diff --git a/source/audiolib/include/al_midi.h b/source/audiolib/include/al_midi.h new file mode 100644 index 000000000..f49d6058a --- /dev/null +++ b/source/audiolib/include/al_midi.h @@ -0,0 +1,45 @@ +/* +Copyright (C) 1994-1995 Apogee Software, Ltd. + +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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +*/ +#ifndef __AL_MIDI_H +#define __AL_MIDI_H + +#include "opl3.h" + +#include + +typedef struct +{ + uint8_t SAVEK[2]; + uint8_t Level[2]; + uint8_t Env1[2]; + uint8_t Env2[2]; + uint8_t Wave[2]; + uint8_t Feedback; + int8_t Transpose; + int8_t Velocity; +} AdLibTimbre; + +extern AdLibTimbre ADLIB_TimbreBank[256]; + +opl3_chip *AL_GetChip(void); +void AL_RegisterTimbreBank(uint8_t *timbres); +void AL_SetStereo(int const stereo); + +#endif diff --git a/source/audiolib/include/opl3.h b/source/audiolib/include/opl3.h new file mode 100644 index 000000000..cc476c1f7 --- /dev/null +++ b/source/audiolib/include/opl3.h @@ -0,0 +1,160 @@ +//------------------------------------------------------------------------- +/* +Copyright (C) 2013-2019 Nuke.YKT + +This file is part of NBlood. + +NBlood is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License version 2 +as published by the Free Software Foundation. + +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. +*/ +//------------------------------------------------------------------------- +// +// Nuked OPL3 emulator. +// Thanks: +// MAME Development Team(Jarek Burczynski, Tatsuyuki Satoh): +// Feedback and Rhythm part calculation information. +// forums.submarine.org.uk(carbon14, opl3): +// Tremolo and phase generator calculation information. +// OPLx decapsulated(Matthew Gambrell, Olli Niemitalo): +// OPL2 ROMs. +// siliconpr0n.org(John McMaster, digshadow): +// YMF262 and VRC VII decaps and die shots. +// +// version: 1.8 +// + +#ifndef OPL_OPL3_H +#define OPL_OPL3_H + +#include + +#define OPL_WRITEBUF_SIZE 1024 +#define OPL_WRITEBUF_DELAY 2 + +typedef uintptr_t Bitu; +typedef intptr_t Bits; +typedef uint64_t Bit64u; +typedef int64_t Bit64s; +typedef uint32_t Bit32u; +typedef int32_t Bit32s; +typedef uint16_t Bit16u; +typedef int16_t Bit16s; +typedef uint8_t Bit8u; +typedef int8_t Bit8s; + +typedef struct _opl3_slot opl3_slot; +typedef struct _opl3_channel opl3_channel; +typedef struct _opl3_chip opl3_chip; + +struct _opl3_slot { + opl3_channel *channel; + opl3_chip *chip; + Bit16s out; + Bit16s fbmod; + Bit16s *mod; + Bit16s prout; + Bit16s eg_rout; + Bit16s eg_out; + Bit8u eg_inc; + Bit8u eg_gen; + Bit8u eg_rate; + Bit8u eg_ksl; + Bit8u *trem; + Bit8u reg_vib; + Bit8u reg_type; + Bit8u reg_ksr; + Bit8u reg_mult; + Bit8u reg_ksl; + Bit8u reg_tl; + Bit8u reg_ar; + Bit8u reg_dr; + Bit8u reg_sl; + Bit8u reg_rr; + Bit8u reg_wf; + Bit8u key; + Bit32u pg_reset; + Bit32u pg_phase; + Bit16u pg_phase_out; + Bit8u slot_num; +}; + +struct _opl3_channel { + opl3_slot *slots[2]; + opl3_channel *pair; + opl3_chip *chip; + Bit16s *out[4]; + Bit8u chtype; + Bit16u f_num; + Bit8u block; + Bit8u fb; + Bit8u con; + Bit8u alg; + Bit8u ksv; + Bit16u cha, chb; + Bit32s leftpan; + Bit32s rightpan; + Bit8u ch_num; +}; + +typedef struct _opl3_writebuf { + Bit64u time; + Bit16u reg; + Bit8u data; +} opl3_writebuf; + +struct _opl3_chip { + opl3_channel channel[18]; + opl3_slot slot[36]; + Bit16u timer; + Bit64u eg_timer; + Bit8u eg_timerrem; + Bit8u eg_state; + Bit8u eg_add; + Bit8u newm; + Bit8u nts; + Bit8u rhy; + Bit8u vibpos; + Bit8u vibshift; + Bit8u tremolo; + Bit8u tremolopos; + Bit8u tremoloshift; + Bit32u noise; + Bit16s zeromod; + Bit32s mixbuff[2]; + Bit8u rm_hh_bit2; + Bit8u rm_hh_bit3; + Bit8u rm_hh_bit7; + Bit8u rm_hh_bit8; + Bit8u rm_tc_bit3; + Bit8u rm_tc_bit5; + Bit8u stereoext; + Bit32s rateratio; + Bit32s samplecnt; + Bit16s oldsamples[2]; + Bit16s samples[2]; + + Bit64u writebuf_samplecnt; + Bit32u writebuf_cur; + Bit32u writebuf_last; + Bit64u writebuf_lasttime; + opl3_writebuf writebuf[OPL_WRITEBUF_SIZE]; +}; + +void OPL3_Generate(opl3_chip *chip, Bit16s *buf); +void OPL3_GenerateResampled(opl3_chip *chip, Bit16s *buf); +void OPL3_Reset(opl3_chip *chip, Bit32u samplerate); +void OPL3_WriteReg(opl3_chip *chip, Bit16u reg, Bit8u v); +void OPL3_WriteRegBuffered(opl3_chip *chip, Bit16u reg, Bit8u v); +void OPL3_GenerateStream(opl3_chip *chip, Bit16s *sndptr, Bit32u numsamples); +#endif diff --git a/source/audiolib/include/oplmidi.h b/source/audiolib/include/oplmidi.h new file mode 100644 index 000000000..e4964f038 --- /dev/null +++ b/source/audiolib/include/oplmidi.h @@ -0,0 +1,94 @@ +//------------------------------------------------------------------------- +/* +Copyright (C) 2010-2019 EDuke32 developers and contributors +Copyright (C) 2019 Nuke.YKT + +This file is part of NBlood. + +NBlood is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License version 2 +as published by the Free Software Foundation. + +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 __MIDI_H +#define __MIDI_H + +namespace OPLMusic { + +enum MIDI_Errors + { + MIDI_Warning = -2, + MIDI_Error = -1, + MIDI_Ok = 0, + MIDI_NullMidiModule, + MIDI_InvalidMidiFile, + MIDI_UnknownMidiFormat, + MIDI_NoTracks, + MIDI_InvalidTrack, + MIDI_NoMemory, + MIDI_DPMI_Error + }; + + +#define MIDI_PASS_THROUGH 1 +#define MIDI_DONT_PLAY 0 + +#define MIDI_MaxVolume 255 + +extern char MIDI_PatchMap[ 128 ]; + +typedef struct +{ + void (*NoteOff)(int32_t channel, int32_t key, int32_t velocity); + void (*NoteOn)(int32_t channel, int32_t key, int32_t velocity); + void (*PolyAftertouch)(int32_t channel, int32_t key, int32_t pressure); + void (*ControlChange)(int32_t channel, int32_t number, int32_t value); + void (*ProgramChange)(int32_t channel, int32_t program); + void (*ChannelAftertouch)(int32_t channel, int32_t pressure); + void (*PitchBend)(int32_t channel, int32_t lsb, int32_t msb); + void (*FinishBuffer)(void); +} midifuncs; + +void MIDI_RerouteMidiChannel( int32_t channel, int32_t ( *function )( int32_t event, int32_t c1, int32_t c2 ) ); +int32_t MIDI_AllNotesOff( void ); +void MIDI_SetUserChannelVolume( int32_t channel, int32_t volume ); +void MIDI_ResetUserChannelVolume( void ); +int32_t MIDI_Reset( void ); +int32_t MIDI_SetVolume( int32_t volume ); +int32_t MIDI_GetVolume( void ); +void MIDI_SetMidiFuncs( midifuncs *funcs ); +void MIDI_SetContext( int32_t context ); +int32_t MIDI_GetContext( void ); +void MIDI_SetLoopFlag( int32_t loopflag ); +void MIDI_ContinueSong( void ); +void MIDI_PauseSong( void ); +int32_t MIDI_SongPlaying( void ); +void MIDI_StopSong( void ); +int32_t MIDI_PlaySong( char *song, int32_t loopflag ); +void MIDI_SetTempo( int32_t tempo ); +int32_t MIDI_GetTempo( void ); +void MIDI_SetSongTick( uint32_t PositionInTicks ); +void MIDI_SetSongTime( uint32_t milliseconds ); +void MIDI_SetSongPosition( int32_t measure, int32_t beat, int32_t tick ); +void MIDI_GetSongPosition( songposition *pos ); +void MIDI_GetSongLength( songposition *pos ); +void MIDI_LoadTimbres( void ); +void MIDI_MusicMix( char *buffer, int length ); +void MIDI_UpdateMusic(void); +void MIDI_SetDivision( int32_t division ); +int32_t MUSIC_InitMidi(int32_t card, midifuncs *Funcs, int32_t Address); + +} + +#endif diff --git a/source/audiolib/src/_al_midi.h b/source/audiolib/src/_al_midi.h new file mode 100644 index 000000000..4de5c5f5a --- /dev/null +++ b/source/audiolib/src/_al_midi.h @@ -0,0 +1,126 @@ +/* +Copyright (C) 1994-1995 Apogee Software, Ltd. + +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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +*/ +#ifndef ___AL_MIDI_H +#define ___AL_MIDI_H + +#include + +#define STEREO_DETUNE 5 + +#define lobyte(num) ((uint32_t)*((char *)&(num))) +#define hibyte(num) ((uint32_t)*(((char *)&(num)) + 1)) + +#define AL_MaxVolume 127 +#define AL_DefaultChannelVolume 90 +#define AL_DefaultPitchBendRange 200 +#define AL_VoiceNotFound -1 + +#define ADLIB_PORT 0x388 + +/* Number of slots for the voices on the chip */ +#define AL_NumChipSlots 18 + +#define NUMADLIBVOICES 9 +#define NUMADLIBCHANNELS 16 + +#define NOTE_ON 0x2000 /* Used to turn note on or toggle note */ +#define NOTE_OFF 0x0000 + +#define MAX_VELOCITY 0x7f +#define MAX_OCTAVE 7 +#define MAX_NOTE (MAX_OCTAVE * 12 + 11) +#define FINETUNE_MAX 31 +#define FINETUNE_RANGE (FINETUNE_MAX + 1) + +#define PITCHBEND_CENTER 1638400 + +#define MIDI_VOLUME 7 +#define MIDI_PAN 10 +#define MIDI_DETUNE 94 +#define MIDI_ALL_NOTES_OFF 0x7B +#define MIDI_RESET_ALL_CONTROLLERS 0x79 +#define MIDI_RPN_MSB 100 +#define MIDI_RPN_LSB 101 +#define MIDI_DATAENTRY_MSB 6 +#define MIDI_DATAENTRY_LSB 38 +#define MIDI_PITCHBEND_RPN 0 + +/* Definition of octave information to be ORed onto F-Number */ + +enum octaves +{ + OCTAVE_0 = 0x0000, + OCTAVE_1 = 0x0400, + OCTAVE_2 = 0x0800, + OCTAVE_3 = 0x0C00, + OCTAVE_4 = 0x1000, + OCTAVE_5 = 0x1400, + OCTAVE_6 = 0x1800, + OCTAVE_7 = 0x1C00 +}; + +typedef struct AdLibVoice +{ + struct AdLibVoice *next; + struct AdLibVoice *prev; + + uint32_t num; + uint32_t key; + uint32_t velocity; + uint32_t channel; + uint32_t pitchleft; + uint32_t pitchright; + int timbre; + int port; + uint32_t status; +} AdLibVoice; + +typedef struct +{ + AdLibVoice *start; + AdLibVoice *end; +} AdLibVoiceList; + +typedef struct +{ + AdLibVoiceList Voices; + + int Timbre; + int Pitchbend; + int KeyOffset; + uint32_t KeyDetune; + uint32_t Volume; + uint32_t EffectiveVolume; + int Pan; + int Detune; + uint32_t RPN; + int16_t PitchBendRange; + int16_t PitchBendSemiTones; + int16_t PitchBendHundreds; +} AdLibChannel; + +static int AL_Init(int rate); +static void AL_NoteOff(int channel, int key, int velocity); +static void AL_NoteOn(int channel, int key, int vel); +static void AL_ControlChange(int channel, int type, int data); +static void AL_ProgramChange(int channel, int patch); +static void AL_SetPitchBend(int channel, int lsb, int msb); + +#endif diff --git a/source/audiolib/src/_oplmidi.h b/source/audiolib/src/_oplmidi.h new file mode 100644 index 000000000..20cde2e67 --- /dev/null +++ b/source/audiolib/src/_oplmidi.h @@ -0,0 +1,151 @@ +//------------------------------------------------------------------------- +/* +Copyright (C) 2010-2019 EDuke32 developers and contributors +Copyright (C) 2019 Nuke.YKT + +This file is part of NBlood. + +NBlood is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License version 2 +as published by the Free Software Foundation. + +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 ___MIDI_H +#define ___MIDI_H +#include "compat.h" + +namespace OPLMusic { +#define RELATIVE_BEAT( measure, beat, tick ) \ + ( ( tick ) + ( ( beat ) << 9 ) + ( ( measure ) << 16 ) ) + +//Bobby Prince thinks this may be 100 +//#define GENMIDI_DefaultVolume 100 +#define GENMIDI_DefaultVolume 90 + +#define MAX_FORMAT 1 + +#define NUM_MIDI_CHANNELS 16 + +#define TIME_PRECISION 16 + +#define MIDI_HEADER_SIGNATURE 0x6468544d // "MThd" +#define MIDI_TRACK_SIGNATURE 0x6b72544d // "MTrk" + +#define MIDI_VOLUME 7 +#define MIDI_PAN 10 +#define MIDI_DETUNE 94 +#define MIDI_RHYTHM_CHANNEL 9 +#define MIDI_RPN_MSB 100 +#define MIDI_RPN_LSB 101 +#define MIDI_DATAENTRY_MSB 6 +#define MIDI_DATAENTRY_LSB 38 +#define MIDI_PITCHBEND_MSB 0 +#define MIDI_PITCHBEND_LSB 0 +#define MIDI_RUNNING_STATUS 0x80 +#define MIDI_NOTE_OFF 0x8 +#define MIDI_NOTE_ON 0x9 +#define MIDI_POLY_AFTER_TCH 0xA +#define MIDI_CONTROL_CHANGE 0xB +#define MIDI_PROGRAM_CHANGE 0xC +#define MIDI_AFTER_TOUCH 0xD +#define MIDI_PITCH_BEND 0xE +#define MIDI_SPECIAL 0xF +#define MIDI_SYSEX 0xF0 +#define MIDI_SYSEX_CONTINUE 0xF7 +#define MIDI_META_EVENT 0xFF +#define MIDI_END_OF_TRACK 0x2F +#define MIDI_TEMPO_CHANGE 0x51 +#define MIDI_TIME_SIGNATURE 0x58 +#define MIDI_RESET_ALL_CONTROLLERS 0x79 +#define MIDI_ALL_NOTES_OFF 0x7b +#define MIDI_MONO_MODE_ON 0x7E +#define MIDI_SYSTEM_RESET 0xFF + +#define GET_NEXT_EVENT( track, data ) do { \ + ( data ) = *( track )->pos; \ + ( track )->pos += 1; \ +} while (0) + +#define GET_MIDI_CHANNEL( event ) ( ( event ) & 0xf ) +#define GET_MIDI_COMMAND( event ) ( ( event ) >> 4 ) + +#define EMIDI_INFINITE -1 +#define EMIDI_END_LOOP_VALUE 127 +#define EMIDI_ALL_CARDS 127 +#define EMIDI_INCLUDE_TRACK 110 +#define EMIDI_EXCLUDE_TRACK 111 +#define EMIDI_PROGRAM_CHANGE 112 +#define EMIDI_VOLUME_CHANGE 113 +#define EMIDI_CONTEXT_START 114 +#define EMIDI_CONTEXT_END 115 +#define EMIDI_LOOP_START 116 +#define EMIDI_LOOP_END 117 +#define EMIDI_SONG_LOOP_START 118 +#define EMIDI_SONG_LOOP_END 119 + +#define EMIDI_GeneralMIDI 0 +#define EMIDI_SoundBlaster 4 + +#define EMIDI_AffectsCurrentCard(c, type) (((c) == EMIDI_ALL_CARDS) || ((c) == (type))) +#define EMIDI_NUM_CONTEXTS 7 + +typedef struct +{ + char *pos; + char *loopstart; + int16_t loopcount; + int16_t RunningStatus; + unsigned time; + int32_t FPSecondsPerTick; + int16_t tick; + int16_t beat; + int16_t measure; + int16_t BeatsPerMeasure; + int16_t TicksPerBeat; + int16_t TimeBase; + int32_t delay; + int16_t active; +} songcontext; + +typedef struct +{ + char *start; + char *pos; + + int32_t delay; + int16_t active; + int16_t RunningStatus; + + int16_t currentcontext; + songcontext context[EMIDI_NUM_CONTEXTS]; + + char EMIDI_IncludeTrack; + char EMIDI_ProgramChange; + char EMIDI_VolumeChange; +} track; + +static int32_t _MIDI_ReadNumber(void *from, size_t size); +static int32_t _MIDI_ReadDelta(track *ptr); +static void _MIDI_ResetTracks(void); +static void _MIDI_AdvanceTick(void); +static void _MIDI_MetaEvent(track *Track); +static void _MIDI_SysEx(track *Track); +static int32_t _MIDI_InterpretControllerInfo(track *Track, int32_t TimeSet, int32_t channel, int32_t c1, int32_t c2); +static int32_t _MIDI_SendControlChange(int32_t channel, int32_t c1, int32_t c2); +static void _MIDI_SetChannelVolume(int32_t channel, int32_t volume); +static void _MIDI_SendChannelVolumes(void); +static void _MIDI_InitEMIDI(void); + +} +#endif diff --git a/source/audiolib/src/driver_sdl.cpp b/source/audiolib/src/driver_sdl.cpp index 5f197bcd9..c1a6a2a9b 100644 --- a/source/audiolib/src/driver_sdl.cpp +++ b/source/audiolib/src/driver_sdl.cpp @@ -212,9 +212,9 @@ int SDLDrv_PCM_Init(int *mixrate, int *numchannels, void * initdata) if (actual.freq == 0 || actual.channels == 0) { // hack for when SDL said it opened the audio, but clearly didn't SDL_CloseAudio(); - ErrorCode = SDLErr_OpenAudio; - return SDLErr_Error; - } + ErrorCode = SDLErr_OpenAudio; + return SDLErr_Error; + } #endif err = 0; diff --git a/source/audiolib/src/multivoc.cpp b/source/audiolib/src/multivoc.cpp index e01f6b3cd..caa99bd19 100644 --- a/source/audiolib/src/multivoc.cpp +++ b/source/audiolib/src/multivoc.cpp @@ -98,9 +98,7 @@ static int MV_MixMusic = FALSE; static bool MV_Mix(VoiceNode * const voice, int const buffer) { - /* cheap fix for a crash under 64-bit linux */ - /* v v v v */ - if (voice->length == 0 && (voice->GetSound == NULL || voice->GetSound(voice) != KeepPlaying)) + if (voice->length == 0 && voice->GetSound(voice) != KeepPlaying) return false; float const gv = MV_GlobalVolume; @@ -288,7 +286,7 @@ static VoiceNode *MV_GetVoice(int handle) { if (handle < MV_MINVOICEHANDLE || handle > MV_MaxVoices) { - MV_Printf("MV_GetVoice(): bad handle (%d)!\n", handle); + MV_Printf("MV_GetVoice(): bad handle (%d)!\n", handle); return nullptr; } diff --git a/source/audiolib/src/opl3.cpp b/source/audiolib/src/opl3.cpp new file mode 100644 index 000000000..0efea236c --- /dev/null +++ b/source/audiolib/src/opl3.cpp @@ -0,0 +1,1398 @@ +//------------------------------------------------------------------------- +/* +Copyright (C) 2013-2019 Nuke.YKT + +This file is part of NBlood. + +NBlood is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License version 2 +as published by the Free Software Foundation. + +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. +*/ +//------------------------------------------------------------------------- +// +// Nuked OPL3 emulator. +// Thanks: +// MAME Development Team(Jarek Burczynski, Tatsuyuki Satoh): +// Feedback and Rhythm part calculation information. +// forums.submarine.org.uk(carbon14, opl3): +// Tremolo and phase generator calculation information. +// OPLx decapsulated(Matthew Gambrell, Olli Niemitalo): +// OPL2 ROMs. +// siliconpr0n.org(John McMaster, digshadow): +// YMF262 and VRC VII decaps and die shots. +// +// version: 1.8, with stereo extension +// + +#include +#include +#include +#define _USE_MATH_DEFINES +#include +#include "opl3.h" + +#define RSM_FRAC 10 + +// Channel types + +enum { + ch_2op = 0, + ch_4op = 1, + ch_4op2 = 2, + ch_drum = 3 +}; + +// Envelope key types + +enum { + egk_norm = 0x01, + egk_drum = 0x02 +}; + + +// +// logsin table +// + +static const Bit16u logsinrom[256] = { + 0x859, 0x6c3, 0x607, 0x58b, 0x52e, 0x4e4, 0x4a6, 0x471, + 0x443, 0x41a, 0x3f5, 0x3d3, 0x3b5, 0x398, 0x37e, 0x365, + 0x34e, 0x339, 0x324, 0x311, 0x2ff, 0x2ed, 0x2dc, 0x2cd, + 0x2bd, 0x2af, 0x2a0, 0x293, 0x286, 0x279, 0x26d, 0x261, + 0x256, 0x24b, 0x240, 0x236, 0x22c, 0x222, 0x218, 0x20f, + 0x206, 0x1fd, 0x1f5, 0x1ec, 0x1e4, 0x1dc, 0x1d4, 0x1cd, + 0x1c5, 0x1be, 0x1b7, 0x1b0, 0x1a9, 0x1a2, 0x19b, 0x195, + 0x18f, 0x188, 0x182, 0x17c, 0x177, 0x171, 0x16b, 0x166, + 0x160, 0x15b, 0x155, 0x150, 0x14b, 0x146, 0x141, 0x13c, + 0x137, 0x133, 0x12e, 0x129, 0x125, 0x121, 0x11c, 0x118, + 0x114, 0x10f, 0x10b, 0x107, 0x103, 0x0ff, 0x0fb, 0x0f8, + 0x0f4, 0x0f0, 0x0ec, 0x0e9, 0x0e5, 0x0e2, 0x0de, 0x0db, + 0x0d7, 0x0d4, 0x0d1, 0x0cd, 0x0ca, 0x0c7, 0x0c4, 0x0c1, + 0x0be, 0x0bb, 0x0b8, 0x0b5, 0x0b2, 0x0af, 0x0ac, 0x0a9, + 0x0a7, 0x0a4, 0x0a1, 0x09f, 0x09c, 0x099, 0x097, 0x094, + 0x092, 0x08f, 0x08d, 0x08a, 0x088, 0x086, 0x083, 0x081, + 0x07f, 0x07d, 0x07a, 0x078, 0x076, 0x074, 0x072, 0x070, + 0x06e, 0x06c, 0x06a, 0x068, 0x066, 0x064, 0x062, 0x060, + 0x05e, 0x05c, 0x05b, 0x059, 0x057, 0x055, 0x053, 0x052, + 0x050, 0x04e, 0x04d, 0x04b, 0x04a, 0x048, 0x046, 0x045, + 0x043, 0x042, 0x040, 0x03f, 0x03e, 0x03c, 0x03b, 0x039, + 0x038, 0x037, 0x035, 0x034, 0x033, 0x031, 0x030, 0x02f, + 0x02e, 0x02d, 0x02b, 0x02a, 0x029, 0x028, 0x027, 0x026, + 0x025, 0x024, 0x023, 0x022, 0x021, 0x020, 0x01f, 0x01e, + 0x01d, 0x01c, 0x01b, 0x01a, 0x019, 0x018, 0x017, 0x017, + 0x016, 0x015, 0x014, 0x014, 0x013, 0x012, 0x011, 0x011, + 0x010, 0x00f, 0x00f, 0x00e, 0x00d, 0x00d, 0x00c, 0x00c, + 0x00b, 0x00a, 0x00a, 0x009, 0x009, 0x008, 0x008, 0x007, + 0x007, 0x007, 0x006, 0x006, 0x005, 0x005, 0x005, 0x004, + 0x004, 0x004, 0x003, 0x003, 0x003, 0x002, 0x002, 0x002, + 0x002, 0x001, 0x001, 0x001, 0x001, 0x001, 0x001, 0x001, + 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000 +}; + +// +// exp table +// + +static const Bit16u exprom[256] = { + 0x7fa, 0x7f5, 0x7ef, 0x7ea, 0x7e4, 0x7df, 0x7da, 0x7d4, + 0x7cf, 0x7c9, 0x7c4, 0x7bf, 0x7b9, 0x7b4, 0x7ae, 0x7a9, + 0x7a4, 0x79f, 0x799, 0x794, 0x78f, 0x78a, 0x784, 0x77f, + 0x77a, 0x775, 0x770, 0x76a, 0x765, 0x760, 0x75b, 0x756, + 0x751, 0x74c, 0x747, 0x742, 0x73d, 0x738, 0x733, 0x72e, + 0x729, 0x724, 0x71f, 0x71a, 0x715, 0x710, 0x70b, 0x706, + 0x702, 0x6fd, 0x6f8, 0x6f3, 0x6ee, 0x6e9, 0x6e5, 0x6e0, + 0x6db, 0x6d6, 0x6d2, 0x6cd, 0x6c8, 0x6c4, 0x6bf, 0x6ba, + 0x6b5, 0x6b1, 0x6ac, 0x6a8, 0x6a3, 0x69e, 0x69a, 0x695, + 0x691, 0x68c, 0x688, 0x683, 0x67f, 0x67a, 0x676, 0x671, + 0x66d, 0x668, 0x664, 0x65f, 0x65b, 0x657, 0x652, 0x64e, + 0x649, 0x645, 0x641, 0x63c, 0x638, 0x634, 0x630, 0x62b, + 0x627, 0x623, 0x61e, 0x61a, 0x616, 0x612, 0x60e, 0x609, + 0x605, 0x601, 0x5fd, 0x5f9, 0x5f5, 0x5f0, 0x5ec, 0x5e8, + 0x5e4, 0x5e0, 0x5dc, 0x5d8, 0x5d4, 0x5d0, 0x5cc, 0x5c8, + 0x5c4, 0x5c0, 0x5bc, 0x5b8, 0x5b4, 0x5b0, 0x5ac, 0x5a8, + 0x5a4, 0x5a0, 0x59c, 0x599, 0x595, 0x591, 0x58d, 0x589, + 0x585, 0x581, 0x57e, 0x57a, 0x576, 0x572, 0x56f, 0x56b, + 0x567, 0x563, 0x560, 0x55c, 0x558, 0x554, 0x551, 0x54d, + 0x549, 0x546, 0x542, 0x53e, 0x53b, 0x537, 0x534, 0x530, + 0x52c, 0x529, 0x525, 0x522, 0x51e, 0x51b, 0x517, 0x514, + 0x510, 0x50c, 0x509, 0x506, 0x502, 0x4ff, 0x4fb, 0x4f8, + 0x4f4, 0x4f1, 0x4ed, 0x4ea, 0x4e7, 0x4e3, 0x4e0, 0x4dc, + 0x4d9, 0x4d6, 0x4d2, 0x4cf, 0x4cc, 0x4c8, 0x4c5, 0x4c2, + 0x4be, 0x4bb, 0x4b8, 0x4b5, 0x4b1, 0x4ae, 0x4ab, 0x4a8, + 0x4a4, 0x4a1, 0x49e, 0x49b, 0x498, 0x494, 0x491, 0x48e, + 0x48b, 0x488, 0x485, 0x482, 0x47e, 0x47b, 0x478, 0x475, + 0x472, 0x46f, 0x46c, 0x469, 0x466, 0x463, 0x460, 0x45d, + 0x45a, 0x457, 0x454, 0x451, 0x44e, 0x44b, 0x448, 0x445, + 0x442, 0x43f, 0x43c, 0x439, 0x436, 0x433, 0x430, 0x42d, + 0x42a, 0x428, 0x425, 0x422, 0x41f, 0x41c, 0x419, 0x416, + 0x414, 0x411, 0x40e, 0x40b, 0x408, 0x406, 0x403, 0x400 +}; + +// +// freq mult table multiplied by 2 +// +// 1/2, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 12, 12, 15, 15 +// + +static const Bit8u mt[16] = { + 1, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 20, 24, 24, 30, 30 +}; + +// +// ksl table +// + +static const Bit8u kslrom[16] = { + 0, 32, 40, 45, 48, 51, 53, 55, 56, 58, 59, 60, 61, 62, 63, 64 +}; + +static const Bit8u kslshift[4] = { + 8, 1, 2, 0 +}; + +// +// envelope generator constants +// + +static const Bit8u eg_incstep[4][4] = { + { 0, 0, 0, 0 }, + { 1, 0, 0, 0 }, + { 1, 0, 1, 0 }, + { 1, 1, 1, 0 } +}; + +// +// address decoding +// + +static const Bit8s ad_slot[0x20] = { + 0, 1, 2, 3, 4, 5, -1, -1, 6, 7, 8, 9, 10, 11, -1, -1, + 12, 13, 14, 15, 16, 17, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 +}; + +static const Bit8u ch_slot[18] = { + 0, 1, 2, 6, 7, 8, 12, 13, 14, 18, 19, 20, 24, 25, 26, 30, 31, 32 +}; + +static Bit32s panpot_lut[256]; +static Bit8u panpot_lut_build = 0; + +// +// Envelope generator +// + +typedef Bit16s(*envelope_sinfunc)(Bit16u phase, Bit16u envelope); +typedef void(*envelope_genfunc)(opl3_slot *slott); + +static Bit16s OPL3_EnvelopeCalcExp(Bit32u level) +{ + if (level > 0x1fff) + { + level = 0x1fff; + } + return (exprom[level & 0xff] << 1) >> (level >> 8); +} + +static Bit16s OPL3_EnvelopeCalcSin0(Bit16u phase, Bit16u envelope) +{ + Bit16u out = 0; + Bit16u neg = 0; + phase &= 0x3ff; + if (phase & 0x200) + { + neg = 0xffff; + } + if (phase & 0x100) + { + out = logsinrom[(phase & 0xff) ^ 0xff]; + } + else + { + out = logsinrom[phase & 0xff]; + } + return OPL3_EnvelopeCalcExp(out + (envelope << 3)) ^ neg; +} + +static Bit16s OPL3_EnvelopeCalcSin1(Bit16u phase, Bit16u envelope) +{ + Bit16u out = 0; + phase &= 0x3ff; + if (phase & 0x200) + { + out = 0x1000; + } + else if (phase & 0x100) + { + out = logsinrom[(phase & 0xff) ^ 0xff]; + } + else + { + out = logsinrom[phase & 0xff]; + } + return OPL3_EnvelopeCalcExp(out + (envelope << 3)); +} + +static Bit16s OPL3_EnvelopeCalcSin2(Bit16u phase, Bit16u envelope) +{ + Bit16u out = 0; + phase &= 0x3ff; + if (phase & 0x100) + { + out = logsinrom[(phase & 0xff) ^ 0xff]; + } + else + { + out = logsinrom[phase & 0xff]; + } + return OPL3_EnvelopeCalcExp(out + (envelope << 3)); +} + +static Bit16s OPL3_EnvelopeCalcSin3(Bit16u phase, Bit16u envelope) +{ + Bit16u out = 0; + phase &= 0x3ff; + if (phase & 0x100) + { + out = 0x1000; + } + else + { + out = logsinrom[phase & 0xff]; + } + return OPL3_EnvelopeCalcExp(out + (envelope << 3)); +} + +static Bit16s OPL3_EnvelopeCalcSin4(Bit16u phase, Bit16u envelope) +{ + Bit16u out = 0; + Bit16u neg = 0; + phase &= 0x3ff; + if ((phase & 0x300) == 0x100) + { + neg = 0xffff; + } + if (phase & 0x200) + { + out = 0x1000; + } + else if (phase & 0x80) + { + out = logsinrom[((phase ^ 0xff) << 1) & 0xff]; + } + else + { + out = logsinrom[(phase << 1) & 0xff]; + } + return OPL3_EnvelopeCalcExp(out + (envelope << 3)) ^ neg; +} + +static Bit16s OPL3_EnvelopeCalcSin5(Bit16u phase, Bit16u envelope) +{ + Bit16u out = 0; + phase &= 0x3ff; + if (phase & 0x200) + { + out = 0x1000; + } + else if (phase & 0x80) + { + out = logsinrom[((phase ^ 0xff) << 1) & 0xff]; + } + else + { + out = logsinrom[(phase << 1) & 0xff]; + } + return OPL3_EnvelopeCalcExp(out + (envelope << 3)); +} + +static Bit16s OPL3_EnvelopeCalcSin6(Bit16u phase, Bit16u envelope) +{ + Bit16u neg = 0; + phase &= 0x3ff; + if (phase & 0x200) + { + neg = 0xffff; + } + return OPL3_EnvelopeCalcExp(envelope << 3) ^ neg; +} + +static Bit16s OPL3_EnvelopeCalcSin7(Bit16u phase, Bit16u envelope) +{ + Bit16u out = 0; + Bit16u neg = 0; + phase &= 0x3ff; + if (phase & 0x200) + { + neg = 0xffff; + phase = (phase & 0x1ff) ^ 0x1ff; + } + out = phase << 3; + return OPL3_EnvelopeCalcExp(out + (envelope << 3)) ^ neg; +} + +static const envelope_sinfunc envelope_sin[8] = { + OPL3_EnvelopeCalcSin0, + OPL3_EnvelopeCalcSin1, + OPL3_EnvelopeCalcSin2, + OPL3_EnvelopeCalcSin3, + OPL3_EnvelopeCalcSin4, + OPL3_EnvelopeCalcSin5, + OPL3_EnvelopeCalcSin6, + OPL3_EnvelopeCalcSin7 +}; + +enum envelope_gen_num +{ + envelope_gen_num_attack = 0, + envelope_gen_num_decay = 1, + envelope_gen_num_sustain = 2, + envelope_gen_num_release = 3 +}; + +static void OPL3_EnvelopeUpdateKSL(opl3_slot *slot) +{ + Bit16s ksl = (kslrom[slot->channel->f_num >> 6] << 2) + - ((0x08 - slot->channel->block) << 5); + if (ksl < 0) + { + ksl = 0; + } + slot->eg_ksl = (Bit8u)ksl; +} + +static void OPL3_EnvelopeCalc(opl3_slot *slot) +{ + Bit8u nonzero; + Bit8u rate; + Bit8u rate_hi; + Bit8u rate_lo; + Bit8u reg_rate = 0; + Bit8u ks; + Bit8u eg_shift, shift; + Bit16u eg_rout; + Bit16s eg_inc; + Bit8u eg_off; + Bit8u reset = 0; + slot->eg_out = slot->eg_rout + (slot->reg_tl << 2) + + (slot->eg_ksl >> kslshift[slot->reg_ksl]) + *slot->trem; + if (slot->key && slot->eg_gen == envelope_gen_num_release) + { + reset = 1; + reg_rate = slot->reg_ar; + } + else + { + switch (slot->eg_gen) + { + case envelope_gen_num_attack: + reg_rate = slot->reg_ar; + break; + case envelope_gen_num_decay: + reg_rate = slot->reg_dr; + break; + case envelope_gen_num_sustain: + if (!slot->reg_type) + { + reg_rate = slot->reg_rr; + } + break; + case envelope_gen_num_release: + reg_rate = slot->reg_rr; + break; + } + } + slot->pg_reset = reset; + ks = slot->channel->ksv >> ((slot->reg_ksr ^ 1) << 1); + nonzero = (reg_rate != 0); + rate = ks + (reg_rate << 2); + rate_hi = rate >> 2; + rate_lo = rate & 0x03; + if (rate_hi & 0x10) + { + rate_hi = 0x0f; + } + eg_shift = rate_hi + slot->chip->eg_add; + shift = 0; + if (nonzero) + { + if (rate_hi < 12) + { + if (slot->chip->eg_state) + { + switch (eg_shift) + { + case 12: + shift = 1; + break; + case 13: + shift = (rate_lo >> 1) & 0x01; + break; + case 14: + shift = rate_lo & 0x01; + break; + default: + break; + } + } + } + else + { + shift = (rate_hi & 0x03) + eg_incstep[rate_lo][slot->chip->timer & 0x03]; + if (shift & 0x04) + { + shift = 0x03; + } + if (!shift) + { + shift = slot->chip->eg_state; + } + } + } + eg_rout = slot->eg_rout; + eg_inc = 0; + eg_off = 0; + // Instant attack + if (reset && rate_hi == 0x0f) + { + eg_rout = 0x00; + } + // Envelope off + if ((slot->eg_rout & 0x1f8) == 0x1f8) + { + eg_off = 1; + } + if (slot->eg_gen != envelope_gen_num_attack && !reset && eg_off) + { + eg_rout = 0x1ff; + } + switch (slot->eg_gen) + { + case envelope_gen_num_attack: + if (!slot->eg_rout) + { + slot->eg_gen = envelope_gen_num_decay; + } + else if (slot->key && shift > 0 && rate_hi != 0x0f) + { + eg_inc = ((~slot->eg_rout) << shift) >> 4; + } + break; + case envelope_gen_num_decay: + if ((slot->eg_rout >> 4) == slot->reg_sl) + { + slot->eg_gen = envelope_gen_num_sustain; + } + else if (!eg_off && !reset && shift > 0) + { + eg_inc = 1 << (shift - 1); + } + break; + case envelope_gen_num_sustain: + case envelope_gen_num_release: + if (!eg_off && !reset && shift > 0) + { + eg_inc = 1 << (shift - 1); + } + break; + } + slot->eg_rout = (eg_rout + eg_inc) & 0x1ff; + // Key off + if (reset) + { + slot->eg_gen = envelope_gen_num_attack; + } + if (!slot->key) + { + slot->eg_gen = envelope_gen_num_release; + } +} + +static void OPL3_EnvelopeKeyOn(opl3_slot *slot, Bit8u type) +{ + slot->key |= type; +} + +static void OPL3_EnvelopeKeyOff(opl3_slot *slot, Bit8u type) +{ + slot->key &= ~type; +} + +// +// Phase Generator +// + +static void OPL3_PhaseGenerate(opl3_slot *slot) +{ + opl3_chip *chip; + Bit16u f_num; + Bit32u basefreq; + Bit8u rm_xor, n_bit; + Bit32u noise; + Bit16u phase; + + chip = slot->chip; + f_num = slot->channel->f_num; + if (slot->reg_vib) + { + Bit8s range; + Bit8u vibpos; + + range = (f_num >> 7) & 7; + vibpos = slot->chip->vibpos; + + if (!(vibpos & 3)) + { + range = 0; + } + else if (vibpos & 1) + { + range >>= 1; + } + range >>= slot->chip->vibshift; + + if (vibpos & 4) + { + range = -range; + } + f_num += range; + } + basefreq = (f_num << slot->channel->block) >> 1; + phase = (Bit16u)(slot->pg_phase >> 9); + if (slot->pg_reset) + { + slot->pg_phase = 0; + } + slot->pg_phase += (basefreq * mt[slot->reg_mult]) >> 1; + // Rhythm mode + noise = chip->noise; + slot->pg_phase_out = phase; + if (slot->slot_num == 13) // hh + { + chip->rm_hh_bit2 = (phase >> 2) & 1; + chip->rm_hh_bit3 = (phase >> 3) & 1; + chip->rm_hh_bit7 = (phase >> 7) & 1; + chip->rm_hh_bit8 = (phase >> 8) & 1; + } + if (slot->slot_num == 17 && (chip->rhy & 0x20)) // tc + { + chip->rm_tc_bit3 = (phase >> 3) & 1; + chip->rm_tc_bit5 = (phase >> 5) & 1; + } + if (chip->rhy & 0x20) + { + rm_xor = (chip->rm_hh_bit2 ^ chip->rm_hh_bit7) + | (chip->rm_hh_bit3 ^ chip->rm_tc_bit5) + | (chip->rm_tc_bit3 ^ chip->rm_tc_bit5); + switch (slot->slot_num) + { + case 13: // hh + slot->pg_phase_out = rm_xor << 9; + if (rm_xor ^ (noise & 1)) + { + slot->pg_phase_out |= 0xd0; + } + else + { + slot->pg_phase_out |= 0x34; + } + break; + case 16: // sd + slot->pg_phase_out = (chip->rm_hh_bit8 << 9) + | ((chip->rm_hh_bit8 ^ (noise & 1)) << 8); + break; + case 17: // tc + slot->pg_phase_out = (rm_xor << 9) | 0x80; + break; + default: + break; + } + } + n_bit = ((noise >> 14) ^ noise) & 0x01; + chip->noise = (noise >> 1) | (n_bit << 22); +} + +// +// Slot +// + +static void OPL3_SlotWrite20(opl3_slot *slot, Bit8u data) +{ + if ((data >> 7) & 0x01) + { + slot->trem = &slot->chip->tremolo; + } + else + { + slot->trem = (Bit8u*)&slot->chip->zeromod; + } + slot->reg_vib = (data >> 6) & 0x01; + slot->reg_type = (data >> 5) & 0x01; + slot->reg_ksr = (data >> 4) & 0x01; + slot->reg_mult = data & 0x0f; +} + +static void OPL3_SlotWrite40(opl3_slot *slot, Bit8u data) +{ + slot->reg_ksl = (data >> 6) & 0x03; + slot->reg_tl = data & 0x3f; + OPL3_EnvelopeUpdateKSL(slot); +} + +static void OPL3_SlotWrite60(opl3_slot *slot, Bit8u data) +{ + slot->reg_ar = (data >> 4) & 0x0f; + slot->reg_dr = data & 0x0f; +} + +static void OPL3_SlotWrite80(opl3_slot *slot, Bit8u data) +{ + slot->reg_sl = (data >> 4) & 0x0f; + if (slot->reg_sl == 0x0f) + { + slot->reg_sl = 0x1f; + } + slot->reg_rr = data & 0x0f; +} + +static void OPL3_SlotWriteE0(opl3_slot *slot, Bit8u data) +{ + slot->reg_wf = data & 0x07; + if (slot->chip->newm == 0x00) + { + slot->reg_wf &= 0x03; + } +} + +static void OPL3_SlotGenerate(opl3_slot *slot) +{ + slot->out = envelope_sin[slot->reg_wf](slot->pg_phase_out + *slot->mod, slot->eg_out); +} + +static void OPL3_SlotCalcFB(opl3_slot *slot) +{ + if (slot->channel->fb != 0x00) + { + slot->fbmod = (slot->prout + slot->out) >> (0x09 - slot->channel->fb); + } + else + { + slot->fbmod = 0; + } + slot->prout = slot->out; +} + +// +// Channel +// + +static void OPL3_ChannelSetupAlg(opl3_channel *channel); + +static void OPL3_ChannelUpdateRhythm(opl3_chip *chip, Bit8u data) +{ + opl3_channel *channel6; + opl3_channel *channel7; + opl3_channel *channel8; + Bit8u chnum; + + chip->rhy = data & 0x3f; + if (chip->rhy & 0x20) + { + channel6 = &chip->channel[6]; + channel7 = &chip->channel[7]; + channel8 = &chip->channel[8]; + channel6->out[0] = &channel6->slots[1]->out; + channel6->out[1] = &channel6->slots[1]->out; + channel6->out[2] = &chip->zeromod; + channel6->out[3] = &chip->zeromod; + channel7->out[0] = &channel7->slots[0]->out; + channel7->out[1] = &channel7->slots[0]->out; + channel7->out[2] = &channel7->slots[1]->out; + channel7->out[3] = &channel7->slots[1]->out; + channel8->out[0] = &channel8->slots[0]->out; + channel8->out[1] = &channel8->slots[0]->out; + channel8->out[2] = &channel8->slots[1]->out; + channel8->out[3] = &channel8->slots[1]->out; + for (chnum = 6; chnum < 9; chnum++) + { + chip->channel[chnum].chtype = ch_drum; + } + OPL3_ChannelSetupAlg(channel6); + OPL3_ChannelSetupAlg(channel7); + OPL3_ChannelSetupAlg(channel8); + //hh + if (chip->rhy & 0x01) + { + OPL3_EnvelopeKeyOn(channel7->slots[0], egk_drum); + } + else + { + OPL3_EnvelopeKeyOff(channel7->slots[0], egk_drum); + } + //tc + if (chip->rhy & 0x02) + { + OPL3_EnvelopeKeyOn(channel8->slots[1], egk_drum); + } + else + { + OPL3_EnvelopeKeyOff(channel8->slots[1], egk_drum); + } + //tom + if (chip->rhy & 0x04) + { + OPL3_EnvelopeKeyOn(channel8->slots[0], egk_drum); + } + else + { + OPL3_EnvelopeKeyOff(channel8->slots[0], egk_drum); + } + //sd + if (chip->rhy & 0x08) + { + OPL3_EnvelopeKeyOn(channel7->slots[1], egk_drum); + } + else + { + OPL3_EnvelopeKeyOff(channel7->slots[1], egk_drum); + } + //bd + if (chip->rhy & 0x10) + { + OPL3_EnvelopeKeyOn(channel6->slots[0], egk_drum); + OPL3_EnvelopeKeyOn(channel6->slots[1], egk_drum); + } + else + { + OPL3_EnvelopeKeyOff(channel6->slots[0], egk_drum); + OPL3_EnvelopeKeyOff(channel6->slots[1], egk_drum); + } + } + else + { + for (chnum = 6; chnum < 9; chnum++) + { + chip->channel[chnum].chtype = ch_2op; + OPL3_ChannelSetupAlg(&chip->channel[chnum]); + OPL3_EnvelopeKeyOff(chip->channel[chnum].slots[0], egk_drum); + OPL3_EnvelopeKeyOff(chip->channel[chnum].slots[1], egk_drum); + } + } +} + +static void OPL3_ChannelWriteA0(opl3_channel *channel, Bit8u data) +{ + if (channel->chip->newm && channel->chtype == ch_4op2) + { + return; + } + channel->f_num = (channel->f_num & 0x300) | data; + channel->ksv = (channel->block << 1) + | ((channel->f_num >> (0x09 - channel->chip->nts)) & 0x01); + OPL3_EnvelopeUpdateKSL(channel->slots[0]); + OPL3_EnvelopeUpdateKSL(channel->slots[1]); + if (channel->chip->newm && channel->chtype == ch_4op) + { + channel->pair->f_num = channel->f_num; + channel->pair->ksv = channel->ksv; + OPL3_EnvelopeUpdateKSL(channel->pair->slots[0]); + OPL3_EnvelopeUpdateKSL(channel->pair->slots[1]); + } +} + +static void OPL3_ChannelWriteB0(opl3_channel *channel, Bit8u data) +{ + if (channel->chip->newm && channel->chtype == ch_4op2) + { + return; + } + channel->f_num = (channel->f_num & 0xff) | ((data & 0x03) << 8); + channel->block = (data >> 2) & 0x07; + channel->ksv = (channel->block << 1) + | ((channel->f_num >> (0x09 - channel->chip->nts)) & 0x01); + OPL3_EnvelopeUpdateKSL(channel->slots[0]); + OPL3_EnvelopeUpdateKSL(channel->slots[1]); + if (channel->chip->newm && channel->chtype == ch_4op) + { + channel->pair->f_num = channel->f_num; + channel->pair->block = channel->block; + channel->pair->ksv = channel->ksv; + OPL3_EnvelopeUpdateKSL(channel->pair->slots[0]); + OPL3_EnvelopeUpdateKSL(channel->pair->slots[1]); + } +} + +static void OPL3_ChannelSetupAlg(opl3_channel *channel) +{ + if (channel->chtype == ch_drum) + { + if (channel->ch_num == 7 || channel->ch_num == 8) + { + channel->slots[0]->mod = &channel->chip->zeromod; + channel->slots[1]->mod = &channel->chip->zeromod; + return; + } + switch (channel->alg & 0x01) + { + case 0x00: + channel->slots[0]->mod = &channel->slots[0]->fbmod; + channel->slots[1]->mod = &channel->slots[0]->out; + break; + case 0x01: + channel->slots[0]->mod = &channel->slots[0]->fbmod; + channel->slots[1]->mod = &channel->chip->zeromod; + break; + } + return; + } + if (channel->alg & 0x08) + { + return; + } + if (channel->alg & 0x04) + { + channel->pair->out[0] = &channel->chip->zeromod; + channel->pair->out[1] = &channel->chip->zeromod; + channel->pair->out[2] = &channel->chip->zeromod; + channel->pair->out[3] = &channel->chip->zeromod; + switch (channel->alg & 0x03) + { + case 0x00: + channel->pair->slots[0]->mod = &channel->pair->slots[0]->fbmod; + channel->pair->slots[1]->mod = &channel->pair->slots[0]->out; + channel->slots[0]->mod = &channel->pair->slots[1]->out; + channel->slots[1]->mod = &channel->slots[0]->out; + channel->out[0] = &channel->slots[1]->out; + channel->out[1] = &channel->chip->zeromod; + channel->out[2] = &channel->chip->zeromod; + channel->out[3] = &channel->chip->zeromod; + break; + case 0x01: + channel->pair->slots[0]->mod = &channel->pair->slots[0]->fbmod; + channel->pair->slots[1]->mod = &channel->pair->slots[0]->out; + channel->slots[0]->mod = &channel->chip->zeromod; + channel->slots[1]->mod = &channel->slots[0]->out; + channel->out[0] = &channel->pair->slots[1]->out; + channel->out[1] = &channel->slots[1]->out; + channel->out[2] = &channel->chip->zeromod; + channel->out[3] = &channel->chip->zeromod; + break; + case 0x02: + channel->pair->slots[0]->mod = &channel->pair->slots[0]->fbmod; + channel->pair->slots[1]->mod = &channel->chip->zeromod; + channel->slots[0]->mod = &channel->pair->slots[1]->out; + channel->slots[1]->mod = &channel->slots[0]->out; + channel->out[0] = &channel->pair->slots[0]->out; + channel->out[1] = &channel->slots[1]->out; + channel->out[2] = &channel->chip->zeromod; + channel->out[3] = &channel->chip->zeromod; + break; + case 0x03: + channel->pair->slots[0]->mod = &channel->pair->slots[0]->fbmod; + channel->pair->slots[1]->mod = &channel->chip->zeromod; + channel->slots[0]->mod = &channel->pair->slots[1]->out; + channel->slots[1]->mod = &channel->chip->zeromod; + channel->out[0] = &channel->pair->slots[0]->out; + channel->out[1] = &channel->slots[0]->out; + channel->out[2] = &channel->slots[1]->out; + channel->out[3] = &channel->chip->zeromod; + break; + } + } + else + { + switch (channel->alg & 0x01) + { + case 0x00: + channel->slots[0]->mod = &channel->slots[0]->fbmod; + channel->slots[1]->mod = &channel->slots[0]->out; + channel->out[0] = &channel->slots[1]->out; + channel->out[1] = &channel->chip->zeromod; + channel->out[2] = &channel->chip->zeromod; + channel->out[3] = &channel->chip->zeromod; + break; + case 0x01: + channel->slots[0]->mod = &channel->slots[0]->fbmod; + channel->slots[1]->mod = &channel->chip->zeromod; + channel->out[0] = &channel->slots[0]->out; + channel->out[1] = &channel->slots[1]->out; + channel->out[2] = &channel->chip->zeromod; + channel->out[3] = &channel->chip->zeromod; + break; + } + } +} + +static void OPL3_ChannelWriteC0(opl3_channel *channel, Bit8u data) +{ + channel->fb = (data & 0x0e) >> 1; + channel->con = data & 0x01; + channel->alg = channel->con; + if (channel->chip->newm) + { + if (channel->chtype == ch_4op) + { + channel->pair->alg = 0x04 | (channel->con << 1) | (channel->pair->con); + channel->alg = 0x08; + OPL3_ChannelSetupAlg(channel->pair); + } + else if (channel->chtype == ch_4op2) + { + channel->alg = 0x04 | (channel->pair->con << 1) | (channel->con); + channel->pair->alg = 0x08; + OPL3_ChannelSetupAlg(channel); + } + else + { + OPL3_ChannelSetupAlg(channel); + } + } + else + { + OPL3_ChannelSetupAlg(channel); + } + if (channel->chip->newm) + { + channel->cha = ((data >> 4) & 0x01) ? ~0 : 0; + channel->chb = ((data >> 5) & 0x01) ? ~0 : 0; + } + else + { + channel->cha = channel->chb = (Bit16u)~0; + } + if (!channel->chip->stereoext) + { + channel->leftpan = channel->cha << 16; + channel->rightpan = channel->chb << 16; + } +} + +static void OPL3_ChannelWriteD0(opl3_channel* channel, Bit8u data) +{ + if (channel->chip->stereoext) + { + channel->leftpan = panpot_lut[data ^ 0xff]; + channel->rightpan = panpot_lut[data]; + } +} + +static void OPL3_ChannelKeyOn(opl3_channel *channel) +{ + if (channel->chip->newm) + { + if (channel->chtype == ch_4op) + { + OPL3_EnvelopeKeyOn(channel->slots[0], egk_norm); + OPL3_EnvelopeKeyOn(channel->slots[1], egk_norm); + OPL3_EnvelopeKeyOn(channel->pair->slots[0], egk_norm); + OPL3_EnvelopeKeyOn(channel->pair->slots[1], egk_norm); + } + else if (channel->chtype == ch_2op || channel->chtype == ch_drum) + { + OPL3_EnvelopeKeyOn(channel->slots[0], egk_norm); + OPL3_EnvelopeKeyOn(channel->slots[1], egk_norm); + } + } + else + { + OPL3_EnvelopeKeyOn(channel->slots[0], egk_norm); + OPL3_EnvelopeKeyOn(channel->slots[1], egk_norm); + } +} + +static void OPL3_ChannelKeyOff(opl3_channel *channel) +{ + if (channel->chip->newm) + { + if (channel->chtype == ch_4op) + { + OPL3_EnvelopeKeyOff(channel->slots[0], egk_norm); + OPL3_EnvelopeKeyOff(channel->slots[1], egk_norm); + OPL3_EnvelopeKeyOff(channel->pair->slots[0], egk_norm); + OPL3_EnvelopeKeyOff(channel->pair->slots[1], egk_norm); + } + else if (channel->chtype == ch_2op || channel->chtype == ch_drum) + { + OPL3_EnvelopeKeyOff(channel->slots[0], egk_norm); + OPL3_EnvelopeKeyOff(channel->slots[1], egk_norm); + } + } + else + { + OPL3_EnvelopeKeyOff(channel->slots[0], egk_norm); + OPL3_EnvelopeKeyOff(channel->slots[1], egk_norm); + } +} + +static void OPL3_ChannelSet4Op(opl3_chip *chip, Bit8u data) +{ + Bit8u bit; + Bit8u chnum; + for (bit = 0; bit < 6; bit++) + { + chnum = bit; + if (bit >= 3) + { + chnum += 9 - 3; + } + if ((data >> bit) & 0x01) + { + chip->channel[chnum].chtype = ch_4op; + chip->channel[chnum + 3].chtype = ch_4op2; + } + else + { + chip->channel[chnum].chtype = ch_2op; + chip->channel[chnum + 3].chtype = ch_2op; + } + } +} + +static Bit16s OPL3_ClipSample(Bit32s sample) +{ + if (sample > 32767) + { + sample = 32767; + } + else if (sample < -32768) + { + sample = -32768; + } + return (Bit16s)sample; +} + +void OPL3_Generate(opl3_chip *chip, Bit16s *buf) +{ + Bit8u ii; + Bit8u jj; + Bit16s accm; + Bit8u shift = 0; + + buf[1] = OPL3_ClipSample(chip->mixbuff[1]); + + for (ii = 0; ii < 36; ii++) + { + OPL3_SlotCalcFB(&chip->slot[ii]); + OPL3_EnvelopeCalc(&chip->slot[ii]); + OPL3_PhaseGenerate(&chip->slot[ii]); + OPL3_SlotGenerate(&chip->slot[ii]); + } + + chip->mixbuff[0] = 0; + for (ii = 0; ii < 18; ii++) + { + accm = 0; + for (jj = 0; jj < 4; jj++) + { + accm += *chip->channel[ii].out[jj]; + } + chip->mixbuff[0] += (Bit16s)((accm * chip->channel[ii].leftpan) >> 16); + } + + buf[0] = OPL3_ClipSample(chip->mixbuff[0]); + + chip->mixbuff[1] = 0; + for (ii = 0; ii < 18; ii++) + { + accm = 0; + for (jj = 0; jj < 4; jj++) + { + accm += *chip->channel[ii].out[jj]; + } + chip->mixbuff[1] += (Bit16s)((accm * chip->channel[ii].rightpan) >> 16); + } + + if ((chip->timer & 0x3f) == 0x3f) + { + chip->tremolopos = (chip->tremolopos + 1) % 210; + } + if (chip->tremolopos < 105) + { + chip->tremolo = chip->tremolopos >> chip->tremoloshift; + } + else + { + chip->tremolo = (210 - chip->tremolopos) >> chip->tremoloshift; + } + + if ((chip->timer & 0x3ff) == 0x3ff) + { + chip->vibpos = (chip->vibpos + 1) & 7; + } + + chip->timer++; + + chip->eg_add = 0; + if (chip->eg_timer) + { + while (shift < 36 && ((chip->eg_timer >> shift) & 1) == 0) + { + shift++; + } + if (shift > 12) + { + chip->eg_add = 0; + } + else + { + chip->eg_add = shift + 1; + } + } + + if (chip->eg_timerrem || chip->eg_state) + { + if (chip->eg_timer == 0xfffffffff) + { + chip->eg_timer = 0; + chip->eg_timerrem = 1; + } + else + { + chip->eg_timer++; + chip->eg_timerrem = 0; + } + } + + chip->eg_state ^= 1; + + while (chip->writebuf[chip->writebuf_cur].time <= chip->writebuf_samplecnt) + { + if (!(chip->writebuf[chip->writebuf_cur].reg & 0x200)) + { + break; + } + chip->writebuf[chip->writebuf_cur].reg &= 0x1ff; + OPL3_WriteReg(chip, chip->writebuf[chip->writebuf_cur].reg, + chip->writebuf[chip->writebuf_cur].data); + chip->writebuf_cur = (chip->writebuf_cur + 1) % OPL_WRITEBUF_SIZE; + } + chip->writebuf_samplecnt++; +} + +void OPL3_GenerateResampled(opl3_chip *chip, Bit16s *buf) +{ + while (chip->samplecnt >= chip->rateratio) + { + chip->oldsamples[0] = chip->samples[0]; + chip->oldsamples[1] = chip->samples[1]; + OPL3_Generate(chip, chip->samples); + chip->samplecnt -= chip->rateratio; + } + buf[0] = (Bit16s)((chip->oldsamples[0] * (chip->rateratio - chip->samplecnt) + + chip->samples[0] * chip->samplecnt) / chip->rateratio); + buf[1] = (Bit16s)((chip->oldsamples[1] * (chip->rateratio - chip->samplecnt) + + chip->samples[1] * chip->samplecnt) / chip->rateratio); + chip->samplecnt += 1 << RSM_FRAC; +} + +void OPL3_Reset(opl3_chip *chip, Bit32u samplerate) +{ + Bit8u slotnum; + Bit8u channum; + + memset(chip, 0, sizeof(opl3_chip)); + for (slotnum = 0; slotnum < 36; slotnum++) + { + chip->slot[slotnum].chip = chip; + chip->slot[slotnum].mod = &chip->zeromod; + chip->slot[slotnum].eg_rout = 0x1ff; + chip->slot[slotnum].eg_out = 0x1ff; + chip->slot[slotnum].eg_gen = envelope_gen_num_release; + chip->slot[slotnum].trem = (Bit8u*)&chip->zeromod; + chip->slot[slotnum].slot_num = slotnum; + } + for (channum = 0; channum < 18; channum++) + { + chip->channel[channum].slots[0] = &chip->slot[ch_slot[channum]]; + chip->channel[channum].slots[1] = &chip->slot[ch_slot[channum] + 3]; + chip->slot[ch_slot[channum]].channel = &chip->channel[channum]; + chip->slot[ch_slot[channum] + 3].channel = &chip->channel[channum]; + if ((channum % 9) < 3) + { + chip->channel[channum].pair = &chip->channel[channum + 3]; + } + else if ((channum % 9) < 6) + { + chip->channel[channum].pair = &chip->channel[channum - 3]; + } + chip->channel[channum].chip = chip; + chip->channel[channum].out[0] = &chip->zeromod; + chip->channel[channum].out[1] = &chip->zeromod; + chip->channel[channum].out[2] = &chip->zeromod; + chip->channel[channum].out[3] = &chip->zeromod; + chip->channel[channum].chtype = ch_2op; + chip->channel[channum].cha = 0xffff; + chip->channel[channum].chb = 0xffff; + chip->channel[channum].leftpan = 0x10000; + chip->channel[channum].rightpan = 0x10000; + chip->channel[channum].ch_num = channum; + OPL3_ChannelSetupAlg(&chip->channel[channum]); + } + chip->noise = 1; + chip->rateratio = (samplerate << RSM_FRAC) / 49716; + chip->tremoloshift = 4; + chip->vibshift = 1; + + if (!panpot_lut_build) + { + for (int i = 0; i < 256; i++) + { + panpot_lut[i] = (Bit32u)(sin(i * M_PI / 512.0) * 0x10000); + } + panpot_lut_build = 1; + } +} + +void OPL3_WriteReg(opl3_chip *chip, Bit16u reg, Bit8u v) +{ + Bit8u high = (reg >> 8) & 0x01; + Bit8u regm = reg & 0xff; + switch (regm & 0xf0) + { + case 0x00: + if (high) + { + switch (regm & 0x0f) + { + case 0x04: + OPL3_ChannelSet4Op(chip, v); + break; + case 0x05: + chip->newm = v & 0x01; + chip->stereoext = (v >> 1) & 0x01; + break; + } + } + else + { + switch (regm & 0x0f) + { + case 0x08: + chip->nts = (v >> 6) & 0x01; + break; + } + } + break; + case 0x20: + case 0x30: + if (ad_slot[regm & 0x1f] >= 0) + { + OPL3_SlotWrite20(&chip->slot[18 * high + ad_slot[regm & 0x1f]], v); + } + break; + case 0x40: + case 0x50: + if (ad_slot[regm & 0x1f] >= 0) + { + OPL3_SlotWrite40(&chip->slot[18 * high + ad_slot[regm & 0x1f]], v); + } + break; + case 0x60: + case 0x70: + if (ad_slot[regm & 0x1f] >= 0) + { + OPL3_SlotWrite60(&chip->slot[18 * high + ad_slot[regm & 0x1f]], v); + } + break; + case 0x80: + case 0x90: + if (ad_slot[regm & 0x1f] >= 0) + { + OPL3_SlotWrite80(&chip->slot[18 * high + ad_slot[regm & 0x1f]], v); + } + break; + case 0xe0: + case 0xf0: + if (ad_slot[regm & 0x1f] >= 0) + { + OPL3_SlotWriteE0(&chip->slot[18 * high + ad_slot[regm & 0x1f]], v); + } + break; + case 0xa0: + if ((regm & 0x0f) < 9) + { + OPL3_ChannelWriteA0(&chip->channel[9 * high + (regm & 0x0f)], v); + } + break; + case 0xb0: + if (regm == 0xbd && !high) + { + chip->tremoloshift = (((v >> 7) ^ 1) << 1) + 2; + chip->vibshift = ((v >> 6) & 0x01) ^ 1; + OPL3_ChannelUpdateRhythm(chip, v); + } + else if ((regm & 0x0f) < 9) + { + OPL3_ChannelWriteB0(&chip->channel[9 * high + (regm & 0x0f)], v); + if (v & 0x20) + { + OPL3_ChannelKeyOn(&chip->channel[9 * high + (regm & 0x0f)]); + } + else + { + OPL3_ChannelKeyOff(&chip->channel[9 * high + (regm & 0x0f)]); + } + } + break; + case 0xc0: + if ((regm & 0x0f) < 9) + { + OPL3_ChannelWriteC0(&chip->channel[9 * high + (regm & 0x0f)], v); + } + break; + case 0xd0: + if ((regm & 0x0f) < 9) + { + OPL3_ChannelWriteD0(&chip->channel[9 * high + (regm & 0x0f)], v); + } + break; + } +} + +void OPL3_WriteRegBuffered(opl3_chip *chip, Bit16u reg, Bit8u v) +{ + Bit64u time1, time2; + + if (chip->writebuf[chip->writebuf_last].reg & 0x200) + { + OPL3_WriteReg(chip, chip->writebuf[chip->writebuf_last].reg & 0x1ff, + chip->writebuf[chip->writebuf_last].data); + + chip->writebuf_cur = (chip->writebuf_last + 1) % OPL_WRITEBUF_SIZE; + chip->writebuf_samplecnt = chip->writebuf[chip->writebuf_last].time; + } + + chip->writebuf[chip->writebuf_last].reg = reg | 0x200; + chip->writebuf[chip->writebuf_last].data = v; + time1 = chip->writebuf_lasttime + OPL_WRITEBUF_DELAY; + time2 = chip->writebuf_samplecnt; + + if (time1 < time2) + { + time1 = time2; + } + + chip->writebuf[chip->writebuf_last].time = time1; + chip->writebuf_lasttime = time1; + chip->writebuf_last = (chip->writebuf_last + 1) % OPL_WRITEBUF_SIZE; +} + +void OPL3_GenerateStream(opl3_chip *chip, Bit16s *sndptr, Bit32u numsamples) +{ + Bit32u i; + + for(i = 0; i < numsamples; i++) + { + OPL3_GenerateResampled(chip, sndptr); + sndptr += 2; + } +} diff --git a/source/audiolib/src/vorbis.cpp b/source/audiolib/src/vorbis.cpp index 48ae878f7..e095b055e 100644 --- a/source/audiolib/src/vorbis.cpp +++ b/source/audiolib/src/vorbis.cpp @@ -289,7 +289,7 @@ static playbackstatus MV_GetNextVorbisBlock(VoiceNode *voice) if (!vi || (vi->channels != 1 && vi->channels != 2)) return NoMoreData; - voice->channels = vi->channels; + voice->channels = vi->channels; voice->SamplingRate = vi->rate; voice->RateScale = divideu32(voice->SamplingRate * voice->PitchScale, MV_MixRate); @@ -359,11 +359,13 @@ int MV_PlayVorbis(char *ptr, uint32_t length, int loopstart, int loopend, int pi if (!MV_Installed) return MV_SetErrorCode(MV_NotInstalled); - auto vd = (vorbis_data *)Xcalloc(1, sizeof(vorbis_data)); + VoiceNode *voice = MV_AllocVoice(priority); if (voice == nullptr) return MV_SetErrorCode(MV_NoVoices); + + auto vd = (vorbis_data *)Xcalloc(1, sizeof(vorbis_data)); vd->ptr = ptr; vd->pos = 0; vd->length = length; @@ -371,43 +373,19 @@ int MV_PlayVorbis(char *ptr, uint32_t length, int loopstart, int loopend, int pi vd->lastbitstream = -1; int status = ov_open_callbacks((void *)vd, &vd->vf, 0, 0, vorbis_callbacks); + vorbis_info *vi; - if (status < 0) + if (status < 0 || ((vi = ov_info(&vd->vf, 0)) == nullptr) || vi->channels < 1 || vi->channels > 2) { - Xfree(vd); - MV_Printf("MV_PlayVorbis: err %d\n", status); - MV_SetErrorCode(MV_InvalidFile); - return MV_Error; - } + if (status == 0) + ov_clear(&vd->vf); + else + MV_Printf("MV_PlayVorbis: err %d\n", status); - vorbis_info *vi = ov_info(&vd->vf, 0); - - if (!vi) - { - ov_clear(&vd->vf); Xfree(vd); return MV_SetErrorCode(MV_InvalidFile); } - if (vi->channels != 1 && vi->channels != 2) - { - ov_clear(&vd->vf); - Xfree(vd); - MV_SetErrorCode(MV_InvalidFile); - return MV_Error; - } - - // Request a voice from the voice pool - VoiceNode *voice = MV_AllocVoice(priority); - - if (voice == NULL) - { - ov_clear(&vd->vf); - Xfree(vd); - MV_SetErrorCode(MV_NoVoices); - return MV_Error; - } - voice->wavetype = FMT_VORBIS; voice->bits = 16; voice->channels = vi->channels; @@ -448,7 +426,6 @@ void MV_ReleaseVorbisVoice( VoiceNode * voice ) auto vd = (vorbis_data *)voice->rawdataptr; - voice->rawdataptr = 0; voice->length = 0; voice->sound = nullptr; ov_clear(&vd->vf); diff --git a/source/audiolib/src/xmp.cpp b/source/audiolib/src/xmp.cpp index 6b7f4d68f..80c13156f 100644 --- a/source/audiolib/src/xmp.cpp +++ b/source/audiolib/src/xmp.cpp @@ -8,6 +8,7 @@ #include "pitch.h" #include "pragmas.h" +#define BUILDING_STATIC #include "libxmp-lite/xmp.h" typedef struct {