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/* Convert the first image of a CMIF video movie file to SGI .rgb format.
usage: v2i videofile imagefile [planemask]
link with -limage
*/
#include <stdio.h>
#include <gl/image.h>
long bm[1280];
short rb[1280], gb[1280], bb[1280];
long w, h, pf;
#define R(comp) ((comp) & 0xff)
#define G(comp) (((comp)>>8) & 0xff)
#define B(comp) (((comp)>>16) & 0xff)
main(argc, argv)
char **argv;
{
char lbuf[100];
int x, y;
int i;
IMAGE * of;
int pmask;
if( argc != 3 && argc != 4) {
fprintf(stderr, "Usage: v2i videofile imgfile [planemask]\n");
exit(2);
}
if ( argc == 4)
pmask = atoi(argv[3]);
else
pmask = 7;
if ( freopen(argv[1], "r", stdin) == NULL ) {
perror(argv[1]);
exit(1);
}
if (fgets(lbuf, sizeof lbuf, stdin) == NULL) {
fprintf(stderr, "Immediate EOF\n");
exit(1);
}
if (strncmp(lbuf, "CMIF", 4) == 0) {
/* Skip optional header line */
if (fgets(lbuf, sizeof lbuf, stdin) == NULL) {
fprintf(stderr, "Immediate EOF after header\n");
exit(1);
}
}
pf = 2; /* Default */
if ( sscanf(lbuf, "(%d,%d,%d)", &w, &h, &pf) < 2) {
fprintf(stderr, "%s: bad size spec: %s\n", argv[0], lbuf);
exit(1);
}
fgets(lbuf, sizeof lbuf, stdin); /* Skip time info */
if ( w > 1280 ) {
fprintf(stderr, "%s: Sorry, too wide\n", argv[0]);
exit(1);
}
if ( (of=iopen(argv[2], "w", RLE(1), 3, w, h, 3)) == 0) {
perror(argv[2]);
exit(1);
}
for( y=0; y<h; y++) {
if( fread(bm, sizeof(long), w, stdin) != w) {
fprintf(stderr, "%s: short read\n", argv[0]);
exit(1);
}
for( x=0; x<w; x++) {
if ( pmask & 1) rb[x] = R(bm[x]);
if ( pmask & 2) gb[x] = G(bm[x]);
if ( pmask & 4) bb[x] = B(bm[x]);
}
putrow(of, rb, y, 0);
putrow(of, gb, y, 1);
putrow(of, bb, y, 2);
}
iclose(of);
exit(0);
}
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