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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASTREAM_MEDIA_STREAM_AUDIO_PROCESSING_LAYOUT_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASTREAM_MEDIA_STREAM_AUDIO_PROCESSING_LAYOUT_H_
#include <optional>
#include "media/base/audio_processing.h"
#include "third_party/blink/renderer/modules/mediastream/media_stream_constraints_util.h"
#include "third_party/blink/renderer/modules/modules_export.h"
namespace blink {
// Source of truth for media stream audio processing configuration.
// Based on the requested AudioProcessingProperties and available device
// effects, determines what processing should be done in WebRTC and what
// should be delegated to the platform, as well as configures necessary
// AudioProcessingSettings for WebRTC processing.
class MODULES_EXPORT MediaStreamAudioProcessingLayout {
public:
static bool IsIndependentSystemNsAllowedForTests();
static media::AudioProcessingSettings ComputeWebrtcProcessingSettingsForTests(
const AudioProcessingProperties& properties,
int enabled_platform_effects,
bool multichannel_processing);
static MediaStreamAudioProcessingLayout None();
static std::optional<MediaStreamAudioProcessingLayout>
MaybeMakeForProcessedDisplayCapture(
const AudioProcessingProperties& properties,
int channels);
static MediaStreamAudioProcessingLayout MakeForUnprocessedLocalSource(
const AudioProcessingProperties& properties,
int available_platform_effects);
static MediaStreamAudioProcessingLayout MakeForUnprocessedLocalSourceForTests(
bool platform_aec,
int available_platform_effects);
MediaStreamAudioProcessingLayout(const AudioProcessingProperties& properties,
int available_platform_effects,
int channels);
const AudioProcessingProperties& properties() const { return properties_; }
const media::AudioProcessingSettings& webrtc_processing_settings() const {
return webrtc_processing_settings_;
}
int platform_effects() const { return platform_effects_; }
bool NeedApmInAudioService() const;
bool NeedWebrtcAudioProcessing() const;
bool AecIsPlatformProvided() const {
return echo_canceller_.IsPlatformProvided();
}
bool NoiseSuppressionInTandem() const;
bool AutomaticGainControlInTandem() const;
private:
MediaStreamAudioProcessingLayout(const AudioProcessingProperties& properties,
const EchoCanceller& echo_canceller,
int available_platform_effects,
int channels);
MediaStreamAudioProcessingLayout(
const AudioProcessingProperties& properties,
const EchoCanceller& echo_canceller,
int platform_effects,
const media::AudioProcessingSettings& webrtc_processing_settings);
const AudioProcessingProperties properties_;
const EchoCanceller echo_canceller_;
const int platform_effects_ = 0;
const media::AudioProcessingSettings webrtc_processing_settings_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASTREAM_MEDIA_STREAM_AUDIO_PROCESSING_LAYOUT_H_
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