diff options
Diffstat (limited to 'sound/softsynth/fmtowns_pc98/towns_audio.h')
| -rw-r--r-- | sound/softsynth/fmtowns_pc98/towns_audio.h | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/sound/softsynth/fmtowns_pc98/towns_audio.h b/sound/softsynth/fmtowns_pc98/towns_audio.h new file mode 100644 index 0000000000..82d390d9b6 --- /dev/null +++ b/sound/softsynth/fmtowns_pc98/towns_audio.h @@ -0,0 +1,162 @@ +/* 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. + * + * $URL$ + * $Id$ + * + */ + +#ifndef TOWNS_AUDIO_H +#define TOWNS_AUDIO_H + +#include "sound/softsynth/fmtowns_pc98/towns_pc98_fmsynth.h" + +class TownsAudioInterfacePluginDriver { +public: + virtual void timerCallback(int timerId) = 0; +}; + +class TownsAudio_PcmChannel; +class TownsAudio_WaveTable; + +class TownsAudioInterface : public TownsPC98_FmSynth { +public: + TownsAudioInterface(Audio::Mixer *mixer, TownsAudioInterfacePluginDriver *driver); + ~TownsAudioInterface(); + + bool init(); + + int callback(int command, ...); + +private: + void nextTickEx(int32 *buffer, uint32 bufferSize); + + void timerCallbackA(); + void timerCallbackB(); + + typedef int (TownsAudioInterface::*TownsAudioIntfCallback)(va_list&); + const TownsAudioIntfCallback *_intfOpcodes; + + int intf_reset(va_list &args); + int intf_keyOn(va_list &args); + int intf_keyOff(va_list &args); + int intf_setPanPos(va_list &args); + int intf_setInstrument(va_list &args); + int intf_loadInstrument(va_list &args); + int intf_setPitch(va_list &args); + int intf_setLevel(va_list &args); + int intf_chanOff(va_list &args); + int intf_writeReg(va_list &args); + int intf_bufferedWriteReg(va_list &args); + int intf_readRegBuffer(va_list &args); + int intf_setTimerA(va_list &args); + int intf_setTimerB(va_list &args); + int intf_enableTimerA(va_list &args); + int intf_enableTimerB(va_list &args); + int intf_reserveEffectChannels(va_list &args); + int intf_loadWaveTable(va_list &args); + int intf_unloadWaveTable(va_list &args); + int intf_pcmPlayEffect(va_list &args); + int intf_pcmChanOff(va_list &args); + int intf_pcmEffectPlaying(va_list &args); + int intf_fmKeyOn(va_list &args); + int intf_fmKeyOff(va_list &args); + int intf_fmSetPanPos(va_list &args); + int intf_fmSetInstrument(va_list &args); + int intf_fmLoadInstrument(va_list &args); + int intf_fmSetPitch(va_list &args); + int intf_fmSetLevel(va_list &args); + int intf_fmReset(va_list &args); + int intf_cdaSetVolume(va_list &args); + int intf_cdaReset(va_list &args); + int intf_pcmUpdateEnvelopeGenerator(va_list &args); + + int intf_notImpl(va_list &args); + + void fmReset(); + int fmKeyOn(int chan, int note, int velo); + int fmKeyOff(int chan); + int fmChanOff(int chan); + int fmSetPanPos(int chan, int mode); + int fmSetInstrument(int chan, int instrId); + int fmLoadInstrument(int instrId, const uint8 *data); + int fmSetPitch(int chan, int pitch); + int fmSetLevel(int chan, int lvl); + + void bufferedWriteReg(uint8 part, uint8 regAddress, uint8 value); + + uint8 _fmChanPlaying; + uint8 _fmChanNote[6]; + int16 _fmChanPitch[6]; + + uint8 *_fmSaveReg[2]; + uint8 *_fmInstruments; + + void pcmReset(); + int pcmKeyOn(int chan, int note, int velo); + int pcmKeyOff(int chan); + int pcmChanOff(int chan); + int pcmSetPanPos(int chan, int mode); + int pcmSetInstrument(int chan, int instrId); + int pcmLoadInstrument(int instrId, const uint8 *data); + int pcmSetPitch(int chan, int pitch); + int pcmSetLevel(int chan, int lvl); + void pcmUpdateEnvelopeGenerator(int chan); + + TownsAudio_PcmChannel *_pcmChan; + uint8 _pcmChanOut; + uint8 _pcmChanReserved; + uint8 _pcmChanKeyPressed; + uint8 _pcmChanEffectPlaying; + uint8 _pcmChanKeyPlaying; + + uint8 _pcmChanNote[8]; + uint8 _pcmChanVelo[8]; + uint8 _pcmChanLevel[8]; + + uint8 _numReservedChannels; + uint8 *_pcmInstruments; + + TownsAudio_WaveTable *_waveTables; + uint8 _numWaveTables; + uint32 _waveTablesTotalDataSize; + + void pcmCalcPhaseStep(TownsAudio_PcmChannel *p, TownsAudio_WaveTable *w); + + void cdaReset(); + + const float _baserate; + uint32 _timerBase; + uint32 _tickLength; + uint32 _timer; + + TownsAudioInterfacePluginDriver *_drv; + bool _ready; + + static const uint8 _chanFlags[]; + static const uint16 _frequency[]; + static const uint8 _carrier[]; + static const uint8 _fmDefaultInstrument[]; + static const uint16 _pcmPhase1[]; + static const uint16 _pcmPhase2[]; +}; + +#endif + |