mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-14 06:10:40 +01:00
e1d7b23915
Bug: None Change-Id: I3c6da916ce5f4a32ff47bfb0894b00f11fbf7823 Reviewed-on: https://webrtc-review.googlesource.com/86605 Commit-Queue: Ying Wang <yinwa@webrtc.org> Reviewed-by: Sebastian Jansson <srte@webrtc.org> Reviewed-by: Christoffer Rodbro <crodbro@webrtc.org> Cr-Commit-Position: refs/heads/master@{#24008}
43 lines
1.7 KiB
C++
43 lines
1.7 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_CONGESTION_WINDOW_PUSHBACK_CONTROLLER_H_
|
|
#define MODULES_CONGESTION_CONTROLLER_CONGESTION_WINDOW_PUSHBACK_CONTROLLER_H_
|
|
|
|
#include "api/transport/network_types.h"
|
|
#include "common_types.h" // NOLINT(build/include)
|
|
#include "rtc_base/criticalsection.h"
|
|
#include "rtc_base/format_macros.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_CONGESTION_WINDOW_PUSHBACK_CONTROLLER_H_
|