| 1 |
greg |
1.1 |
#ifndef lint |
| 2 |
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static const char RCSid[] = "$Id$"; |
| 3 |
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#endif |
| 4 |
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/* |
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* rcrop.c - crop a Radiance picture or matrix data |
| 6 |
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*/ |
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#include <ctype.h> |
| 9 |
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#include "rtio.h" |
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#include "platform.h" |
| 11 |
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#include "color.h" |
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#include "fvect.h" |
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#include "view.h" |
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#define MAXWORD 64 /* maximum word (number) length */ |
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char *progname; /* global argv[0] */ |
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VIEW vw = STDVIEW; |
| 20 |
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int gotvw = 0; |
| 21 |
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char fmt[MAXFMTLEN] = "Unknown"; |
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int ncomp = 0; |
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RESOLU res; |
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int rmin, cmin, nrows, ncols; |
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/* Process header line, copying to stdout when appropriate */ |
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static int |
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headline(char *s, void *p) |
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{ |
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if (formatval(fmt, s)) |
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return(0); |
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if (!strncmp(s, "NCOMP=", 6)) { |
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ncomp = atoi(s+6); |
| 34 |
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return(-(ncomp <= 0)); |
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} |
| 36 |
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if (!strncmp(s, "NROWS=", 6)) { |
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res.rt = PIXSTANDARD; |
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res.yr = atoi(s+6); |
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return(-(res.yr <= 0)); |
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} |
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if (!strncmp(s, "NCOLS=", 6)) { |
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res.rt = PIXSTANDARD; |
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res.xr = atoi(s+6); |
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return(-(res.xr <= 0)); |
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} |
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if (isview(s)) { |
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gotvw += sscanview(&vw, s); |
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return(0); |
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} |
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fputs(s, stdout); /* copy other header info. */ |
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return(0); |
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} |
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/* Copy routine for COLR data */ |
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static int |
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colr_copyf(FILE *fp) |
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{ |
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const int width = scanlen(&res); |
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COLR *scan = (COLR *)malloc(sizeof(COLR)*width); |
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int y; |
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if (!scan) { |
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fputs(progname, stderr); |
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fputs(": out of memory!\n", stderr); |
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return(0); |
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} |
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for (y = 0; y < rmin; y++) /* initial skip */ |
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if (freadcolrs(scan, width, fp) < 0) |
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goto readerr; |
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/* scanlines to copy */ |
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for (y = 0; y < nrows; y++) { |
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if (freadcolrs(scan, width, fp) < 0) |
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goto readerr; |
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if (fwritecolrs(scan+cmin, ncols, stdout) < 0) |
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goto writerr; |
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} |
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free(scan); |
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if (fflush(stdout) == 0) |
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return(1); |
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writerr: |
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fputs(progname, stderr); |
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fputs(": error writing scanline\n", stderr); |
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return(0); |
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readerr: |
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fputs(progname, stderr); |
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fputs(": error reading scanline\n", stderr); |
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return(0); |
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} |
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/* Copy routine for binary data (asize = sizeof(type)) */ |
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static int |
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binary_copyf(FILE *fp, int asize) |
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{ |
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const size_t elsiz = asize*ncomp; |
| 95 |
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const int width = scanlen(&res); |
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char *buf = (char *)malloc(elsiz*width); |
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int y; |
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if (!buf) { |
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fputs(progname, stderr); |
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fputs(": out of memory!\n", stderr); |
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return(0); |
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} |
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/* skip rows as requested */ |
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if (rmin && fseek(fp, rmin*width*elsiz, SEEK_CUR) < 0) { |
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for (y = 0; y < rmin; y++) |
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if (getbinary(buf, elsiz, width, fp) != width) |
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goto readerr; |
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} |
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for (y = 0; y < nrows; y++) { /* copy portion */ |
| 111 |
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if (getbinary(buf, elsiz, width, fp) != width) |
| 112 |
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goto readerr; |
| 113 |
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if (putbinary(buf+cmin*elsiz, elsiz, ncols, stdout) != ncols) |
| 114 |
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goto writerr; |
| 115 |
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} |
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free(buf); /* we're done */ |
| 117 |
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if (fflush(stdout) == 0) |
| 118 |
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return(1); |
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writerr: |
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fputs(progname, stderr); |
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fputs(": error writing binary data\n", stderr); |
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return(0); |
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readerr: |
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fputs(progname, stderr); |
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fputs(": error reading binary data\n", stderr); |
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return(0); |
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} |
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/* Read (and copy) specified number of white-space-separated words */ |
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static int |
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readwords(FILE *finp, int nwords, FILE *fout) |
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{ |
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while (nwords-- > 0) { |
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int c; |
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do { |
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c = getc(finp); |
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} while (isspace(c)); |
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if (c == EOF) |
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return(-1); |
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if (fout && fputc(' ', fout) == EOF) |
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return(-1); |
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do { |
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if (fout) |
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putc(c, fout); |
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} while ((c = getc(finp)) != EOF && !isspace(c)); |
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} |
| 147 |
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return(0); |
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} |
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/* Copy routine for ascii data */ |
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static int |
| 152 |
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ascii_copyf(FILE *fp) |
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{ |
| 154 |
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const int width = scanlen(&res); |
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int x, y; |
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| 157 |
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SET_FILE_TEXT(fp); /* started as binary */ |
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SET_FILE_TEXT(stdout); |
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/* skip rows as requested */ |
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if (readwords(fp, rmin*width*ncomp, NULL) < 0) |
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goto io_err; |
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for (y = 0; y < nrows; y++) { /* copy part */ |
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if (readwords(fp, cmin*ncomp, NULL) < 0) |
| 164 |
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goto io_err; |
| 165 |
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if (readwords(fp, ncols*ncomp, stdout) < 0) |
| 166 |
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goto io_err; |
| 167 |
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fputc('\n', stdout); /* newline per row */ |
| 168 |
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if (readwords(fp, (width-ncols-cmin)*ncomp, NULL) < 0) |
| 169 |
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goto io_err; |
| 170 |
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} |
| 171 |
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if (fflush(stdout) == 0) |
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return(1); |
| 173 |
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io_err: |
| 174 |
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fputs(progname, stderr); |
| 175 |
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fputs(": error copying ascii data\n", stderr); |
| 176 |
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return(0); |
| 177 |
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} |
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| 179 |
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/* Main routine -- load header and call processor */ |
| 180 |
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int |
| 181 |
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main(int argc, char *argv[]) |
| 182 |
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{ |
| 183 |
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FILE *fp = stdin; |
| 184 |
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int asiz = 0; |
| 185 |
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int gotdims; |
| 186 |
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| 187 |
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progname = argv[0]; |
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/* get input and output */ |
| 189 |
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if ((argc < 5) | (argc > 7)) |
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goto usage; |
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if (!isint(argv[1]) | !isint(argv[2]) | |
| 192 |
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!isint(argv[3]) | !isint(argv[4])) |
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goto usage; |
| 194 |
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rmin = atoi(argv[1]); |
| 195 |
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cmin = atoi(argv[2]); |
| 196 |
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nrows = atoi(argv[3]); |
| 197 |
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ncols = atoi(argv[4]); |
| 198 |
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if ((rmin < 0) | (cmin < 0) | (nrows < 0) | (ncols < 0)) |
| 199 |
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goto usage; |
| 200 |
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if (argc <= 5) |
| 201 |
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SET_FILE_BINARY(fp); |
| 202 |
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else if (!(fp = fopen(argv[5], "rb"))) { |
| 203 |
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fputs(argv[5], stderr); |
| 204 |
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fputs(": cannot open for reading\n", stderr); |
| 205 |
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return(1); |
| 206 |
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} |
| 207 |
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if (argc <= 6) |
| 208 |
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SET_FILE_BINARY(stdout); |
| 209 |
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else if (!freopen(argv[6], "wb", stdout)) { |
| 210 |
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fputs(argv[6], stderr); |
| 211 |
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fputs(": cannot open for writing\n", stderr); |
| 212 |
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return(1); |
| 213 |
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} |
| 214 |
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/* process information header */ |
| 215 |
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if (getheader(fp, headline, NULL) < 0) { |
| 216 |
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fputs(progname, stderr); |
| 217 |
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fputs(": bad input header\n", stderr); |
| 218 |
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return(1); |
| 219 |
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} |
| 220 |
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gotdims = (res.rt == PIXSTANDARD) & (res.xr > 0) & (res.yr > 0); |
| 221 |
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if (!gotdims && !fgetsresolu(&res, fp)) { |
| 222 |
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fputs(progname, stderr); |
| 223 |
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fputs(": missing input dimensions\n", stderr); |
| 224 |
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return(1); |
| 225 |
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} |
| 226 |
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if (!nrows) |
| 227 |
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nrows = numscans(&res) - rmin; |
| 228 |
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if (!ncols) |
| 229 |
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ncols = scanlen(&res) - cmin; |
| 230 |
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if ((nrows <= 0) | (ncols <= 0) | |
| 231 |
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(rmin+nrows > numscans(&res)) | |
| 232 |
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(cmin+ncols > scanlen(&res))) { |
| 233 |
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fputs(progname, stderr); |
| 234 |
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fputs(": illegal crop\n", stderr); |
| 235 |
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return(1); |
| 236 |
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} |
| 237 |
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printargs(argc, argv, stdout); |
| 238 |
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if (gotvw) { |
| 239 |
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double p0[2], p1[2]; |
| 240 |
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const char *err; |
| 241 |
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if (res.rt & YMAJOR) { |
| 242 |
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p0[0] = cmin/(double)res.xr; |
| 243 |
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p0[1] = rmin/(double)res.yr; |
| 244 |
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p1[0] = (cmin+ncols)/(double)res.xr; |
| 245 |
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p1[1] = (rmin+nrows)/(double)res.yr; |
| 246 |
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} else { |
| 247 |
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p0[1] = cmin/(double)res.xr; |
| 248 |
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p0[0] = rmin/(double)res.yr; |
| 249 |
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p1[1] = (cmin+ncols)/(double)res.xr; |
| 250 |
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p1[0] = (rmin+nrows)/(double)res.yr; |
| 251 |
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} |
| 252 |
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if (res.rt & XDECR) { |
| 253 |
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p0[0] = 1. - p0[0]; |
| 254 |
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p1[0] = 1. - p1[0]; |
| 255 |
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} |
| 256 |
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if (res.rt & YDECR) { |
| 257 |
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p0[1] = 1. - p0[1]; |
| 258 |
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p1[1] = 1. - p1[1]; |
| 259 |
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} |
| 260 |
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err = cropview(&vw, p0[0], p0[1], p1[0], p1[1]); |
| 261 |
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if (err) { |
| 262 |
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fputs(progname, stderr); |
| 263 |
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fputs(": view error - ", stderr); |
| 264 |
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fputs(err, stderr); |
| 265 |
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fputc('\n', stderr); |
| 266 |
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return(1); |
| 267 |
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} |
| 268 |
|
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fputs(VIEWSTR, stdout); |
| 269 |
|
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fprintview(&vw, stdout); |
| 270 |
|
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fputc('\n', stdout); |
| 271 |
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} |
| 272 |
|
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if (gotdims) |
| 273 |
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printf("NROWS=%d\nNCOLS=%d\n", nrows, ncols); |
| 274 |
|
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if (ncomp) |
| 275 |
|
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printf("NCOMP=%d\n", ncomp); |
| 276 |
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fputformat(fmt, stdout); /* will align bytes if it can */ |
| 277 |
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fputc('\n', stdout); /* end of new header */ |
| 278 |
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if (!gotdims) { /* add resolution string? */ |
| 279 |
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RESOLU newres; |
| 280 |
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if (res.rt & YMAJOR) { |
| 281 |
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newres.xr = ncols; |
| 282 |
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newres.yr = nrows; |
| 283 |
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} else { |
| 284 |
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newres.xr = nrows; |
| 285 |
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newres.yr = ncols; |
| 286 |
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} |
| 287 |
|
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newres.rt = res.rt; |
| 288 |
|
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fputsresolu(&newres, stdout); |
| 289 |
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} |
| 290 |
|
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/* call appropriate processor */ |
| 291 |
|
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if (!strcmp(fmt, "float")) { |
| 292 |
|
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asiz = sizeof(float); |
| 293 |
|
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} else if (!strcmp(fmt, "double")) { |
| 294 |
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asiz = sizeof(double); |
| 295 |
|
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} else if (globmatch(PICFMT, fmt)) { |
| 296 |
|
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asiz = -1; |
| 297 |
|
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if (!ncomp) ncomp = 3; |
| 298 |
|
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} else if (strcasecmp(fmt, "ascii")) { |
| 299 |
|
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fputs(progname, stderr); |
| 300 |
|
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fputs(": unsupported format - ", stderr); |
| 301 |
|
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fputs(fmt, stderr); |
| 302 |
|
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fputc('\n', stderr); |
| 303 |
|
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return(1); |
| 304 |
|
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} |
| 305 |
|
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if (ncomp <= 0) { |
| 306 |
|
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fputs(progname, stderr); |
| 307 |
|
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fputs(": illegal number of components\n", stderr); |
| 308 |
|
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return(1); |
| 309 |
|
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} |
| 310 |
|
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if (!(asiz < 0 ? colr_copyf(fp) : |
| 311 |
|
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!asiz ? ascii_copyf(fp) : binary_copyf(fp, asiz))) |
| 312 |
|
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return(1); |
| 313 |
|
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return(0); |
| 314 |
|
|
usage: |
| 315 |
|
|
fputs("Usage: ", stderr); |
| 316 |
|
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fputs(progname, stderr); |
| 317 |
|
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fputs(" row0 col0 nrows ncols [input [output]]\n", stderr); |
| 318 |
|
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return(1); |
| 319 |
|
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} |
