Adds MediaStreamSource, MediaStreamAudioSource and MediaStreamVideoCaptureDeviceSource

content/renderer/media/media_stream_source_extra_data.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CONTENT_RENDERER_MEDIA_MEDIA_STREAM_SOURCE_EXTRA_DATA_H_
-#define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_SOURCE_EXTRA_DATA_H_
-
-#include "base/callback.h"
-#include "base/compiler_specific.h"
-#include "content/common/content_export.h"
-#include "content/common/media/media_stream_options.h"
-#include "content/renderer/media/media_stream_source_observer.h"
-#include "content/renderer/media/webrtc_audio_capturer.h"
-#include "third_party/libjingle/source/talk/app/webrtc/videosourceinterface.h"
-#include "third_party/WebKit/public/platform/WebMediaStreamSource.h"
-
-namespace content {
-
-class CONTENT_EXPORT MediaStreamSourceExtraData
-    : NON_EXPORTED_BASE(public blink::WebMediaStreamSource::ExtraData) {
- public:
-  typedef base::Callback<void(const blink::WebMediaStreamSource& source)>
-      SourceStopCallback;
-
-  MediaStreamSourceExtraData(const StreamDeviceInfo& device_info,
-                             const SourceStopCallback& stop_callback);
-  MediaStreamSourceExtraData();
-  virtual ~MediaStreamSourceExtraData();
-
-  // Return device information about the camera or microphone.
-  const StreamDeviceInfo& device_info() const {
-    return device_info_;
-  }
-
-  void SetVideoSource(webrtc::VideoSourceInterface* source) {
-    video_source_ = source;
-    source_observer_.reset(new MediaStreamSourceObserver(source, this));
-  }
-
-  void SetLocalAudioSource(webrtc::AudioSourceInterface* source) {
-    local_audio_source_ = source;
-    // TODO(perkj): Implement a local source observer for audio.
-    // See |source_observer_|.
-  }
-
-  void SetAudioCapturer(WebRtcAudioCapturer* capturer) {
-    DCHECK(!audio_capturer_);
-    audio_capturer_ = capturer;
-  }
-
-  WebRtcAudioCapturer* GetAudioCapturer() const {
-    // TODO(perkj): |audio_capturer_| can currently be reconfigured to use
-    // another microphone even after it has been created since only one
-    // capturer is supported. See issue crbug/262117.
-    // It would make more sense if a WebRtcAudioCapturer represent one and only
-    // one audio source.
-    if (audio_capturer_ &&
-        device_info_.session_id == audio_capturer_->session_id()) {
-      return audio_capturer_;
-    }
-    return NULL;
-  }
-
-  webrtc::VideoSourceInterface* video_source() { return video_source_.get(); }
-  webrtc::AudioSourceInterface* local_audio_source() {
-    return local_audio_source_.get();
-  }
-
-  void OnLocalSourceStop();
-
- private:
-  StreamDeviceInfo device_info_;
-
-  scoped_refptr<webrtc::VideoSourceInterface> video_source_;
-
-  // This member holds an instance of webrtc::LocalAudioSource. This is used
-  // as a container for audio options.
-  // TODO(hclam): This should be merged with |audio_source_| such that it
-  // carries audio options.
-  scoped_refptr<webrtc::AudioSourceInterface> local_audio_source_;
-  scoped_ptr<MediaStreamSourceObserver> source_observer_;
-
-  scoped_refptr<WebRtcAudioCapturer> audio_capturer_;
-
-  SourceStopCallback stop_callback_;
-
-  DISALLOW_COPY_AND_ASSIGN(MediaStreamSourceExtraData);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_SOURCE_EXTRA_DATA_H_