Index: webrtc/modules/audio_coding/audio_network_adaptor/fec_controller.cc |
diff --git a/webrtc/modules/audio_coding/audio_network_adaptor/fec_controller.cc b/webrtc/modules/audio_coding/audio_network_adaptor/fec_controller.cc |
deleted file mode 100644 |
index df9275a6eda1004287e8d9c37c32d20e0a82ed8b..0000000000000000000000000000000000000000 |
--- a/webrtc/modules/audio_coding/audio_network_adaptor/fec_controller.cc |
+++ /dev/null |
@@ -1,140 +0,0 @@ |
-/* |
- * Copyright (c) 2016 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 "webrtc/modules/audio_coding/audio_network_adaptor/fec_controller.h" |
- |
-#include <limits> |
-#include <utility> |
- |
-#include "webrtc/base/checks.h" |
- |
-namespace webrtc { |
- |
-FecController::Config::Threshold::Threshold(int low_bandwidth_bps, |
- float low_bandwidth_packet_loss, |
- int high_bandwidth_bps, |
- float high_bandwidth_packet_loss) |
- : low_bandwidth_bps(low_bandwidth_bps), |
- low_bandwidth_packet_loss(low_bandwidth_packet_loss), |
- high_bandwidth_bps(high_bandwidth_bps), |
- high_bandwidth_packet_loss(high_bandwidth_packet_loss) {} |
- |
-FecController::Config::Config(bool initial_fec_enabled, |
- const Threshold& fec_enabling_threshold, |
- const Threshold& fec_disabling_threshold, |
- int time_constant_ms, |
- const Clock* clock) |
- : initial_fec_enabled(initial_fec_enabled), |
- fec_enabling_threshold(fec_enabling_threshold), |
- fec_disabling_threshold(fec_disabling_threshold), |
- time_constant_ms(time_constant_ms), |
- clock(clock) {} |
- |
-FecController::FecController(const Config& config, |
- std::unique_ptr<SmoothingFilter> smoothing_filter) |
- : config_(config), |
- fec_enabled_(config.initial_fec_enabled), |
- packet_loss_smoother_(std::move(smoothing_filter)), |
- fec_enabling_threshold_info_(config_.fec_enabling_threshold), |
- fec_disabling_threshold_info_(config_.fec_disabling_threshold) { |
- RTC_DCHECK_LE(fec_enabling_threshold_info_.slope, 0); |
- RTC_DCHECK_LE(fec_enabling_threshold_info_.slope, 0); |
- RTC_DCHECK_LE( |
- GetPacketLossThreshold(config_.fec_enabling_threshold.low_bandwidth_bps, |
- config_.fec_disabling_threshold, |
- fec_disabling_threshold_info_), |
- config_.fec_enabling_threshold.low_bandwidth_packet_loss); |
- RTC_DCHECK_LE( |
- GetPacketLossThreshold(config_.fec_enabling_threshold.high_bandwidth_bps, |
- config_.fec_disabling_threshold, |
- fec_disabling_threshold_info_), |
- config_.fec_enabling_threshold.high_bandwidth_packet_loss); |
-} |
- |
-FecController::FecController(const Config& config) |
- : FecController( |
- config, |
- std::unique_ptr<SmoothingFilter>( |
- new SmoothingFilterImpl(config.time_constant_ms, config.clock))) { |
-} |
- |
-FecController::~FecController() = default; |
- |
-void FecController::UpdateNetworkMetrics( |
- const NetworkMetrics& network_metrics) { |
- if (network_metrics.uplink_bandwidth_bps) |
- uplink_bandwidth_bps_ = network_metrics.uplink_bandwidth_bps; |
- if (network_metrics.uplink_packet_loss_fraction) { |
- packet_loss_smoother_->AddSample( |
- *network_metrics.uplink_packet_loss_fraction); |
- } |
-} |
- |
-void FecController::MakeDecision( |
- AudioNetworkAdaptor::EncoderRuntimeConfig* config) { |
- RTC_DCHECK(!config->enable_fec); |
- RTC_DCHECK(!config->uplink_packet_loss_fraction); |
- |
- const auto& packet_loss = packet_loss_smoother_->GetAverage(); |
- |
- fec_enabled_ = fec_enabled_ ? !FecDisablingDecision(packet_loss) |
- : FecEnablingDecision(packet_loss); |
- |
- config->enable_fec = rtc::Optional<bool>(fec_enabled_); |
- |
- config->uplink_packet_loss_fraction = |
- rtc::Optional<float>(packet_loss ? *packet_loss : 0.0); |
-} |
- |
-FecController::ThresholdInfo::ThresholdInfo( |
- const Config::Threshold& threshold) { |
- int bandwidth_diff_bps = |
- threshold.high_bandwidth_bps - threshold.low_bandwidth_bps; |
- float packet_loss_diff = threshold.high_bandwidth_packet_loss - |
- threshold.low_bandwidth_packet_loss; |
- slope = bandwidth_diff_bps == 0 ? 0.0 : packet_loss_diff / bandwidth_diff_bps; |
- offset = |
- threshold.low_bandwidth_packet_loss - slope * threshold.low_bandwidth_bps; |
-} |
- |
-float FecController::GetPacketLossThreshold( |
- int bandwidth_bps, |
- const Config::Threshold& threshold, |
- const ThresholdInfo& threshold_info) const { |
- if (bandwidth_bps < threshold.low_bandwidth_bps) |
- return std::numeric_limits<float>::max(); |
- if (bandwidth_bps >= threshold.high_bandwidth_bps) |
- return threshold.high_bandwidth_packet_loss; |
- return threshold_info.offset + threshold_info.slope * bandwidth_bps; |
-} |
- |
-bool FecController::FecEnablingDecision( |
- const rtc::Optional<float>& packet_loss) const { |
- if (!uplink_bandwidth_bps_) |
- return false; |
- if (!packet_loss) |
- return false; |
- return *packet_loss >= GetPacketLossThreshold(*uplink_bandwidth_bps_, |
- config_.fec_enabling_threshold, |
- fec_enabling_threshold_info_); |
-} |
- |
-bool FecController::FecDisablingDecision( |
- const rtc::Optional<float>& packet_loss) const { |
- if (!uplink_bandwidth_bps_) |
- return false; |
- if (!packet_loss) |
- return false; |
- return *packet_loss <= GetPacketLossThreshold(*uplink_bandwidth_bps_, |
- config_.fec_disabling_threshold, |
- fec_disabling_threshold_info_); |
-} |
- |
-} // namespace webrtc |