diff options
| -rw-r--r-- | libavcodec/huffyuvencdsp.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/libavcodec/huffyuvencdsp.c b/libavcodec/huffyuvencdsp.c index 7edcce872b..427d118be4 100644 --- a/libavcodec/huffyuvencdsp.c +++ b/libavcodec/huffyuvencdsp.c @@ -21,6 +21,9 @@ #include "huffyuvencdsp.h" #include "mathops.h" +// 0x00010001 or 0x0001000100010001 or whatever, depending on the cpu's native arithmetic size +#define pw_1 (ULONG_MAX / UINT16_MAX) + static void diff_int16_c(uint16_t *dst, const uint16_t *src1, const uint16_t *src2, unsigned mask, int w){ long i; #if !HAVE_FAST_UNALIGNED @@ -34,8 +37,8 @@ static void diff_int16_c(uint16_t *dst, const uint16_t *src1, const uint16_t *sr }else #endif { - unsigned long pw_lsb = (mask >> 1) * 0x0001000100010001ULL; - unsigned long pw_msb = pw_lsb + 0x0001000100010001ULL; + unsigned long pw_lsb = (mask >> 1) * pw_1; + unsigned long pw_msb = pw_lsb + pw_1; for (i = 0; i <= w - (int)sizeof(long)/2; i += sizeof(long)/2) { long a = *(long*)(src1+i); |