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/*
* Copyright (c) 2022 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 "modules/audio_processing/aec3/config_selector.h"
#include "rtc_base/checks.h"
namespace webrtc {
namespace {
// Validates that the mono and the multichannel configs have compatible fields.
bool CompatibleConfigs(const EchoCanceller3Config& mono_config,
const EchoCanceller3Config& multichannel_config) {
if (mono_config.delay.fixed_capture_delay_samples !=
multichannel_config.delay.fixed_capture_delay_samples) {
return false;
}
if (mono_config.filter.export_linear_aec_output !=
multichannel_config.filter.export_linear_aec_output) {
return false;
}
if (mono_config.filter.high_pass_filter_echo_reference !=
multichannel_config.filter.high_pass_filter_echo_reference) {
return false;
}
if (mono_config.multi_channel.detect_stereo_content !=
multichannel_config.multi_channel.detect_stereo_content) {
return false;
}
return true;
}
} // namespace
ConfigSelector::ConfigSelector(
const EchoCanceller3Config& config,
const absl::optional<EchoCanceller3Config>& multichannel_config,
int num_render_input_channels)
: config_(config), multichannel_config_(multichannel_config) {
if (multichannel_config_.has_value()) {
RTC_DCHECK(CompatibleConfigs(config_, *multichannel_config_));
}
Update(!config_.multi_channel.detect_stereo_content &&
num_render_input_channels > 1);
RTC_DCHECK(active_config_);
}
void ConfigSelector::Update(bool multichannel_content) {
if (multichannel_content && multichannel_config_.has_value()) {
active_config_ = &(*multichannel_config_);
} else {
active_config_ = &config_;
}
}
} // namespace webrtc
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