content/renderer/media/media_stream_track.h

   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 #ifndef CONTENT_RENDERER_MEDIA_MEDIA_STREAM_TRACK_H_
   6 #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_TRACK_H_
   7
   8 #include "base/callback.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/memory/ref_counted.h"
  11 #include "base/threading/thread_checker.h"
  12 #include "content/common/content_export.h"
  13 #include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
  14
  15 namespace webrtc {
  16 class AudioTrackInterface;
  17 class MediaStreamTrackInterface;
  18 }  // namespace webrtc
  19
  20 namespace content {
  21
  22 // MediaStreamTrack is a Chrome representation of blink::WebMediaStreamTrack.
  23 // It is owned by blink::WebMediaStreamTrack as
  24 // blink::WebMediaStreamTrack::ExtraData.
  25 class CONTENT_EXPORT MediaStreamTrack
  26     : NON_EXPORTED_BASE(public blink::WebMediaStreamTrack::ExtraData) {
  27  public:
  28   MediaStreamTrack(
  29       const scoped_refptr<webrtc::MediaStreamTrackInterface>& track,
  30       bool is_local_track);
  31   virtual ~MediaStreamTrack();
  32
  33   static MediaStreamTrack* GetTrack(
  34       const blink::WebMediaStreamTrack& track);
  35
  36   // If a subclass overrides this method it has to call the base class.
  37   virtual void SetEnabled(bool enabled);
  38
  39   // TODO(xians): Make this pure virtual when Stop[Track] has been
  40   // implemented for remote audio tracks.
  41   virtual void Stop();
  42
  43   virtual webrtc::AudioTrackInterface* GetAudioAdapter();
  44
  45   bool is_local_track () const { return is_local_track_; }
  46
  47  protected:
  48   scoped_refptr<webrtc::MediaStreamTrackInterface> track_;
  49
  50  private:
  51   const bool is_local_track_;
  52
  53   base::ThreadChecker thread_checker_;
  54
  55   DISALLOW_COPY_AND_ASSIGN(MediaStreamTrack);
  56 };
  57
  58 }  // namespace content
  59
  60 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_TRACK_H_