diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /third_party/libwebrtc/media/base/adapted_video_track_source.h | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/libwebrtc/media/base/adapted_video_track_source.h')
-rw-r--r-- | third_party/libwebrtc/media/base/adapted_video_track_source.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/third_party/libwebrtc/media/base/adapted_video_track_source.h b/third_party/libwebrtc/media/base/adapted_video_track_source.h new file mode 100644 index 0000000000..1c3e0b68d3 --- /dev/null +++ b/third_party/libwebrtc/media/base/adapted_video_track_source.h @@ -0,0 +1,104 @@ +/* + * 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 MEDIA_BASE_ADAPTED_VIDEO_TRACK_SOURCE_H_ +#define MEDIA_BASE_ADAPTED_VIDEO_TRACK_SOURCE_H_ + +#include <stdint.h> + +#include "absl/types/optional.h" +#include "api/media_stream_interface.h" +#include "api/notifier.h" +#include "api/video/video_frame.h" +#include "api/video/video_sink_interface.h" +#include "api/video/video_source_interface.h" +#include "media/base/video_adapter.h" +#include "media/base/video_broadcaster.h" +#include "rtc_base/synchronization/mutex.h" +#include "rtc_base/system/rtc_export.h" +#include "rtc_base/thread_annotations.h" + +namespace rtc { + +// Base class for sources which needs video adaptation, e.g., video +// capture sources. Sinks must be added and removed on one and only +// one thread, while AdaptFrame and OnFrame may be called on any +// thread. +class RTC_EXPORT AdaptedVideoTrackSource + : public webrtc::Notifier<webrtc::VideoTrackSourceInterface> { + public: + AdaptedVideoTrackSource(); + ~AdaptedVideoTrackSource() override; + + protected: + // Allows derived classes to initialize `video_adapter_` with a custom + // alignment. + explicit AdaptedVideoTrackSource(int required_alignment); + // Checks the apply_rotation() flag. If the frame needs rotation, and it is a + // plain memory frame, it is rotated. Subclasses producing native frames must + // handle apply_rotation() themselves. + void OnFrame(const webrtc::VideoFrame& frame); + // Indication from source that a frame was dropped. + void OnFrameDropped(); + + // Reports the appropriate frame size after adaptation. Returns true + // if a frame is wanted. Returns false if there are no interested + // sinks, or if the VideoAdapter decides to drop the frame. + bool AdaptFrame(int width, + int height, + int64_t time_us, + int* out_width, + int* out_height, + int* crop_width, + int* crop_height, + int* crop_x, + int* crop_y); + + // Returns the current value of the apply_rotation flag, derived + // from the VideoSinkWants of registered sinks. The value is derived + // from sinks' wants, in AddOrUpdateSink and RemoveSink. Beware that + // when using this method from a different thread, the value may + // become stale before it is used. + bool apply_rotation(); + + cricket::VideoAdapter* video_adapter() { return &video_adapter_; } + + private: + // Implements rtc::VideoSourceInterface. + void AddOrUpdateSink(rtc::VideoSinkInterface<webrtc::VideoFrame>* sink, + const rtc::VideoSinkWants& wants) override; + void RemoveSink(rtc::VideoSinkInterface<webrtc::VideoFrame>* sink) override; + + // Part of VideoTrackSourceInterface. + bool GetStats(Stats* stats) override; + + void OnSinkWantsChanged(const rtc::VideoSinkWants& wants); + + // Encoded sinks not implemented for AdaptedVideoTrackSource. + bool SupportsEncodedOutput() const override { return false; } + void GenerateKeyFrame() override {} + void AddEncodedSink( + rtc::VideoSinkInterface<webrtc::RecordableEncodedFrame>* sink) override {} + void RemoveEncodedSink( + rtc::VideoSinkInterface<webrtc::RecordableEncodedFrame>* sink) override {} + void ProcessConstraints( + const webrtc::VideoTrackSourceConstraints& constraints) override; + + cricket::VideoAdapter video_adapter_; + + webrtc::Mutex stats_mutex_; + absl::optional<Stats> stats_ RTC_GUARDED_BY(stats_mutex_); + + VideoBroadcaster broadcaster_; +}; + +} // namespace rtc + +#endif // MEDIA_BASE_ADAPTED_VIDEO_TRACK_SOURCE_H_ |