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/* 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 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 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>
class SOLStream : public Audio::SeekableAudioStream {
private:
/**
* Read stream containing possibly-compressed SOL audio.
*/
Common::DisposablePtr<Common::SeekableReadStream> _stream;
/**
* Start offset of the audio data in the read stream.
*/
int32 _dataOffset;
/**
* Sample rate of audio data.
*/
uint16 _sampleRate;
/**
* The raw (possibly-compressed) size of audio data in
* the stream.
*/
int32 _rawDataSize;
/**
* The last sample from the previous DPCM decode.
*/
union {
struct { int16 l; int16 r; } _dpcmCarry16;
struct { uint8 l; uint8 r; } _dpcmCarry8;
};
/**
* The calculated length of the stream.
*/
Audio::Timestamp _length;
virtual bool seek(const Audio::Timestamp &where) override;
virtual Audio::Timestamp getLength() const override;
virtual int readBuffer(int16 *buffer, const int numSamples) override;
virtual bool isStereo() const override;
virtual int getRate() const override;
virtual bool endOfData() const override;
virtual bool rewind() override;
public:
SOLStream(Common::SeekableReadStream *stream, const DisposeAfterUse::Flag disposeAfterUse, const int32 dataOffset, const uint16 sampleRate, const int32 rawDataSize);
};
Audio::SeekableAudioStream *makeSOLStream(Common::SeekableReadStream *stream, DisposeAfterUse::Flag disposeAfterUse);
Audio::SeekableAudioStream *makeSOLStream(Common::SeekableReadStream *headerStream, Common::SeekableReadStream *dataStream, DisposeAfterUse::Flag disposeAfterUse);
}
#endif
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