Commit f5ed7431 authored by Pekka Paalanen's avatar Pekka Paalanen Committed by marius vlad

pixel-formats: search by name

Add a function to find a format description by the DRM format name. This
will be useful when parsing configuration strings.

While at it, fix the two function formattings in pixel-formats.h to
match everything else in the file.
Signed-off-by: Pekka Paalanen's avatarPekka Paalanen <pekka.paalanen@collabora.co.uk>
parent e7c91b61
......@@ -30,6 +30,7 @@
#include <inttypes.h>
#include <stdbool.h>
#include <unistd.h>
#include <string.h>
#include <drm_fourcc.h>
#include "helpers.h"
......@@ -387,6 +388,21 @@ pixel_format_get_info(uint32_t format)
return NULL;
}
WL_EXPORT const struct pixel_format_info *
pixel_format_get_info_by_drm_name(const char *drm_format_name)
{
const struct pixel_format_info *info;
unsigned int i;
for (i = 0; i < ARRAY_LENGTH(pixel_format_table); i++) {
info = &pixel_format_table[i];
if (strcasecmp(info->drm_format_name, drm_format_name) == 0)
return info;
}
return NULL;
}
WL_EXPORT unsigned int
pixel_format_get_plane_count(const struct pixel_format_info *info)
{
......
......@@ -112,7 +112,26 @@ struct pixel_format_info {
* @returns A pixel format structure (must not be freed), or NULL if the
* format could not be found
*/
const struct pixel_format_info *pixel_format_get_info(uint32_t format);
const struct pixel_format_info *
pixel_format_get_info(uint32_t format);
/**
* Get pixel format information for a named DRM format
*
* Given a DRM format name, return a pixel format info structure describing
* the properties of that format.
*
* The DRM format name is the preprocessor token name from drm_fourcc.h
* without the DRM_FORMAT_ prefix. The search is also case-insensitive.
* Both "xrgb8888" and "XRGB8888" searches will find DRM_FORMAT_XRGB8888
* for example.
*
* @param drm_format_name DRM format name to get info for (not NULL)
* @returns A pixel format structure (must not be freed), or NULL if the
* name could not be found
*/
const struct pixel_format_info *
pixel_format_get_info_by_drm_name(const char *drm_format_name);
/**
* Get number of planes used by a pixel format
......@@ -140,7 +159,8 @@ pixel_format_get_plane_count(const struct pixel_format_info *format);
* @param format Pixel format info structure
* @returns True if the format is opaque, or false if it has significant alpha
*/
bool pixel_format_is_opaque(const struct pixel_format_info *format);
bool
pixel_format_is_opaque(const struct pixel_format_info *format);
/**
* Get compatible opaque equivalent for a format
......
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