Drop pointless directory name prefixes from #includes in the current dir
[libav.git] / libavutil / float_dsp.c
1 /*
2 * This file is part of Libav.
3 *
4 * Libav is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * Libav is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with Libav; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include "config.h"
20 #include "attributes.h"
21 #include "float_dsp.h"
22
23 static void vector_fmul_c(float *dst, const float *src0, const float *src1,
24 int len)
25 {
26 int i;
27 for (i = 0; i < len; i++)
28 dst[i] = src0[i] * src1[i];
29 }
30
31 static void vector_fmac_scalar_c(float *dst, const float *src, float mul,
32 int len)
33 {
34 int i;
35 for (i = 0; i < len; i++)
36 dst[i] += src[i] * mul;
37 }
38
39 static void vector_fmul_scalar_c(float *dst, const float *src, float mul,
40 int len)
41 {
42 int i;
43 for (i = 0; i < len; i++)
44 dst[i] = src[i] * mul;
45 }
46
47 static void vector_dmul_scalar_c(double *dst, const double *src, double mul,
48 int len)
49 {
50 int i;
51 for (i = 0; i < len; i++)
52 dst[i] = src[i] * mul;
53 }
54
55 static void vector_fmul_window_c(float *dst, const float *src0,
56 const float *src1, const float *win, int len)
57 {
58 int i, j;
59
60 dst += len;
61 win += len;
62 src0 += len;
63
64 for (i = -len, j = len - 1; i < 0; i++, j--) {
65 float s0 = src0[i];
66 float s1 = src1[j];
67 float wi = win[i];
68 float wj = win[j];
69 dst[i] = s0 * wj - s1 * wi;
70 dst[j] = s0 * wi + s1 * wj;
71 }
72 }
73
74 static void vector_fmul_add_c(float *dst, const float *src0, const float *src1,
75 const float *src2, int len){
76 int i;
77
78 for (i = 0; i < len; i++)
79 dst[i] = src0[i] * src1[i] + src2[i];
80 }
81
82 static void vector_fmul_reverse_c(float *dst, const float *src0,
83 const float *src1, int len)
84 {
85 int i;
86
87 src1 += len-1;
88 for (i = 0; i < len; i++)
89 dst[i] = src0[i] * src1[-i];
90 }
91
92 static void butterflies_float_c(float *restrict v1, float *restrict v2,
93 int len)
94 {
95 int i;
96
97 for (i = 0; i < len; i++) {
98 float t = v1[i] - v2[i];
99 v1[i] += v2[i];
100 v2[i] = t;
101 }
102 }
103
104 float avpriv_scalarproduct_float_c(const float *v1, const float *v2, int len)
105 {
106 float p = 0.0;
107 int i;
108
109 for (i = 0; i < len; i++)
110 p += v1[i] * v2[i];
111
112 return p;
113 }
114
115 av_cold void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int bit_exact)
116 {
117 fdsp->vector_fmul = vector_fmul_c;
118 fdsp->vector_fmac_scalar = vector_fmac_scalar_c;
119 fdsp->vector_fmul_scalar = vector_fmul_scalar_c;
120 fdsp->vector_dmul_scalar = vector_dmul_scalar_c;
121 fdsp->vector_fmul_window = vector_fmul_window_c;
122 fdsp->vector_fmul_add = vector_fmul_add_c;
123 fdsp->vector_fmul_reverse = vector_fmul_reverse_c;
124 fdsp->butterflies_float = butterflies_float_c;
125 fdsp->scalarproduct_float = avpriv_scalarproduct_float_c;
126
127 #if ARCH_ARM
128 ff_float_dsp_init_arm(fdsp);
129 #elif ARCH_PPC
130 ff_float_dsp_init_ppc(fdsp, bit_exact);
131 #elif ARCH_X86
132 ff_float_dsp_init_x86(fdsp);
133 #endif
134 }