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-rw-r--r--third_party/libwebrtc/video/video_receive_stream_timeout_tracker.h70
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diff --git a/third_party/libwebrtc/video/video_receive_stream_timeout_tracker.h b/third_party/libwebrtc/video/video_receive_stream_timeout_tracker.h
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+++ b/third_party/libwebrtc/video/video_receive_stream_timeout_tracker.h
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+/*
+ * Copyright (c) 2022 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 VIDEO_VIDEO_RECEIVE_STREAM_TIMEOUT_TRACKER_H_
+#define VIDEO_VIDEO_RECEIVE_STREAM_TIMEOUT_TRACKER_H_
+
+#include <functional>
+
+#include "api/task_queue/task_queue_base.h"
+#include "api/units/time_delta.h"
+#include "api/units/timestamp.h"
+#include "rtc_base/task_utils/repeating_task.h"
+#include "system_wrappers/include/clock.h"
+
+namespace webrtc {
+
+class VideoReceiveStreamTimeoutTracker {
+ public:
+ struct Timeouts {
+ TimeDelta max_wait_for_keyframe;
+ TimeDelta max_wait_for_frame;
+ };
+
+ using TimeoutCallback = std::function<void(TimeDelta wait)>;
+ VideoReceiveStreamTimeoutTracker(Clock* clock,
+ TaskQueueBase* const bookkeeping_queue,
+ const Timeouts& timeouts,
+ TimeoutCallback callback);
+ ~VideoReceiveStreamTimeoutTracker();
+ VideoReceiveStreamTimeoutTracker(const VideoReceiveStreamTimeoutTracker&) =
+ delete;
+ VideoReceiveStreamTimeoutTracker& operator=(
+ const VideoReceiveStreamTimeoutTracker&) = delete;
+
+ bool Running() const;
+ void Start(bool waiting_for_keyframe);
+ void Stop();
+ void SetWaitingForKeyframe();
+ void OnEncodedFrameReleased();
+ TimeDelta TimeUntilTimeout() const;
+
+ void SetTimeouts(Timeouts timeouts);
+
+ private:
+ TimeDelta TimeoutForNextFrame() const RTC_RUN_ON(bookkeeping_queue_) {
+ return waiting_for_keyframe_ ? timeouts_.max_wait_for_keyframe
+ : timeouts_.max_wait_for_frame;
+ }
+ TimeDelta HandleTimeoutTask();
+
+ Clock* const clock_;
+ TaskQueueBase* const bookkeeping_queue_;
+ Timeouts timeouts_ RTC_GUARDED_BY(bookkeeping_queue_);
+ const TimeoutCallback timeout_cb_;
+ RepeatingTaskHandle timeout_task_;
+
+ Timestamp last_frame_ = Timestamp::MinusInfinity();
+ Timestamp timeout_ = Timestamp::MinusInfinity();
+ bool waiting_for_keyframe_;
+};
+} // namespace webrtc
+
+#endif // VIDEO_VIDEO_RECEIVE_STREAM_TIMEOUT_TRACKER_H_