2 * Copyright 2005 Balatoni Denes
3 * Copyright 2006 Loren Merritt
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "libavutil/attributes.h"
24 #include "float_dsp.h"
26 static void vector_fmul_c(float *dst, const float *src0, const float *src1,
30 for (i = 0; i < len; i++)
31 dst[i] = src0[i] * src1[i];
34 static void vector_fmac_scalar_c(float *dst, const float *src, float mul,
38 for (i = 0; i < len; i++)
39 dst[i] += src[i] * mul;
42 static void vector_fmul_scalar_c(float *dst, const float *src, float mul,
46 for (i = 0; i < len; i++)
47 dst[i] = src[i] * mul;
50 static void vector_dmul_scalar_c(double *dst, const double *src, double mul,
54 for (i = 0; i < len; i++)
55 dst[i] = src[i] * mul;
58 static void vector_fmul_window_c(float *dst, const float *src0,
59 const float *src1, const float *win, int len)
67 for (i = -len, j = len - 1; i < 0; i++, j--) {
72 dst[i] = s0 * wj - s1 * wi;
73 dst[j] = s0 * wi + s1 * wj;
77 static void vector_fmul_add_c(float *dst, const float *src0, const float *src1,
78 const float *src2, int len){
81 for (i = 0; i < len; i++)
82 dst[i] = src0[i] * src1[i] + src2[i];
85 static void vector_fmul_reverse_c(float *dst, const float *src0,
86 const float *src1, int len)
91 for (i = 0; i < len; i++)
92 dst[i] = src0[i] * src1[-i];
95 static void butterflies_float_c(float *av_restrict v1, float *av_restrict v2,
100 for (i = 0; i < len; i++) {
101 float t = v1[i] - v2[i];
107 float avpriv_scalarproduct_float_c(const float *v1, const float *v2, int len)
112 for (i = 0; i < len; i++)
118 av_cold void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int bit_exact)
120 fdsp->vector_fmul = vector_fmul_c;
121 fdsp->vector_fmac_scalar = vector_fmac_scalar_c;
122 fdsp->vector_fmul_scalar = vector_fmul_scalar_c;
123 fdsp->vector_dmul_scalar = vector_dmul_scalar_c;
124 fdsp->vector_fmul_window = vector_fmul_window_c;
125 fdsp->vector_fmul_add = vector_fmul_add_c;
126 fdsp->vector_fmul_reverse = vector_fmul_reverse_c;
127 fdsp->butterflies_float = butterflies_float_c;
128 fdsp->scalarproduct_float = avpriv_scalarproduct_float_c;
131 ff_float_dsp_init_arm(fdsp);
133 ff_float_dsp_init_ppc(fdsp, bit_exact);
135 ff_float_dsp_init_x86(fdsp);
137 ff_float_dsp_init_mips(fdsp);