task_queue_frame_decode_scheduler.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_TASK_QUEUE_FRAME_DECODE_SCHEDULER_H_

#define VIDEO_TASK_QUEUE_FRAME_DECODE_SCHEDULER_H_

#include "video/frame_decode_scheduler.h"

namespace webrtc {

// An implementation of FrameDecodeScheduler that is based on TaskQueues. This

// is the default implementation for general use.

class TaskQueueFrameDecodeScheduler : public FrameDecodeScheduler {

 public:

  TaskQueueFrameDecodeScheduler(Clock* clock,

                                TaskQueueBase* const bookkeeping_queue);

  ~TaskQueueFrameDecodeScheduler() override;

  TaskQueueFrameDecodeScheduler(const TaskQueueFrameDecodeScheduler&) = delete;

  TaskQueueFrameDecodeScheduler& operator=(

      const TaskQueueFrameDecodeScheduler&) = delete;

  // FrameDecodeScheduler implementation.

  absl::optional<uint32_t> ScheduledRtpTimestamp() override;

  void ScheduleFrame(uint32_t rtp,

                     FrameDecodeTiming::FrameSchedule schedule,

                     FrameReleaseCallback cb) override;

  void CancelOutstanding() override;

  void Stop() override;

 private:

  Clock* const clock_;

  TaskQueueBase* const bookkeeping_queue_;

  absl::optional<uint32_t> scheduled_rtp_;

  ScopedTaskSafetyDetached task_safety_;

  bool stopped_ = false;

};

}  // namespace webrtc

#endif  // VIDEO_TASK_QUEUE_FRAME_DECODE_SCHEDULER_H_