| // 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 THIRD_PARTY_BLINK_RENDERER_MODULES_PEERCONNECTION_MEDIA_STREAM_VIDEO_WEBRTC_SINK_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_MODULES_PEERCONNECTION_MEDIA_STREAM_VIDEO_WEBRTC_SINK_H_ |
| |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/threading/thread_checker.h" |
| #include "third_party/blink/public/platform/modules/mediastream/web_media_stream_track.h" |
| #include "third_party/blink/public/web/modules/mediastream/media_stream_video_sink.h" |
| #include "third_party/blink/renderer/modules/modules_export.h" |
| #include "third_party/webrtc/api/media_stream_interface.h" |
| |
| namespace base { |
| class SingleThreadTaskRunner; |
| } |
| |
| namespace blink { |
| class MediaStreamVideoTrack; |
| class PeerConnectionDependencyFactory; |
| class WebRtcVideoTrackSource; |
| |
| // MediaStreamVideoWebRtcSink is an adapter between a |
| // 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 MODULES_EXPORT MediaStreamVideoWebRtcSink : public MediaStreamVideoSink { |
| public: |
| MediaStreamVideoWebRtcSink( |
| MediaStreamComponent* component, |
| PeerConnectionDependencyFactory* factory, |
| scoped_refptr<base::SingleThreadTaskRunner> task_runner); |
| ~MediaStreamVideoWebRtcSink() override; |
| |
| webrtc::VideoTrackInterface* webrtc_video_track() { |
| return video_track_.get(); |
| } |
| |
| absl::optional<bool> SourceNeedsDenoisingForTesting() const; |
| |
| double GetRequiredMinFramesPerSec() const override { return 1; } |
| |
| protected: |
| // Implementation of MediaStreamSink. |
| void OnEnabledChanged(bool enabled) override; |
| void OnContentHintChanged( |
| WebMediaStreamTrack::ContentHintType content_hint) override; |
| |
| private: |
| // Used to DCHECK that we are called on the correct thread. |
| THREAD_CHECKER(thread_checker_); |
| |
| // |video_source_| and |video_source_proxy_| are held as |
| // references to outlive |video_track_| since the interfaces between them |
| // don't use reference counting. |
| scoped_refptr<WebRtcVideoTrackSource> 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. |
| // |
| // TODO(crbug.com/787254): Make this object Oilpan-able, and get |
| // rid of this weak prt factory use. |
| base::WeakPtrFactory<MediaStreamVideoWebRtcSink> weak_factory_{this}; |
| |
| DISALLOW_COPY_AND_ASSIGN(MediaStreamVideoWebRtcSink); |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_MODULES_PEERCONNECTION_MEDIA_STREAM_VIDEO_WEBRTC_SINK_H_ |