sol.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 SCI_SOUND_DECODERS_SOL_H
#define SCI_SOUND_DECODERS_SOL_H

#include "audio/audiostream.h"
#include "common/stream.h"

namespace Sci {

enum SOLFlags {
    kCompressed = 1,
    k16Bit      = 4,
    kStereo     = 16
};

template <bool STEREO, bool S16BIT, bool OLDDPCM8>
class SOLStream : public Audio::SeekableAudioStream {
private:
    Common::DisposablePtr<Common::SeekableReadStream> _stream;

    uint16 _sampleRate;

    int32 _rawDataSize;

    struct PopFixData {
        const bool enabled;
        uint8 state;
        uint8 preRepairSample;

        PopFixData(const bool e):
            enabled(e), state(0), preRepairSample(0) {}
    } _popfixDPCM8;

    union {
        struct { int16 l; int16 r; } _dpcmCarry16;
        struct { uint8 l; uint8 r; } _dpcmCarry8;
    };

    Audio::Timestamp _length;

    bool seek(const Audio::Timestamp &where) override;
    Audio::Timestamp getLength() const override;
    int readBuffer(int16 *buffer, const int numSamples) override;
    bool isStereo() const override;
    int getRate() const override;
    bool endOfData() const override;
    bool rewind() override;

public:
    SOLStream(Common::SeekableReadStream *stream, const DisposeAfterUse::Flag disposeAfterUse, const uint16 sampleRate, const int32 rawDataSize);
};

Audio::SeekableAudioStream *makeSOLStream(Common::SeekableReadStream *stream, DisposeAfterUse::Flag disposeAfterUse);

} // End of namespace Sci

#endif // SCI_SOUND_DECODERS_SOL_H