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/*
* Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
* Copyright (C) 2015 Igalia S.L.
*
* 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 "BitmapTexturePool.h"
#if USE(TEXTURE_MAPPER_GL)
#include "BitmapTextureGL.h"
#endif
namespace WebCore {
static const Seconds releaseUnusedSecondsTolerance { 3_s };
static const Seconds releaseUnusedTexturesTimerInterval { 500_ms };
#if USE(TEXTURE_MAPPER_GL)
BitmapTexturePool::BitmapTexturePool(const TextureMapperContextAttributes& contextAttributes)
: m_contextAttributes(contextAttributes)
, m_releaseUnusedTexturesTimer(RunLoop::current(), this, &BitmapTexturePool::releaseUnusedTexturesTimerFired)
{
}
#endif
RefPtr<BitmapTexture> BitmapTexturePool::acquireTexture(const IntSize& size, const BitmapTexture::Flags flags)
{
Entry* selectedEntry = std::find_if(m_textures.begin(), m_textures.end(),
[&](Entry& entry) {
return entry.m_texture->refCount() == 1
&& entry.m_texture->size() == size
&& (entry.m_texture->flags() & BitmapTexture::DepthBuffer) == (flags & BitmapTexture::DepthBuffer);
});
if (selectedEntry == m_textures.end()) {
m_textures.append(Entry(createTexture(flags)));
selectedEntry = &m_textures.last();
}
scheduleReleaseUnusedTextures();
selectedEntry->markIsInUse();
return selectedEntry->m_texture.copyRef();
}
void BitmapTexturePool::scheduleReleaseUnusedTextures()
{
if (m_releaseUnusedTexturesTimer.isActive())
return;
m_releaseUnusedTexturesTimer.startOneShot(releaseUnusedTexturesTimerInterval);
}
void BitmapTexturePool::releaseUnusedTexturesTimerFired()
{
if (m_textures.isEmpty())
return;
// Delete entries, which have been unused in releaseUnusedSecondsTolerance.
MonotonicTime minUsedTime = MonotonicTime::now() - releaseUnusedSecondsTolerance;
m_textures.removeAllMatching([&minUsedTime](const Entry& entry) {
return entry.canBeReleased(minUsedTime);
});
if (!m_textures.isEmpty())
scheduleReleaseUnusedTextures();
}
RefPtr<BitmapTexture> BitmapTexturePool::createTexture(const BitmapTexture::Flags flags)
{
#if USE(TEXTURE_MAPPER_GL)
return BitmapTextureGL::create(m_contextAttributes, flags);
#else
UNUSED_PARAM(flags);
return nullptr;
#endif
}
} // namespace WebCore
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