1/* 2 * Copyright (c) 2006 Luca Barbato <lu_zero@gentoo.org> 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * FFmpeg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21#include "util_altivec.h" 22#include "float_dsp_altivec.h" 23 24void ff_vector_fmul_altivec(float *dst, const float *src0, const float *src1, 25 int len) 26{ 27 int i; 28 vector float d0, d1, s, zero = (vector float)vec_splat_u32(0); 29 for (i = 0; i < len - 7; i += 8) { 30 d0 = vec_ld( 0, src0 + i); 31 s = vec_ld( 0, src1 + i); 32 d1 = vec_ld(16, src0 + i); 33 d0 = vec_madd(d0, s, zero); 34 d1 = vec_madd(d1, vec_ld(16, src1 + i), zero); 35 vec_st(d0, 0, dst + i); 36 vec_st(d1, 16, dst + i); 37 } 38} 39 40void ff_vector_fmul_window_altivec(float *dst, const float *src0, 41 const float *src1, const float *win, int len) 42{ 43 vector float zero, t0, t1, s0, s1, wi, wj; 44 const vector unsigned char reverse = vcprm(3, 2, 1, 0); 45 int i, j; 46 47 dst += len; 48 win += len; 49 src0 += len; 50 51 zero = (vector float)vec_splat_u32(0); 52 53 for (i = -len * 4, j = len * 4 - 16; i < 0; i += 16, j -= 16) { 54 s0 = vec_ld(i, src0); 55 s1 = vec_ld(j, src1); 56 wi = vec_ld(i, win); 57 wj = vec_ld(j, win); 58 59 s1 = vec_perm(s1, s1, reverse); 60 wj = vec_perm(wj, wj, reverse); 61 62 t0 = vec_madd(s0, wj, zero); 63 t0 = vec_nmsub(s1, wi, t0); 64 t1 = vec_madd(s0, wi, zero); 65 t1 = vec_madd(s1, wj, t1); 66 t1 = vec_perm(t1, t1, reverse); 67 68 vec_st(t0, i, dst); 69 vec_st(t1, j, dst); 70 } 71} 72 73void ff_vector_fmul_add_altivec(float *dst, const float *src0, 74 const float *src1, const float *src2, 75 int len) 76{ 77 int i; 78 vector float d, s0, s1, s2, t0, t1, edges; 79 vector unsigned char align = vec_lvsr(0,dst), 80 mask = vec_lvsl(0, dst); 81 82 for (i = 0; i < len - 3; i += 4) { 83 t0 = vec_ld(0, dst + i); 84 t1 = vec_ld(15, dst + i); 85 s0 = vec_ld(0, src0 + i); 86 s1 = vec_ld(0, src1 + i); 87 s2 = vec_ld(0, src2 + i); 88 edges = vec_perm(t1, t0, mask); 89 d = vec_madd(s0, s1, s2); 90 t1 = vec_perm(d, edges, align); 91 t0 = vec_perm(edges, d, align); 92 vec_st(t1, 15, dst + i); 93 vec_st(t0, 0, dst + i); 94 } 95} 96 97void ff_vector_fmul_reverse_altivec(float *dst, const float *src0, 98 const float *src1, int len) 99{ 100 int i; 101 vector float d, s0, s1, h0, l0, 102 s2, s3, zero = (vector float) vec_splat_u32(0); 103 104 src1 += len-4; 105 for(i = 0; i < len - 7; i += 8) { 106 s1 = vec_ld(0, src1 - i); // [a,b,c,d] 107 s0 = vec_ld(0, src0 + i); 108 l0 = vec_mergel(s1, s1); // [c,c,d,d] 109 s3 = vec_ld(-16, src1 - i); 110 h0 = vec_mergeh(s1, s1); // [a,a,b,b] 111 s2 = vec_ld(16, src0 + i); 112 s1 = vec_mergeh(vec_mergel(l0, h0), // [d,b,d,b] 113 vec_mergeh(l0, h0)); // [c,a,c,a] 114 // [d,c,b,a] 115 l0 = vec_mergel(s3, s3); 116 d = vec_madd(s0, s1, zero); 117 h0 = vec_mergeh(s3, s3); 118 vec_st(d, 0, dst + i); 119 s3 = vec_mergeh(vec_mergel(l0, h0), 120 vec_mergeh(l0, h0)); 121 d = vec_madd(s2, s3, zero); 122 vec_st(d, 16, dst + i); 123 } 124} 125