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Diffstat (limited to 'audio/mods/maxtrax.h')
| -rw-r--r-- | audio/mods/maxtrax.h | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/audio/mods/maxtrax.h b/audio/mods/maxtrax.h new file mode 100644 index 0000000000..2f890afe2d --- /dev/null +++ b/audio/mods/maxtrax.h @@ -0,0 +1,225 @@ +/* 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. + * + * $URL$ + * $Id$ + * + */ + +// see if all engines using this class are DISABLED +#if !defined(ENABLE_KYRA) + +// normal Header Guard +#elif !defined SOUND_MODS_MAXTRAX_H +#define SOUND_MODS_MAXTRAX_H + +// #define MAXTRAX_HAS_MODULATION +// #define MAXTRAX_HAS_MICROTONAL + +#include "audio/mods/paula.h" + +namespace Audio { + +class MaxTrax : public Paula { +public: + MaxTrax(int rate, bool stereo, uint16 vBlankFreq = 50, uint16 maxScores = 128); + virtual ~MaxTrax(); + + bool load(Common::SeekableReadStream &musicData, bool loadScores = true, bool loadSamples = true); + bool playSong(int songIndex, bool loop = false); + void advanceSong(int advance = 1); + int playNote(byte note, byte patch, uint16 duration, uint16 volume, bool rightSide); + void setVolume(const byte volume) { Common::StackLock lock(_mutex); _playerCtx.volume = volume; } + void setTempo(const uint16 tempo); + void stopMusic(); + /** + * Set a callback function for sync-events. + * @param callback Callback function, will be called synchronously, so DONT modify the player + * directly in response + */ + void setSignalCallback(void (*callback) (int)); + +protected: + void interrupt(); + +private: + enum { kNumPatches = 64, kNumVoices = 4, kNumChannels = 16, kNumExtraChannels = 1 }; + enum { kPriorityScore, kPriorityNote, kPrioritySound }; + +#ifdef MAXTRAX_HAS_MICROTONAL + int16 _microtonal[128]; +#endif + + struct Event { + uint16 startTime; + uint16 stopTime; + byte command; + byte parameter; + }; + + const struct Score { + const Event *events; + uint32 numEvents; + } *_scores; + + int _numScores; + + struct { + uint32 sineValue; + uint16 vBlankFreq; + int32 ticks; + int32 tickUnit; + uint16 frameUnit; + + uint16 maxScoreNum; + uint16 tempo; + uint16 tempoInitial; + uint16 tempoStart; + int16 tempoDelta; + int32 tempoTime; + int32 tempoTicks; + + byte volume; + + bool filterOn; + bool handleVolume; + bool musicLoop; + + int scoreIndex; + const Event *nextEvent; + int32 nextEventTime; + + void (*syncCallBack) (int); + const Event *repeatPoint[4]; + byte repeatCount[4]; + } _playerCtx; + + struct Envelope { + uint16 duration; + uint16 volume; + }; + + struct Patch { + const Envelope *attackPtr; + //Envelope *releasePtr; + uint16 attackLen; + uint16 releaseLen; + + int16 tune; + uint16 volume; + + // this was the SampleData struct in the assembler source + const int8 *samplePtr; + uint32 sampleTotalLen; + uint32 sampleAttackLen; + uint16 sampleOctaves; + } _patch[kNumPatches]; + + struct ChannelContext { + const Patch *patch; + uint16 regParamNumber; + + uint16 modulation; + uint16 modulationTime; + + int16 microtonal; + + uint16 portamentoTime; + + int16 pitchBend; + int16 pitchReal; + int8 pitchBendRange; + + uint8 volume; +// uint8 voicesActive; + + enum { + kFlagRightChannel = 1 << 0, + kFlagPortamento = 1 << 1, + kFlagDamper = 1 << 2, + kFlagMono = 1 << 3, + kFlagMicrotonal = 1 << 4, + kFlagModVolume = 1 << 5 + }; + byte flags; + bool isAltered; + + uint8 lastNote; +// uint8 program; + + } _channelCtx[kNumChannels + kNumExtraChannels]; + + struct VoiceContext { + ChannelContext *channel; + const Patch *patch; + const Envelope *envelope; +// uint32 uinqueId; + int32 preCalcNote; + uint32 ticksLeft; + int32 portaTicks; + int32 incrVolume; +// int32 periodOffset; + uint16 envelopeLeft; + uint16 noteVolume; + uint16 baseVolume; + uint16 lastPeriod; + byte baseNote; + byte endNote; + byte octave; +// byte number; +// byte link; + enum { + kStatusFree, + kStatusHalt, + kStatusDecay, + kStatusRelease, + kStatusSustain, + kStatusAttack, + kStatusStart + }; + uint8 isBlocked; + uint8 priority; + byte status; + byte lastVolume; + byte tieBreak; + bool hasDamper; + bool hasPortamento; + byte dmaOff; + + int32 stopEventTime; + } _voiceCtx[kNumVoices]; + + void controlCh(ChannelContext &channel, byte command, byte data); + void freePatches(); + void freeScores(); + void resetChannel(ChannelContext &chan, bool rightChannel); + void resetPlayer(); + + int8 pickvoice(uint pick, int16 pri); + uint16 calcNote(const VoiceContext &voice); + int8 noteOn(ChannelContext &channel, byte note, uint16 volume, uint16 pri); + void killVoice(byte num); + + static void outPutEvent(const Event &ev, int num = -1); + static void outPutScore(const Score &sc, int num = -1); +}; +} // End of namespace Audio + +#endif // !defined SOUND_MODS_MAXTRAX_H |