| 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 | |
| 26 | void ff_fft_calc_vfp(FFTContext *s, FFTComplex *z); |
| 27 | |
| 28 | void ff_fft_permute_neon(FFTContext *s, FFTComplex *z); |
| 29 | void ff_fft_calc_neon(FFTContext *s, FFTComplex *z); |
| 30 | |
| 31 | void ff_imdct_half_vfp(FFTContext *s, FFTSample *output, const FFTSample *input); |
| 32 | |
| 33 | void ff_imdct_calc_neon(FFTContext *s, FFTSample *output, const FFTSample *input); |
| 34 | void ff_imdct_half_neon(FFTContext *s, FFTSample *output, const FFTSample *input); |
| 35 | void ff_mdct_calc_neon(FFTContext *s, FFTSample *output, const FFTSample *input); |
| 36 | |
| 37 | void ff_rdft_calc_neon(struct RDFTContext *s, FFTSample *z); |
| 38 | |
| 39 | av_cold void ff_fft_init_arm(FFTContext *s) |
| 40 | { |
| 41 | int cpu_flags = av_get_cpu_flags(); |
| 42 | |
| 43 | if (have_vfp(cpu_flags) && !have_vfpv3(cpu_flags)) { |
| 44 | s->fft_calc = ff_fft_calc_vfp; |
| 45 | #if CONFIG_MDCT |
| 46 | s->imdct_half = ff_imdct_half_vfp; |
| 47 | #endif |
| 48 | } |
| 49 | |
| 50 | if (have_neon(cpu_flags)) { |
| 51 | #if CONFIG_FFT |
| 52 | s->fft_permute = ff_fft_permute_neon; |
| 53 | s->fft_calc = ff_fft_calc_neon; |
| 54 | #endif |
| 55 | #if CONFIG_MDCT |
| 56 | s->imdct_calc = ff_imdct_calc_neon; |
| 57 | s->imdct_half = ff_imdct_half_neon; |
| 58 | s->mdct_calc = ff_mdct_calc_neon; |
| 59 | s->mdct_permutation = FF_MDCT_PERM_INTERLEAVE; |
| 60 | #endif |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | #if CONFIG_RDFT |
| 65 | av_cold void ff_rdft_init_arm(RDFTContext *s) |
| 66 | { |
| 67 | int cpu_flags = av_get_cpu_flags(); |
| 68 | |
| 69 | if (have_neon(cpu_flags)) |
| 70 | s->rdft_calc = ff_rdft_calc_neon; |
| 71 | } |
| 72 | #endif |