mirror of
https://github.com/python/cpython.git
synced 2025-10-30 21:21:22 +00:00
81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
|
/*
|
||
|
|
* i2v -- image-to-video.
|
||
|
|
* Convert an SGI image file to a format that is immediately usable
|
||
|
|
* by lrectwrite.
|
||
|
|
* The header of the file contains a description (in ASCII)
|
||
|
|
* padded to 8196 byte for fast access of the rest of the file.
|
||
|
|
*
|
||
|
|
* Based upon "showimg.c" by Paul Haeberli.
|
||
|
|
* --Guido van Rossum, CWI, Amsterdam
|
||
|
|
*/
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <gl/gl.h>
|
||
|
|
#include <gl/device.h>
|
||
|
|
#include <gl/image.h>
|
||
|
|
|
||
|
|
unsigned short rs[8192];
|
||
|
|
unsigned short gs[8192];
|
||
|
|
unsigned short bs[8192];
|
||
|
|
|
||
|
|
IMAGE *image;
|
||
|
|
int xsize, ysize, zsize;
|
||
|
|
FILE *fp;
|
||
|
|
|
||
|
|
char header[100];
|
||
|
|
char *progname = "i2v";
|
||
|
|
|
||
|
|
main(argc,argv)
|
||
|
|
int argc;
|
||
|
|
char **argv;
|
||
|
|
{
|
||
|
|
int y;
|
||
|
|
if (argc > 0) progname = argv[0];
|
||
|
|
if( argc != 3 ) {
|
||
|
|
fprintf(stderr, "usage: %s infile outfile\n", progname);
|
||
|
|
exit(2);
|
||
|
|
}
|
||
|
|
if( (image=iopen(argv[1],"r")) == NULL ) {
|
||
|
|
fprintf(stderr, "%s: can't open input file %s\n",progname, argv[1]);
|
||
|
|
exit(1);
|
||
|
|
}
|
||
|
|
xsize = image->xsize;
|
||
|
|
ysize = image->ysize;
|
||
|
|
zsize = image->zsize;
|
||
|
|
if ((fp = fopen(argv[2], "w")) == NULL) {
|
||
|
|
fprintf(stderr,"%s: can't open output file %s\n", progname, argv[2]);
|
||
|
|
exit(1);
|
||
|
|
}
|
||
|
|
fprintf(fp, "CMIF video 1.0\n");
|
||
|
|
fprintf(fp, "(%d, %d, %d)\n", xsize, ysize, 0);
|
||
|
|
fprintf(fp, "0, %ld\n", (long)xsize * (long)ysize * sizeof(long));
|
||
|
|
fflush(fp);
|
||
|
|
for(y = 0; y < ysize; y++) {
|
||
|
|
if(zsize<3) {
|
||
|
|
getrow(image, rs, y, 0);
|
||
|
|
writepacked(xsize, rs, rs, rs);
|
||
|
|
} else {
|
||
|
|
getrow(image, rs, y, 0);
|
||
|
|
getrow(image, gs, y, 1);
|
||
|
|
getrow(image, bs, y, 2);
|
||
|
|
writepacked(xsize, rs, gs, bs);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
exit(0);
|
||
|
|
}
|
||
|
|
|
||
|
|
writepacked(n, rsptr, gsptr, bsptr)
|
||
|
|
int n;
|
||
|
|
short *rsptr, *gsptr, *bsptr;
|
||
|
|
{
|
||
|
|
long parray[8192];
|
||
|
|
long *pptr = parray;
|
||
|
|
int i = n;
|
||
|
|
while (--i >= 0) {
|
||
|
|
*pptr++ = *rsptr++ | (*gsptr++<<8) | (*bsptr++<<16);
|
||
|
|
}
|
||
|
|
if (fwrite((char *) parray, sizeof(long), n, fp) != n) {
|
||
|
|
perror("fwrite");
|
||
|
|
exit(1);
|
||
|
|
}
|
||
|
|
}
|