gusucode.com > VC++ 图像处理类库CxImage源代码-源码程序 > VC++ 图像处理类库CxImage源代码-源码程序/code/cximage_src/CxImage/ximatif.cpp
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/*
* File: ximatif.cpp
* Purpose: Platform Independent TIFF Image Class Loader and Writer
* 07/Aug/2001 Davide Pizzolato - www.xdp.it
* CxImage version 6.0.0 02/Feb/2008
*/
#include "ximatif.h"
#if CXIMAGE_SUPPORT_TIF
#define FIX_16BPP_DARKIMG // + VK: if uncomment, dark 16bpp images are fixed
#include "../tiff/tiffio.h"
#define CVT(x) (((x) * 255L) / ((1L<<16)-1))
#define SCALE(x) (((x)*((1L<<16)-1))/255)
#define CalculateLine(width,bitdepth) (((width * bitdepth) + 7) / 8)
#define CalculatePitch(line) (line + 3 & ~3)
extern "C" TIFF* _TIFFOpenEx(CxFile* stream, const char* mode);
////////////////////////////////////////////////////////////////////////////////
CxImageTIF::~CxImageTIF()
{
if (m_tif2) TIFFClose(m_tif2);
}
////////////////////////////////////////////////////////////////////////////////
#if CXIMAGE_SUPPORT_DECODE
////////////////////////////////////////////////////////////////////////////////
bool CxImageTIF::Decode(CxFile * hFile)
{
//Comment this line if you need more information on errors
// TIFFSetErrorHandler(NULL); //<Patrick Hoffmann>
//Open file and fill the TIFF structure
// m_tif = TIFFOpen(imageFileName,"rb");
TIFF* m_tif = _TIFFOpenEx(hFile, "rb");
uint32 height=0;
uint32 width=0;
uint16 bitspersample=1;
uint16 samplesperpixel=1;
uint32 rowsperstrip=(DWORD)-1;
uint16 photometric=0;
uint16 compression=1;
uint16 orientation=ORIENTATION_TOPLEFT; //<vho>
uint16 res_unit; //<Trifon>
uint32 x, y;
float resolution, offset;
BOOL isRGB;
BYTE *bits; //pointer to source data
BYTE *bits2; //pointer to destination data
cx_try
{
//check if it's a tiff file
if (!m_tif)
cx_throw("Error encountered while opening TIFF file");
// <Robert Abram> - 12/2002 : get NumFrames directly, instead of looping
// info.nNumFrames=0;
// while(TIFFSetDirectory(m_tif,(uint16)info.nNumFrames)) info.nNumFrames++;
info.nNumFrames = TIFFNumberOfDirectories(m_tif);
if (!TIFFSetDirectory(m_tif, (uint16)info.nFrame))
cx_throw("Error: page not present in TIFF file");
//get image info
TIFFGetField(m_tif, TIFFTAG_IMAGEWIDTH, &width);
TIFFGetField(m_tif, TIFFTAG_IMAGELENGTH, &height);
TIFFGetField(m_tif, TIFFTAG_SAMPLESPERPIXEL, &samplesperpixel);
TIFFGetField(m_tif, TIFFTAG_BITSPERSAMPLE, &bitspersample);
TIFFGetField(m_tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
TIFFGetField(m_tif, TIFFTAG_PHOTOMETRIC, &photometric);
TIFFGetField(m_tif, TIFFTAG_ORIENTATION, &orientation);
if (info.nEscape == -1) {
// Return output dimensions only
head.biWidth = width;
head.biHeight = height;
info.dwType = CXIMAGE_FORMAT_TIF;
cx_throw("output dimensions returned");
}
TIFFGetFieldDefaulted(m_tif, TIFFTAG_RESOLUTIONUNIT, &res_unit);
if (TIFFGetField(m_tif, TIFFTAG_XRESOLUTION, &resolution))
{
if (res_unit == RESUNIT_CENTIMETER) resolution = (float)(resolution*2.54f + 0.5f);
SetXDPI((long)resolution);
}
if (TIFFGetField(m_tif, TIFFTAG_YRESOLUTION, &resolution))
{
if (res_unit == RESUNIT_CENTIMETER) resolution = (float)(resolution*2.54f + 0.5f);
SetYDPI((long)resolution);
}
if (TIFFGetField(m_tif, TIFFTAG_XPOSITION, &offset)) info.xOffset = (long)offset;
if (TIFFGetField(m_tif, TIFFTAG_YPOSITION, &offset)) info.yOffset = (long)offset;
head.biClrUsed=0;
info.nBkgndIndex =-1;
if (rowsperstrip>height){
rowsperstrip=height;
TIFFSetField(m_tif, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
}
isRGB = /*(bitspersample >= 8) && (VK: it is possible so for RGB to have < 8 bpp!)*/
(photometric == PHOTOMETRIC_RGB) ||
(photometric == PHOTOMETRIC_YCBCR) ||
(photometric == PHOTOMETRIC_SEPARATED) ||
(photometric == PHOTOMETRIC_LOGL) ||
(photometric == PHOTOMETRIC_LOGLUV);
if (isRGB){
head.biBitCount=24;
}else{
if ((photometric==PHOTOMETRIC_MINISBLACK)||(photometric==PHOTOMETRIC_MINISWHITE)||(photometric==PHOTOMETRIC_PALETTE)){
if (bitspersample == 1){
head.biBitCount=1; //B&W image
head.biClrUsed =2;
} else if (bitspersample == 4) {
head.biBitCount=4; //16 colors gray scale
head.biClrUsed =16;
} else {
head.biBitCount=8; //gray scale
head.biClrUsed =256;
}
} else if (bitspersample == 4) {
head.biBitCount=4; // 16 colors
head.biClrUsed=16;
} else {
head.biBitCount=8; //256 colors
head.biClrUsed=256;
}
if ((bitspersample > 8) && (photometric==PHOTOMETRIC_PALETTE)) // + VK + (BIG palette! => convert to RGB)
{ head.biBitCount=24;
head.biClrUsed =0;
}
}
if (info.nEscape) cx_throw("Cancelled"); // <vho> - cancel decoding
Create(width,height,head.biBitCount,CXIMAGE_FORMAT_TIF); //image creation
if (!pDib) cx_throw("CxImageTIF can't create image");
#if CXIMAGE_SUPPORT_ALPHA
if (samplesperpixel==4) AlphaCreate(); //add alpha support for 32bpp tiffs
if (samplesperpixel==2 && bitspersample==8) AlphaCreate(); //add alpha support for 8bpp + alpha
#endif //CXIMAGE_SUPPORT_ALPHA
TIFFGetField(m_tif, TIFFTAG_COMPRESSION, &compression);
SetCodecOption(compression); // <DPR> save original compression type
if (isRGB) {
// Read the whole image into one big RGBA buffer using
// the traditional TIFFReadRGBAImage() API that we trust.
uint32* raster; // retrieve RGBA image
uint32 *row;
raster = (uint32*)_TIFFmalloc(width * height * sizeof (uint32));
if (raster == NULL) cx_throw("No space for raster buffer");
// Read the image in one chunk into an RGBA array
if(!TIFFReadRGBAImage(m_tif, width, height, raster, 1)) {
_TIFFfree(raster);
cx_throw("Corrupted TIFF file!");
}
// read the raster lines and save them in the DIB
// with RGB mode, we have to change the order of the 3 samples RGB
row = &raster[0];
bits2 = info.pImage;
for (y = 0; y < height; y++) {
if (info.nEscape){ // <vho> - cancel decoding
_TIFFfree(raster);
cx_throw("Cancelled");
}
bits = bits2;
for (x = 0; x < width; x++) {
*bits++ = (BYTE)TIFFGetB(row[x]);
*bits++ = (BYTE)TIFFGetG(row[x]);
*bits++ = (BYTE)TIFFGetR(row[x]);
#if CXIMAGE_SUPPORT_ALPHA
if (samplesperpixel==4) AlphaSet(x,y,(BYTE)TIFFGetA(row[x]));
#endif //CXIMAGE_SUPPORT_ALPHA
}
row += width;
bits2 += info.dwEffWidth;
}
_TIFFfree(raster);
} else {
int BIG_palette = (bitspersample > 8) && // + VK
(photometric==PHOTOMETRIC_PALETTE);
if (BIG_palette && (bitspersample > 24)) // + VK
cx_throw("Too big palette to handle"); // + VK
RGBQUAD *pal;
pal=(RGBQUAD*)calloc(BIG_palette ? 1<<bitspersample : 256,sizeof(RGBQUAD));
// ! VK: it coasts nothing but more correct to use 256 as temp palette storage
// ! VK: but for case of BIG palette it just copied
if (pal==NULL) cx_throw("Unable to allocate TIFF palette");
int bpp = bitspersample <= 8 ? bitspersample : 8; // + VK (to use instead of bitspersample for case of > 8)
// set up the colormap based on photometric
switch(photometric) {
case PHOTOMETRIC_MINISBLACK: // bitmap and greyscale image types
case PHOTOMETRIC_MINISWHITE:
if (bitspersample == 1) { // Monochrome image
if (photometric == PHOTOMETRIC_MINISBLACK) {
pal[1].rgbRed = pal[1].rgbGreen = pal[1].rgbBlue = 255;
} else {
pal[0].rgbRed = pal[0].rgbGreen = pal[0].rgbBlue = 255;
}
} else { // need to build the scale for greyscale images
if (photometric == PHOTOMETRIC_MINISBLACK) {
for (int i=0; i<(1<<bpp); i++){
pal[i].rgbRed = pal[i].rgbGreen = pal[i].rgbBlue = (BYTE)(i*(255/((1<<bpp)-1)));
}
} else {
for (int i=0; i<(1<<bpp); i++){
pal[i].rgbRed = pal[i].rgbGreen = pal[i].rgbBlue = (BYTE)(255-i*(255/((1<<bpp)-1)));
}
}
}
break;
case PHOTOMETRIC_PALETTE: // color map indexed
uint16 *red;
uint16 *green;
uint16 *blue;
TIFFGetField(m_tif, TIFFTAG_COLORMAP, &red, &green, &blue);
// Is the palette 16 or 8 bits ?
BOOL Palette16Bits = /*FALSE*/ BIG_palette;
if (!BIG_palette) {
int n= 1<<bpp;
while (n-- > 0) {
if (red[n] >= 256 || green[n] >= 256 || blue[n] >= 256) {
Palette16Bits=TRUE;
break;
}
}
}
// load the palette in the DIB
for (int i = (1 << ( BIG_palette ? bitspersample : bpp )) - 1; i >= 0; i--) {
if (Palette16Bits) {
pal[i].rgbRed =(BYTE) CVT(red[i]);
pal[i].rgbGreen = (BYTE) CVT(green[i]);
pal[i].rgbBlue = (BYTE) CVT(blue[i]);
} else {
pal[i].rgbRed = (BYTE) red[i];
pal[i].rgbGreen = (BYTE) green[i];
pal[i].rgbBlue = (BYTE) blue[i];
}
}
break;
}
if (!BIG_palette) { // + VK (BIG palette is stored until image is ready)
SetPalette(pal,/*head.biClrUsed*/ 1<<bpp); //palette assign // * VK
free(pal);
pal = NULL;
}
// read the tiff lines and save them in the DIB
uint32 nrow;
uint32 ys;
int line = CalculateLine(width, bitspersample * samplesperpixel);
long bitsize = TIFFStripSize(m_tif);
//verify bitsize: could be wrong if StripByteCounts is missing.
if (bitsize<(long)(head.biSizeImage*samplesperpixel))
bitsize = head.biSizeImage*samplesperpixel;
if ((bitspersample > 8) && (bitspersample != 16)) // + VK (for bitspersample == 9..15,17..32..64
bitsize *= (bitspersample + 7)/8;
int tiled_image = TIFFIsTiled(m_tif);
uint32 tw=0, tl=0;
BYTE* tilebuf=NULL;
if (tiled_image){
TIFFGetField(m_tif, TIFFTAG_TILEWIDTH, &tw);
TIFFGetField(m_tif, TIFFTAG_TILELENGTH, &tl);
rowsperstrip = tl;
bitsize = TIFFTileSize(m_tif) * (int)(1+width/tw);
tilebuf = (BYTE*)malloc(TIFFTileSize(m_tif));
}
bits = (BYTE*)malloc(bitspersample==16? bitsize*2 : bitsize); // * VK
BYTE * bits16 = NULL; // + VK
int line16 = 0; // + VK
if (!tiled_image && bitspersample==16) { // + VK +
line16 = line;
line = CalculateLine(width, 8 * samplesperpixel);
bits16 = bits;
bits = (BYTE*)malloc(bitsize);
}
if (bits==NULL){
if (bits16) free(bits16); // + VK
if (pal) free(pal); // + VK
if (tilebuf)free(tilebuf); // + VK
cx_throw("CxImageTIF can't allocate memory");
}
#ifdef FIX_16BPP_DARKIMG // + VK: for each line, store shift count bits used to fix it
BYTE* row_shifts = NULL;
if (bits16) row_shifts = (BYTE*)malloc(height);
#endif
for (ys = 0; ys < height; ys += rowsperstrip) {
if (info.nEscape){ // <vho> - cancel decoding
free(bits);
cx_throw("Cancelled");
}
nrow = (ys + rowsperstrip > height ? height - ys : rowsperstrip);
if (tiled_image){
uint32 imagew = TIFFScanlineSize(m_tif);
uint32 tilew = TIFFTileRowSize(m_tif);
int iskew = imagew - tilew;
uint8* bufp = (uint8*) bits;
uint32 colb = 0;
for (uint32 col = 0; col < width; col += tw) {
if (TIFFReadTile(m_tif, tilebuf, col, ys, 0, 0) < 0){
free(tilebuf);
free(bits);
cx_throw("Corrupted tiled TIFF file!");
}
if (colb + tw > imagew) {
uint32 owidth = imagew - colb;
uint32 oskew = tilew - owidth;
TileToStrip(bufp + colb, tilebuf, nrow, owidth, oskew + iskew, oskew );
} else {
TileToStrip(bufp + colb, tilebuf, nrow, tilew, iskew, 0);
}
colb += tilew;
}
} else {
if (TIFFReadEncodedStrip(m_tif, TIFFComputeStrip(m_tif, ys, 0),
(bits16? bits16 : bits), nrow * (bits16 ? line16 : line)) == -1) { // * VK
#ifdef NOT_IGNORE_CORRUPTED
free(bits);
if (bits16) free(bits16); // + VK
cx_throw("Corrupted TIFF file!");
#else
break;
#endif
}
}
for (y = 0; y < nrow; y++) {
long offset=(nrow-y-1)*line;
if ((bitspersample==16) && !BIG_palette) { // * VK
long offset16 = (nrow-y-1)*line16; // + VK
if (bits16) { // + VK +
#ifdef FIX_16BPP_DARKIMG
int the_shift;
BYTE hi_byte, hi_max=0;
DWORD xi;
for (xi=0;xi<(uint32)line;xi++) {
hi_byte = bits16[xi*2+offset16+1];
if(hi_byte>hi_max)
hi_max = hi_byte;
}
the_shift = (hi_max == 0) ? 8 : 0;
if (!the_shift)
while( ! (hi_max & 0x80) ) {
the_shift++;
hi_max <<= 1;
}
row_shifts[height-ys-nrow+y] = the_shift;
the_shift = 8 - the_shift;
for (xi=0;xi<(uint32)line;xi++)
bits[xi+offset]= ((bits16[xi*2+offset16+1]<<8) | bits16[xi*2+offset16]) >> the_shift;
#else
for (DWORD xi=0;xi<(uint32)line;xi++)
bits[xi+offset]=bits16[xi*2+offset16+1];
#endif
} else {
for (DWORD xi=0;xi<width;xi++)
bits[xi+offset]=bits[xi*2+offset+1];
}
}
if (samplesperpixel==1) {
if (BIG_palette)
if (bits16) {
long offset16 = (nrow-y-1)*line16; // + VK
MoveBitsPal( info.pImage + info.dwEffWidth * (height-ys-nrow+y),
bits16 + offset16, width, bitspersample, pal );
} else
MoveBitsPal( info.pImage + info.dwEffWidth * (height-ys-nrow+y),
bits + offset, width, bitspersample, pal );
else if ((bitspersample == head.biBitCount) ||
(bitspersample == 16)) //simple 8bpp, 4bpp image or 16bpp
memcpy(info.pImage+info.dwEffWidth*(height-ys-nrow+y),bits+offset,info.dwEffWidth);
else
MoveBits( info.pImage + info.dwEffWidth * (height-ys-nrow+y),
bits + offset, width, bitspersample );
} else if (samplesperpixel==2) { //8bpp image with alpha layer
int xi=0;
int ii=0;
int yi=height-ys-nrow+y;
#if CXIMAGE_SUPPORT_ALPHA
if (!pAlpha) AlphaCreate(); // + VK
#endif //CXIMAGE_SUPPORT_ALPHA
while (ii<line){
SetPixelIndex(xi,yi,bits[ii+offset]);
#if CXIMAGE_SUPPORT_ALPHA
AlphaSet(xi,yi,bits[ii+offset+1]);
#endif //CXIMAGE_SUPPORT_ALPHA
ii+=2;
xi++;
if (xi>=(int)width){
yi--;
xi=0;
}
}
} else { //photometric==PHOTOMETRIC_CIELAB
if (head.biBitCount!=24){ //fix image
Create(width,height,24,CXIMAGE_FORMAT_TIF);
#if CXIMAGE_SUPPORT_ALPHA
if (samplesperpixel==4) AlphaCreate();
#endif //CXIMAGE_SUPPORT_ALPHA
}
int xi=0;
uint32 ii=0;
int yi=height-ys-nrow+y;
RGBQUAD c;
int l,a,b,bitsoffset;
double p,cx,cy,cz,cr,cg,cb;
while (ii</*line*/width){ // * VK
bitsoffset = ii*samplesperpixel+offset;
l=bits[bitsoffset];
a=bits[bitsoffset+1];
b=bits[bitsoffset+2];
if (a>127) a-=256;
if (b>127) b-=256;
// lab to xyz
p = (l/2.55 + 16) / 116.0;
cx = pow( p + a * 0.002, 3);
cy = pow( p, 3);
cz = pow( p - b * 0.005, 3);
// white point
cx*=0.95047;
//cy*=1.000;
cz*=1.0883;
// xyz to rgb
cr = 3.240479 * cx - 1.537150 * cy - 0.498535 * cz;
cg = -0.969256 * cx + 1.875992 * cy + 0.041556 * cz;
cb = 0.055648 * cx - 0.204043 * cy + 1.057311 * cz;
if ( cr > 0.00304 ) cr = 1.055 * pow(cr,0.41667) - 0.055;
else cr = 12.92 * cr;
if ( cg > 0.00304 ) cg = 1.055 * pow(cg,0.41667) - 0.055;
else cg = 12.92 * cg;
if ( cb > 0.00304 ) cb = 1.055 * pow(cb,0.41667) - 0.055;
else cb = 12.92 * cb;
c.rgbRed =(BYTE)max(0,min(255,(int)(cr*255)));
c.rgbGreen=(BYTE)max(0,min(255,(int)(cg*255)));
c.rgbBlue =(BYTE)max(0,min(255,(int)(cb*255)));
SetPixelColor(xi,yi,c);
#if CXIMAGE_SUPPORT_ALPHA
if (samplesperpixel==4) AlphaSet(xi,yi,bits[bitsoffset+3]);
#endif //CXIMAGE_SUPPORT_ALPHA
ii++;
xi++;
if (xi>=(int)width){
yi--;
xi=0;
}
}
}
}
}
free(bits);
if (bits16) free(bits16);
#ifdef FIX_16BPP_DARKIMG
if (row_shifts && (samplesperpixel == 1) && (bitspersample==16) && !BIG_palette) {
// 1. calculate maximum necessary shift
int min_row_shift = 8;
for( y=0; y<height; y++ ) {
if (min_row_shift > row_shifts[y]) min_row_shift = row_shifts[y];
}
// 2. for rows having less shift value, correct such rows:
for( y=0; y<height; y++ ) {
if (min_row_shift < row_shifts[y]) {
int need_shift = row_shifts[y] - min_row_shift;
BYTE* data = info.pImage + info.dwEffWidth * y;
for( x=0; x<width; x++, data++ )
*data >>= need_shift;
}
}
}
if (row_shifts) free( row_shifts );
#endif
if (tiled_image) free(tilebuf);
if (pal) free(pal);
switch(orientation){
case ORIENTATION_TOPRIGHT: /* row 0 top, col 0 rhs */
Mirror();
break;
case ORIENTATION_BOTRIGHT: /* row 0 bottom, col 0 rhs */
Flip();
Mirror();
break;
case ORIENTATION_BOTLEFT: /* row 0 bottom, col 0 lhs */
Flip();
break;
case ORIENTATION_LEFTTOP: /* row 0 lhs, col 0 top */
RotateRight();
Mirror();
break;
case ORIENTATION_RIGHTTOP: /* row 0 rhs, col 0 top */
RotateLeft();
break;
case ORIENTATION_RIGHTBOT: /* row 0 rhs, col 0 bottom */
RotateLeft();
Mirror();
break;
case ORIENTATION_LEFTBOT: /* row 0 lhs, col 0 bottom */
RotateRight();
break;
}
}
} cx_catch {
if (strcmp(message,"")) strncpy(info.szLastError,message,255);
if (m_tif) TIFFClose(m_tif);
if (info.nEscape == -1 && info.dwType == CXIMAGE_FORMAT_TIF) return true;
return false;
}
TIFFClose(m_tif);
return true;
}
////////////////////////////////////////////////////////////////////////////////
#endif //CXIMAGE_SUPPORT_DECODE
////////////////////////////////////////////////////////////////////////////////
#if CXIMAGE_SUPPORT_ENCODE
////////////////////////////////////////////////////////////////////////////////
bool CxImageTIF::Encode(CxFile * hFile, bool bAppend)
{
cx_try
{
if (hFile==NULL) cx_throw(CXIMAGE_ERR_NOFILE);
if (pDib==NULL) cx_throw(CXIMAGE_ERR_NOIMAGE);
// <RJ> replaced "w+b" with "a", to append an image directly on an existing file
if (m_tif2==NULL) m_tif2=_TIFFOpenEx(hFile, "a");
if (m_tif2==NULL) cx_throw("initialization fail");
if (bAppend || m_pages) m_multipage=true;
m_pages++;
if (!EncodeBody(m_tif2,m_multipage,m_pages,m_pages)) cx_throw("Error saving TIFF file");
if (bAppend) {
if (!TIFFWriteDirectory(m_tif2)) cx_throw("Error saving TIFF directory");
}
} cx_catch {
if (strcmp(message,"")) strncpy(info.szLastError,message,255);
if (m_tif2){
TIFFClose(m_tif2);
m_tif2=NULL;
m_multipage=false;
m_pages=0;
}
return false;
}
if (!bAppend){
TIFFClose(m_tif2);
m_tif2=NULL;
m_multipage=false;
m_pages=0;
}
return true;
}
////////////////////////////////////////////////////////////////////////////////
// Thanks to Abe <God(dot)bless(at)marihuana(dot)com>
bool CxImageTIF::Encode(CxFile * hFile, CxImage ** pImages, int pagecount)
{
cx_try
{
if (hFile==NULL) cx_throw("invalid file pointer");
if (pImages==NULL || pagecount<=0) cx_throw("multipage TIFF, no images!");
int i;
for (i=0; i<pagecount; i++){
if (pImages[i]==NULL)
cx_throw("Bad image pointer");
if (!(pImages[i]->IsValid()))
cx_throw("Empty image");
}
CxImageTIF ghost;
for (i=0; i<pagecount; i++){
ghost.Ghost(pImages[i]);
if (!ghost.Encode(hFile,true)) cx_throw("Error saving TIFF file");
}
} cx_catch {
if (strcmp(message,"")) strncpy(info.szLastError,message,255);
return false;
}
return true;
}
////////////////////////////////////////////////////////////////////////////////
bool CxImageTIF::EncodeBody(TIFF *m_tif, bool multipage, int page, int pagecount)
{
uint32 height=head.biHeight;
uint32 width=head.biWidth;
uint16 bitcount=head.biBitCount;
uint16 bitspersample;
uint16 samplesperpixel;
uint16 photometric=0;
uint16 compression;
// uint16 pitch;
// int line;
uint32 x, y;
samplesperpixel = ((bitcount == 24) || (bitcount == 32)) ? (BYTE)3 : (BYTE)1;
#if CXIMAGE_SUPPORT_ALPHA
if (bitcount==24 && AlphaIsValid()) { bitcount=32; samplesperpixel=4; }
#endif //CXIMAGE_SUPPORT_ALPHA
bitspersample = bitcount / samplesperpixel;
//set the PHOTOMETRIC tag
RGBQUAD *rgb = GetPalette();
switch (bitcount) {
case 1:
if (CompareColors(&rgb[0],&rgb[1])<0) {
/* <abe> some viewers do not handle PHOTOMETRIC_MINISBLACK:
* let's transform the image in PHOTOMETRIC_MINISWHITE
*/
//invert the colors
RGBQUAD tempRGB=GetPaletteColor(0);
SetPaletteColor(0,GetPaletteColor(1));
SetPaletteColor(1,tempRGB);
//invert the pixels
BYTE *iSrc=info.pImage;
for (unsigned long i=0;i<head.biSizeImage;i++){
*iSrc=(BYTE)~(*(iSrc));
iSrc++;
}
photometric = PHOTOMETRIC_MINISWHITE;
//photometric = PHOTOMETRIC_MINISBLACK;
} else {
photometric = PHOTOMETRIC_MINISWHITE;
}
break;
case 4: // Check if the DIB has a color or a greyscale palette
case 8:
photometric = PHOTOMETRIC_MINISBLACK; //default to gray scale
for (x = 0; x < head.biClrUsed; x++) {
if ((rgb->rgbRed != x)||(rgb->rgbRed != rgb->rgbGreen)||(rgb->rgbRed != rgb->rgbBlue)){
photometric = PHOTOMETRIC_PALETTE;
break;
}
rgb++;
}
break;
case 24:
case 32:
photometric = PHOTOMETRIC_RGB;
break;
}
#if CXIMAGE_SUPPORT_ALPHA
if (AlphaIsValid() && bitcount==8) samplesperpixel=2; //8bpp + alpha layer
#endif //CXIMAGE_SUPPORT_ALPHA
// line = CalculateLine(width, bitspersample * samplesperpixel);
// pitch = (uint16)CalculatePitch(line);
//prepare the palette struct
RGBQUAD pal[256];
if (GetPalette()){
BYTE b;
memcpy(pal,GetPalette(),GetPaletteSize());
for(WORD a=0;a<head.biClrUsed;a++){ //swap blue and red components
b=pal[a].rgbBlue; pal[a].rgbBlue=pal[a].rgbRed; pal[a].rgbRed=b;
}
}
// handle standard width/height/bpp stuff
TIFFSetField(m_tif, TIFFTAG_IMAGEWIDTH, width);
TIFFSetField(m_tif, TIFFTAG_IMAGELENGTH, height);
TIFFSetField(m_tif, TIFFTAG_SAMPLESPERPIXEL, samplesperpixel);
TIFFSetField(m_tif, TIFFTAG_BITSPERSAMPLE, bitspersample);
TIFFSetField(m_tif, TIFFTAG_PHOTOMETRIC, photometric);
TIFFSetField(m_tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG); // single image plane
TIFFSetField(m_tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
uint32 rowsperstrip = TIFFDefaultStripSize(m_tif, (uint32) -1); //<REC> gives better compression
TIFFSetField(m_tif, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
// handle metrics
TIFFSetField(m_tif, TIFFTAG_RESOLUTIONUNIT, RESUNIT_INCH);
TIFFSetField(m_tif, TIFFTAG_XRESOLUTION, (float)info.xDPI);
TIFFSetField(m_tif, TIFFTAG_YRESOLUTION, (float)info.yDPI);
// TIFFSetField(m_tif, TIFFTAG_XPOSITION, (float)info.xOffset);
// TIFFSetField(m_tif, TIFFTAG_YPOSITION, (float)info.yOffset);
// multi-paging - Thanks to Abe <God(dot)bless(at)marihuana(dot)com>
if (multipage)
{
char page_number[20];
sprintf(page_number, "Page %d", page);
TIFFSetField(m_tif, TIFFTAG_SUBFILETYPE, FILETYPE_PAGE);
TIFFSetField(m_tif, TIFFTAG_PAGENUMBER, page,pagecount);
TIFFSetField(m_tif, TIFFTAG_PAGENAME, page_number);
} else {
TIFFSetField(m_tif, TIFFTAG_SUBFILETYPE, 0);
}
// palettes (image colormaps are automatically scaled to 16-bits)
if (photometric == PHOTOMETRIC_PALETTE) {
uint16 *r, *g, *b;
r = (uint16 *) _TIFFmalloc(sizeof(uint16) * 3 * 256);
g = r + 256;
b = g + 256;
for (int i = 255; i >= 0; i--) {
b[i] = (uint16)SCALE((uint16)pal[i].rgbRed);
g[i] = (uint16)SCALE((uint16)pal[i].rgbGreen);
r[i] = (uint16)SCALE((uint16)pal[i].rgbBlue);
}
TIFFSetField(m_tif, TIFFTAG_COLORMAP, r, g, b);
_TIFFfree(r);
}
// compression
if (GetCodecOption(CXIMAGE_FORMAT_TIF)) {
compression = (WORD)GetCodecOption(CXIMAGE_FORMAT_TIF);
} else {
switch (bitcount) {
case 1 :
compression = COMPRESSION_CCITTFAX4;
break;
case 4 :
case 8 :
compression = COMPRESSION_LZW;
break;
case 24 :
case 32 :
compression = COMPRESSION_JPEG;
break;
default :
compression = COMPRESSION_NONE;
break;
}
}
TIFFSetField(m_tif, TIFFTAG_COMPRESSION, compression);
switch (compression) {
case COMPRESSION_JPEG:
TIFFSetField(m_tif, TIFFTAG_JPEGQUALITY, GetJpegQuality());
TIFFSetField(m_tif, TIFFTAG_ROWSPERSTRIP, ((7+rowsperstrip)>>3)<<3);
break;
case COMPRESSION_LZW:
if (bitcount>=8) TIFFSetField(m_tif, TIFFTAG_PREDICTOR, 2);
break;
}
// read the DIB lines from bottom to top and save them in the TIF
BYTE *bits;
switch(bitcount) {
case 1 :
case 4 :
case 8 :
{
if (samplesperpixel==1){
bits = (BYTE*)malloc(info.dwEffWidth);
if (!bits) return false;
for (y = 0; y < height; y++) {
memcpy(bits,info.pImage + (height - y - 1)*info.dwEffWidth,info.dwEffWidth);
if (TIFFWriteScanline(m_tif,bits, y, 0)==-1){
free(bits);
return false;
}
}
free(bits);
}
#if CXIMAGE_SUPPORT_ALPHA
else { //8bpp + alpha layer
bits = (BYTE*)malloc(2*width);
if (!bits) return false;
for (y = 0; y < height; y++) {
for (x=0;x<width;x++){
bits[2*x]=BlindGetPixelIndex(x,height - y - 1);
bits[2*x+1]=AlphaGet(x,height - y - 1);
}
if (TIFFWriteScanline(m_tif,bits, y, 0)==-1) {
free(bits);
return false;
}
}
free(bits);
}
#endif //CXIMAGE_SUPPORT_ALPHA
break;
}
case 24:
{
BYTE *buffer = (BYTE *)malloc(info.dwEffWidth);
if (!buffer) return false;
for (y = 0; y < height; y++) {
// get a pointer to the scanline
memcpy(buffer, info.pImage + (height - y - 1)*info.dwEffWidth, info.dwEffWidth);
// TIFFs store color data RGB instead of BGR
BYTE *pBuf = buffer;
for (x = 0; x < width; x++) {
BYTE tmp = pBuf[0];
pBuf[0] = pBuf[2];
pBuf[2] = tmp;
pBuf += 3;
}
// write the scanline to disc
if (TIFFWriteScanline(m_tif, buffer, y, 0)==-1){
free(buffer);
return false;
}
}
free(buffer);
break;
}
case 32 :
{
#if CXIMAGE_SUPPORT_ALPHA
BYTE *buffer = (BYTE *)malloc((info.dwEffWidth*4)/3);
if (!buffer) return false;
for (y = 0; y < height; y++) {
// get a pointer to the scanline
memcpy(buffer, info.pImage + (height - y - 1)*info.dwEffWidth, info.dwEffWidth);
// TIFFs store color data RGB instead of BGR
BYTE *pSrc = buffer + 3 * width;
BYTE *pDst = buffer + 4 * width;
for (x = 0; x < width; x++) {
pDst-=4;
pSrc-=3;
pDst[3] = AlphaGet(width-x-1,height-y-1);
pDst[2] = pSrc[0];
pDst[1] = pSrc[1];
pDst[0] = pSrc[2];
}
// write the scanline to disc
if (TIFFWriteScanline(m_tif, buffer, y, 0)==-1){
free(buffer);
return false;
}
}
free(buffer);
#endif //CXIMAGE_SUPPORT_ALPHA
break;
}
}
return true;
}
////////////////////////////////////////////////////////////////////////////////
#endif // CXIMAGE_SUPPORT_ENCODE
////////////////////////////////////////////////////////////////////////////////
void CxImageTIF::TileToStrip(uint8* out, uint8* in, uint32 rows, uint32 cols, int outskew, int inskew)
{
while (rows-- > 0) {
uint32 j = cols;
while (j-- > 0)
*out++ = *in++;
out += outskew;
in += inskew;
}
}
////////////////////////////////////////////////////////////////////////////////
TIFF* CxImageTIF::TIFFOpenEx(CxFile * hFile)
{
if (hFile) return _TIFFOpenEx(hFile, "rb");
return NULL;
}
////////////////////////////////////////////////////////////////////////////////
void CxImageTIF::TIFFCloseEx(TIFF* tif)
{
if (tif) TIFFClose(tif);
}
////////////////////////////////////////////////////////////////////////////////
void CxImageTIF::MoveBits( BYTE* dest, BYTE* from, int count, int bpp )
{ int offbits = 0;
uint16 w;
uint32 d;
if (bpp <= 8) {
while (count-- > 0) {
if (offbits + bpp <= 8)
w = *from >> (8 - offbits - bpp);
else {
w = *from++ << (offbits + bpp - 8);
w |= *from >> (16 - offbits - bpp);
}
offbits += bpp;
if (offbits >= 8) {
offbits -= 8;
if (offbits == 0) from++;
}
*dest++ = (BYTE)w & ((1 << bpp)-1);
}
} else if (bpp < 16) {
while (count-- > 0) {
d = (*from << 24) | (from[1]<<16) | (from[2]<<8) | from[3];
d >>= (24 - offbits);
*dest++ = (BYTE) ( d );
offbits += bpp;
while (offbits >= 8) {
from++;
offbits -= 8;
}
}
} else if (bpp < 32) {
while (count-- > 0) {
d = (*from << 24) | (from[1]<<16) | (from[2]<<8) | from[3];
//d = *(uint32*)from;
*dest++ = (BYTE) ( d >> (offbits + bpp - 8) );
offbits += bpp;
while (offbits >= 8) {
from++;
offbits -= 8;
}
}
} else {
while (count-- > 0) {
d = *(uint32*)from;
*dest++ = (BYTE) (d >> 24);
from += 4;
}
}
}
////////////////////////////////////////////////////////////////////////////////
void CxImageTIF::MoveBitsPal( BYTE* dest, BYTE*from, int count, int bpp, RGBQUAD* pal )
{ int offbits = 0;
uint32 d;
uint16 palidx;
while (count-- > 0) {
d = (*from << 24) | ( *( from + 1 ) << 16 )
| ( *( from + 2 ) << 8 )
| ( *( from + 3 ) );
palidx = (uint16) (d >> (32 - offbits - bpp));
if (bpp < 16) {
palidx <<= 16-bpp;
palidx = (palidx >> 8) | (palidx <<8);
palidx >>= 16-bpp;
} else palidx = (palidx >> 8) | (palidx << 8);
*dest++ = pal[palidx].rgbBlue;
*dest++ = pal[palidx].rgbGreen;
*dest++ = pal[palidx].rgbRed;
offbits += bpp;
while (offbits >= 8) {
from++;
offbits -= 8;
}
}
}
////////////////////////////////////////////////////////////////////////////////
#endif // CXIMAGE_SUPPORT_TIF