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author | Iru Cai <mytbk920423@gmail.com> | 2018-09-06 16:59:13 +0800 |
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committer | Iru Cai <mytbk920423@gmail.com> | 2018-09-06 16:59:13 +0800 |
commit | 8175b89a4b26eae0ee5303a25769b28c03eb3680 (patch) | |
tree | 1d705dea705c206f9dcd7d0899670f221f224543 /csrc/bit_functions.c | |
parent | adb71a489fa1a0fdd5ae5529efa62e316bbf661c (diff) | |
download | rich4-8175b89a4b26eae0ee5303a25769b28c03eb3680.tar.xz |
fcn_4551f0
Diffstat (limited to 'csrc/bit_functions.c')
-rw-r--r-- | csrc/bit_functions.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/csrc/bit_functions.c b/csrc/bit_functions.c index b17af04..803143a 100644 --- a/csrc/bit_functions.c +++ b/csrc/bit_functions.c @@ -1,6 +1,7 @@ #include <stdint.h> #include <stddef.h> +typedef uint32_t (*bit_f_u32)(uint32_t); typedef void (*bit_f)(uint16_t*, uint16_t*, uint8_t*, size_t); extern int pixel_fmt; @@ -54,6 +55,19 @@ void fcn_4553a1(uint16_t *edi, uint16_t *esi, uint8_t *ebx, size_t ecx) } while (--ecx); } +uint32_t fcn_45525c(uint32_t eax) +{ + // return {16'b0,eax[23:19],eax[15:10],eax[7:3]} + uint32_t t1 = ((eax >> 19) & 0x1f) << 11; + uint32_t t2 = ((eax >> 10) & 0x3f) << 5; + uint32_t t3 = ((eax >> 3) & 0x1f); + return (t1 | t2 | t3); +} + +const bit_f_u32 ftable_485948[4] = { + 0x0045523eU, fcn_45525c, 0x0045527aU, 0x00455299U +}; + const bit_f ftable_485958[] = { fcn_455337, fcn_45536c, fcn_45536c, fcn_4553a1 }; @@ -69,3 +83,7 @@ void fcn_004552b7(void * dst, void * src, size_t a3, int a4) ftable_485958[pixel_fmt](dst, src, (uint8_t*)(0x485d68 + (a4 << 5)), a3 >> 1); } +uint32_t fcn_4551f0(uint32_t a0) +{ + return ftable_485948[pixel_fmt](a0); +} |