blob: 1c38e927dc46ddbea534f6ff89734b4034973bd4 [file] [log] [blame]
* Copyright (c) 2019 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.
#include "absl/types/optional.h"
#include "api/transport/webrtc_key_value_config.h"
#include "api/units/data_size.h"
#include "api/video_codecs/video_codec.h"
#include "api/video_codecs/video_encoder_config.h"
#include "rtc_base/experiments/struct_parameters_parser.h"
namespace webrtc {
struct CongestionWindowConfig {
static constexpr char kKey[] = "WebRTC-CongestionWindow";
absl::optional<int> queue_size_ms;
absl::optional<int> min_bitrate_bps;
absl::optional<DataSize> initial_data_window;
bool drop_frame_only = false;
std::unique_ptr<StructParametersParser> Parser();
static CongestionWindowConfig Parse(absl::string_view config);
struct VideoRateControlConfig {
static constexpr char kKey[] = "WebRTC-VideoRateControl";
absl::optional<double> pacing_factor;
bool alr_probing = false;
absl::optional<int> vp8_qp_max;
absl::optional<int> vp8_min_pixels;
bool trust_vp8 = true;
bool trust_vp9 = true;
double video_hysteresis = 1.2;
// Default to 35% hysteresis for simulcast screenshare.
double screenshare_hysteresis = 1.35;
bool probe_max_allocation = true;
bool bitrate_adjuster = true;
bool adjuster_use_headroom = true;
bool vp8_s0_boost = false;
bool vp8_base_heavy_tl3_alloc = false;
std::unique_ptr<StructParametersParser> Parser();
class RateControlSettings final {
static RateControlSettings ParseFromFieldTrials();
static RateControlSettings ParseFromKeyValueConfig(
const WebRtcKeyValueConfig* const key_value_config);
// When CongestionWindowPushback is enabled, the pacer is oblivious to
// the congestion window. The relation between outstanding data and
// the congestion window affects encoder allocations directly.
bool UseCongestionWindow() const;
int64_t GetCongestionWindowAdditionalTimeMs() const;
bool UseCongestionWindowPushback() const;
bool UseCongestionWindowDropFrameOnly() const;
uint32_t CongestionWindowMinPushbackTargetBitrateBps() const;
absl::optional<DataSize> CongestionWindowInitialDataWindow() const;
absl::optional<double> GetPacingFactor() const;
bool UseAlrProbing() const;
absl::optional<int> LibvpxVp8QpMax() const;
absl::optional<int> LibvpxVp8MinPixels() const;
bool LibvpxVp8TrustedRateController() const;
bool Vp8BoostBaseLayerQuality() const;
bool Vp8DynamicRateSettings() const;
bool LibvpxVp9TrustedRateController() const;
bool Vp9DynamicRateSettings() const;
// TODO( Remove one of these when we have merged
// VideoCodecMode and VideoEncoderConfig::ContentType.
double GetSimulcastHysteresisFactor(VideoCodecMode mode) const;
double GetSimulcastHysteresisFactor(
VideoEncoderConfig::ContentType content_type) const;
bool Vp8BaseHeavyTl3RateAllocation() const;
bool TriggerProbeOnMaxAllocatedBitrateChange() const;
bool UseEncoderBitrateAdjuster() const;
bool BitrateAdjusterCanUseNetworkHeadroom() const;
explicit RateControlSettings(
const WebRtcKeyValueConfig* const key_value_config);
CongestionWindowConfig congestion_window_config_;
VideoRateControlConfig video_config_;
} // namespace webrtc