35 {0, 64277, 60547, 54491, 46341, 36410, 25080, 12785};
37 static const vec_u8 interleave_high =
38 {0, 1, 16, 17, 4, 5, 20, 21, 8, 9, 24, 25, 12, 13, 28, 29};
40 static const vec_u8 interleave_high =
41 {2, 3, 18, 19, 6, 7, 22, 23, 10, 11, 26, 27, 14, 15, 30, 31};
45 vec_s16 A, B, C, D, Ad, Bd, Cd, Dd, E, F, G, H;\ 46 vec_s16 Ed, Gd, Add, Bdd, Fd, Hd;\ 47 vec_s16 eight = vec_splat_s16(8);\ 48 vec_u16 four = vec_splat_u16(4);\ 50 vec_s16 C1 = vec_splat(constants, 1);\ 51 vec_s16 C2 = vec_splat(constants, 2);\ 52 vec_s16 C3 = vec_splat(constants, 3);\ 53 vec_s16 C4 = vec_splat(constants, 4);\ 54 vec_s16 C5 = vec_splat(constants, 5);\ 55 vec_s16 C6 = vec_splat(constants, 6);\ 56 vec_s16 C7 = vec_splat(constants, 7);\ 58 vec_s16 b0 = vec_ld(0x00, block);\ 59 vec_s16 b1 = vec_ld(0x10, block);\ 60 vec_s16 b2 = vec_ld(0x20, block);\ 61 vec_s16 b3 = vec_ld(0x30, block);\ 62 vec_s16 b4 = vec_ld(0x40, block);\ 63 vec_s16 b5 = vec_ld(0x50, block);\ 64 vec_s16 b6 = vec_ld(0x60, block);\ 65 vec_s16 b7 = vec_ld(0x70, block); 73 return (
vec_s16)vec_perm(vec_mule(a,C), vec_mulo(a,C), interleave_high);
77 return vec_add(a, M15(a, C));
80 #define IDCT_1D(ADD, SHIFT)\ 81 A = vec_add(M16(b1, C1), M15(b7, C7));\ 82 B = vec_sub(M15(b1, C7), M16(b7, C1));\ 83 C = vec_add(M16(b3, C3), M16(b5, C5));\ 84 D = vec_sub(M16(b5, C3), M16(b3, C5));\ 86 Ad = M16(vec_sub(A, C), C4);\ 87 Bd = M16(vec_sub(B, D), C4);\ 92 E = ADD(M16(vec_add(b0, b4), C4));\ 93 F = ADD(M16(vec_sub(b0, b4), C4));\ 95 G = vec_add(M16(b2, C2), M15(b6, C6));\ 96 H = vec_sub(M15(b2, C6), M16(b6, C2));\ 101 Add = vec_add(F, Ad);\ 102 Bdd = vec_sub(Bd, H);\ 104 Fd = vec_sub(F, Ad);\ 105 Hd = vec_add(Bd, H);\ 107 b0 = SHIFT(vec_add(Gd, Cd));\ 108 b7 = SHIFT(vec_sub(Gd, Cd));\ 110 b1 = SHIFT(vec_add(Add, Hd));\ 111 b2 = SHIFT(vec_sub(Add, Hd));\ 113 b3 = SHIFT(vec_add(Ed, Dd));\ 114 b4 = SHIFT(vec_sub(Ed, Dd));\ 116 b5 = SHIFT(vec_add(Fd, Bdd));\ 117 b6 = SHIFT(vec_sub(Fd, Bdd)); 120 #define ADD8(a) vec_add(a, eight) 121 #define SHIFT4(a) vec_sra(a, four) 129 vec_s16 v2048 = vec_sl(vec_splat_s16(1), vec_splat_u16(11));
130 eight = vec_add(eight, v2048);
133 TRANSPOSE8(b0, b1, b2, b3, b4, b5, b6, b7);
134 IDCT_1D(ADD8, SHIFT4)
137 t = vec_packsu(a, a);\ 138 vec_ste((vec_u32)t, 0, (unsigned int *)dst);\ 139 vec_ste((vec_u32)t, 4, (unsigned int *)dst); 149 memset(block, 0,
sizeof(*block) * 64);
152 static void vp3_idct_add_altivec(
uint8_t *dst, ptrdiff_t stride, int16_t block[64])
157 vec_u8 vdst_mask = vec_mergeh(vec_splat_u8(-1), vec_lvsl(0, dst));
162 TRANSPOSE8(b0, b1, b2, b3, b4, b5, b6, b7);
163 IDCT_1D(ADD8, SHIFT4)
167 vdst = vec_ld(0, dst);\ 168 vdst_16 = (vec_s16)vec_perm(vdst, zero_u8v, vdst_mask); 171 vdst = vec_vsx_ld(0,dst);\ 172 vdst_16 = (vec_s16)vec_mergeh(vdst, zero_u8v); 177 vdst_16 = vec_adds(a, vdst_16);\ 178 t = vec_packsu(vdst_16, vdst_16);\ 179 vec_ste((vec_u32)t, 0, (unsigned int *)dst);\ 180 vec_ste((vec_u32)t, 4, (unsigned int *)dst); 190 memset(block, 0,
sizeof(*block) * 64);
Macro definitions for various function/variable attributes.
void(* idct_add)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
#define PPC_ALTIVEC(flags)
static const struct @244 constants[]
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Contains misc utility macros and inline functions.
av_cold void ff_vp3dsp_init_ppc(VP3DSPContext *c, int flags)
void(* idct_put)(uint8_t *dest, ptrdiff_t stride, int16_t *block)