks DummyTickClock::NowTicks() {
   now_ += base::TimeDelta::FromSeconds(60);
   return now_;
 }
 
 }  // namespace media