2 * This file is part of Libav.
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.
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.
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
20 #include "attributes.h"
21 #include "float_dsp.h"
23 static void vector_fmul_c(float *dst, const float *src0, const float *src1,
27 for (i = 0; i < len; i++)
28 dst[i] = src0[i] * src1[i];
31 static void vector_fmac_scalar_c(float *dst, const float *src, float mul,
35 for (i = 0; i < len; i++)
36 dst[i] += src[i] * mul;
39 static void vector_fmul_scalar_c(float *dst, const float *src, float mul,
43 for (i = 0; i < len; i++)
44 dst[i] = src[i] * mul;
47 static void vector_dmul_scalar_c(double *dst, const double *src, double mul,
51 for (i = 0; i < len; i++)
52 dst[i] = src[i] * mul;
55 static void vector_fmul_window_c(float *dst, const float *src0,
56 const float *src1, const float *win, int len)
64 for (i = -len, j = len - 1; i < 0; i++, j--) {
69 dst[i] = s0 * wj - s1 * wi;
70 dst[j] = s0 * wi + s1 * wj;
74 static void vector_fmul_add_c(float *dst, const float *src0, const float *src1,
75 const float *src2, int len){
78 for (i = 0; i < len; i++)
79 dst[i] = src0[i] * src1[i] + src2[i];
82 static void vector_fmul_reverse_c(float *dst, const float *src0,
83 const float *src1, int len)
88 for (i = 0; i < len; i++)
89 dst[i] = src0[i] * src1[-i];
92 static void butterflies_float_c(float *restrict v1, float *restrict v2,
97 for (i = 0; i < len; i++) {
98 float t = v1[i] - v2[i];
104 float avpriv_scalarproduct_float_c(const float *v1, const float *v2, int len)
109 for (i = 0; i < len; i++)
115 av_cold void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int bit_exact)
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;
128 ff_float_dsp_init_arm(fdsp);
130 ff_float_dsp_init_ppc(fdsp, bit_exact);
132 ff_float_dsp_init_x86(fdsp);