105 lines
2.3 KiB
C
105 lines
2.3 KiB
C
/*
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* tests pour capturer les webcams
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <math.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <errno.h>
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#include <inttypes.h>
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#include <linux/videodev2.h>
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#include "../floatimg.h"
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#include "v4l2_pr_structs.h"
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#include "funcs.h"
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int verbosity;
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/* --------------------------------------------------------------------- */
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void help(int n)
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{
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puts("camera controls");
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puts("\t-d bla\t\tselect video device");
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puts("\t-e nnn\t\tset 'etype'");
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puts("\t-K nnn\t\tinteger parameter");
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puts("\t-n bla\t\tset title");
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exit(0);
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}
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/* --------------------------------------------------------------------- */
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int init_screen(char *title)
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{
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fprintf(stderr, ">>> %s ( '%s' )\n", __func__, title);
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return -1;
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}
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/* --------------------------------------------------------------------- */
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int preparation(char *devname, int param)
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{
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int fd, foo;
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struct v4l2_capability cap;
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fd = open_device(devname);
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if (fd < 0) {
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fprintf(stderr, "err %d on %s opening\n", errno, devname);
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return -2;
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}
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/* est-ce un device qui permet la capture video */
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foo = ioctl(fd, VIDIOC_QUERYCAP, &cap);
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if (-1 == foo) {
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perror("VIDIOC_QUERYCAP");
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return -2;
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}
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if (!(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) {
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fprintf(stderr, "%s is not a video capture device\n", devname);
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return -3;
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}
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return fd;
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}
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/* --------------------------------------------------------------------- */
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int interactive(int fd, int notused)
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{
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init_screen("prototype");
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fprintf(stderr, "file descriptor = %d\n", fd);
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}
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/* --------------------------------------------------------------------- */
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int main(int argc, char *argv[])
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{
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int foo, opt, devnum;
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int etype = 0;
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char *device = "/dev/video0";
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char *title = NULL;
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int K = 0;
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while ((opt = getopt(argc, argv, "d:e:hK:lT:v")) != -1) {
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switch(opt) {
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case 'd': device = optarg; break;
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case 'e': etype = atol(optarg); break;
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case 'h': help(0); break;
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case 'K': K = atol(optarg); break;
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// case 'l': liste_des_devices(0); break;
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case 't': title = optarg;
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case 'v': verbosity++; break;
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}
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}
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devnum = preparation(device, K);
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if (devnum < 0) {
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fprintf(stderr, "%s : erreur init video device\n", argv[0]);
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exit(1);
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}
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foo = interactive(devnum, 0);
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return 0;
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}
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/* --------------------------------------------------------------------- */
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