diff options
| -rw-r--r-- | yavta.c | 17 |
1 files changed, 14 insertions, 3 deletions
@@ -578,7 +578,7 @@ static int video_get_format(struct device *dev) static int video_set_format(struct device *dev, unsigned int w, unsigned int h, unsigned int format, unsigned int stride, - enum v4l2_field field) + unsigned int buffer_size, enum v4l2_field field) { struct v4l2_format fmt; unsigned int i; @@ -596,14 +596,17 @@ static int video_set_format(struct device *dev, unsigned int w, unsigned int h, fmt.fmt.pix_mp.field = field; fmt.fmt.pix_mp.num_planes = info->n_planes; - for (i = 0; i < fmt.fmt.pix_mp.num_planes; i++) + for (i = 0; i < fmt.fmt.pix_mp.num_planes; i++) { fmt.fmt.pix_mp.plane_fmt[i].bytesperline = stride; + fmt.fmt.pix_mp.plane_fmt[i].sizeimage = buffer_size; + } } else { fmt.fmt.pix.width = w; fmt.fmt.pix.height = h; fmt.fmt.pix.pixelformat = format; fmt.fmt.pix.field = field; fmt.fmt.pix.bytesperline = stride; + fmt.fmt.pix.sizeimage = buffer_size; } ret = ioctl(dev->fd, VIDIOC_S_FMT, &fmt); @@ -1696,6 +1699,7 @@ static void usage(const char *argv0) printf("-t, --time-per-frame num/denom Set the time per frame (eg. 1/25 = 25 fps)\n"); printf("-u, --userptr Use the user pointers streaming method\n"); printf("-w, --set-control 'ctrl value' Set control 'ctrl' to 'value'\n"); + printf(" --buffer-size Buffer size in bytes\n"); printf(" --enum-formats Enumerate formats\n"); printf(" --enum-inputs Enumerate inputs\n"); printf(" --fd Use a numeric file descriptor insted of a device\n"); @@ -1722,8 +1726,10 @@ static void usage(const char *argv0) #define OPT_TSTAMP_SRC 265 #define OPT_FIELD 266 #define OPT_LOG_STATUS 267 +#define OPT_BUFFER_SIZE 268 static struct option opts[] = { + {"buffer-size", 1, 0, OPT_BUFFER_SIZE}, {"buffer-type", 1, 0, 'B'}, {"capture", 2, 0, 'c'}, {"check-overrun", 0, 0, 'C'}, @@ -1789,6 +1795,7 @@ int main(int argc, char *argv[]) unsigned int width = 640; unsigned int height = 480; unsigned int stride = 0; + unsigned int buffer_size = 0; unsigned int nbufs = V4L_BUFFERS_DEFAULT; unsigned int input = 0; unsigned int skip = 0; @@ -1922,6 +1929,9 @@ int main(int argc, char *argv[]) } do_set_control = 1; break; + case OPT_BUFFER_SIZE: + buffer_size = atoi(optarg); + break; case OPT_ENUM_FORMATS: do_enum_formats = 1; break; @@ -2049,7 +2059,8 @@ int main(int argc, char *argv[]) /* Set the video format. */ if (do_set_format) { - if (video_set_format(&dev, width, height, pixelformat, stride, field) < 0) { + if (video_set_format(&dev, width, height, pixelformat, stride, + buffer_size, field) < 0) { video_close(&dev); return 1; } |