/* * audio resampling * Copyright (c) 2004-2012 Michael Niedermayer <michaelni@gmx.at> * * 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 */ #ifndef SWRESAMPLE_RESAMPLE_H#define SWRESAMPLE_RESAMPLE_H #include "libavutil/log.h"#include "libavutil/samplefmt.h" #include "swresample_internal.h" typedef struct ResampleContext {    const AVClass *av_class;    uint8_t *filter_bank;    int filter_length;    int filter_alloc;    int ideal_dst_incr;    int dst_incr;    int dst_incr_div;    int dst_incr_mod;    int index;    int frac;    int src_incr;    int compensation_distance;    int phase_count;    int linear;    enum SwrFilterType filter_type;    double kaiser_beta;    double factor;    enum AVSampleFormat format;    int felem_size;    int filter_shift;    int phase_count_compensation;      /* desired phase_count when compensation is enabled */     struct {        void (*resample_one)(void *dst, const void *src,                             int n, int64_t index, int64_t incr);        int (*resample_common)(struct ResampleContext *c, void *dst,                               const void *src, int n, int update_ctx);        int (*resample_linear)(struct ResampleContext *c, void *dst,                               const void *src, int n, int update_ctx);    } dsp;} ResampleContext; void swri_resample_dsp_init(ResampleContext *c);void swri_resample_dsp_x86_init(ResampleContext *c);void swri_resample_dsp_arm_init(ResampleContext *c);void swri_resample_dsp_aarch64_init(ResampleContext *c); #endif /* SWRESAMPLE_RESAMPLE_H */