/**************************************************************************** Copyright (c) 2010 cocos2d-x.org http://www.cocos2d-x.org Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ****************************************************************************/ #include "CCImage.h" #include "CCCommon.h" #include "CCStdC.h" #include "png.h" #include #define QGLOBAL_H // defined for wophone #include "jpeglib.h" #undef QGLOBAL_H #define CC_RGB_PREMULTIPLY_APLHA(vr, vg, vb, va) \ (unsigned)(((unsigned)((unsigned char)(vr) * ((unsigned char)(va) + 1)) >> 8) | \ ((unsigned)((unsigned char)(vg) * ((unsigned char)(va) + 1) >> 8) << 8) | \ ((unsigned)((unsigned char)(vb) * ((unsigned char)(va) + 1) >> 8) << 16) | \ ((unsigned)(unsigned char)(va) << 24)) typedef struct { unsigned char* data; int size; int offset; }tImageSource; static void pngReadCallback(png_structp png_ptr, png_bytep data, png_size_t length) { tImageSource* isource = (tImageSource*)png_get_io_ptr(png_ptr); if((int)(isource->offset + length) <= isource->size) { memcpy(data, isource->data+isource->offset, length); isource->offset += length; } else { png_error(png_ptr, "pngReaderCallback failed"); } } NS_CC_BEGIN; static void CCMessageBox(const std::string& msg, const std::string& title); ////////////////////////////////////////////////////////////////////////// // Impliment CCImage ////////////////////////////////////////////////////////////////////////// CCImage::CCImage() : m_nWidth(0) , m_nHeight(0) , m_nBitsPerComponent(0) , m_pData(0) , m_bHasAlpha(false) , m_bPreMulti(false) { } CCImage::~CCImage() { CC_SAFE_DELETE_ARRAY(m_pData); } bool CCImage::initWithImageFile(const char * strPath, EImageFormat eImgFmt/* = eFmtPng*/) { bool bRet = false; FILE *fp = 0; unsigned char *buffer = NULL; do { // open file fp = fopen(strPath, "rb"); CC_BREAK_IF(! fp); // compute the length of file fseek(fp,0,SEEK_END); int size = ftell(fp); fseek(fp,0,SEEK_SET); // allocate enough memory to save the data of file buffer = new unsigned char[size]; CC_BREAK_IF(! buffer); // read data size = fread(buffer, sizeof(unsigned char), size, fp); if (kFmtJpg == eImgFmt) { bRet = _initWithJpgData(buffer, size); } else { bRet = _initWithPngData(buffer, size); } } while (0); CC_SAFE_DELETE_ARRAY(buffer); if (fp) { fclose(fp); } if (! bRet && CCImage::getIsPopupNotify()) { std::string title = "cocos2d-x error!"; std::string msg = "Load "; msg.append(strPath).append(" failed!"); CCMessageBox(msg, title); } return bRet; } bool CCImage::initWithImageData(void * pData, int nDataLen, EImageFormat eFmt/* = eSrcFmtPng*/) { bool bRet = false; do { CC_BREAK_IF(! pData || nDataLen <= 0); if (kFmtPng == eFmt) { bRet = _initWithPngData(pData, nDataLen); break; } else if (kFmtJpg == eFmt) { bRet = _initWithJpgData(pData, nDataLen); break; } } while (0); return bRet; } static bool s_bPopupNotify = true; void CCImage::setIsPopupNotify(bool bNotify) { s_bPopupNotify = bNotify; } bool CCImage::getIsPopupNotify() { return s_bPopupNotify; } bool CCImage::_initWithJpgData(void * data, int nSize) { /* these are standard libjpeg structures for reading(decompression) */ struct jpeg_decompress_struct cinfo; struct jpeg_error_mgr jerr; /* libjpeg data structure for storing one row, that is, scanline of an image */ JSAMPROW row_pointer[1] = {0}; unsigned long location = 0; unsigned int i = 0; bool bRet = false; do { /* here we set up the standard libjpeg error handler */ cinfo.err = jpeg_std_error( &jerr ); /* setup decompression process and source, then read JPEG header */ jpeg_create_decompress( &cinfo ); /* this makes the library read from infile */ jpeg_mem_src( &cinfo, (unsigned char *) data, nSize ); /* reading the image header which contains image information */ jpeg_read_header( &cinfo, true ); // we only support RGB or grayscale if (cinfo.jpeg_color_space != JCS_RGB) { if (cinfo.jpeg_color_space == JCS_GRAYSCALE || cinfo.jpeg_color_space == JCS_YCbCr) { cinfo.out_color_space = JCS_RGB; } } else { break; } /* Start decompression jpeg here */ jpeg_start_decompress( &cinfo ); /* init image info */ m_nWidth = cinfo.image_width; m_nHeight = cinfo.image_height; m_bHasAlpha = false; m_bPreMulti = false; m_nBitsPerComponent = 8; row_pointer[0] = new unsigned char[cinfo.output_width*cinfo.output_components]; CC_BREAK_IF(! row_pointer[0]); m_pData = new unsigned char[cinfo.output_width*cinfo.output_height*cinfo.output_components]; CC_BREAK_IF(! m_pData); /* now actually read the jpeg into the raw buffer */ /* read one scan line at a time */ while( cinfo.output_scanline < cinfo.image_height ) { jpeg_read_scanlines( &cinfo, row_pointer, 1 ); for( i=0; icolor_type & PNG_COLOR_MASK_ALPHA ) ? true : false; // allocate memory and read data int bytesPerComponent = 3; if (m_bHasAlpha) { bytesPerComponent = 4; } pImateData = new unsigned char[nHeight * nWidth * bytesPerComponent]; CC_BREAK_IF(! pImateData); png_bytep * rowPointers = png_get_rows(png_ptr, info_ptr); // copy data to image info int bytesPerRow = nWidth * bytesPerComponent; if(m_bHasAlpha) { unsigned int *tmp = (unsigned int *)pImateData; for(unsigned int i = 0; i < nHeight; i++) { for(int j = 0; j < bytesPerRow; j += 4) { *tmp++ = CC_RGB_PREMULTIPLY_APLHA( rowPointers[i][j], rowPointers[i][j + 1], rowPointers[i][j + 2], rowPointers[i][j + 3] ); } } } else { for (unsigned int j = 0; j < nHeight; ++j) { memcpy(pImateData + j * bytesPerRow, rowPointers[j], bytesPerRow); } } m_nBitsPerComponent = nBitsPerComponent; m_nHeight = (short)nHeight; m_nWidth = (short)nWidth; m_pData = pImateData; pImateData = 0; bRet = true; } while (0); CC_SAFE_DELETE_ARRAY(pImateData); if (png_ptr) { png_destroy_read_struct(&png_ptr, (info_ptr) ? &info_ptr : 0, 0); } return bRet; } NS_CC_END; #if (CC_TARGET_PLATFORM == CC_PLATFORM_WIN32) #include "win32/CCImage_win32.cpp" #endif #if (CC_TARGET_PLATFORM == CC_PLATFORM_WOPHONE) #include "wophone/CCImage_wophone.cpp" #endif #if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID) #include "android/CCImage_android.cpp" #endif