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libavcodec/arm/fft_fixed_init_arm.c

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00001 /*
00002  * Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
00003  *
00004  * This file is part of Libav.
00005  *
00006  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
00018  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00019  */
00020 
00021 #define CONFIG_FFT_FLOAT 0
00022 #include "libavcodec/fft.h"
00023 
00024 void ff_fft_fixed_calc_neon(FFTContext *s, FFTComplex *z);
00025 void ff_mdct_fixed_calc_neon(FFTContext *s, FFTSample *o, const FFTSample *i);
00026 void ff_mdct_fixed_calcw_neon(FFTContext *s, FFTDouble *o, const FFTSample *i);
00027 
00028 av_cold void ff_fft_fixed_init_arm(FFTContext *s)
00029 {
00030     if (HAVE_NEON) {
00031         s->fft_permutation = FF_FFT_PERM_SWAP_LSBS;
00032         s->fft_calc        = ff_fft_fixed_calc_neon;
00033 
00034 #if CONFIG_MDCT
00035         if (!s->inverse && s->mdct_bits >= 5) {
00036             s->mdct_permutation = FF_MDCT_PERM_INTERLEAVE;
00037             s->mdct_calc        = ff_mdct_fixed_calc_neon;
00038             s->mdct_calcw       = ff_mdct_fixed_calcw_neon;
00039         }
00040 #endif
00041     }
00042 }
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