2 * Copyright (c) 2006 Luca Barbato <lu_zero@gentoo.org>
4 * This file is part of Libav.
6 * Libav 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.
11 * Libav 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.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "util_altivec.h"
22 #include "float_dsp_altivec.h"
24 void ff_vector_fmul_altivec(float *dst, const float *src0, const float *src1,
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);
40 void ff_vector_fmul_window_altivec(float *dst, const float *src0,
41 const float *src1, const float *win, int len)
43 vector float zero, t0, t1, s0, s1, wi, wj;
44 const vector unsigned char reverse = vcprm(3, 2, 1, 0);
51 zero = (vector float)vec_splat_u32(0);
53 for (i = -len * 4, j = len * 4 - 16; i < 0; i += 16, j -= 16) {
59 s1 = vec_perm(s1, s1, reverse);
60 wj = vec_perm(wj, wj, reverse);
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);