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axmol/cocos2dx/platform/marmalade/CCImage.cpp

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/****************************************************************************
Copyright (c) 2011 cocos2d-x.org http://cocos2d-x.org
Copyright (c) 2011 Максим Аксенов
Copyright (c) 2011 Giovanni Zito, Francis Styck
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 <vector>
#include <string>
#include <sstream>
#include <algorithm>
#include "CCImage.h"
#include "CCCommon.h"
#include "CCStdC.h"
#include "CCFileUtils.h"
#include "s3eFile.h"
#include "IwUtil.h"
#include "png.h"
#include "ft2build.h"
#include "tiffio.h"
#include FT_FREETYPE_H
#define FONT_KERNING 2
#define RSHIFT6(num) ((num)>>6)
#include <strings.h>
extern "C"
{
#include <jpeglib.h>
}
//#include <string>
typedef struct
{
unsigned char* data;
int size;
int offset;
} tImageSource;
struct TextLine {
std::string sLineStr;
int iLineWidth;
};
NS_CC_BEGIN;
class CC_DLL CCImageHelper
{
public:
CCImageHelper();
~CCImageHelper();
// dummy funcs to help libjpeg
static void JPEGInitSource(j_decompress_ptr cinfo)
{
}
static boolean JPEGFillInputBuffer(j_decompress_ptr cinfo)
{
return 0;
}
static void JPEGSkipInputData(j_decompress_ptr cinfo, long num_bytes)
{
cinfo->src->next_input_byte += num_bytes;
cinfo->src->bytes_in_buffer -= num_bytes;
}
static void JPEGTermSource(j_decompress_ptr cinfo)
{
}
};
class BitmapDC
{
public:
BitmapDC();
~BitmapDC();
void reset();
bool getBitmap(const char *text, int nWidth, int nHeight, CCImage::ETextAlign eAlignMask, const char * pFontName, uint fontSize);
public:
unsigned char* m_pData;
int m_iMaxLineWidth;
int m_iMaxLineHeight;
private:
void buildLine(std::stringstream& ss, FT_Face face, int iCurXCursor, char cLastChar);
bool divideString(FT_Face face, const char* sText, int iMaxWidth, int iMaxHeight);
/**
* compute the start pos of every line
* return value>0 represents the start x pos of the line, while -1 means fail
*/
int computeLineStart(FT_Face face, CCImage::ETextAlign eAlignMask, char cText, int iLineIndex);
bool startsWith(const std::string& str, const std::string& what);
bool endsWith(const std::string& str, const std::string& what);
std::string fileNameExtension(const std::string& pathName);
std::string basename(const std::string& pathName);
int openFont(const std::string& fontName, uint fontSize);
private:
FT_Library m_library;
FT_Face m_face ;
std::string m_fontName ;
uint m_fontSize ;
int m_libError;
int m_iInterval;
std::vector<TextLine> m_vLines;
};
bool BitmapDC::startsWith(const std::string& str, const std::string& what)
{
bool result = false ;
if( what.size() <= str.size() ) {
result = (str.substr( 0, what.size() ) == what) ;
}
return result ;
}
bool BitmapDC::endsWith(const std::string& str, const std::string& what)
{
bool result = false ;
if( what.size() <= str.size() ) {
result = (str.substr( str.size() - what.size() ) == what) ;
}
return result ;
}
std::string BitmapDC::fileNameExtension(const std::string& pathName)
{
std::string ext ;
std::string::size_type pos = pathName.find_last_of(".") ;
if( pos != std::string::npos && pos != pathName.size()-1 ) {
ext = pathName.substr(pos+1) ;
}
return ext ;
}
std::string BitmapDC::basename(const std::string& pathName)
{
int pos = pathName.rfind("/");
std::string bn = pathName.substr(pos + 1, pathName.length() - pos + 1);
return bn ;
}
BitmapDC::BitmapDC() :
m_face(NULL)
,m_fontName()
,m_fontSize(0)
,m_iInterval(FONT_KERNING)
,m_pData(NULL)
{
m_libError = FT_Init_FreeType( &m_library );
reset();
}
BitmapDC::~BitmapDC()
{
// free face
if( m_face ) {
FT_Done_Face(m_face);
m_face = NULL;
}
FT_Done_FreeType(m_library);
//data will be deleted by CCImage
// if (m_pData) {
// delete [] m_pData;
// }
}
void BitmapDC::reset()
{
m_iMaxLineWidth = 0;
m_iMaxLineHeight = 0;
m_vLines.clear();
}
void BitmapDC::buildLine(std::stringstream& ss, FT_Face face, int iCurXCursor, char cLastChar )
{
TextLine oTempLine;
ss << '\0';
oTempLine.sLineStr = ss.str();
//get last glyph
FT_Load_Glyph(face, FT_Get_Char_Index(face, cLastChar), FT_LOAD_DEFAULT);
oTempLine.iLineWidth =
iCurXCursor -
RSHIFT6( face->glyph->metrics.horiAdvance +
face->glyph->metrics.horiBearingX
- face->glyph->metrics.width)/*-iInterval*/; //TODO interval
m_iMaxLineWidth = MAX(m_iMaxLineWidth, oTempLine.iLineWidth);
ss.clear();
ss.str("");
m_vLines.push_back(oTempLine);
}
bool BitmapDC::divideString( FT_Face face, const char* sText, int iMaxWidth, int iMaxHeight )
{
const char* pText = sText;
int iError = 0;
int iCurXCursor;
iError = FT_Load_Glyph(face, FT_Get_Char_Index(face, *pText), FT_LOAD_DEFAULT);
if (iError) {
return false;
}
iCurXCursor = -RSHIFT6(face->glyph->metrics.horiBearingX);
//init stringstream
std::stringstream ss;
int cLastCh = 0;
while (*pText != '\0') {
if (*pText == '\n') {
buildLine(ss, face, iCurXCursor, cLastCh);
pText++;
iError = FT_Load_Glyph(face, FT_Get_Char_Index(face, *pText), FT_LOAD_DEFAULT);
if (iError) {
return false;
}
iCurXCursor = -RSHIFT6(face->glyph->metrics.horiBearingX);
continue;
}
iError = FT_Load_Glyph(face, FT_Get_Char_Index(face, *pText), FT_LOAD_DEFAULT);
if (iError) {
return false;
//break;
}
//check its width
//divide it when exceeding
if ((iMaxWidth > 0 && iCurXCursor + RSHIFT6(face->glyph->metrics.width) > iMaxWidth)) {
buildLine(ss, face , iCurXCursor, cLastCh);
iCurXCursor = -RSHIFT6(face->glyph->metrics.horiBearingX);
}
cLastCh = *pText;
ss << *pText;
iCurXCursor += RSHIFT6(face->glyph->metrics.horiAdvance) + m_iInterval;
pText++;
/*
if (cLastCh == ' ' || cLastCh == ',' || cLastCh == '.' || cLastCh == '!' || cLastCh == '?')
{
char *pText_temp = (char *)pText;
int iCurXCursor_temp = 0;
while((strlen(pText_temp) > 0) && (*pText_temp!=' ') && (*pText_temp !=',') && (*pText_temp != '.') && (*pText_temp != '!') && (*pText_temp != '?') && (*pText_temp != '/0') && (*pText_temp != '/n'))
{
iError = FT_Load_Glyph(face, FT_Get_Char_Index(face, *pText_temp), FT_LOAD_DEFAULT);
if (iError) {
return false;
//break;
}
iCurXCursor_temp += SHIFT6(face->glyph->metrics.horiAdvance) + iInterval;
if (iCurXCursor + iCurXCursor_temp > iMaxWidth && iMaxWidth > 0)
{
buildLine(ss, face , iCurXCursor, cLastCh);
iCurXCursor = -SHIFT6(face->glyph->metrics.horiBearingX);
}
pText_temp++;
}
}
*/
}
if (iError) {
return false;
}
buildLine(ss,face, iCurXCursor, cLastCh);
return true;
}
int BitmapDC::computeLineStart( FT_Face face, CCImage::ETextAlign eAlignMask, char cText, int iLineIndex )
{
int iRet;
int iError = FT_Load_Glyph(face, FT_Get_Char_Index(face, cText), FT_LOAD_DEFAULT);
if (iError) {
return -1;
}
if (eAlignMask == CCImage::kAlignCenter) {
iRet = (m_iMaxLineWidth - m_vLines[iLineIndex].iLineWidth) / 2 - RSHIFT6(face->glyph->metrics.horiBearingX );
} else if (eAlignMask == CCImage::kAlignRight) {
iRet = (m_iMaxLineWidth - m_vLines[iLineIndex].iLineWidth) - RSHIFT6(face->glyph->metrics.horiBearingX );
} else {
// left or other situation
iRet = -RSHIFT6(face->glyph->metrics.horiBearingX );
}
return iRet;
}
int BitmapDC::openFont(const std::string& fontName, uint fontSize)
{
FT_Face aFace ;
int iError = 0 ;
if( m_fontName != basename(fontName) || m_fontSize != fontSize ) {
iError = FT_New_Face( m_library, fontName.c_str(), 0, &aFace );
if( !iError ) {
if(m_face) {
FT_Done_Face(m_face);
}
m_face = aFace ;
m_fontName = basename(fontName) ;
m_fontSize = fontSize ;
}
}
return iError ;
}
bool BitmapDC::getBitmap( const char *text, int nWidth, int nHeight, CCImage::ETextAlign eAlignMask, const char * pFontName, uint fontSize )
{
FT_Error iError;
unsigned char cTemp ;
int iY, iX, iTemp ;
uint32 offset, rowOffset ;
//data will be deleted by CCImage
// if (m_pData) {
// delete m_pData;
// }
int iCurXCursor, iCurYCursor;
bool bRet = false;
if (m_libError) {
return false;
}
do {
std::string fName = pFontName ;
std::string ext = fileNameExtension(fName) ;
if( ext.empty() || (ext != "ttf" && ext != "TTF") ) {
fName += ".ttf" ;
}
if( !m_face || (m_fontName != basename(fName) || m_fontSize != fontSize) ) {
iError = openFont( fName, fontSize );
if (iError) { // try loading from "fonts" folder
if( !startsWith(fName,"fonts/") ) {
fName = std::string("fonts/") + fName ;
}
iError = openFont( fName, fontSize );
if (iError) { //no valid font found, try to use default
fName = "fonts/Marker Felt.ttf" ;
//CCLog("No valid font, use default %s", fName.c_str());
iError = openFont( fName, fontSize );
}
}
CC_BREAK_IF(iError);
//select utf8 charmap
iError = FT_Select_Charmap(m_face,FT_ENCODING_UNICODE);
CC_BREAK_IF(iError);
iError = FT_Set_Pixel_Sizes(m_face, fontSize,fontSize);
CC_BREAK_IF(iError);
}
iError = divideString(m_face, text, nWidth, nHeight) ? 0 : 1 ;
//compute the final line width
m_iMaxLineWidth = MAX(m_iMaxLineWidth, nWidth);
FT_Pos ascenderPixels = RSHIFT6(m_face->size->metrics.ascender) ;
FT_Pos descenderPixels = RSHIFT6(m_face->size->metrics.descender) ;
m_iMaxLineHeight = ascenderPixels - descenderPixels;
m_iMaxLineHeight *= m_vLines.size();
//compute the final line height
m_iMaxLineHeight = MAX(m_iMaxLineHeight, nHeight);
uint bitmapSize = m_iMaxLineWidth * m_iMaxLineHeight*4 ;
m_pData = new unsigned char[bitmapSize];
memset(m_pData,0, bitmapSize);
const char* pText = text;
iCurYCursor = ascenderPixels;
for (size_t i = 0; i < m_vLines.size(); i++) {
pText = m_vLines[i].sLineStr.c_str();
//initialize the origin cursor
iCurXCursor = computeLineStart(m_face, eAlignMask, *pText, i);
while (*pText != 0) {
int iError = FT_Load_Glyph(m_face, FT_Get_Char_Index(m_face, *pText), FT_LOAD_RENDER);
if (iError) {
break;
}
// convert glyph to bitmap with 256 gray
// and get the bitmap
FT_Bitmap & bitmap = m_face->glyph->bitmap;
FT_Pos horiBearingYPixels = RSHIFT6(m_face->glyph->metrics.horiBearingY) ;
FT_Pos horiBearingXPixels = RSHIFT6(m_face->glyph->metrics.horiBearingX) ;
FT_Pos horiAdvancePixels = RSHIFT6(m_face->glyph->metrics.horiAdvance) ;
for (int i = 0; i < bitmap.rows; ++i) {
iY = iCurYCursor + i - horiBearingYPixels;
if (iY < 0 || iY>=m_iMaxLineHeight) {
//exceed the height truncate
continue;
}
rowOffset = iY * m_iMaxLineWidth ;
// if it has gray>0 we set show it as 1, otherwise 0
for (int j = 0; j < bitmap.width; ++j) {
cTemp = bitmap.buffer[i * bitmap.width + j];
if( cTemp )
{
iX = iCurXCursor + j + horiBearingXPixels;
offset = (rowOffset + iX) * 4 ;
IwAssert( GAME, ((offset + 3) < bitmapSize) ) ;
iTemp = cTemp << 24 | cTemp << 16 | cTemp << 8 | cTemp;
*(int*) &m_pData[ offset ] = iTemp ; // ARGB
}
}
}
//step to next glyph
iCurXCursor += horiAdvancePixels + m_iInterval;
pText++;
}
iCurYCursor += ascenderPixels - descenderPixels ;
}
//clear all lines
m_vLines.clear();
//success;
if (iError) {
bRet = false;
} else
bRet = true;
}while(0);
return bRet;
}
static BitmapDC& sharedBitmapDC()
{
static BitmapDC s_BmpDC;
return s_BmpDC;
}
//////////////////////////////////////////////////////////////////////////
// Implement 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*/)
{
IW_CALLSTACK("UIImage::initWithImageFile");
bool bRet = false;
unsigned long nSize = 0;
unsigned char* pBuffer = CCFileUtils::sharedFileUtils()->getFileData(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 /*= kFmtPng*/ )
{
CC_UNUSED_PARAM(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,
int nWidth,
int nHeight,
int nBitsPerComponent)
{
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 (kFmtWebp == eFmt)
{
bRet = _initWithWebpData(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)
{
IW_CALLSTACK("CCImage::_initWithJpgData");
/* 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_source_mgr srcmgr;
srcmgr.bytes_in_buffer = nSize;
srcmgr.next_input_byte = (JOCTET*) data;
srcmgr.init_source = CCImageHelper::JPEGInitSource;
srcmgr.fill_input_buffer = CCImageHelper::JPEGFillInputBuffer;
srcmgr.skip_input_data = CCImageHelper::JPEGSkipInputData;
srcmgr.resync_to_restart = jpeg_resync_to_restart;
srcmgr.term_source = CCImageHelper::JPEGTermSource;
cinfo.src = &srcmgr;
// 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;
}
void userReadData(png_structp pngPtr, png_bytep data, png_size_t length) {
png_voidp png_pointer = png_get_io_ptr(pngPtr);
s3eFileRead((char*)data, length, 1, (s3eFile*)png_pointer);
}
#define PNGSIGSIZE 8
bool CCImage::_initWithPngData(void * pData, int nDatalen)
{
IW_CALLSTACK("CCImage::_initWithPngData");
bool bRet = false;
s3eFile* pFile = s3eFileOpenFromMemory(pData, nDatalen);
IwAssert(GAME, pFile);
png_byte pngsig[PNGSIGSIZE];
bool is_png = false;
s3eFileRead((char*)pngsig, PNGSIGSIZE, 1, pFile);
is_png = png_sig_cmp(pngsig, 0, PNGSIGSIZE) == 0 ? true : false;
if (!is_png)
return false;
png_structp pngPtr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (!pngPtr)
return false;
png_infop infoPtr = png_create_info_struct(pngPtr);
if (!infoPtr)
return false;
png_bytep* rowPtrs = NULL;
m_pData = NULL;
if (setjmp(png_jmpbuf(pngPtr))) {
png_destroy_read_struct(&pngPtr, &infoPtr,(png_infopp)0);
if (rowPtrs != NULL) delete [] rowPtrs;
if (m_pData != NULL) delete [] m_pData;
CCLog("ERROR: An error occured while reading the PNG file");
return false;
}
png_set_read_fn(pngPtr, pFile, userReadData);
png_set_sig_bytes(pngPtr, PNGSIGSIZE);
png_read_info(pngPtr, infoPtr);
png_uint_32 bitdepth = png_get_bit_depth(pngPtr, infoPtr);
png_uint_32 channels = png_get_channels(pngPtr, infoPtr);
png_uint_32 color_type = png_get_color_type(pngPtr, infoPtr);
// Convert palette color to true color
if (color_type ==PNG_COLOR_TYPE_PALETTE)
png_set_palette_to_rgb(pngPtr);
// Convert low bit colors to 8 bit colors
if (png_get_bit_depth(pngPtr, infoPtr) < 8)
{
if (color_type==PNG_COLOR_TYPE_GRAY || color_type==PNG_COLOR_TYPE_GRAY_ALPHA)
png_set_gray_1_2_4_to_8(pngPtr);
else
png_set_packing(pngPtr);
}
if (png_get_valid(pngPtr, infoPtr, PNG_INFO_tRNS))
png_set_tRNS_to_alpha(pngPtr);
// Convert high bit colors to 8 bit colors
if (bitdepth == 16)
png_set_strip_16(pngPtr);
// Convert gray color to true color
if (color_type==PNG_COLOR_TYPE_GRAY || color_type==PNG_COLOR_TYPE_GRAY_ALPHA)
png_set_gray_to_rgb(pngPtr);
// Update the changes
png_read_update_info(pngPtr, infoPtr);
// init image info
m_bPreMulti = true;
unsigned int bytesPerComponent = png_get_channels(pngPtr, infoPtr);
m_bHasAlpha = (bytesPerComponent == 4 ? true : false);
m_nHeight = (unsigned int)png_get_image_height(pngPtr, infoPtr);
m_nWidth = (unsigned int) png_get_image_width(pngPtr, infoPtr);
m_nBitsPerComponent = (unsigned int)png_get_bit_depth(pngPtr, infoPtr);
m_pData = new unsigned char[m_nHeight * m_nWidth * bytesPerComponent];
unsigned int bytesPerRow = m_nWidth * bytesPerComponent;
{
unsigned char *ptr = m_pData;
rowPtrs = new png_bytep[m_nHeight];
for (int i = 0; i < m_nHeight; i++) {
int q = (i) * bytesPerRow;
rowPtrs[i] = (png_bytep)m_pData + q;
}
png_read_image(pngPtr, rowPtrs);
delete[] (png_bytep)rowPtrs;
png_destroy_read_struct(&pngPtr, &infoPtr,(png_infopp)0);
s3eFileClose(pFile);
pFile = 0;
}
// premultiplay if alpha
if(m_bHasAlpha)
for(unsigned int i = 0; i < m_nHeight*bytesPerRow; i += bytesPerComponent){
*(m_pData + i + 0) = (*(m_pData + i + 0) * *(m_pData + i + 3) + 1) >> 8;
*(m_pData + i + 1) = (*(m_pData + i + 1) * *(m_pData + i + 3) + 1) >> 8;
*(m_pData + i + 2) = (*(m_pData + i + 2) * *(m_pData + i + 3) + 1) >> 8;
*(m_pData + i + 3) = *(m_pData + i + 3);
}
bRet = true;
return bRet;
}
bool CCImage::initWithString(
const char * pText,
int nWidth/* = 0*/,
int nHeight/* = 0*/,
ETextAlign eAlignMask/* = kAlignCenter*/,
const char * pFontName/* = nil*/,
int nSize/* = 0*/)
{
bool bRet = false;
do
{
CC_BREAK_IF(! pText);
BitmapDC &dc = sharedBitmapDC();
std::string fullFontName = pFontName;
std::string lowerCasePath = fullFontName;
std::transform(lowerCasePath.begin(), lowerCasePath.end(), lowerCasePath.begin(), ::tolower);
if ( lowerCasePath.find(".ttf") != std::string::npos ) {
fullFontName = CCFileUtils::sharedFileUtils()->fullPathForFilename(pFontName);
}
CC_BREAK_IF(! dc.getBitmap(pText, nWidth, nHeight, eAlignMask, fullFontName.c_str(), nSize));
// assign the dc.m_pData to m_pData in order to save time
m_pData = dc.m_pData;
CC_BREAK_IF(! m_pData);
m_nWidth = (short)dc.m_iMaxLineWidth;
m_nHeight = (short)dc.m_iMaxLineHeight;
m_bHasAlpha = true;
m_bPreMulti = true;
m_nBitsPerComponent = 8;
bRet = true;
dc.reset();
}while (0);
//do nothing
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_ALPHA( 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 supported
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)
{
// todo
return false;
}
bool CCImage::_saveImageToPNG(const char * pszFilePath, bool bIsToRGB)
{
// todo
return false;
}
bool CCImage::_saveImageToJPG(const char * pszFilePath)
{
// todo
return false;
}
NS_CC_END;
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