50 lines
1.7 KiB
C
Executable file
50 lines
1.7 KiB
C
Executable file
/*
|
|
* Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
|
|
*
|
|
* 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/arm/cpu.h"
|
|
|
|
#define FFT_FLOAT 0
|
|
#include "libavcodec/fft.h"
|
|
|
|
void ff_fft_fixed_calc_neon(FFTContext *s, FFTComplex *z);
|
|
void ff_mdct_fixed_calc_neon(FFTContext *s, FFTSample *o, const FFTSample *i);
|
|
void ff_mdct_fixed_calcw_neon(FFTContext *s, FFTDouble *o, const FFTSample *i);
|
|
|
|
av_cold void ff_fft_fixed_init_arm(FFTContext *s)
|
|
{
|
|
int cpu_flags = av_get_cpu_flags();
|
|
|
|
if (have_neon(cpu_flags)) {
|
|
s->fft_permutation = FF_FFT_PERM_SWAP_LSBS;
|
|
#if CONFIG_FFT
|
|
s->fft_calc = ff_fft_fixed_calc_neon;
|
|
#endif
|
|
|
|
#if CONFIG_MDCT
|
|
if (!s->inverse && s->nbits >= 3) {
|
|
s->mdct_permutation = FF_MDCT_PERM_INTERLEAVE;
|
|
s->mdct_calc = ff_mdct_fixed_calc_neon;
|
|
s->mdct_calcw = ff_mdct_fixed_calcw_neon;
|
|
}
|
|
#endif
|
|
}
|
|
}
|