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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 | ||
24 | void 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 | ||
40 | void 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 | ||
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 | vector float 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 | ||
95 | void ff_vector_fmul_reverse_altivec(float *dst, const float *src0, | |
96 | const float *src1, int len) | |
97 | { | |
98 | int i; | |
99 | vector float d, s0, s1, h0, l0, | |
100 | s2, s3, zero = (vector float) 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 | } |