22 #ifndef AVCODEC_MATHOPS_H
23 #define AVCODEC_MATHOPS_H
27 #include "libavutil/common.h"
30 #define MAX_NEG_CROP 1024
43 # include "bfin/mathops.h"
55 # define MUL64(a,b) ((int64_t)(a) * (int64_t)(b))
59 # define MULL(a,b,s) (MUL64(a, b) >> (s))
64 return MUL64(a, b) >> 32;
70 return ((uint64_t)(a) * (uint64_t)(b))>>32;
75 # define MAC64(d, a, b) ((d) += MUL64(a, b))
79 # define MLS64(d, a, b) ((d) -= MUL64(a, b))
84 # define MAC16(rt, ra, rb) rt += (ra) * (rb)
89 # define MUL16(ra, rb) ((ra) * (rb))
93 # define MLS16(rt, ra, rb) ((rt) -= (ra) * (rb))
98 #define mid_pred mid_pred
102 int t= (a-
b)&((a-b)>>31);
105 b-= (b-c)&((b-c)>>31);
106 b+= (a-
b)&((a-b)>>31);
129 unsigned shift = 8 *
sizeof(int) - bits;
130 union {
unsigned u;
int s; } v = { (unsigned) val << shift };
138 return (val << ((8 *
sizeof(
int)) - bits)) >> ((8 *
sizeof(int)) -
bits);
143 #define COPY3_IF_LT(x, y, a, b, c, d)\
152 #define MASK_ABS(mask, level) do { \
153 mask = level >> 31; \
154 level = (level ^ mask) - mask; \
159 # define NEG_SSR32(a,s) ((( int32_t)(a))>>(32-(s)))
163 # define NEG_USR32(a,s) (((uint32_t)(a))>>(32-(s)))
168 # define PACK_2U8(a,b) (((a) << 8) | (b))
171 # define PACK_4U8(a,b,c,d) (((a) << 24) | ((b) << 16) | ((c) << 8) | (d))
174 # define PACK_2U16(a,b) (((a) << 16) | (b))
178 # define PACK_2U8(a,b) (((b) << 8) | (a))
181 # define PACK_4U8(a,b,c,d) (((d) << 24) | ((c) << 16) | ((b) << 8) | (a))
184 # define PACK_2U16(a,b) (((b) << 16) | (a))
189 # define PACK_2S8(a,b) PACK_2U8((a)&255, (b)&255)
192 # define PACK_4S8(a,b,c,d) PACK_4U8((a)&255, (b)&255, (c)&255, (d)&255)
195 # define PACK_2S16(a,b) PACK_2U16((a)&0xffff, (b)&0xffff)
199 # define FASTDIV(a,b) ((uint32_t)((((uint64_t)a) * ff_inverse[b]) >> 32))
207 else if (a < (1 << 12)) b =
ff_sqrt_tab[a >> 4] >> 2;
209 else if (a < (1 << 14)) b =
ff_sqrt_tab[a >> 6] >> 1;
214 unsigned int c = a >> (s + 2);
219 return b - (a < b *
b);
static int8_t ff_u8_to_s8(uint8_t a)
static av_const unsigned zero_extend(unsigned val, unsigned bits)
const uint32_t ff_inverse[257]
const uint8_t ff_sqrt_tab[256]
static av_always_inline unsigned UMULH(unsigned a, unsigned b)
static av_const unsigned int ff_sqrt(unsigned int a)
const uint8_t ff_crop_tab[256+2 *MAX_NEG_CROP]
const uint8_t ff_zigzag_direct[64]
static av_always_inline int MULH(int a, int b)
static av_const int sign_extend(int val, unsigned bits)
const uint8_t ff_reverse[256]