mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
afb967b81e
Segmented loads are slow, so here we use unit-strided load and narrowing shifts. c910: fcmul_add_c: 2179 fcmul_add_rvv_f64: 1652 c908: fcmul_add_c: 4891.2 fcmul_add_rvv_f64: 2399.5 Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>
86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/*
|
|
* Copyright (c) 2017 Paul B Mahol
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#ifndef AVFILTER_AFIRDSP_H
|
|
#define AVFILTER_AFIRDSP_H
|
|
|
|
#include <stddef.h>
|
|
|
|
#include "config.h"
|
|
#include "libavutil/attributes.h"
|
|
|
|
typedef struct AudioFIRDSPContext {
|
|
void (*fcmul_add)(float *sum, const float *t, const float *c,
|
|
ptrdiff_t len);
|
|
void (*dcmul_add)(double *sum, const double *t, const double *c,
|
|
ptrdiff_t len);
|
|
} AudioFIRDSPContext;
|
|
|
|
void ff_afir_init_riscv(AudioFIRDSPContext *s);
|
|
void ff_afir_init_x86(AudioFIRDSPContext *s);
|
|
|
|
static void fcmul_add_c(float *sum, const float *t, const float *c, ptrdiff_t len)
|
|
{
|
|
int n;
|
|
|
|
for (n = 0; n < len; n++) {
|
|
const float cre = c[2 * n ];
|
|
const float cim = c[2 * n + 1];
|
|
const float tre = t[2 * n ];
|
|
const float tim = t[2 * n + 1];
|
|
|
|
sum[2 * n ] += tre * cre - tim * cim;
|
|
sum[2 * n + 1] += tre * cim + tim * cre;
|
|
}
|
|
|
|
sum[2 * n] += t[2 * n] * c[2 * n];
|
|
}
|
|
|
|
static void dcmul_add_c(double *sum, const double *t, const double *c, ptrdiff_t len)
|
|
{
|
|
int n;
|
|
|
|
for (n = 0; n < len; n++) {
|
|
const double cre = c[2 * n ];
|
|
const double cim = c[2 * n + 1];
|
|
const double tre = t[2 * n ];
|
|
const double tim = t[2 * n + 1];
|
|
|
|
sum[2 * n ] += tre * cre - tim * cim;
|
|
sum[2 * n + 1] += tre * cim + tim * cre;
|
|
}
|
|
|
|
sum[2 * n] += t[2 * n] * c[2 * n];
|
|
}
|
|
|
|
static av_unused void ff_afir_init(AudioFIRDSPContext *dsp)
|
|
{
|
|
dsp->fcmul_add = fcmul_add_c;
|
|
dsp->dcmul_add = dcmul_add_c;
|
|
|
|
#if ARCH_RISCV
|
|
ff_afir_init_riscv(dsp);
|
|
#elif ARCH_X86
|
|
ff_afir_init_x86(dsp);
|
|
#endif
|
|
}
|
|
|
|
#endif /* AVFILTER_AFIRDSP_H */
|