gador/nixpkgs
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

libyuv: Apply patch to fix ARGBToRGB565DitherRow_C on big-endian (#425499)

Browse Source
This commit is contained in:
Cosima Neidahl
2025-07-23 10:58:22 +02:00
committed by GitHub
parent 4e99205fd5 369d01f47a
commit 596809abf4
2 changed files with 37 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
pkgs/by-name/li/libyuv/dither-honour-byte-order.patch
+32
View File
@@ -0,0 +1,32 @@
diff '--color=auto' -ruN a/source/row_common.cc b/source/row_common.cc
--- a/source/row_common.cc 2025-07-15 17:55:24.611751521 +0200
+++ b/source/row_common.cc 2025-07-15 18:01:57.808312551 +0200
@@ -104,8 +104,13 @@
#if defined(__x86_64__) || defined(_M_X64) || defined(__i386__) || \
defined(_M_IX86) || defined(__arm__) || defined(_M_ARM) || \
(defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
+#define WRITE16(p, v) *(uint16_t*)(p) = v
#define WRITEWORD(p, v) *(uint32_t*)(p) = v
#else
+static inline void WRITE16(uint8_t* p, uint16_t v) {
+ p[0] = (uint8_t)(v & 255);
+ p[1] = (uint8_t)((v >> 8) & 255);
+}
static inline void WRITEWORD(uint8_t* p, uint32_t v) {
p[0] = (uint8_t)(v & 255);
p[1] = (uint8_t)((v >> 8) & 255);
@@ -408,10 +413,10 @@
uint8_t b1 = STATIC_CAST(uint8_t, clamp255(src_argb[4] + dither1) >> 3);
uint8_t g1 = STATIC_CAST(uint8_t, clamp255(src_argb[5] + dither1) >> 2);
uint8_t r1 = STATIC_CAST(uint8_t, clamp255(src_argb[6] + dither1) >> 3);
- *(uint16_t*)(dst_rgb + 0) =
- STATIC_CAST(uint16_t, b0 | (g0 << 5) | (r0 << 11));
- *(uint16_t*)(dst_rgb + 2) =
- STATIC_CAST(uint16_t, b1 | (g1 << 5) | (r1 << 11));
+ WRITE16((dst_rgb + 0),
+ STATIC_CAST(uint16_t, b0 | (g0 << 5) | (r0 << 11)));
+ WRITE16((dst_rgb + 2),
+ STATIC_CAST(uint16_t, b1 | (g1 << 5) | (r1 << 11)));
dst_rgb += 4;
src_argb += 8;
}
pkgs/by-name/li/libyuv/package.nix
+5
View File
@@ -17,6 +17,11 @@ stdenv.mkDerivation {
hash = "sha256-4Irs+hlAvr6v5UKXmKHhg4IK3cTWdsFWxt1QTS0rizU=";
};
patches = [
# Fixes wrong byte order in ARGBToRGB565DitherRow_C on big-endian
./dither-honour-byte-order.patch
];
nativeBuildInputs = [
cmake
];