/* * Copyright 2005 Balatoni Denes * Copyright 2006 Loren Merritt * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "config.h"#include "attributes.h"#include "float_dsp.h"#include "mem.h" static void vector_fmul_c(float *dst, const float *src0, const float *src1,                          int len){    int i;    for (i = 0; i < len; i++)        dst[i] = src0[i] * src1[i];} static void vector_dmul_c(double *dst, const double *src0, const double *src1,                          int len){    int i;    for (i = 0; i < len; i++)        dst[i] = src0[i] * src1[i];} static void vector_fmac_scalar_c(float *dst, const float *src, float mul,                                 int len){    int i;    for (i = 0; i < len; i++)        dst[i] += src[i] * mul;} static void vector_dmac_scalar_c(double *dst, const double *src, double mul,                                 int len){    int i;    for (i = 0; i < len; i++)        dst[i] += src[i] * mul;} static void vector_fmul_scalar_c(float *dst, const float *src, float mul,                                 int len){    int i;    for (i = 0; i < len; i++)        dst[i] = src[i] * mul;} static void vector_dmul_scalar_c(double *dst, const double *src, double mul,                                 int len){    int i;    for (i = 0; i < len; i++)        dst[i] = src[i] * mul;} static void vector_fmul_window_c(float *dst, const float *src0,                                 const float *src1, const float *win, int len){    int i, j;     dst  += len;    win  += len;    src0 += len;     for (i = -len, j = len - 1; i < 0; i++, j--) {        float s0 = src0[i];        float s1 = src1[j];        float wi = win[i];        float wj = win[j];        dst[i] = s0 * wj - s1 * wi;        dst[j] = s0 * wi + s1 * wj;    }} static void vector_fmul_add_c(float *dst, const float *src0, const float *src1,                              const float *src2, int len){    int i;     for (i = 0; i < len; i++)        dst[i] = src0[i] * src1[i] + src2[i];} static void vector_fmul_reverse_c(float *dst, const float *src0,                                  const float *src1, int len){    int i;     src1 += len-1;    for (i = 0; i < len; i++)        dst[i] = src0[i] * src1[-i];} static void butterflies_float_c(float *restrict v1, float *restrict v2,                                int len){    int i;     for (i = 0; i < len; i++) {        float t = v1[i] - v2[i];        v1[i] += v2[i];        v2[i] = t;    }} float avpriv_scalarproduct_float_c(const float *v1, const float *v2, int len){    float p = 0.0;    int i;     for (i = 0; i < len; i++)        p += v1[i] * v2[i];     return p;} double ff_scalarproduct_double_c(const double *v1, const double *v2,                                 size_t len){    double p = 0.0;     for (size_t i = 0; i < len; i++)        p += v1[i] * v2[i];     return p;} av_cold AVFloatDSPContext *avpriv_float_dsp_alloc(int bit_exact){    AVFloatDSPContext *fdsp = av_mallocz(sizeof(AVFloatDSPContext));    if (!fdsp)        return NULL;     fdsp->vector_fmul = vector_fmul_c;    fdsp->vector_dmul = vector_dmul_c;    fdsp->vector_fmac_scalar = vector_fmac_scalar_c;    fdsp->vector_fmul_scalar = vector_fmul_scalar_c;    fdsp->vector_dmac_scalar = vector_dmac_scalar_c;    fdsp->vector_dmul_scalar = vector_dmul_scalar_c;    fdsp->vector_fmul_window = vector_fmul_window_c;    fdsp->vector_fmul_add = vector_fmul_add_c;    fdsp->vector_fmul_reverse = vector_fmul_reverse_c;    fdsp->butterflies_float = butterflies_float_c;    fdsp->scalarproduct_float = avpriv_scalarproduct_float_c;    fdsp->scalarproduct_double = ff_scalarproduct_double_c; #if ARCH_AARCH64    ff_float_dsp_init_aarch64(fdsp);#elif ARCH_ARM    ff_float_dsp_init_arm(fdsp);#elif ARCH_PPC    ff_float_dsp_init_ppc(fdsp, bit_exact);#elif ARCH_RISCV    ff_float_dsp_init_riscv(fdsp);#elif ARCH_X86    ff_float_dsp_init_x86(fdsp);#elif ARCH_MIPS    ff_float_dsp_init_mips(fdsp);#endif    return fdsp;}