326 lines
8.7 KiB
C++
326 lines
8.7 KiB
C++
/*
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* File: ximajas.cpp
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* Purpose: Platform Independent JasPer Image Class Loader and Writer
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* 12/Apr/2003 Davide Pizzolato - www.xdp.it
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* CxImage version 7.0.2 07/Feb/2011
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*/
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#include "ximajas.h"
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#if CXIMAGE_SUPPORT_JASPER
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////////////////////////////////////////////////////////////////////////////////
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#if CXIMAGE_SUPPORT_DECODE
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////////////////////////////////////////////////////////////////////////////////
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bool CxImageJAS::Decode(CxFile *hFile, uint32_t imagetype)
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{
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if (hFile == NULL) return false;
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jas_image_t *image=0;
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jas_stream_t *in=0;
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jas_matrix_t **bufs=0;
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int32_t i,error=0;
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int32_t fmt;
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//jas_setdbglevel(0);
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cx_try
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{
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if (jas_init())
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cx_throw("cannot initialize jasper");
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in = jas_stream_fdopen(0, "rb");
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if (!in)
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cx_throw("error: cannot open standard input");
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CxFileJas src(hFile,in);
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fmt = jas_image_getfmt(in);
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if (fmt<0)
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cx_throw("error: unknowm format");
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image = jas_image_decode(in, fmt, 0);
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if (!image){
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fmt = -1;
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cx_throw("error: cannot load image data");
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}
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char szfmt[4];
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*szfmt = '\0';
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strncpy(szfmt,jas_image_fmttostr(fmt),3);
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szfmt[3] = '\0';
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fmt = -1;
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#if CXIMAGE_SUPPORT_JP2
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if (strcmp(szfmt,"jp2")==0) fmt = CXIMAGE_FORMAT_JP2;
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#endif
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#if CXIMAGE_SUPPORT_JPC
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if (strcmp(szfmt,"jpc")==0) fmt = CXIMAGE_FORMAT_JPC;
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#endif
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#if CXIMAGE_SUPPORT_RAS
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if (strcmp(szfmt,"ras")==0) fmt = CXIMAGE_FORMAT_RAS;
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#endif
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#if CXIMAGE_SUPPORT_PNM
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if (strcmp(szfmt,"pnm")==0) fmt = CXIMAGE_FORMAT_PNM;
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#endif
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#if CXIMAGE_SUPPORT_PGX
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if (strcmp(szfmt,"pgx")==0) fmt = CXIMAGE_FORMAT_PGX;
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#endif
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//if (fmt<0)
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// cx_throw("error: unknowm format");
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int32_t x,y,w,h,depth,cmptno;
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w = jas_image_cmptwidth(image,0);
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h = jas_image_cmptheight(image,0);
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depth = jas_image_cmptprec(image,0);
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if (info.nEscape == -1){
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head.biWidth = w;
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head.biHeight= h;
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info.dwType = fmt<0 ? 0 : fmt;
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cx_throw("output dimensions returned");
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}
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if (image->numcmpts_ > 64 || image->numcmpts_ < 0)
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cx_throw("error: too many components");
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// <LD> 01/Jan/2005: Always force conversion to sRGB. Seems to be required for many types of JPEG2000 file.
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// if (depth!=1 && depth!=4 && depth!=8)
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if (image->numcmpts_>=3 && depth <=8)
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{
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jas_image_t *newimage;
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jas_cmprof_t *outprof;
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//jas_eprintf("forcing conversion to sRGB\n");
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outprof = jas_cmprof_createfromclrspc(JAS_CLRSPC_SRGB);
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if (!outprof) {
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cx_throw("cannot create sRGB profile");
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}
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newimage = jas_image_chclrspc(image, outprof, JAS_CMXFORM_INTENT_PER);
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if (!newimage) {
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jas_cmprof_destroy(outprof); // <LD> 01/Jan/2005: Destroy color profile on error.
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cx_throw("cannot convert to sRGB");
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}
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jas_image_destroy(image);
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jas_cmprof_destroy(outprof);
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image = newimage;
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}
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bufs = (jas_matrix_t **)calloc(image->numcmpts_, sizeof(jas_matrix_t**));
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for (i = 0; i < image->numcmpts_; ++i) {
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bufs[i] = jas_matrix_create(1, w);
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if (!bufs[i]) {
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cx_throw("error: cannot allocate memory");
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}
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}
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int32_t nshift = (depth>8) ? (depth-8) : 0;
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if (image->numcmpts_==3 &&
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image->cmpts_[0]->width_ == image->cmpts_[1]->width_ &&
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image->cmpts_[1]->width_ == image->cmpts_[2]->width_ &&
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image->cmpts_[0]->height_ == image->cmpts_[1]->height_ &&
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image->cmpts_[1]->height_ == image->cmpts_[2]->height_ &&
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image->cmpts_[0]->prec_ == image->cmpts_[1]->prec_ &&
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image->cmpts_[1]->prec_ == image->cmpts_[2]->prec_ )
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{
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if(!Create(w,h,24,fmt))
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cx_throw("");
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RGBQUAD c;
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for (y=0; y<h; y++) {
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for (cmptno = 0; cmptno < image->numcmpts_; ++cmptno) {
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jas_image_readcmpt(image, cmptno, 0, y, w, 1, bufs[cmptno]);
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}
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for (x=0; x<w; x++){
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c.rgbRed = (uint8_t)((jas_matrix_getv(bufs[0], x)>>nshift));
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c.rgbGreen = (uint8_t)((jas_matrix_getv(bufs[1], x)>>nshift));
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c.rgbBlue = (uint8_t)((jas_matrix_getv(bufs[2], x)>>nshift));
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SetPixelColor(x,h-1-y,c);
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}
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}
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} else {
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info.nNumFrames = image->numcmpts_;
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if ((info.nFrame<0)||(info.nFrame>=info.nNumFrames)){
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cx_throw("wrong frame!");
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}
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for (cmptno=0; cmptno<=info.nFrame; cmptno++) {
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w = jas_image_cmptwidth(image,cmptno);
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h = jas_image_cmptheight(image,cmptno);
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depth = jas_image_cmptprec(image,cmptno);
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if (depth>8) depth=8;
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if(!Create(w,h,depth,imagetype))
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cx_throw("");
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SetGrayPalette();
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for (y=0; y<h; y++) {
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jas_image_readcmpt(image, cmptno, 0, y, w, 1, bufs[0]);
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for (x=0; x<w; x++){
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SetPixelIndex(x,h-1-y,(uint8_t)((jas_matrix_getv(bufs[0], x)>>nshift)));
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}
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}
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}
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}
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} cx_catch {
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if (strcmp(message,"")) strncpy(info.szLastError,message,255);
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if (info.nEscape == -1 && fmt>0){
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error = 0;
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} else {
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error = 1;
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}
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}
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if (bufs) {
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for (i = 0; i < image->numcmpts_; ++i){ if (bufs[i]) jas_matrix_destroy(bufs[i]);}
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free(bufs);
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}
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jas_cleanup();
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if (image) jas_image_destroy(image);
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if (in) jas_stream_close(in);
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return (error==0);
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}
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////////////////////////////////////////////////////////////////////////////////
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#endif //CXIMAGE_SUPPORT_DECODE
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////////////////////////////////////////////////////////////////////////////////
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#if CXIMAGE_SUPPORT_ENCODE
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////////////////////////////////////////////////////////////////////////////////
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bool CxImageJAS::Encode(CxFile * hFile, uint32_t imagetype)
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{
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if (EncodeSafeCheck(hFile)) return false;
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if (head.biClrUsed!=0 && !IsGrayScale()){
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strcpy(info.szLastError,"JasPer can save only RGB or GrayScale images");
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return false;
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}
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jas_image_t *image=0;
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jas_stream_t *out=0;
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jas_matrix_t *cmpts[3];
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int32_t x,y,yflip,error=0;
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uint_fast16_t cmptno, numcmpts=0;
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jas_image_cmptparm_t cmptparms[3], *cmptparm;
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cx_try {
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if (jas_init())
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cx_throw("cannot initialize jasper");
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out = jas_stream_fdopen(0, "wb");
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if (!out)
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cx_throw("error: cannot open standard output");
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CxFileJas src(hFile,out);
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numcmpts = head.biClrUsed==0 ? 3 : 1;
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for (cmptno = 0, cmptparm = cmptparms; cmptno < numcmpts; ++cmptno, ++cmptparm) {
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cmptparm->tlx = 0;
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cmptparm->tly = 0;
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cmptparm->hstep = 1;
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cmptparm->vstep = 1;
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cmptparm->width = head.biWidth;
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cmptparm->height = head.biHeight;
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cmptparm->prec = 8;
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cmptparm->sgnd = false;
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}
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/* Create image object. */
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image = jas_image_create(numcmpts, cmptparms, JAS_CLRSPC_UNKNOWN);
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if (!image)
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cx_throw("error : jas_image_create");
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if (numcmpts == 3) {
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jas_image_setclrspc(image, JAS_CLRSPC_SRGB);
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jas_image_setcmpttype(image, 0,
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JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_R));
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jas_image_setcmpttype(image, 1,
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JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_G));
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jas_image_setcmpttype(image, 2,
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JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_B));
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} else {
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jas_image_setclrspc(image, JAS_CLRSPC_SGRAY);
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jas_image_setcmpttype(image, 0,
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JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_GRAY_Y));
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}
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for (x = 0; x < numcmpts; ++x) { cmpts[x] = 0; }
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/* Create temporary matrices to hold component data. */
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for (x = 0; x < numcmpts; ++x) {
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cmpts[x] = jas_matrix_create(1, head.biWidth);
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if (!cmpts[x]) {
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cx_throw("error : can't allocate memory");
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}
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}
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RGBQUAD c;
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for (y = 0; y < head.biHeight; ++y) {
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for (x = 0; x < head.biWidth; ++x) {
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if (head.biClrUsed==0){
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c = GetPixelColor(x,y);
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jas_matrix_setv(cmpts[0], x, c.rgbRed);
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jas_matrix_setv(cmpts[1], x, c.rgbGreen);
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jas_matrix_setv(cmpts[2], x, c.rgbBlue);
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} else {
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jas_matrix_setv(cmpts[0], x, GetPixelIndex(x,y));
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}
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}
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yflip = head.biHeight - 1 - y;
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for (cmptno = 0; cmptno < numcmpts; ++cmptno) {
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if (jas_image_writecmpt(image, cmptno, 0, yflip, head.biWidth, 1, cmpts[cmptno])) {
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cx_throw("error : jas_image_writecmpt");
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}
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}
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}
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char szfmt[4];
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*szfmt = '\0';
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#if CXIMAGE_SUPPORT_JP2
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if (imagetype == CXIMAGE_FORMAT_JP2) strcpy(szfmt,"jp2");
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#endif
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#if CXIMAGE_SUPPORT_JPC
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if (imagetype == CXIMAGE_FORMAT_JPC) strcpy(szfmt,"jpc");
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#endif
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#if CXIMAGE_SUPPORT_RAS
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if (imagetype == CXIMAGE_FORMAT_RAS) strcpy(szfmt,"ras");
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#endif
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#if CXIMAGE_SUPPORT_PNM
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if (imagetype == CXIMAGE_FORMAT_PNM) strcpy(szfmt,"pnm");
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#endif
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#if CXIMAGE_SUPPORT_PGX
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if (imagetype == CXIMAGE_FORMAT_PGX){
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strcpy(szfmt,"pgx");
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if (head.biClrUsed==0) cx_throw("PGX can save only GrayScale images");
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}
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#endif
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int32_t outfmt = jas_image_strtofmt(szfmt);
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char szoutopts[32];
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sprintf(szoutopts,"rate=%.3f", info.fQuality/100.0f);
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if (jas_image_encode(image, out, outfmt, szoutopts)) {
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cx_throw("error: cannot encode image");
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}
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jas_stream_flush(out);
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} cx_catch {
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if (strcmp(message,"")) strncpy(info.szLastError,message,255);
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error = 1;
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}
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for (x = 0; x < numcmpts; ++x) { if (cmpts[x]) { jas_matrix_destroy(cmpts[x]); } }
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jas_cleanup();
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if (image) jas_image_destroy(image);
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if (out) jas_stream_close(out);
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return (error==0);
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}
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////////////////////////////////////////////////////////////////////////////////
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#endif // CXIMAGE_SUPPORT_ENCODE
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////////////////////////////////////////////////////////////////////////////////
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#endif // CXIMAGE_SUPPORT_JASPER
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