yading@11: /*
yading@11:  * Copyright 2005 Balatoni Denes
yading@11:  * Copyright 2006 Loren Merritt
yading@11:  *
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: #include "config.h"
yading@11: 
yading@11: #include "float_dsp.h"
yading@11: 
yading@11: static void vector_fmul_c(float *dst, const float *src0, const float *src1,
yading@11:                           int len)
yading@11: {
yading@11:     int i;
yading@11:     for (i = 0; i < len; i++)
yading@11:         dst[i] = src0[i] * src1[i];
yading@11: }
yading@11: 
yading@11: static void vector_fmac_scalar_c(float *dst, const float *src, float mul,
yading@11:                                  int len)
yading@11: {
yading@11:     int i;
yading@11:     for (i = 0; i < len; i++)
yading@11:         dst[i] += src[i] * mul;
yading@11: }
yading@11: 
yading@11: static void vector_fmul_scalar_c(float *dst, const float *src, float mul,
yading@11:                                  int len)
yading@11: {
yading@11:     int i;
yading@11:     for (i = 0; i < len; i++)
yading@11:         dst[i] = src[i] * mul;
yading@11: }
yading@11: 
yading@11: static void vector_dmul_scalar_c(double *dst, const double *src, double mul,
yading@11:                                  int len)
yading@11: {
yading@11:     int i;
yading@11:     for (i = 0; i < len; i++)
yading@11:         dst[i] = src[i] * mul;
yading@11: }
yading@11: 
yading@11: static void vector_fmul_window_c(float *dst, const float *src0,
yading@11:                                  const float *src1, const float *win, int len)
yading@11: {
yading@11:     int i, j;
yading@11: 
yading@11:     dst  += len;
yading@11:     win  += len;
yading@11:     src0 += len;
yading@11: 
yading@11:     for (i = -len, j = len - 1; i < 0; i++, j--) {
yading@11:         float s0 = src0[i];
yading@11:         float s1 = src1[j];
yading@11:         float wi = win[i];
yading@11:         float wj = win[j];
yading@11:         dst[i] = s0 * wj - s1 * wi;
yading@11:         dst[j] = s0 * wi + s1 * wj;
yading@11:     }
yading@11: }
yading@11: 
yading@11: static void vector_fmul_add_c(float *dst, const float *src0, const float *src1,
yading@11:                               const float *src2, int len){
yading@11:     int i;
yading@11: 
yading@11:     for (i = 0; i < len; i++)
yading@11:         dst[i] = src0[i] * src1[i] + src2[i];
yading@11: }
yading@11: 
yading@11: static void vector_fmul_reverse_c(float *dst, const float *src0,
yading@11:                                   const float *src1, int len)
yading@11: {
yading@11:     int i;
yading@11: 
yading@11:     src1 += len-1;
yading@11:     for (i = 0; i < len; i++)
yading@11:         dst[i] = src0[i] * src1[-i];
yading@11: }
yading@11: 
yading@11: static void butterflies_float_c(float *av_restrict v1, float *av_restrict v2,
yading@11:                                 int len)
yading@11: {
yading@11:     int i;
yading@11: 
yading@11:     for (i = 0; i < len; i++) {
yading@11:         float t = v1[i] - v2[i];
yading@11:         v1[i] += v2[i];
yading@11:         v2[i] = t;
yading@11:     }
yading@11: }
yading@11: 
yading@11: float avpriv_scalarproduct_float_c(const float *v1, const float *v2, int len)
yading@11: {
yading@11:     float p = 0.0;
yading@11:     int i;
yading@11: 
yading@11:     for (i = 0; i < len; i++)
yading@11:         p += v1[i] * v2[i];
yading@11: 
yading@11:     return p;
yading@11: }
yading@11: 
yading@11: void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int bit_exact)
yading@11: {
yading@11:     fdsp->vector_fmul = vector_fmul_c;
yading@11:     fdsp->vector_fmac_scalar = vector_fmac_scalar_c;
yading@11:     fdsp->vector_fmul_scalar = vector_fmul_scalar_c;
yading@11:     fdsp->vector_dmul_scalar = vector_dmul_scalar_c;
yading@11:     fdsp->vector_fmul_window = vector_fmul_window_c;
yading@11:     fdsp->vector_fmul_add = vector_fmul_add_c;
yading@11:     fdsp->vector_fmul_reverse = vector_fmul_reverse_c;
yading@11:     fdsp->butterflies_float = butterflies_float_c;
yading@11:     fdsp->scalarproduct_float = avpriv_scalarproduct_float_c;
yading@11: 
yading@11: #if ARCH_ARM
yading@11:     ff_float_dsp_init_arm(fdsp);
yading@11: #elif ARCH_PPC
yading@11:     ff_float_dsp_init_ppc(fdsp, bit_exact);
yading@11: #elif ARCH_X86
yading@11:     ff_float_dsp_init_x86(fdsp);
yading@11: #elif ARCH_MIPS
yading@11:     ff_float_dsp_init_mips(fdsp);
yading@11: #endif
yading@11: }