108 lines
3.8 KiB
C++
108 lines
3.8 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/units/data_size.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/struct_parameters_parser.h"
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namespace webrtc {
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struct CongestionWindowConfig {
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static constexpr char kKey[] = "WebRTC-CongestionWindow";
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absl::optional<int> queue_size_ms;
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absl::optional<int> min_bitrate_bps;
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absl::optional<DataSize> initial_data_window;
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bool drop_frame_only = false;
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std::unique_ptr<StructParametersParser> Parser();
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static CongestionWindowConfig Parse(absl::string_view config);
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};
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struct VideoRateControlConfig {
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static constexpr char kKey[] = "WebRTC-VideoRateControl";
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absl::optional<double> pacing_factor;
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bool alr_probing = false;
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absl::optional<int> vp8_qp_max;
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absl::optional<int> vp8_min_pixels;
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bool trust_vp8 = false;
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bool trust_vp9 = false;
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double video_hysteresis = 1.0;
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// Default to 35% hysteresis for simulcast screenshare.
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double screenshare_hysteresis = 1.35;
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bool probe_max_allocation = true;
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bool bitrate_adjuster = false;
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bool adjuster_use_headroom = false;
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bool vp8_s0_boost = true;
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bool vp8_base_heavy_tl3_alloc = false;
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bool vp8_dynamic_rate = false;
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bool vp9_dynamic_rate = false;
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std::unique_ptr<StructParametersParser> Parser();
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};
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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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bool UseCongestionWindowDropFrameOnly() const;
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uint32_t CongestionWindowMinPushbackTargetBitrateBps() const;
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absl::optional<DataSize> CongestionWindowInitialDataWindow() const;
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absl::optional<double> GetPacingFactor() const;
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bool UseAlrProbing() const;
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absl::optional<int> LibvpxVp8QpMax() const;
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absl::optional<int> LibvpxVp8MinPixels() const;
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bool LibvpxVp8TrustedRateController() const;
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bool Vp8BoostBaseLayerQuality() const;
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bool Vp8DynamicRateSettings() const;
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bool LibvpxVp9TrustedRateController() const;
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bool Vp9DynamicRateSettings() 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 Vp8BaseHeavyTl3RateAllocation() const;
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bool TriggerProbeOnMaxAllocatedBitrateChange() const;
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bool UseEncoderBitrateAdjuster() const;
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bool BitrateAdjusterCanUseNetworkHeadroom() 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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const CongestionWindowConfig congestion_window_config_;
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VideoRateControlConfig video_config_;
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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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