Lothario
/
axmol
mirror of https://github.com/axmolengine/axmol.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
axmol/cocos2dx/platform/CCImageCommon_cpp.h

862 lines
25 KiB
C++
Raw Blame History

/****************************************************************************
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.
****************************************************************************/
#ifndef __CC_PLATFORM_IMAGE_CPP__
#error "CCFileUtilsCommon_cpp.h can only be included for CCFileUtils.cpp in platform/win32(android,...)"
#endif /* __CC_PLATFORM_IMAGE_CPP__ */
#include "CCImage.h"
#include "CCCommon.h"
#include "CCStdC.h"
#include "CCFileUtils.h"
#include "png.h"
#include "jpeglib.h"
#include "tiffio.h"
#include <string>
#include <ctype.h>
#if (CC_TARGET_PLATFORM != CC_PLATFORM_IOS && CC_TARGET_PLATFORM != CC_PLATFORM_MAC)
NS_CC_BEGIN
// premultiply alpha, or the effect will wrong when want to use other pixel format in CCTexture2D,
// such as RGB888, RGB5A1
#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))
// on ios, we should use platform/ios/CCImage_ios.mm instead
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");
}
}
//////////////////////////////////////////////////////////////////////////
// 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;
unsigned long nSize = 0;
unsigned char* pBuffer = CCFileUtils::sharedFileUtils()->getFileData(CCFileUtils::sharedFileUtils()->fullPathFromRelativePath(strPath), "rb", &nSize);
if (pBuffer != NULL && nSize > 0)
{
bRet = initWithImageData(pBuffer, nSize, eImgFmt);
}
CC_SAFE_DELETE_ARRAY(pBuffer);
return bRet;
}
bool CCImage::initWithImageFileThreadSafe(const char *fullpath, EImageFormat imageType)
{
bool bRet = false;
unsigned long nSize = 0;
unsigned char *pBuffer = CCFileUtils::sharedFileUtils()->getFileData(fullpath, "rb", &nSize);
if (pBuffer != NULL && nSize > 0)
{
bRet = initWithImageData(pBuffer, nSize, imageType);
}
CC_SAFE_DELETE_ARRAY(pBuffer);
return bRet;
}
bool CCImage::initWithImageData(void * pData,
int nDataLen,
EImageFormat eFmt/* = eSrcFmtPng*/,
int nWidth/* = 0*/,
int nHeight/* = 0*/,
int nBitsPerComponent/* = 8*/)
{
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;
}
else if (kFmtTiff == eFmt)
{
bRet = _initWithTiffData(pData, nDataLen);
break;
}
else if (kFmtRawData == eFmt)
{
bRet = _initWithRawData(pData, nDataLen, nWidth, nHeight, nBitsPerComponent);
break;
}
else
{
// if it is a png file buffer.
if (nDataLen > 8)
{
unsigned char* pHead = (unsigned char*)pData;
if ( pHead[0] == 0x89
&& pHead[1] == 0x50
&& pHead[2] == 0x4E
&& pHead[3] == 0x47
&& pHead[4] == 0x0D
&& pHead[5] == 0x0A
&& pHead[6] == 0x1A
&& pHead[7] == 0x0A)
{
bRet = _initWithPngData(pData, nDataLen);
break;
}
}
// if it is a tiff file buffer.
if (nDataLen > 2)
{
unsigned char* pHead = (unsigned char*)pData;
if ( (pHead[0] == 0x49 && pHead[1] == 0x49)
|| (pHead[0] == 0x4d && pHead[1] == 0x4d)
)
{
bRet = _initWithTiffData(pData, nDataLen);
break;
}
}
// if it is a jpeg file buffer.
if (nDataLen > 2)
{
unsigned char* pHead = (unsigned char*)pData;
if ( pHead[0] == 0xff
&& pHead[1] == 0xd8)
{
bRet = _initWithJpgData(pData, nDataLen);
break;
}
}
}
} while (0);
return bRet;
}
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 );
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 = (short)(cinfo.image_width);
m_nHeight = (short)(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; i<cinfo.image_width*cinfo.output_components;i++)
{
m_pData[location++] = row_pointer[0][i];
}
}
jpeg_finish_decompress( &cinfo );
jpeg_destroy_decompress( &cinfo );
/* wrap up decompression, destroy objects, free pointers and close open files */
bRet = true;
} while (0);
CC_SAFE_DELETE_ARRAY(row_pointer[0]);
return bRet;
}
bool CCImage::_initWithPngData(void * pData, int nDatalen)
{
// length of bytes to check if it is a valid png file
#define PNGSIGSIZE 8
bool bRet = false;
png_byte header[PNGSIGSIZE] = {0};
png_structp png_ptr = 0;
png_infop info_ptr = 0;
do
{
// png header len is 8 bytes
CC_BREAK_IF(nDatalen < PNGSIGSIZE);
// check the data is png or not
memcpy(header, pData, PNGSIGSIZE);
CC_BREAK_IF(png_sig_cmp(header, 0, PNGSIGSIZE));
// init png_struct
png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
CC_BREAK_IF(! png_ptr);
// init png_info
info_ptr = png_create_info_struct(png_ptr);
CC_BREAK_IF(!info_ptr);
#if (CC_TARGET_PLATFORM != CC_PLATFORM_BADA)
CC_BREAK_IF(setjmp(png_jmpbuf(png_ptr)));
#endif
// set the read call back function
tImageSource imageSource;
imageSource.data = (unsigned char*)pData;
imageSource.size = nDatalen;
imageSource.offset = 0;
png_set_read_fn(png_ptr, &imageSource, pngReadCallback);
// read png header info
// read png file info
png_read_info(png_ptr, info_ptr);
m_nWidth = png_get_image_width(png_ptr, info_ptr);
m_nHeight = png_get_image_height(png_ptr, info_ptr);
m_nBitsPerComponent = png_get_bit_depth(png_ptr, info_ptr);
png_uint_32 color_type = png_get_color_type(png_ptr, info_ptr);
CCLOG("color type %u", color_type);
// force palette images to be expanded to 24-bit RGB
// it may include alpha channel
if (color_type == PNG_COLOR_TYPE_PALETTE)
{
png_set_palette_to_rgb(png_ptr);
}
// low-bit-depth grayscale iamges are to be expanded to 8 bits
if (color_type == PNG_COLOR_TYPE_GRAY && m_nBitsPerComponent < 8)
{
png_set_expand_gray_1_2_4_to_8(png_ptr);
}
// expand any tRNS chunk data into a full alpha channel
if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))
{
png_set_tRNS_to_alpha(png_ptr);
}
// reduce images with 16-bit samples to 8 bits
if (m_nBitsPerComponent == 16)
{
png_set_strip_16(png_ptr);
}
// expand grayscale images to RGB
if (color_type == PNG_COLOR_TYPE_GRAY || color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
{
png_set_gray_to_rgb(png_ptr);
}
// read png data
// m_nBitsPerComponent will always be 8
m_nBitsPerComponent = 8;
png_uint_32 rowbytes;
png_bytep* row_pointers = (png_bytep*)malloc( sizeof(png_bytep) * m_nHeight );
png_read_update_info(png_ptr, info_ptr);
rowbytes = png_get_rowbytes(png_ptr, info_ptr);
m_pData = new unsigned char[rowbytes * m_nHeight];
CC_BREAK_IF(!m_pData);
for (unsigned short i = 0; i < m_nHeight; ++i)
{
row_pointers[i] = m_pData + i*rowbytes;
}
png_read_image(png_ptr, row_pointers);
png_read_end(png_ptr, NULL);
png_uint_32 channel = rowbytes/m_nWidth;
if (channel == 4)
{
m_bHasAlpha = true;
unsigned int *tmp = (unsigned int *)m_pData;
for(unsigned short i = 0; i < m_nHeight; i++)
{
for(unsigned int j = 0; j < rowbytes; j += 4)
{
*tmp++ = CC_RGB_PREMULTIPLY_APLHA( row_pointers[i][j], row_pointers[i][j + 1],
row_pointers[i][j + 2], row_pointers[i][j + 3] );
}
}
m_bPreMulti = true;
}
CC_SAFE_FREE(row_pointers);
bRet = true;
} while (0);
if (png_ptr)
{
png_destroy_read_struct(&png_ptr, (info_ptr) ? &info_ptr : 0, 0);
}
return bRet;
}
static tmsize_t _tiffReadProc(thandle_t fd, void* buf, tmsize_t size)
{
tImageSource* isource = (tImageSource*)fd;
uint8* ma;
uint64 mb;
unsigned long n;
unsigned long o;
tmsize_t p;
ma=(uint8*)buf;
mb=size;
p=0;
while (mb>0)
{
n=0x80000000UL;
if ((uint64)n>mb)
n=(unsigned long)mb;
if((int)(isource->offset + n) <= isource->size)
{
memcpy(ma, isource->data+isource->offset, n);
isource->offset += n;
o = n;
}
else
{
return 0;
}
ma+=o;
mb-=o;
p+=o;
if (o!=n)
{
break;
}
}
return p;
}
static tmsize_t _tiffWriteProc(thandle_t fd, void* buf, tmsize_t size)
{
CC_UNUSED_PARAM(fd);
CC_UNUSED_PARAM(buf);
CC_UNUSED_PARAM(size);
return 0;
}
static uint64 _tiffSeekProc(thandle_t fd, uint64 off, int whence)
{
tImageSource* isource = (tImageSource*)fd;
uint64 ret = -1;
do
{
if (whence == SEEK_SET)
{
CC_BREAK_IF(off > isource->size-1);
ret = isource->offset = (uint32)off;
}
else if (whence == SEEK_CUR)
{
CC_BREAK_IF(isource->offset + off > isource->size-1);
ret = isource->offset += (uint32)off;
}
else if (whence == SEEK_END)
{
CC_BREAK_IF(off > isource->size-1);
ret = isource->offset = (uint32)(isource->size-1 - off);
}
else
{
CC_BREAK_IF(off > isource->size-1);
ret = isource->offset = (uint32)off;
}
} while (0);
return ret;
}
static uint64 _tiffSizeProc(thandle_t fd)
{
tImageSource* pImageSrc = (tImageSource*)fd;
return pImageSrc->size;
}
static int _tiffCloseProc(thandle_t fd)
{
CC_UNUSED_PARAM(fd);
return 0;
}
static int _tiffMapProc(thandle_t fd, void** pbase, toff_t* psize)
{
CC_UNUSED_PARAM(fd);
CC_UNUSED_PARAM(pbase);
CC_UNUSED_PARAM(psize);
return 0;
}
static void _tiffUnmapProc(thandle_t fd, void* base, toff_t size)
{
CC_UNUSED_PARAM(fd);
CC_UNUSED_PARAM(base);
CC_UNUSED_PARAM(size);
}
bool CCImage::_initWithTiffData(void* pData, int nDataLen)
{
bool bRet = false;
do
{
// set the read call back function
tImageSource imageSource;
imageSource.data = (unsigned char*)pData;
imageSource.size = nDataLen;
imageSource.offset = 0;
TIFF* tif = TIFFClientOpen("file.tif", "r", (thandle_t)&imageSource,
_tiffReadProc, _tiffWriteProc,
_tiffSeekProc, _tiffCloseProc, _tiffSizeProc,
_tiffMapProc,
_tiffUnmapProc);
CC_BREAK_IF(NULL == tif);
uint32 w = 0, h = 0;
uint16 bitsPerSample = 0, samplePerPixel = 0, planarConfig = 0;
size_t npixels = 0;
TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &w);
TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &h);
TIFFGetField(tif, TIFFTAG_BITSPERSAMPLE, &bitsPerSample);
TIFFGetField(tif, TIFFTAG_SAMPLESPERPIXEL, &samplePerPixel);
TIFFGetField(tif, TIFFTAG_PLANARCONFIG, &planarConfig);
npixels = w * h;
m_bHasAlpha = true;
m_nWidth = w;
m_nHeight = h;
m_nBitsPerComponent = 8;
m_pData = new unsigned char[npixels * sizeof (uint32)];
uint32* raster = (uint32*) _TIFFmalloc(npixels * sizeof (uint32));
if (raster != NULL)
{
if (TIFFReadRGBAImageOriented(tif, w, h, raster, ORIENTATION_TOPLEFT, 0))
{
unsigned char* src = (unsigned char*)raster;
unsigned int* tmp = (unsigned int*)m_pData;
/* the raster data is pre-multiplied by the alpha component
after invoking TIFFReadRGBAImageOriented
for(int j = 0; j < m_nWidth * m_nHeight * 4; j += 4)
{
*tmp++ = CC_RGB_PREMULTIPLY_APLHA( src[j], src[j + 1],
src[j + 2], src[j + 3] );
}
*/
m_bPreMulti = true;
memcpy(m_pData, raster, npixels*sizeof (uint32));
}
_TIFFfree(raster);
}
TIFFClose(tif);
bRet = true;
} while (0);
return bRet;
}
bool CCImage::_initWithRawData(void * pData, int nDatalen, int nWidth, int nHeight, int nBitsPerComponent)
{
bool bRet = false;
do
{
CC_BREAK_IF(0 == nWidth || 0 == nHeight);
m_nBitsPerComponent = nBitsPerComponent;
m_nHeight = (short)nHeight;
m_nWidth = (short)nWidth;
m_bHasAlpha = true;
// only RGBA8888 surported
int nBytesPerComponent = 4;
int nSize = nHeight * nWidth * nBytesPerComponent;
m_pData = new unsigned char[nSize];
CC_BREAK_IF(! m_pData);
memcpy(m_pData, pData, nSize);
bRet = true;
} while (0);
return bRet;
}
bool CCImage::saveToFile(const char *pszFilePath, bool bIsToRGB)
{
bool bRet = false;
do
{
CC_BREAK_IF(NULL == pszFilePath);
std::string strFilePath(pszFilePath);
CC_BREAK_IF(strFilePath.size() <= 4);
std::string strLowerCasePath(strFilePath);
for (unsigned int i = 0; i < strLowerCasePath.length(); ++i)
{
strLowerCasePath[i] = tolower(strFilePath[i]);
}
if (std::string::npos != strLowerCasePath.find(".png"))
{
CC_BREAK_IF(!_saveImageToPNG(pszFilePath, bIsToRGB));
}
else if (std::string::npos != strLowerCasePath.find(".jpg"))
{
CC_BREAK_IF(!_saveImageToJPG(pszFilePath));
}
else
{
break;
}
bRet = true;
} while (0);
return bRet;
}
bool CCImage::_saveImageToPNG(const char * pszFilePath, bool bIsToRGB)
{
bool bRet = false;
do
{
CC_BREAK_IF(NULL == pszFilePath);
FILE *fp;
png_structp png_ptr;
png_infop info_ptr;
png_colorp palette;
png_bytep *row_pointers;
fp = fopen(pszFilePath, "wb");
CC_BREAK_IF(NULL == fp);
png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (NULL == png_ptr)
{
fclose(fp);
break;
}
info_ptr = png_create_info_struct(png_ptr);
if (NULL == info_ptr)
{
fclose(fp);
png_destroy_write_struct(&png_ptr, NULL);
break;
}
#if (CC_TARGET_PLATFORM != CC_PLATFORM_BADA)
if (setjmp(png_jmpbuf(png_ptr)))
{
fclose(fp);
png_destroy_write_struct(&png_ptr, &info_ptr);
break;
}
#endif
png_init_io(png_ptr, fp);
if (!bIsToRGB && m_bHasAlpha)
{
png_set_IHDR(png_ptr, info_ptr, m_nWidth, m_nHeight, 8, PNG_COLOR_TYPE_RGB_ALPHA,
PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
}
else
{
png_set_IHDR(png_ptr, info_ptr, m_nWidth, m_nHeight, 8, PNG_COLOR_TYPE_RGB,
PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
}
palette = (png_colorp)png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH * sizeof (png_color));
png_set_PLTE(png_ptr, info_ptr, palette, PNG_MAX_PALETTE_LENGTH);
png_write_info(png_ptr, info_ptr);
png_set_packing(png_ptr);
row_pointers = (png_bytep *)malloc(m_nHeight * sizeof(png_bytep));
if(row_pointers == NULL)
{
fclose(fp);
png_destroy_write_struct(&png_ptr, &info_ptr);
break;
}
if (!m_bHasAlpha)
{
for (int i = 0; i < (int)m_nHeight; i++)
{
row_pointers[i] = (png_bytep)m_pData + i * m_nWidth * 3;
}
png_write_image(png_ptr, row_pointers);
free(row_pointers);
row_pointers = NULL;
}
else
{
if (bIsToRGB)
{
unsigned char *pTempData = new unsigned char[m_nWidth * m_nHeight * 3];
if (NULL == pTempData)
{
fclose(fp);
png_destroy_write_struct(&png_ptr, &info_ptr);
break;
}
for (int i = 0; i < m_nHeight; ++i)
{
for (int j = 0; j < m_nWidth; ++j)
{
pTempData[(i * m_nWidth + j) * 3] = m_pData[(i * m_nWidth + j) * 4];
pTempData[(i * m_nWidth + j) * 3 + 1] = m_pData[(i * m_nWidth + j) * 4 + 1];
pTempData[(i * m_nWidth + j) * 3 + 2] = m_pData[(i * m_nWidth + j) * 4 + 2];
}
}
for (int i = 0; i < (int)m_nHeight; i++)
{
row_pointers[i] = (png_bytep)pTempData + i * m_nWidth * 3;
}
png_write_image(png_ptr, row_pointers);
free(row_pointers);
row_pointers = NULL;
CC_SAFE_DELETE_ARRAY(pTempData);
}
else
{
for (int i = 0; i < (int)m_nHeight; i++)
{
row_pointers[i] = (png_bytep)m_pData + i * m_nWidth * 4;
}
png_write_image(png_ptr, row_pointers);
free(row_pointers);
row_pointers = NULL;
}
}
png_write_end(png_ptr, info_ptr);
png_free(png_ptr, palette);
palette = NULL;
png_destroy_write_struct(&png_ptr, &info_ptr);
fclose(fp);
bRet = true;
} while (0);
return bRet;
}
bool CCImage::_saveImageToJPG(const char * pszFilePath)
{
bool bRet = false;
do
{
CC_BREAK_IF(NULL == pszFilePath);
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
FILE * outfile; /* target file */
JSAMPROW row_pointer[1]; /* pointer to JSAMPLE row[s] */
int row_stride; /* physical row width in image buffer */
cinfo.err = jpeg_std_error(&jerr);
/* Now we can initialize the JPEG compression object. */
jpeg_create_compress(&cinfo);
CC_BREAK_IF((outfile = fopen(pszFilePath, "wb")) == NULL);
jpeg_stdio_dest(&cinfo, outfile);
cinfo.image_width = m_nWidth; /* image width and height, in pixels */
cinfo.image_height = m_nHeight;
cinfo.input_components = 3; /* # of color components per pixel */
cinfo.in_color_space = JCS_RGB; /* colorspace of input image */
jpeg_set_defaults(&cinfo);
jpeg_start_compress(&cinfo, TRUE);
row_stride = m_nWidth * 3; /* JSAMPLEs per row in image_buffer */
if (m_bHasAlpha)
{
unsigned char *pTempData = new unsigned char[m_nWidth * m_nHeight * 3];
if (NULL == pTempData)
{
jpeg_finish_compress(&cinfo);
jpeg_destroy_compress(&cinfo);
fclose(outfile);
break;
}
for (int i = 0; i < m_nHeight; ++i)
{
for (int j = 0; j < m_nWidth; ++j)
{
pTempData[(i * m_nWidth + j) * 3] = m_pData[(i * m_nWidth + j) * 4];
pTempData[(i * m_nWidth + j) * 3 + 1] = m_pData[(i * m_nWidth + j) * 4 + 1];
pTempData[(i * m_nWidth + j) * 3 + 2] = m_pData[(i * m_nWidth + j) * 4 + 2];
}
}
while (cinfo.next_scanline < cinfo.image_height) {
row_pointer[0] = & pTempData[cinfo.next_scanline * row_stride];
(void) jpeg_write_scanlines(&cinfo, row_pointer, 1);
}
CC_SAFE_DELETE_ARRAY(pTempData);
}
else
{
while (cinfo.next_scanline < cinfo.image_height) {
row_pointer[0] = & m_pData[cinfo.next_scanline * row_stride];
(void) jpeg_write_scanlines(&cinfo, row_pointer, 1);
}
}
jpeg_finish_compress(&cinfo);
fclose(outfile);
jpeg_destroy_compress(&cinfo);
bRet = true;
} while (0);
return bRet;
}
NS_CC_END
#endif // (CC_TARGET_PLATFORM != TARGET_OS_IPHONE && CC_TARGET_PLATFORM != CC_PLATFORM_MAC)
/* ios/CCImage_ios.mm uses "mm" as the extension,
so we cannot inclue it in this CCImage.cpp.
It makes a little difference on ios */
Reference in New Issue View Git Blame Copy Permalink