ILboolean iLoadJpegInternal(ILstring FileName, ILvoid *Lump, ILuint Size)
{
JPEG_CORE_PROPERTIES Image;
if (iCurImage == NULL) {
ilSetError(IL_ILLEGAL_OPERATION);
return IL_FALSE;
}
if (ijlInit(&Image) != IJL_OK) {
ilSetError(IL_LIB_JPEG_ERROR);
return IL_FALSE;
}
if (FileName != NULL) {
Image.JPGFile = FileName;
if (ijlRead(&Image, IJL_JFILE_READPARAMS) != IJL_OK) {
ilSetError(IL_LIB_JPEG_ERROR);
return IL_FALSE;
}
}
else {
Image.JPGBytes = Lump;
Image.JPGSizeBytes = Size > 0 ? Size : UINT_MAX;
if (ijlRead(&Image, IJL_JBUFF_READPARAMS) != IJL_OK) {
ilSetError(IL_LIB_JPEG_ERROR);
return IL_FALSE;
}
}
switch (Image.JPGChannels)
{
case 1:
Image.JPGColor = IJL_G;
Image.DIBChannels = 1;
Image.DIBColor = IJL_G;
iCurImage->Format = IL_LUMINANCE;
break;
case 3:
Image.JPGColor = IJL_YCBCR;
Image.DIBChannels = 3;
Image.DIBColor = IJL_RGB;
iCurImage->Format = IL_RGB;
break;
case 4:
Image.JPGColor = IJL_YCBCRA_FPX;
Image.DIBChannels = 4;
Image.DIBColor = IJL_RGBA_FPX;
iCurImage->Format = IL_RGBA;
break;
default:
// This catches everything else, but no
// color twist will be performed by the IJL.
/*Image.DIBColor = (IJL_COLOR)IJL_OTHER;
Image.JPGColor = (IJL_COLOR)IJL_OTHER;
Image.DIBChannels = Image.JPGChannels;
break;*/
ijlFree(&Image);
ilSetError(IL_LIB_JPEG_ERROR);
return IL_FALSE;
}
if (!ilTexImage(Image.JPGWidth, Image.JPGHeight, 1, (ILubyte)Image.DIBChannels, iCurImage->Format, IL_UNSIGNED_BYTE, NULL)) {
ijlFree(&Image);
return IL_FALSE;
}
iCurImage->Origin = IL_ORIGIN_UPPER_LEFT;
Image.DIBWidth = Image.JPGWidth;
Image.DIBHeight = Image.JPGHeight;
Image.DIBPadBytes = 0;
Image.DIBBytes = iCurImage->Data;
if (FileName != NULL) {
if (ijlRead(&Image, IJL_JFILE_READWHOLEIMAGE) != IJL_OK) {
ijlFree(&Image);
ilSetError(IL_LIB_JPEG_ERROR);
return IL_FALSE;
}
}
else {
if (ijlRead(&Image, IJL_JBUFF_READWHOLEIMAGE) != IJL_OK) {
ijlFree(&Image);
ilSetError(IL_LIB_JPEG_ERROR);
return IL_FALSE;
}
}
ijlFree(&Image);
ilFixImage();
return IL_TRUE;
}
void __stdcall IMAGE_LoadFromMemory(void *data_in, int size_in, void **data_out, int *size_out, int *width, int *height)
{
//----------------------------------------------------------
// An example using the Intel(R) JPEG Library:
// -- Decode image from a JFIF buffer.
//----------------------------------------------------------
int i;
unsigned char tp,*cp;
BYTE* lpJpgBuffer=(BYTE *)data_in;
DWORD dwJpgBufferSize=size_in;
//DWORD* numberOfChannels;
BOOL bres;
IJLERR jerr;
DWORD dwWholeImageSize;
BYTE* lpTemp = NULL;
// Allocate the IJL JPEG_CORE_PROPERTIES structure.
JPEG_CORE_PROPERTIES jcprops;
bres = TRUE;
__try
{
// Initialize the Intel(R) JPEG Library.
jerr = ijlInit(&jcprops);
if(IJL_OK != jerr)
{
bres = FALSE;
__leave;
}
// Get information on the JPEG image
// (i.e., width, height, and channels).
jcprops.JPGFile = NULL;
jcprops.JPGBytes = lpJpgBuffer;
jcprops.JPGSizeBytes = dwJpgBufferSize;
jerr = ijlRead(&jcprops, IJL_JBUFF_READPARAMS);
if(IJL_OK != jerr)
{
bres = FALSE;
__leave;
}
// Set the JPG color space ... this will always be
// somewhat of an educated guess at best because JPEG
// is "color blind" (i.e., nothing in the bit stream
// tells you what color space the data was encoded from).
// However, in this example we assume that we are
// reading JFIF files which means that 3 channel images
// are in the YCbCr color space and 1 channel images are
// in the Y color space.
switch(jcprops.JPGChannels)
{
case 1:
{
jcprops.JPGColor = IJL_G;
jcprops.DIBColor = IJL_RGBA_FPX;
jcprops.DIBChannels = 4;
break;
}
case 3:
{
jcprops.JPGColor = IJL_YCBCR;
jcprops.DIBColor = IJL_RGBA_FPX;
jcprops.DIBChannels = 4;
break;
}
default:
{
// This catches everything else, but no
// color twist will be performed by the IJL.
jcprops.JPGColor = IJL_OTHER;
jcprops.DIBColor = IJL_OTHER;
jcprops.DIBChannels = jcprops.JPGChannels;
break;
}
}
// Compute size of desired pixel buffer.
*size_out = dwWholeImageSize = jcprops.JPGWidth * jcprops.JPGHeight *
jcprops.DIBChannels;
// Allocate memory to hold the decompressed image data.
lpTemp = new BYTE [dwWholeImageSize];
if(NULL == lpTemp)
{
bres = FALSE;
__leave;
}
// Set up the info on the desired DIB properties.
jcprops.DIBWidth = jcprops.JPGWidth;
jcprops.DIBHeight = jcprops.JPGHeight;
jcprops.DIBPadBytes = 0;
jcprops.DIBBytes = lpTemp;
// Now get the actual JPEG image data into the pixel buffer.
jerr = ijlRead(&jcprops, IJL_JBUFF_READWHOLEIMAGE);
if(IJL_OK != jerr)
{
bres = FALSE;
__leave;
}
} // __try
__finally
{
//if(FALSE == bres)
//{
//if(NULL != lpTemp)
//{
//delete [] lpTemp;
//lpTemp = NULL;
//}
}
// Clean up the Intel(R) JPEG Library.
ijlFree(&jcprops);
*width = jcprops.DIBWidth;
*height = jcprops.DIBHeight;
//*numberOfChannels = jcprops.DIBChannels;
cp=(unsigned char *)lpTemp;
//ora converto da RGBA -> a -> BGRA
for (i=0; i<*width * *height *4 ; i+=4)
{
tp=cp[i];
cp[i]=cp[i+2];
cp[i+2]=tp;
//cp[i+3]=0; //setto l'alpha a zero
}
*data_out = lpTemp;
//} // __finally
}
// read image into this buffer.
void * Jpeg::ReadImage(int &width,
int &height,
int &nchannels,
const void *buffer,
int sizebytes)
{
JPEG_CORE_PROPERTIES jcprops;
if ( ijlInit(&jcprops) != IJL_OK )
{
ijlFree(&jcprops);
return 0;
}
jcprops.JPGBytes = (unsigned char *) buffer;
jcprops.JPGSizeBytes = sizebytes;
jcprops.jquality = 100;
if ( ijlRead(&jcprops,IJL_JBUFF_READPARAMS) != IJL_OK )
{
ijlFree(&jcprops);
return 0;
}
width = jcprops.JPGWidth;
height = jcprops.JPGHeight;
IJLIOTYPE mode;
mode = IJL_JBUFF_READWHOLEIMAGE;
nchannels = jcprops.JPGChannels;
unsigned char * pixbuff = new unsigned char[width*height*nchannels];
if ( !pixbuff )
{
ijlFree(&jcprops);
return 0;
}
jcprops.DIBWidth = width;
jcprops.DIBHeight = height;
jcprops.DIBChannels = nchannels;
jcprops.DIBPadBytes = 0;
jcprops.DIBBytes = (unsigned char *)pixbuff;
if ( jcprops.JPGChannels == 3 )
{
jcprops.DIBColor = IJL_RGB;
jcprops.JPGColor = IJL_YCBCR;
jcprops.JPGSubsampling = IJL_411;
jcprops.DIBSubsampling = (IJL_DIBSUBSAMPLING) 0;
}
else
{
jcprops.DIBColor = IJL_G;
jcprops.JPGColor = IJL_G;
jcprops.JPGSubsampling = (IJL_JPGSUBSAMPLING) 0;
jcprops.DIBSubsampling = (IJL_DIBSUBSAMPLING) 0;
}
if ( ijlRead(&jcprops, mode) != IJL_OK )
{
ijlFree(&jcprops);
return 0;
}
if ( ijlFree(&jcprops) != IJL_OK ) return 0;
return (void *)pixbuff;
}
ALERROR JPEGLoadFromMemory (char *pImage, int iSize, DWORD dwFlags, HPALETTE hPalette, HBITMAP *rethBitmap)
// JPEGLoadFromMemory
//
// Load from a memory stream
{
ALERROR error;
IJLERR jerr;
// Initialize library
JPEG_CORE_PROPERTIES jcprops;
jerr = ijlInit(&jcprops);
if (jerr != IJL_OK)
return ERR_FAIL;
// Point to the buffer
jcprops.JPGFile = NULL;
jcprops.JPGBytes = (BYTE *)pImage;
jcprops.JPGSizeBytes = iSize;
// Read parameters
jerr = ijlRead(&jcprops, IJL_JBUFF_READPARAMS);
if (jerr != IJL_OK)
{
ijlFree(&jcprops);
return ERR_FAIL;
}
DWORD width = jcprops.JPGWidth;
DWORD height = jcprops.JPGHeight;
DWORD nchannels = 3; // 24-bits
DWORD dib_line_width = width * nchannels;
DWORD dib_pad_bytes = IJL_DIB_PAD_BYTES(width,nchannels);
// Allocate a dib
HBITMAP hBitmap;
BYTE *p24BitPixel;
if (error = dibCreate24bitDIB(width,
height,
0,
&hBitmap,
&p24BitPixel))
{
ijlFree(&jcprops);
return error;
}
// Setup the library to load into the dib format
jcprops.DIBWidth = width;
jcprops.DIBHeight = -(int)height;
jcprops.DIBChannels = nchannels;
jcprops.DIBColor = IJL_BGR;
jcprops.DIBPadBytes = dib_pad_bytes;
jcprops.DIBBytes = p24BitPixel;
// Setup the color space
switch (jcprops.JPGChannels)
{
case 1:
jcprops.JPGColor = IJL_G;
break;
case 3:
jcprops.JPGColor = IJL_YCBCR;
break;
default:
{
jcprops.DIBColor = (IJL_COLOR)IJL_OTHER;
jcprops.JPGColor = (IJL_COLOR)IJL_OTHER;
}
}
// Load the data in the buffer
jerr = ijlRead(&jcprops, IJL_JBUFF_READWHOLEIMAGE);
if (jerr != IJL_OK)
{
::DeleteObject(hBitmap);
ijlFree(&jcprops);
return ERR_FAIL;
}
// Done
ijlFree(&jcprops);
// If we want a DIB, just return that; otherwise,
// convert to DDB and return that
if (dwFlags & JPEG_LFR_DIB)
*rethBitmap = hBitmap;
else
{
HBITMAP hDDB;
error = dibConvertToDDB(hBitmap, hPalette, &hDDB);
::DeleteObject(hBitmap);
if (error)
return error;
*rethBitmap = hDDB;
}
return NOERROR;
}
static bool DecodeFromJPEGBuffer( byte* lpJpgBuffer, dword dwJpgBufferSize, byte** lppRgbBuffer,
dword* lpdwWidth, dword* lpdwHeight, dword* lpdwNumberOfChannels)
{
bool bres = true;
IJLERR jerr;
dword dwWholeImageSize;
byte * lpTemp = NULL;
// Allocate the IJL JPEG_CORE_PROPERTIES structure.
JPEG_CORE_PROPERTIES jcprops;
__try
{
// Initialize the Intel(R) JPEG Library.
jerr = ijlInit(&jcprops);
if(IJL_OK != jerr)
{
bres = false;
__leave;
}
// Get information on the JPEG image
// (i.e., width, height, and channels).
jcprops.JPGFile = NULL;
jcprops.JPGBytes = lpJpgBuffer;
jcprops.JPGSizeBytes = dwJpgBufferSize;
jerr = ijlRead(&jcprops, IJL_JBUFF_READPARAMS);
if(IJL_OK != jerr)
{
bres = false;
__leave;
}
ASSERT( jcprops.JPGChannels == 4 );
//jcprops.JPGColor = IJL_YCBCRA_FPX;
jcprops.DIBColor = IJL_RGBA_FPX;
jcprops.DIBChannels = 4;
// Compute size of desired pixel buffer.
dwWholeImageSize = jcprops.JPGWidth * jcprops.JPGHeight * jcprops.DIBChannels;
// Allocate memory to hold the decompressed image data.
lpTemp = new byte [dwWholeImageSize];
if(NULL == lpTemp)
{
bres = false;
__leave;
}
// Set up the info on the desired DIB properties.
jcprops.DIBWidth = jcprops.JPGWidth;
jcprops.DIBHeight = jcprops.JPGHeight;
jcprops.DIBPadBytes = 0;
jcprops.DIBBytes = lpTemp;
// Now get the actual JPEG image data into the pixel buffer.
jerr = ijlRead(&jcprops, IJL_JBUFF_READWHOLEIMAGE);
if(IJL_OK != jerr)
{
bres = false;
__leave;
}
} // __try
__finally
{
if(false == bres)
{
if(NULL != lpTemp)
{
delete [] lpTemp;
lpTemp = NULL;
}
}
// Clean up the Intel(R) JPEG Library.
ijlFree(&jcprops);
*lpdwWidth = jcprops.DIBWidth;
*lpdwHeight = jcprops.DIBHeight;
*lpdwNumberOfChannels = jcprops.DIBChannels;
*lppRgbBuffer = lpTemp;
} // __finally
return bres;
} // DecodeFromJPEGBuffer()
/////////////////////////////////////////
// Texture::ImageJPG::Load
void Texture::ImageJPG::Load(const char *filename)
{
throw Daher::Exception("Cannot load image: IJL initialization failed");
#if 0
JPEG_CORE_PROPERTIES image;
unsigned char *imageBits = NULL; // the bits, before swapping
int imageSize = 0;
DGL::LogPrint("Loading JPEG Image '%s' ...",filename);
ZeroMemory( &image, sizeof( JPEG_CORE_PROPERTIES ) );
// try to init the image 'container'
if( ijlInit( &image ) != IJL_OK )
throw Daher::Exception("Cannot load image: IJL initialization failed");
image.JPGFile = const_cast<char*>(filename);
// try to read the params from the file
if( ijlRead( &image, IJL_JFILE_READPARAMS ) != IJL_OK )
throw Daher::Exception("File Not Found");
// check info about the channels
switch(image.JPGChannels) {
case 1:
image.JPGColor = IJL_G;
break;
case 3:
image.JPGColor = IJL_YCBCR;
break;
default:
// This catches everything else, but no
// color twist will be performed by the IJL.
image.DIBColor = (IJL_COLOR)IJL_OTHER;
image.JPGColor = (IJL_COLOR)IJL_OTHER;
break;
}
image.DIBWidth = image.JPGWidth;
image.DIBHeight = image.JPGHeight;
image.DIBChannels = 3;
image.DIBPadBytes = IJL_DIB_PAD_BYTES(image.DIBWidth,image.DIBChannels);
imageSize = (image.DIBWidth * image.DIBChannels + image.DIBPadBytes) * image.DIBHeight;
// allocate memory to store the image unsigned chars (the info OGL wants)
imageBits = new unsigned char[ imageSize ];
this->data = new unsigned char[ imageSize ];
image.DIBBytes = imageBits;
// Read the image unsigned chars from the image
if( ijlRead( &image, IJL_JFILE_READWHOLEIMAGE ) != IJL_OK ) {
delete [] imageBits;
delete [] this->data;
this->data = NULL;
return;
}
// free the image container
if( ijlFree( &image ) != IJL_OK )
throw Daher::Exception("Cannot Free IJL Container");
this->width = image.DIBWidth;
this->height = image.DIBHeight;
// the JPG stores its image unsigned chars in a different order, instead of
// going from lower to higher lines it goes higher to lower.
// Use imageBits2 after this loop.
for (int j = 0;j < this->height; j++) {
for (int i = 0;i < this->width; i++) {
this->data[(j * this->width+i)* 3+ this->Red] = imageBits[((this->height-1-j) * this->width+i)* 3+ this->Blue];
this->data[(j * this->width+i)* 3+ this->Green] = imageBits[((this->height-1-j) * this->width+i)* 3+ this->Green];
this->data[(j * this->width+i)* 3+ this->Blue] = imageBits[((this->height-1-j) * this->width+i)* 3+ this->Red];
}
}
// free memory
delete [] imageBits;
#endif
}