content/public/renderer/media_stream_audio_sink.cc

   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.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
  13 namespace content {
  14
  15 void MediaStreamAudioSink::AddToAudioTrack(
  16     MediaStreamAudioSink* sink,
  17     const blink::WebMediaStreamTrack& track) {
  18   DCHECK(track.source().type() == blink::WebMediaStreamSource::TypeAudio);
  19   MediaStreamTrack* native_track = MediaStreamTrack::GetTrack(track);
  20   // TODO(xians): Support remote audio track.
  21   if (!native_track->is_local_track()) {
  22     LOG(ERROR) << "Can't add the sink to a remote audio track";
  23     return;
  24   }
  25
  26   WebRtcLocalAudioTrack* audio_track =
  27       static_cast<WebRtcLocalAudioTrack*>(native_track);
  28   audio_track->AddSink(sink);
  29 }
  30
  31 void MediaStreamAudioSink::RemoveFromAudioTrack(
  32     MediaStreamAudioSink* sink,
  33     const blink::WebMediaStreamTrack& track) {
  34   MediaStreamTrack* native_track = MediaStreamTrack::GetTrack(track);
  35   // TODO(xians): Support remote audio track.
  36   if (!native_track->is_local_track()) {
  37     LOG(ERROR) << "Can't remove the sink from a remote audio track";
  38     return;
  39   }
  40
  41   WebRtcLocalAudioTrack* audio_track =
  42       static_cast<WebRtcLocalAudioTrack*>(native_track);
  43   audio_track->RemoveSink(sink);
  44 }
  45
  46 media::AudioParameters MediaStreamAudioSink::GetFormatFromAudioTrack(
  47     const blink::WebMediaStreamTrack& track) {
  48   MediaStreamTrack* native_track = MediaStreamTrack::GetTrack(track);
  49   if (!native_track->is_local_track()) {
  50     LOG(ERROR) << "Can't get format from a remote audio track";
  51     return media::AudioParameters();
  52   }
  53
  54   WebRtcLocalAudioTrack* audio_track =
  55       static_cast<WebRtcLocalAudioTrack*>(native_track);
  56   return audio_track->GetOutputFormat();
  57 }
  58
  59 }  // namespace content