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ffmpeg/libavutil/tests/float_dsp.c

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/*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <float.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.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 0.005
static 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 0.008
static 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 0.005
static 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 0.2
static 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;
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]);
if (argc > 2 && !strcmp(argv[1], "-s"))
seed = strtoul(argv[2], NULL, 10);
else
seed = av_get_random_seed();
av_log(NULL, AV_LOG_INFO, "float_dsp-test: random seed %u\n", seed);
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);
avpriv_float_dsp_init(&fdsp, 1);
av_set_cpu_flags_mask(0);
avpriv_float_dsp_init(&cdsp, 1);
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;
return ret;
}
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