Source/WebCore/Modules/webaudio/MediaStreamAudioSource.cpp

/*
 * Copyright (C) 2013 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. ``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
 * 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
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 */

#include "config.h"
#include "MediaStreamAudioSource.h"

#if ENABLE(MEDIA_STREAM)

#include "AudioSourceProvider.h"
#include "NotImplemented.h"
#include <wtf/UUID.h>

namespace WebCore {

Ref<MediaStreamAudioSource> MediaStreamAudioSource::create()
{
    return adoptRef(*new MediaStreamAudioSource());
}

MediaStreamAudioSource::MediaStreamAudioSource()
    : RealtimeMediaSource(ASCIILiteral("WebAudio-") + createCanonicalUUIDString(), RealtimeMediaSource::Type::Audio, "MediaStreamAudioDestinationNode")
{
}

const RealtimeMediaSourceCapabilities& MediaStreamAudioSource::capabilities() const
{
    // FIXME: implement this.
    // https://bugs.webkit.org/show_bug.cgi?id=122430
    notImplemented();
    return RealtimeMediaSourceCapabilities::emptyCapabilities();
}

const RealtimeMediaSourceSettings& MediaStreamAudioSource::settings() const
{
    // FIXME: implement this.
    // https://bugs.webkit.org/show_bug.cgi?id=122430
    notImplemented();
    return m_currentSettings;
}

void MediaStreamAudioSource::addAudioConsumer(AudioDestinationConsumer* consumer)
{
    LockHolder locker(m_audioConsumersLock);
    m_audioConsumers.append(consumer);
}

bool MediaStreamAudioSource::removeAudioConsumer(AudioDestinationConsumer* consumer)
{
    LockHolder locker(m_audioConsumersLock);
    size_t pos = m_audioConsumers.find(consumer);
    if (pos != notFound) {
        m_audioConsumers.remove(pos);
        return true;
    }
    return false;
}

void MediaStreamAudioSource::setAudioFormat(size_t numberOfChannels, float sampleRate)
{
    LockHolder locker(m_audioConsumersLock);
    for (auto& consumer : m_audioConsumers)
        consumer->setFormat(numberOfChannels, sampleRate);
}

void MediaStreamAudioSource::consumeAudio(AudioBus* bus, size_t numberOfFrames)
{
    LockHolder locker(m_audioConsumersLock);
    for (auto& consumer : m_audioConsumers)
        consumer->consumeAudio(bus, numberOfFrames);
}

} // namespace WebCore

#endif // ENABLE(MEDIA_STREAM)