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/*
* Copyright (C) 2024 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.
*/
#include "config.h"
#include "MediaSourceHandle.h"
#if ENABLE(MEDIA_SOURCE_IN_WORKERS)
#include "MediaSource.h"
#include "MediaSourcePrivate.h"
#include "MediaSourcePrivateClient.h"
#include <wtf/TZoneMallocInlines.h>
#include <wtf/ThreadSafeRefCounted.h>
#include <wtf/ThreadSafeWeakPtr.h>
namespace WebCore {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(MediaSourceHandle);
class MediaSourceHandle::SharedPrivate final : public ThreadSafeRefCounted<SharedPrivate> {
public:
static Ref<SharedPrivate> create(MediaSource& mediaSource, MediaSourceHandle::DispatcherType&& dispatcher) { return adoptRef(*new SharedPrivate(mediaSource, WTFMove(dispatcher))); }
void dispatch(MediaSourceHandle::TaskType&& task, bool forceRunInWorker = false) const
{
m_dispatcher(WTFMove(task), forceRunInWorker);
}
void setMediaSourcePrivate(MediaSourcePrivate& mediaSourcePrivate)
{
Locker locker { m_lock };
m_private = mediaSourcePrivate;
}
RefPtr<MediaSourcePrivate> mediaSourcePrivate() const
{
Locker locker { m_lock };
return m_private.get();
}
friend class MediaSourceHandle;
SharedPrivate(MediaSource& mediaSource, MediaSourceHandle::DispatcherType&& dispatcher)
: m_client(mediaSource.client().get())
, m_isManaged(mediaSource.isManaged())
, m_dispatcher(WTFMove(dispatcher))
{
}
mutable Lock m_lock;
ThreadSafeWeakPtr<MediaSourcePrivate> m_private WTF_GUARDED_BY_LOCK(m_lock);
std::atomic<bool> m_hasEverBeenAssignedAsSrcObject { false };
ThreadSafeWeakPtr<MediaSourcePrivateClient> m_client;
const bool m_isManaged;
const MediaSourceHandle::DispatcherType m_dispatcher;
};
Ref<MediaSourceHandle> MediaSourceHandle::create(MediaSource& mediaSource, MediaSourceHandle::DispatcherType&& dispatcher, bool detachable)
{
return adoptRef(*new MediaSourceHandle(mediaSource, WTFMove(dispatcher), detachable));
}
Ref<MediaSourceHandle> MediaSourceHandle::create(Ref<MediaSourceHandle>&& other)
{
other->setDetached(false);
return other;
}
MediaSourceHandle::MediaSourceHandle(MediaSource& mediaSource, MediaSourceHandle::DispatcherType&& dispatcher, bool detachable)
: m_detachable(detachable)
, m_private(MediaSourceHandle::SharedPrivate::create(mediaSource, WTFMove(dispatcher)))
{
}
MediaSourceHandle::MediaSourceHandle(MediaSourceHandle& other)
: m_detachable(other.m_detachable)
, m_private(other.m_private)
{
ASSERT(!other.m_detached);
other.m_detached = true;
}
MediaSourceHandle::~MediaSourceHandle() = default;
bool MediaSourceHandle::canDetach() const
{
return !isDetached() && !m_private->m_hasEverBeenAssignedAsSrcObject;
}
void MediaSourceHandle::setHasEverBeenAssignedAsSrcObject()
{
m_private->m_hasEverBeenAssignedAsSrcObject = true;
}
bool MediaSourceHandle::hasEverBeenAssignedAsSrcObject() const
{
return m_private->m_hasEverBeenAssignedAsSrcObject;
}
bool MediaSourceHandle::isManaged() const
{
return m_private->m_isManaged;
}
void MediaSourceHandle::ensureOnDispatcher(MediaSourceHandle::TaskType&& task, bool forceRun) const
{
m_private->dispatch(WTFMove(task), forceRun);
}
Ref<DetachedMediaSourceHandle> MediaSourceHandle::detach()
{
return adoptRef(*new MediaSourceHandle(*this));
}
RefPtr<MediaSourcePrivateClient> MediaSourceHandle::mediaSourcePrivateClient() const
{
return m_private->m_client.get();
}
void MediaSourceHandle::mediaSourceDidOpen(MediaSourcePrivate& privateMediaSource)
{
m_private->setMediaSourcePrivate(privateMediaSource);
}
RefPtr<MediaSourcePrivate> MediaSourceHandle::mediaSourcePrivate() const
{
return m_private->mediaSourcePrivate();
}
} // namespace WebCore
#endif // MEDIA_SOURCE_IN_WORKERS
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