FFmpeg: libavutil/ppc/float_dsp_altivec.c Source File

FFmpeg
float_dsp_altivec.c
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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  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 
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 
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 
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 }
h0
static const float h0[64]
Definition: speexdata.h:741
ff_vector_fmul_altivec
void ff_vector_fmul_altivec(float *dst, const float *src0, const float *src1, int len)
Definition: float_dsp_altivec.c:24
t0
#define t0
Definition: regdef.h:28
t1
#define t1
Definition: regdef.h:29
win
static float win(SuperEqualizerContext *s, float n, int N)
Definition: af_superequalizer.c:119
s3
#define s3
Definition: regdef.h:40
ff_vector_fmul_reverse_altivec
void ff_vector_fmul_reverse_altivec(float *dst, const float *src0, const float *src1, int len)
Definition: float_dsp_altivec.c:95
float_dsp_altivec.h
s
#define s(width, name)
Definition: cbs_vp9.c:257
s1
#define s1
Definition: regdef.h:38
ff_vector_fmul_add_altivec
void ff_vector_fmul_add_altivec(float *dst, const float *src0, const float *src1, const float *src2, int len)
Definition: float_dsp_altivec.c:73
s2
#define s2
Definition: regdef.h:39
vec_u8
#define vec_u8
Definition: util_altivec.h:34
src0
#define src0
Definition: h264pred.c:139
src1
#define src1
Definition: h264pred.c:140
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
len
int len
Definition: vorbis_enc_data.h:426
zero
#define zero
Definition: regdef.h:64
s0
#define s0
Definition: regdef.h:37
util_altivec.h
d
d
Definition: ffmpeg_filter.c:153
ff_vector_fmul_window_altivec
void ff_vector_fmul_window_altivec(float *dst, const float *src0, const float *src1, const float *win, int len)
Definition: float_dsp_altivec.c:40
vec_f
#define vec_f
Definition: util_altivec.h:40
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