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Diffstat (limited to 'engines/zvision/sound/zork_raw.h')
| -rw-r--r-- | engines/zvision/sound/zork_raw.h | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/engines/zvision/sound/zork_raw.h b/engines/zvision/sound/zork_raw.h new file mode 100644 index 0000000000..481ea79f2d --- /dev/null +++ b/engines/zvision/sound/zork_raw.h @@ -0,0 +1,120 @@ +/* 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 ZVISION_ZORK_RAW_H +#define ZVISION_ZORK_RAW_H + +#include "audio/audiostream.h" + + +namespace Common { +class SeekableReadStream; +} + +namespace ZVision { + +class ZVision; + +struct SoundParams { + char identifier; + uint32 rate; + bool stereo; + bool packed; +}; + +/** + * This is a stream, which allows for playing raw ADPCM data from a stream. + */ +class RawZorkStream : public Audio::RewindableAudioStream { +public: + RawZorkStream(uint32 rate, bool stereo, DisposeAfterUse::Flag disposeStream, Common::SeekableReadStream *stream); + + ~RawZorkStream() { + } + +public: + static const SoundParams _zNemSoundParamLookupTable[6]; + static const SoundParams _zgiSoundParamLookupTable[5]; + +private: + const int _rate; // Sample rate of stream + Audio::Timestamp _playtime; // Calculated total play time + Common::DisposablePtr<Common::SeekableReadStream> _stream; // Stream to read data from + bool _endOfData; // Whether the stream end has been reached + uint _stereo; + + /** + * Holds the frequency and index from the last sample + * 0 holds the left channel, 1 holds the right channel + */ + struct { + int32 sample; + int16 index; + } _lastSample[2]; + + static const int16 _stepAdjustmentTable[8]; + static const int32 _amplitudeLookupTable[89]; + +public: + int readBuffer(int16 *buffer, const int numSamples); + + bool isStereo() const { return true; } + bool endOfData() const { return _endOfData; } + + int getRate() const { return _rate; } + Audio::Timestamp getLength() const { return _playtime; } + + bool rewind(); +}; + +/** + * Creates an audio stream, which plays from the given buffer. + * + * @param buffer Buffer to play from. + * @param size Size of the buffer in bytes. + * @param rate Rate of the sound data. + * @param dispose AfterUse Whether to free the buffer after use (with free!). + * @return The new SeekableAudioStream (or 0 on failure). + */ +Audio::RewindableAudioStream *makeRawZorkStream(const byte *buffer, uint32 size, + int rate, + bool stereo, + DisposeAfterUse::Flag disposeAfterUse = DisposeAfterUse::YES); + +/** + * Creates an audio stream, which plays from the given stream. + * + * @param stream Stream object to play from. + * @param rate Rate of the sound data. + * @param dispose AfterUse Whether to delete the stream after use. + * @return The new SeekableAudioStream (or 0 on failure). + */ +Audio::RewindableAudioStream *makeRawZorkStream(Common::SeekableReadStream *stream, + int rate, + bool stereo, + DisposeAfterUse::Flag disposeAfterUse = DisposeAfterUse::YES); + +Audio::RewindableAudioStream *makeRawZorkStream(const Common::String &filePath, ZVision *engine); + +} // End of namespace ZVision + +#endif |