52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
/*
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* Copyright (c) 2022 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 VIDEO_FRAME_DECODE_SCHEDULER_H_
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#define VIDEO_FRAME_DECODE_SCHEDULER_H_
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#include <stdint.h>
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#include <functional>
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#include "absl/types/optional.h"
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#include "api/units/timestamp.h"
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#include "video/frame_decode_timing.h"
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namespace webrtc {
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class FrameDecodeScheduler {
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public:
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// Invoked when a frame with `rtp_timestamp` is ready for decoding.
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using FrameReleaseCallback =
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std::function<void(uint32_t rtp_timestamp, Timestamp render_time)>;
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virtual ~FrameDecodeScheduler() = default;
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// Returns the rtp timestamp of the next frame scheduled for release, or
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// `nullopt` if no frame is currently scheduled.
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virtual absl::optional<uint32_t> ScheduledRtpTimestamp() = 0;
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// Shedules a frame for release based on `schedule`. When released, `callback`
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// will be invoked with the `rtp` timestamp of the frame and the `render_time`
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virtual void ScheduleFrame(uint32_t rtp,
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FrameDecodeTiming::FrameSchedule schedule,
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FrameReleaseCallback callback) = 0;
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// Cancels all scheduled frames.
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virtual void CancelOutstanding() = 0;
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// Stop() Must be called before destruction.
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virtual void Stop() = 0;
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};
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} // namespace webrtc
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#endif // VIDEO_FRAME_DECODE_SCHEDULER_H_
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