| /* |
| * 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 |
| } |
| } |