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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_BASE_AUDIO_PROCESSING_H_
#define MEDIA_BASE_AUDIO_PROCESSING_H_
#include <string>
#include "build/build_config.h"
#include "media/base/media_export.h"
namespace media {
// This struct specifies software audio processing effects to be applied by
// Chrome to mic capture audio. If system / hardware effects replace effects in
// this struct, then the corresponding parameters in the struct should be
// disabled.
struct MEDIA_EXPORT AudioProcessingSettings {
bool echo_cancellation = true;
bool noise_suppression = true;
bool automatic_gain_control = true;
// Multi-channel is not an individual audio effect, but determines whether the
// processing algorithms should preserve multi-channel input audio.
bool multi_channel_capture_processing = true;
// If true, a system loopback stream will be used as the echo cancellation
// reference signal.
bool use_loopback_aec_reference = false;
bool operator==(const AudioProcessingSettings& b) const {
return echo_cancellation == b.echo_cancellation &&
noise_suppression == b.noise_suppression &&
automatic_gain_control == b.automatic_gain_control &&
multi_channel_capture_processing ==
b.multi_channel_capture_processing &&
use_loopback_aec_reference == b.use_loopback_aec_reference;
}
bool NeedWebrtcAudioProcessing() const {
// TODO(crbug.com/40205004): Legacy iOS-specific behavior;
// reconsider.
#if !BUILDFLAG(IS_IOS)
if (echo_cancellation || automatic_gain_control) {
return true;
}
#endif
return noise_suppression;
}
// Stringifies the settings for human-readable logging.
std::string ToString() const;
};
} // namespace media
#endif // MEDIA_BASE_AUDIO_PROCESSING_H_
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