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/*
* Copyright 2010, 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.
*/
#include "config.h"
#include "BackedDoubleBufferedTexture.h"
#include "BaseTile.h"
#include "ClassTracker.h"
#include "DeleteTextureOperation.h"
#include "GLUtils.h"
#include "TilesManager.h"
#define LOG_NDEBUG 1
#define LOG_TAG "BackedDoubleBufferedTexture.cpp"
#include <utils/Log.h>
namespace WebCore {
BackedDoubleBufferedTexture::BackedDoubleBufferedTexture(uint32_t w, uint32_t h,
SkBitmap* bitmap,
SkBitmap::Config config)
: DoubleBufferedTexture(eglGetCurrentContext())
, m_usedLevel(-1)
, m_config(config)
, m_owner(0)
, m_busy(false)
{
m_size.set(w, h);
if (bitmap) {
m_bitmap = bitmap;
m_sharedBitmap = true;
m_canvas = new SkCanvas(*m_bitmap);
} else {
m_bitmap = 0;
m_sharedBitmap = false;
m_canvas = 0;
}
#ifdef DEBUG_COUNT
ClassTracker::instance()->increment("BackedDoubleBufferedTexture");
#endif
}
SkCanvas* BackedDoubleBufferedTexture::canvas()
{
if (!m_bitmap && !m_sharedBitmap) {
m_bitmap = new SkBitmap();
m_bitmap->setConfig(m_config, m_size.width(), m_size.height());
m_bitmap->allocPixels();
m_bitmap->eraseColor(0);
m_canvas = new SkCanvas(*m_bitmap);
}
return m_canvas;
}
BackedDoubleBufferedTexture::~BackedDoubleBufferedTexture()
{
if (!m_sharedBitmap)
delete m_bitmap;
delete m_canvas;
SharedTexture* textures[3] = { &m_textureA, &m_textureB, 0 };
destroyTextures(textures);
#ifdef DEBUG_COUNT
ClassTracker::instance()->decrement("BackedDoubleBufferedTexture");
#endif
}
void BackedDoubleBufferedTexture::destroyTextures(SharedTexture** textures)
{
int x = 0;
while (textures[x]) {
// We need to delete the source texture and EGLImage in the texture
// generation thread. In theory we should be able to delete the EGLImage
// from either thread, but it currently throws an error if not deleted
// in the same EGLContext from which it was created.
textures[x]->lock();
DeleteTextureOperation* operation = new DeleteTextureOperation(
textures[x]->getSourceTextureId(), textures[x]->getEGLImage());
textures[x]->unlock();
TilesManager::instance()->scheduleOperation(operation);
x++;
}
}
TextureInfo* BackedDoubleBufferedTexture::producerLock()
{
m_busyLock.lock();
m_busy = true;
m_busyLock.unlock();
return DoubleBufferedTexture::producerLock();
}
void BackedDoubleBufferedTexture::producerRelease()
{
DoubleBufferedTexture::producerRelease();
android::Mutex::Autolock lock(m_busyLock);
m_busy = false;
}
void BackedDoubleBufferedTexture::producerReleaseAndSwap()
{
DoubleBufferedTexture::producerReleaseAndSwap();
android::Mutex::Autolock lock(m_busyLock);
m_busy = false;
}
bool BackedDoubleBufferedTexture::busy()
{
android::Mutex::Autolock lock(m_busyLock);
return m_busy;
}
void BackedDoubleBufferedTexture::producerUpdate(TextureInfo* textureInfo)
{
if (!m_bitmap)
return;
// no need to upload a texture since the bitmap is empty
if (!m_bitmap->width() && !m_bitmap->height()) {
producerRelease();
return;
}
if (textureInfo->m_width == m_bitmap->width() && textureInfo->m_height == m_bitmap->height())
GLUtils::updateTextureWithBitmap(textureInfo->m_textureId, *m_bitmap);
else {
GLUtils::createTextureWithBitmap(textureInfo->m_textureId, *m_bitmap);
textureInfo->m_width = m_bitmap->width();
textureInfo->m_height = m_bitmap->height();
}
if (!m_sharedBitmap) {
delete m_bitmap;
delete m_canvas;
m_bitmap = 0;
m_canvas = 0;
}
producerReleaseAndSwap();
}
bool BackedDoubleBufferedTexture::acquire(TextureOwner* owner)
{
if (m_owner == owner)
return true;
return setOwner(owner);
}
bool BackedDoubleBufferedTexture::setOwner(TextureOwner* owner)
{
// if the writable texture is busy (i.e. currently being written to) then we
// can't change the owner out from underneath that texture
android::Mutex::Autolock lock(m_busyLock);
if (!m_busy) {
if (m_owner && m_owner != owner)
m_owner->removeTexture(this);
m_owner = owner;
owner->addOwned(this);
return true;
}
return false;
}
void BackedDoubleBufferedTexture::release(TextureOwner* owner)
{
if (m_owner == owner) {
m_owner->removeOwned(this);
m_owner = 0;
}
}
} // namespace WebCore
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