media_stream_audio_sink.cc revision a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7 
1// Copyright 2013 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "content/public/renderer/media_stream_audio_sink.h"
6
7#include "base/logging.h"
8#include "content/renderer/media/media_stream_track_extra_data.h"
9#include "content/renderer/media/webrtc_local_audio_track.h"
10#include "third_party/WebKit/public/platform/WebMediaStreamSource.h"
11#include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
12
13namespace content {
14
15void MediaStreamAudioSink::AddToAudioTrack(
16    MediaStreamAudioSink* sink,
17    const blink::WebMediaStreamTrack& track) {
18  DCHECK(track.source().type() == blink::WebMediaStreamSource::TypeAudio);
19  MediaStreamTrackExtraData* extra_data =
20      static_cast<MediaStreamTrackExtraData*>(track.extraData());
21  // TODO(xians): Support remote audio track.
22  DCHECK(extra_data->is_local_track());
23  WebRtcLocalAudioTrack* audio_track =
24      static_cast<WebRtcLocalAudioTrack*>(extra_data->track().get());
25  audio_track->AddSink(sink);
26}
27
28void MediaStreamAudioSink::RemoveFromAudioTrack(
29    MediaStreamAudioSink* sink,
30    const blink::WebMediaStreamTrack& track) {
31  MediaStreamTrackExtraData* extra_data =
32      static_cast<MediaStreamTrackExtraData*>(track.extraData());
33  // TODO(xians): Support remote audio track.
34  DCHECK(extra_data->is_local_track());
35  WebRtcLocalAudioTrack* audio_track =
36      static_cast<WebRtcLocalAudioTrack*>(extra_data->track().get());
37  audio_track->RemoveSink(sink);
38}
39
40}  // namespace content
41