/* * 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 <float.h>#include <math.h>#include <stdint.h>#include <stdlib.h>#include <string.h>#if HAVE_UNISTD_H#include <unistd.h> /* for getopt */#endif#if !HAVE_GETOPT#include "compat/getopt.c"#endif #include "libavutil/common.h"#include "libavutil/cpu.h"#include "libavutil/internal.h"#include "libavutil/lfg.h"#include "libavutil/log.h"#include "libavutil/random_seed.h"#include "libavutil/float_dsp.h" #define LEN 240 static void fill_float_array(AVLFG *lfg, float *a, int len){    int i;    double bmg[2], stddev = 10.0, mean = 0.0;     for (i = 0; i < len; i += 2) {        av_bmg_get(lfg, bmg);        a[i]     = bmg[0] * stddev + mean;        a[i + 1] = bmg[1] * stddev + mean;    }}static int compare_floats(const float *a, const float *b, int len,                          float max_diff){    int i;    for (i = 0; i < len; i++) {        if (fabsf(a[i] - b[i]) > max_diff) {            av_log(NULL, AV_LOG_ERROR, "%d: %- .12f - %- .12f = % .12g\n",                   i, a[i], b[i], a[i] - b[i]);            return -1;        }    }    return 0;} static void fill_double_array(AVLFG *lfg, double *a, int len){    int i;    double bmg[2], stddev = 10.0, mean = 0.0;     for (i = 0; i < len; i += 2) {        av_bmg_get(lfg, bmg);        a[i]     = bmg[0] * stddev + mean;        a[i + 1] = bmg[1] * stddev + mean;    }} static int compare_doubles(const double *a, const double *b, int len,                           double max_diff){    int i;     for (i = 0; i < len; i++) {        if (fabs(a[i] - b[i]) > max_diff) {            av_log(NULL, AV_LOG_ERROR, "%d: %- .12f - %- .12f = % .12g\n",                   i, a[i], b[i], a[i] - b[i]);            return -1;        }    }    return 0;} static int test_vector_fmul(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,                            const float *v1, const float *v2){    LOCAL_ALIGNED(32, float, cdst, [LEN]);    LOCAL_ALIGNED(32, float, odst, [LEN]);    int ret;     cdsp->vector_fmul(cdst, v1, v2, LEN);    fdsp->vector_fmul(odst, v1, v2, LEN);     if (ret = compare_floats(cdst, odst, LEN, FLT_EPSILON))        av_log(NULL, AV_LOG_ERROR, "vector_fmul failed\n");     return ret;} #define ARBITRARY_FMAC_SCALAR_CONST 0.005static int test_vector_fmac_scalar(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,                                   const float *v1, const float *src0, float scale){    LOCAL_ALIGNED(32, float, cdst, [LEN]);    LOCAL_ALIGNED(32, float, odst, [LEN]);    int ret;     memcpy(cdst, v1, LEN * sizeof(*v1));    memcpy(odst, v1, LEN * sizeof(*v1));     cdsp->vector_fmac_scalar(cdst, src0, scale, LEN);    fdsp->vector_fmac_scalar(odst, src0, scale, LEN);     if (ret = compare_floats(cdst, odst, LEN, ARBITRARY_FMAC_SCALAR_CONST))        av_log(NULL, AV_LOG_ERROR, "vector_fmac_scalar failed\n");     return ret;} static int test_vector_fmul_scalar(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,                                   const float *v1, float scale){    LOCAL_ALIGNED(32, float, cdst, [LEN]);    LOCAL_ALIGNED(32, float, odst, [LEN]);    int ret;     cdsp->vector_fmul_scalar(cdst, v1, scale, LEN);    fdsp->vector_fmul_scalar(odst, v1, scale, LEN);     if (ret = compare_floats(cdst, odst, LEN, FLT_EPSILON))        av_log(NULL, AV_LOG_ERROR, "vector_fmul_scalar failed\n");     return ret;} static int test_vector_dmul_scalar(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,                                   const double *v1, double scale){    LOCAL_ALIGNED(32, double, cdst, [LEN]);    LOCAL_ALIGNED(32, double, odst, [LEN]);    int ret;     cdsp->vector_dmul_scalar(cdst, v1, scale, LEN);    fdsp->vector_dmul_scalar(odst, v1, scale, LEN);     if (ret = compare_doubles(cdst, odst, LEN, DBL_EPSILON))        av_log(NULL, AV_LOG_ERROR, "vector_dmul_scalar failed\n");     return ret;} #define ARBITRARY_FMUL_WINDOW_CONST 0.008static int test_vector_fmul_window(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,                                   const float *v1, const float *v2, const float *v3){    LOCAL_ALIGNED(32, float, cdst, [LEN]);    LOCAL_ALIGNED(32, float, odst, [LEN]);    int ret;     cdsp->vector_fmul_window(cdst, v1, v2, v3, LEN / 2);    fdsp->vector_fmul_window(odst, v1, v2, v3, LEN / 2);     if (ret = compare_floats(cdst, odst, LEN, ARBITRARY_FMUL_WINDOW_CONST))        av_log(NULL, AV_LOG_ERROR, "vector_fmul_window failed\n");     return ret;} #define ARBITRARY_FMUL_ADD_CONST 0.005static int test_vector_fmul_add(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,                                const float *v1, const float *v2, const float *v3){    LOCAL_ALIGNED(32, float, cdst, [LEN]);    LOCAL_ALIGNED(32, float, odst, [LEN]);    int ret;     cdsp->vector_fmul_add(cdst, v1, v2, v3, LEN);    fdsp->vector_fmul_add(odst, v1, v2, v3, LEN);     if (ret = compare_floats(cdst, odst, LEN, ARBITRARY_FMUL_ADD_CONST))        av_log(NULL, AV_LOG_ERROR, "vector_fmul_add failed\n");     return ret;} static int test_vector_fmul_reverse(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,                                    const float *v1, const float *v2){    LOCAL_ALIGNED(32, float, cdst, [LEN]);    LOCAL_ALIGNED(32, float, odst, [LEN]);    int ret;     cdsp->vector_fmul_reverse(cdst, v1, v2, LEN);    fdsp->vector_fmul_reverse(odst, v1, v2, LEN);     if (ret = compare_floats(cdst, odst, LEN, FLT_EPSILON))        av_log(NULL, AV_LOG_ERROR, "vector_fmul_reverse failed\n");     return ret;} static int test_butterflies_float(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,                                  const float *v1, const float *v2){    LOCAL_ALIGNED(32, float, cv1, [LEN]);    LOCAL_ALIGNED(32, float, cv2, [LEN]);    LOCAL_ALIGNED(32, float, ov1, [LEN]);    LOCAL_ALIGNED(32, float, ov2, [LEN]);    int ret;     memcpy(cv1, v1, LEN * sizeof(*v1));    memcpy(cv2, v2, LEN * sizeof(*v2));    memcpy(ov1, v1, LEN * sizeof(*v1));    memcpy(ov2, v2, LEN * sizeof(*v2));     cdsp->butterflies_float(cv1, cv2, LEN);    fdsp->butterflies_float(ov1, ov2, LEN);     if ((ret = compare_floats(cv1, ov1, LEN, FLT_EPSILON)) ||        (ret = compare_floats(cv2, ov2, LEN, FLT_EPSILON)))        av_log(NULL, AV_LOG_ERROR, "butterflies_float failed\n");     return ret;} #define ARBITRARY_SCALARPRODUCT_CONST 0.2static int test_scalarproduct_float(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,                                    const float *v1, const float *v2){    float cprod, oprod;    int ret;     cprod = cdsp->scalarproduct_float(v1, v2, LEN);    oprod = fdsp->scalarproduct_float(v1, v2, LEN);     if (ret = compare_floats(&cprod, &oprod, 1, ARBITRARY_SCALARPRODUCT_CONST))        av_log(NULL, AV_LOG_ERROR, "scalarproduct_float failed\n");     return ret;} int main(int argc, char **argv){    int ret = 0, seeded = 0;    uint32_t seed;    AVFloatDSPContext *fdsp, *cdsp;    AVLFG lfg;     LOCAL_ALIGNED(32, float, src0, [LEN]);    LOCAL_ALIGNED(32, float, src1, [LEN]);    LOCAL_ALIGNED(32, float, src2, [LEN]);    LOCAL_ALIGNED(32, double, dbl_src0, [LEN]);    LOCAL_ALIGNED(32, double, dbl_src1, [LEN]);     for (;;) {        int arg = getopt(argc, argv, "s:c:");        if (arg == -1)            break;        switch (arg) {        case 's':            seed = strtoul(optarg, NULL, 10);            seeded = 1;            break;        case 'c':        {            int cpuflags = av_get_cpu_flags();             if (av_parse_cpu_caps(&cpuflags, optarg) < 0)                return 1;             av_force_cpu_flags(cpuflags);            break;        }        }    }    if (!seeded)        seed = av_get_random_seed();     av_log(NULL, AV_LOG_INFO, "float_dsp-test: %s %u\n", seeded ? "seed" : "random seed", seed);     fdsp = avpriv_float_dsp_alloc(1);    av_force_cpu_flags(0);    cdsp = avpriv_float_dsp_alloc(1);     if (!fdsp || !cdsp) {        ret = 1;        goto end;    }     av_lfg_init(&lfg, seed);     fill_float_array(&lfg, src0, LEN);    fill_float_array(&lfg, src1, LEN);    fill_float_array(&lfg, src2, LEN);     fill_double_array(&lfg, dbl_src0, LEN);    fill_double_array(&lfg, dbl_src1, LEN);     if (test_vector_fmul(fdsp, cdsp, src0, src1))        ret -= 1 << 0;    if (test_vector_fmac_scalar(fdsp, cdsp, src2, src0, src1[0]))        ret -= 1 << 1;    if (test_vector_fmul_scalar(fdsp, cdsp, src0, src1[0]))        ret -= 1 << 2;    if (test_vector_fmul_window(fdsp, cdsp, src0, src1, src2))        ret -= 1 << 3;    if (test_vector_fmul_add(fdsp, cdsp, src0, src1, src2))        ret -= 1 << 4;    if (test_vector_fmul_reverse(fdsp, cdsp, src0, src1))        ret -= 1 << 5;    if (test_butterflies_float(fdsp, cdsp, src0, src1))        ret -= 1 << 6;    if (test_scalarproduct_float(fdsp, cdsp, src0, src1))        ret -= 1 << 7;    if (test_vector_dmul_scalar(fdsp, cdsp, dbl_src0, dbl_src1[0]))        ret -= 1 << 8; end:    av_freep(&fdsp);    av_freep(&cdsp);    return ret;}