content/renderer/media/media_stream_center.h

   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
  20 namespace blink {
  21 class WebAudioSourceProvider;
  22 class WebMediaStreamCenterClient;
  23 }
  24
  25 namespace content {
  26 class PeerConnectionDependencyFactory;
  27
  28 class 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_