From baa4b8cafca0d52189bfd6e7cda9c558a261ae71 Mon Sep 17 00:00:00 2001 From: Simon Ser Date: Sun, 21 Aug 2022 14:17:35 +0200 Subject: [PATCH] xf86drm: add drmGetFormatName() Same as drmGetFormatModifierName() but for formats. Signed-off-by: Simon Ser Reviewed-by: Marius Vlad Reviewed-by: Eric Engestrom --- core-symbols.txt | 1 + xf86drm.c | 35 +++++++++++++++++++++++++++++++++++ xf86drm.h | 3 +++ 3 files changed, 39 insertions(+) diff --git a/core-symbols.txt b/core-symbols.txt index da98a6a..6c5a4af 100644 --- a/core-symbols.txt +++ b/core-symbols.txt @@ -203,3 +203,4 @@ drmUpdateDrawableInfo drmWaitVBlank drmGetFormatModifierName drmGetFormatModifierVendor +drmGetFormatName diff --git a/xf86drm.c b/xf86drm.c index cca126b..42c1a5d 100644 --- a/xf86drm.c +++ b/xf86drm.c @@ -5106,3 +5106,38 @@ drmGetFormatModifierName(uint64_t modifier) return modifier_found; } + +/** + * Get a human-readable name for a DRM FourCC format. + * + * \param format The format. + * \return A malloc'ed string containing the format name. Caller is responsible + * for freeing it. + */ +drm_public char * +drmGetFormatName(uint32_t format) +{ + char *str; + size_t str_size, i; + char a, b, c, d; + + if (format == DRM_FORMAT_INVALID) + return strdup("INVALID"); + + str_size = 5; + str = malloc(str_size); + if (!str) + return NULL; + + a = (char) ((format >> 0) & 0xFF); + b = (char) ((format >> 8) & 0xFF); + c = (char) ((format >> 16) & 0xFF); + d = (char) ((format >> 24) & 0xFF); + snprintf(str, str_size, "%c%c%c%c", a, b, c, d); + + /* Trim spaces at the end */ + for (i = 3; i > 0 && str[i] == ' '; i--) + str[i] = '\0'; + + return str; +} diff --git a/xf86drm.h b/xf86drm.h index 1631396..4badaae 100644 --- a/xf86drm.h +++ b/xf86drm.h @@ -954,6 +954,9 @@ drmGetFormatModifierVendor(uint64_t modifier); extern char * drmGetFormatModifierName(uint64_t modifier); +extern char * +drmGetFormatName(uint32_t format); + #ifndef fourcc_mod_get_vendor #define fourcc_mod_get_vendor(modifier) \ (((modifier) >> 56) & 0xff) -- 2.7.4