/*
 * Copyright (C) 2011 Google 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.
 */

#include "config.h"
#include "modules/mediastream/MediaStreamRegistry.h"

#include "core/html/HTMLMediaElement.h"
#include "modules/mediastream/MediaStream.h"
#include "platform/weborigin/KURL.h"
#include "wtf/MainThread.h"

namespace blink {

MediaStreamRegistry& MediaStreamRegistry::registry()
{
    // Since WebWorkers cannot obtain MediaStream objects, we should be on the main thread.
    ASSERT(isMainThread());
    DEFINE_STATIC_LOCAL(MediaStreamRegistry, instance, ());
    return instance;
}

void MediaStreamRegistry::registerURL(SecurityOrigin*, const KURL& url, URLRegistrable* stream)
{
    ASSERT(&stream->registry() == this);
    ASSERT(isMainThread());
    m_streamDescriptors.set(url.string(), static_cast<MediaStream*>(stream)->descriptor());
}

void MediaStreamRegistry::unregisterURL(const KURL& url)
{
    ASSERT(isMainThread());
    m_streamDescriptors.remove(url.string());
}

bool MediaStreamRegistry::contains(const String& url)
{
    ASSERT(isMainThread());
    return m_streamDescriptors.contains(url);
}

MediaStreamDescriptor* MediaStreamRegistry::lookupMediaStreamDescriptor(const String& url)
{
    ASSERT(isMainThread());
    return m_streamDescriptors.get(url);
}

MediaStreamRegistry::MediaStreamRegistry()
{
    HTMLMediaElement::setMediaStreamRegistry(this);
}

} // namespace blink