/* * 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 } }