46 #if HAVE_ALTIVEC && HAVE_BIGENDIAN 50 t1 = vec_mradds(a1, vx7, vx1); \ 51 t8 = vec_mradds(a1, vx1, vec_subs(zero, vx7)); \ 52 t7 = vec_mradds(a2, vx5, vx3); \ 53 t3 = vec_mradds(ma2, vx3, vx5); \ 56 t5 = vec_adds(vx0, vx4); \ 57 t0 = vec_subs(vx0, vx4); \ 58 t2 = vec_mradds(a0, vx6, vx2); \ 59 t4 = vec_mradds(a0, vx2, vec_subs(zero, vx6)); \ 60 t6 = vec_adds(t8, t3); \ 61 t3 = vec_subs(t8, t3); \ 62 t8 = vec_subs(t1, t7); \ 63 t1 = vec_adds(t1, t7); \ 66 t7 = vec_adds(t5, t2); \ 67 t2 = vec_subs(t5, t2); \ 68 t5 = vec_adds(t0, t4); \ 69 t0 = vec_subs(t0, t4); \ 70 t4 = vec_subs(t8, t3); \ 71 t3 = vec_adds(t8, t3); \ 74 vy0 = vec_adds(t7, t1); \ 75 vy7 = vec_subs(t7, t1); \ 76 vy1 = vec_mradds(c4, t3, t5); \ 77 vy6 = vec_mradds(mc4, t3, t5); \ 78 vy2 = vec_mradds(c4, t4, t0); \ 79 vy5 = vec_mradds(mc4, t4, t0); \ 80 vy3 = vec_adds(t2, t6); \ 81 vy4 = vec_subs(t2, t6) 84 vec_s16 vy0, vy1, vy2, vy3, vy4, vy5, vy6, vy7; \ 85 vec_s16 t0, t1, t2, t3, t4, t5, t6, t7, t8; \ 87 vec_s16 c4 = vec_splat(constants[0], 0); \ 88 vec_s16 a0 = vec_splat(constants[0], 1); \ 89 vec_s16 a1 = vec_splat(constants[0], 2); \ 90 vec_s16 a2 = vec_splat(constants[0], 3); \ 91 vec_s16 mc4 = vec_splat(constants[0], 4); \ 92 vec_s16 ma2 = vec_splat(constants[0], 5); \ 93 vec_s16 bias = (vec_s16) vec_splat((vec_s32) constants[0], 3); \ 95 vec_s16 zero = vec_splat_s16(0); \ 96 vec_u16 shift = vec_splat_u16(4); \ 98 vec_s16 vx0 = vec_mradds(vec_sl(block[0], shift), constants[1], zero); \ 99 vec_s16 vx1 = vec_mradds(vec_sl(block[1], shift), constants[2], zero); \ 100 vec_s16 vx2 = vec_mradds(vec_sl(block[2], shift), constants[3], zero); \ 101 vec_s16 vx3 = vec_mradds(vec_sl(block[3], shift), constants[4], zero); \ 102 vec_s16 vx4 = vec_mradds(vec_sl(block[4], shift), constants[1], zero); \ 103 vec_s16 vx5 = vec_mradds(vec_sl(block[5], shift), constants[4], zero); \ 104 vec_s16 vx6 = vec_mradds(vec_sl(block[6], shift), constants[3], zero); \ 105 vec_s16 vx7 = vec_mradds(vec_sl(block[7], shift), constants[2], zero); \ 109 vx0 = vec_mergeh(vy0, vy4); \ 110 vx1 = vec_mergel(vy0, vy4); \ 111 vx2 = vec_mergeh(vy1, vy5); \ 112 vx3 = vec_mergel(vy1, vy5); \ 113 vx4 = vec_mergeh(vy2, vy6); \ 114 vx5 = vec_mergel(vy2, vy6); \ 115 vx6 = vec_mergeh(vy3, vy7); \ 116 vx7 = vec_mergel(vy3, vy7); \ 118 vy0 = vec_mergeh(vx0, vx4); \ 119 vy1 = vec_mergel(vx0, vx4); \ 120 vy2 = vec_mergeh(vx1, vx5); \ 121 vy3 = vec_mergel(vx1, vx5); \ 122 vy4 = vec_mergeh(vx2, vx6); \ 123 vy5 = vec_mergel(vx2, vx6); \ 124 vy6 = vec_mergeh(vx3, vx7); \ 125 vy7 = vec_mergel(vx3, vx7); \ 127 vx0 = vec_adds(vec_mergeh(vy0, vy4), bias); \ 128 vx1 = vec_mergel(vy0, vy4); \ 129 vx2 = vec_mergeh(vy1, vy5); \ 130 vx3 = vec_mergel(vy1, vy5); \ 131 vx4 = vec_mergeh(vy2, vy6); \ 132 vx5 = vec_mergel(vy2, vy6); \ 133 vx6 = vec_mergeh(vy3, vy7); \ 134 vx7 = vec_mergel(vy3, vy7); \ 138 shift = vec_splat_u16(6); \ 139 vx0 = vec_sra(vy0, shift); \ 140 vx1 = vec_sra(vy1, shift); \ 141 vx2 = vec_sra(vy2, shift); \ 142 vx3 = vec_sra(vy3, shift); \ 143 vx4 = vec_sra(vy4, shift); \ 144 vx5 = vec_sra(vy5, shift); \ 145 vx6 = vec_sra(vy6, shift); \ 146 vx7 = vec_sra(vy7, shift) 148 static const vec_s16 constants[5] = {
149 { 23170, 13573, 6518, 21895, -23170, -21895, 32, 31 },
150 { 16384, 22725, 21407, 19266, 16384, 19266, 21407, 22725 },
151 { 22725, 31521, 29692, 26722, 22725, 26722, 29692, 31521 },
152 { 21407, 29692, 27969, 25172, 21407, 25172, 27969, 29692 },
153 { 19266, 26722, 25172, 22654, 19266, 22654, 25172, 26722 }
163 #define COPY(dest, src) \ 164 tmp = vec_packsu(src, src); \ 165 vec_ste((vec_u32) tmp, 0, (unsigned int *) dest); \ 166 vec_ste((vec_u32) tmp, 4, (unsigned int *) dest) 196 p0 = vec_lvsl(0, dest);
197 p1 = vec_lvsl(stride, dest);
198 p = vec_splat_u8(-1);
199 perm0 = vec_mergeh(p, p0);
200 perm1 = vec_mergeh(p, p1);
202 #define ADD(dest, src, perm) \ 204 tmp = vec_ld(0, dest); \ 205 tmp2 = (vec_s16) vec_perm(tmp, (vec_u8) zero, perm); \ 206 tmp3 = vec_adds(tmp2, src); \ 207 tmp = vec_packsu(tmp3, tmp3); \ 208 vec_ste((vec_u32) tmp, 0, (unsigned int *) dest); \ 209 vec_ste((vec_u32) tmp, 4, (unsigned int *) dest) 211 ADD(dest, vx0, perm0);
213 ADD(dest, vx1, perm1);
215 ADD(dest, vx2, perm0);
217 ADD(dest, vx3, perm1);
219 ADD(dest, vx4, perm0);
221 ADD(dest, vx5, perm1);
223 ADD(dest, vx6, perm0);
225 ADD(dest, vx7, perm1);
231 unsigned high_bit_depth)
233 #if HAVE_ALTIVEC && HAVE_BIGENDIAN 237 if (!high_bit_depth) {
void(* idct_add)(uint8_t *dest, int line_size, int16_t *block)
block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
Macro definitions for various function/variable attributes.
av_cold void ff_idctdsp_init_ppc(IDCTDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)
#define PPC_ALTIVEC(flags)
void(* idct_put)(uint8_t *dest, int line_size, int16_t *block)
block -> idct -> clip to unsigned 8 bit -> dest.
int idct_algo
IDCT algorithm, see FF_IDCT_* below.
main external API structure.
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
enum idct_permutation_type perm_type