mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-18 15:48:48 +00:00
103 lines
3.1 KiB
C++
103 lines
3.1 KiB
C++
/* 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 TINSEL_ADPCM_H
|
|
#define TINSEL_ADPCM_H
|
|
|
|
#include "audio/decoders/adpcm_intern.h"
|
|
|
|
namespace Tinsel {
|
|
|
|
class Tinsel_ADPCMStream : public Audio::ADPCMStream {
|
|
protected:
|
|
struct {
|
|
// Tinsel
|
|
double predictor;
|
|
double K0, K1;
|
|
double d0, d1;
|
|
} _status;
|
|
|
|
void reset() {
|
|
ADPCMStream::reset();
|
|
memset(&_status, 0, sizeof(_status));
|
|
}
|
|
|
|
int16 decodeTinsel(int16, double);
|
|
void readBufferTinselHeader();
|
|
|
|
public:
|
|
Tinsel_ADPCMStream(Common::SeekableReadStream *stream, DisposeAfterUse::Flag disposeAfterUse, uint32 size, int rate, int channels, uint32 blockAlign)
|
|
: ADPCMStream(stream, disposeAfterUse, size, rate, channels, blockAlign) {
|
|
|
|
if (blockAlign == 0)
|
|
error("Tinsel_ADPCMStream(): blockAlign isn't specified");
|
|
|
|
if (channels != 1)
|
|
error("Tinsel_ADPCMStream(): Tinsel ADPCM only supports mono");
|
|
|
|
memset(&_status, 0, sizeof(_status));
|
|
}
|
|
|
|
};
|
|
|
|
class Tinsel4_ADPCMStream : public Tinsel_ADPCMStream {
|
|
public:
|
|
Tinsel4_ADPCMStream(Common::SeekableReadStream *stream, DisposeAfterUse::Flag disposeAfterUse, uint32 size, int rate, int channels, uint32 blockAlign)
|
|
: Tinsel_ADPCMStream(stream, disposeAfterUse, size, rate, channels, blockAlign) {}
|
|
|
|
virtual int readBuffer(int16 *buffer, const int numSamples);
|
|
};
|
|
|
|
class Tinsel6_ADPCMStream : public Tinsel_ADPCMStream {
|
|
protected:
|
|
uint8 _chunkPos;
|
|
uint16 _chunkData;
|
|
|
|
void reset() {
|
|
ADPCMStream::reset();
|
|
_chunkPos = 0;
|
|
_chunkData = 0;
|
|
}
|
|
|
|
public:
|
|
Tinsel6_ADPCMStream(Common::SeekableReadStream *stream, DisposeAfterUse::Flag disposeAfterUse, uint32 size, int rate, int channels, uint32 blockAlign)
|
|
: Tinsel_ADPCMStream(stream, disposeAfterUse, size, rate, channels, blockAlign) {
|
|
_chunkPos = 0;
|
|
_chunkData = 0;
|
|
}
|
|
|
|
virtual int readBuffer(int16 *buffer, const int numSamples);
|
|
};
|
|
|
|
class Tinsel8_ADPCMStream : public Tinsel_ADPCMStream {
|
|
public:
|
|
Tinsel8_ADPCMStream(Common::SeekableReadStream *stream, DisposeAfterUse::Flag disposeAfterUse, uint32 size, int rate, int channels, uint32 blockAlign)
|
|
: Tinsel_ADPCMStream(stream, disposeAfterUse, size, rate, channels, blockAlign) {}
|
|
|
|
virtual int readBuffer(int16 *buffer, const int numSamples);
|
|
};
|
|
|
|
|
|
} // End of namespace Tinsel
|
|
|
|
#endif
|