#ifndef _SBRDSP_H_e7d4eb05_
#define _SBRDSP_H_e7d4eb05_

/*
 * This file was stolen from ffmpeg and modified for usability here.
 *  The original is
 * 
 * Copyright (c) 2012 Mans Rullgard
 *
 * This version is a derivative work of that version.  It is not free
 *  software; it is licensed under the GNU Lesser General Public
 *  License version 2.1, which places nontrivial restrictions on what
 *  may be done with it.  (I'm not terribly happy about that, but for
 *  my purposes accepting LGPL-infected code is a lower price than
 *  reimplementing it all myself.)
 *
 * The LGPL v2.1 as distributed with ffmpeg is in the accompanying file
 *  `LGPL-v2.1'.
 */

#include <stdint.h>

typedef struct SBRDSPContext {
    void (*sum64x5)(float *z);
    float (*sum_square)(float (*x)[2], int n);
    void (*neg_odd_64)(float *x);
    void (*qmf_pre_shuffle)(float *z);
    void (*qmf_post_shuffle)(float W[32][2], const float *z);
    void (*qmf_deint_neg)(float *v, const float *src);
    void (*qmf_deint_bfly)(float *v, const float *src0, const float *src1);
    void (*autocorrelate)(const float x[40][2], float phi[3][2][2]);
    void (*hf_gen)(float (*X_high)[2], const float (*X_low)[2],
                   const float alpha0[2], const float alpha1[2],
                   float bw, int start, int end);
    void (*hf_g_filt)(float (*Y)[2], const float (*X_high)[40][2],
                      const float *g_filt, int m_max, intptr_t ixh);
    void (*hf_apply_noise[4])(float (*Y)[2], const float *s_m,
                              const float *q_filt, int noise,
                              int kx, int m_max);
} SBRDSPContext;

extern const float ff_sbr_noise_table[][2];

void ff_sbrdsp_init(SBRDSPContext *s);
void ff_sbrdsp_init_arm(SBRDSPContext *s);
void ff_sbrdsp_init_x86(SBRDSPContext *s);

#endif