| // Copyright 2014 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_WEBRTC_WEBRTC_VIDEO_TRACK_ADAPTER_H_ |
| #define CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_TRACK_ADAPTER_H_ |
| |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/threading/thread_checker.h" |
| #include "content/public/renderer/media_stream_video_sink.h" |
| #include "content/renderer/media/webrtc/webrtc_video_capturer_adapter.h" |
| #include "third_party/WebKit/public/platform/WebMediaStreamTrack.h" |
| #include "third_party/webrtc/api/mediastreaminterface.h" |
| |
| namespace content { |
| |
| class MediaStreamVideoTrack; |
| class PeerConnectionDependencyFactory; |
| |
| // MediaStreamVideoWebRtcSink is an adapter between a |
| // content::MediaStreamVideoTrack object and a webrtc VideoTrack that is |
| // currently sent on a PeerConnection. |
| // The responsibility of the class is to create and own a representation of a |
| // webrtc VideoTrack that can be added and removed from a RTCPeerConnection. An |
| // instance of MediaStreamVideoWebRtcSink is created when a VideoTrack is added |
| // to an RTCPeerConnection object. |
| // Instances of this class is owned by the WebRtcMediaStreamAdapter object that |
| // created it. |
| class CONTENT_EXPORT MediaStreamVideoWebRtcSink : public MediaStreamVideoSink { |
| public: |
| MediaStreamVideoWebRtcSink(const blink::WebMediaStreamTrack& track, |
| PeerConnectionDependencyFactory* factory); |
| ~MediaStreamVideoWebRtcSink() override; |
| |
| webrtc::VideoTrackInterface* webrtc_video_track() { |
| return video_track_.get(); |
| } |
| |
| rtc::Optional<bool> SourceNeedsDenoisingForTesting() const; |
| |
| protected: |
| // Implementation of MediaStreamSink. |
| void OnEnabledChanged(bool enabled) override; |
| void OnContentHintChanged( |
| blink::WebMediaStreamTrack::ContentHintType content_hint) override; |
| |
| private: |
| // Helper to request a refresh frame from the source. Called via the callback |
| // passed to WebRtcVideoSourceAdapter. |
| void RequestRefreshFrame(); |
| |
| // Used to DCHECK that we are called on the correct thread. |
| base::ThreadChecker thread_checker_; |
| |
| // |video_source_| and |video_track_source_proxy_| are held as references to |
| // outlive |video_track_| since the interfaces between them don't use |
| // reference counting. |
| class WebRtcVideoSource; |
| scoped_refptr<WebRtcVideoSource> video_source_; |
| scoped_refptr<webrtc::VideoTrackSourceInterface> video_source_proxy_; |
| scoped_refptr<webrtc::VideoTrackInterface> video_track_; |
| |
| class WebRtcVideoSourceAdapter; |
| scoped_refptr<WebRtcVideoSourceAdapter> source_adapter_; |
| |
| // Provides WebRtcVideoSourceAdapter a weak reference to |
| // MediaStreamVideoWebRtcSink in order to allow it to request refresh frames. |
| // See comments in media_stream_video_webrtc_sink.cc. |
| base::WeakPtrFactory<MediaStreamVideoWebRtcSink> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(MediaStreamVideoWebRtcSink); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_TRACK_ADAPTER_H_ |