chromium/services/audio/audio_processor_handler.h

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef SERVICES_AUDIO_AUDIO_PROCESSOR_HANDLER_H_
#define SERVICES_AUDIO_AUDIO_PROCESSOR_HANDLER_H_

#include <atomic>
#include <string_view>

#include "base/memory/raw_ptr.h"
#include "base/sequence_checker.h"
#include "media/audio/aecdump_recording_manager.h"
#include "media/base/audio_glitch_info.h"
#include "media/base/audio_processing.h"
#include "media/mojo/mojom/audio_processing.mojom.h"
#include "media/webrtc/audio_processor.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "services/audio/reference_output.h"

namespace media {
class AudioBus;
class AudioParameters;
}  // namespace media

namespace audio {

// Encapsulates audio processing effects in the audio process, using a
// media::AudioProcessor. Forwards capture audio, playout audio, and
// control calls to the processor.
//
// The class can be operated on by three different sequences:
// - An owning sequence, which performs construction, destruction, getting
// stats, and similar control flow.
// - A capture thread, which calls ProcessCapturedAudio().
// - A playout thread, which calls OnPlayoutData().
//
// All functions should be called on the owning thread, unless otherwise
// specified. It is the responsibility of the owner to ensure that the playout
// thread and capture thread stop calling into the AudioProcessorHandler before
// destruction.
class AudioProcessorHandler final : public ReferenceOutput::Listener,
                                    public media::mojom::AudioProcessorControls,
                                    public media::AecdumpRecordingSource { … };

}  // namespace audio

#endif  // SERVICES_AUDIO_AUDIO_PROCESSOR_HANDLER_H_