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ac426265b6
Replace factory that takes optional FieldTrialView with a constructor that takes non-optional reference to the same interface - all callers already guarantee it is not nullptr Replace several local IsEnabled/IsDisabled helpers with the same helpers in FieldTrialView In CongestionWindowPushbackController tests pass field trials bypassing global field trial string Bug: webrtc:42220378 Change-Id: Ic49ad78919d834a5e3b9b69545d3b39088023a75 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/349900 Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Reviewed-by: Erik Språng <sprang@webrtc.org> Cr-Commit-Position: refs/heads/main@{#42270}
47 lines
1.8 KiB
C++
47 lines
1.8 KiB
C++
/*
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* Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_CONGESTION_CONTROLLER_GOOG_CC_CONGESTION_WINDOW_PUSHBACK_CONTROLLER_H_
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#define MODULES_CONGESTION_CONTROLLER_GOOG_CC_CONGESTION_WINDOW_PUSHBACK_CONTROLLER_H_
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#include <stdint.h>
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#include "absl/types/optional.h"
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#include "api/field_trials_view.h"
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#include "api/units/data_size.h"
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namespace webrtc {
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// This class enables pushback from congestion window directly to video encoder.
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// When the congestion window is filling up, the video encoder target bitrate
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// will be reduced accordingly to accommodate the network changes. To avoid
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// pausing video too frequently, a minimum encoder target bitrate threshold is
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// used to prevent video pause due to a full congestion window.
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class CongestionWindowPushbackController {
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public:
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explicit CongestionWindowPushbackController(
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const FieldTrialsView& key_value_config);
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void UpdateOutstandingData(int64_t outstanding_bytes);
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void UpdatePacingQueue(int64_t pacing_bytes);
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uint32_t UpdateTargetBitrate(uint32_t bitrate_bps);
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void SetDataWindow(DataSize data_window);
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private:
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const bool add_pacing_;
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const uint32_t min_pushback_target_bitrate_bps_;
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absl::optional<DataSize> current_data_window_;
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int64_t outstanding_bytes_ = 0;
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int64_t pacing_bytes_ = 0;
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double encoding_rate_ratio_ = 1.0;
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};
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} // namespace webrtc
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#endif // MODULES_CONGESTION_CONTROLLER_GOOG_CC_CONGESTION_WINDOW_PUSHBACK_CONTROLLER_H_
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