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video-infos : more informations displayed

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tth 2019-07-22 04:10:00 +02:00
parent 991308f5b2
commit 4e687db723
3 changed files with 97 additions and 12 deletions
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84
v4l2/v4l2_pr_structs.c
View File

@ -3,7 +3,7 @@
*/
#include <stdio.h>
#include <inttypes.h>
#include <linux/videodev2.h>
#include "v4l2_pr_structs.h"
@ -27,17 +27,87 @@ switch(type) {
return "???";
}
/* --------------------------------------------------------------------- */
static void pr_capabilities(uint32_t caps)
{
fputs(" ", FP);
if (caps & V4L2_CAP_VIDEO_CAPTURE) fputs("vcapt ", FP);
if (caps & V4L2_CAP_VIDEO_OUTPUT) fputs("vout ", FP);
if (caps & V4L2_CAP_VIDEO_OVERLAY) fputs("overlay ", FP);
if (caps & V4L2_CAP_VBI_CAPTURE) fputs("vbicapt ", FP);
if (caps & V4L2_CAP_VBI_OUTPUT) fputs("vbiout ", FP);
/* to be continued */
if (caps & V4L2_CAP_AUDIO) fputs("audio ", FP);
if (caps & V4L2_CAP_SDR_CAPTURE) fputs("sdrcapt ", FP);
if (caps & V4L2_CAP_EXT_PIX_FORMAT) fputs("extpix ", FP);
if (caps & V4L2_CAP_SDR_OUTPUT) fputs("sdrout ", FP);
if (caps & V4L2_CAP_READWRITE) fputs("rwsysc ", FP);
if (caps & V4L2_CAP_ASYNCIO) fputs("asyncio ", FP);
if (caps & V4L2_CAP_STREAMING) fputs("stream ", FP);
fputs("\n", FP);
}
/* --------------------------------------------------------------------- */
int pr_v4l2_capability(char *txt, struct v4l2_capability *ptr)
{
fprintf(FP, "-- v4l2_capability, %-15s %p\n", txt, ptr);
fprintf(FP, " driver %s\n", ptr->driver);
fprintf(FP, " card %s\n", ptr->card);
fprintf(FP, " bus info %s\n", ptr->bus_info);
fprintf(FP, " driver %s\n", ptr->driver);
fprintf(FP, " card %s\n", ptr->card);
fprintf(FP, " bus info %s\n", ptr->bus_info);
fprintf(FP, " version %X\n", ptr->version);
fprintf(FP, " capabilities %X\n", ptr->capabilities);
fprintf(FP, " device caps %X\n", ptr->device_caps);
fprintf(FP, " version 0x%X\n", ptr->version);
fprintf(FP, " capabilities 0x%X\n", ptr->capabilities);
pr_capabilities(ptr->capabilities);
fprintf(FP, " device caps 0x%X\n", ptr->device_caps);
return -1;
}
/* --------------------------------------------------------------------- */
static char *str_input_type(int t)
{
switch (t) {
case V4L2_INPUT_TYPE_TUNER: return "tuner";
case V4L2_INPUT_TYPE_CAMERA: return "camera";
case V4L2_INPUT_TYPE_TOUCH: return "touch";
}
return "???";
}
/* --------------------------------------------------------------------- */
static void pr_input_status(uint32_t st)
{
if (st & V4L2_IN_ST_NO_POWER) fputs("nopower", FP);
if (st & V4L2_IN_ST_NO_SIGNAL) fputs("nosignal", FP);
if (st & V4L2_IN_ST_NO_COLOR) fputs("nocolor", FP);
/* to be continued */
}
/* --------------------------------------------------------------------- */
int pr_v4l2_input(char *txt, struct v4l2_input *ptr)
{
fprintf(FP, "-- v4l2_input, %-15s %p\n", txt, ptr);
fprintf(FP, " index %d\n", ptr->index);
fprintf(FP, " name %s\n", ptr->name);
fprintf(FP, " type %d %s\n", ptr->type,
str_input_type(ptr->type));
fprintf(FP, " audioset 0x%X\n", ptr->audioset);
fprintf(FP, " tuner 0x%X\n", ptr->tuner);
/* XXX v4l2_std_id std; */
fprintf(FP, " status %d\n", ptr->status);
pr_input_status(ptr->status);
fprintf(FP, " capabilities 0x%X\n", ptr->capabilities);
return -1;
}

2
v4l2/v4l2_pr_structs.h
View File

@ -6,7 +6,7 @@
/* --------------------------------------------------------------------- */
int pr_v4l2_capability(char *txt, struct v4l2_capability *ptr);
int pr_v4l2_input(char *txt, struct v4l2_input *ptr);
int pr_v4l2_format(char *txt, struct v4l2_format *ptr);
int pr_v4l2_requestbuffers(char *txt, struct v4l2_requestbuffers *ptr);
/* --------------------------------------------------------------------- */

23
v4l2/video-infos.c
View File

@ -18,13 +18,22 @@
int verbosity;
/* --------------------------------------------------------------------- */
static int enum_input(char *txt, int k)
{
return -1;
}
/* --------------------------------------------------------------------- */
int show_webcam_infos(char *devname, int k)
{
int vfd, foo;
struct v4l2_capability cap;
struct v4l2_format fmt;
// struct v4l2_format fmt;
struct v4l2_input input;
// int index;
// struct v4l2_requestbuffers reqbuf;
@ -40,15 +49,21 @@ if (vfd < 0) {
fprintf(stderr, "\topen %s -> %d\n", devname, vfd);
memset(&cap, 0, sizeof(cap));
foo = ioctl(vfd, VIDIOC_QUERYCAP, &cap);
if (foo < 0) {
perror("ioctl QUERYCAP");
return -4;
}
pr_v4l2_capability(devname, &cap);
if ( ! (cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) {
fprintf("%s : no video capture\n", devname);
memset(&input, 0, sizeof(input));
if (-1 == ioctl(vfd, VIDIOC_ENUMINPUT, &input)) {
perror("VIDIOC_ENUMINPUT");
exit(EXIT_FAILURE);
}
pr_v4l2_input("input 0", &input);
close(vfd);
@ -95,7 +110,7 @@ while ((opt = getopt(argc, argv, "d:hK:lv")) != -1) {
if (verbosity) fimg_print_version(0);
foo = show_webcam_infos(device, K);
fprintf(stderr, "\tshow_webcam_infos -> %d\n", foo);
fprintf(stderr, "\n\tshow_webcam_infos -> %d\n", foo);
return 0;
}