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/*
* Copyright 2011, The Android Open Source Project
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``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.
*/
#define LOG_TAG "ImagesManager"
#define LOG_NDEBUG 1
#include "config.h"
#include "ImagesManager.h"
#include "AndroidLog.h"
#include "SkCanvas.h"
#include "SkDevice.h"
#include "SkRefCnt.h"
#include "ImageTexture.h"
namespace WebCore {
ImagesManager* ImagesManager::instance()
{
if (!gInstance)
gInstance = new ImagesManager();
return gInstance;
}
ImagesManager* ImagesManager::gInstance = 0;
ImageTexture* ImagesManager::setImage(SkBitmapRef* imgRef)
{
if (!imgRef)
return 0;
TRACE_METHOD();
SkBitmap* bitmap = &imgRef->bitmap();
ImageTexture* image = 0;
SkBitmap* img = 0;
unsigned crc = 0;
crc = ImageTexture::computeCRC(bitmap);
{
android::Mutex::Autolock lock(m_imagesLock);
if (m_images.contains(crc)) {
image = m_images.get(crc);
SkSafeRef(image);
return image;
}
}
// the image is not in the map, we add it
img = ImageTexture::convertBitmap(bitmap);
image = new ImageTexture(img, crc);
android::Mutex::Autolock lock(m_imagesLock);
m_images.set(crc, image);
return image;
}
ImageTexture* ImagesManager::retainImage(unsigned imgCRC)
{
if (!imgCRC)
return 0;
android::Mutex::Autolock lock(m_imagesLock);
ImageTexture* image = 0;
if (m_images.contains(imgCRC)) {
image = m_images.get(imgCRC);
SkSafeRef(image);
}
return image;
}
void ImagesManager::releaseImage(unsigned imgCRC)
{
if (!imgCRC)
return;
android::Mutex::Autolock lock(m_imagesLock);
if (m_images.contains(imgCRC)) {
ImageTexture* image = m_images.get(imgCRC);
// don't need to remove image from the HashMap, it will unregister
// itself by calling onImageTextureDestroy().
SkSafeUnref(image);
}
}
void ImagesManager::onImageTextureDestroy(unsigned imgCRC)
{
// NOTE: all unrefs must go through releaseImage, to ensure that
// onImageTextureDestroy is called under the m_imagesLock
m_images.remove(imgCRC);
}
int ImagesManager::nbTextures()
{
android::Mutex::Autolock lock(m_imagesLock);
HashMap<unsigned, ImageTexture*>::iterator end = m_images.end();
int i = 0;
int nb = 0;
for (HashMap<unsigned, ImageTexture*>::iterator it = m_images.begin(); it != end; ++it) {
nb += it->second->nbTextures();
i++;
}
return nb;
}
bool ImagesManager::prepareTextures(GLWebViewState* state)
{
bool ret = false;
android::Mutex::Autolock lock(m_imagesLock);
HashMap<unsigned, ImageTexture*>::iterator end = m_images.end();
for (HashMap<unsigned, ImageTexture*>::iterator it = m_images.begin(); it != end; ++it) {
ret |= it->second->prepareGL(state);
}
return ret;
}
} // namespace WebCore
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