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pixels: Handle different endianness for alpha mask

pull/63/head
Andri Yngvason 2022-02-06 17:36:19 +00:00
parent c0d1455686
commit 9a292afd52
1 changed files with 22 additions and 1 deletions
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23
src/pixels.c
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2019 - 2021 Andri Yngvason
* Copyright (c) 2019 - 2022 Andri Yngvason
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@ -391,6 +391,7 @@ bool extract_alpha_mask(uint8_t* dst, const void* src, uint32_t format,
memset(dst, 0, UDIV_UP(len, 8));
switch (format & ~DRM_FORMAT_BIG_ENDIAN) {
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
case DRM_FORMAT_RGBA1010102:
case DRM_FORMAT_BGRA1010102:
return extract_alpha_mask_rgba32(dst, src, len, 0, 3);
@ -409,6 +410,26 @@ bool extract_alpha_mask(uint8_t* dst, const void* src, uint32_t format,
case DRM_FORMAT_ARGB4444:
case DRM_FORMAT_ABGR4444:
return extract_alpha_mask_rgba16(dst, src, len, 12);
#else
case DRM_FORMAT_RGBA1010102:
case DRM_FORMAT_BGRA1010102:
return extract_alpha_mask_rgba32(dst, src, len, 30, 3);
case DRM_FORMAT_ARGB2101010:
case DRM_FORMAT_ABGR2101010:
return extract_alpha_mask_rgba32(dst, src, len, 0, 3);
case DRM_FORMAT_RGBA8888:
case DRM_FORMAT_BGRA8888:
return extract_alpha_mask_rgba32(dst, src, len, 24, 0xff);
case DRM_FORMAT_ARGB8888:
case DRM_FORMAT_ABGR8888:
return extract_alpha_mask_rgba32(dst, src, len, 0, 0xff);
case DRM_FORMAT_RGBA4444:
case DRM_FORMAT_BGRA4444:
return extract_alpha_mask_rgba16(dst, src, len, 12);
case DRM_FORMAT_ARGB4444:
case DRM_FORMAT_ABGR4444:
return extract_alpha_mask_rgba16(dst, src, len, 0);
#endif
}
return false;