| 1 |
/* Copyright (c) 1991 Regents of the University of California */ |
| 2 |
|
| 3 |
#ifndef lint |
| 4 |
static char SCCSid[] = "$SunId$ LBL"; |
| 5 |
#endif |
| 6 |
|
| 7 |
/* |
| 8 |
* prot.c - program to rotate picture file 90 degrees clockwise. |
| 9 |
* |
| 10 |
* 2/26/88 |
| 11 |
*/ |
| 12 |
|
| 13 |
#include "standard.h" |
| 14 |
|
| 15 |
#include "color.h" |
| 16 |
|
| 17 |
#include "resolu.h" |
| 18 |
|
| 19 |
int order; /* input scanline order */ |
| 20 |
int xres, yres; /* input resolution */ |
| 21 |
|
| 22 |
int correctorder = 0; /* order correction? */ |
| 23 |
|
| 24 |
#ifdef BIGMEM |
| 25 |
char buf[1<<22]; /* output buffer */ |
| 26 |
#else |
| 27 |
char buf[1<<20]; /* output buffer */ |
| 28 |
#endif |
| 29 |
|
| 30 |
int nrows; /* number of rows output at once */ |
| 31 |
|
| 32 |
#define scanbar ((COLR *)buf) |
| 33 |
|
| 34 |
char *progname; |
| 35 |
|
| 36 |
#define neworder() (correctorder ? order : \ |
| 37 |
(order^(order&YMAJOR?YDECR:XDECR)^YMAJOR)) |
| 38 |
|
| 39 |
|
| 40 |
main(argc, argv) |
| 41 |
int argc; |
| 42 |
char *argv[]; |
| 43 |
{ |
| 44 |
static char picfmt[LPICFMT+1] = PICFMT; |
| 45 |
int rval; |
| 46 |
FILE *fin; |
| 47 |
|
| 48 |
progname = argv[0]; |
| 49 |
|
| 50 |
if (argc > 2 && !strcmp(argv[1], "-c")) { |
| 51 |
correctorder++; |
| 52 |
argc--; argv++; |
| 53 |
} |
| 54 |
if (argc != 2 && argc != 3) { |
| 55 |
fprintf(stderr, "Usage: %s [-c] infile [outfile]\n", progname); |
| 56 |
exit(1); |
| 57 |
} |
| 58 |
if ((fin = fopen(argv[1], "r")) == NULL) { |
| 59 |
fprintf(stderr, "%s: cannot open\n", argv[1]); |
| 60 |
exit(1); |
| 61 |
} |
| 62 |
if (argc == 3 && freopen(argv[2], "w", stdout) == NULL) { |
| 63 |
fprintf(stderr, "%s: cannot open\n", argv[2]); |
| 64 |
exit(1); |
| 65 |
} |
| 66 |
/* transfer header */ |
| 67 |
if ((rval = checkheader(fin, picfmt, stdout)) < 0) { |
| 68 |
fprintf(stderr, "%s: not a Radiance picture\n", progname); |
| 69 |
exit(1); |
| 70 |
} |
| 71 |
if (rval) |
| 72 |
fputformat(picfmt, stdout); |
| 73 |
/* add new header info. */ |
| 74 |
printf("%s%s\n\n", progname, correctorder?" -c":""); |
| 75 |
/* get picture size */ |
| 76 |
if ((order = fgetresolu(&xres, &yres, fin)) < 0) { |
| 77 |
fprintf(stderr, "%s: bad picture size\n", progname); |
| 78 |
exit(1); |
| 79 |
} |
| 80 |
/* write new picture size */ |
| 81 |
fputresolu(neworder(), yres, xres, stdout); |
| 82 |
/* compute buffer capacity */ |
| 83 |
nrows = sizeof(buf)/sizeof(COLR)/yres; |
| 84 |
rotate(fin); /* rotate the image */ |
| 85 |
exit(0); |
| 86 |
} |
| 87 |
|
| 88 |
|
| 89 |
rotate(fp) /* rotate picture */ |
| 90 |
FILE *fp; |
| 91 |
{ |
| 92 |
register COLR *inln; |
| 93 |
register int xoff, inx, iny; |
| 94 |
long start, ftell(); |
| 95 |
|
| 96 |
if ((inln = (COLR *)malloc(xres*sizeof(COLR))) == NULL) { |
| 97 |
fprintf(stderr, "%s: out of memory\n", progname); |
| 98 |
exit(1); |
| 99 |
} |
| 100 |
start = ftell(fp); |
| 101 |
for (xoff = 0; xoff < xres; xoff += nrows) { |
| 102 |
if (fseek(fp, start, 0) < 0) { |
| 103 |
fprintf(stderr, "%s: seek error\n", progname); |
| 104 |
exit(1); |
| 105 |
} |
| 106 |
for (iny = yres-1; iny >= 0; iny--) { |
| 107 |
if (freadcolrs(inln, xres, fp) < 0) { |
| 108 |
fprintf(stderr, "%s: read error\n", progname); |
| 109 |
exit(1); |
| 110 |
} |
| 111 |
for (inx = 0; inx < nrows && xoff+inx < xres; inx++) |
| 112 |
bcopy((char *)inln[xoff+inx], |
| 113 |
(char *)scanbar[inx*yres+iny], |
| 114 |
sizeof(COLR)); |
| 115 |
} |
| 116 |
for (inx = 0; inx < nrows && xoff+inx < xres; inx++) |
| 117 |
if (fwritecolrs(scanbar+inx*yres, yres, stdout) < 0) { |
| 118 |
fprintf(stderr, "%s: write error\n", progname); |
| 119 |
exit(1); |
| 120 |
} |
| 121 |
} |
| 122 |
free((char *)inln); |
| 123 |
} |
