// Save a TIFF image
bool fxsaveTIF(FXStream& store,const FXColor* data,FXint width,FXint height,FXushort codec) {
tiff_store_handle s_handle;
long rows_per_strip,line;
const TIFFCodec* coder;
TIFF *image;
// Must make sense
if(!data || width<=0 || height<=0) return false;
// Correct for unsupported codecs
coder=TIFFFindCODEC(codec);
if(coder==NULL) codec=COMPRESSION_PACKBITS;
// Due to the infamous UNISYS patent, we can read LZW TIFF's but not
// write them back as that would require the LZW compression algorithm!
if(codec==COMPRESSION_LZW) codec=COMPRESSION_PACKBITS;
//FXTRACE((100,"fxsaveTIF: codec=%d\n",codec));
// Set error/warning handlers
TIFFSetErrorHandler(fxerrorhandler);
TIFFSetWarningHandler(fxwarninghandler);
// Initialize
s_handle.store=&store;
s_handle.begin=store.position();
s_handle.end=store.position();
s_handle.error=FALSE;
// Open image
image=TIFFClientOpen("tiff","w",(thandle_t)&s_handle,tif_dummy_read_store,tif_write_store,tif_seek_store,tif_close_store,tif_size_store,tif_map_store,tif_unmap_store);
if(!image) return FALSE;
// Size of a strip is 16kb
rows_per_strip=16*1024/width;
if(rows_per_strip<1) rows_per_strip=1;
// Set fields
TIFFSetField(image,TIFFTAG_IMAGEWIDTH,width);
TIFFSetField(image,TIFFTAG_IMAGELENGTH,height);
TIFFSetField(image,TIFFTAG_COMPRESSION,codec);
TIFFSetField(image,TIFFTAG_ORIENTATION,ORIENTATION_TOPLEFT);
TIFFSetField(image,TIFFTAG_ROWSPERSTRIP,rows_per_strip);
TIFFSetField(image,TIFFTAG_BITSPERSAMPLE,8);
TIFFSetField(image,TIFFTAG_SAMPLESPERPIXEL,4);
TIFFSetField(image,TIFFTAG_PLANARCONFIG,1);
TIFFSetField(image,TIFFTAG_PHOTOMETRIC,PHOTOMETRIC_RGB);
// Dump each line
for(line=0; line<height; line++) {
if(TIFFWriteScanline(image,(void*)data,line,1)!=1 || s_handle.error) {
TIFFClose(image);
return false;
}
data+=width;
}
TIFFClose(image);
return true;
}
// Load image from stream
bool fxloadBMP(FXStream& store,FXColor*& data,FXint& width,FXint& height){
FXint biXPelsPerMeter,biYPelsPerMeter,biClrUsed,biClrImportant,biCompression,biSize;
FXint biWidth,biHeight,biSizeImage,bfOffBits,bfSize,i,j,x,y,maxpixels,colormaplen,padw,pad;
FXushort bfType,bfReserved,biBitCount,biPlanes,rgb16;
FXColor colormap[256],*pp;
FXuchar padding[3],c1,c2;
FXlong base,header;
bool swap;
bool ok=false;
// Null out
data=NULL;
width=0;
height=0;
// Start of bitmap file header
base=store.position();
// Bitmaps are little-endian
swap=store.swapBytes();
store.setBigEndian(FALSE);
// Get size and offset
store >> bfType;
store >> bfSize;
store >> bfReserved;
store >> bfReserved;
store >> bfOffBits;
// Check signature
if(bfType!=0x4d42) goto x;
// Start of bitmap info header
header=store.position();
// Read bitmap info header
store >> biSize;
if(biSize==OS2_OLD){ // Old format
store >> bfReserved; biWidth=bfReserved;
store >> bfReserved; biHeight=bfReserved;
store >> biPlanes;
store >> biBitCount;
biCompression = BIH_RGB;
biSizeImage = (((biPlanes*biBitCount*biWidth)+31)/32)*4*biHeight;
biXPelsPerMeter = 0;
biYPelsPerMeter = 0;
biClrUsed = 0;
biClrImportant = 0;
}
// Load a TIFF image
FXbool fxloadTIF(FXStream& store,FXColor*& data,FXint& width,FXint& height,FXushort& codec){
tiff_store_handle s_handle;
FXuval size,s;
// Null out
data=NULL;
width=0;
height=0;
// Set error/warning handlers
TIFFSetErrorHandler(NULL);
TIFFSetWarningHandler(NULL);
// Initialize
s_handle.store=&store;
s_handle.begin=store.position();
s_handle.end=store.position();
FXTRACE((100,"fxloadTIF\n"));
// Open image
TIFF* image=TIFFClientOpen("tiff","rm",(thandle_t)&s_handle,tif_read_store,tif_write_store,tif_seek_store,tif_close_store,tif_size_store,NULL,NULL);
if(image){
// Get sizes
TIFFGetField(image,TIFFTAG_IMAGEWIDTH,&width);
TIFFGetField(image,TIFFTAG_IMAGELENGTH,&height);
TIFFGetField(image,TIFFTAG_COMPRESSION,&codec);
FXTRACE((100,"fxloadTIF: width=%d height=%d codec=%d\n",width,height,codec));
// Make room for data
size=width*height;
if(allocElms(data,size)){
if(TIFFReadRGBAImageOriented(image,width,height,data,ORIENTATION_TOPLEFT,0)){
for(s=0; s<size; s++){
data[s]=((data[s]&0xff)<<16)|((data[s]&0xff0000)>>16)|(data[s]&0xff00)|(data[s]&0xff000000);
}
TIFFClose(image);
return true;
}
freeElms(data);
}
TIFFClose(image);
}
return false;
}
// Load a JPEG image
FXbool fxloadJP2(FXStream& store,FXColor*& data,FXint& width,FXint& height,FXint&){
register FXint x,y,cw,rsh,gsh,bsh,ash,rof,gof,bof,aof;
register FXuchar r,g,b,a;
FXbool swap=store.swapBytes();
FXlong pos=store.position();
FXbool result=false;
FXuint box[4];
FXlong boxsize;
FXuint size;
FXuchar *ptr;
// Null out
data=NULL;
width=0;
height=0;
// Switch big-endian to grab header
store.setBigEndian(true);
// Grab signature
store.load(box,3);
// Check signature, bail quickly if no match
if(box[0]==12 && box[1]==BOX_JP && box[2]==SIGNATURE){
// Figure size
store.position(0,FXFromEnd);
size=store.position()-pos;
store.position(pos);
FXTRACE((90,"fxloadJP2: file size=%d\n",size));
// Allocate chunk for file data
if(allocElms(ptr,size)){
// Load entire file
store.load(ptr,size);
// Create decompressor
opj_dinfo_t *decompressor=opj_create_decompress(CODEC_JP2);
if(decompressor){
opj_dparameters_t parameters;
opj_event_mgr_t event_mgr;
opj_cio_t *cio=NULL;
opj_image_t *image=NULL;
// Set up callbacks
event_mgr.error_handler=j2k_error_callback;
event_mgr.warning_handler=j2k_warning_callback;
event_mgr.info_handler=j2k_info_callback;
// Set event manager
opj_set_event_mgr((opj_common_ptr)decompressor,&event_mgr,NULL);
// Initialize decompression parameters
opj_set_default_decoder_parameters(¶meters);
// Setup the decoder decoding parameters using user parameters
opj_setup_decoder(decompressor,¶meters);
// Open a byte stream */
cio=opj_cio_open((opj_common_ptr)decompressor,ptr,size);
if(cio){
// Decode the stream and fill the image structure
image=opj_decode(decompressor,cio);
if(image){
// Image size
width=image->x1-image->x0;
height=image->y1-image->y0;
FXTRACE((90,"fxloadJP2: width=%d height=%d numcomps=%d color_space=%d\n",width,height,image->numcomps,image->color_space));
// Only support GREY, RGB, and RGBA
if(((image->numcomps==1) && (image->color_space==CLRSPC_GRAY)) || ((image->numcomps==3 || image->numcomps==4) && (image->color_space==CLRSPC_SRGB))){
// Allocate image data
if(allocElms(data,width*height)){
rof=gof=bof=aof=rsh=gsh=bsh=ash=0;
switch(image->numcomps){
case 1:
if(image->comps[0].sgnd) gof=1<<(image->comps[0].prec-1);
gsh=image->comps[0].prec-8;
cw=image->comps[0].w;
for(y=0; y<height; ++y){
for(x=0; x<width; ++x){
g=(image->comps[0].data[y*cw+x]+gof)>>gsh;
data[y*width+x]=FXRGB(g,g,g);
}
}
break;
case 3:
if(image->comps[0].sgnd) rof=1<<(image->comps[0].prec-1);
if(image->comps[1].sgnd) gof=1<<(image->comps[1].prec-1);
if(image->comps[2].sgnd) bof=1<<(image->comps[2].prec-1);
rsh=image->comps[0].prec-8;
gsh=image->comps[1].prec-8;
bsh=image->comps[2].prec-8;
cw=image->comps[0].w;
for(y=0; y<height; ++y){
for(x=0; x<width; ++x){
r=(image->comps[0].data[y*cw+x]+rof)>>rsh;
g=(image->comps[1].data[y*cw+x]+gof)>>gsh;
b=(image->comps[2].data[y*cw+x]+bof)>>bsh;
data[y*width+x]=FXRGB(r,g,b);
}
}
break;
default:
if(image->comps[0].sgnd) rof=1<<(image->comps[0].prec-1);
if(image->comps[1].sgnd) gof=1<<(image->comps[1].prec-1);
if(image->comps[2].sgnd) bof=1<<(image->comps[2].prec-1);
if(image->comps[3].sgnd) aof=1<<(image->comps[3].prec-1);
rsh=image->comps[0].prec-8;
gsh=image->comps[1].prec-8;
bsh=image->comps[2].prec-8;
ash=image->comps[3].prec-8;
cw=image->comps[0].w;
for(y=0; y<height; ++y){
for(x=0; x<width; ++x){
r=(image->comps[0].data[y*cw+x]+rof)>>rsh;
g=(image->comps[1].data[y*cw+x]+gof)>>gsh;
b=(image->comps[2].data[y*cw+x]+bof)>>bsh;
a=(image->comps[3].data[y*cw+x]+aof)>>ash;
data[y*width+x]=FXRGBA(r,g,b,a);
}
}
break;
}
result=true;
}
}
opj_image_destroy(image);
}
opj_cio_close(cio);
}
opj_destroy_decompress(decompressor);
}
freeElms(ptr);
}
}
// Check if stream contains a JPG
FXbool fxcheckJP2(FXStream& store){
FXuchar ss[12];
store.load(ss,12);
store.position(-12,FXFromCurrent);
return ss[0]==0 && ss[1]==0 && ss[2]==0 && ss[3]==12 && ss[4]=='j' && ss[5]=='P' && ss[6]==' ' && ss[7]==' ' && ss[8]==0x0D && ss[9]==0x0A && ss[10]==0x87 && ss[11]==0x0A;
}
// Check if stream contains a PNG
bool fxcheckPNG(FXStream& store){
FXuchar signature[8];
store.load(signature,8);
store.position(-8,FXFromCurrent);
return signature[0]==137 && signature[1]==80 && signature[2]==78 && signature[3]==71 && signature[4]==13 && signature[5]==10 && signature[6]==26 && signature[7]==10;
}
// Load a TIFF image
bool fxloadTIF(FXStream& store,FXColor*& data,FXint& width,FXint& height,FXushort& codec) {
tiff_store_handle s_handle;
TIFFRGBAImage img;
TIFF *image;
char emsg[1024];
register FXColor *up,*dn,t;
register FXint i;
register long size;
// Null out
data=NULL;
width=0;
height=0;
// Set error/warning handlers
TIFFSetErrorHandler(fxerrorhandler);
TIFFSetWarningHandler(fxwarninghandler);
// Initialize
s_handle.store=&store;
s_handle.begin=store.position();
s_handle.end=store.position();
s_handle.error=FALSE;
// Open image
image=TIFFClientOpen("tiff","rm",(thandle_t)&s_handle,tif_read_store,tif_write_store,tif_seek_store,tif_close_store,tif_size_store,tif_map_store,tif_unmap_store);
if(!image) return false;
// We try to remember the codec for later when we save the image back out...
TIFFGetField(image,TIFFTAG_COMPRESSION,&codec);
//FXTRACE((100,"fxloadTIF: codec=%d\n",codec));
// FIXME TIFFRGBAImage{Begin,Get,End} is too broken!
if(TIFFRGBAImageBegin(&img,image,0,emsg)!=1) {
TIFFClose(image);
return false;
}
//FXTRACE((1,"fxloadTIF: width=%u height=%u alpha=%d bitspersample=%u samplesperpixel=%u orientation=%u photometric=%u\n",img.width,img.height,img.alpha,img.bitspersample,img.samplesperpixel,img.orientation,img.photometric));
// Make room for data
size=img.width*img.height;
if(!FXMALLOC(&data,FXColor,size)) {
TIFFClose(image);
return false;
}
// Get the pixels
if(TIFFRGBAImageGet(&img,(uint32*)data,img.width,img.height)!=1) {
FXFREE(&data);
TIFFClose(image);
return false;
}
// If we got this far, we have the data;
// nothing can go wrong from here on.
width=(FXint)img.width;
height=(FXint)img.height;
// Maybe flip image upside down?
if(img.orientation==ORIENTATION_TOPLEFT) {
for(up=data,dn=data+(height-1)*width; up<dn; up+=width,dn-=width) {
for(i=0; i<width; i++) {
t=up[i];
up[i]=dn[i];
dn[i]=t;
}
}
}
TIFFRGBAImageEnd(&img);
TIFFClose(image);
return true;
}
// Check if stream contains a TIFF
bool fxcheckTIF(FXStream& store) {
FXuchar signature[2];
store.load(signature,2);
store.position(-2,FXFromCurrent);
return (signature[0]==0x4d && signature[1]==0x4d) || (signature[0]==0x49 && signature[1]==0x49);
}
// Load image from stream
bool fxloadGIF(FXStream& store,FXColor*& data,FXint& width,FXint& height){
const FXint Yinit[4]={0,4,2,1};
const FXint Yinc[4]={8,8,4,2};
FXint imwidth,imheight,interlace,ncolors,npixels,maxpixels,i;
FXuchar c1,c2,c3,sbsize,flags,alpha,*ptr,*buf,*pix;
FXColor colormap[256];
FXint BitOffset; // Bit Offset of next code
FXint ByteOffset; // Byte offset of next code
FXint XC,YC; // Output X and Y coords of current pixel
FXint Pass; // Used by output routine if interlaced pic
FXint OutCount; // Decompressor output 'stack count'
FXint CodeSize; // Code size, read from GIF header
FXint InitCodeSize; // Starting code size, used during Clear
FXint Code; // Value returned by ReadCode
FXint MaxCode; // limiting value for current code size
FXint ClearCode; // GIF clear code
FXint EOFCode; // GIF end-of-information code
FXint CurCode,OldCode,InCode; // Decompressor variables
FXint FirstFree; // First free code, generated per GIF spec
FXint FreeCode; // Decompressor,next free slot in hash table
FXint FinChar; // Decompressor variable
FXint BitMask; // AND mask for data size
FXint ReadMask; // Code AND mask for current code size
FXint Prefix[4096]; // The hash table used by the decompressor
FXint Suffix[4096]; // The hash table used by the decompressor
FXint OutCode[4097]; // An output array used by the decompressor
// Null out
data=NULL;
width=0;
height=0;
// Load signature
store >> c1;
store >> c2;
store >> c3;
// Check signature
if(c1!=TAG_SIG1 || c2!=TAG_SIG2 || c3!=TAG_SIG3) return false;
// Load version
store >> c1;
store >> c2;
store >> c3;
// Check version
if(c1!=TAG_VER || (c2!=TAG_OLD && c2!=TAG_NEW) || c3!=TAG_SUF) return false;
// Get screen descriptor
store >> c1 >> c2; // Skip screen width
store >> c1 >> c2; // Skip screen height
store >> flags; // Get flags
store >> alpha; // Background
store >> c2; // Skip aspect ratio
// Determine number of colors
ncolors=2<<(flags&7);
BitMask=ncolors-1;
// If no colormap, spec says first 2 colors are black and white
colormap[0]=FXRGB(0,0,0);
colormap[1]=FXRGB(255,255,255);
// Read global map if there is one
if(flags&0x80){
for(i=0; i<ncolors; i++){
store >> ((FXuchar*)(colormap+i))[0]; // Blue
store >> ((FXuchar*)(colormap+i))[1]; // Green
store >> ((FXuchar*)(colormap+i))[2]; // Red
((FXuchar*)(colormap+i))[3]=255; // Alpha
}
}
// Process it
while(1){
store >> c1;
if(c1==TAG_EXTENSION){
// Read extension code
store >> c2;
// Graphic Control Extension
if(c2==TAG_GRAPHIC){
store >> sbsize;
if(sbsize!=TAG_GRAPHICSIZE) return false;
store >> flags; // Flags
store >> c3 >> c3; // Delay time
store >> alpha; // Alpha color index; we suspect alpha<ncolors not always true...
store >> c3;
if(flags&1){ // Clear alpha channel of alpha color
colormap[alpha]&=FXRGBA(255,255,255,0); // Clear the alpha channel but keep the RGB
}
continue;
}
// Other extension
do{
store >> sbsize;
store.position(store.position()+sbsize);
}
while(sbsize>0 && !store.eof()); // FIXME this logic still flawed
continue;
}
// Save a TIFF image
FXbool fxsaveTIF(FXStream& store,const FXColor* data,FXint width,FXint height,FXushort codec){
register FXbool result=false;
// Must make sense
if(data && 0<width && 0<height){
// Correct for unsupported codecs
const TIFFCodec* coder=TIFFFindCODEC(codec);
if(coder==NULL) codec=COMPRESSION_PACKBITS;
// Due to the infamous UNISYS patent, we can read LZW TIFF's but not
// write them back as that would require the LZW compression algorithm!
if(codec==COMPRESSION_LZW) codec=COMPRESSION_PACKBITS;
FXTRACE((100,"fxsaveTIF: codec=%d\n",codec));
// Set error/warning handlers
TIFFSetErrorHandler(NULL);
TIFFSetWarningHandler(NULL);
// Initialize
tiff_store_handle s_handle;
s_handle.store=&store;
s_handle.begin=store.position();
s_handle.end=store.position();
// Open image
TIFF* image=TIFFClientOpen("tiff","w",(thandle_t)&s_handle,tif_dummy_read_store,tif_write_store,tif_seek_store,tif_close_store,tif_size_store,NULL,NULL);
if(image){
FXColor *buffer=NULL;
// Size of a strip is 16kb
FXint rows_per_strip=16*1024/width;
if(rows_per_strip<1) rows_per_strip=1;
// Set fields
TIFFSetField(image,TIFFTAG_IMAGEWIDTH,width);
TIFFSetField(image,TIFFTAG_IMAGELENGTH,height);
TIFFSetField(image,TIFFTAG_COMPRESSION,codec);
TIFFSetField(image,TIFFTAG_ORIENTATION,ORIENTATION_TOPLEFT);
TIFFSetField(image,TIFFTAG_ROWSPERSTRIP,rows_per_strip);
TIFFSetField(image,TIFFTAG_BITSPERSAMPLE,8);
TIFFSetField(image,TIFFTAG_SAMPLESPERPIXEL,4);
TIFFSetField(image,TIFFTAG_PLANARCONFIG,PLANARCONFIG_CONTIG);
TIFFSetField(image,TIFFTAG_PHOTOMETRIC,PHOTOMETRIC_RGB);
// Allocate scanline buffer
if(allocElms(buffer,width)){
// Dump each line
for(FXint y=0; y<height; data+=width,y++){
// Convert byte order
for(FXint x=0; x<width; x++){
buffer[x]=FXREDVAL(data[x]) | FXGREENVAL(data[x])<<8 | FXBLUEVAL(data[x])<<16 | FXALPHAVAL(data[x])<<24;
}
// Write scanline
if(TIFFWriteScanline(image,buffer,y,1)!=1) goto x;
}
// All done
result=true;
// Delete scanline buffer
x: freeElms(buffer);
}
// Close image
TIFFClose(image);
}
}
return result;
}
// Load GEO TIFF
FXbool fxloadTIF__(FXStream& store,FXColor*& data,FXint& width,FXint& height,FXushort& codec){
tiff_store_handle s_handle;
FXbool result=false;
TIFF* image;
// Null out
data=NULL;
width=0;
height=0;
codec=0;
// Set error/warning handlers
TIFFSetErrorHandler(NULL);
TIFFSetWarningHandler(NULL);
// Initialize
s_handle.store=&store;
s_handle.begin=store.position();
s_handle.end=store.position();
FXTRACE((100,"fxloadGEOTIF\n"));
// Open image
if((image=TIFFClientOpen("tiff","rm",(thandle_t)&s_handle,tif_read_store,tif_write_store,tif_seek_store,tif_close_store,tif_size_store,NULL,NULL))!=NULL){
FXushort samples=0;
FXushort samplebits=0;
FXushort format=0;
FXuint scanlinesize;
FXuchar *scanline;
// Get size
TIFFGetField(image,TIFFTAG_IMAGEWIDTH,&width);
TIFFGetField(image,TIFFTAG_IMAGELENGTH,&height);
TIFFGetField(image,TIFFTAG_SAMPLESPERPIXEL,&samples);
TIFFGetField(image,TIFFTAG_BITSPERSAMPLE,&samplebits);
TIFFGetField(image,TIFFTAG_SAMPLEFORMAT,&format);
// We try to remember the codec for later when we save the image back out...
TIFFGetField(image,TIFFTAG_COMPRESSION,&codec);
// Get line size (bytes)
scanlinesize=TIFFScanlineSize(image);
// Show image configuration
FXTRACE((100,"width=%d height=%d codec=%u samples=%u samplebits=%u format=%u scanlinesize=%u\n",width,height,codec,samples,samplebits,format,scanlinesize));
// Supported formats
if((format==SAMPLEFORMAT_UINT || format==SAMPLEFORMAT_INT || format==SAMPLEFORMAT_IEEEFP) && (samples==1 || samples==3)){
// Allocate scanline buffer
if(callocElms(scanline,scanlinesize)){
// Make room for data
if(callocElms(data,width*height)){
/*
FXuint nPlanarConfig=0;
FXuint nCompressFlag=0;
FXuint nPhotometric=0;
TIFFGetField(image,TIFFTAG_PLANARCONFIG,&nPlanarConfig);
TIFFGetField(image,TIFFTAG_COMPRESSION,&nCompressFlag);
TIFFGetField(image,TIFFTAG_PHOTOMETRIC,&nPhotometric);
FXTRACE((100,"nPlanarConfig=%u\n",nPlanarConfig));
FXTRACE((100,"nCompressFlag=%u\n",nCompressFlag));
FXTRACE((100,"nPhotometric=%u\n",nPhotometric));
switch(nSampleFormat){
case SAMPLEFORMAT_UINT:
break;
case SAMPLEFORMAT_INT:
break;
case SAMPLEFORMAT_IEEEFP:
break;
case SAMPLEFORMAT_VOID:
break;
case SAMPLEFORMAT_COMPLEXINT:
break;
case SAMPLEFORMAT_COMPLEXIEEEFP:
break;
default:
break;
}
*/
// Read lines
for(FXint y=0; y<height; ++y){
TIFFReadScanline(image,scanline,y,0);
if(samples==3){
if(samplebits==8){
for(FXint x=0; x<width; ++x){
((FXuchar*)&data[y*width+x])[0]=scanline[3*x+2]; // Blue
((FXuchar*)&data[y*width+x])[1]=scanline[3*x+1]; // Green
((FXuchar*)&data[y*width+x])[2]=scanline[3*x+0]; // Red
((FXuchar*)&data[y*width+x])[3]=255; // Alpha
}
}
else if(samplebits==16){
for(FXint x=0; x<width; ++x){
((FXuchar*)&data[y*width+x])[0]=((FXushort*)scanline)[3*x+2]/257;
((FXuchar*)&data[y*width+x])[1]=((FXushort*)scanline)[3*x+1]/257;
((FXuchar*)&data[y*width+x])[2]=((FXushort*)scanline)[3*x+0]/257;
((FXuchar*)&data[y*width+x])[3]=255;
}
}
}
else{
if(samplebits==8){
for(FXint x=0; x<width; ++x){
((FXuchar*)&data[y*width+x])[0]=scanline[x]; // Blue
((FXuchar*)&data[y*width+x])[1]=scanline[x]; // Green
((FXuchar*)&data[y*width+x])[2]=scanline[x]; // Red
((FXuchar*)&data[y*width+x])[3]=255; // Alpha
}
}
else if(samplebits==16){
for(FXint x=0; x<width; ++x){
((FXuchar*)&data[y*width+x])[0]=((FXushort*)scanline)[x]/257;
((FXuchar*)&data[y*width+x])[1]=((FXushort*)scanline)[x]/257;
((FXuchar*)&data[y*width+x])[2]=((FXushort*)scanline)[x]/257;
((FXuchar*)&data[y*width+x])[3]=255;
}
}
}
}
// Got as far as this if success
result=true;
}
}
freeElms(scanline);
}
TIFFClose(image);
}
return result;
}
// Load image from stream
bool fxloadRGB(FXStream& store,FXColor*& data,FXint& width,FXint& height){
FXint i,j,c,tablen,sub,t,total;
FXuchar temp[4096],*array,storage,bpc,swap;
FXuint *starttab,*lengthtab;
FXushort magic,dimension,nchannels,w,h;
FXlong base,start;
// Null out
data=NULL;
width=0;
height=0;
// Remember swap state
swap=store.swapBytes();
store.setBigEndian(TRUE);
// Where the image format starts
base=store.position();
// Load header
store >> magic; // MAGIC (2)
store >> storage; // STORAGE (1)
store >> bpc; // BPC (1)
store >> dimension; // DIMENSION (2)
store >> w; // XSIZE (2)
store >> h; // YSIZE (2)
store >> nchannels; // ZSIZE (2)
FXTRACE((50,"fxloadRGB: magic=%d width=%d height=%d nchannels=%d dimension=%d storage=%d bpc=%d\n",magic,w,h,nchannels,dimension,storage,bpc));
// Check magic number and other parameters
if(magic==474 && nchannels==3 && bpc==1 && w>0 && h>0){
// Make room for image
if(FXMALLOC(&data,FXColor,w*h)){
// Clear
memset(data,0xff,sizeof(FXColor)*w*h);
// Skip stuff
store.position(500,FXFromCurrent);
// RLE compressed
if(storage){
tablen=h*3;
// Allocate line tables
if(FXMALLOC(&starttab,FXuint,tablen*2)){
lengthtab=&starttab[tablen];
// Read line tables
store.load(starttab,tablen);
store.load(lengthtab,tablen);
// Where the RLE chunks start
start=store.position();
// Substract this amount to get offset from chunk start
sub=start-base;
total=0;
// Fix up the line table & figure space for RLE chunks
// Intelligent RGB writers (not ours ;-)) may re-use RLE
// chunks for more than 1 line...
for(i=0; i<tablen; i++){
starttab[i]-=sub;
t=starttab[i]+lengthtab[i];
if(t>total) total=t;
}
// Make room for the compressed lines
if(FXMALLOC(&array,FXuchar,total)){
// Load all RLE chunks
store.load(array,total);
for(c=0; c<3; c++){
for(j=h-1; j>=0; j--){
expandrow(((FXuchar*)(data+j*w))+c,&array[starttab[h-1-j+c*h]]);
}
}
// Free RLE chunks
FXFREE(&array);
}
// Free line tables
FXFREE(&starttab);
}
}
// NON compressed
else{
for(c=0; c<3; c++){
for(j=h-1; j>=0; j--){
store.load(temp,w);
for(i=0; i<w; i++) ((FXuchar*)(data+j*w+i))[c]=temp[i];
}
}
}
// Set width and height
width=w;
height=h;
// Reset swap status
store.swapBytes(swap);
return TRUE;
}
}
// Reset swap status
store.swapBytes(swap);
return false;
}
// Check if stream contains a RGB
bool fxcheckRGB(FXStream& store){
FXuchar signature[2];
store.load(signature,2);
store.position(-2,FXFromCurrent);
return signature[0]==0x01 && signature[1]==0xDA;
}
// Load SUN raster image file format
bool fxloadRAS(FXStream& store,FXColor*& data,FXint& width,FXint& height){
FXuchar red[256],green[256],blue[256],*line,count,c,*p,*q,bit;
register FXint npixels,depth,linesize,x,y,i;
HEADER header;
// Null out
data=NULL;
line=NULL;
width=0;
height=0;
// Read header
header.magic=read32(store);
header.width=read32(store);
header.height=read32(store);
header.depth=read32(store);
header.length=read32(store);
header.type=read32(store);
header.maptype=read32(store);
header.maplength=read32(store);
//FXTRACE((1,"fxloadRAS: magic=%08x width=%d height=%d depth=%d length=%d type=%d maptype=%d maplength=%d\n",header.magic,header.width,header.height,header.depth,header.length,header.type,header.maptype,header.maplength));
// Check magic code
if(header.magic!=RAS_MAGIC) return false;
// Trivial reject
if(header.width<1 || header.height<1) return false;
// Bad colormap size
if(header.maplength<0 || header.maplength>768) return false;
// Verify depth options; must be 1,8,24, or 32
if(header.depth!=1 && header.depth!=8 && header.depth!=24 && header.depth!=32) return false;
// Verify supported types
if(header.type!=RT_OLD && header.type!=RT_STANDARD && header.type!=RT_BYTE_ENCODED && header.type!=RT_FORMAT_RGB) return false;
// Verify map types
if(header.maptype!=RMT_RAW && header.maptype!=RMT_NONE && header.maptype!=RMT_EQUAL_RGB) return false;
// Get size
width=header.width;
height=header.height;
depth=header.depth;
npixels=width*height;
linesize=((width*depth+15)/16)*2;
//FXTRACE((1,"fxloadRAS: header.length=%d linesize=%d 4*npixels=%d\n",header.length,linesize,4*npixels));
// Read in the colormap
if(header.maptype==RMT_EQUAL_RGB && header.maplength){
//FXTRACE((1,"fxloadRAS: RMT_EQUAL_RGB\n"));
store.load(red,header.maplength/3);
store.load(green,header.maplength/3);
store.load(blue,header.maplength/3);
}
// Skip colormap
else if(header.maptype==RMT_RAW && header.maplength){
//FXTRACE((1,"fxloadRAS: RMT_RAW\n"));
store.position(header.maplength,FXFromCurrent);
}
// Black and white
else if(header.depth==1){
//FXTRACE((1,"fxloadRAS: 1 bit\n"));
red[0]=green[0]=blue[0]=0;
red[1]=green[1]=blue[1]=255;
}
// Gray scale
else if(header.depth==8){
//FXTRACE((1,"fxloadRAS: 8 bit\n"));
for(i=0; i<256; i++){
red[i]=green[i]=blue[i]=i;
}
}
// Allocate pixel data
if(!FXMALLOC(&data,FXColor,npixels)) return false;
// Allocate scanline
if(!FXMALLOC(&line,FXuchar,linesize)){ FXFREE(&data); return false; }
// Now read the image
for(y=0,p=(FXuchar*)data,count=c=0; y<height; y++){
if(header.type!=RT_BYTE_ENCODED){ // Load uncompressed
store.load(line,linesize);
}
else{
for(i=0; i<linesize; i++){ // Load RLE compressed
if(count){
line[i]=c;
count--;
}
else{
store >> c;
if(c==0x80){
store >> count;
if(count==0){
line[i]=0x80;
}
else{
store >> c;
line[i]=c;
}
}
else{
line[i]=c;
}
}
}
}
// Check if stream contains a RAS
bool fxcheckRAS(FXStream& store){
FXint signature;
signature=read32(store);
store.position(-4,FXFromCurrent);
return signature==RAS_MAGIC;
}