ffmpeg/libavcodec/aarch64/fdctdsp_init_aarch64.c
Ramiro Polla d4d09c8e42 lavc/aarch64/fdct: add neon-optimized fdct for aarch64
The code is imported from libjpeg-turbo-3.0.1. The neon registers used
have been changed to avoid modifying v8-v15.

Reviewed-by: Martin Storsjö <martin@martin.st>
2024-05-13 14:54:10 +02:00

40 lines
1.3 KiB
C

/*
* 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 "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavutil/aarch64/cpu.h"
#include "libavcodec/avcodec.h"
#include "libavcodec/fdctdsp.h"
#include "fdct.h"
av_cold void ff_fdctdsp_init_aarch64(FDCTDSPContext *c, AVCodecContext *avctx,
unsigned high_bit_depth)
{
int cpu_flags = av_get_cpu_flags();
if (have_neon(cpu_flags)) {
if (!high_bit_depth) {
if (avctx->dct_algo == FF_DCT_AUTO ||
avctx->dct_algo == FF_DCT_NEON) {
c->fdct = ff_fdct_neon;
}
}
}
}