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size of capture is now an option

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tth 2019-09-02 04:31:27 +02:00
parent 7abdf7b43e
commit d65b93fc66
1 changed files with 9 additions and 7 deletions
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16
v4l2/grabvidseq.c
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@ -36,9 +36,6 @@
#define SAVE_AS_PNM 0
#define SAVE_AS_FIMG 0
#define WIDTH 1920
#define HEIGHT 1080
/* --------------------------------------------------------------------- */
#define CLEAR(x) memset(&(x), 0, sizeof(x))
@ -78,6 +75,7 @@ puts("\t-n NNN\t\thow many frames ?");
puts("\t-O ./\t\tset Output dir");
puts("\t-o bla\t\tset output filename");
puts("\t-p NNN\t\tperiod in seconds");
puts("\t-s WxH\t\tsize of capture");
puts("\t-v\t\tincrease verbosity");
exit(0);
}
@ -102,6 +100,8 @@ int foo, bar;
double period = 10.0; /* delai entre les captures */
int nbre_capt = 1; /* nombre de captures */
int opt;
int width = 640;
int height = 480;
double t_final;
char *dest_dir = "."; /* no trailing slash */
char *outfile = "out.pnm";
@ -110,7 +110,7 @@ char *outfile = "out.pnm";
FloatImg grab, cumul;
#endif
while ((opt = getopt(argc, argv, "d:hn:o:O:p:v")) != -1) {
while ((opt = getopt(argc, argv, "d:hn:o:O:p:s:v")) != -1) {
switch(opt) {
case 'd': dev_name = optarg; break;
case 'h': help(0); break;
@ -118,6 +118,7 @@ while ((opt = getopt(argc, argv, "d:hn:o:O:p:v")) != -1) {
case 'O': dest_dir = optarg; break;
case 'o': outfile = optarg; break;
case 'p': period = 1e6*atof(optarg); break;
case 's': parse_WxH(optarg, &width, &height); break;
case 'v': verbosity++; break;
}
}
@ -125,6 +126,7 @@ while ((opt = getopt(argc, argv, "d:hn:o:O:p:v")) != -1) {
if (verbosity) {
fprintf(stderr, "running %s pid=%d\n", argv[0], getpid());
fprintf(stderr, "period is %.3f microseconds\n", period);
fprintf(stderr, "framesize is %dx%d\n", width, height);
}
fd = v4l2_open(dev_name, O_RDWR | O_NONBLOCK, 0);
@ -135,8 +137,8 @@ if (fd < 0) {
CLEAR(fmt);
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
fmt.fmt.pix.width = WIDTH;
fmt.fmt.pix.height = HEIGHT;
fmt.fmt.pix.width = width;
fmt.fmt.pix.height = height;
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_RGB24;
fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
xioctl(fd, VIDIOC_S_FMT, &fmt);
@ -144,7 +146,7 @@ if (fmt.fmt.pix.pixelformat != V4L2_PIX_FMT_RGB24) {
printf("Libv4l didn't accept RGB24 format. Can't proceed.\n");
exit(EXIT_FAILURE);
}
if ((fmt.fmt.pix.width != WIDTH) || (fmt.fmt.pix.height != HEIGHT)) {
if ((fmt.fmt.pix.width != width) || (fmt.fmt.pix.height != height)) {
printf("Warning: driver is sending image at %dx%d\n",
fmt.fmt.pix.width, fmt.fmt.pix.height);
}