v4l2-sysfs-path: Allow choosing the display mode

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/utils/v4l2-sysfs-path/v4l2-sysfs-path.c b/utils/v4l2-sysfs-path/v4l2-sysfs-path.c
index d204ad2..abb6b86 100644 (file)
--- a/utils/v4l2-sysfs-path/v4l2-sysfs-path.c
+++ b/utils/v4l2-sysfs-path/v4l2-sysfs-path.c
@@ -26,6 +26,34 @@
 
 #include "../libmedia_dev/get_media_devices.h"
 #include <stdio.h>
+#include <argp.h>
+
+const char *argp_program_version = "v4l2-sysfs-path version " V4L_UTILS_VERSION;
+const char *argp_program_bug_address = "Mauro Carvalho Chehab <mchehab@redhat.com>";
+
+static const struct argp_option options[] = {
+       {"device", 'd', 0, 0, "use alternative device show mode", 0},
+       { 0, 0, 0, 0, 0, 0 }
+};
+
+static int device_mode = 0;
+
+static error_t parse_opt(int k, char *arg, struct argp_state *state)
+{
+       switch (k) {
+       case 'd':
+               device_mode++;
+               break;
+       default:
+               return ARGP_ERR_UNKNOWN;
+       }
+       return 0;
+}
+
+static struct argp argp = {
+       .options = options,
+       .parser = parse_opt,
+};
 
 static void print_all_associated_devices(void *md, const char *vid,
                                         const enum device_type type)
@@ -70,27 +98,33 @@ static void print_all_alsa_independent_playback(void *md)
                printf("\n");
 }
 
-int main(void)
+int main(int argc, char *argv[])
 {
        void *md;
        const char *vid;
        int i;
 
+       argp_parse(&argp, argc, argv, 0, 0, 0);
+
        md = discover_media_devices();
 
-       vid = NULL;
-       do {
-               vid = get_associated_device(md, vid, MEDIA_V4L_VIDEO,
-                                           NULL, NONE);
-               if (!vid)
-                       break;
-               printf("Video device: %s\n", vid);
+       if (device_mode) {
+               display_media_devices(md);
+       } else {
+               vid = NULL;
+               do {
+                       vid = get_associated_device(md, vid, MEDIA_V4L_VIDEO,
+                                               NULL, NONE);
+                       if (!vid)
+                               break;
+                       printf("Video device: %s\n", vid);
 
-               for (i = 0; i <= MEDIA_SND_HW; i++)
-                       print_all_associated_devices(md, vid, i);
-       } while (vid);
+                       for (i = 0; i <= MEDIA_SND_HW; i++)
+                               print_all_associated_devices(md, vid, i);
+               } while (vid);
 
-       print_all_alsa_independent_playback(md);
+               print_all_alsa_independent_playback(md);
+       }
 
        free_media_devices(md);