| 1 |
#ifndef lint
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| 2 |
static const char RCSid[] = "$Id: ra_bmp.c,v 2.11 2011/05/20 02:06:39 greg Exp $";
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| 3 |
#endif
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| 4 |
/*
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| 5 |
* program to convert between RADIANCE and Windows BMP file
|
| 6 |
*/
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| 7 |
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| 8 |
#include <stdio.h>
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| 9 |
#include <math.h>
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| 10 |
#include <string.h>
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| 11 |
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| 12 |
#include "platform.h"
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| 13 |
#include "color.h"
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| 14 |
#include "tonemap.h"
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| 15 |
#include "resolu.h"
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| 16 |
#include "bmpfile.h"
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| 17 |
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| 18 |
int bradj = 0; /* brightness adjustment */
|
| 19 |
|
| 20 |
double gamcor = 2.2; /* gamma correction value */
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| 21 |
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| 22 |
char *progname;
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| 23 |
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| 24 |
static void quiterr(const char *err);
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| 25 |
static void tmap2bmp(char *fnin, char *fnout, char *expec,
|
| 26 |
RGBPRIMP monpri, double gamval);
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| 27 |
static void rad2bmp(FILE *rfp, BMPWriter *bwr, int inv, RGBPRIMP monpri);
|
| 28 |
static void bmp2rad(BMPReader *brd, FILE *rfp, int inv);
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| 29 |
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| 30 |
static RGBPRIMP rgbinp = stdprims; /* RGB input primitives */
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| 31 |
static RGBPRIMS myinprims; /* custom primitives holder */
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| 32 |
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| 33 |
static gethfunc headline;
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| 34 |
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| 35 |
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| 36 |
int
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| 37 |
main(int argc, char *argv[])
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| 38 |
{
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| 39 |
char *inpfile=NULL, *outfile=NULL;
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| 40 |
char *expec = NULL;
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| 41 |
int reverse = 0;
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| 42 |
RGBPRIMP rgbp = stdprims;
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RGBPRIMS myprims;
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RESOLU rs;
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| 45 |
int i;
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| 46 |
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| 47 |
progname = argv[0];
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| 49 |
for (i = 1; i < argc; i++)
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| 50 |
if (argv[i][0] == '-' && argv[i][1])
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switch (argv[i][1]) {
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case 'b':
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rgbp = NULL;
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break;
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case 'g':
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gamcor = atof(argv[++i]);
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break;
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case 'e':
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if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
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expec = argv[++i];
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else
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bradj = atoi(argv[++i]);
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break;
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case 'p':
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if (argc-i < 9)
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goto userr;
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| 67 |
myprims[RED][CIEX] = atof(argv[++i]);
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myprims[RED][CIEY] = atof(argv[++i]);
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myprims[GRN][CIEX] = atof(argv[++i]);
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myprims[GRN][CIEY] = atof(argv[++i]);
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myprims[BLU][CIEX] = atof(argv[++i]);
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myprims[BLU][CIEY] = atof(argv[++i]);
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myprims[WHT][CIEX] = atof(argv[++i]);
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myprims[WHT][CIEY] = atof(argv[++i]);
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if (rgbp == stdprims)
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rgbp = myprims;
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break;
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case 'r':
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reverse = !reverse;
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break;
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default:
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goto userr;
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}
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else
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break;
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| 86 |
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| 87 |
if (i < argc-2)
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goto userr;
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| 89 |
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| 90 |
SET_FILE_BINARY(stdin);
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SET_FILE_BINARY(stdout);
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SET_DEFAULT_BINARY();
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| 93 |
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if (i <= argc-1 && strcmp(argv[i], "-"))
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inpfile = argv[i];
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if (i == argc-2 && strcmp(argv[i+1], "-"))
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outfile = argv[i+1];
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/* check for tone-mapping */
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if (expec != NULL) {
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if (reverse)
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goto userr;
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tmap2bmp(inpfile, outfile, expec, rgbp, gamcor);
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return(0);
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}
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setcolrgam(gamcor); /* set up conversion */
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if (reverse) {
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BMPReader *rdr;
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/* open BMP file or stream */
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if (inpfile != NULL)
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rdr = BMPopenInputFile(inpfile);
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else
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rdr = BMPopenInputStream(stdin);
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if (rdr == NULL) {
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fprintf(stderr, "%s: cannot open or recognize BMP\n",
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inpfile != NULL ? inpfile : "<stdin>");
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exit(1);
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}
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/* open Radiance output */
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if (outfile != NULL && freopen(outfile, "w", stdout) == NULL) {
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fprintf(stderr, "%s: cannot open for output\n",
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outfile);
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exit(1);
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}
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/* put Radiance header */
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newheader("RADIANCE", stdout);
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printargs(i, argv, stdout);
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fputformat(COLRFMT, stdout);
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putchar('\n');
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rs.xr = rdr->hdr->width;
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rs.yr = rdr->hdr->height;
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rs.rt = YMAJOR;
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/* write scans downward if we can */
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if (rdr->hdr->yIsDown || inpfile != NULL)
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rs.rt |= YDECR;
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fputsresolu(&rs, stdout);
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/* convert file */
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bmp2rad(rdr, stdout, !rdr->hdr->yIsDown && inpfile!=NULL);
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/* flush output */
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BMPcloseInput(rdr);
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if (fflush(stdout) < 0)
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quiterr("error writing Radiance output");
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} else {
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BMPHeader *hdr;
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BMPWriter *wtr;
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/* open Radiance input */
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if (inpfile != NULL && freopen(inpfile, "r", stdin) == NULL) {
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fprintf(stderr, "%s: cannot open input file\n",
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inpfile);
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exit(1);
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}
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/* get header info. */
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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 (hdr == NULL)
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quiterr("cannot initialize BMP header");
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/* set up output direction */
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hdr->yIsDown = ((outfile == NULL) | (hdr->compr == BI_RLE8));
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/* open BMP output */
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if (outfile != NULL)
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wtr = BMPopenOutputFile(outfile, hdr);
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else
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wtr = BMPopenOutputStream(stdout, hdr);
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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);
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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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BMPcloseOutput(wtr);
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}
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return(0); /* success */
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userr:
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fprintf(stderr,
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"Usage: %s [-b][-g gamma][-e spec][-p xr yr xg yg xb yb xw yw] [input|- [output]]\n",
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progname);
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fprintf(stderr,
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" or: %s -r [-g gamma][-e +/-stops] [input|- [output]]\n",
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progname);
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return(1);
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}
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/* print message and exit */
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static void
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quiterr(const char *err)
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{
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if (err != NULL) {
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fprintf(stderr, "%s: %s\n", progname, err);
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exit(1);
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}
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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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/* convert Radiance picture to BMP */
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static void
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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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double expcomp = pow(2.0, (double)bradj);
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if (rgbinp == TM_XYZPRIM)
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compxyz2rgbWBmat(xfm, monpri);
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else
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comprgb2rgbWBmat(xfm, rgbinp, monpri);
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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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| 263 |
if (inv) {
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| 264 |
y = bwr->hdr->height - 1;
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| 265 |
ystp = -1; yend = -1;
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} else {
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| 267 |
y = 0;
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| 268 |
ystp = 1; yend = bwr->hdr->height;
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| 269 |
}
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| 270 |
/* convert each scanline */
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| 271 |
for ( ; y != yend; y += ystp) {
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| 272 |
if (freadcolrs(scanin, bwr->hdr->width, rfp) < 0)
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| 273 |
quiterr("error reading Radiance picture");
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| 274 |
if (usexfm)
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| 275 |
for (x = bwr->hdr->width; x--; ) {
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| 276 |
colr_color(cval, scanin[x]);
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| 277 |
colortrans(cval, xfm, cval);
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| 278 |
setcolr(scanin[x], colval(cval,RED),
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| 279 |
colval(cval,GRN),
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| 280 |
colval(cval,BLU));
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| 281 |
}
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| 282 |
else if (bradj)
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| 283 |
shiftcolrs(scanin, bwr->hdr->width, bradj);
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| 284 |
if (monpri == NULL && rgbinp != TM_XYZPRIM)
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| 285 |
for (x = bwr->hdr->width; x--; )
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| 286 |
scanin[x][GRN] = normbright(scanin[x]);
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| 287 |
colrs_gambs(scanin, bwr->hdr->width);
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| 288 |
if (monpri == NULL)
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| 289 |
for (x = bwr->hdr->width; x--; )
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| 290 |
bwr->scanline[x] = scanin[x][GRN];
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else
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| 292 |
for (x = bwr->hdr->width; x--; ) {
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| 293 |
bwr->scanline[3*x] = scanin[x][BLU];
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| 294 |
bwr->scanline[3*x+1] = scanin[x][GRN];
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| 295 |
bwr->scanline[3*x+2] = scanin[x][RED];
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}
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bwr->yscan = y;
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| 298 |
x = BMPwriteScanline(bwr);
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| 299 |
if (x != BIR_OK)
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| 300 |
quiterr(BMPerrorMessage(x));
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| 301 |
}
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| 302 |
/* free scanline */
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| 303 |
free((void *)scanin);
|
| 304 |
}
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| 305 |
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| 306 |
/* convert BMP file to Radiance */
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| 307 |
static void
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| 308 |
bmp2rad(BMPReader *brd, FILE *rfp, int inv)
|
| 309 |
{
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| 310 |
COLR *scanout;
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| 311 |
int y, yend, ystp;
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| 312 |
int x;
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| 313 |
/* allocate scanline */
|
| 314 |
scanout = (COLR *)malloc(brd->hdr->width*sizeof(COLR));
|
| 315 |
if (scanout == NULL)
|
| 316 |
quiterr("out of memory in bmp2rad");
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| 317 |
/* convert image */
|
| 318 |
if (inv) {
|
| 319 |
y = brd->hdr->height - 1;
|
| 320 |
ystp = -1; yend = -1;
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| 321 |
} else {
|
| 322 |
y = 0;
|
| 323 |
ystp = 1; yend = brd->hdr->height;
|
| 324 |
}
|
| 325 |
/* convert each scanline */
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| 326 |
for ( ; y != yend; y += ystp) {
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| 327 |
x = BMPseekScanline(y, brd);
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| 328 |
if (x != BIR_OK)
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| 329 |
quiterr(BMPerrorMessage(x));
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| 330 |
for (x = brd->hdr->width; x--; ) {
|
| 331 |
RGBquad rgbq = BMPdecodePixel(x, brd);
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| 332 |
scanout[x][RED] = rgbq.r;
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| 333 |
scanout[x][GRN] = rgbq.g;
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| 334 |
scanout[x][BLU] = rgbq.b;
|
| 335 |
}
|
| 336 |
gambs_colrs(scanout, brd->hdr->width);
|
| 337 |
if (bradj)
|
| 338 |
shiftcolrs(scanout, brd->hdr->width, bradj);
|
| 339 |
if (fwritecolrs(scanout, brd->hdr->width, rfp) < 0)
|
| 340 |
quiterr("error writing Radiance picture");
|
| 341 |
}
|
| 342 |
/* clean up */
|
| 343 |
free((void *)scanout);
|
| 344 |
}
|
| 345 |
|
| 346 |
/* Tone-map and convert Radiance picture */
|
| 347 |
static void
|
| 348 |
tmap2bmp(char *fnin, char *fnout, char *expec, RGBPRIMP monpri, double gamval)
|
| 349 |
{
|
| 350 |
int tmflags;
|
| 351 |
BMPHeader *hdr;
|
| 352 |
BMPWriter *wtr;
|
| 353 |
FILE *fp;
|
| 354 |
int xr, yr;
|
| 355 |
uby8 *pa;
|
| 356 |
int i;
|
| 357 |
/* check tone-mapping spec */
|
| 358 |
i = strlen(expec);
|
| 359 |
if (i && !strncmp(expec, "auto", i))
|
| 360 |
tmflags = TM_F_CAMERA;
|
| 361 |
else if (i && !strncmp(expec, "human", i))
|
| 362 |
tmflags = TM_F_HUMAN & ~TM_F_UNIMPL;
|
| 363 |
else if (i && !strncmp(expec, "linear", i))
|
| 364 |
tmflags = TM_F_LINEAR;
|
| 365 |
else
|
| 366 |
quiterr("illegal exposure specification (auto|human|linear)");
|
| 367 |
if (monpri == NULL) {
|
| 368 |
tmflags |= TM_F_BW;
|
| 369 |
monpri = stdprims;
|
| 370 |
}
|
| 371 |
/* open Radiance input */
|
| 372 |
if (fnin == NULL)
|
| 373 |
fp = stdin;
|
| 374 |
else if ((fp = fopen(fnin, "r")) == NULL) {
|
| 375 |
fprintf(stderr, "%s: cannot open\n", fnin);
|
| 376 |
exit(1);
|
| 377 |
}
|
| 378 |
/* tone-map picture */
|
| 379 |
if (tmMapPicture(&pa, &xr, &yr, tmflags, monpri, gamval,
|
| 380 |
0., 0., fnin, fp) != TM_E_OK)
|
| 381 |
exit(1);
|
| 382 |
/* initialize BMP header */
|
| 383 |
if (tmflags & TM_F_BW) {
|
| 384 |
hdr = BMPmappedHeader(xr, yr, 0, 256);
|
| 385 |
if (fnout != NULL)
|
| 386 |
hdr->compr = BI_RLE8;
|
| 387 |
} else
|
| 388 |
hdr = BMPtruecolorHeader(xr, yr, 0);
|
| 389 |
if (hdr == NULL)
|
| 390 |
quiterr("cannot initialize BMP header");
|
| 391 |
/* open BMP output */
|
| 392 |
if (fnout != NULL)
|
| 393 |
wtr = BMPopenOutputFile(fnout, hdr);
|
| 394 |
else
|
| 395 |
wtr = BMPopenOutputStream(stdout, hdr);
|
| 396 |
if (wtr == NULL)
|
| 397 |
quiterr("cannot allocate writer structure");
|
| 398 |
/* write to BMP file */
|
| 399 |
while (wtr->yscan < yr) {
|
| 400 |
uby8 *scn = pa + xr*((tmflags & TM_F_BW) ? 1 : 3)*
|
| 401 |
(yr-1 - wtr->yscan);
|
| 402 |
if (tmflags & TM_F_BW)
|
| 403 |
memcpy((void *)wtr->scanline, (void *)scn, xr);
|
| 404 |
else
|
| 405 |
for (i = xr; i--; ) {
|
| 406 |
wtr->scanline[3*i] = scn[3*i+BLU];
|
| 407 |
wtr->scanline[3*i+1] = scn[3*i+GRN];
|
| 408 |
wtr->scanline[3*i+2] = scn[3*i+RED];
|
| 409 |
}
|
| 410 |
if ((i = BMPwriteScanline(wtr)) != BIR_OK)
|
| 411 |
quiterr(BMPerrorMessage(i));
|
| 412 |
}
|
| 413 |
/* flush output */
|
| 414 |
if (fflush((FILE *)wtr->c_data) < 0)
|
| 415 |
quiterr("error writing BMP output");
|
| 416 |
/* clean up */
|
| 417 |
if (fnin != NULL)
|
| 418 |
fclose(fp);
|
| 419 |
free((void *)pa);
|
| 420 |
BMPcloseOutput(wtr);
|
| 421 |
}
|
