MediaStream audio: Refactor 3 separate "glue" implementations into one.

content/renderer/media/mock_media_stream_registry.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 "content/renderer/media/mock_media_stream_registry.h"
 
 #include <string>
 
 #include "base/strings/utf_string_conversions.h"
 #include "content/renderer/media/media_stream.h"
 #include "content/renderer/media/media_stream_audio_source.h"
 #include "content/renderer/media/media_stream_video_track.h"
 #include "content/renderer/media/mock_media_stream_video_source.h"
-#include "content/renderer/media/webrtc/webrtc_local_audio_track_adapter.h"
-#include "content/renderer/media/webrtc_local_audio_track.h"
 #include "third_party/WebKit/public/platform/WebMediaStreamSource.h"
 #include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/platform/WebVector.h"
 
 namespace content {
 
-static const char kTestStreamLabel[] = "stream_label";
+namespace {
+
+const char kTestStreamLabel[] = "stream_label";
+
+class MockCDQualityAudioSource : public MediaStreamAudioSource {
+ public:
+  MockCDQualityAudioSource() : MediaStreamAudioSource(true) {
+    MediaStreamAudioSource::SetFormat(media::AudioParameters(
+        media::AudioParameters::AUDIO_PCM_LOW_LATENCY,
+        media::CHANNEL_LAYOUT_STEREO,
+        media::AudioParameters::kAudioCDSampleRate,
+        16,
+        media::AudioParameters::kAudioCDSampleRate / 100));
+    MediaStreamAudioSource::SetDeviceInfo(StreamDeviceInfo(
+        MEDIA_DEVICE_AUDIO_CAPTURE, "Mock audio device", "mock_audio_device_id",
+        media::AudioParameters::kAudioCDSampleRate,
+        media::CHANNEL_LAYOUT_STEREO,
+        media::AudioParameters::kAudioCDSampleRate / 100));
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockCDQualityAudioSource);
+};
+
+}  // namespace
 
 MockMediaStreamRegistry::MockMediaStreamRegistry() {}
 
 void MockMediaStreamRegistry::Init(const std::string& stream_url) {
   stream_url_ = stream_url;
   const blink::WebVector<blink::WebMediaStreamTrack> webkit_audio_tracks;
   const blink::WebVector<blink::WebMediaStreamTrack> webkit_video_tracks;
   const blink::WebString label(kTestStreamLabel);
   test_stream_.initialize(label, webkit_audio_tracks, webkit_video_tracks);
   test_stream_.setExtraData(new MediaStream());
@@ skipping 14 matching lines @@
   constraints.initialize();
 
   MediaStreamVideoTrack* native_track = new MediaStreamVideoTrack(
       native_source, constraints, MediaStreamVideoSource::ConstraintsCallback(),
       true /* enabled */);
   blink_track.setExtraData(native_track);
   test_stream_.addTrack(blink_track);
 }
 
 void MockMediaStreamRegistry::AddAudioTrack(const std::string& track_id) {
-  blink::WebMediaStreamSource audio_source;
-  audio_source.initialize(
+  blink::WebMediaStreamSource blink_source;
+  blink_source.initialize(
       "mock audio source id", blink::WebMediaStreamSource::TypeAudio,
       "mock audio source name", false /* remote */);
-  audio_source.setExtraData(new MediaStreamAudioSource());
+  MediaStreamAudioSource* const source = new MockCDQualityAudioSource();
+  blink_source.setExtraData(source);  // Takes ownership.
+
   blink::WebMediaStreamTrack blink_track;
-  blink_track.initialize(audio_source);
-  const scoped_refptr<WebRtcLocalAudioTrackAdapter> adapter(
-      WebRtcLocalAudioTrackAdapter::Create(track_id,
-                                           nullptr /* track source */));
-  std::unique_ptr<WebRtcLocalAudioTrack> native_track(
-      new WebRtcLocalAudioTrack(adapter.get()));
-  blink_track.setExtraData(native_track.release());
+  blink_track.initialize(blink_source);
+  CHECK(source->ConnectToTrack(blink_track));
+
   test_stream_.addTrack(blink_track);
 }
 
 blink::WebMediaStream MockMediaStreamRegistry::GetMediaStream(
     const std::string& url) {
   return (url != stream_url_) ? blink::WebMediaStream() : test_stream_;
 }
 
 }  // namespace content