Source/WebKit/WebProcess/GPU/media/RemoteAudioHardwareListener.h

/*
 * Copyright (C) 2021 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#if ENABLE(GPU_PROCESS)

#include "GPUProcessConnection.h"
#include "MessageReceiver.h"
#include "RemoteAudioHardwareListenerIdentifier.h"
#include <WebCore/AudioHardwareListener.h>

namespace IPC {
class Connection;
}

namespace WebKit {

class GPUProcessConnection;
class WebProcess;

class RemoteAudioHardwareListener final
    : public WebCore::AudioHardwareListener
    , private GPUProcessConnection::Client
    , private IPC::MessageReceiver {
    WTF_MAKE_FAST_ALLOCATED;
public:
    static Ref<RemoteAudioHardwareListener> create(WebCore::AudioHardwareListener::Client&, WebProcess&);
    ~RemoteAudioHardwareListener();

private:
    RemoteAudioHardwareListener(WebCore::AudioHardwareListener::Client&, WebProcess&);

    // IPC::MessageReceiver
    void didReceiveMessage(IPC::Connection&, IPC::Decoder&) final;

    // GPUProcessConnection::Client
    void gpuProcessConnectionDidClose(GPUProcessConnection&) final;

    // Messages
    void audioHardwareDidBecomeActive();
    void audioHardwareDidBecomeInactive();
    void audioOutputDeviceChanged(size_t bufferSizeMinimum, size_t bufferSizeMaximum);

    RemoteAudioHardwareListenerIdentifier m_identifier;
    WeakPtr<GPUProcessConnection> m_gpuProcessConnection;
};

}

#endif