content/renderer/media/media_stream_audio_source.cc

   1 // Copyright 2014 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/renderer/media/media_stream_audio_source.h"
   6
   7 #include "content/renderer/render_frame_impl.h"
   8
   9 namespace content {
  10
  11 MediaStreamAudioSource::MediaStreamAudioSource(
  12     int render_frame_id,
  13     const StreamDeviceInfo& device_info,
  14     const SourceStoppedCallback& stop_callback,
  15     PeerConnectionDependencyFactory* factory)
  16     : render_frame_id_(render_frame_id), factory_(factory) {
  17   SetDeviceInfo(device_info);
  18   SetStopCallback(stop_callback);
  19 }
  20
  21 MediaStreamAudioSource::MediaStreamAudioSource()
  22     : render_frame_id_(-1), factory_(NULL) {
  23 }
  24
  25 MediaStreamAudioSource::~MediaStreamAudioSource() {}
  26
  27 void MediaStreamAudioSource::DoStopSource() {
  28   if (audio_capturer_.get())
  29     audio_capturer_->Stop();
  30 }
  31
  32 void MediaStreamAudioSource::AddTrack(
  33     const blink::WebMediaStreamTrack& track,
  34     const blink::WebMediaConstraints& constraints,
  35     const ConstraintsCallback& callback) {
  36   // TODO(xians): Properly implement for audio sources.
  37   if (!local_audio_source_.get()) {
  38     if (!factory_->InitializeMediaStreamAudioSource(render_frame_id_,
  39                                                     constraints, this)) {
  40       // The source failed to start.
  41       // UserMediaClientImpl rely on the |stop_callback| to be triggered when
  42       // the last track is removed from the source. But in this case, the
  43       // source is is not even started. So we need to fail both adding the
  44       // track and trigger |stop_callback|.
  45       callback.Run(this, MEDIA_DEVICE_TRACK_START_FAILURE, "");
  46       StopSource();
  47       return;
  48     }
  49   }
  50
  51   factory_->CreateLocalAudioTrack(track);
  52   callback.Run(this, MEDIA_DEVICE_OK, "");
  53 }
  54
  55 }  // namespace content