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* program to convert between RADIANCE and Windows BMP file |
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*/ |
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#include <stdio.h> |
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#include <string.h> |
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#include <math.h> |
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#include "rtio.h" |
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#include "platform.h" |
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#include "color.h" |
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#include "tonemap.h" |
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#include "resolu.h" |
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#include "bmpfile.h" |
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int bradj = 0; /* brightness adjustment */ |
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int bradj = 0; /* brightness adjustment */ |
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double gamcor = 2.2; /* gamma correction value */ |
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double gamcor = 2.2; /* gamma correction value */ |
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char *progname; |
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char *progname; |
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static void quiterr(const char *err); |
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static void tmap2bmp(char *fnin, char *fnout, char *expec, |
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RGBPRIMP monpri, double gamval); |
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static void rad2bmp(FILE *rfp, BMPWriter *bwr, int inv, int gry); |
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static void rad2bmp(FILE *rfp, BMPWriter *bwr, int inv, RGBPRIMP monpri); |
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static void bmp2rad(BMPReader *brd, FILE *rfp, int inv); |
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static RGBPRIMP rgbinp = stdprims; /* RGB input primitives */ |
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static RGBPRIMS myinprims; /* custom primitives holder */ |
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static gethfunc headline; |
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int |
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main(int argc, char *argv[]) |
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{ |
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exit(1); |
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} |
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/* get header info. */ |
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if (checkheader(stdin, COLRFMT, NULL) < 0 || |
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if (getheader(stdin, headline, NULL) < 0 || |
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!fgetsresolu(&rs, stdin)) |
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quiterr("bad Radiance picture format"); |
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/* initialize BMP header */ |
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if (rgbp == NULL) { |
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hdr = BMPmappedHeader(scanlen(&rs), |
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numscans(&rs), 0, 256); |
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/* |
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if (outfile != NULL) |
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hdr->compr = BI_RLE8; |
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*/ |
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} else |
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hdr = BMPtruecolorHeader(scanlen(&rs), |
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numscans(&rs), 0); |
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if (wtr == NULL) |
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quiterr("cannot allocate writer structure"); |
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/* convert file */ |
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rad2bmp(stdin, wtr, !hdr->yIsDown, rgbp==NULL); |
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rad2bmp(stdin, wtr, !hdr->yIsDown, rgbp); |
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/* flush output */ |
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if (fflush((FILE *)wtr->c_data) < 0) |
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quiterr("error writing BMP output"); |
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exit(0); |
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} |
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/* process header line (don't echo) */ |
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static int |
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headline(char *s, void *p) |
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{ |
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char fmt[MAXFMTLEN]; |
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if (formatval(fmt, s)) { /* check if format string */ |
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if (!strcmp(fmt,COLRFMT)) |
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return(0); |
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if (!strcmp(fmt,CIEFMT)) { |
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rgbinp = TM_XYZPRIM; |
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return(0); |
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} |
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return(-1); |
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} |
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if (isprims(s)) { /* get input primaries */ |
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primsval(myinprims, s); |
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rgbinp = myinprims; |
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return(0); |
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} |
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/* should I grok colcorr also? */ |
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return(0); |
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} |
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|
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|
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/* convert Radiance picture to BMP */ |
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static void |
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rad2bmp(FILE *rfp, BMPWriter *bwr, int inv, int gry) |
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rad2bmp(FILE *rfp, BMPWriter *bwr, int inv, RGBPRIMP monpri) |
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{ |
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int usexfm = 0; |
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COLORMAT xfm; |
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COLR *scanin; |
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COLOR cval; |
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int y, yend, ystp; |
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int x; |
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/* allocate scanline */ |
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scanin = (COLR *)malloc(bwr->hdr->width*sizeof(COLR)); |
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if (scanin == NULL) |
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quiterr("out of memory in rad2bmp"); |
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/* set up color conversion */ |
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usexfm = (monpri != NULL ? rgbinp != monpri : |
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rgbinp != TM_XYZPRIM && rgbinp != stdprims); |
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if (usexfm) { |
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RGBPRIMP destpri = monpri != NULL ? monpri : stdprims; |
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double expcomp = pow(2.0, (double)bradj); |
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if (rgbinp == TM_XYZPRIM) |
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compxyz2rgbWBmat(xfm, destpri); |
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else |
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comprgb2rgbWBmat(xfm, rgbinp, destpri); |
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for (y = 0; y < 3; y++) |
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for (x = 0; x < 3; x++) |
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xfm[y][x] *= expcomp; |
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} |
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/* convert image */ |
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if (inv) { |
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y = bwr->hdr->height - 1; |
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for ( ; y != yend; y += ystp) { |
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if (freadcolrs(scanin, bwr->hdr->width, rfp) < 0) |
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quiterr("error reading Radiance picture"); |
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if (bradj) |
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if (usexfm) |
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for (x = bwr->hdr->width; x--; ) { |
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colr_color(cval, scanin[x]); |
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colortrans(cval, xfm, cval); |
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setcolr(scanin[x], colval(cval,RED), |
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colval(cval,GRN), |
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colval(cval,BLU)); |
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} |
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else if (bradj) |
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shiftcolrs(scanin, bwr->hdr->width, bradj); |
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for (x = gry ? bwr->hdr->width : 0; x--; ) |
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scanin[x][GRN] = normbright(scanin[x]); |
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if (monpri == NULL && rgbinp != TM_XYZPRIM) |
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for (x = bwr->hdr->width; x--; ) |
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scanin[x][GRN] = normbright(scanin[x]); |
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colrs_gambs(scanin, bwr->hdr->width); |
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if (gry) |
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if (monpri == NULL) |
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for (x = bwr->hdr->width; x--; ) |
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bwr->scanline[x] = scanin[x][GRN]; |
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else |
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BMPWriter *wtr; |
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FILE *fp; |
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int xr, yr; |
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BYTE *pa; |
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uby8 *pa; |
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int i; |
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/* check tone-mapping spec */ |
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i = strlen(expec); |
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quiterr("cannot allocate writer structure"); |
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/* write to BMP file */ |
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while (wtr->yscan < yr) { |
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BYTE *scn = pa + xr*((tmflags & TM_F_BW) ? 1 : 3)* |
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uby8 *scn = pa + xr*((tmflags & TM_F_BW) ? 1 : 3)* |
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(yr-1 - wtr->yscan); |
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if (tmflags & TM_F_BW) |
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memcpy((void *)wtr->scanline, (void *)scn, xr); |
