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