forked from tTh/FloatImg
enumerate image formats
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bba944e055
commit
c74695d07e
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@ -70,6 +70,19 @@ fprintf(FP, " capabilities 0x%X\n", ptr->capabilities);
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pr_capabilities(ptr->capabilities);
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fprintf(FP, " device caps 0x%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_fmtdesc(char *txt, struct v4l2_fmtdesc *ptr)
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{
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fprintf(FP, "-- v4l2_fmtdesc, %-15s %p\n", txt, ptr);
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fprintf(FP, " index %d\n", ptr->index);
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fprintf(FP, " type %d\n", ptr->type); /* enum v4l2_buf_type */
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fprintf(FP, " flags 0x%X\n", ptr->flags);
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fprintf(FP, " description %s\n", ptr->description);
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fprintf(FP, " pixel format 0x%X\n", ptr->pixelformat); /* FOURCC */
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return -1;
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}
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/* --------------------------------------------------------------------- */
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@ -9,6 +9,7 @@ int pr_v4l2_capability(char *txt, struct v4l2_capability *ptr);
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int pr_v4l2_input(char *txt, struct v4l2_input *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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int pr_v4l2_fmtdesc(char *txt, struct v4l2_fmtdesc *ptr);
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char *str_input_type(int t);
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char *str_ctrl_type(int type);
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@ -19,6 +19,37 @@
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int verbosity;
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/* --------------------------------------------------------------------- */
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int enum_image_formats(int fd, char *txt, int k)
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{
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int foo, idx;
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struct v4l2_fmtdesc fmtd;
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printf("-- image formats enumeration (%s)\n", txt);
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idx = 0;
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for (;;) {
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memset(&fmtd, 0, sizeof(fmtd));
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fmtd.index = idx;
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fmtd.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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foo = ioctl(fd, VIDIOC_ENUM_FMT, &fmtd);
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// fprintf(stderr, "B idx=%d, foo=%d, errno=%d\n", idx, foo, errno);
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if (foo) {
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if (EINVAL==errno) {
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break;
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}
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else {
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perror(__func__);
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break;
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}
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}
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pr_v4l2_fmtdesc(__func__, &fmtd);
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idx++;
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}
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return -1;
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}
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/* --------------------------------------------------------------------- */
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static int enum_inputs(int fd, char *txt, int k)
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{
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@ -124,7 +155,7 @@ while (0 == ioctl (fd, VIDIOC_QUERYCTRL, &qctrl)) {
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return -1;
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}
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/* --------------------------------------------------------------------- */
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int show_webcam_infos(char *devname, int k)
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int show_webcam_infos(char *devname, char *title, int k)
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{
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int vfd, foo;
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@ -162,8 +193,9 @@ if (-1 == ioctl(vfd, VIDIOC_ENUMINPUT, &input)) {
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}
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pr_v4l2_input("input 0", &input);
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foo = enum_inputs(vfd, "is that working ?", 0);
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foo = enum_inputs(vfd, "on peut voir quoi ?", 0);
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foo = enum_image_formats(vfd, "Experimental", 0);
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fputs("--\n", stderr);
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foo = enum_controls(vfd, "is that working ?", 0);
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@ -216,7 +248,7 @@ while ((opt = getopt(argc, argv, "d:hK:lv")) != -1) {
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if (verbosity) fimg_print_version(0);
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foo = show_webcam_infos(device, K);
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foo = show_webcam_infos(device, "", K);
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fprintf(stderr, "\n\tshow_webcam_infos -> %d\n", foo);
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return 0;
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