| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: ra_rgbe.c,v 2.23 2024/09/10 20:24:42 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* program to convert from RADIANCE RLE to flat format |
| 6 |
*/ |
| 7 |
|
| 8 |
#include <math.h> |
| 9 |
|
| 10 |
#include "platform.h" |
| 11 |
#include "rtio.h" |
| 12 |
#include "paths.h" |
| 13 |
#include "color.h" |
| 14 |
#include "resolu.h" |
| 15 |
|
| 16 |
#define dumpheader(fp) putbinary(headlines, 1, headlen, fp) |
| 17 |
|
| 18 |
int bradj = 0; /* brightness adjustment */ |
| 19 |
int doflat = 1; /* produce flat file */ |
| 20 |
int force = 0; /* force file overwrite? */ |
| 21 |
int findframe = 0; /* find a specific frame? */ |
| 22 |
int frameno = 0; /* current frame number */ |
| 23 |
int fmterr = 0; /* got input format error */ |
| 24 |
char *headlines = NULL; /* current header info. */ |
| 25 |
int headlen1 = 0; /* length of initial frame header */ |
| 26 |
int headlen = 0; /* current header length */ |
| 27 |
char fmt[MAXFMTLEN]; /* input format */ |
| 28 |
|
| 29 |
char *progname; |
| 30 |
|
| 31 |
static gethfunc addhline; |
| 32 |
static int transfer(char *ospec); |
| 33 |
static int loadheader(FILE *fp); |
| 34 |
|
| 35 |
|
| 36 |
int |
| 37 |
main(int argc, char *argv[]) |
| 38 |
{ |
| 39 |
char *ospec; |
| 40 |
int i; |
| 41 |
|
| 42 |
progname = argv[0]; |
| 43 |
|
| 44 |
for (i = 1; i < argc; i++) |
| 45 |
if (argv[i][0] == '-') |
| 46 |
switch (argv[i][1]) { |
| 47 |
case 'r': |
| 48 |
doflat = !doflat; |
| 49 |
break; |
| 50 |
case 'e': |
| 51 |
if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
| 52 |
goto userr; |
| 53 |
bradj = atoi(argv[++i]); |
| 54 |
break; |
| 55 |
case 'n': |
| 56 |
findframe = atoi(argv[++i]); |
| 57 |
break; |
| 58 |
case 'f': |
| 59 |
force++; |
| 60 |
break; |
| 61 |
case '\0': |
| 62 |
goto gotfile; |
| 63 |
default: |
| 64 |
goto userr; |
| 65 |
} |
| 66 |
else |
| 67 |
break; |
| 68 |
gotfile: |
| 69 |
if (i < argc-2) |
| 70 |
goto userr; |
| 71 |
if (i <= argc-1 && strcmp(argv[i], "-") && |
| 72 |
freopen(argv[i], "r", stdin) == NULL) { |
| 73 |
fprintf(stderr, "%s: can't open input \"%s\"\n", |
| 74 |
progname, argv[i]); |
| 75 |
exit(1); |
| 76 |
} |
| 77 |
SET_FILE_BINARY(stdin); |
| 78 |
ospec = i==argc-2 ? argv[i+1] : (char *)NULL; |
| 79 |
while (transfer(ospec)) |
| 80 |
; |
| 81 |
exit(0); |
| 82 |
userr: |
| 83 |
fprintf(stderr, |
| 84 |
"Usage: %s [-r][-e +/-stops][-f][-n frame] [input [outspec]]\n", |
| 85 |
progname); |
| 86 |
exit(1); |
| 87 |
} |
| 88 |
|
| 89 |
|
| 90 |
static int |
| 91 |
transfer( /* transfer a Radiance picture */ |
| 92 |
char *ospec |
| 93 |
) |
| 94 |
{ |
| 95 |
char oname[PATH_MAX]; |
| 96 |
FILE *fp; |
| 97 |
int order; |
| 98 |
int xmax, ymax; |
| 99 |
COLR *scanin; |
| 100 |
int y; |
| 101 |
/* get header info. */ |
| 102 |
if (!(y = loadheader(stdin))) |
| 103 |
return(0); |
| 104 |
if (y < 0 || (order = fgetresolu(&xmax, &ymax, stdin)) < 0) { |
| 105 |
fprintf(stderr, "%s: bad input format\n", progname); |
| 106 |
exit(1); |
| 107 |
} |
| 108 |
/* did we pass the target frame? */ |
| 109 |
if (findframe && findframe < frameno) |
| 110 |
return(0); |
| 111 |
/* allocate scanline */ |
| 112 |
scanin = (COLR *)malloc(xmax*sizeof(COLR)); |
| 113 |
if (scanin == NULL) { |
| 114 |
perror(progname); |
| 115 |
exit(1); |
| 116 |
} |
| 117 |
/* skip frame? */ |
| 118 |
if (findframe > frameno) { |
| 119 |
if (NCSAMP > 3) { |
| 120 |
if (fseek(stdin, ymax*xmax*LSCOLR, SEEK_CUR) < 0) { |
| 121 |
perror(progname); |
| 122 |
exit(1); |
| 123 |
} |
| 124 |
} else |
| 125 |
for (y = ymax; y--; ) |
| 126 |
if (freadcolrs(scanin, xmax, stdin) < 0) { |
| 127 |
fprintf(stderr, |
| 128 |
"%s: error reading input picture\n", |
| 129 |
progname); |
| 130 |
exit(1); |
| 131 |
} |
| 132 |
free(scanin); |
| 133 |
return(1); |
| 134 |
} |
| 135 |
/* open output file/command */ |
| 136 |
if (ospec == NULL) { |
| 137 |
strcpy(oname, "<stdout>"); |
| 138 |
fp = stdout; |
| 139 |
} else { |
| 140 |
sprintf(oname, ospec, frameno); |
| 141 |
if (oname[0] == '!') { |
| 142 |
if ((fp = popen(oname+1, "w")) == NULL) { |
| 143 |
fprintf(stderr, "%s: cannot start \"%s\"\n", |
| 144 |
progname, oname); |
| 145 |
exit(1); |
| 146 |
} |
| 147 |
} else { |
| 148 |
if (!force && access(oname, 0) >= 0) { |
| 149 |
fprintf(stderr, |
| 150 |
"%s: output file \"%s\" exists\n", |
| 151 |
progname, oname); |
| 152 |
exit(1); |
| 153 |
} |
| 154 |
if ((fp = fopen(oname, "w")) == NULL) { |
| 155 |
fprintf(stderr, "%s: ", progname); |
| 156 |
perror(oname); |
| 157 |
exit(1); |
| 158 |
} |
| 159 |
} |
| 160 |
} |
| 161 |
SET_FILE_BINARY(fp); |
| 162 |
newheader("RADIANCE", fp); /* put out header */ |
| 163 |
dumpheader(fp); |
| 164 |
fputs(progname, fp); |
| 165 |
if (bradj) |
| 166 |
fprintf(fp, " -e %+d", bradj); |
| 167 |
if (!doflat) |
| 168 |
fputs(" -r", fp); |
| 169 |
fputc('\n', fp); |
| 170 |
if (bradj) |
| 171 |
fputexpos(pow(2.0, (double)bradj), fp); |
| 172 |
if (frameno) |
| 173 |
fprintf(fp, "FRAME=%d\n", frameno); |
| 174 |
if (fmt[0]) |
| 175 |
fputformat(fmt, fp); |
| 176 |
fputc('\n', fp); |
| 177 |
fputresolu(order, xmax, ymax, fp); |
| 178 |
/* transfer picture */ |
| 179 |
for (y = ymax; y--; ) { |
| 180 |
if (fread2colrs(scanin, xmax, stdin, NCSAMP, WLPART) < 0) { |
| 181 |
fprintf(stderr, "%s: error reading input picture\n", |
| 182 |
progname); |
| 183 |
exit(1); |
| 184 |
} |
| 185 |
if (bradj) |
| 186 |
shiftcolrs(scanin, xmax, bradj); |
| 187 |
if (doflat ? (putbinary(scanin, sizeof(COLR), xmax, fp) != xmax) : |
| 188 |
(fwritecolrs(scanin, xmax, fp) < 0)) |
| 189 |
goto writerr; |
| 190 |
} |
| 191 |
free(scanin); /* clean up */ |
| 192 |
if (fflush(fp) == EOF) |
| 193 |
goto writerr; |
| 194 |
if (oname[0] == '!') { |
| 195 |
if (pclose(fp) != 0) { |
| 196 |
fprintf(stderr, "%s: bad status from \"%s\"\n", |
| 197 |
progname, oname); |
| 198 |
exit(1); |
| 199 |
} |
| 200 |
} else if (ospec != NULL) |
| 201 |
fclose(fp); |
| 202 |
return(1); |
| 203 |
writerr: |
| 204 |
fprintf(stderr, "%s: error writing output to \"%s\"\n", |
| 205 |
progname, oname); |
| 206 |
exit(1); |
| 207 |
} |
| 208 |
|
| 209 |
|
| 210 |
static int |
| 211 |
addhline( /* add a line to our info. header */ |
| 212 |
char *s, |
| 213 |
void *p |
| 214 |
) |
| 215 |
{ |
| 216 |
int n; |
| 217 |
|
| 218 |
if (isheadid(s)) |
| 219 |
return(0); |
| 220 |
if (!strncmp(s, "FRAME=", 6)) { |
| 221 |
frameno = atoi(s+6); |
| 222 |
return(0); |
| 223 |
} |
| 224 |
if (formatval(fmt, s)) { |
| 225 |
if (!strcmp(fmt, SPECFMT)) |
| 226 |
strcpy(fmt, COLRFMT); |
| 227 |
else |
| 228 |
fmterr += !globmatch(PICFMT, fmt); |
| 229 |
return(0); |
| 230 |
} |
| 231 |
if (isncomp(s)) { |
| 232 |
NCSAMP = ncompval(s); |
| 233 |
return(NCSAMP - 3); |
| 234 |
} |
| 235 |
if (iswlsplit(s)) { |
| 236 |
wlsplitval(WLPART, s); |
| 237 |
return(0); |
| 238 |
} |
| 239 |
n = strlen(s); |
| 240 |
if (headlen) |
| 241 |
headlines = (char *)realloc((void *)headlines, headlen+n+1); |
| 242 |
else |
| 243 |
headlines = (char *)malloc(n+1); |
| 244 |
if (headlines == NULL) { |
| 245 |
perror(progname); |
| 246 |
exit(1); |
| 247 |
} |
| 248 |
strcpy(headlines+headlen, s); |
| 249 |
headlen += n; |
| 250 |
return(0); |
| 251 |
} |
| 252 |
|
| 253 |
|
| 254 |
static int |
| 255 |
loadheader( /* load an info. header into memory */ |
| 256 |
FILE *fp |
| 257 |
) |
| 258 |
{ |
| 259 |
fmterr = 0; frameno = 0; |
| 260 |
/* revert to initial header length */ |
| 261 |
if (!headlen1) headlen1 = headlen; |
| 262 |
else headlen = headlen1; |
| 263 |
|
| 264 |
if (getheader(fp, addhline, NULL) < 0) |
| 265 |
return(0); |
| 266 |
if (fmterr) |
| 267 |
return(-1); |
| 268 |
return(1); |
| 269 |
} |
