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clients/simple-dmabuf-v4l: Convert to use getopt_long

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Makes adding further flags/options/args much easier.

Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Suggested-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This commit is contained in:
Marius Vlad
2019-11-20 23:10:22 +02:00
committed by Pekka Paalanen
parent baa1ef22e8
commit 3345452c1b
1 changed files with 38 additions and 18 deletions
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clients/simple-dmabuf-v4l.c
+38 -18
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@@ -30,6 +30,7 @@
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <getopt.h>
#include <assert.h>
#include <unistd.h>
#include <sys/mman.h>
@@ -913,7 +914,7 @@ destroy_display(struct display *display)
static void
usage(const char *argv0)
{
printf("Usage: %s [V4L2 device] [V4L2 format] [DRM format]\n"
printf("Usage: %s [-v v4l2_device] [-f v4l2_format] [-d drm_format]\n"
"\n"
"The default V4L2 device is /dev/video0\n"
"\n"
@@ -934,7 +935,7 @@ usage(const char *argv0)
"- set the pixel format:\n"
" $ v4l2-ctl -d /dev/video0 --set-fmt-video=width=640,pixelformat=XR24\n"
"- launch the demo:\n"
" $ %s /dev/video0 XR24 XR24\n"
" $ %s -v /dev/video0 -f XR24 -d XR24\n"
"You should see a test pattern with color bars, and some text.\n"
"\n"
"More about vivid: https://www.kernel.org/doc/Documentation/video4linux/vivid.txt\n"
@@ -955,27 +956,46 @@ main(int argc, char **argv)
struct sigaction sigint;
struct display *display;
struct window *window;
const char *v4l_device;
uint32_t v4l_format, drm_format;
int ret = 0;
const char *v4l_device = NULL;
uint32_t v4l_format = 0x0;
uint32_t drm_format = 0x0;
int c, opt_index, ret = 0;
if (argc < 2) {
v4l_device = "/dev/video0";
} else if (!strcmp(argv[1], "--help")) {
usage(argv[0]);
} else {
v4l_device = argv[1];
static struct option long_options[] = {
{ "v4l2-device", required_argument, NULL, 'v' },
{ "v4l2-format", required_argument, NULL, 'f' },
{ "drm-format", required_argument, NULL, 'd' },
{ "help", no_argument, NULL, 'h' },
{ 0, 0, NULL, 0 }
};
while ((c = getopt_long(argc, argv, "hv:d:f:", long_options,
&opt_index)) != -1) {
switch (c) {
case 'v':
v4l_device = optarg;
break;
case 'f':
v4l_format = parse_format(optarg);
break;
case 'd':
drm_format = parse_format(optarg);
break;
default:
case 'h':
usage(argv[0]);
break;
}
}
if (argc < 3)
v4l_format = parse_format("YUYV");
else
v4l_format = parse_format(argv[2]);
if (!v4l_device)
v4l_device = "/dev/video0";
if (argc < 4)
if (v4l_format == 0x0)
v4l_format = parse_format("YUYV");
if (drm_format == 0x0)
drm_format = v4l_format;
else
drm_format = parse_format(argv[3]);
display = create_display(drm_format);
display->format.format = v4l_format;