FFmpeg
float_dsp_vsx.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2015 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_vsx.h"
23 
24 void ff_vector_fmul_vsx(float *dst,
25  const float *src0, const float *src1,
26  int len)
27 {
28  int i;
29  vec_f d0, d1, zero = (vec_f)vec_splat_u32(0);
30  for (i = 0; i < len - 7; i += 8) {
31  d0 = vec_vsx_ld( 0, src0 + i);
32  d1 = vec_vsx_ld(16, src0 + i);
33  d0 = vec_madd(d0, vec_vsx_ld( 0, src1 + i), zero);
34  d1 = vec_madd(d1, vec_vsx_ld(16, src1 + i), zero);
35  vec_vsx_st(d0, 0, dst + i);
36  vec_vsx_st(d1, 16, dst + i);
37  }
38 }
39 
40 void ff_vector_fmul_window_vsx(float *dst, const float *src0,
41  const float *src1, const float *win,
42  int len)
43 {
44  vec_f zero, t0, t1, s0, s1, wi, wj;
45  const vec_u8 reverse = vcprm(3, 2, 1, 0);
46  int i, j;
47 
48  dst += len;
49  win += len;
50  src0 += len;
51 
52  zero = (vec_f)vec_splat_u32(0);
53 
54  for (i = -len * 4, j = len * 4 - 16; i < 0; i += 16, j -= 16) {
55  s0 = vec_vsx_ld(i, src0);
56  s1 = vec_vsx_ld(j, src1);
57  wi = vec_vsx_ld(i, win);
58  wj = vec_vsx_ld(j, win);
59 
60  s1 = vec_perm(s1, s1, reverse);
61  wj = vec_perm(wj, wj, reverse);
62 
63  t0 = vec_madd(s0, wj, zero);
64  t0 = vec_nmsub(s1, wi, t0);
65  t1 = vec_madd(s0, wi, zero);
66  t1 = vec_madd(s1, wj, t1);
67  t1 = vec_perm(t1, t1, reverse);
68 
69  vec_vsx_st(t0, i, dst);
70  vec_vsx_st(t1, j, dst);
71  }
72 }
73 
74 void ff_vector_fmul_add_vsx(float *dst, const float *src0,
75  const float *src1, const float *src2,
76  int len)
77 {
78  int i;
79  vec_f d, s0, s1, s2;
80 
81  for (i = 0; i < len - 3; i += 4) {
82  s0 = vec_vsx_ld(0, src0 + i);
83  s1 = vec_vsx_ld(0, src1 + i);
84  s2 = vec_vsx_ld(0, src2 + i);
85  d = vec_madd(s0, s1, s2);
86  vec_vsx_st(d, 0, dst + i);
87  }
88 }
89 
90 void ff_vector_fmul_reverse_vsx(float *dst, const float *src0,
91  const float *src1, int len)
92 {
93  int i;
94  vec_f d, s0, s1, h0, l0, s2, s3;
95  vec_f zero = (vec_f)vec_splat_u32(0);
96 
97  src1 += len - 4;
98  for (i = 0; i < len - 7; i += 8) {
99  s1 = vec_vsx_ld(0, src1 - i); // [a,b,c,d]
100  s0 = vec_vsx_ld(0, src0 + i);
101  l0 = vec_mergel(s1, s1); // [c,c,d,d]
102  s3 = vec_vsx_ld(-16, src1 - i);
103  h0 = vec_mergeh(s1, s1); // [a,a,b,b]
104  s2 = vec_vsx_ld(16, src0 + i);
105  s1 = vec_mergeh(vec_mergel(l0, h0), // [d,b,d,b]
106  vec_mergeh(l0, h0)); // [c,a,c,a]
107  // [d,c,b,a]
108  l0 = vec_mergel(s3, s3);
109  d = vec_madd(s0, s1, zero);
110  h0 = vec_mergeh(s3, s3);
111  vec_vsx_st(d, 0, dst + i);
112  s3 = vec_mergeh(vec_mergel(l0, h0),
113  vec_mergeh(l0, h0));
114  d = vec_madd(s2, s3, zero);
115  vec_vsx_st(d, 16, dst + i);
116  }
117 }
#define vec_f
Definition: util_altivec.h:40
static float win(SuperEqualizerContext *s, float n, int N)
static uint32_t reverse(uint32_t num, int bits)
Definition: speedhq.c:565
#define t0
Definition: regdef.h:28
void ff_vector_fmul_vsx(float *dst, const float *src0, const float *src1, int len)
Definition: float_dsp_vsx.c:24
void ff_vector_fmul_window_vsx(float *dst, const float *src0, const float *src1, const float *win, int len)
Definition: float_dsp_vsx.c:40
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
#define s2
Definition: regdef.h:39
#define s0
Definition: regdef.h:37
#define t1
Definition: regdef.h:29
#define zero
Definition: regdef.h:64
#define vec_u8
Definition: util_altivec.h:34
#define s3
Definition: regdef.h:40
void ff_vector_fmul_reverse_vsx(float *dst, const float *src0, const float *src1, int len)
Definition: float_dsp_vsx.c:90
#define src1
Definition: h264pred.c:139
#define src0
Definition: h264pred.c:138
#define s1
Definition: regdef.h:38
Contains misc utility macros and inline functions.
int len
void ff_vector_fmul_add_vsx(float *dst, const float *src0, const float *src1, const float *src2, int len)
Definition: float_dsp_vsx.c:74