22 #ifndef AVCODEC_MATHOPS_H
23 #define AVCODEC_MATHOPS_H
31 #define MAX_NEG_CROP 1024
54 # define MUL64(a,b) ((int64_t)(a) * (int64_t)(b))
58 # define MULL(a,b,s) (MUL64(a, b) >> (s))
63 return MUL64(a, b) >> 32;
69 return ((uint64_t)(a) * (uint64_t)(b))>>32;
74 # define MAC64(d, a, b) ((d) += MUL64(a, b))
78 # define MLS64(d, a, b) ((d) -= MUL64(a, b))
83 # define MAC16(rt, ra, rb) rt += (ra) * (rb)
88 # define MUL16(ra, rb) ((ra) * (rb))
92 # define MLS16(rt, ra, rb) ((rt) -= (ra) * (rb))
97 #define mid_pred mid_pred
116 #define median4 median4
120 if (c < d)
return (
FFMIN(b, d) +
FFMAX(a, c)) / 2;
123 if (c < d)
return (
FFMIN(a, d) +
FFMAX(b, c)) / 2;
132 unsigned shift = 8 *
sizeof(
int) - bits;
133 union {
unsigned u;
int s; } v = { (unsigned) val << shift };
141 return (val << ((8 *
sizeof(
int)) - bits)) >> ((8 *
sizeof(
int)) -
bits);
146 #define COPY3_IF_LT(x, y, a, b, c, d)\
155 #define MASK_ABS(mask, level) do { \
156 mask = level >> 31; \
157 level = (level ^ mask) - mask; \
162 # define NEG_SSR32(a,s) ((( int32_t)(a))>>(32-(s)))
166 # define NEG_USR32(a,s) (((uint32_t)(a))>>(32-(s)))
171 # define PACK_2U8(a,b) (((a) << 8) | (b))
174 # define PACK_4U8(a,b,c,d) (((a) << 24) | ((b) << 16) | ((c) << 8) | (d))
177 # define PACK_2U16(a,b) (((a) << 16) | (b))
181 # define PACK_2U8(a,b) (((b) << 8) | (a))
184 # define PACK_4U8(a,b,c,d) (((d) << 24) | ((c) << 16) | ((b) << 8) | (a))
187 # define PACK_2U16(a,b) (((b) << 16) | (a))
192 # define PACK_2S8(a,b) PACK_2U8((a)&255, (b)&255)
195 # define PACK_4S8(a,b,c,d) PACK_4U8((a)&255, (b)&255, (c)&255, (d)&255)
198 # define PACK_2S16(a,b) PACK_2U16((a)&0xffff, (b)&0xffff)
202 # define FASTDIV(a,b) ((uint32_t)((((uint64_t)a) * ff_inverse[b]) >> 32))
206 #define ff_sqrt ff_sqrt
212 else if (a < (1 << 12)) b =
ff_sqrt_tab[a >> 4] >> 2;
214 else if (a < (1 << 14)) b =
ff_sqrt_tab[a >> 6] >> 1;
219 unsigned int c = a >> (s + 2);
224 return b - (a < b *
b);
245 return (uint32_t)
ff_reverse[ x & 0xFF] << 24 |
const char const char void * val
static int shift(int a, int b)
const uint8_t ff_reverse[256]
static av_always_inline uint32_t bitswap_32(uint32_t x)
static int8_t ff_u8_to_s8(uint8_t a)
int av_log2_16bit(unsigned v)
static av_const unsigned zero_extend(unsigned val, unsigned bits)
const uint32_t ff_inverse[257]
const uint8_t ff_sqrt_tab[256]
const uint8_t ff_zigzag_scan[16+1]
static av_always_inline unsigned UMULH(unsigned a, unsigned b)
static av_const float ff_sqrf(float 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)
common internal and external API header