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/*

 * Copyright (c) 2009 Mans Rullgard 

 *

 * 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/arm/cpu.h"

#define CONFIG_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

    }

}