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fa07b43074
If playout audio is temporarily stereo, the AEC will currently enter stereo processing mode indefinitely. To save CPU and improve AEC performance, this CL adds support for falling back to mono after a period of no stereo. The feature is enabled by default in the AEC3 config. Bug: chromium:1295710 Change-Id: I690b5b22f8407f950bf41f3bcaa9ca0138452157 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/258421 Reviewed-by: Per Åhgren <peah@webrtc.org> Commit-Queue: Sam Zackrisson <saza@webrtc.org> Cr-Commit-Position: refs/heads/main@{#36502}
71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
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/*
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* Copyright (c) 2022 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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#include "modules/audio_processing/aec3/config_selector.h"
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#include "rtc_base/checks.h"
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namespace webrtc {
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namespace {
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// Validates that the mono and the multichannel configs have compatible fields.
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bool CompatibleConfigs(const EchoCanceller3Config& mono_config,
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const EchoCanceller3Config& multichannel_config) {
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if (mono_config.delay.fixed_capture_delay_samples !=
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multichannel_config.delay.fixed_capture_delay_samples) {
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return false;
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}
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if (mono_config.filter.export_linear_aec_output !=
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multichannel_config.filter.export_linear_aec_output) {
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return false;
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}
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if (mono_config.filter.high_pass_filter_echo_reference !=
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multichannel_config.filter.high_pass_filter_echo_reference) {
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return false;
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}
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if (mono_config.multi_channel.detect_stereo_content !=
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multichannel_config.multi_channel.detect_stereo_content) {
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return false;
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}
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if (mono_config.multi_channel.stereo_detection_timeout_threshold_seconds !=
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multichannel_config.multi_channel
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.stereo_detection_timeout_threshold_seconds) {
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return false;
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}
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return true;
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}
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} // namespace
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ConfigSelector::ConfigSelector(
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const EchoCanceller3Config& config,
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const absl::optional<EchoCanceller3Config>& multichannel_config,
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int num_render_input_channels)
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: config_(config), multichannel_config_(multichannel_config) {
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if (multichannel_config_.has_value()) {
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RTC_DCHECK(CompatibleConfigs(config_, *multichannel_config_));
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}
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Update(!config_.multi_channel.detect_stereo_content &&
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num_render_input_channels > 1);
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RTC_DCHECK(active_config_);
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}
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void ConfigSelector::Update(bool multichannel_content) {
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if (multichannel_content && multichannel_config_.has_value()) {
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active_config_ = &(*multichannel_config_);
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} else {
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active_config_ = &config_;
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}
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}
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} // namespace webrtc
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