00001 /* 00002 * Copyright (c) 2009 Mans Rullgard <mans@mansr.com> 00003 * 00004 * This file is part of FFmpeg. 00005 * 00006 * FFMpeg is free software; you can redistribute it and/or 00007 * modify it under the terms of the GNU Lesser General Public 00008 * License as published by the Free Software Foundation; either 00009 * version 2.1 of the License, or (at your option) any later version. 00010 * 00011 * FFmpeg is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00014 * Lesser General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU Lesser General Public 00017 * License along with FFmpeg; if not, write to the Free Software 00018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00019 */ 00020 00021 #include "libavutil/arm/cpu.h" 00022 00023 #define CONFIG_FFT_FLOAT 0 00024 #include "libavcodec/fft.h" 00025 00026 void ff_fft_fixed_calc_neon(FFTContext *s, FFTComplex *z); 00027 void ff_mdct_fixed_calc_neon(FFTContext *s, FFTSample *o, const FFTSample *i); 00028 void ff_mdct_fixed_calcw_neon(FFTContext *s, FFTDouble *o, const FFTSample *i); 00029 00030 av_cold void ff_fft_fixed_init_arm(FFTContext *s) 00031 { 00032 int cpu_flags = av_get_cpu_flags(); 00033 00034 if (have_neon(cpu_flags)) { 00035 s->fft_permutation = FF_FFT_PERM_SWAP_LSBS; 00036 s->fft_calc = ff_fft_fixed_calc_neon; 00037 00038 #if CONFIG_MDCT 00039 if (!s->inverse && s->mdct_bits >= 5) { 00040 s->mdct_permutation = FF_MDCT_PERM_INTERLEAVE; 00041 s->mdct_calc = ff_mdct_fixed_calc_neon; 00042 s->mdct_calcw = ff_mdct_fixed_calcw_neon; 00043 } 00044 #endif 00045 } 00046 }
1.5.8