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https://github.com/libretro/scummvm.git
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103 lines
3.1 KiB
C++
103 lines
3.1 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef TINSEL_ADPCM_H
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#define TINSEL_ADPCM_H
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#include "audio/decoders/adpcm_intern.h"
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namespace Tinsel {
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class Tinsel_ADPCMStream : public Audio::ADPCMStream {
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protected:
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struct {
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// Tinsel
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double predictor;
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double K0, K1;
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double d0, d1;
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} _status;
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void reset() {
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ADPCMStream::reset();
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memset(&_status, 0, sizeof(_status));
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}
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int16 decodeTinsel(int16, double);
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void readBufferTinselHeader();
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public:
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Tinsel_ADPCMStream(Common::SeekableReadStream *stream, DisposeAfterUse::Flag disposeAfterUse, uint32 size, int rate, int channels, uint32 blockAlign)
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: ADPCMStream(stream, disposeAfterUse, size, rate, channels, blockAlign) {
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if (blockAlign == 0)
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error("Tinsel_ADPCMStream(): blockAlign isn't specified");
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if (channels != 1)
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error("Tinsel_ADPCMStream(): Tinsel ADPCM only supports mono");
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memset(&_status, 0, sizeof(_status));
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}
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};
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class Tinsel4_ADPCMStream : public Tinsel_ADPCMStream {
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public:
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Tinsel4_ADPCMStream(Common::SeekableReadStream *stream, DisposeAfterUse::Flag disposeAfterUse, uint32 size, int rate, int channels, uint32 blockAlign)
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: Tinsel_ADPCMStream(stream, disposeAfterUse, size, rate, channels, blockAlign) {}
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virtual int readBuffer(int16 *buffer, const int numSamples);
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};
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class Tinsel6_ADPCMStream : public Tinsel_ADPCMStream {
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protected:
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uint8 _chunkPos;
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uint16 _chunkData;
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void reset() {
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ADPCMStream::reset();
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_chunkPos = 0;
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_chunkData = 0;
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}
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public:
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Tinsel6_ADPCMStream(Common::SeekableReadStream *stream, DisposeAfterUse::Flag disposeAfterUse, uint32 size, int rate, int channels, uint32 blockAlign)
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: Tinsel_ADPCMStream(stream, disposeAfterUse, size, rate, channels, blockAlign) {
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_chunkPos = 0;
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_chunkData = 0;
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}
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virtual int readBuffer(int16 *buffer, const int numSamples);
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};
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class Tinsel8_ADPCMStream : public Tinsel_ADPCMStream {
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public:
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Tinsel8_ADPCMStream(Common::SeekableReadStream *stream, DisposeAfterUse::Flag disposeAfterUse, uint32 size, int rate, int channels, uint32 blockAlign)
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: Tinsel_ADPCMStream(stream, disposeAfterUse, size, rate, channels, blockAlign) {}
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virtual int readBuffer(int16 *buffer, const int numSamples);
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};
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} // End of namespace Tinsel
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#endif
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