e73afbaf17
The plan is that this interface should be used by all classes which receive a stream of video frames, and replace the two generic classes webrtc::VideoRendererInterface and cricket::VideoRenderer. And the list goes on, there's a dozen of different classes which act as video frame sinks. At some point, we will likely add some method to handle sink properties like, e.g, maximum useful width and height. But hopefully this can be done while keeping the interface very simple. BUG=webrtc:5426 R=perkj@webrtc.org, pthatcher@webrtc.org Committed: https://crrev.com/a862d4563fbc26e52bed442de784094ae1dfe5ee Cr-Commit-Position: refs/heads/master@{#11396} Review URL: https://codereview.webrtc.org/1594973006 Cr-Commit-Position: refs/heads/master@{#11414}
83 lines
3.6 KiB
C++
83 lines
3.6 KiB
C++
/*
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* libjingle
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* Copyright 2012 Google Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef TALK_APP_WEBRTC_VIDEOSOURCEINTERFACE_H_
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#define TALK_APP_WEBRTC_VIDEOSOURCEINTERFACE_H_
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#include "talk/app/webrtc/mediastreaminterface.h"
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#include "talk/media/base/mediachannel.h"
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#include "talk/media/base/videorenderer.h"
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namespace webrtc {
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// VideoSourceInterface is a reference counted source used for VideoTracks.
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// The same source can be used in multiple VideoTracks.
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// The methods are only supposed to be called by the PeerConnection
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// implementation.
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class VideoSourceInterface : public MediaSourceInterface {
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public:
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// Get access to the source implementation of cricket::VideoCapturer.
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// This can be used for receiving frames and state notifications.
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// But it should not be used for starting or stopping capturing.
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virtual cricket::VideoCapturer* GetVideoCapturer() = 0;
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// Stop the video capturer.
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virtual void Stop() = 0;
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virtual void Restart() = 0;
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// TODO(nisse): Delete these backwards compatibility wrappers after
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// chrome is updated. Needed now because chrome's MockVideoSource
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// defines a method with this signature (and marked with override).
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// In addition, we need a dummy default implementation for the new
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// AddSink/RemoveSink methods below, because they're unimplemented
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// in the same class. This is ugly, but for MockVideoSource it
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// doesn't really matter what these methods do, because they're not
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// used.
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virtual void AddSink(cricket::VideoRenderer* output) {
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AddSink(static_cast<rtc::VideoSinkInterface<cricket::VideoFrame>*>(output));
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}
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virtual void RemoveSink(cricket::VideoRenderer* output) {
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RemoveSink(
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static_cast<rtc::VideoSinkInterface<cricket::VideoFrame>*>(output));
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}
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// Adds |output| to the source to receive frames.
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// TODO(nisse): Delete dummy default implementation.
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virtual void AddSink(rtc::VideoSinkInterface<cricket::VideoFrame>* output){};
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virtual void RemoveSink(
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rtc::VideoSinkInterface<cricket::VideoFrame>* output){};
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virtual const cricket::VideoOptions* options() const = 0;
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virtual cricket::VideoRenderer* FrameInput() = 0;
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protected:
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virtual ~VideoSourceInterface() {}
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};
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} // namespace webrtc
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#endif // TALK_APP_WEBRTC_VIDEOSOURCEINTERFACE_H_
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