chromium/third_party/blink/renderer/modules/webrtc/webrtc_audio_device_impl.h

// Copyright 2013 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_WEBRTC_WEBRTC_AUDIO_DEVICE_IMPL_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBRTC_WEBRTC_AUDIO_DEVICE_IMPL_H_

#include <stdint.h>

#include <list>
#include <memory>
#include <string>

#include "base/memory/raw_ptr.h"
#include "base/memory/scoped_refptr.h"
#include "base/threading/thread_checker.h"
#include "base/time/time.h"
#include "base/unguessable_token.h"
#include "media/base/audio_glitch_info.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/modules/webrtc/webrtc_audio_device_not_impl.h"
#include "third_party/blink/renderer/platform/webrtc/webrtc_source.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"

// A WebRtcAudioDeviceImpl instance implements the abstract interface
// webrtc::AudioDeviceModule which makes it possible for a user (e.g. webrtc::
// VoiceEngine) to register this class as an external AudioDeviceModule (ADM).
//
// Implementation notes:
//
//  - This class must be created and destroyed on the main render thread and
//    most methods are called on the same thread. However, some methods are
//    also called on a Libjingle worker thread. RenderData is called on the
//    AudioOutputDevice thread and CaptureData on the AudioInputDevice thread.
//    To summarize: this class lives on four different threads, so it is
//    important to be careful with the order in which locks are acquired in
//    order to avoid potential deadlocks.
//
namespace blink {
class WebRtcAudioRenderer;
}

namespace media {
class AudioBus;
}

namespace blink {

class ProcessedLocalAudioSource;

// Note that this class inherits from webrtc::AudioDeviceModule but due to
// the high number of non-implemented methods, we move the cruft over to the
// WebRtcAudioDeviceNotImpl.
class MODULES_EXPORT WebRtcAudioDeviceImpl
    : public WebRtcAudioDeviceNotImpl,
      public blink::WebRtcAudioRendererSource,
      public blink::WebRtcPlayoutDataSource { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBRTC_WEBRTC_AUDIO_DEVICE_IMPL_H_