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// Copyright 2018 The Chromium Authors. All rights reserved.
// 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;
// Keytap removal, sometimes called "experimental noise suppression".
bool transient_noise_suppression = true;
bool automatic_gain_control = true;
// TODO(bugs.webrtc.org/7494): Remove since it is unused. On non-Chromecast
// platforms, it has no effect.
bool experimental_automatic_gain_control = true;
bool high_pass_filter = 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;
bool stereo_mirroring = false;
// TODO(https://crbug.com/1215061): Deprecate this setting.
// This flag preserves the behavior of the to-be-deprecated flag / constraint
// |AudioProcessingProperties::goog_experimental_echo_cancellation|: It has no
// effect on what effects are enabled, but for legacy reasons, it forces APM
// to be created and used.
bool force_apm_creation =
#if defined(OS_ANDROID)
false;
#else
true;
#endif
bool operator==(const AudioProcessingSettings& b) const {
return echo_cancellation == b.echo_cancellation &&
noise_suppression == b.noise_suppression &&
transient_noise_suppression == b.transient_noise_suppression &&
automatic_gain_control == b.automatic_gain_control &&
experimental_automatic_gain_control ==
b.experimental_automatic_gain_control &&
high_pass_filter == b.high_pass_filter &&
multi_channel_capture_processing ==
b.multi_channel_capture_processing &&
stereo_mirroring == b.stereo_mirroring &&
force_apm_creation == b.force_apm_creation;
}
// Stringifies the settings for human-readable logging.
std::string ToString() const;
};
} // namespace media
#endif // MEDIA_BASE_AUDIO_PROCESSING_H_
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