/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 *   Mupen64plus-rsp-hle - audio.h                                         *
 *   Mupen64Plus homepage: http://code.google.com/p/mupen64plus/           *
 *   Copyright (C) 2014 Bobby Smiles                                       *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program 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 General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.          *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#ifndef AUDIO_H
#define AUDIO_H

#include <stddef.h>
#include <stdint.h>

#include "osal/preproc.h"

extern const int16_t RESAMPLE_LUT[64 * 4];

int32_t rdot(size_t n, const int16_t *x, const int16_t *y);

static osal_inline int16_t adpcm_predict_sample(uint8_t byte, uint8_t mask,
        unsigned lshift, unsigned rshift)
{
    int16_t sample = (uint16_t)(byte & mask) << lshift;
    sample >>= rshift; /* signed */
    return sample;
}

void adpcm_compute_residuals(int16_t* dst, const int16_t* src,
        const int16_t* cb_entry, const int16_t* last_samples, size_t count);

#endif
