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7f24fb9c1e
This quality boost means that we sometimes drop a _lot_ of frames in the base layer. It also interacts poorly with the bitrate adjuster since even if frames are dropped they are often over-sized. The setting still leaves the current behavior as default, but can be changed using the WebRTC-VideoRateControl field trial. Bug: webrtc:10155 Change-Id: I1a92ec69bab61b5148fe9d8bc391ac5ee1019367 Reviewed-on: https://webrtc-review.googlesource.com/c/122840 Commit-Queue: Erik Språng <sprang@webrtc.org> Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org> Cr-Commit-Position: refs/heads/master@{#26659}
78 lines
2.9 KiB
C++
78 lines
2.9 KiB
C++
/*
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* Copyright (c) 2019 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 RTC_BASE_EXPERIMENTS_RATE_CONTROL_SETTINGS_H_
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#define RTC_BASE_EXPERIMENTS_RATE_CONTROL_SETTINGS_H_
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#include "absl/types/optional.h"
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#include "api/transport/webrtc_key_value_config.h"
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#include "api/video_codecs/video_codec.h"
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#include "api/video_codecs/video_encoder_config.h"
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#include "rtc_base/experiments/field_trial_parser.h"
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#include "rtc_base/experiments/field_trial_units.h"
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namespace webrtc {
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class RateControlSettings final {
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public:
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~RateControlSettings();
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RateControlSettings(RateControlSettings&&);
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static RateControlSettings ParseFromFieldTrials();
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static RateControlSettings ParseFromKeyValueConfig(
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const WebRtcKeyValueConfig* const key_value_config);
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// When CongestionWindowPushback is enabled, the pacer is oblivious to
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// the congestion window. The relation between outstanding data and
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// the congestion window affects encoder allocations directly.
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bool UseCongestionWindow() const;
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int64_t GetCongestionWindowAdditionalTimeMs() const;
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bool UseCongestionWindowPushback() const;
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uint32_t CongestionWindowMinPushbackTargetBitrateBps() const;
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absl::optional<double> GetPacingFactor() const;
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bool UseAlrProbing() const;
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bool LibvpxVp8TrustedRateController() const;
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bool Vp8BoostBaseLayerQuality() const;
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bool LibvpxVp9TrustedRateController() const;
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// TODO(bugs.webrtc.org/10272): Remove one of these when we have merged
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// VideoCodecMode and VideoEncoderConfig::ContentType.
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double GetSimulcastHysteresisFactor(VideoCodecMode mode) const;
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double GetSimulcastHysteresisFactor(
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VideoEncoderConfig::ContentType content_type) const;
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bool TriggerProbeOnMaxAllocatedBitrateChange() const;
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bool UseEncoderBitrateAdjuster() const;
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private:
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explicit RateControlSettings(
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const WebRtcKeyValueConfig* const key_value_config);
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double GetSimulcastVideoHysteresisFactor() const;
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double GetSimulcastScreenshareHysteresisFactor() const;
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FieldTrialOptional<int> congestion_window_;
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FieldTrialOptional<int> congestion_window_pushback_;
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FieldTrialOptional<double> pacing_factor_;
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FieldTrialParameter<bool> alr_probing_;
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FieldTrialParameter<bool> trust_vp8_;
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FieldTrialParameter<bool> trust_vp9_;
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FieldTrialParameter<double> video_hysteresis_;
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FieldTrialParameter<double> screenshare_hysteresis_;
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FieldTrialParameter<bool> probe_max_allocation_;
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FieldTrialParameter<bool> bitrate_adjuster_;
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FieldTrialParameter<bool> vp8_s0_boost_;
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};
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} // namespace webrtc
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#endif // RTC_BASE_EXPERIMENTS_RATE_CONTROL_SETTINGS_H_
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