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pixel-formats: add pixel_format_get_array()

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Add a helper function to turn an array of DRM fourccs into an array of
corresponding struct pixel_format_info pointers.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
This commit is contained in:
Philipp Zabel 2023-01-29 14:34:40 +01:00
parent efffd0d8a4
commit 782fd7f370
2 changed files with 33 additions and 0 deletions
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19
libweston/pixel-formats.c
View File

@ -40,6 +40,7 @@
#include "shared/helpers.h"
#include "shared/string-helpers.h"
#include "shared/weston-drm-fourcc.h"
#include "shared/xalloc.h"
#include "wayland-util.h"
#include "pixel-formats.h"
@ -776,3 +777,21 @@ pixel_format_get_shm_format(const struct pixel_format_info *info)
return info->format;
}
WL_EXPORT const struct pixel_format_info **
pixel_format_get_array(const uint32_t *drm_formats, unsigned int formats_count)
{
const struct pixel_format_info **formats;
unsigned int i;
formats = xcalloc(formats_count, sizeof(*formats));
for (i = 0; i < formats_count; i++) {
formats[i] = pixel_format_get_info(drm_formats[i]);
if (!formats[i]) {
free(formats);
return NULL;
}
}
return formats;
}

14
libweston/pixel-formats.h
View File

@ -354,3 +354,17 @@ pixel_format_get_modifier(uint64_t modifier);
*/
uint32_t
pixel_format_get_shm_format(const struct pixel_format_info *info);
/**
* Get pixel format array for an array of DRM format codes
*
* Given an array of DRM format codes, return an array of corresponding pixel
* format info pointers.
*
* @param formats Array of DRM format codes to get info for
* @param formats_count Number of entries in formats.
* @returns An array of pixel format info pointers, or NULL if any format could
* not be found. Must be freed by the caller.
*/
const struct pixel_format_info **
pixel_format_get_array(const uint32_t *formats, unsigned int formats_count);