98 lines
2.1 KiB
C
98 lines
2.1 KiB
C
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/*
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* svgrab24 - Grab the current video input image into an rgb file.
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*
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* Jack Jansen, CWI, May 93.
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*
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* Adapted from grabone.c
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*/
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#ident "$Revision$"
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#include <stdio.h>
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#include <stdlib.h>
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#include <svideo.h>
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#include <gl/gl.h>
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#include <gl/device.h>
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#include <getopt.h>
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#include <image.h>
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main(int argc, char *argv[])
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{
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SVhandle V;
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svCaptureInfo ci;
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boolean debug;
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int ch, errflg;
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int bufferSize;
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long *buffer;
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IMAGE *imgfile;
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short *r, *g, *b;
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int x, y;
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char *ProgName = argv[0];
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debug = FALSE;
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ci.format = SV_RGB32_FRAMES;
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ci.width = 0;
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ci.height = 0;
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ci.size = 1;
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argv++; argc--;
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if ( argc > 2 && strcmp(argv[0], "-w") == 0) {
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ci.width = atoi(argv[1]);
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argc -= 2;
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argv += 2;
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}
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if ( argc != 1 ) {
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fprintf(stderr, "Usage: %s [-w width] rgbfilename\n", ProgName);
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exit(1);
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}
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/* Open video device */
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if ((V = svOpenVideo()) == NULL) {
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svPerror("open");
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exit(1);
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}
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if (svQueryCaptureBufferSize(V, &ci, &bufferSize) < 0) {
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svPerror("svQueryCaptureBufferSize");
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exit(1);
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}
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buffer = malloc(bufferSize);
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if (svCaptureOneFrame(V, ci.format, &ci.width, &ci.height, buffer) < 0) {
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svPerror("svCaptureOneFrame");
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exit(1);
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}
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if (debug) {
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printf("captured size: %d by %d\n", ci.width, ci.height);
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}
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if ( (imgfile=iopen(argv[0], "w", RLE(1), 3, ci.width, ci.height, 3)) == 0) {
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perror(argv[1]);
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exit(1);
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}
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r = (short *)malloc(ci.width*sizeof(short));
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g = (short *)malloc(ci.width*sizeof(short));
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b = (short *)malloc(ci.width*sizeof(short));
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if ( !r || !g || !b ) {
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fprintf(stderr, "%s: malloc failed\n", ProgName);
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exit(1);
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}
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for(y=0; y<ci.height; y++) {
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for(x=0; x<ci.width; x++) {
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unsigned long data = *buffer++;
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r[x] = data & 0xff;
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g[x] = (data>>8) & 0xff;
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b[x] = (data>>16) & 0xff;
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}
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if ( putrow(imgfile, r, y, 0) == 0 ||
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putrow(imgfile, g, y, 1) == 0 ||
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putrow(imgfile, b, y, 2) == 0) {
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fprintf(stderr, "%s: putrow failed\n", ProgName);
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exit(1);
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}
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}
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iclose(imgfile);
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exit(0);
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}
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