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- // Copyright 2014 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #ifndef MEDIA_CAST_SENDER_CONGESTION_CONTROL_H_
- #define MEDIA_CAST_SENDER_CONGESTION_CONTROL_H_
- #include <stddef.h>
- #include <stdint.h>
- #include <memory>
- #include <vector>
- #include "base/time/tick_clock.h"
- #include "base/time/time.h"
- #include "media/cast/common/frame_id.h"
- namespace media {
- namespace cast {
- class CongestionControl {
- public:
- virtual ~CongestionControl();
- // Called with latest measured rtt value.
- virtual void UpdateRtt(base::TimeDelta rtt) = 0;
- // Called with an updated target playout delay value.
- virtual void UpdateTargetPlayoutDelay(base::TimeDelta delay) = 0;
- // Called when an encoded frame is enqueued for transport.
- virtual void WillSendFrameToTransport(FrameId frame_id,
- size_t frame_size_in_bytes,
- base::TimeTicks when) = 0;
- // Called when we receive an ACK for a frame.
- virtual void AckFrame(FrameId frame_id, base::TimeTicks when) = 0;
- // Called when the RTP receiver received frames that have frame ID larger
- // than |last_acked_frame_|.
- virtual void AckLaterFrames(std::vector<FrameId> received_frames,
- base::TimeTicks when) = 0;
- // Returns the bitrate we should use for the next frame.
- virtual int GetBitrate(base::TimeTicks playout_time,
- base::TimeDelta playout_delay) = 0;
- };
- CongestionControl* NewAdaptiveCongestionControl(const base::TickClock* clock,
- int max_bitrate_configured,
- int min_bitrate_configured,
- double max_frame_rate);
- CongestionControl* NewFixedCongestionControl(int bitrate);
- } // namespace cast
- } // namespace media
- #endif // MEDIA_CAST_SENDER_CONGESTION_CONTROL_H_
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