fft_init_arm.c 2.27 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
/*
 * Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
 *
 * 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
 */

21
#include "libavutil/arm/cpu.h"
22
#include "libavcodec/fft.h"
23
#include "libavcodec/rdft.h"
24
#include "libavcodec/synth_filter.h"
25

26 27
void ff_fft_calc_vfp(FFTContext *s, FFTComplex *z);

28 29 30
void ff_fft_permute_neon(FFTContext *s, FFTComplex *z);
void ff_fft_calc_neon(FFTContext *s, FFTComplex *z);

31 32
void ff_imdct_half_vfp(FFTContext *s, FFTSample *output, const FFTSample *input);

33 34 35
void ff_imdct_calc_neon(FFTContext *s, FFTSample *output, const FFTSample *input);
void ff_imdct_half_neon(FFTContext *s, FFTSample *output, const FFTSample *input);
void ff_mdct_calc_neon(FFTContext *s, FFTSample *output, const FFTSample *input);
36

37 38
void ff_rdft_calc_neon(struct RDFTContext *s, FFTSample *z);

39 40
av_cold void ff_fft_init_arm(FFTContext *s)
{
41 42
    int cpu_flags = av_get_cpu_flags();

43 44
    if (have_vfp(cpu_flags) && !have_vfpv3(cpu_flags)) {
        s->fft_calc     = ff_fft_calc_vfp;
45
#if CONFIG_MDCT
46
        s->imdct_half   = ff_imdct_half_vfp;
47 48 49
#endif
    }

50
    if (have_neon(cpu_flags)) {
51
#if CONFIG_FFT
52 53
        s->fft_permute  = ff_fft_permute_neon;
        s->fft_calc     = ff_fft_calc_neon;
54
#endif
55
#if CONFIG_MDCT
56 57 58
        s->imdct_calc   = ff_imdct_calc_neon;
        s->imdct_half   = ff_imdct_half_neon;
        s->mdct_calc    = ff_mdct_calc_neon;
59
        s->mdct_permutation = FF_MDCT_PERM_INTERLEAVE;
60
#endif
61 62
    }
}
63 64 65 66

#if CONFIG_RDFT
av_cold void ff_rdft_init_arm(RDFTContext *s)
{
67 68 69
    int cpu_flags = av_get_cpu_flags();

    if (have_neon(cpu_flags))
70 71 72
        s->rdft_calc    = ff_rdft_calc_neon;
}
#endif