Add a new topic option for -h to allow listing supported media bus codes
in conversion functions. This is useful in figuring out which media bus
codes are actually supported by the library. The numeric values of the
codes are listed as well.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Acked-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
utils/media-ctl/options.c | 39 +++++++++++++++++++++++++++++++++++----
1 file changed, 35 insertions(+), 4 deletions(-)
diff --git a/utils/media-ctl/options.c b/utils/media-ctl/options.c
index 0afc9c2..a288a1b 100644
--- a/utils/media-ctl/options.c
+++ b/utils/media-ctl/options.c
@@ -22,7 +22,9 @@
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include <unistd.h>
+#include <v4l2subdev.h>
#include <linux/videodev2.h>
@@ -48,6 +50,7 @@ static void usage(const char *argv0)
printf("-h, --help Show verbose help and exit\n");
printf("-i, --interactive Modify links interactively\n");
printf("-l, --links links Comma-separated list of link descriptors to setup\n");
+ printf(" --known-mbus-fmts List known media bus formats and their numeric values\n");
printf("-p, --print-topology Print the device topology\n");
printf(" --print-dot Print the device topology as a dot graph\n");
printf("-r, --reset Reset all links to inactive\n");
@@ -88,9 +91,10 @@ static void usage(const char *argv0)
v4l2_subdev_field_to_string(i));
}
-#define OPT_PRINT_DOT 256
-#define OPT_GET_FORMAT 257
-#define OPT_SET_DV 258
+#define OPT_PRINT_DOT 256
+#define OPT_GET_FORMAT 257
+#define OPT_SET_DV 258
+#define OPT_LIST_KNOWN_MBUS_FMTS 259
static struct option opts[] = {
{"device", 1, 0, 'd'},
@@ -103,6 +107,7 @@ static struct option opts[] = {
{"help", 0, 0, 'h'},
{"interactive", 0, 0, 'i'},
{"links", 1, 0, 'l'},
+ {"known-mbus-fmts", 0, 0, OPT_LIST_KNOWN_MBUS_FMTS},
{"print-dot", 0, 0, OPT_PRINT_DOT},
{"print-topology", 0, 0, 'p'},
{"reset", 0, 0, 'r'},
@@ -110,6 +115,27 @@ static struct option opts[] = {
{ },
};
+static void list_known_mbus_formats(void)
+{
+ unsigned int ncodes;
+ const unsigned int *code = v4l2_subdev_pixelcode_list(&ncodes);
+
+ while (ncodes--) {
+ const char *str = v4l2_subdev_pixelcode_to_string(*code);
+ int spaces = 30 - (int)strlen(str);
+
+ if (*code == 0)
+ break;
+
+ if (spaces < 0)
+ spaces = 0;
+
+ printf("%s %*c 0x%4.4x\n", str, spaces, ' ', *code);
+
+ code++;
+ }
+}
+
int parse_cmdline(int argc, char **argv)
{
int opt;
@@ -120,7 +146,8 @@ int parse_cmdline(int argc, char **argv)
}
/* parse options */
- while ((opt = getopt_long(argc, argv, "d:e:f:hil:prvV:", opts, NULL)) != -1) {
+ while ((opt = getopt_long(argc, argv, "d:e:f:hil:prvV:",
+ opts, NULL)) != -1) {
switch (opt) {
case 'd':
media_opts.devname = optarg;
@@ -177,6 +204,10 @@ int parse_cmdline(int argc, char **argv)
media_opts.dv_pad = optarg;
break;
+ case OPT_LIST_KNOWN_MBUS_FMTS:
+ list_known_mbus_formats();
+ exit(0);
+
default:
printf("Invalid option -%c\n", opt);
printf("Run %s -h for help.\n", argv[0]);
--
2.1.0.231.g7484e3b
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