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#ifndef lint |
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static const char RCSid[] = "$Id: tmaptiff.c,v 3.5 2005/01/07 20:33:02 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" |
| 15 |
#include "tmaptiff.h" |
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|
| 17 |
/* input cases we handle */ |
| 18 |
#define TC_LOGLUV32 1 |
| 19 |
#define TC_LOGLUV24 2 |
| 20 |
#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 */ |
| 27 |
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(TMstruct *tms, TMbright **lpp, BYTE **cpp, |
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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 = tms->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 (tms == 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(tms, TM_XYZPRIM, stonits, NULL); |
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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(tms, tms->monpri, stonits, NULL); |
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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(tms, inppri, stonits, NULL); |
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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(tms, tms->monpri, stonits, NULL); |
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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(tms, inppri, stonits, NULL); |
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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(tms, tms->monpri, stonits, NULL); |
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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)); |
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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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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 */ |
| 183 |
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(tms, *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: |
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err = tmCvLuv24(tms, *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(tms, *lpp + y*width, sl.w, width); |
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break; |
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case TC_RGBFLOAT: |
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err = tmCvColors(tms, *lpp + y*width, |
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cpp==TM_NOCHROMP ? TM_NOCHROM : *cpp+y*3*width, |
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(COLOR *)sl.f, width); |
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break; |
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case TC_GRYFLOAT: |
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err = tmCvGrays(tms, *lpp + y*width, sl.f, width); |
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break; |
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case TC_RGBSHORT: |
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err = tmCvRGB48(tms, *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: |
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err = tmCvGray16(tms, *lpp + y*width, |
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sl.w, width, DEFGAM); |
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break; |
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default: |
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err = TM_E_CODERR1; |
| 221 |
break; |
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} |
| 223 |
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); |
| 229 |
if (sl.p != NULL) |
| 230 |
free(sl.p); |
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if (err != TM_E_OK) { /* free buffers on error */ |
| 232 |
if (*lpp != NULL) |
| 233 |
free((MEM_PTR)*lpp); |
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*lpp = NULL; |
| 235 |
if (cpp != TM_NOCHROMP) { |
| 236 |
if (*cpp != TM_NOCHROM) |
| 237 |
free((MEM_PTR)*cpp); |
| 238 |
*cpp = NULL; |
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} |
| 240 |
*xp = *yp = 0; |
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returnErr(err); |
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} |
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returnOK; |
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} |
| 245 |
|
| 246 |
|
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/* |
| 248 |
* Load and tone-map a SGILOG TIFF. |
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* Beware of greyscale input -- you must check the PHOTOMETRIC tag to |
| 250 |
* determine that the returned array contains only grey values, not RGB. |
| 251 |
* 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(BYTE **psp, int *xp, int *yp, int flags, RGBPRIMP monpri, |
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double gamval, double Lddyn, double Ldmax, char *fname, TIFF *tp) |
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{ |
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char *funcName = fname==NULL ? "tmMapTIFF" : fname; |
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TMstruct *tms; |
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TMbright *lp; |
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BYTE *cp; |
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int err; |
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/* check arguments */ |
| 263 |
if ((psp == NULL) | (xp == NULL) | (yp == NULL) | (monpri == NULL) | |
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((fname == NULL) & (tp == NULL))) |
| 265 |
returnErr(TM_E_ILLEGAL); |
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if (gamval < MINGAM) gamval = DEFGAM; |
| 267 |
if (Lddyn < MINLDDYN) Lddyn = DEFLDDYN; |
| 268 |
if (Ldmax < MINLDMAX) Ldmax = DEFLDMAX; |
| 269 |
if (flags & TM_F_BW) monpri = stdprims; |
| 270 |
/* initialize tone mapping */ |
| 271 |
if ((tms = tmInit(flags, monpri, gamval)) == NULL) |
| 272 |
returnErr(TM_E_NOMEM); |
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/* load and convert TIFF */ |
| 274 |
cp = TM_NOCHROM; |
| 275 |
err = tmLoadTIFF(tms, &lp, flags&TM_F_BW ? TM_NOCHROMP : &cp, |
| 276 |
xp, yp, fname, tp); |
| 277 |
if (err != TM_E_OK) { |
| 278 |
tmDone(tms); |
| 279 |
return(err); |
| 280 |
} |
| 281 |
if (cp == TM_NOCHROM) { |
| 282 |
*psp = (BYTE *)malloc(*xp * *yp * sizeof(BYTE)); |
| 283 |
if (*psp == NULL) { |
| 284 |
free((MEM_PTR)lp); |
| 285 |
tmDone(tms); |
| 286 |
returnErr(TM_E_NOMEM); |
| 287 |
} |
| 288 |
} else |
| 289 |
*psp = cp; |
| 290 |
/* compute color mapping */ |
| 291 |
err = tmAddHisto(tms, lp, *xp * *yp, 1); |
| 292 |
if (err != TM_E_OK) |
| 293 |
goto done; |
| 294 |
err = tmComputeMapping(tms, gamval, Lddyn, Ldmax); |
| 295 |
if (err != TM_E_OK) |
| 296 |
goto done; |
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/* map pixels */ |
| 298 |
err = tmMapPixels(tms, *psp, lp, cp, *xp * *yp); |
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|
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done: /* clean up */ |
| 301 |
free((MEM_PTR)lp); |
| 302 |
tmDone(tms); |
| 303 |
if (err != TM_E_OK) { /* free memory on error */ |
| 304 |
free((MEM_PTR)*psp); |
| 305 |
*psp = NULL; |
| 306 |
*xp = *yp = 0; |
| 307 |
returnErr(err); |
| 308 |
} |
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returnOK; |
| 310 |
} |
