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
ff_vector_fmul_altivec(float * dst,const float * src0,const float * src1,int len)24 void ff_vector_fmul_altivec(float *dst, const float *src0, const float *src1,
25 int len)
26 {
27 int i;
28 vec_f d0, d1, s, zero = (vec_f)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
ff_vector_fmul_window_altivec(float * dst,const float * src0,const float * src1,const float * win,int len)40 void ff_vector_fmul_window_altivec(float *dst, const float *src0,
41 const float *src1, const float *win, int len)
42 {
43 vec_f zero, t0, t1, s0, s1, wi, wj;
44 const vec_u8 reverse = vcprm(3, 2, 1, 0);
45 int i, j;
46
47 dst += len;
48 win += len;
49 src0 += len;
50
51 zero = (vec_f)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
ff_vector_fmul_add_altivec(float * dst,const float * src0,const float * src1,const float * src2,int len)73 void 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 vec_f d, ss0, ss1, ss2, t0, t1, edges;
79
80 for (i = 0; i < len - 3; i += 4) {
81 t0 = vec_ld(0, dst + i);
82 t1 = vec_ld(15, dst + i);
83 ss0 = vec_ld(0, src0 + i);
84 ss1 = vec_ld(0, src1 + i);
85 ss2 = vec_ld(0, src2 + i);
86 edges = vec_perm(t1, t0, vcprm(0, 1, 2, 3));
87 d = vec_madd(ss0, ss1, ss2);
88 t1 = vec_perm(d, edges, vcprm(s0,s1,s2,s3));
89 t0 = vec_perm(edges, d, vcprm(s0,s1,s2,s3));
90 vec_st(t1, 15, dst + i);
91 vec_st(t0, 0, dst + i);
92 }
93 }
94
ff_vector_fmul_reverse_altivec(float * dst,const float * src0,const float * src1,int len)95 void ff_vector_fmul_reverse_altivec(float *dst, const float *src0,
96 const float *src1, int len)
97 {
98 int i;
99 vec_f d, s0, s1, h0, l0, s2, s3;
100 vec_f zero = (vec_f)vec_splat_u32(0);
101
102 src1 += len-4;
103 for(i = 0; i < len - 7; i += 8) {
104 s1 = vec_ld(0, src1 - i); // [a,b,c,d]
105 s0 = vec_ld(0, src0 + i);
106 l0 = vec_mergel(s1, s1); // [c,c,d,d]
107 s3 = vec_ld(-16, src1 - i);
108 h0 = vec_mergeh(s1, s1); // [a,a,b,b]
109 s2 = vec_ld(16, src0 + i);
110 s1 = vec_mergeh(vec_mergel(l0, h0), // [d,b,d,b]
111 vec_mergeh(l0, h0)); // [c,a,c,a]
112 // [d,c,b,a]
113 l0 = vec_mergel(s3, s3);
114 d = vec_madd(s0, s1, zero);
115 h0 = vec_mergeh(s3, s3);
116 vec_st(d, 0, dst + i);
117 s3 = vec_mergeh(vec_mergel(l0, h0),
118 vec_mergeh(l0, h0));
119 d = vec_madd(s2, s3, zero);
120 vec_st(d, 16, dst + i);
121 }
122 }
123