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| 1 | +/* |
| 2 | + * i2v -- image-to-video. |
| 3 | + * Convert an SGI image file to a format that is immediately usable |
| 4 | + * by lrectwrite. |
| 5 | + * The header of the file contains a description (in ASCII) |
| 6 | + * padded to 8196 byte for fast access of the rest of the file. |
| 7 | + * |
| 8 | + * Based upon "showimg.c" by Paul Haeberli. |
| 9 | + * --Guido van Rossum, CWI, Amsterdam |
| 10 | + */ |
| 11 | +#include <stdio.h> |
| 12 | +#include <gl/gl.h> |
| 13 | +#include <gl/device.h> |
| 14 | +#include <gl/image.h> |
| 15 | + |
| 16 | +unsigned short rs[8192]; |
| 17 | +unsigned short gs[8192]; |
| 18 | +unsigned short bs[8192]; |
| 19 | + |
| 20 | +IMAGE *image; |
| 21 | +int xsize, ysize, zsize; |
| 22 | +FILE *fp; |
| 23 | + |
| 24 | +char header[100]; |
| 25 | +char *progname = "i2v"; |
| 26 | + |
| 27 | +main(argc,argv) |
| 28 | +int argc; |
| 29 | +char **argv; |
| 30 | +{ |
| 31 | + int y; |
| 32 | + if (argc > 0) progname = argv[0]; |
| 33 | + if( argc != 3 ) { |
| 34 | + fprintf(stderr, "usage: %s infile outfile\n", progname); |
| 35 | + exit(2); |
| 36 | + } |
| 37 | + if( (image=iopen(argv[1],"r")) == NULL ) { |
| 38 | + fprintf(stderr, "%s: can't open input file %s\n",progname, argv[1]); |
| 39 | + exit(1); |
| 40 | + } |
| 41 | + xsize = image->xsize; |
| 42 | + ysize = image->ysize; |
| 43 | + zsize = image->zsize; |
| 44 | + if ((fp = fopen(argv[2], "w")) == NULL) { |
| 45 | + fprintf(stderr,"%s: can't open output file %s\n", progname, argv[2]); |
| 46 | + exit(1); |
| 47 | + } |
| 48 | + fprintf(fp, "CMIF video 1.0\n"); |
| 49 | + fprintf(fp, "(%d, %d, %d)\n", xsize, ysize, 0); |
| 50 | + fprintf(fp, "0, %ld\n", (long)xsize * (long)ysize * sizeof(long)); |
| 51 | + fflush(fp); |
| 52 | + for(y = 0; y < ysize; y++) { |
| 53 | + if(zsize<3) { |
| 54 | + getrow(image, rs, y, 0); |
| 55 | + writepacked(xsize, rs, rs, rs); |
| 56 | + } else { |
| 57 | + getrow(image, rs, y, 0); |
| 58 | + getrow(image, gs, y, 1); |
| 59 | + getrow(image, bs, y, 2); |
| 60 | + writepacked(xsize, rs, gs, bs); |
| 61 | + } |
| 62 | + } |
| 63 | + exit(0); |
| 64 | +} |
| 65 | + |
| 66 | +writepacked(n, rsptr, gsptr, bsptr) |
| 67 | + int n; |
| 68 | + short *rsptr, *gsptr, *bsptr; |
| 69 | +{ |
| 70 | + long parray[8192]; |
| 71 | + long *pptr = parray; |
| 72 | + int i = n; |
| 73 | + while (--i >= 0) { |
| 74 | + *pptr++ = *rsptr++ | (*gsptr++<<8) | (*bsptr++<<16); |
| 75 | + } |
| 76 | + if (fwrite((char *) parray, sizeof(long), n, fp) != n) { |
| 77 | + perror("fwrite"); |
| 78 | + exit(1); |
| 79 | + } |
| 80 | +} |
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