chromium/content/browser/renderer_host/media/audio_input_device_manager.h

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// AudioInputDeviceManager manages the audio input devices. In particular it
// communicates with MediaStreamManager and RenderFrameAudioInputStreamFactory
// on the browser IO thread, handles queries like
// enumerate/open/close/GetOpenedDeviceById from MediaStreamManager and
// GetOpenedDeviceById from RenderFrameAudioInputStreamFactory.
// The work for enumerate/open/close is handled asynchronously on Media Stream
// device thread, while GetOpenedDeviceById is synchronous on the IO thread.

#ifndef CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_DEVICE_MANAGER_H_
#define CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_DEVICE_MANAGER_H_

#include <map>
#include <string>
#include <vector>

#include "base/memory/raw_ptr.h"
#include "base/observer_list.h"
#include "base/threading/thread.h"
#include "base/unguessable_token.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "content/browser/renderer_host/media/media_stream_provider.h"
#include "content/common/content_export.h"
#include "third_party/blink/public/common/mediastream/media_stream_request.h"

namespace media {
class AudioSystem;
}

namespace content {

// Should be used on IO thread only.
class CONTENT_EXPORT AudioInputDeviceManager : public MediaStreamProvider { … };

}  // namespace content

#endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_DEVICE_MANAGER_H_