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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef MEDIA_CAST_CONGESTION_CONTROL_CONGESTION_CONTROL_H_ | 5 #ifndef MEDIA_CAST_CONGESTION_CONTROL_CONGESTION_CONTROL_H_ |
| 6 #define MEDIA_CAST_CONGESTION_CONTROL_CONGESTION_CONTROL_H_ | 6 #define MEDIA_CAST_CONGESTION_CONTROL_CONGESTION_CONTROL_H_ |
| 7 | 7 |
| 8 #include "base/basictypes.h" | |
| 9 #include "base/memory/scoped_ptr.h" | 8 #include "base/memory/scoped_ptr.h" |
| 10 #include "base/time/tick_clock.h" | 9 #include "base/time/tick_clock.h" |
| 11 #include "base/time/time.h" | 10 #include "base/time/time.h" |
| 12 | 11 |
| 13 namespace media { | 12 namespace media { |
| 14 namespace cast { | 13 namespace cast { |
| 15 | 14 |
| 16 class CongestionControl { | 15 class CongestionControl { |
| 17 public: | 16 public: |
| 18 virtual ~CongestionControl(); | 17 virtual ~CongestionControl(); |
| 19 | 18 |
| 20 // Called with latest measured rtt value. | 19 // Called with latest measured rtt value. |
| 21 virtual void UpdateRtt(base::TimeDelta rtt) = 0; | 20 virtual void UpdateRtt(base::TimeDelta rtt) = 0; |
| 22 | 21 |
| 23 // Called with an updated target playout delay value. | 22 // Called with an updated target playout delay value. |
| 24 virtual void UpdateTargetPlayoutDelay(base::TimeDelta delay) = 0; | 23 virtual void UpdateTargetPlayoutDelay(base::TimeDelta delay) = 0; |
| 25 | 24 |
| 26 // Called when an encoded frame is enqueued for transport. | 25 // Called when an encoded frame is enqueued for transport. |
| 27 virtual void SendFrameToTransport(uint32 frame_id, | 26 virtual void SendFrameToTransport(uint32_t frame_id, |
| 28 size_t frame_size_in_bits, | 27 size_t frame_size_in_bits, |
| 29 base::TimeTicks when) = 0; | 28 base::TimeTicks when) = 0; |
| 30 | 29 |
| 31 // Called when we receive an ACK for a frame. | 30 // Called when we receive an ACK for a frame. |
| 32 virtual void AckFrame(uint32 frame_id, base::TimeTicks when) = 0; | 31 virtual void AckFrame(uint32_t frame_id, base::TimeTicks when) = 0; |
| 33 | 32 |
| 34 // Returns the bitrate we should use for the next frame. |soft_max_bitrate| | 33 // Returns the bitrate we should use for the next frame. |soft_max_bitrate| |
| 35 // is a soft upper-bound applied to the computed target bitrate before the | 34 // is a soft upper-bound applied to the computed target bitrate before the |
| 36 // hard upper- and lower-bounds are applied. | 35 // hard upper- and lower-bounds are applied. |
| 37 virtual int GetBitrate(base::TimeTicks playout_time, | 36 virtual int GetBitrate(base::TimeTicks playout_time, |
| 38 base::TimeDelta playout_delay, | 37 base::TimeDelta playout_delay, |
| 39 int soft_max_bitrate) = 0; | 38 int soft_max_bitrate) = 0; |
| 40 }; | 39 }; |
| 41 | 40 |
| 42 CongestionControl* NewAdaptiveCongestionControl( | 41 CongestionControl* NewAdaptiveCongestionControl( |
| 43 base::TickClock* clock, | 42 base::TickClock* clock, |
| 44 int max_bitrate_configured, | 43 int max_bitrate_configured, |
| 45 int min_bitrate_configured, | 44 int min_bitrate_configured, |
| 46 double max_frame_rate); | 45 double max_frame_rate); |
| 47 | 46 |
| 48 CongestionControl* NewFixedCongestionControl(int bitrate); | 47 CongestionControl* NewFixedCongestionControl(int bitrate); |
| 49 | 48 |
| 50 } // namespace cast | 49 } // namespace cast |
| 51 } // namespace media | 50 } // namespace media |
| 52 | 51 |
| 53 #endif // MEDIA_CAST_CONGESTION_CONTROL_CONGESTION_CONTROL_H_ | 52 #endif // MEDIA_CAST_CONGESTION_CONTROL_CONGESTION_CONTROL_H_ |
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