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