1/* 2 * Copyright (c) 2009 Mans Rullgard <mans@mansr.com> 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * FFmpeg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21#include "libavutil/arm/cpu.h" 22#include "libavcodec/fft.h" 23#include "libavcodec/rdft.h" 24#include "libavcodec/synth_filter.h" 25 26void ff_fft_permute_neon(FFTContext *s, FFTComplex *z); 27void ff_fft_calc_neon(FFTContext *s, FFTComplex *z); 28 29void ff_imdct_half_vfp(FFTContext *s, FFTSample *output, const FFTSample *input); 30 31void ff_imdct_calc_neon(FFTContext *s, FFTSample *output, const FFTSample *input); 32void ff_imdct_half_neon(FFTContext *s, FFTSample *output, const FFTSample *input); 33void ff_mdct_calc_neon(FFTContext *s, FFTSample *output, const FFTSample *input); 34 35void ff_rdft_calc_neon(struct RDFTContext *s, FFTSample *z); 36 37av_cold void ff_fft_init_arm(FFTContext *s) 38{ 39 int cpu_flags = av_get_cpu_flags(); 40 41 if (have_vfp(cpu_flags)) { 42#if CONFIG_MDCT 43 if (!have_vfpv3(cpu_flags)) 44 s->imdct_half = ff_imdct_half_vfp; 45#endif 46 } 47 48 if (have_neon(cpu_flags)) { 49#if CONFIG_FFT 50 s->fft_permute = ff_fft_permute_neon; 51 s->fft_calc = ff_fft_calc_neon; 52#endif 53#if CONFIG_MDCT 54 s->imdct_calc = ff_imdct_calc_neon; 55 s->imdct_half = ff_imdct_half_neon; 56 s->mdct_calc = ff_mdct_calc_neon; 57 s->mdct_permutation = FF_MDCT_PERM_INTERLEAVE; 58#endif 59 } 60} 61 62#if CONFIG_RDFT 63av_cold void ff_rdft_init_arm(RDFTContext *s) 64{ 65 int cpu_flags = av_get_cpu_flags(); 66 67 if (have_neon(cpu_flags)) 68 s->rdft_calc = ff_rdft_calc_neon; 69} 70#endif 71