22 #ifndef AVCODEC_MATHOPS_H
23 #define AVCODEC_MATHOPS_H
45 # define MUL64(a,b) ((int64_t)(a) * (int64_t)(b))
49 # define MULL(a,b,s) (MUL64(a, b) >> (s))
54 return MUL64(a, b) >> 32;
60 return ((uint64_t)(a) * (uint64_t)(b))>>32;
65 # define MAC64(d, a, b) ((d) += MUL64(a, b))
69 # define MLS64(d, a, b) ((d) -= MUL64(a, b))
74 # define MAC16(rt, ra, rb) rt += (ra) * (rb)
79 # define MUL16(ra, rb) ((ra) * (rb))
83 # define MLS16(rt, ra, rb) ((rt) -= (ra) * (rb))
88 #define mid_pred mid_pred
92 int t= (a-
b)&((a-b)>>31);
95 b-= (b-c)&((b-c)>>31);
96 b+= (a-
b)&((a-b)>>31);
119 unsigned shift = 8 *
sizeof(int) - bits;
120 union {
unsigned u;
int s; }
v = { (unsigned) val << shift };
128 return (val << ((8 *
sizeof(
int)) - bits)) >> ((8 *
sizeof(int)) -
bits);
133 #define COPY3_IF_LT(x, y, a, b, c, d)\
142 # define NEG_SSR32(a,s) ((( int32_t)(a))>>(32-(s)))
146 # define NEG_USR32(a,s) (((uint32_t)(a))>>(32-(s)))
151 # define PACK_2U8(a,b) (((a) << 8) | (b))
154 # define PACK_4U8(a,b,c,d) (((a) << 24) | ((b) << 16) | ((c) << 8) | (d))
157 # define PACK_2U16(a,b) (((a) << 16) | (b))
161 # define PACK_2U8(a,b) (((b) << 8) | (a))
164 # define PACK_4U8(a,b,c,d) (((d) << 24) | ((c) << 16) | ((b) << 8) | (a))
167 # define PACK_2U16(a,b) (((b) << 16) | (a))
172 # define PACK_2S8(a,b) PACK_2U8((a)&255, (b)&255)
175 # define PACK_4S8(a,b,c,d) PACK_4U8((a)&255, (b)&255, (c)&255, (d)&255)
178 # define PACK_2S16(a,b) PACK_2U16((a)&0xffff, (b)&0xffff)
static av_const unsigned zero_extend(unsigned val, unsigned bits)
static av_always_inline unsigned UMULH(unsigned a, unsigned b)
static av_always_inline int MULH(int a, int b)
static av_const int sign_extend(int val, unsigned bits)
common internal and external API header