108 lines
2.3 KiB
C
108 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 <inttypes.h>
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#include <linux/videodev2.h>
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#include "funcs.h"
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#include "../floatimg.h"
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#include "v4l2_pr_structs.h"
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int verbosity;
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/* --------------------------------------------------------------------- */
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int essai(char *dev, int k)
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{
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int vfd, foo;
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struct v4l2_format fmt;
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struct v4l2_requestbuffers reqbuf;
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fprintf(stderr, ">>> %s ( '%s' %d )\n", __func__, dev, k);
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vfd = open_device(dev);
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fprintf(stderr, "\topen %s -> %d\n", dev, vfd);
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memset(&fmt, 0, sizeof(fmt));
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pr_v4l2_format("after 0", &fmt);
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fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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fmt.fmt.pix.width = 640;
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fmt.fmt.pix.height = 480;
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fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_RGB24;
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fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
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pr_v4l2_format("before ioctl", &fmt);
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foo = ioctl(vfd, VIDIOC_S_FMT, &fmt);
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fprintf(stderr, "ioctl -> %d\n", foo);
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if (foo < 0) {
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perror("ioctl S_FMT");
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exit(1);
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}
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pr_v4l2_format("after ioctl", &fmt);
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/* todo V4L2_BUF_TYPE_VIDEO_CAPTURE */
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memset(&reqbuf, 0, sizeof(reqbuf));
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pr_v4l2_requestbuffers("after 0", &reqbuf);
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return k;
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}
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/* --------------------------------------------------------------------- */
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int liste_des_devices(int K)
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{
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fprintf(stderr, "%s not implemented\n", __func__);
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return -1;
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}
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/* --------------------------------------------------------------------- */
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void help(int k)
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{
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puts("Options :");
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puts("\t-d\tselect the video device");
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puts("\t-K\tset the K parameter");
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puts("\t-l\tlist video devices");
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puts("\t-v\tincrease verbosity");
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if (verbosity) { puts(""); fimg_print_version(1); }
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exit(0);
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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;
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char *device = "/dev/video0";
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int K = 0;
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while ((opt = getopt(argc, argv, "d:hK:v")) != -1) {
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switch(opt) {
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case 'd': device = 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 'v': verbosity++; break;
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}
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}
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if (verbosity) fimg_print_version(0);
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foo = essai(device, K);
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fprintf(stderr, "\tessai -> %d\n", foo);
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return 0;
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}
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/* --------------------------------------------------------------------- */
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