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

issue #931: refactor CCImage and CCTexture2D

This commit is contained in:
minggo 2012-04-26 17:36:32 +08:00
parent ff38eda2fe
commit 7ecbd8ea6c
4 changed files with 142 additions and 229 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
HelloWorld/proj.android/jni/helloworld/main.cpp
View File

@ -1,6 +1,7 @@
#include "AppDelegate.h"
#include "cocos2d.h"
#include "platform/android/jni/JniHelper.h"
#include "CCEventType.h"
#include <jni.h>
#include <android/log.h>

127
cocos2dx/platform/CCImage.cpp
View File

@ -28,22 +28,13 @@ THE SOFTWARE.
#include "CCStdC.h"
#include "CCFileUtils.h"
#include "png.h"
#include "jpeglib.h"
#include <string>
#include <ctype.h>
#if (CC_TARGET_PLATFORM != CC_PLATFORM_IOS)
// on ios, we should use platform/ios/CCImage_ios.mm instead
#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;
@ -206,20 +197,21 @@ bool CCImage::_initWithJpgData(void * data, int nSize)
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[8] = {0};
png_byte header[PNGSIGSIZE] = {0};
png_structp png_ptr = 0;
png_infop info_ptr = 0;
unsigned char * pImateData = 0;
do
{
// png header len is 8 bytes
CC_BREAK_IF(nDatalen < 8);
CC_BREAK_IF(nDatalen < PNGSIGSIZE);
// check the data is png or not
memcpy(header, pData, 8);
CC_BREAK_IF(png_sig_cmp(header, 0, 8));
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);
@ -228,9 +220,11 @@ bool CCImage::_initWithPngData(void * pData, int nDatalen)
// 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;
@ -238,67 +232,74 @@ bool CCImage::_initWithPngData(void * pData, int nDatalen)
imageSource.offset = 0;
png_set_read_fn(png_ptr, &imageSource, pngReadCallback);
// read png
// PNG_TRANSFORM_EXPAND: perform set_expand()
// PNG_TRANSFORM_PACKING: expand 1, 2 and 4-bit samples to bytes
// PNG_TRANSFORM_STRIP_16: strip 16-bit samples to 8 bits
// PNG_TRANSFORM_GRAY_TO_RGB: expand grayscale samples to RGB (or GA to RGBA)
png_read_png(png_ptr, info_ptr, PNG_TRANSFORM_EXPAND | PNG_TRANSFORM_PACKING
| PNG_TRANSFORM_STRIP_16 | PNG_TRANSFORM_GRAY_TO_RGB, 0);
// read png header info
int color_type = 0;
png_uint_32 nWidth = 0;
png_uint_32 nHeight = 0;
int nBitsPerComponent = 0;
png_get_IHDR(png_ptr, info_ptr, &nWidth, &nHeight, &nBitsPerComponent, &color_type, 0, 0, 0);
// read png file info
png_read_info(png_ptr, info_ptr);
// init image info
m_bPreMulti = true;
m_bHasAlpha = ( info_ptr->color_type & PNG_COLOR_MASK_ALPHA ) ? true : false;
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 channels = png_get_channels(png_ptr, info_ptr);
png_uint_32 color_type = png_get_color_type(png_ptr, info_ptr);
// allocate memory and read data
int bytesPerComponent = 3;
CCLOG("color type %u", color_type);
// only support color type: PNG_COLOR_TYPE_RGB, PNG_COLOR_TYPE_RGB_ALPHA PNG_COLOR_TYPE_PALETTE
// and expand bit depth to 8
switch (color_type) {
case PNG_COLOR_TYPE_RGB:
case PNG_COLOR_TYPE_RGB_ALPHA:
// do nothing
break;
case PNG_COLOR_TYPE_PALETTE:
png_set_palette_to_rgb(png_ptr);
channels = 3;
break;
case PNG_COLOR_TYPE_GRAY:
case PNG_COLOR_TYPE_GRAY_ALPHA:
if (m_nBitsPerComponent < 8)
{
png_set_expand_gray_1_2_4_to_8(png_ptr);
}
png_set_gray_to_rgb(png_ptr);
channels = 3;
break;
default:
CCLog("unsopprted color type %u", color_type);
goto out;
}
if (m_nBitsPerComponent == 16)
{
png_set_strip_16(png_ptr);
m_nBitsPerComponent = 8;
}
m_bHasAlpha = (color_type & PNG_COLOR_MASK_ALPHA) ? true : false;
if (m_bHasAlpha)
{
bytesPerComponent = 4;
channels = 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)
// read png data
// m_nBitsPerComponent will always be 8
m_pData = new unsigned char[m_nWidth * m_nHeight * channels];
png_bytep row_pointers[m_nHeight];
const unsigned int stride = m_nWidth * channels;
for (size_t i = 0; i < m_nHeight; ++i)
{
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);
}
png_uint_32 q = i * stride;
row_pointers[i] = (png_bytep)m_pData + q;
}
png_read_image(png_ptr, row_pointers);
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);
out:
if (png_ptr)
{
png_destroy_read_struct(&png_ptr, (info_ptr) ? &info_ptr : 0, 0);

171
cocos2dx/textures/CCTexture2D.cpp
View File

@ -271,19 +271,16 @@ bool CCTexture2D::initWithImage(CCImage * uiImage, ccResolutionType resolution)
// always load premultiplied images
return initPremultipliedATextureWithImage(uiImage, imageWidth, imageHeight);
}
bool CCTexture2D::initPremultipliedATextureWithImage(CCImage *image, unsigned int POTWide, unsigned int POTHigh)
bool CCTexture2D::initPremultipliedATextureWithImage(CCImage *image, unsigned int width, unsigned int height)
{
unsigned char* data = NULL;
unsigned char* tempData =NULL;
unsigned int* inPixel32 = NULL;
unsigned short* outPixel16 = NULL;
bool hasAlpha;
CCSize imageSize;
unsigned char* tempData = image->getData();
unsigned int* inPixel32 = NULL;
unsigned char* inPixel8 = NULL;
unsigned short* outPixel16 = NULL;
bool hasAlpha = image->hasAlpha();
CCSize imageSize = CCSizeMake((float)(image->getWidth()), (float)(image->getHeight()));
CCTexture2DPixelFormat pixelFormat;
hasAlpha = image->hasAlpha();
size_t bpp = image->getBitsPerComponent();
size_t bpp = image->getBitsPerComponent();
// compute pixel format
if(hasAlpha)
@ -298,162 +295,76 @@ bool CCTexture2D::initPremultipliedATextureWithImage(CCImage *image, unsigned in
}
else
{
CCLOG("cocos2d: CCTexture2D: Using RGB565 texture since image has no alpha");
pixelFormat = kCCTexture2DPixelFormat_RGB565;
}
}
imageSize = CCSizeMake((float)(image->getWidth()), (float)(image->getHeight()));
switch(pixelFormat) {
case kCCTexture2DPixelFormat_RGBA8888:
case kCCTexture2DPixelFormat_RGBA4444:
case kCCTexture2DPixelFormat_RGB5A1:
case kCCTexture2DPixelFormat_RGB565:
case kCCTexture2DPixelFormat_A8:
tempData = (unsigned char*)(image->getData());
CCAssert(tempData != NULL, "NULL image data.");
if(image->getWidth() == (short)POTWide && image->getHeight() == (short)POTHigh)
{
data = new unsigned char[POTHigh * POTWide * 4];
memcpy(data, tempData, POTHigh * POTWide * 4);
}
else
{
data = new unsigned char[POTHigh * POTWide * 4];
memset(data, 0, POTHigh * POTWide * 4);
unsigned char* pPixelData = (unsigned char*) tempData;
unsigned char* pTargetData = (unsigned char*) data;
int imageHeight = image->getHeight();
for(int y = 0; y < imageHeight; ++y)
{
memcpy(pTargetData+POTWide*4*y, pPixelData+(image->getWidth())*4*y, (image->getWidth())*4);
}
}
break;
case kCCTexture2DPixelFormat_RGB888:
tempData = (unsigned char*)(image->getData());
CCAssert(tempData != NULL, "NULL image data.");
if(image->getWidth() == (short)POTWide && image->getHeight() == (short)POTHigh)
{
data = new unsigned char[POTHigh * POTWide * 3];
memcpy(data, tempData, POTHigh * POTWide * 3);
}
else
{
data = new unsigned char[POTHigh * POTWide * 3];
memset(data, 0, POTHigh * POTWide * 3);
unsigned char* pPixelData = (unsigned char*) tempData;
unsigned char* pTargetData = (unsigned char*) data;
int imageHeight = image->getHeight();
for(int y = 0; y < imageHeight; ++y)
{
memcpy(pTargetData+POTWide*3*y, pPixelData+(image->getWidth())*3*y, (image->getWidth())*3);
}
}
break;
default:
CCAssert(0, "Invalid pixel format");
}
// Repack the pixel data into the right format
unsigned int length = width * height;
if(pixelFormat == kCCTexture2DPixelFormat_RGB565) {
//Convert "RRRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA" to "RRRRRGGGGGGBBBBB"
tempData = new unsigned char[POTHigh * POTWide * 2];
inPixel32 = (unsigned int*)data;
if (pixelFormat == kCCTexture2DPixelFormat_RGB565)
{
// Convert "RRRRRRRRRGGGGGGGGBBBBBBBB" to "RRRRRGGGGGGBBBBB"
tempData = new unsigned char[width * height * 2];
outPixel16 = (unsigned short*)tempData;
inPixel8 = (unsigned char*)image->getData();
unsigned int length = POTWide * POTHigh;
for(unsigned int i = 0; i < length; ++i, ++inPixel32)
for(unsigned int i = 0; i < length; ++i)
{
*outPixel16++ =
((((*inPixel32 >> 0) & 0xFF) >> 3) << 11) | // R
((((*inPixel32 >> 8) & 0xFF) >> 2) << 5) | // G
((((*inPixel32 >> 16) & 0xFF) >> 3) << 0); // B
(((*inPixel8++ & 0xFF) >> 3) << 11) | // R
(((*inPixel8++ & 0xFF) >> 2) << 5) | // G
(((*inPixel8++ & 0xFF) >> 3) << 0); // B
}
delete [] data;
data = tempData;
}
else if (pixelFormat == kCCTexture2DPixelFormat_RGBA4444) {
//Convert "RRRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA" to "RRRRGGGGBBBBAAAA"
tempData = new unsigned char[POTHigh * POTWide * 2];
inPixel32 = (unsigned int*)data;
else if (pixelFormat == kCCTexture2DPixelFormat_RGBA4444)
{
// Convert "RRRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA" to "RRRRGGGGBBBBAAAA"
inPixel32 = (unsigned int*)image->getData();
tempData = new unsigned char[width * height * 2];
outPixel16 = (unsigned short*)tempData;
unsigned int length = POTWide * POTHigh;
for(unsigned int i = 0; i < length; ++i, ++inPixel32)
{
*outPixel16++ =
((((*inPixel32 >> 0) & 0xFF) >> 4) << 12) | // R
((((*inPixel32 >> 8) & 0xFF) >> 4) << 8) | // G
((((*inPixel32 >> 8) & 0xFF) >> 4) << 8) | // G
((((*inPixel32 >> 16) & 0xFF) >> 4) << 4) | // B
((((*inPixel32 >> 24) & 0xFF) >> 4) << 0); // A
((((*inPixel32 >> 24) & 0xFF) >> 4) << 0); // A
}
delete [] data;
data = tempData;
}
else if (pixelFormat == kCCTexture2DPixelFormat_RGB5A1) {
//Convert "RRRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA" to "RRRRRGGGGGBBBBBA"
tempData = new unsigned char[POTHigh * POTWide * 2];
inPixel32 = (unsigned int*)data;
else if (pixelFormat == kCCTexture2DPixelFormat_RGB5A1)
{
// Convert "RRRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA" to "RRRRRGGGGGBBBBBA"
inPixel32 = (unsigned int*)image->getData();
tempData = new unsigned char[width * height * 2];
outPixel16 = (unsigned short*)tempData;
unsigned int length = POTWide * POTHigh;
for(unsigned int i = 0; i < length; ++i, ++inPixel32)
{
*outPixel16++ =
((((*inPixel32 >> 0) & 0xFF) >> 3) << 11) | // R
((((*inPixel32 >> 8) & 0xFF) >> 3) << 6) | // G
((((*inPixel32 >> 8) & 0xFF) >> 3) << 6) | // G
((((*inPixel32 >> 16) & 0xFF) >> 3) << 1) | // B
((((*inPixel32 >> 24) & 0xFF) >> 7) << 0); // A
((((*inPixel32 >> 24) & 0xFF) >> 7) << 0); // A
}
delete []data;
data = tempData;
}
else if (pixelFormat == kCCTexture2DPixelFormat_A8)
{
// fix me, how to convert to A8
pixelFormat = kCCTexture2DPixelFormat_RGBA8888;
/*
* The code can not work, how to convert to A8?
*
tempData = new unsigned char[POTHigh * POTWide];
inPixel32 = (unsigned int*)data;
outPixel8 = tempData;
unsigned int length = POTWide * POTHigh;
for(unsigned int i = 0; i < length; ++i, ++inPixel32)
{
*outPixel8++ = (*inPixel32 >> 24) & 0xFF;
}
delete []data;
data = tempData;
*/
// fixed me, how to convert?
}
if (data)
initWithData(tempData, pixelFormat, width, height, imageSize);
if (tempData != image->getData())
{
this->initWithData(data, pixelFormat, POTWide, POTHigh, imageSize);
// should be after calling super init
m_bHasPremultipliedAlpha = image->isPremultipliedAlpha();
//CGContextRelease(context);
delete [] data;
delete [] tempData;
}
m_bHasPremultipliedAlpha = image->isPremultipliedAlpha();
return true;
}