1// Copyright (c) 2012 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#ifndef CONTENT_RENDERER_MEDIA_MEDIA_STREAM_CENTER_H_
6#define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_CENTER_H_
7
8#include <map>
9
10#include "base/basictypes.h"
11#include "base/compiler_specific.h"
12#include "content/common/content_export.h"
13#include "content/common/media/media_stream_options.h"
14#include "content/public/renderer/render_process_observer.h"
15#include "third_party/WebKit/public/platform/WebMediaStream.h"
16#include "third_party/WebKit/public/platform/WebMediaStreamCenter.h"
17#include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
18#include "third_party/WebKit/public/platform/WebMediaStreamTrackSourcesRequest.h"
19
20namespace blink {
21class WebAudioSourceProvider;
22class WebMediaStreamCenterClient;
23}
24
25namespace content {
26class PeerConnectionDependencyFactory;
27
28class CONTENT_EXPORT MediaStreamCenter
29    : NON_EXPORTED_BASE(public blink::WebMediaStreamCenter),
30      public RenderProcessObserver {
31 public:
32  MediaStreamCenter(blink::WebMediaStreamCenterClient* client,
33                    PeerConnectionDependencyFactory* factory);
34  virtual ~MediaStreamCenter();
35
36 private:
37  virtual bool getMediaStreamTrackSources(
38      const blink::WebMediaStreamTrackSourcesRequest& request) OVERRIDE;
39
40  virtual void didCreateMediaStreamTrack(
41      const blink::WebMediaStreamTrack& track) OVERRIDE;
42
43  virtual void didEnableMediaStreamTrack(
44      const blink::WebMediaStreamTrack& track) OVERRIDE;
45
46  virtual void didDisableMediaStreamTrack(
47      const blink::WebMediaStreamTrack& track) OVERRIDE;
48
49  virtual void didStopLocalMediaStream(
50      const blink::WebMediaStream& stream) OVERRIDE;
51
52  virtual bool didStopMediaStreamTrack(
53      const blink::WebMediaStreamTrack& track) OVERRIDE;
54
55  virtual blink::WebAudioSourceProvider*
56      createWebAudioSourceFromMediaStreamTrack(
57          const blink::WebMediaStreamTrack& track) OVERRIDE;
58
59
60  virtual void didCreateMediaStream(
61      blink::WebMediaStream& stream) OVERRIDE;
62
63  virtual bool didAddMediaStreamTrack(
64      const blink::WebMediaStream& stream,
65      const blink::WebMediaStreamTrack& track) OVERRIDE;
66
67  virtual bool didRemoveMediaStreamTrack(
68      const blink::WebMediaStream& stream,
69      const blink::WebMediaStreamTrack& track) OVERRIDE;
70
71  // RenderProcessObserver implementation.
72  virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE;
73
74  void OnGetSourcesComplete(int request_id,
75                            const content::StreamDeviceInfoArray& devices);
76
77  // |rtc_factory_| is a weak pointer and is owned by the RenderThreadImpl.
78  // It is valid as long as  RenderThreadImpl exist.
79  PeerConnectionDependencyFactory* rtc_factory_;
80
81  // A strictly increasing id that's used to label incoming GetSources()
82  // requests.
83  int next_request_id_;
84
85  typedef std::map<int, blink::WebMediaStreamTrackSourcesRequest> RequestMap;
86  // Maps request ids to request objects.
87  RequestMap requests_;
88
89  DISALLOW_COPY_AND_ASSIGN(MediaStreamCenter);
90};
91
92}  // namespace content
93
94#endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_CENTER_H_
95