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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
#if PLATFORM(QT)
#include "BitmapTextureImageBuffer.h"
#endif
namespace WebCore {
static const double s_releaseUnusedSecondsTolerance = 3;
static const double s_releaseUnusedTexturesTimerInterval = 0.5;
#if PLATFORM(QT)
BitmapTexturePool::BitmapTexturePool()
: m_releaseUnusedTexturesTimer(*this, &BitmapTexturePool::releaseUnusedTexturesTimerFired)
{
}
#endif
#if USE(TEXTURE_MAPPER_GL)
BitmapTexturePool::BitmapTexturePool(RefPtr<GraphicsContext3D>&& context3D)
: m_context3D(WTFMove(context3D))
, m_releaseUnusedTexturesTimer(*this, &BitmapTexturePool::releaseUnusedTexturesTimerFired)
{
}
#endif
RefPtr<BitmapTexture> BitmapTexturePool::acquireTexture(const IntSize& size, const BitmapTexture::Flags flags)
{
Vector<Entry>& list = flags & BitmapTexture::FBOAttachment ? m_attachmentTextures : m_textures;
Entry* selectedEntry = std::find_if(list.begin(), list.end(),
[&size](Entry& entry) { return entry.m_texture->refCount() == 1 && entry.m_texture->size() == size; });
if (selectedEntry == list.end()) {
list.append(Entry(createTexture(flags)));
selectedEntry = &list.last();
}
scheduleReleaseUnusedTextures();
selectedEntry->markIsInUse();
return selectedEntry->m_texture.copyRef();
}
void BitmapTexturePool::scheduleReleaseUnusedTextures()
{
if (m_releaseUnusedTexturesTimer.isActive())
return;
m_releaseUnusedTexturesTimer.startOneShot(s_releaseUnusedTexturesTimerInterval);
}
void BitmapTexturePool::releaseUnusedTexturesTimerFired()
{
// Delete entries, which have been unused in s_releaseUnusedSecondsTolerance.
double minUsedTime = monotonicallyIncreasingTime() - s_releaseUnusedSecondsTolerance;
if (!m_textures.isEmpty()) {
std::sort(m_textures.begin(), m_textures.end(),
[](const Entry& a, const Entry& b) { return a.m_lastUsedTime > b.m_lastUsedTime; });
for (size_t i = 0; i < m_textures.size(); ++i) {
if (m_textures[i].m_lastUsedTime < minUsedTime) {
m_textures.remove(i, m_textures.size() - i);
break;
}
}
}
if (!m_attachmentTextures.isEmpty()) {
std::sort(m_attachmentTextures.begin(), m_attachmentTextures.end(),
[](const Entry& a, const Entry& b) { return a.m_lastUsedTime > b.m_lastUsedTime; });
for (size_t i = 0; i < m_attachmentTextures.size(); ++i) {
if (m_attachmentTextures[i].m_lastUsedTime < minUsedTime) {
m_attachmentTextures.remove(i, m_attachmentTextures.size() - i);
break;
}
}
}
if (!m_textures.isEmpty() || !m_attachmentTextures.isEmpty())
scheduleReleaseUnusedTextures();
}
RefPtr<BitmapTexture> BitmapTexturePool::createTexture(const BitmapTexture::Flags flags)
{
#if PLATFORM(QT) && USE(TEXTURE_MAPPER_GL)
if (!m_context3D)
return BitmapTextureImageBuffer::create();
#endif
#if USE(TEXTURE_MAPPER_GL)
return adoptRef(new BitmapTextureGL(m_context3D, flags));
#else
return BitmapTextureImageBuffer::create();
#endif
}
} // namespace WebCore
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