mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
ca664f2254
In this case, the inner loop computing the scalar product can be reduced to just one multiplication and one sum even with 128-bit vectors. The result is a lot simpler, but also brings more modest performance gains: flac_lpc_16_13_c: 15241.0 flac_lpc_16_13_rvv_i32: 11230.0 flac_lpc_16_16_c: 17884.0 flac_lpc_16_16_rvv_i32: 12125.7 flac_lpc_16_29_c: 27847.7 flac_lpc_16_29_rvv_i32: 10494.0 flac_lpc_16_32_c: 30051.5 flac_lpc_16_32_rvv_i32: 10355.0
125 lines
5.2 KiB
C
125 lines
5.2 KiB
C
/*
|
|
* Copyright © 2023 Rémi Denis-Courmont.
|
|
*
|
|
* 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 "libavutil/attributes.h"
|
|
#include "libavutil/cpu.h"
|
|
#include "libavutil/riscv/cpu.h"
|
|
#include "libavcodec/flacdsp.h"
|
|
|
|
void ff_flac_lpc16_rvv(int32_t *decoded, const int coeffs[32],
|
|
int pred_order, int qlevel, int len);
|
|
void ff_flac_lpc32_rvv(int32_t *decoded, const int coeffs[32],
|
|
int pred_order, int qlevel, int len);
|
|
void ff_flac_lpc32_rvv_simple(int32_t *decoded, const int coeffs[32],
|
|
int pred_order, int qlevel, int len);
|
|
void ff_flac_decorrelate_indep2_16_rvv(uint8_t **out, int32_t **in,
|
|
int channels, int len, int shift);
|
|
void ff_flac_decorrelate_indep4_16_rvv(uint8_t **out, int32_t **in,
|
|
int channels, int len, int shift);
|
|
void ff_flac_decorrelate_indep6_16_rvv(uint8_t **out, int32_t **in,
|
|
int channels, int len, int shift);
|
|
void ff_flac_decorrelate_indep8_16_rvv(uint8_t **out, int32_t **in,
|
|
int channels, int len, int shift);
|
|
void ff_flac_decorrelate_ls_16_rvv(uint8_t **out, int32_t **in,
|
|
int channels, int len, int shift);
|
|
void ff_flac_decorrelate_rs_16_rvv(uint8_t **out, int32_t **in,
|
|
int channels, int len, int shift);
|
|
void ff_flac_decorrelate_ms_16_rvv(uint8_t **out, int32_t **in,
|
|
int channels, int len, int shift);
|
|
void ff_flac_decorrelate_indep2_32_rvv(uint8_t **out, int32_t **in,
|
|
int channels, int len, int shift);
|
|
void ff_flac_decorrelate_indep4_32_rvv(uint8_t **out, int32_t **in,
|
|
int channels, int len, int shift);
|
|
void ff_flac_decorrelate_indep6_32_rvv(uint8_t **out, int32_t **in,
|
|
int channels, int len, int shift);
|
|
void ff_flac_decorrelate_indep8_32_rvv(uint8_t **out, int32_t **in,
|
|
int channels, int len, int shift);
|
|
void ff_flac_decorrelate_ls_32_rvv(uint8_t **out, int32_t **in,
|
|
int channels, int len, int shift);
|
|
void ff_flac_decorrelate_rs_32_rvv(uint8_t **out, int32_t **in,
|
|
int channels, int len, int shift);
|
|
void ff_flac_decorrelate_ms_32_rvv(uint8_t **out, int32_t **in,
|
|
int channels, int len, int shift);
|
|
|
|
av_cold void ff_flacdsp_init_riscv(FLACDSPContext *c, enum AVSampleFormat fmt,
|
|
int channels)
|
|
{
|
|
#if HAVE_RVV
|
|
int flags = av_get_cpu_flags();
|
|
|
|
if ((flags & AV_CPU_FLAG_RVV_I32) && (flags & AV_CPU_FLAG_RVB_ADDR)) {
|
|
int vlenb = ff_get_rv_vlenb();
|
|
|
|
if (vlenb >= 16) {
|
|
c->lpc16 = ff_flac_lpc16_rvv;
|
|
# if (__riscv_xlen >= 64)
|
|
if (vlenb > 16)
|
|
c->lpc32 = ff_flac_lpc32_rvv_simple;
|
|
else
|
|
c->lpc32 = ff_flac_lpc32_rvv;
|
|
}
|
|
|
|
switch (fmt) {
|
|
case AV_SAMPLE_FMT_S16:
|
|
switch (channels) {
|
|
case 2:
|
|
c->decorrelate[0] = ff_flac_decorrelate_indep2_16_rvv;
|
|
break;
|
|
case 4:
|
|
c->decorrelate[0] = ff_flac_decorrelate_indep4_16_rvv;
|
|
break;
|
|
case 6:
|
|
c->decorrelate[0] = ff_flac_decorrelate_indep6_16_rvv;
|
|
break;
|
|
case 8:
|
|
c->decorrelate[0] = ff_flac_decorrelate_indep8_16_rvv;
|
|
break;
|
|
}
|
|
c->decorrelate[1] = ff_flac_decorrelate_ls_16_rvv;
|
|
c->decorrelate[2] = ff_flac_decorrelate_rs_16_rvv;
|
|
c->decorrelate[3] = ff_flac_decorrelate_ms_16_rvv;
|
|
break;
|
|
case AV_SAMPLE_FMT_S32:
|
|
switch (channels) {
|
|
case 2:
|
|
c->decorrelate[0] = ff_flac_decorrelate_indep2_32_rvv;
|
|
break;
|
|
case 4:
|
|
c->decorrelate[0] = ff_flac_decorrelate_indep4_32_rvv;
|
|
break;
|
|
case 6:
|
|
c->decorrelate[0] = ff_flac_decorrelate_indep6_32_rvv;
|
|
break;
|
|
case 8:
|
|
c->decorrelate[0] = ff_flac_decorrelate_indep8_32_rvv;
|
|
break;
|
|
}
|
|
c->decorrelate[1] = ff_flac_decorrelate_ls_32_rvv;
|
|
c->decorrelate[2] = ff_flac_decorrelate_rs_32_rvv;
|
|
c->decorrelate[3] = ff_flac_decorrelate_ms_32_rvv;
|
|
break;
|
|
# endif
|
|
}
|
|
}
|
|
#endif
|
|
}
|