media_stream_audio_source.cc revision 6e8cce623b6e4fe0c9e4af605d675dd9d0338c38 
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#include "content/renderer/render_view_impl.h"
9
10namespace content {
11
12namespace {
13// TODO(miu): This is a temporary hack until the Chrome audio vertical is
14// migrated for the Cross-Site Isolation project.  http://crbug.com/392596
15int ToRenderViewId(int render_frame_id) {
16  RenderFrameImpl* const frame =
17      RenderFrameImpl::FromRoutingID(render_frame_id);
18  RenderViewImpl* const view = frame ? frame->render_view() : NULL;
19  return view ? view->GetRoutingID() : -1;
20}
21}  // namespace
22
23MediaStreamAudioSource::MediaStreamAudioSource(
24    int render_frame_id,
25    const StreamDeviceInfo& device_info,
26    const SourceStoppedCallback& stop_callback,
27    PeerConnectionDependencyFactory* factory)
28    : render_view_id_(ToRenderViewId(render_frame_id)),
29      factory_(factory) {
30  SetDeviceInfo(device_info);
31  SetStopCallback(stop_callback);
32}
33
34MediaStreamAudioSource::MediaStreamAudioSource()
35    : render_view_id_(-1),
36      factory_(NULL) {
37}
38
39MediaStreamAudioSource::~MediaStreamAudioSource() {}
40
41void MediaStreamAudioSource::DoStopSource() {
42  if (audio_capturer_.get())
43    audio_capturer_->Stop();
44}
45
46void MediaStreamAudioSource::AddTrack(
47    const blink::WebMediaStreamTrack& track,
48    const blink::WebMediaConstraints& constraints,
49    const ConstraintsCallback& callback) {
50  // TODO(xians): Properly implement for audio sources.
51  if (!local_audio_source_) {
52    if (!factory_->InitializeMediaStreamAudioSource(render_view_id_,
53                                                    constraints,
54                                                    this)) {
55      // The source failed to start.
56      // MediaStreamImpl rely on the |stop_callback| to be triggered when the
57      // last track is removed from the source. But in this case, the source is
58      // is not even started. So we need to fail both adding the track and
59      // trigger |stop_callback|.
60      callback.Run(this, MEDIA_DEVICE_TRACK_START_FAILURE, "");
61      StopSource();
62      return;
63    }
64  }
65
66  factory_->CreateLocalAudioTrack(track);
67  callback.Run(this, MEDIA_DEVICE_OK, "");
68}
69
70}  // namespace content
71