1 /*
2 * Copyright (c) 2007 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 /**
22 * @file
23 * miscellaneous audio operations
24 */
25
26 #include "config.h"
27
28 #include "libavutil/attributes.h"
29 #include "libavutil/cpu.h"
30 #include "libavutil/ppc/cpu.h"
31 #include "libavutil/ppc/util_altivec.h"
32
33 #include "libavcodec/audiodsp.h"
34
35 #if HAVE_ALTIVEC
36
scalarproduct_int16_altivec(const int16_t * v1,const int16_t * v2,int order)37 static int32_t scalarproduct_int16_altivec(const int16_t *v1, const int16_t *v2,
38 int order)
39 {
40 int i;
41 LOAD_ZERO;
42 register vec_s16 vec1;
43 register vec_s32 res = vec_splat_s32(0), t;
44 int32_t ires;
45
46 for (i = 0; i < order; i += 8) {
47 vec1 = vec_unaligned_load(v1);
48 t = vec_msum(vec1, vec_ld(0, v2), zero_s32v);
49 res = vec_sums(t, res);
50 v1 += 8;
51 v2 += 8;
52 }
53 res = vec_splat(res, 3);
54 vec_ste(res, 0, &ires);
55
56 return ires;
57 }
58
59 #endif /* HAVE_ALTIVEC */
60
61 #if HAVE_VSX
62
scalarproduct_int16_vsx(const int16_t * v1,const int16_t * v2,int order)63 static int32_t scalarproduct_int16_vsx(const int16_t *v1, const int16_t *v2, int order)
64 {
65 int i;
66 LOAD_ZERO;
67 register vec_s16 vec1;
68 register vec_s32 res = vec_splat_s32(0), t;
69 int32_t ires;
70
71 for (i = 0; i < order; i += 8) {
72 vec1 = vec_vsx_ld(0, v1);
73 t = vec_msum(vec1, vec_ld(0, v2), zero_s32v);
74 res = vec_sums(t, res);
75 v1 += 8;
76 v2 += 8;
77 }
78 res = vec_splat(res, 3);
79 vec_ste(res, 0, &ires);
80
81 return ires;
82 }
83
84 #endif /* HAVE_VSX */
85
ff_audiodsp_init_ppc(AudioDSPContext * c)86 av_cold void ff_audiodsp_init_ppc(AudioDSPContext *c)
87 {
88 #if HAVE_ALTIVEC
89 if (!PPC_ALTIVEC(av_get_cpu_flags()))
90 return;
91
92 c->scalarproduct_int16 = scalarproduct_int16_altivec;
93 #endif /* HAVE_ALTIVEC */
94
95 #if HAVE_VSX
96 if (!PPC_VSX(av_get_cpu_flags()))
97 return;
98
99 c->scalarproduct_int16 = scalarproduct_int16_vsx;
100 #endif /* HAVE_VSX */
101 }
102