mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-13 13:50:40 +01:00
9b881abea9
With current congestion window pushback, when congestion window is filling up, it will reduce bitrate directly and encoder may reduce encode quality, resolution, or framerate to adapt to the allocated bitrate, the behavior is depending on the degradation preference. This change enable congestion window to only drop frames to reduce bitrate (when needed) instead of reduce general bitrate allocation. Bug: webrtc:11334 Change-Id: I9cf5c20a0858c4d07d006942abe72aa5e1f7cb38 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/168059 Commit-Queue: Ying Wang <yinwa@webrtc.org> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Reviewed-by: Åsa Persson <asapersson@webrtc.org> Cr-Commit-Position: refs/heads/master@{#30483}
45 lines
1.8 KiB
C++
45 lines
1.8 KiB
C++
/*
|
|
* Copyright 2018 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 API_CALL_BITRATE_ALLOCATION_H_
|
|
#define API_CALL_BITRATE_ALLOCATION_H_
|
|
|
|
#include "api/units/data_rate.h"
|
|
#include "api/units/time_delta.h"
|
|
|
|
namespace webrtc {
|
|
|
|
// BitrateAllocationUpdate provides information to allocated streams about their
|
|
// bitrate allocation. It originates from the BitrateAllocater class and is
|
|
// propagated from there.
|
|
struct BitrateAllocationUpdate {
|
|
// The allocated target bitrate. Media streams should produce this amount of
|
|
// data. (Note that this may include packet overhead depending on
|
|
// configuration.)
|
|
DataRate target_bitrate = DataRate::Zero();
|
|
// The allocated part of the estimated link capacity. This is more stable than
|
|
// the target as it is based on the underlying link capacity estimate. This
|
|
// should be used to change encoder configuration when the cost of change is
|
|
// high.
|
|
DataRate stable_target_bitrate = DataRate::Zero();
|
|
// Predicted packet loss ratio.
|
|
double packet_loss_ratio = 0;
|
|
// Predicted round trip time.
|
|
TimeDelta round_trip_time = TimeDelta::PlusInfinity();
|
|
// |bwe_period| is deprecated, use |stable_target_bitrate| allocation instead.
|
|
TimeDelta bwe_period = TimeDelta::PlusInfinity();
|
|
// Congestion window pushback bitrate reduction fraction. Used in
|
|
// VideoStreamEncoder to reduce the bitrate by the given fraction
|
|
// by dropping frames.
|
|
double cwnd_reduce_ratio = 0;
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // API_CALL_BITRATE_ALLOCATION_H_
|