Hi Sakari,
On Thursday 10 September 2015 15:19:20 Sakari Ailus wrote:
> Passing format "help" to the -f option will list the supported formats and
> exit.
>
> Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Applied, thank you.
> ---
> yavta.c | 19 +++++++++++++++++++
> 1 file changed, 19 insertions(+)
>
> diff --git a/yavta.c b/yavta.c
> index 7d8ac8e..b627725 100644
> --- a/yavta.c
> +++ b/yavta.c
> @@ -215,6 +215,20 @@ static struct v4l2_format_info {
> { "MPEG", V4L2_PIX_FMT_MPEG, 1 },
> };
>
> +static void list_formats(void)
> +{
> + unsigned int i;
> +
> + for (i = 0; i < ARRAY_SIZE(pixel_formats); i++)
> + printf("%s (\"%c%c%c%c\", %u planes)\n",
> + pixel_formats[i].name,
> + pixel_formats[i].fourcc & 0xff,
> + (pixel_formats[i].fourcc >> 8) & 0xff,
> + (pixel_formats[i].fourcc >> 16) & 0xff,
> + (pixel_formats[i].fourcc >> 24) & 0xff,
> + pixel_formats[i].n_planes);
> +}
> +
> static const struct v4l2_format_info *v4l2_format_by_fourcc(unsigned int
> fourcc) {
> unsigned int i;
> @@ -1734,6 +1748,7 @@ static void usage(const char *argv0)
> printf("-C, --check-overrun Verify dequeued frames for buffer
> overrun\n"); printf("-d, --delay Delay (in ms) before requeuing
> buffers\n"); printf("-f, --format format Set the video format\n");
> + printf(" use -f help to list the supported formats\n");
> printf("-F, --file[=name] Read/write frames from/to disk\n");
> printf("\tFor video capture devices, the first '#' character in the file
> name is\n"); printf("\texpanded to the frame sequence number. The default
> file name is\n"); @@ -1899,6 +1914,10 @@ int main(int argc, char *argv[])
> delay = atoi(optarg);
> break;
> case 'f':
> + if (!strcmp("help", optarg)) {
> + list_formats();
> + return 0;
> + }
> do_set_format = 1;
> info = v4l2_format_by_name(optarg);
> if (info == NULL) {
--
Regards,
Laurent Pinchart
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