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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
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|
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#ifndef lint |
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static char SCCSid[] = "$SunId$ SGI"; |
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#endif |
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|
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/* |
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* Perform tone mapping on TIFF input. |
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*/ |
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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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|
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|
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int |
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tmLoadTIFF(lpp, cpp, xp, yp, fname, tp) /* load and convert TIFF */ |
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TMbright **lpp; |
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BYTE **cpp; |
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int *xp, *yp; |
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char *fname; |
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TIFF *tp; |
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{ |
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char *funcName = fname==NULL ? "tmLoadTIFF" : fname; |
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TIFF *tif; |
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int err; |
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union {uint16 *w; uint32 *l; MEM_PTR p;} sl; |
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uint16 comp, phot, pconf; |
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uint32 width, height; |
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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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TIFFGetFieldDefaulted(tif, TIFFTAG_PHOTOMETRIC, &phot); |
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TIFFGetFieldDefaulted(tif, TIFFTAG_COMPRESSION, &comp); |
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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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TIFFGetFieldDefaulted(tif, TIFFTAG_PLANARCONFIG, &pconf); |
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if (pconf != PLANARCONFIG_CONTIG) |
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goto done; |
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if (!TIFFGetField(tif, TIFFTAG_STONITS, &stonits)) |
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stonits = 1.; |
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if (phot == PHOTOMETRIC_LOGLUV) { |
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if (comp != COMPRESSION_SGILOG && comp != COMPRESSION_SGILOG24) |
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goto done; |
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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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if (cpp != TM_NOCHROMP) { |
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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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} |
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} else if (phot == PHOTOMETRIC_LOGL) { |
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if (comp != COMPRESSION_SGILOG) |
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goto done; |
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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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} else |
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goto done; |
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*lpp = (TMbright *)malloc(width*height*sizeof(TMbright)); |
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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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/* set input color space */ |
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tmSetSpace(TM_XYZPRIM, stonits); |
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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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if (phot == PHOTOMETRIC_LOGL) |
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err = tmCvL16(*lpp + y*width, sl.w, width); |
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else if (comp == COMPRESSION_SGILOG24) |
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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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else |
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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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if (err != TM_E_OK) |
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break; |
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} |
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done: /* clean up */ |
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if (tp == NULL) |
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TIFFClose(tif); |
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if (sl.p != NULL) |
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free(sl.p); |
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if (err != TM_E_OK) { /* free buffers on error */ |
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if (*lpp != NULL) |
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free((MEM_PTR)*lpp); |
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*lpp = NULL; |
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if (cpp != TM_NOCHROMP) { |
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if (*cpp != TM_NOCHROM) |
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free((MEM_PTR)*cpp); |
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*cpp = NULL; |
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} |
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*xp = *yp = 0; |
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returnErr(err); |
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} |
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returnOK; |
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} |
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|
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|
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/* |
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* Load and tone-map a SGILOG TIFF. |
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* Beware of greyscale input -- you must check the PHOTOMETRIC tag to |
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* determine that the returned array contains only grey values, not RGB. |
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* As in tmMapPicture(), grey values are also returned if flags&TM_F_BW. |
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*/ |
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int |
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tmMapTIFF(psp, xp, yp, flags, monpri, gamval, Lddyn, Ldmax, fname, tp) |
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BYTE **psp; |
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int *xp, *yp; |
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int flags; |
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RGBPRIMP monpri; |
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double gamval, Lddyn, Ldmax; |
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char *fname; |
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TIFF *tp; |
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{ |
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char *funcName = fname==NULL ? "tmMapTIFF" : fname; |
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TMbright *lp; |
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BYTE *cp; |
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int err; |
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/* check arguments */ |
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if (psp == NULL | xp == NULL | yp == NULL | monpri == NULL | |
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(fname == NULL & tp == NULL)) |
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returnErr(TM_E_ILLEGAL); |
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if (gamval < MINGAM) gamval = DEFGAM; |
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if (Lddyn < MINLDDYN) Lddyn = DEFLDDYN; |
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if (Ldmax < MINLDMAX) Ldmax = DEFLDMAX; |
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if (flags & TM_F_BW) monpri = stdprims; |
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/* initialize tone mapping */ |
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if (tmInit(flags, monpri, gamval) == NULL) |
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returnErr(TM_E_NOMEM); |
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/* load and convert TIFF */ |
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cp = TM_NOCHROM; |
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err = tmLoadTIFF(&lp, flags&TM_F_BW ? TM_NOCHROMP : &cp, |
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xp, yp, fname, tp); |
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if (err != TM_E_OK) { |
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tmDone(NULL); |
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return(err); |
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} |
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if (cp == TM_NOCHROM) { |
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*psp = (BYTE *)malloc(*xp * *yp * sizeof(BYTE)); |
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if (*psp == NULL) { |
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free((MEM_PTR)lp); |
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tmDone(NULL); |
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returnErr(TM_E_NOMEM); |
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} |
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} else |
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*psp = cp; |
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/* compute color mapping */ |
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err = tmAddHisto(lp, *xp * *yp, 1); |
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if (err != TM_E_OK) |
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goto done; |
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err = tmComputeMapping(gamval, Lddyn, Ldmax); |
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if (err != TM_E_OK) |
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goto done; |
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/* map pixels */ |
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err = tmMapPixels(*psp, lp, cp, *xp * *yp); |
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|
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done: /* clean up */ |
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free((MEM_PTR)lp); |
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tmDone(NULL); |
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if (err != TM_E_OK) { /* free memory on error */ |
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free((MEM_PTR)*psp); |
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*psp = NULL; |
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*xp = *yp = 0; |
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returnErr(err); |
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} |
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returnOK; |
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} |
