1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/*
* svgrab24 - Grab the current video input image into an rgb file.
*
* Jack Jansen, CWI, May 93.
*
* Adapted from grabone.c
*/
#ident "$Revision$"
#include <stdio.h>
#include <stdlib.h>
#include <svideo.h>
#include <gl/gl.h>
#include <gl/device.h>
#include <getopt.h>
#include <image.h>
main(int argc, char *argv[])
{
SVhandle V;
svCaptureInfo ci;
boolean debug;
int ch, errflg;
int bufferSize;
long *buffer;
IMAGE *imgfile;
short *r, *g, *b;
int x, y;
char *ProgName = argv[0];
debug = FALSE;
ci.format = SV_RGB32_FRAMES;
ci.width = 0;
ci.height = 0;
ci.size = 1;
argv++; argc--;
if ( argc > 2 && strcmp(argv[0], "-w") == 0) {
ci.width = atoi(argv[1]);
argc -= 2;
argv += 2;
}
if ( argc != 1 ) {
fprintf(stderr, "Usage: %s [-w width] rgbfilename\n", ProgName);
exit(1);
}
/* Open video device */
if ((V = svOpenVideo()) == NULL) {
svPerror("open");
exit(1);
}
if (svQueryCaptureBufferSize(V, &ci, &bufferSize) < 0) {
svPerror("svQueryCaptureBufferSize");
exit(1);
}
buffer = malloc(bufferSize);
if (svCaptureOneFrame(V, ci.format, &ci.width, &ci.height, buffer) < 0) {
svPerror("svCaptureOneFrame");
exit(1);
}
if (debug) {
printf("captured size: %d by %d\n", ci.width, ci.height);
}
if ( (imgfile=iopen(argv[0], "w", RLE(1), 3, ci.width, ci.height, 3)) == 0) {
perror(argv[1]);
exit(1);
}
r = (short *)malloc(ci.width*sizeof(short));
g = (short *)malloc(ci.width*sizeof(short));
b = (short *)malloc(ci.width*sizeof(short));
if ( !r || !g || !b ) {
fprintf(stderr, "%s: malloc failed\n", ProgName);
exit(1);
}
for(y=0; y<ci.height; y++) {
for(x=0; x<ci.width; x++) {
unsigned long data = *buffer++;
r[x] = data & 0xff;
g[x] = (data>>8) & 0xff;
b[x] = (data>>16) & 0xff;
}
if ( putrow(imgfile, r, y, 0) == 0 ||
putrow(imgfile, g, y, 1) == 0 ||
putrow(imgfile, b, y, 2) == 0) {
fprintf(stderr, "%s: putrow failed\n", ProgName);
exit(1);
}
}
iclose(imgfile);
exit(0);
}
|
