adpcm_decoder.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef BLADERUNNER_ADPCM_DECODER_H
#define BLADERUNNER_ADPCM_DECODER_H

#include "common/types.h"

namespace BladeRunner {

class ADPCMWestwoodDecoder {
    int16 _stepIndex;
    int32 _predictor;

public:
    ADPCMWestwoodDecoder()
        : _stepIndex(0), _predictor(0) {
    }

    void setParameters(int16 stepIndex, int32 predictor) {
        _stepIndex = stepIndex;
        _predictor = predictor;
    }

    void decode(uint8 *in, size_t size, int16 *out, bool forceLittleEndianOut);
};

} // End of namespace BladeRunner

#endif