mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-15 23:01:21 +01:00
3bdbc84888
Since the pushback controller doesn't strictly adhere to the congestion window, it better belongs together with the congestion controller logic. Also ensuring that it does not override the configured min bitrate. Bug: webrtc:9586 Change-Id: I57dcfc946d470247e66c67adabddaafa3d9d83ad Reviewed-on: https://webrtc-review.googlesource.com/c/105102 Commit-Queue: Sebastian Jansson <srte@webrtc.org> Reviewed-by: Ying Wang <yinwa@webrtc.org> Cr-Commit-Position: refs/heads/master@{#25115}
40 lines
1.6 KiB
C++
40 lines
1.6 KiB
C++
/*
|
|
* Copyright (c) 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 MODULES_CONGESTION_CONTROLLER_GOOG_CC_CONGESTION_WINDOW_PUSHBACK_CONTROLLER_H_
|
|
#define MODULES_CONGESTION_CONTROLLER_GOOG_CC_CONGESTION_WINDOW_PUSHBACK_CONTROLLER_H_
|
|
|
|
#include "api/transport/network_types.h"
|
|
|
|
namespace webrtc {
|
|
|
|
// This class enables pushback from congestion window directly to video encoder.
|
|
// When the congestion window is filling up, the video encoder target bitrate
|
|
// will be reduced accordingly to accommodate the network changes. To avoid
|
|
// pausing video too frequently, a minimum encoder target bitrate threshold is
|
|
// used to prevent video pause due to a full congestion window.
|
|
class CongestionWindowPushbackController {
|
|
public:
|
|
CongestionWindowPushbackController();
|
|
void UpdateOutstandingData(size_t outstanding_bytes);
|
|
void UpdateMaxOutstandingData(size_t max_outstanding_bytes);
|
|
uint32_t UpdateTargetBitrate(uint32_t bitrate_bps);
|
|
void SetDataWindow(DataSize data_window);
|
|
|
|
private:
|
|
absl::optional<DataSize> current_data_window_;
|
|
size_t outstanding_bytes_ = 0;
|
|
uint32_t min_pushback_target_bitrate_bps_;
|
|
double encoding_rate_ratio_ = 1.0;
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // MODULES_CONGESTION_CONTROLLER_GOOG_CC_CONGESTION_WINDOW_PUSHBACK_CONTROLLER_H_
|