webrtc/api/video/video_source_interface.h
Ilya Nikolaevskiy 871e144132 Revert "Reland "Partial frame capture API part 1""
This reverts commit 12e5d392cc.

Reason for revert: Partial Capture API is not needed, according to new info from the Chrome team.

Original change's description:
> Reland "Partial frame capture API part 1"
>
> Reland with fixes to undefined behavior.
>
> Define new optional struct in VideoFrame to signal that the frame is a
> changed part of a whole picture and add a flag to signal that partial
> update may be issued by the VideoFrame source.
>
> Also, fix too strict assumptions in FrameBuffers PasteFrom methods.
> Also, add ability to set a new buffer in video frame.
>
> Original Reviewed-on: https://webrtc-review.googlesource.com/c/120405
>
> Bug: webrtc:10152
> Change-Id: I85790dfc7cec2f23abfe9d6cd18dc76a0c343bc0
> Reviewed-on: https://webrtc-review.googlesource.com/c/120780
> Reviewed-by: Niels Moller <nisse@webrtc.org>
> Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
> Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#26493}

TBR=ilnik@webrtc.org,nisse@webrtc.org,sprang@webrtc.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: webrtc:10152
Change-Id: I1c1dd51a8b5a09f743f212336beb01447f60f26e
Reviewed-on: https://webrtc-review.googlesource.com/c/122092
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26638}
2019-02-11 14:20:37 +00:00

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/*
* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef API_VIDEO_VIDEO_SOURCE_INTERFACE_H_
#define API_VIDEO_VIDEO_SOURCE_INTERFACE_H_
#include <limits>
#include "absl/types/optional.h"
#include "api/video/video_sink_interface.h"
#include "rtc_base/system/rtc_export.h"
namespace rtc {
// VideoSinkWants is used for notifying the source of properties a video frame
// should have when it is delivered to a certain sink.
struct RTC_EXPORT VideoSinkWants {
VideoSinkWants();
VideoSinkWants(const VideoSinkWants&);
~VideoSinkWants();
// Tells the source whether the sink wants frames with rotation applied.
// By default, any rotation must be applied by the sink.
bool rotation_applied = false;
// Tells the source that the sink only wants black frames.
bool black_frames = false;
// Tells the source the maximum number of pixels the sink wants.
int max_pixel_count = std::numeric_limits<int>::max();
// Tells the source the desired number of pixels the sinks wants. This will
// typically be used when stepping the resolution up again when conditions
// have improved after an earlier downgrade. The source should select the
// closest resolution to this pixel count, but if max_pixel_count is set, it
// still sets the absolute upper bound.
absl::optional<int> target_pixel_count;
// Tells the source the maximum framerate the sink wants.
int max_framerate_fps = std::numeric_limits<int>::max();
};
template <typename VideoFrameT>
class VideoSourceInterface {
public:
virtual ~VideoSourceInterface() = default;
virtual void AddOrUpdateSink(VideoSinkInterface<VideoFrameT>* sink,
const VideoSinkWants& wants) = 0;
// RemoveSink must guarantee that at the time the method returns,
// there is no current and no future calls to VideoSinkInterface::OnFrame.
virtual void RemoveSink(VideoSinkInterface<VideoFrameT>* sink) = 0;
};
} // namespace rtc
#endif // API_VIDEO_VIDEO_SOURCE_INTERFACE_H_