forked from tTh/FloatImg
adding a new tool : video-infos
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.gitignore
vendored
1
.gitignore
vendored
@ -17,6 +17,7 @@ v4l2/capture
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v4l2/grabvidseq
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v4l2/*.o
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v4l2/*.ppm
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v4l2/video-infos
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tools/fimg2png
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tools/fimg2pnm
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@ -14,13 +14,18 @@ funcs.o: funcs.c funcs.h Makefile
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v4l2_pr_structs.o: v4l2_pr_structs.c v4l2_pr_structs.h Makefile
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gcc ${COPT} -c $<
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grabvidseq: grabvidseq.c Makefile
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gcc -Wall -g $< ../libfloatimg.a -lv4l2 -o $@
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video-infos: video-infos.c Makefile funcs.o v4l2_pr_structs.o
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gcc -Wall -g $< ../libfloatimg.a funcs.o v4l2_pr_structs.o -o $@
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# ---------------
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# external things
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capture: capture.c Makefile
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gcc -Wall -g $< -o $@
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grabvidseq: grabvidseq.c Makefile
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gcc -Wall -g $< ../libfloatimg.a -lv4l2 -o $@
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@ -27,11 +27,26 @@ switch(type) {
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return "???";
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}
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/* --------------------------------------------------------------------- */
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int pr_v4l2_capability(char *txt, struct v4l2_capability *ptr)
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{
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fprintf(FP, "-- v4l2_capability, %-15s %p\n", txt, ptr);
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fprintf(FP, " driver %s\n", ptr->driver);
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fprintf(FP, " card %s\n", ptr->card);
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fprintf(FP, " bus info %s\n", ptr->bus_info);
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fprintf(FP, " version %X\n", ptr->version);
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fprintf(FP, " capabilities %X\n", ptr->capabilities);
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fprintf(FP, " device caps %X\n", ptr->device_caps);
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return -1;
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}
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/* --------------------------------------------------------------------- */
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int pr_v4l2_format(char *txt, struct v4l2_format *ptr)
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{
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fprintf(FP, "-- v4l2_format, %-15s %p\n", txt, ptr);
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fprintf(FP, " type %d %s\n", ptr->type,/* enum v4l2_buf_type */
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fmttype2str(ptr->type));
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fmttype2str(ptr->type));
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switch(ptr->type) {
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@ -39,10 +54,10 @@ switch(ptr->type) {
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fprintf(FP, " dims %dx%d\n",
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ptr->fmt.pix.width,
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ptr->fmt.pix.height);
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break;
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default: fputs(" ???\n", FP); break;
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default: fprintf(FP, "type is %d\n", ptr->type);
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break;
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}
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@ -1,8 +1,12 @@
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/*
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* fonctions pour afficher les structures de V4L2
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*
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* WARNING : this is a work in progress !
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*/
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/* --------------------------------------------------------------------- */
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int pr_v4l2_capability(char *txt, struct v4l2_capability *ptr);
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int pr_v4l2_format(char *txt, struct v4l2_format *ptr);
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int pr_v4l2_requestbuffers(char *txt, struct v4l2_requestbuffers *ptr);
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/* --------------------------------------------------------------------- */
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104
v4l2/video-infos.c
Normal file
104
v4l2/video-infos.c
Normal file
@ -0,0 +1,104 @@
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/*
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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 <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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int show_webcam_infos(char *devname, int k)
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{
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int vfd, foo;
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struct v4l2_capability cap;
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struct v4l2_format fmt;
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// struct v4l2_requestbuffers reqbuf;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( '%s' %d )\n", __func__, devname, k);
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#endif
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vfd = open_device(devname);
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if (vfd < 0) {
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perror(devname);
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return -3;
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}
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fprintf(stderr, "\topen %s -> %d\n", devname, vfd);
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foo = ioctl(vfd, VIDIOC_QUERYCAP, &cap);
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if (foo < 0) {
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perror("ioctl QUERYCAP");
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return -4;
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}
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pr_v4l2_capability(devname, &cap);
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if ( ! (cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) {
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fprintf("%s : no video capture\n", devname);
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}
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close(vfd);
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return 0;
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}
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/* --------------------------------------------------------------------- */
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int liste_des_devices(int flag)
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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:lv")) != -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 'l': liste_des_devices(0); 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 = show_webcam_infos(device, K);
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fprintf(stderr, "\tshow_webcam_infos -> %d\n", foo);
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return 0;
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}
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/* --------------------------------------------------------------------- */
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