d6c395441b
This remove the use of VideoTrackRenderers within VideoTrack and instead all its sinks are passed to VideoSource. That means that the source will handle all sinks and can (if the source implement it) handle different SinkWants for each sink. The VideoBroadcaster is updated to produce black frames instead of as is today the deprecated VideoTrackRenderers. BUG=webrtc:5426 R=nisse@webrtc.org, pthatcher@webrtc.org Review URL: https://codereview.webrtc.org/1779063003 . Cr-Commit-Position: refs/heads/master@{#12028}
54 lines
2.0 KiB
C++
54 lines
2.0 KiB
C++
/*
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* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_MEDIA_BASE_VIDEOSOURCEINTERFACE_H_
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#define WEBRTC_MEDIA_BASE_VIDEOSOURCEINTERFACE_H_
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#include "webrtc/media/base/videosinkinterface.h"
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#include "webrtc/base/optional.h"
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namespace rtc {
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// VideoSinkWants is used for notifying the source of properties a video frame
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// should have when it is delivered to a certain sink.
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struct VideoSinkWants {
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// Tells the source whether the sink wants frames with rotation applied.
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// By default, the rotation is applied by the source.
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bool rotation_applied = true;
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// Tells the source that the sink only wants black frames.
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bool black_frames = false;
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// Tells the source the maximum number of pixels the sink wants.
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rtc::Optional<int> max_pixel_count;
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// Like |max_pixel_count| but relative to the given value. The source is
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// requested to produce frames with a resolution one "step up" from the given
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// value. In practice, this means that the sink can consume this amount of
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// pixels but wants more and the source should produce a resolution one
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// "step" higher than this but not higher.
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rtc::Optional<int> max_pixel_count_step_up;
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};
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template <typename VideoFrameT>
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class VideoSourceInterface {
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public:
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virtual void AddOrUpdateSink(VideoSinkInterface<VideoFrameT>* sink,
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const VideoSinkWants& wants) = 0;
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// RemoveSink must guarantee that at the time the method returns,
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// there is no current and no future calls to VideoSinkInterface::OnFrame.
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virtual void RemoveSink(VideoSinkInterface<VideoFrameT>* sink) = 0;
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protected:
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virtual ~VideoSourceInterface() {}
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};
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} // namespace rtc
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#endif // WEBRTC_MEDIA_BASE_VIDEOSOURCEINTERFACE_H_
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