//根据现有CCSprite，变亮和变灰
CCSprite* PixelGraySprite::graylightWithCCSprite(CCSprite* oldSprite,bool isLight)
{
//CCSprite转成CCimage
CCPoint p = oldSprite->getAnchorPoint();
oldSprite->setAnchorPoint(ccp(0,0));
CCRenderTexture *outTexture = CCRenderTexture::create((int)oldSprite->getContentSize().width,(int)oldSprite->getContentSize().height);
outTexture->begin();
oldSprite->visit();
outTexture->end();
oldSprite->setAnchorPoint(p);
CCImage* finalImage = outTexture->newCCImage();
unsigned char *pData = finalImage->getData();
int iIndex = 0;
if(isLight)
{
for (int i = 0; i < finalImage->getHeight(); i ++)
{
for (int j = 0; j < finalImage->getWidth(); j ++)
{
// highlight
int iHightlightPlus = 50;
int iBPos = iIndex;
unsigned int iB = pData[iIndex];
iIndex ++;
unsigned int iG = pData[iIndex];
iIndex ++;
unsigned int iR = pData[iIndex];
iIndex ++;
//unsigned int o = pData[iIndex];
iIndex ++; //原来的示例缺少
iB = (iB + iHightlightPlus > 255 ? 255 : iB + iHightlightPlus);
iG = (iG + iHightlightPlus > 255 ? 255 : iG + iHightlightPlus);
iR = (iR + iHightlightPlus > 255 ? 255 : iR + iHightlightPlus);
// iR = (iR < 0 ? 0 : iR);
// iG = (iG < 0 ? 0 : iG);
// iB = (iB < 0 ? 0 : iB);
pData[iBPos] = (unsigned char)iB;
pData[iBPos + 1] = (unsigned char)iG;
pData[iBPos + 2] = (unsigned char)iR;
}
}
}else{
for (int i = 0; i < finalImage->getHeight(); i ++)
{
for (int j = 0; j < finalImage->getWidth(); j ++)
{
// gray
int iBPos = iIndex;
unsigned int iB = pData[iIndex];
iIndex ++;
unsigned int iG = pData[iIndex];
iIndex ++;
unsigned int iR = pData[iIndex];
iIndex ++;
//unsigned int o = pData[iIndex];
iIndex ++; //原来的示例缺少
unsigned int iGray = 0.3 * iR + 0.4 * iG + 0.2 * iB;
pData[iBPos] = pData[iBPos + 1] = pData[iBPos + 2] = (unsigned char)iGray;
}
}
}
CCTexture2D *texture = new CCTexture2D;
texture->initWithImage(finalImage);
CCSprite* newSprite = CCSprite::createWithTexture(texture);
delete finalImage;
texture->release();
return newSprite;
}
static void* loadImage(void* data)
{
AsyncStruct *pAsyncStruct = NULL;
while (true)
{
// create autorelease pool for iOS
CCThread thread;
thread.createAutoreleasePool();
// wait for rendering thread to ask for loading if s_pAsyncStructQueue is empty
int semWaitRet = sem_wait(s_pSem);
if( semWaitRet < 0 )
{
CCLOG( "CCTextureCache async thread semaphore error: %s\n", strerror( errno ) );
break;
}
std::queue<AsyncStruct*>* pQueue = s_pAsyncStructQueue;
pthread_mutex_lock(&s_asyncStructQueueMutex);// get async struct from queue
if (pQueue->empty())
{
pthread_mutex_unlock(&s_asyncStructQueueMutex);
if (need_quit)
break;
else
continue;
}
else
{
pAsyncStruct = pQueue->front();
pQueue->pop();
pthread_mutex_unlock(&s_asyncStructQueueMutex);
}
const char* filename = pAsyncStruct->filename.c_str();
// compute image type
CCImage::EImageFormat imageType = CCImage::computeImageFormatType(pAsyncStruct->filename);
if (imageType == CCImage::kFmtUnKnown)
{
CCLOG("unsupported format %s",filename);
delete pAsyncStruct;
continue;
}
// generate image
CCImage* pImage = pAsyncStruct->image;
if (pImage && !pImage->initWithImageFileThreadSafe(filename, imageType))
{
pAsyncStruct->image = NULL;
CC_SAFE_RELEASE(pImage);
CCLOG("can not load %s", filename);
continue;
}
unsigned char* tempData = CCImage::convertToRequiredFormat(pImage);
if (tempData != pImage->getData())
{
CCSize size = CCSizeMake(pImage->getWidth(), pImage->getHeight());
size_t bpp = pImage->getBitsPerComponent();
CCTexture2DPixelFormat pixelFormat = pImage->hasAlpha() ? CCTexture2D::getDefaultAlphaPixelFormat() : (bpp >= 8 ? kCCTexture2DPixelFormat_RGB888 : kCCTexture2DPixelFormat_RGB565);
pAsyncStruct->image = NULL;
CC_SAFE_RELEASE(pImage);
pAsyncStruct->data = tempData;
pAsyncStruct->size = size;
pAsyncStruct->pixelFormat = pixelFormat;
}
// generate image info
ImageInfo* pImageInfo = new ImageInfo();
pImageInfo->asyncStruct = pAsyncStruct;
pImageInfo->imageType = imageType;
// put the image info into the queue
pthread_mutex_lock(&s_ImageInfoMutex);
s_pImageQueue->push(pImageInfo);
pthread_mutex_unlock(&s_ImageInfoMutex);
}
if( s_pSem != NULL )
{
#if CC_ASYNC_TEXTURE_CACHE_USE_NAMED_SEMAPHORE
sem_unlink(CC_ASYNC_TEXTURE_CACHE_SEMAPHORE);
sem_close(s_pSem);
#else
sem_destroy(s_pSem);
#endif
s_pSem = NULL;
delete s_pAsyncStructQueue;
delete s_pImageQueue;
}
return 0;
}
