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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
* Copyright (C) 2017 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER 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 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 "MediaSourceRegistry.h"
#if ENABLE(MEDIA_SOURCE)
#include "MediaSource.h"
#include "ScriptExecutionContext.h"
#include <wtf/MainThread.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/URL.h>
namespace WebCore {
MediaSourceRegistry& MediaSourceRegistry::registry()
{
ASSERT(isMainThread());
static NeverDestroyed<MediaSourceRegistry> instance;
return instance;
}
void MediaSourceRegistry::registerURL(const ScriptExecutionContext& context, const URL& url, URLRegistrable& registrable)
{
ASSERT(®istrable.registry() == this);
ASSERT(isMainThread());
auto& urlString = url.string();
m_urlsPerContext.add(context.identifier(), HashSet<String>()).iterator->value.add(urlString);
Ref source = downcast<MediaSource>(registrable);
source->addedToRegistry();
m_mediaSources.add(urlString, std::pair { WTFMove(source), context.identifier() });
}
void MediaSourceRegistry::unregisterURL(const URL& url, const SecurityOriginData&)
{
// MediaSource objects are not exposed to workers.
if (!isMainThread())
return;
auto& urlString = url.string();
auto [source, contextIdentifier] = m_mediaSources.take(urlString);
if (!source)
return;
source->removedFromRegistry();
auto m_urlsPerContextIterator = m_urlsPerContext.find(contextIdentifier);
ASSERT(m_urlsPerContextIterator != m_urlsPerContext.end());
ASSERT(m_urlsPerContextIterator->value.contains(urlString));
m_urlsPerContextIterator->value.remove(urlString);
if (m_urlsPerContextIterator->value.isEmpty())
m_urlsPerContext.remove(m_urlsPerContextIterator);
}
void MediaSourceRegistry::unregisterURLsForContext(const ScriptExecutionContext& context)
{
// MediaSource objects are not exposed to workers.
if (!isMainThread())
return;
auto urls = m_urlsPerContext.take(context.identifier());
for (auto& url : urls) {
ASSERT(m_mediaSources.contains(url));
auto [source, contextIdentifier] = m_mediaSources.take(url);
source->removedFromRegistry();
}
}
URLRegistrable* MediaSourceRegistry::lookup(const String& url) const
{
ASSERT(isMainThread());
if (auto it = m_mediaSources.find(url); it != m_mediaSources.end())
return it->value.first.get();
return nullptr;
}
MediaSourceRegistry::MediaSourceRegistry()
{
MediaSource::setRegistry(this);
}
} // namespace WebCore
#endif
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