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/*
* Copyright (C) 2021 Sony Interactive Entertainment Inc.
*
* 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 "WCContentBufferManager.h"
#if USE(GRAPHICS_LAYER_WC)
#include "WCContentBuffer.h"
#include <wtf/HashSet.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/TZoneMallocInlines.h>
namespace WebKit {
class WCContentBufferManager::ProcessInfo {
WTF_MAKE_TZONE_ALLOCATED_INLINE(WCContentBufferManager);
public:
ProcessInfo(WCContentBufferManager& manager, WebCore::ProcessIdentifier processIdentifier)
: m_manager(manager)
, m_processIdentifier(processIdentifier) { }
std::optional<WCContentBufferIdentifier> acquireContentBufferIdentifier(WebCore::TextureMapperPlatformLayer* platformLayer)
{
// FIXME: TextureMapperGCGLPlatformLayer doesn't support double buffering yet.
// TextureMapperPlatformLayer can acquire a single WCContentBufferIdentifier.
auto contentBufferAddResult = m_contentBuffers.ensure(platformLayer, [&] {
return makeUnique<WCContentBuffer>(m_manager, m_processIdentifier, platformLayer);
});
WCContentBuffer* buffer = contentBufferAddResult.iterator->value.get();
auto identifier = buffer->identifier();
auto identifierAddResult = m_validIdentifiers.add(identifier, buffer);
if (!identifierAddResult.isNewEntry)
return std::nullopt;
return identifier;
}
WCContentBuffer* releaseContentBufferIdentifier(WCContentBufferIdentifier identifier)
{
return m_validIdentifiers.take(identifier);
}
void removeContentBuffer(WCContentBuffer& contentBuffer)
{
m_validIdentifiers.remove(contentBuffer.identifier());
m_contentBuffers.remove(contentBuffer.platformLayer());
}
private:
WCContentBufferManager& m_manager;
WebCore::ProcessIdentifier m_processIdentifier;
HashMap<WebCore::TextureMapperPlatformLayer*, std::unique_ptr<WCContentBuffer>> m_contentBuffers;
HashMap<WCContentBufferIdentifier, WCContentBuffer*> m_validIdentifiers;
};
WCContentBufferManager& WCContentBufferManager::singleton()
{
static NeverDestroyed<WCContentBufferManager> contentBufferManager;
return contentBufferManager;
}
std::optional<WCContentBufferIdentifier> WCContentBufferManager::acquireContentBufferIdentifier(WebCore::ProcessIdentifier processIdentifier, WebCore::TextureMapperPlatformLayer* platformLayer)
{
auto processAddResult = m_processMap.ensure(processIdentifier, [&] {
return makeUnique<ProcessInfo>(*this, processIdentifier);
});
return processAddResult.iterator->value->acquireContentBufferIdentifier(platformLayer);
}
WCContentBuffer* WCContentBufferManager::releaseContentBufferIdentifier(WebCore::ProcessIdentifier processIdentifier, WCContentBufferIdentifier contentBufferIdentifier)
{
ASSERT(m_processMap.contains(processIdentifier));
return m_processMap.get(processIdentifier)->releaseContentBufferIdentifier(contentBufferIdentifier);
}
void WCContentBufferManager::removeContentBuffer(WebCore::ProcessIdentifier processIdentifier, WCContentBuffer& contentBuffer)
{
ASSERT(m_processMap.contains(processIdentifier));
m_processMap.get(processIdentifier)->removeContentBuffer(contentBuffer);
}
void WCContentBufferManager::removeAllContentBuffersForProcess(WebCore::ProcessIdentifier processIdentifier)
{
m_processMap.remove(processIdentifier);
}
} // namespace WebKit
#endif // USE(GRAPHICS_LAYER_WC)
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