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#ifndef lint |
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static const char RCSid[] = "$Id: tmaptiff.c,v 3.3 2003/07/14 04:56:54 greg Exp $"; |
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#endif |
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/* |
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* Perform tone mapping on TIFF input. |
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* |
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* Externals declared in tmaptiff.h |
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*/ |
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|
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#include "copyright.h" |
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|
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#include <stdio.h> |
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#include "tiffio.h" |
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#include "tmprivat.h" |
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#include "tmaptiff.h" |
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|
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/* input cases we handle */ |
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#define TC_LOGLUV32 1 |
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#define TC_LOGLUV24 2 |
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#define TC_LOGL16 3 |
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#define TC_GRYFLOAT 4 |
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#define TC_RGBFLOAT 5 |
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#define TC_GRYSHORT 6 |
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#define TC_RGBSHORT 7 |
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|
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/* figure out what kind of TIFF we have and if we can tone-map it */ |
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static int |
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getTIFFtype(TIFF *tif) |
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{ |
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uint16 comp, phot, pconf; |
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uint16 samp_fmt, bits_samp; |
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|
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TIFFGetFieldDefaulted(tif, TIFFTAG_PLANARCONFIG, &pconf); |
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if (pconf != PLANARCONFIG_CONTIG) |
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return(0); |
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TIFFGetFieldDefaulted(tif, TIFFTAG_PHOTOMETRIC, &phot); |
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TIFFGetFieldDefaulted(tif, TIFFTAG_COMPRESSION, &comp); |
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TIFFGetFieldDefaulted(tif, TIFFTAG_SAMPLEFORMAT, &samp_fmt); |
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TIFFGetFieldDefaulted(tif, TIFFTAG_BITSPERSAMPLE, &bits_samp); |
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switch (phot) { |
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case PHOTOMETRIC_LOGLUV: |
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if (comp == COMPRESSION_SGILOG) |
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return(TC_LOGLUV32); |
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if (comp == COMPRESSION_SGILOG24) |
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return(TC_LOGLUV24); |
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return(0); |
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case PHOTOMETRIC_LOGL: |
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if (comp == COMPRESSION_SGILOG) |
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return(TC_LOGL16); |
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return(0); |
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case PHOTOMETRIC_MINISBLACK: |
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if (samp_fmt == SAMPLEFORMAT_UINT) { |
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if (bits_samp == 16) |
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return(TC_GRYSHORT); |
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return(0); |
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} |
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if (samp_fmt == SAMPLEFORMAT_IEEEFP) { |
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if (bits_samp == 8*sizeof(float)) |
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return(TC_GRYFLOAT); |
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return(0); |
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} |
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return(0); |
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case PHOTOMETRIC_RGB: |
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if (samp_fmt == SAMPLEFORMAT_UINT) { |
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if (bits_samp == 16) |
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return(TC_RGBSHORT); |
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return(0); |
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} |
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if (samp_fmt == SAMPLEFORMAT_IEEEFP) { |
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if (bits_samp == 8*sizeof(float)) |
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return(TC_RGBFLOAT); |
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return(0); |
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} |
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return(0); |
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} |
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return(0); |
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} |
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|
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/* load and convert TIFF */ |
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int |
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tmLoadTIFF(TMbright **lpp, BYTE **cpp, int *xp, int *yp, char *fname, TIFF *tp) |
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{ |
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char *funcName = fname==NULL ? "tmLoadTIFF" : fname; |
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RGBPRIMP inppri = tmTop->monpri; |
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RGBPRIMS myprims; |
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float *fa; |
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TIFF *tif; |
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int err; |
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union {uint16 *w; uint32 *l; float *f; MEM_PTR p;} sl; |
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uint32 width, height; |
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int tcase; |
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double stonits; |
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int y; |
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/* check arguments */ |
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if (tmTop == NULL) |
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returnErr(TM_E_TMINVAL); |
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if ((lpp == NULL) | (xp == NULL) | (yp == NULL) | |
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((fname == NULL) & (tp == NULL))) |
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returnErr(TM_E_ILLEGAL); |
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/* check/get TIFF tags */ |
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sl.p = NULL; *lpp = NULL; |
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if (cpp != TM_NOCHROMP) *cpp = TM_NOCHROM; |
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err = TM_E_BADFILE; |
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if ((tif = tp) == NULL && (tif = TIFFOpen(fname, "r")) == NULL) |
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returnErr(TM_E_BADFILE); |
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tcase = getTIFFtype(tif); |
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if (!tcase) |
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goto done; |
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if (!TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &width) || |
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!TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &height)) |
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goto done; |
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*xp = width; *yp = height; |
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if (TIFFGetField(tif, TIFFTAG_PRIMARYCHROMATICITIES, &fa)) { |
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myprims[RED][CIEX] = fa[0]; |
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myprims[RED][CIEY] = fa[1]; |
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myprims[GRN][CIEX] = fa[2]; |
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myprims[GRN][CIEY] = fa[3]; |
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myprims[BLU][CIEX] = fa[4]; |
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myprims[BLU][CIEY] = fa[5]; |
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myprims[WHT][CIEX] = 1./3.; |
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myprims[WHT][CIEY] = 1./3.; |
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if (TIFFGetField(tif, TIFFTAG_WHITEPOINT, &fa)) { |
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myprims[WHT][CIEX] = fa[0]; |
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myprims[WHT][CIEY] = fa[1]; |
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} |
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inppri = myprims; |
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} |
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if (!TIFFGetField(tif, TIFFTAG_STONITS, &stonits)) |
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stonits = 1.; |
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switch (tcase) { /* set up conversion */ |
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case TC_LOGLUV32: |
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case TC_LOGLUV24: |
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TIFFSetField(tif, TIFFTAG_SGILOGDATAFMT, SGILOGDATAFMT_RAW); |
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sl.l = (uint32 *)malloc(width*sizeof(uint32)); |
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tmSetSpace(TM_XYZPRIM, stonits); |
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break; |
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case TC_LOGL16: |
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TIFFSetField(tif, TIFFTAG_SGILOGDATAFMT, SGILOGDATAFMT_16BIT); |
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sl.w = (uint16 *)malloc(width*sizeof(uint16)); |
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tmSetSpace(tmTop->monpri, stonits); |
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break; |
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case TC_RGBFLOAT: |
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sl.f = (float *)malloc(width*3*sizeof(float)); |
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tmSetSpace(inppri, stonits); |
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break; |
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case TC_GRYFLOAT: |
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sl.f = (float *)malloc(width*sizeof(float)); |
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tmSetSpace(tmTop->monpri, stonits); |
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break; |
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case TC_RGBSHORT: |
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sl.w = (uint16 *)malloc(width*3*sizeof(uint16)); |
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tmSetSpace(inppri, stonits); |
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break; |
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case TC_GRYSHORT: |
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sl.w = (uint16 *)malloc(width*sizeof(uint16)); |
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tmSetSpace(tmTop->monpri, stonits); |
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break; |
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default: |
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err = TM_E_CODERR1; |
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goto done; |
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} |
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*lpp = (TMbright *)malloc(width*height*sizeof(TMbright)); |
163 |
if ((sl.p == NULL) | (*lpp == NULL)) { |
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err = TM_E_NOMEM; |
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goto done; |
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} |
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switch (tcase) { /* allocate color if needed */ |
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case TC_LOGLUV32: |
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case TC_LOGLUV24: |
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case TC_RGBFLOAT: |
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case TC_RGBSHORT: |
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if (cpp == TM_NOCHROMP) |
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break; |
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*cpp = (BYTE *)malloc(width*height*3*sizeof(BYTE)); |
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if (*cpp == NULL) { |
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err = TM_E_NOMEM; |
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goto done; |
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} |
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break; |
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} |
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/* read and convert each scanline */ |
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for (y = 0; y < height; y++) { |
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if (TIFFReadScanline(tif, sl.p, y, 0) < 0) { |
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err = TM_E_BADFILE; |
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break; |
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} |
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switch (tcase) { |
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case TC_LOGLUV32: |
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err = tmCvLuv32(*lpp + y*width, |
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cpp==TM_NOCHROMP ? TM_NOCHROM : *cpp+y*3*width, |
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sl.l, width); |
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break; |
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case TC_LOGLUV24: |
194 |
err = tmCvLuv24(*lpp + y*width, |
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cpp==TM_NOCHROMP ? TM_NOCHROM : *cpp+y*3*width, |
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sl.l, width); |
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break; |
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case TC_LOGL16: |
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err = tmCvL16(*lpp + y*width, sl.w, width); |
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break; |
201 |
case TC_RGBFLOAT: |
202 |
err = tmCvColors(*lpp + y*width, |
203 |
cpp==TM_NOCHROMP ? TM_NOCHROM : *cpp+y*3*width, |
204 |
(COLOR *)sl.f, width); |
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break; |
206 |
case TC_GRYFLOAT: |
207 |
err = tmCvGrays(*lpp + y*width, sl.f, width); |
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break; |
209 |
case TC_RGBSHORT: |
210 |
err = tmCvRGB48(*lpp + y*width, |
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cpp==TM_NOCHROMP ? TM_NOCHROM : *cpp+y*3*width, |
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(uint16 (*)[3])sl.w, width, DEFGAM); |
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break; |
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case TC_GRYSHORT: |
215 |
err = tmCvGray16(*lpp + y*width, sl.w, width, DEFGAM); |
216 |
break; |
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default: |
218 |
err = TM_E_CODERR1; |
219 |
break; |
220 |
} |
221 |
if (err != TM_E_OK) |
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break; |
223 |
} |
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done: /* clean up */ |
225 |
if (tp == NULL) |
226 |
TIFFClose(tif); |
227 |
if (sl.p != NULL) |
228 |
free(sl.p); |
229 |
if (err != TM_E_OK) { /* free buffers on error */ |
230 |
if (*lpp != NULL) |
231 |
free((MEM_PTR)*lpp); |
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*lpp = NULL; |
233 |
if (cpp != TM_NOCHROMP) { |
234 |
if (*cpp != TM_NOCHROM) |
235 |
free((MEM_PTR)*cpp); |
236 |
*cpp = NULL; |
237 |
} |
238 |
*xp = *yp = 0; |
239 |
returnErr(err); |
240 |
} |
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returnOK; |
242 |
} |
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|
244 |
|
245 |
/* |
246 |
* Load and tone-map a SGILOG TIFF. |
247 |
* Beware of greyscale input -- you must check the PHOTOMETRIC tag to |
248 |
* determine that the returned array contains only grey values, not RGB. |
249 |
* As in tmMapPicture(), grey values are also returned if flags&TM_F_BW. |
250 |
*/ |
251 |
int |
252 |
tmMapTIFF(BYTE **psp, int *xp, int *yp, int flags, RGBPRIMP monpri, |
253 |
double gamval, double Lddyn, double Ldmax, char *fname, TIFF *tp) |
254 |
{ |
255 |
char *funcName = fname==NULL ? "tmMapTIFF" : fname; |
256 |
TMbright *lp; |
257 |
BYTE *cp; |
258 |
int err; |
259 |
/* check arguments */ |
260 |
if ((psp == NULL) | (xp == NULL) | (yp == NULL) | (monpri == NULL) | |
261 |
((fname == NULL) & (tp == NULL))) |
262 |
returnErr(TM_E_ILLEGAL); |
263 |
if (gamval < MINGAM) gamval = DEFGAM; |
264 |
if (Lddyn < MINLDDYN) Lddyn = DEFLDDYN; |
265 |
if (Ldmax < MINLDMAX) Ldmax = DEFLDMAX; |
266 |
if (flags & TM_F_BW) monpri = stdprims; |
267 |
/* initialize tone mapping */ |
268 |
if (tmInit(flags, monpri, gamval) == NULL) |
269 |
returnErr(TM_E_NOMEM); |
270 |
/* load and convert TIFF */ |
271 |
cp = TM_NOCHROM; |
272 |
err = tmLoadTIFF(&lp, flags&TM_F_BW ? TM_NOCHROMP : &cp, |
273 |
xp, yp, fname, tp); |
274 |
if (err != TM_E_OK) { |
275 |
tmDone(NULL); |
276 |
return(err); |
277 |
} |
278 |
if (cp == TM_NOCHROM) { |
279 |
*psp = (BYTE *)malloc(*xp * *yp * sizeof(BYTE)); |
280 |
if (*psp == NULL) { |
281 |
free((MEM_PTR)lp); |
282 |
tmDone(NULL); |
283 |
returnErr(TM_E_NOMEM); |
284 |
} |
285 |
} else |
286 |
*psp = cp; |
287 |
/* compute color mapping */ |
288 |
err = tmAddHisto(lp, *xp * *yp, 1); |
289 |
if (err != TM_E_OK) |
290 |
goto done; |
291 |
err = tmComputeMapping(gamval, Lddyn, Ldmax); |
292 |
if (err != TM_E_OK) |
293 |
goto done; |
294 |
/* map pixels */ |
295 |
err = tmMapPixels(*psp, lp, cp, *xp * *yp); |
296 |
|
297 |
done: /* clean up */ |
298 |
free((MEM_PTR)lp); |
299 |
tmDone(NULL); |
300 |
if (err != TM_E_OK) { /* free memory on error */ |
301 |
free((MEM_PTR)*psp); |
302 |
*psp = NULL; |
303 |
*xp = *yp = 0; |
304 |
returnErr(err); |
305 |
} |
306 |
returnOK; |
307 |
} |