mirror of
https://git.ffmpeg.org/ffmpeg.git
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460 lines
13 KiB
C
460 lines
13 KiB
C
/*
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* Copyright 2005 Balatoni Denes
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* Copyright 2006 Loren Merritt
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include "attributes.h"
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#include "float_dsp.h"
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#include "mem.h"
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static void vector_fmul_c(float *dst, const float *src0, const float *src1,
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int len)
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{
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int i;
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for (i = 0; i < len; i++)
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dst[i] = src0[i] * src1[i];
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}
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static void vector_fmac_scalar_c(float *dst, const float *src, float mul,
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int len)
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{
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int i;
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for (i = 0; i < len; i++)
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dst[i] += src[i] * mul;
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}
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static void vector_fmul_scalar_c(float *dst, const float *src, float mul,
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int len)
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{
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int i;
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for (i = 0; i < len; i++)
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dst[i] = src[i] * mul;
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}
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static void vector_dmul_scalar_c(double *dst, const double *src, double mul,
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int len)
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{
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int i;
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for (i = 0; i < len; i++)
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dst[i] = src[i] * mul;
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}
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static void vector_fmul_window_c(float *dst, const float *src0,
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const float *src1, const float *win, int len)
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{
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int i, j;
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dst += len;
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win += len;
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src0 += len;
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for (i = -len, j = len - 1; i < 0; i++, j--) {
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float s0 = src0[i];
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float s1 = src1[j];
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float wi = win[i];
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float wj = win[j];
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dst[i] = s0 * wj - s1 * wi;
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dst[j] = s0 * wi + s1 * wj;
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}
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}
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static void vector_fmul_add_c(float *dst, const float *src0, const float *src1,
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const float *src2, int len){
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int i;
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for (i = 0; i < len; i++)
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dst[i] = src0[i] * src1[i] + src2[i];
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}
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static void vector_fmul_reverse_c(float *dst, const float *src0,
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const float *src1, int len)
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{
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int i;
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src1 += len-1;
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for (i = 0; i < len; i++)
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dst[i] = src0[i] * src1[-i];
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}
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static void butterflies_float_c(float *av_restrict v1, float *av_restrict v2,
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int len)
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{
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int i;
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for (i = 0; i < len; i++) {
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float t = v1[i] - v2[i];
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v1[i] += v2[i];
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v2[i] = t;
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}
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}
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float avpriv_scalarproduct_float_c(const float *v1, const float *v2, int len)
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{
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float p = 0.0;
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int i;
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for (i = 0; i < len; i++)
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p += v1[i] * v2[i];
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return p;
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}
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av_cold void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int bit_exact)
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{
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fdsp->vector_fmul = vector_fmul_c;
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fdsp->vector_fmac_scalar = vector_fmac_scalar_c;
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fdsp->vector_fmul_scalar = vector_fmul_scalar_c;
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fdsp->vector_dmul_scalar = vector_dmul_scalar_c;
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fdsp->vector_fmul_window = vector_fmul_window_c;
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fdsp->vector_fmul_add = vector_fmul_add_c;
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fdsp->vector_fmul_reverse = vector_fmul_reverse_c;
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fdsp->butterflies_float = butterflies_float_c;
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fdsp->scalarproduct_float = avpriv_scalarproduct_float_c;
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if (ARCH_AARCH64)
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ff_float_dsp_init_aarch64(fdsp);
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if (ARCH_ARM)
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ff_float_dsp_init_arm(fdsp);
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if (ARCH_PPC)
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ff_float_dsp_init_ppc(fdsp, bit_exact);
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if (ARCH_X86)
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ff_float_dsp_init_x86(fdsp);
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if (ARCH_MIPS)
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ff_float_dsp_init_mips(fdsp);
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}
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av_cold AVFloatDSPContext *avpriv_float_dsp_alloc(int bit_exact)
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{
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AVFloatDSPContext *ret = av_mallocz(sizeof(AVFloatDSPContext));
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if (ret)
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avpriv_float_dsp_init(ret, bit_exact);
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return ret;
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}
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#ifdef TEST
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#include <float.h>
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#include <math.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#if HAVE_UNISTD_H
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#include <unistd.h> /* for getopt */
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#endif
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#if !HAVE_GETOPT
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#include "compat/getopt.c"
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#endif
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#include "common.h"
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#include "cpu.h"
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#include "internal.h"
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#include "lfg.h"
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#include "log.h"
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#include "random_seed.h"
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#define LEN 240
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static void fill_float_array(AVLFG *lfg, float *a, int len)
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{
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int i;
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double bmg[2], stddev = 10.0, mean = 0.0;
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for (i = 0; i < len; i += 2) {
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av_bmg_get(lfg, bmg);
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a[i] = bmg[0] * stddev + mean;
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a[i + 1] = bmg[1] * stddev + mean;
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}
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}
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static int compare_floats(const float *a, const float *b, int len,
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float max_diff)
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{
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int i;
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for (i = 0; i < len; i++) {
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if (fabsf(a[i] - b[i]) > max_diff) {
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av_log(NULL, AV_LOG_ERROR, "%d: %- .12f - %- .12f = % .12g\n",
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i, a[i], b[i], a[i] - b[i]);
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return -1;
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}
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}
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return 0;
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}
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static void fill_double_array(AVLFG *lfg, double *a, int len)
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{
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int i;
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double bmg[2], stddev = 10.0, mean = 0.0;
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for (i = 0; i < len; i += 2) {
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av_bmg_get(lfg, bmg);
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a[i] = bmg[0] * stddev + mean;
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a[i + 1] = bmg[1] * stddev + mean;
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}
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}
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static int compare_doubles(const double *a, const double *b, int len,
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double max_diff)
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{
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int i;
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for (i = 0; i < len; i++) {
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if (fabs(a[i] - b[i]) > max_diff) {
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av_log(NULL, AV_LOG_ERROR, "%d: %- .12f - %- .12f = % .12g\n",
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i, a[i], b[i], a[i] - b[i]);
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return -1;
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}
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}
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return 0;
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}
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static int test_vector_fmul(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,
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const float *v1, const float *v2)
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{
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LOCAL_ALIGNED(32, float, cdst, [LEN]);
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LOCAL_ALIGNED(32, float, odst, [LEN]);
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int ret;
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cdsp->vector_fmul(cdst, v1, v2, LEN);
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fdsp->vector_fmul(odst, v1, v2, LEN);
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if (ret = compare_floats(cdst, odst, LEN, FLT_EPSILON))
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av_log(NULL, AV_LOG_ERROR, "vector_fmul failed\n");
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return ret;
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}
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#define ARBITRARY_FMAC_SCALAR_CONST 0.005
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static int test_vector_fmac_scalar(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,
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const float *v1, const float *src0, float scale)
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{
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LOCAL_ALIGNED(32, float, cdst, [LEN]);
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LOCAL_ALIGNED(32, float, odst, [LEN]);
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int ret;
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memcpy(cdst, v1, LEN * sizeof(*v1));
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memcpy(odst, v1, LEN * sizeof(*v1));
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cdsp->vector_fmac_scalar(cdst, src0, scale, LEN);
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fdsp->vector_fmac_scalar(odst, src0, scale, LEN);
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if (ret = compare_floats(cdst, odst, LEN, ARBITRARY_FMAC_SCALAR_CONST))
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av_log(NULL, AV_LOG_ERROR, "vector_fmac_scalar failed\n");
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return ret;
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}
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static int test_vector_fmul_scalar(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,
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const float *v1, float scale)
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{
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LOCAL_ALIGNED(32, float, cdst, [LEN]);
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LOCAL_ALIGNED(32, float, odst, [LEN]);
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int ret;
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cdsp->vector_fmul_scalar(cdst, v1, scale, LEN);
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fdsp->vector_fmul_scalar(odst, v1, scale, LEN);
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if (ret = compare_floats(cdst, odst, LEN, FLT_EPSILON))
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av_log(NULL, AV_LOG_ERROR, "vector_fmul_scalar failed\n");
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return ret;
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}
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static int test_vector_dmul_scalar(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,
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const double *v1, double scale)
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{
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LOCAL_ALIGNED(32, double, cdst, [LEN]);
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LOCAL_ALIGNED(32, double, odst, [LEN]);
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int ret;
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cdsp->vector_dmul_scalar(cdst, v1, scale, LEN);
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fdsp->vector_dmul_scalar(odst, v1, scale, LEN);
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if (ret = compare_doubles(cdst, odst, LEN, DBL_EPSILON))
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av_log(NULL, AV_LOG_ERROR, "vector_dmul_scalar failed\n");
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return ret;
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}
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#define ARBITRARY_FMUL_WINDOW_CONST 0.008
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static int test_vector_fmul_window(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,
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const float *v1, const float *v2, const float *v3)
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{
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LOCAL_ALIGNED(32, float, cdst, [LEN]);
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LOCAL_ALIGNED(32, float, odst, [LEN]);
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int ret;
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cdsp->vector_fmul_window(cdst, v1, v2, v3, LEN / 2);
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fdsp->vector_fmul_window(odst, v1, v2, v3, LEN / 2);
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if (ret = compare_floats(cdst, odst, LEN, ARBITRARY_FMUL_WINDOW_CONST))
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av_log(NULL, AV_LOG_ERROR, "vector_fmul_window failed\n");
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return ret;
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}
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#define ARBITRARY_FMUL_ADD_CONST 0.005
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static int test_vector_fmul_add(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,
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const float *v1, const float *v2, const float *v3)
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{
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LOCAL_ALIGNED(32, float, cdst, [LEN]);
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LOCAL_ALIGNED(32, float, odst, [LEN]);
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int ret;
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cdsp->vector_fmul_add(cdst, v1, v2, v3, LEN);
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fdsp->vector_fmul_add(odst, v1, v2, v3, LEN);
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if (ret = compare_floats(cdst, odst, LEN, ARBITRARY_FMUL_ADD_CONST))
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av_log(NULL, AV_LOG_ERROR, "vector_fmul_add failed\n");
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return ret;
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}
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static int test_vector_fmul_reverse(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,
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const float *v1, const float *v2)
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{
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LOCAL_ALIGNED(32, float, cdst, [LEN]);
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LOCAL_ALIGNED(32, float, odst, [LEN]);
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int ret;
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cdsp->vector_fmul_reverse(cdst, v1, v2, LEN);
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fdsp->vector_fmul_reverse(odst, v1, v2, LEN);
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if (ret = compare_floats(cdst, odst, LEN, FLT_EPSILON))
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av_log(NULL, AV_LOG_ERROR, "vector_fmul_reverse failed\n");
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return ret;
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}
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static int test_butterflies_float(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,
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const float *v1, const float *v2)
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{
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LOCAL_ALIGNED(32, float, cv1, [LEN]);
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LOCAL_ALIGNED(32, float, cv2, [LEN]);
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LOCAL_ALIGNED(32, float, ov1, [LEN]);
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LOCAL_ALIGNED(32, float, ov2, [LEN]);
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int ret;
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memcpy(cv1, v1, LEN * sizeof(*v1));
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memcpy(cv2, v2, LEN * sizeof(*v2));
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memcpy(ov1, v1, LEN * sizeof(*v1));
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memcpy(ov2, v2, LEN * sizeof(*v2));
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cdsp->butterflies_float(cv1, cv2, LEN);
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fdsp->butterflies_float(ov1, ov2, LEN);
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if ((ret = compare_floats(cv1, ov1, LEN, FLT_EPSILON)) ||
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(ret = compare_floats(cv2, ov2, LEN, FLT_EPSILON)))
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av_log(NULL, AV_LOG_ERROR, "butterflies_float failed\n");
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return ret;
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}
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#define ARBITRARY_SCALARPRODUCT_CONST 0.2
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static int test_scalarproduct_float(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,
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const float *v1, const float *v2)
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{
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float cprod, oprod;
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int ret;
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cprod = cdsp->scalarproduct_float(v1, v2, LEN);
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oprod = fdsp->scalarproduct_float(v1, v2, LEN);
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if (ret = compare_floats(&cprod, &oprod, 1, ARBITRARY_SCALARPRODUCT_CONST))
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av_log(NULL, AV_LOG_ERROR, "scalarproduct_float failed\n");
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return ret;
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}
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int main(int argc, char **argv)
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{
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int ret = 0, seeded = 0;
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uint32_t seed;
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AVFloatDSPContext fdsp, cdsp;
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AVLFG lfg;
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LOCAL_ALIGNED(32, float, src0, [LEN]);
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LOCAL_ALIGNED(32, float, src1, [LEN]);
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LOCAL_ALIGNED(32, float, src2, [LEN]);
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LOCAL_ALIGNED(32, double, dbl_src0, [LEN]);
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LOCAL_ALIGNED(32, double, dbl_src1, [LEN]);
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for (;;) {
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int arg = getopt(argc, argv, "s:c:");
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if (arg == -1)
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break;
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switch (arg) {
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case 's':
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seed = strtoul(optarg, NULL, 10);
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seeded = 1;
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break;
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case 'c':
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{
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int cpuflags = av_get_cpu_flags();
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if (av_parse_cpu_caps(&cpuflags, optarg) < 0)
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return 1;
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av_force_cpu_flags(cpuflags);
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break;
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}
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}
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}
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if (!seeded)
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seed = av_get_random_seed();
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av_log(NULL, AV_LOG_INFO, "float_dsp-test: %s %u\n", seeded ? "seed" : "random seed", seed);
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av_lfg_init(&lfg, seed);
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fill_float_array(&lfg, src0, LEN);
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fill_float_array(&lfg, src1, LEN);
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fill_float_array(&lfg, src2, LEN);
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fill_double_array(&lfg, dbl_src0, LEN);
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fill_double_array(&lfg, dbl_src1, LEN);
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avpriv_float_dsp_init(&fdsp, 1);
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av_force_cpu_flags(0);
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avpriv_float_dsp_init(&cdsp, 1);
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if (test_vector_fmul(&fdsp, &cdsp, src0, src1))
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ret -= 1 << 0;
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if (test_vector_fmac_scalar(&fdsp, &cdsp, src2, src0, src1[0]))
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ret -= 1 << 1;
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if (test_vector_fmul_scalar(&fdsp, &cdsp, src0, src1[0]))
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ret -= 1 << 2;
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if (test_vector_fmul_window(&fdsp, &cdsp, src0, src1, src2))
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ret -= 1 << 3;
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if (test_vector_fmul_add(&fdsp, &cdsp, src0, src1, src2))
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ret -= 1 << 4;
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if (test_vector_fmul_reverse(&fdsp, &cdsp, src0, src1))
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ret -= 1 << 5;
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if (test_butterflies_float(&fdsp, &cdsp, src0, src1))
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ret -= 1 << 6;
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if (test_scalarproduct_float(&fdsp, &cdsp, src0, src1))
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ret -= 1 << 7;
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if (test_vector_dmul_scalar(&fdsp, &cdsp, dbl_src0, dbl_src1[0]))
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ret -= 1 << 8;
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return ret;
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}
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#endif /* TEST */
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