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clients/weston-info: print unknown formats better

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Don't just dump the raw 32-bit values, try to interpret it as a DRM
fourcc too.

This prints properly the formats YUYV, NV12 and YU12 supported by
Weston.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
This commit is contained in:
Pekka Paalanen 2017-02-13 16:35:00 +02:00
parent 4d6eb17a36
commit 78dc6a9a02
1 changed files with 28 additions and 1 deletions
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29
clients/weston-info.c
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@ -30,6 +30,8 @@
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <assert.h>
#include <ctype.h>
#include <wayland-client.h>
@ -240,9 +242,33 @@ print_output_info(void *data)
}
}
static char
bits2graph(uint32_t value, unsigned bitoffset)
{
int c = (value >> bitoffset) & 0xff;
if (isgraph(c) || isspace(c))
return c;
return '?';
}
static void
fourcc2str(uint32_t format, char *str, int len)
{
int i;
assert(len >= 5);
for (i = 0; i < 4; i++)
str[i] = bits2graph(format, i * 8);
str[i] = '\0';
}
static void
print_shm_info(void *data)
{
char str[5];
struct shm_info *shm = data;
struct shm_format *format;
@ -262,7 +288,8 @@ print_shm_info(void *data)
printf(" RGB565");
break;
default:
printf(" unknown(%08x)", format->format);
fourcc2str(format->format, str, sizeof(str));
printf(" '%s'(0x%08x)", str, format->format);
break;
}