| 1 |
#ifndef lint
|
| 2 |
static const char RCSid[] = "$Id: rcrop.c,v 1.11 2022/03/16 16:48:39 greg Exp $";
|
| 3 |
#endif
|
| 4 |
/*
|
| 5 |
* rcrop.c - crop a Radiance picture or matrix data
|
| 6 |
*/
|
| 7 |
|
| 8 |
#include <ctype.h>
|
| 9 |
#include "rtio.h"
|
| 10 |
#include "platform.h"
|
| 11 |
#include "color.h"
|
| 12 |
#include "fvect.h"
|
| 13 |
#include "view.h"
|
| 14 |
|
| 15 |
char *progname; /* global argv[0] */
|
| 16 |
|
| 17 |
VIEW vw = STDVIEW;
|
| 18 |
int gotvw = 0;
|
| 19 |
char fmt[MAXFMTLEN] = "ascii"; /* assumed when unspecified */
|
| 20 |
int ncomp = 0;
|
| 21 |
RESOLU res;
|
| 22 |
int rmin, cmin, nrows, ncols;
|
| 23 |
|
| 24 |
/* Process header line, copying to stdout when appropriate */
|
| 25 |
static int
|
| 26 |
headline(char *s, void *p)
|
| 27 |
{
|
| 28 |
if (formatval(fmt, s))
|
| 29 |
return(0);
|
| 30 |
if (!strncmp(s, "NCOMP=", 6)) {
|
| 31 |
ncomp = atoi(s+6);
|
| 32 |
return(-(ncomp <= 0));
|
| 33 |
}
|
| 34 |
if (!strncmp(s, "NROWS=", 6)) {
|
| 35 |
res.rt = PIXSTANDARD;
|
| 36 |
res.yr = atoi(s+6);
|
| 37 |
return(-(res.yr <= 0));
|
| 38 |
}
|
| 39 |
if (!strncmp(s, "NCOLS=", 6)) {
|
| 40 |
res.rt = PIXSTANDARD;
|
| 41 |
res.xr = atoi(s+6);
|
| 42 |
return(-(res.xr <= 0));
|
| 43 |
}
|
| 44 |
if (isview(s)) {
|
| 45 |
gotvw += sscanview(&vw, s);
|
| 46 |
return(0);
|
| 47 |
}
|
| 48 |
fputs(s, stdout); /* copy other header info. */
|
| 49 |
return(0);
|
| 50 |
}
|
| 51 |
|
| 52 |
/* Copy routine for COLR data */
|
| 53 |
static int
|
| 54 |
colr_copyf(FILE *fp)
|
| 55 |
{
|
| 56 |
const int width = scanlen(&res);
|
| 57 |
COLR *scan = (COLR *)malloc(sizeof(COLR)*width);
|
| 58 |
int y;
|
| 59 |
|
| 60 |
if (!scan) {
|
| 61 |
fputs(progname, stderr);
|
| 62 |
fputs(": out of memory!\n", stderr);
|
| 63 |
return(0);
|
| 64 |
}
|
| 65 |
for (y = 0; y < rmin; y++) /* initial skip */
|
| 66 |
if (freadcolrs(scan, width, fp) < 0)
|
| 67 |
goto readerr;
|
| 68 |
/* scanlines to copy */
|
| 69 |
for (y = 0; y < nrows; y++) {
|
| 70 |
if (freadcolrs(scan, width, fp) < 0)
|
| 71 |
goto readerr;
|
| 72 |
if (fwritecolrs(scan+cmin, ncols, stdout) < 0)
|
| 73 |
goto writerr;
|
| 74 |
}
|
| 75 |
free(scan);
|
| 76 |
if (fflush(stdout) == 0)
|
| 77 |
return(1);
|
| 78 |
writerr:
|
| 79 |
fputs(progname, stderr);
|
| 80 |
fputs(": error writing picture\n", stderr);
|
| 81 |
return(0);
|
| 82 |
readerr:
|
| 83 |
fputs(progname, stderr);
|
| 84 |
fputs(": error reading picture\n", stderr);
|
| 85 |
return(0);
|
| 86 |
}
|
| 87 |
|
| 88 |
/* Copy routine for binary data (asize = sizeof(type)) */
|
| 89 |
static int
|
| 90 |
binary_copyf(FILE *fp, int asize)
|
| 91 |
{
|
| 92 |
const int skip_thresh = 8192;
|
| 93 |
const size_t elsiz = asize*ncomp;
|
| 94 |
const int width = scanlen(&res);
|
| 95 |
const long skip_len = (width-ncols)*elsiz;
|
| 96 |
char *buf;
|
| 97 |
int y;
|
| 98 |
/* check if fseek() useful */
|
| 99 |
if (skip_len > skip_thresh &&
|
| 100 |
fseek(fp, (rmin*width + cmin)*elsiz, SEEK_CUR) == 0) {
|
| 101 |
buf = (char *)malloc(ncols*elsiz);
|
| 102 |
if (!buf)
|
| 103 |
goto memerr;
|
| 104 |
for (y = nrows; y-- > 0; ) {
|
| 105 |
if (getbinary(buf, elsiz, ncols, fp) != ncols)
|
| 106 |
goto readerr;
|
| 107 |
if (putbinary(buf, elsiz, ncols, stdout) != ncols)
|
| 108 |
goto writerr;
|
| 109 |
if (y && fseek(fp, skip_len, SEEK_CUR) < 0) {
|
| 110 |
fputs(progname, stderr);
|
| 111 |
fputs(": unexpected seek error on input\n", stderr);
|
| 112 |
return(0);
|
| 113 |
}
|
| 114 |
}
|
| 115 |
free(buf);
|
| 116 |
if (fflush(stdout) == EOF)
|
| 117 |
goto writerr;
|
| 118 |
return(1); /* success! */
|
| 119 |
} /* else need to read it all... */
|
| 120 |
buf = (char *)malloc(width*elsiz);
|
| 121 |
if (!buf)
|
| 122 |
goto memerr;
|
| 123 |
/* skip rows as requested */
|
| 124 |
if (skip_len > skip_thresh ||
|
| 125 |
(rmin && fseek(fp, rmin*width*elsiz, SEEK_CUR) < 0))
|
| 126 |
for (y = 0; y < rmin; y++)
|
| 127 |
if (getbinary(buf, elsiz, width, fp) != width)
|
| 128 |
goto readerr;
|
| 129 |
for (y = 0; y < nrows; y++) { /* copy portion */
|
| 130 |
if (getbinary(buf, elsiz, width, fp) != width)
|
| 131 |
goto readerr;
|
| 132 |
if (putbinary(buf+cmin*elsiz, elsiz, ncols, stdout) != ncols)
|
| 133 |
goto writerr;
|
| 134 |
}
|
| 135 |
free(buf); /* we're done */
|
| 136 |
if (fflush(stdout) == 0)
|
| 137 |
return(1);
|
| 138 |
writerr:
|
| 139 |
fputs(progname, stderr);
|
| 140 |
fputs(": error writing binary data\n", stderr);
|
| 141 |
return(0);
|
| 142 |
readerr:
|
| 143 |
fputs(progname, stderr);
|
| 144 |
fputs(": error reading binary data\n", stderr);
|
| 145 |
return(0);
|
| 146 |
memerr:
|
| 147 |
fputs(progname, stderr);
|
| 148 |
fputs(": out of memory!\n", stderr);
|
| 149 |
return(0);
|
| 150 |
}
|
| 151 |
|
| 152 |
/* Read (and copy) specified number of white-space-separated words */
|
| 153 |
static int
|
| 154 |
readwords(FILE *finp, int nwords, FILE *fout)
|
| 155 |
{
|
| 156 |
while (nwords-- > 0) {
|
| 157 |
int c;
|
| 158 |
do {
|
| 159 |
c = getc(finp);
|
| 160 |
} while (isspace(c));
|
| 161 |
if (c == EOF)
|
| 162 |
return(-1);
|
| 163 |
if (fout && fputc(' ', fout) == EOF)
|
| 164 |
return(-1);
|
| 165 |
do {
|
| 166 |
if (fout)
|
| 167 |
putc(c, fout);
|
| 168 |
} while ((c = getc(finp)) != EOF && !isspace(c));
|
| 169 |
}
|
| 170 |
return(0);
|
| 171 |
}
|
| 172 |
|
| 173 |
/* Copy routine for ascii data */
|
| 174 |
static int
|
| 175 |
ascii_copyf(FILE *fp)
|
| 176 |
{
|
| 177 |
const int width = scanlen(&res);
|
| 178 |
int x, y;
|
| 179 |
|
| 180 |
SET_FILE_TEXT(fp); /* started as binary */
|
| 181 |
SET_FILE_TEXT(stdout);
|
| 182 |
/* skip rows as requested */
|
| 183 |
if (readwords(fp, rmin*width*ncomp, NULL) < 0)
|
| 184 |
goto io_err;
|
| 185 |
for (y = 0; y < nrows; y++) { /* copy part */
|
| 186 |
if (readwords(fp, cmin*ncomp, NULL) < 0)
|
| 187 |
goto io_err;
|
| 188 |
if (readwords(fp, ncols*ncomp, stdout) < 0)
|
| 189 |
goto io_err;
|
| 190 |
fputc('\n', stdout); /* newline per row */
|
| 191 |
if (readwords(fp, (width-ncols-cmin)*ncomp, NULL) < 0)
|
| 192 |
goto io_err;
|
| 193 |
}
|
| 194 |
if (fflush(stdout) == 0)
|
| 195 |
return(1);
|
| 196 |
io_err:
|
| 197 |
fputs(progname, stderr);
|
| 198 |
fputs(": error copying ascii data\n", stderr);
|
| 199 |
return(0);
|
| 200 |
}
|
| 201 |
|
| 202 |
/* Adjust (crop) our view */
|
| 203 |
static int
|
| 204 |
adjust_view(void)
|
| 205 |
{
|
| 206 |
double p0[2], p1[2];
|
| 207 |
const char *err;
|
| 208 |
|
| 209 |
if (res.rt & YMAJOR) {
|
| 210 |
p0[0] = cmin/(double)res.xr;
|
| 211 |
p0[1] = rmin/(double)res.yr;
|
| 212 |
p1[0] = (cmin+ncols)/(double)res.xr;
|
| 213 |
p1[1] = (rmin+nrows)/(double)res.yr;
|
| 214 |
} else {
|
| 215 |
p0[0] = rmin/(double)res.xr;
|
| 216 |
p0[1] = cmin/(double)res.yr;
|
| 217 |
p1[0] = (rmin+nrows)/(double)res.xr;
|
| 218 |
p1[1] = (cmin+ncols)/(double)res.yr;
|
| 219 |
}
|
| 220 |
if (res.rt & XDECR) {
|
| 221 |
p0[0] = 1. - p0[0];
|
| 222 |
p1[0] = 1. - p1[0];
|
| 223 |
}
|
| 224 |
if (res.rt & YDECR) {
|
| 225 |
p0[1] = 1. - p0[1];
|
| 226 |
p1[1] = 1. - p1[1];
|
| 227 |
}
|
| 228 |
err = cropview(&vw, p0[0], p0[1], p1[0], p1[1]);
|
| 229 |
|
| 230 |
if (!err)
|
| 231 |
return(1); /* success! */
|
| 232 |
|
| 233 |
fputs(progname, stderr);
|
| 234 |
fputs(": view error - ", stderr);
|
| 235 |
fputs(err, stderr);
|
| 236 |
fputc('\n', stderr);
|
| 237 |
return(0); /* something went wrong */
|
| 238 |
}
|
| 239 |
|
| 240 |
|
| 241 |
/* Main routine -- load header and call processor */
|
| 242 |
int
|
| 243 |
main(int argc, char *argv[])
|
| 244 |
{
|
| 245 |
FILE *fp = stdin;
|
| 246 |
int asiz = 0;
|
| 247 |
int gotdims;
|
| 248 |
|
| 249 |
progname = argv[0];
|
| 250 |
/* get input and output */
|
| 251 |
if ((argc < 5) | (argc > 7))
|
| 252 |
goto usage;
|
| 253 |
if (!isint(argv[1]) | !isint(argv[2]) |
|
| 254 |
!isint(argv[3]) | !isint(argv[4]))
|
| 255 |
goto usage;
|
| 256 |
rmin = atoi(argv[1]);
|
| 257 |
cmin = atoi(argv[2]);
|
| 258 |
nrows = atoi(argv[3]);
|
| 259 |
ncols = atoi(argv[4]);
|
| 260 |
if ((rmin < 0) | (cmin < 0) | (nrows < 0) | (ncols < 0))
|
| 261 |
goto usage;
|
| 262 |
if (argc <= 5)
|
| 263 |
SET_FILE_BINARY(fp);
|
| 264 |
else if (!(fp = fopen(argv[5], "rb"))) {
|
| 265 |
fputs(argv[5], stderr);
|
| 266 |
fputs(": cannot open for reading\n", stderr);
|
| 267 |
return(1);
|
| 268 |
}
|
| 269 |
if (argc <= 6)
|
| 270 |
SET_FILE_BINARY(stdout);
|
| 271 |
else if (!freopen(argv[6], "wb", stdout)) {
|
| 272 |
fputs(argv[6], stderr);
|
| 273 |
fputs(": cannot open for writing\n", stderr);
|
| 274 |
return(1);
|
| 275 |
}
|
| 276 |
#ifdef getc_unlocked /* avoid stupid semaphores */
|
| 277 |
flockfile(fp);
|
| 278 |
flockfile(stdout);
|
| 279 |
#endif
|
| 280 |
/* process information header */
|
| 281 |
if (getheader(fp, headline, NULL) < 0) {
|
| 282 |
fputs(progname, stderr);
|
| 283 |
fputs(": bad input header\n", stderr);
|
| 284 |
return(1);
|
| 285 |
}
|
| 286 |
gotdims = (res.rt == PIXSTANDARD) & (res.xr > 0) & (res.yr > 0);
|
| 287 |
if (!gotdims && !fgetsresolu(&res, fp)) {
|
| 288 |
fputs(progname, stderr);
|
| 289 |
fputs(": missing input dimensions\n", stderr);
|
| 290 |
return(1);
|
| 291 |
}
|
| 292 |
if (!nrows)
|
| 293 |
nrows = numscans(&res) - rmin;
|
| 294 |
if (!ncols)
|
| 295 |
ncols = scanlen(&res) - cmin;
|
| 296 |
if ((nrows <= 0) | (ncols <= 0) |
|
| 297 |
(rmin+nrows > numscans(&res)) |
|
| 298 |
(cmin+ncols > scanlen(&res))) {
|
| 299 |
fputs(progname, stderr);
|
| 300 |
fputs(": illegal crop\n", stderr);
|
| 301 |
return(1);
|
| 302 |
}
|
| 303 |
printargs(5, argv, stdout); /* add to header */
|
| 304 |
if (gotvw && adjust_view()) {
|
| 305 |
fputs(VIEWSTR, stdout); /* write adjusted view */
|
| 306 |
fprintview(&vw, stdout);
|
| 307 |
fputc('\n', stdout);
|
| 308 |
}
|
| 309 |
if (gotdims) /* dimensions + format */
|
| 310 |
printf("NROWS=%d\nNCOLS=%d\n", nrows, ncols);
|
| 311 |
if (ncomp)
|
| 312 |
printf("NCOMP=%d\n", ncomp);
|
| 313 |
fputformat(fmt, stdout); /* will align bytes if it can */
|
| 314 |
fputc('\n', stdout); /* end of new header */
|
| 315 |
if (!gotdims) { /* add resolution string? */
|
| 316 |
RESOLU newres;
|
| 317 |
if (res.rt & YMAJOR) {
|
| 318 |
newres.xr = ncols;
|
| 319 |
newres.yr = nrows;
|
| 320 |
} else {
|
| 321 |
newres.xr = nrows;
|
| 322 |
newres.yr = ncols;
|
| 323 |
}
|
| 324 |
newres.rt = res.rt;
|
| 325 |
fputsresolu(&newres, stdout);
|
| 326 |
}
|
| 327 |
/* call appropriate processor */
|
| 328 |
if (!strcmp(fmt, "float")) {
|
| 329 |
asiz = sizeof(float);
|
| 330 |
} else if (!strcmp(fmt, "double")) {
|
| 331 |
asiz = sizeof(double);
|
| 332 |
} else if (!strcmp(fmt, "32-bit_encoded_normal")) {
|
| 333 |
asiz = 4;
|
| 334 |
ncomp = 1;
|
| 335 |
} else if (!strcmp(fmt, "16-bit_encoded_depth")) {
|
| 336 |
asiz = 2;
|
| 337 |
ncomp = 1;
|
| 338 |
} else if (globmatch(PICFMT, fmt)) {
|
| 339 |
asiz = -1;
|
| 340 |
if (!ncomp) ncomp = 3;
|
| 341 |
else ncomp *= (ncomp == 3);
|
| 342 |
} else if (strcasecmp(fmt, "ascii")) {
|
| 343 |
fputs(progname, stderr);
|
| 344 |
fputs(": unsupported format - ", stderr);
|
| 345 |
fputs(fmt, stderr);
|
| 346 |
fputc('\n', stderr);
|
| 347 |
return(1);
|
| 348 |
}
|
| 349 |
if (ncomp <= 0) {
|
| 350 |
fputs(progname, stderr);
|
| 351 |
fputs(": illegal number of components\n", stderr);
|
| 352 |
return(1);
|
| 353 |
}
|
| 354 |
if (!(asiz < 0 ? colr_copyf(fp) :
|
| 355 |
asiz ? binary_copyf(fp, asiz) : ascii_copyf(fp)))
|
| 356 |
return(1);
|
| 357 |
/* need to consume the rest? */
|
| 358 |
if (fp == stdin && rmin+nrows < numscans(&res) &&
|
| 359 |
fseek(fp, 0L, SEEK_END) < 0)
|
| 360 |
while (getc(fp) != EOF)
|
| 361 |
;
|
| 362 |
return(0);
|
| 363 |
usage:
|
| 364 |
fputs("Usage: ", stderr);
|
| 365 |
fputs(progname, stderr);
|
| 366 |
fputs(" row0 col0 nrows ncols [input [output]]\n", stderr);
|
| 367 |
return(1);
|
| 368 |
}
|
