diff -u -ru adplug-1.5.1/AUTHORS adplug-1.5.1-nonfree/AUTHORS --- adplug-1.5.1/AUTHORS 2005-05-12 18:48:29.000000000 +0200 +++ adplug-1.5.1-nonfree/AUTHORS 2005-09-16 16:49:07.000000000 +0200 @@ -14,7 +14,8 @@ "at yahoo" plus "dot com">: - M: Origin Music player development -Tatsuyuki Satoh : +Tatsuyuki Satoh , +Jarek Burczynski : - First YM3812 emulator development Ken Silverman : diff -u -ru adplug-1.5.1/COPYING adplug-1.5.1-nonfree/COPYING --- adplug-1.5.1/COPYING 2005-05-12 18:39:39.000000000 +0200 +++ adplug-1.5.1-nonfree/COPYING 2005-09-16 16:49:07.000000000 +0200 @@ -1,3 +1,28 @@ +Tatsuyuki Satoh and Jarek Burczynski's YM3812 emulator, constituted in +this distribution by the files `src/fmopl.c' and `src/fmopl.h', and +only these files, is covered by paragraph VI of the MAME license: + +--- BEGIN of excerpt of the MAME license --- + +VI. Reuse of Source Code +-------------------------- + This chapter might not apply to specific portions of MAME (e.g. CPU + emulators) which bear different copyright notices. + The source code cannot be used in a commercial product without the written + authorization of the authors. Use in non-commercial products is allowed, and + indeed encouraged. If you use portions of the MAME source code in your + program, however, you must make the full source code freely available as + well. + Usage of the _information_ contained in the source code is free for any use. + However, given the amount of time and energy it took to collect this + information, if you find new information we would appreciate if you made it + freely available as well. + +--- END of excerpt of the MAME license --- + +All other parts of this software distribution are copyrighted according +to the following GNU LESSER GENERAL PUBLIC LICENSE (LGPL): + GNU LESSER GENERAL PUBLIC LICENSE Version 2.1, February 1999 diff -u -ru adplug-1.5.1/src/adplug.cpp adplug-1.5.1-nonfree/src/adplug.cpp --- adplug-1.5.1/src/adplug.cpp 2005-05-12 18:48:10.000000000 +0200 +++ adplug-1.5.1-nonfree/src/adplug.cpp 2005-09-16 16:49:07.000000000 +0200 @@ -64,7 +64,7 @@ /***** Defines *****/ -#define VERSION "1.5.1" // AdPlug library version string +#define VERSION "1.5.1-nonfree" // AdPlug library version string /***** CAdPlug *****/ diff -u -ru adplug-1.5.1/src/emuopl.cpp adplug-1.5.1-nonfree/src/emuopl.cpp --- adplug-1.5.1/src/emuopl.cpp 2003-11-03 16:41:33.000000000 +0100 +++ adplug-1.5.1-nonfree/src/emuopl.cpp 2005-09-16 16:49:07.000000000 +0200 @@ -1,6 +1,6 @@ /* * AdPlug - Replayer for many OPL2/OPL3 audio file formats. - * Copyright (C) 1999 - 2002 Simon Peter , et al. + * Copyright (C) 1999 - 2003 Simon Peter , et al. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -24,12 +24,12 @@ CEmuopl::CEmuopl(int rate, bool bit16, bool usestereo) : use16bit(bit16), stereo(usestereo) { - opl = OPLCreate(OPL_TYPE_YM3812, 3579545, rate); + YM3812Init(1, 3579545, rate); } CEmuopl::~CEmuopl() { - OPLDestroy(opl); + YM3812Shutdown(); } void CEmuopl::update(short *buf, int samples) @@ -37,7 +37,7 @@ int i; if(use16bit) { - YM3812UpdateOne(opl,buf,samples); + YM3812UpdateOne(0,buf,samples); if(stereo) for(i=samples-1;i>=0;i--) { @@ -48,7 +48,7 @@ short *tempbuf = new short[stereo ? samples*2 : samples]; int i; - YM3812UpdateOne(opl,tempbuf,samples); + YM3812UpdateOne(0,tempbuf,samples); if(stereo) for(i=samples-1;i>=0;i--) { @@ -65,11 +65,11 @@ void CEmuopl::write(int reg, int val) { - OPLWrite(opl,0,reg); - OPLWrite(opl,1,val); + YM3812Write(0,0,reg); + YM3812Write(0,1,val); } void CEmuopl::init() { - OPLResetChip(opl); + YM3812ResetChip(0); } diff -u -ru adplug-1.5.1/src/emuopl.h adplug-1.5.1-nonfree/src/emuopl.h --- adplug-1.5.1/src/emuopl.h 2004-05-13 11:33:45.000000000 +0200 +++ adplug-1.5.1-nonfree/src/emuopl.h 2005-09-16 16:49:07.000000000 +0200 @@ -41,7 +41,6 @@ private: bool use16bit,stereo; - FM_OPL *opl; // holds emulator data }; #endif diff -u -ru adplug-1.5.1/src/fmopl.c adplug-1.5.1-nonfree/src/fmopl.c --- adplug-1.5.1/src/fmopl.c 2003-11-03 16:41:33.000000000 +0100 +++ adplug-1.5.1-nonfree/src/fmopl.c 2005-09-16 16:52:46.000000000 +0200 @@ -1,119 +1,340 @@ /* ** -** File: fmopl.c -- software implementation of FM sound generator +** File: fmopl.c - software implementation of FM sound generator +** types OPL and OPL2 ** -** Copyright (C) 1999,2000 Tatsuyuki Satoh , MultiArcadeMachineEmurator development +** Copyright (C) 2002,2003 Jarek Burczynski (bujar at mame dot net) +** Copyright (C) 1999,2000 Tatsuyuki Satoh , MultiArcadeMachineEmulator development ** -** Version 0.37a +** Version 0.72 ** -*/ - -/* - preliminary : - Problem : - note: -*/ -/* This version of fmopl.c is a fork of the MAME one, relicensed under the LGPL. - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ +Revision History: -#define INLINE __inline -#define HAS_YM3812 1 +04-08-2003 Jarek Burczynski: + - removed BFRDY hack. BFRDY is busy flag, and it should be 0 only when the chip + handles memory read/write or during the adpcm synthesis when the chip + requests another byte of ADPCM data. + +24-07-2003 Jarek Burczynski: + - added a small hack for Y8950 status BFRDY flag (bit 3 should be set after + some (unknown) delay). Right now it's always set. + +14-06-2003 Jarek Burczynski: + - implemented all of the status register flags in Y8950 emulation + - renamed Y8950SetDeltaTMemory() parameters from _rom_ to _mem_ since + they can be either RAM or ROM + +08-10-2002 Jarek Burczynski (thanks to Dox for the YM3526 chip) + - corrected YM3526Read() to always set bit 2 and bit 1 + to HIGH state - identical to YM3812Read (verified on real YM3526) + +04-28-2002 Jarek Burczynski: + - binary exact Envelope Generator (verified on real YM3812); + compared to YM2151: the EG clock is equal to internal_clock, + rates are 2 times slower and volume resolution is one bit less + - modified interface functions (they no longer return pointer - + that's internal to the emulator now): + - new wrapper functions for OPLCreate: YM3526Init(), YM3812Init() and Y8950Init() + - corrected 'off by one' error in feedback calculations (when feedback is off) + - enabled waveform usage (credit goes to Vlad Romascanu and zazzal22) + - speeded up noise generator calculations (Nicola Salmoria) + +03-24-2002 Jarek Burczynski (thanks to Dox for the YM3812 chip) + Complete rewrite (all verified on real YM3812): + - corrected sin_tab and tl_tab data + - corrected operator output calculations + - corrected waveform_select_enable register; + simply: ignore all writes to waveform_select register when + waveform_select_enable == 0 and do not change the waveform previously selected. + - corrected KSR handling + - corrected Envelope Generator: attack shape, Sustain mode and + Percussive/Non-percussive modes handling + - Envelope Generator rates are two times slower now + - LFO amplitude (tremolo) and phase modulation (vibrato) + - rhythm sounds phase generation + - white noise generator (big thanks to Olivier Galibert for mentioning Berlekamp-Massey algorithm) + - corrected key on/off handling (the 'key' signal is ORed from three sources: FM, rhythm and CSM) + - funky details (like ignoring output of operator 1 in BD rhythm sound when connect == 1) + +12-28-2001 Acho A. Tang + - reflected Delta-T EOS status on Y8950 status port. + - fixed subscription range of attack/decay tables + + + To do: + add delay before key off in CSM mode (see CSMKeyControll) + verify volume of the FM part on the Y8950 +*/ #include #include -#include -#include #include + //#include "driver.h" /* use M.A.M.E. */ + +//#include "ymdeltat.h" + #include "fmopl.h" #ifndef PI #define PI 3.14159265358979323846 #endif -/* -------------------- for debug --------------------- */ -/* #define OPL_OUTPUT_LOG */ -#ifdef OPL_OUTPUT_LOG -static FILE *opl_dbg_fp = NULL; -static FM_OPL *opl_dbg_opl[16]; -static int opl_dbg_maxchip,opl_dbg_chip; +#ifdef _MSC_VER +# define INLINE __inline +#elif defined(__GNUC__) +# define INLINE inline +#else +# define INLINE #endif -/* -------------------- preliminary define section --------------------- */ -/* attack/decay rate time rate */ -#define OPL_ARRATE 141280 /* RATE 4 = 2826.24ms @ 3.6MHz */ -#define OPL_DRRATE 1956000 /* RATE 4 = 39280.64ms @ 3.6MHz */ +/* output final shift */ +#if (OPL_SAMPLE_BITS==16) + #define FINAL_SH (0) + #define MAXOUT (+32767) + #define MINOUT (-32768) +#else + #define FINAL_SH (8) + #define MAXOUT (+127) + #define MINOUT (-128) +#endif -#define DELTAT_MIXING_LEVEL (1) /* DELTA-T ADPCM MIXING LEVEL */ -#define FREQ_BITS 24 /* frequency turn */ +#define FREQ_SH 16 /* 16.16 fixed point (frequency calculations) */ +#define EG_SH 16 /* 16.16 fixed point (EG timing) */ +#define LFO_SH 24 /* 8.24 fixed point (LFO calculations) */ +#define TIMER_SH 16 /* 16.16 fixed point (timers calculations) */ -/* counter bits = 20 , octerve 7 */ -#define FREQ_RATE (1<<(FREQ_BITS-20)) -#define TL_BITS (FREQ_BITS+2) +#define FREQ_MASK ((1<=0) + { + if (value < 0x0200) + return (value & ~0); + if (value < 0x0400) + return (value & ~1); + if (value < 0x0800) + return (value & ~3); + if (value < 0x1000) + return (value & ~7); + if (value < 0x2000) + return (value & ~15); + if (value < 0x4000) + return (value & ~31); + return (value & ~63); + } + /*else value < 0*/ + if (value > -0x0200) + return (~abs(value) & ~0); + if (value > -0x0400) + return (~abs(value) & ~1); + if (value > -0x0800) + return (~abs(value) & ~3); + if (value > -0x1000) + return (~abs(value) & ~7); + if (value > -0x2000) + return (~abs(value) & ~15); + if (value > -0x4000) + return (~abs(value) & ~31); + return (~abs(value) & ~63); +} + + +static FILE *sample[1]; + #if 1 /*save to MONO file */ + #define SAVE_ALL_CHANNELS \ + { signed int pom = acc_calc(lt); \ + fputc((unsigned short)pom&0xff,sample[0]); \ + fputc(((unsigned short)pom>>8)&0xff,sample[0]); \ + } + #else /*save to STEREO file */ + #define SAVE_ALL_CHANNELS \ + { signed int pom = lt; \ + fputc((unsigned short)pom&0xff,sample[0]); \ + fputc(((unsigned short)pom>>8)&0xff,sample[0]); \ + pom = rt; \ + fputc((unsigned short)pom&0xff,sample[0]); \ + fputc(((unsigned short)pom>>8)&0xff,sample[0]); \ + } + #endif +#endif + +/* #define LOG_CYM_FILE */ +#ifdef LOG_CYM_FILE + FILE * cymfile = NULL; +#endif + + + +#define OPL_TYPE_WAVESEL 0x01 /* waveform select */ +#define OPL_TYPE_ADPCM 0x02 /* DELTA-T ADPCM unit */ +#define OPL_TYPE_KEYBOARD 0x04 /* keyboard interface */ +#define OPL_TYPE_IO 0x08 /* I/O port */ + +/* ---------- Generic interface section ---------- */ +#define OPL_TYPE_YM3526 (0) +#define OPL_TYPE_YM3812 (OPL_TYPE_WAVESEL) +#define OPL_TYPE_Y8950 (OPL_TYPE_ADPCM|OPL_TYPE_KEYBOARD|OPL_TYPE_IO) + + + +typedef struct{ + UINT32 ar; /* attack rate: AR<<2 */ + UINT32 dr; /* decay rate: DR<<2 */ + UINT32 rr; /* release rate:RR<<2 */ + UINT8 KSR; /* key scale rate */ + UINT8 ksl; /* keyscale level */ + UINT8 ksr; /* key scale rate: kcode>>KSR */ + UINT8 mul; /* multiple: mul_tab[ML] */ + + /* Phase Generator */ + UINT32 Cnt; /* frequency counter */ + UINT32 Incr; /* frequency counter step */ + UINT8 FB; /* feedback shift value */ + INT32 *connect1; /* slot1 output pointer */ + INT32 op1_out[2]; /* slot1 output for feedback */ + UINT8 CON; /* connection (algorithm) type */ + + /* Envelope Generator */ + UINT8 eg_type; /* percussive/non-percussive mode */ + UINT8 state; /* phase type */ + UINT32 TL; /* total level: TL << 2 */ + INT32 TLL; /* adjusted now TL */ + INT32 volume; /* envelope counter */ + UINT32 sl; /* sustain level: sl_tab[SL] */ + UINT8 eg_sh_ar; /* (attack state) */ + UINT8 eg_sel_ar; /* (attack state) */ + UINT8 eg_sh_dr; /* (decay state) */ + UINT8 eg_sel_dr; /* (decay state) */ + UINT8 eg_sh_rr; /* (release state) */ + UINT8 eg_sel_rr; /* (release state) */ + UINT32 key; /* 0 = KEY OFF, >0 = KEY ON */ + + /* LFO */ + UINT32 AMmask; /* LFO Amplitude Modulation enable mask */ + UINT8 vib; /* LFO Phase Modulation enable flag (active high)*/ + + /* waveform select */ + unsigned int wavetable; +} OPL_SLOT; + +typedef struct{ + OPL_SLOT SLOT[2]; + /* phase generator state */ + UINT32 block_fnum; /* block+fnum */ + UINT32 fc; /* Freq. Increment base */ + UINT32 ksl_base; /* KeyScaleLevel Base step */ + UINT8 kcode; /* key code (for key scaling) */ +} OPL_CH; + +/* OPL state */ +typedef struct fm_opl_f { + /* FM channel slots */ + OPL_CH P_CH[9]; /* OPL/OPL2 chips have 9 channels*/ + + UINT32 eg_cnt; /* global envelope generator counter */ + UINT32 eg_timer; /* global envelope generator counter works at frequency = chipclock/72 */ + UINT32 eg_timer_add; /* step of eg_timer */ + UINT32 eg_timer_overflow; /* envelope generator timer overlfows every 1 sample (on real chip) */ + + UINT8 rhythm; /* Rhythm mode */ + + UINT32 fn_tab[1024]; /* fnumber->increment counter */ + + /* LFO */ + UINT8 lfo_am_depth; + UINT8 lfo_pm_depth_range; + UINT32 lfo_am_cnt; + UINT32 lfo_am_inc; + UINT32 lfo_pm_cnt; + UINT32 lfo_pm_inc; + + UINT32 noise_rng; /* 23 bit noise shift register */ + UINT32 noise_p; /* current noise 'phase' */ + UINT32 noise_f; /* current noise period */ + + UINT8 wavesel; /* waveform select enable flag */ + + int T[2]; /* timer counters */ + UINT8 st[2]; /* timer enable */ + +#if BUILD_Y8950 + /* Delta-T ADPCM unit (Y8950) */ + + YM_DELTAT *deltat; + + /* Keyboard and I/O ports interface */ + UINT8 portDirection; + UINT8 portLatch; + OPL_PORTHANDLER_R porthandler_r; + OPL_PORTHANDLER_W porthandler_w; + int port_param; + OPL_PORTHANDLER_R keyboardhandler_r; + OPL_PORTHANDLER_W keyboardhandler_w; + int keyboard_param; +#endif + + /* external event callback handlers */ + OPL_TIMERHANDLER TimerHandler; /* TIMER handler */ + int TimerParam; /* TIMER parameter */ + OPL_IRQHANDLER IRQHandler; /* IRQ handler */ + int IRQParam; /* IRQ parameter */ + OPL_UPDATEHANDLER UpdateHandler;/* stream update handler */ + int UpdateParam; /* stream update parameter */ + + UINT8 type; /* chip type */ + UINT8 address; /* address register */ + UINT8 status; /* status flag */ + UINT8 statusmask; /* status mask */ + UINT8 mode; /* Reg.08 : CSM,notesel,etc. */ + + int clock; /* master clock (Hz) */ + int rate; /* sampling rate (Hz) */ + double freqbase; /* frequency base */ + double TimerBase; /* Timer base time (==sampling time)*/ +} FM_OPL; + -/* -------------------- tables --------------------- */ + +/* mapping of register number (offset) to slot number used by the emulator */ static const int slot_array[32]= { 0, 2, 4, 1, 3, 5,-1,-1, @@ -123,9 +344,10 @@ }; /* key scale level */ -/* table is 3dB/OCT , DV converts this in TL step at 6dB/OCT */ -#define DV (EG_STEP/2) -static const UINT32 KSL_TABLE[8*16]= +/* table is 3dB/octave , DV converts this into 6dB/octave */ +/* 0.1875 is bit 0 weight of the envelope counter (volume) expressed in the 'decibel' scale */ +#define DV (0.1875/2.0) +static const UINT32 ksl_tab[8*16]= { /* OCT 0 */ 0.000/DV, 0.000/DV, 0.000/DV, 0.000/DV, @@ -170,81 +392,274 @@ }; #undef DV -/* sustain lebel table (3db per step) */ +/* sustain level table (3dB per step) */ /* 0 - 15: 0, 3, 6, 9,12,15,18,21,24,27,30,33,36,39,42,93 (dB)*/ -#define SC(db) (db*((3/EG_STEP)*(1<>4) + +/* sin waveform table in 'decibel' scale */ +/* four waveforms on OPL2 type chips */ +static unsigned int sin_tab[SIN_LEN * 4]; + + +/* LFO Amplitude Modulation table (verified on real YM3812) + 27 output levels (triangle waveform); 1 level takes one of: 192, 256 or 448 samples + + Length: 210 elements. + + Each of the elements has to be repeated + exactly 64 times (on 64 consecutive samples). + The whole table takes: 64 * 210 = 13440 samples. + + When AM = 1 data is used directly + When AM = 0 data is divided by 4 before being used (loosing precision is important) +*/ + +#define LFO_AM_TAB_ELEMENTS 210 + +static const UINT8 lfo_am_table[LFO_AM_TAB_ELEMENTS] = { +0,0,0,0,0,0,0, +1,1,1,1, +2,2,2,2, +3,3,3,3, +4,4,4,4, +5,5,5,5, +6,6,6,6, +7,7,7,7, +8,8,8,8, +9,9,9,9, +10,10,10,10, +11,11,11,11, +12,12,12,12, +13,13,13,13, +14,14,14,14, +15,15,15,15, +16,16,16,16, +17,17,17,17, +18,18,18,18, +19,19,19,19, +20,20,20,20, +21,21,21,21, +22,22,22,22, +23,23,23,23, +24,24,24,24, +25,25,25,25, +26,26,26, +25,25,25,25, +24,24,24,24, +23,23,23,23, +22,22,22,22, +21,21,21,21, +20,20,20,20, +19,19,19,19, +18,18,18,18, +17,17,17,17, +16,16,16,16, +15,15,15,15, +14,14,14,14, +13,13,13,13, +12,12,12,12, +11,11,11,11, +10,10,10,10, +9,9,9,9, +8,8,8,8, +7,7,7,7, +6,6,6,6, +5,5,5,5, +4,4,4,4, +3,3,3,3, +2,2,2,2, +1,1,1,1 +}; + +/* LFO Phase Modulation table (verified on real YM3812) */ +static const INT8 lfo_pm_table[8*8*2] = { + +/* FNUM2/FNUM = 00 0xxxxxxx (0x0000) */ +0, 0, 0, 0, 0, 0, 0, 0, /*LFO PM depth = 0*/ +0, 0, 0, 0, 0, 0, 0, 0, /*LFO PM depth = 1*/ + +/* FNUM2/FNUM = 00 1xxxxxxx (0x0080) */ +0, 0, 0, 0, 0, 0, 0, 0, /*LFO PM depth = 0*/ +1, 0, 0, 0,-1, 0, 0, 0, /*LFO PM depth = 1*/ + +/* FNUM2/FNUM = 01 0xxxxxxx (0x0100) */ +1, 0, 0, 0,-1, 0, 0, 0, /*LFO PM depth = 0*/ +2, 1, 0,-1,-2,-1, 0, 1, /*LFO PM depth = 1*/ + +/* FNUM2/FNUM = 01 1xxxxxxx (0x0180) */ +1, 0, 0, 0,-1, 0, 0, 0, /*LFO PM depth = 0*/ +3, 1, 0,-1,-3,-1, 0, 1, /*LFO PM depth = 1*/ + +/* FNUM2/FNUM = 10 0xxxxxxx (0x0200) */ +2, 1, 0,-1,-2,-1, 0, 1, /*LFO PM depth = 0*/ +4, 2, 0,-2,-4,-2, 0, 2, /*LFO PM depth = 1*/ + +/* FNUM2/FNUM = 10 1xxxxxxx (0x0280) */ +2, 1, 0,-1,-2,-1, 0, 1, /*LFO PM depth = 0*/ +5, 2, 0,-2,-5,-2, 0, 2, /*LFO PM depth = 1*/ + +/* FNUM2/FNUM = 11 0xxxxxxx (0x0300) */ +3, 1, 0,-1,-3,-1, 0, 1, /*LFO PM depth = 0*/ +6, 3, 0,-3,-6,-3, 0, 3, /*LFO PM depth = 1*/ + +/* FNUM2/FNUM = 11 1xxxxxxx (0x0380) */ +3, 1, 0,-1,-3,-1, 0, 1, /*LFO PM depth = 0*/ +7, 3, 0,-3,-7,-3, 0, 3 /*LFO PM depth = 1*/ +}; -/* -------------------- static state --------------------- */ /* lock level of common table */ static int num_lock = 0; -/* work table */ -static void *cur_chip = NULL; /* current chip point */ -/* currenct chip state */ -/* static OPLSAMPLE *bufL,*bufR; */ -static OPL_CH *S_CH; -static OPL_CH *E_CH; -OPL_SLOT *SLOT7_1,*SLOT7_2,*SLOT8_1,*SLOT8_2; - -static INT32 outd[1]; -static INT32 ams; -static INT32 vib; -INT32 *ams_table; -INT32 *vib_table; -static INT32 amsIncr; -static INT32 vibIncr; -static INT32 feedback2; /* connect for SLOT 2 */ - -/* log output level */ -#define LOG_ERR 3 /* ERROR */ -#define LOG_WAR 2 /* WARNING */ -#define LOG_INF 1 /* INFORMATION */ - -//#define LOG_LEVEL LOG_INF -#define LOG_LEVEL LOG_ERR -//#define LOG(n,x) if( (n)>=LOG_LEVEL ) logerror x -#define LOG(n,x) +static void *cur_chip = NULL; /* current chip pointer */ +static OPL_SLOT *SLOT7_1, *SLOT7_2, *SLOT8_1, *SLOT8_2; + +static signed int phase_modulation; /* phase modulation input (SLOT 2) */ +static signed int output[1]; + +#if BUILD_Y8950 +static INT32 output_deltat[4]; /* for Y8950 DELTA-T, chip is mono, that 4 here is just for safety */ +#endif + +static UINT32 LFO_AM; +static INT32 LFO_PM; -/* --------------------- subroutines --------------------- */ -INLINE int Limit( int val, int max, int min ) { + +INLINE int limit( int val, int max, int min ) { if ( val > max ) val = max; else if ( val < min ) @@ -253,6 +668,7 @@ return val; } + /* status set and IRQ handling */ INLINE void OPL_STATUS_SET(FM_OPL *OPL,int flag) { @@ -294,509 +710,806 @@ OPL_STATUS_RESET(OPL,0); } -/* ----- key on ----- */ -INLINE void OPL_KEYON(OPL_SLOT *SLOT) + +/* advance LFO to next sample */ +INLINE void advance_lfo(FM_OPL *OPL) { - /* sin wave restart */ - SLOT->Cnt = 0; - /* set attack */ - SLOT->evm = ENV_MOD_AR; - SLOT->evs = SLOT->evsa; - SLOT->evc = EG_AST; - SLOT->eve = EG_AED; -} -/* ----- key off ----- */ -INLINE void OPL_KEYOFF(OPL_SLOT *SLOT) -{ - if( SLOT->evm > ENV_MOD_RR) - { - /* set envelope counter from envleope output */ - SLOT->evm = ENV_MOD_RR; - if( !(SLOT->evc&EG_DST) ) - //SLOT->evc = (ENV_CURVE[SLOT->evc>>ENV_BITS]<evc = EG_DST; - SLOT->eve = EG_DED; - SLOT->evs = SLOT->evsr; - } + UINT8 tmp; + + /* LFO */ + OPL->lfo_am_cnt += OPL->lfo_am_inc; + if (OPL->lfo_am_cnt >= (LFO_AM_TAB_ELEMENTS<lfo_am_cnt -= (LFO_AM_TAB_ELEMENTS<lfo_am_cnt >> LFO_SH ]; + + if (OPL->lfo_am_depth) + LFO_AM = tmp; + else + LFO_AM = tmp>>2; + + OPL->lfo_pm_cnt += OPL->lfo_pm_inc; + LFO_PM = ((OPL->lfo_pm_cnt>>LFO_SH) & 7) | OPL->lfo_pm_depth_range; } -/* ---------- calcrate Envelope Generator & Phase Generator ---------- */ -/* return : envelope output */ -INLINE UINT32 OPL_CALC_SLOT( OPL_SLOT *SLOT ) -{ - /* calcrate envelope generator */ - if( (SLOT->evc+=SLOT->evs) >= SLOT->eve ) - { - switch( SLOT->evm ){ - case ENV_MOD_AR: /* ATTACK -> DECAY1 */ - /* next DR */ - SLOT->evm = ENV_MOD_DR; - SLOT->evc = EG_DST; - SLOT->eve = SLOT->SL; - SLOT->evs = SLOT->evsd; - break; - case ENV_MOD_DR: /* DECAY -> SL or RR */ - SLOT->evc = SLOT->SL; - SLOT->eve = EG_DED; - if(SLOT->eg_typ) - { - SLOT->evs = 0; - } - else +/* advance to next sample */ +INLINE void advance(FM_OPL *OPL) +{ + OPL_CH *CH; + OPL_SLOT *op; + int i; + + OPL->eg_timer += OPL->eg_timer_add; + + while (OPL->eg_timer >= OPL->eg_timer_overflow) + { + OPL->eg_timer -= OPL->eg_timer_overflow; + + OPL->eg_cnt++; + + for (i=0; i<9*2; i++) + { + CH = &OPL->P_CH[i/2]; + op = &CH->SLOT[i&1]; + + /* Envelope Generator */ + switch(op->state) { - SLOT->evm = ENV_MOD_RR; - SLOT->evs = SLOT->evsr; - } + case EG_ATT: /* attack phase */ + if ( !(OPL->eg_cnt & ((1<eg_sh_ar)-1) ) ) + { + op->volume += (~op->volume * + (eg_inc[op->eg_sel_ar + ((OPL->eg_cnt>>op->eg_sh_ar)&7)]) + ) >>3; + + if (op->volume <= MIN_ATT_INDEX) + { + op->volume = MIN_ATT_INDEX; + op->state = EG_DEC; + } + + } break; - case ENV_MOD_RR: /* RR -> OFF */ - SLOT->evc = EG_OFF; - SLOT->eve = EG_OFF+1; - SLOT->evs = 0; + + case EG_DEC: /* decay phase */ + if ( !(OPL->eg_cnt & ((1<eg_sh_dr)-1) ) ) + { + op->volume += eg_inc[op->eg_sel_dr + ((OPL->eg_cnt>>op->eg_sh_dr)&7)]; + + if ( op->volume >= op->sl ) + op->state = EG_SUS; + + } + break; + + case EG_SUS: /* sustain phase */ + + /* this is important behaviour: + one can change percusive/non-percussive modes on the fly and + the chip will remain in sustain phase - verified on real YM3812 */ + + if(op->eg_type) /* non-percussive mode */ + { + /* do nothing */ + } + else /* percussive mode */ + { + /* during sustain phase chip adds Release Rate (in percussive mode) */ + if ( !(OPL->eg_cnt & ((1<eg_sh_rr)-1) ) ) + { + op->volume += eg_inc[op->eg_sel_rr + ((OPL->eg_cnt>>op->eg_sh_rr)&7)]; + + if ( op->volume >= MAX_ATT_INDEX ) + op->volume = MAX_ATT_INDEX; + } + /* else do nothing in sustain phase */ + } break; + + case EG_REL: /* release phase */ + if ( !(OPL->eg_cnt & ((1<eg_sh_rr)-1) ) ) + { + op->volume += eg_inc[op->eg_sel_rr + ((OPL->eg_cnt>>op->eg_sh_rr)&7)]; + + if ( op->volume >= MAX_ATT_INDEX ) + { + op->volume = MAX_ATT_INDEX; + op->state = EG_OFF; + } + + } + break; + + default: + break; + } } } - /* calcrate envelope */ - return SLOT->TLL+ENV_CURVE[SLOT->evc>>ENV_BITS]+(SLOT->ams ? ams : 0); -} -/* set algorythm connection */ -static void set_algorythm( OPL_CH *CH) -{ - INT32 *carrier = &outd[0]; - CH->connect1 = CH->CON ? carrier : &feedback2; - CH->connect2 = carrier; -} + for (i=0; i<9*2; i++) + { + CH = &OPL->P_CH[i/2]; + op = &CH->SLOT[i&1]; -/* ---------- frequency counter for operater update ---------- */ -INLINE void CALC_FCSLOT(OPL_CH *CH,OPL_SLOT *SLOT) -{ - int ksr; + /* Phase Generator */ + if(op->vib) + { + UINT8 block; + unsigned int block_fnum = CH->block_fnum; - /* frequency step counter */ - SLOT->Incr = CH->fc * SLOT->mul; - ksr = CH->kcode >> SLOT->KSR; + unsigned int fnum_lfo = (block_fnum&0x0380) >> 7; - if( SLOT->ksr != ksr ) - { - SLOT->ksr = ksr; - /* attack , decay rate recalcration */ - SLOT->evsa = SLOT->AR[ksr]; - SLOT->evsd = SLOT->DR[ksr]; - SLOT->evsr = SLOT->RR[ksr]; + signed int lfo_fn_table_index_offset = lfo_pm_table[LFO_PM + 16*fnum_lfo ]; + + if (lfo_fn_table_index_offset) /* LFO phase modulation active */ + { + block_fnum += lfo_fn_table_index_offset; + block = (block_fnum&0x1c00) >> 10; + op->Cnt += (OPL->fn_tab[block_fnum&0x03ff] >> (7-block)) * op->mul; + } + else /* LFO phase modulation = zero */ + { + op->Cnt += op->Incr; + } + } + else /* LFO phase modulation disabled for this operator */ + { + op->Cnt += op->Incr; + } } - SLOT->TLL = SLOT->TL + (CH->ksl_base>>SLOT->ksl); -} -/* set multi,am,vib,EG-TYP,KSR,mul */ -INLINE void set_mul(FM_OPL *OPL,int slot,int v) -{ - OPL_CH *CH = &OPL->P_CH[slot/2]; - OPL_SLOT *SLOT = &CH->SLOT[slot&1]; + /* The Noise Generator of the YM3812 is 23-bit shift register. + * Period is equal to 2^23-2 samples. + * Register works at sampling frequency of the chip, so output + * can change on every sample. + * + * Output of the register and input to the bit 22 is: + * bit0 XOR bit14 XOR bit15 XOR bit22 + * + * Simply use bit 22 as the noise output. + */ - SLOT->mul = MUL_TABLE[v&0x0f]; - SLOT->KSR = (v&0x10) ? 0 : 2; - SLOT->eg_typ = (v&0x20)>>5; - SLOT->vib = (v&0x40); - SLOT->ams = (v&0x80); - CALC_FCSLOT(CH,SLOT); -} + OPL->noise_p += OPL->noise_f; + i = OPL->noise_p >> FREQ_SH; /* number of events (shifts of the shift register) */ + OPL->noise_p &= FREQ_MASK; + while (i) + { + /* + UINT32 j; + j = ( (OPL->noise_rng) ^ (OPL->noise_rng>>14) ^ (OPL->noise_rng>>15) ^ (OPL->noise_rng>>22) ) & 1; + OPL->noise_rng = (j<<22) | (OPL->noise_rng>>1); + */ -/* set ksl & tl */ -INLINE void set_ksl_tl(FM_OPL *OPL,int slot,int v) -{ - OPL_CH *CH = &OPL->P_CH[slot/2]; - OPL_SLOT *SLOT = &CH->SLOT[slot&1]; - int ksl = v>>6; /* 0 / 1.5 / 3 / 6 db/OCT */ + /* + Instead of doing all the logic operations above, we + use a trick here (and use bit 0 as the noise output). + The difference is only that the noise bit changes one + step ahead. This doesn't matter since we don't know + what is real state of the noise_rng after the reset. + */ - SLOT->ksl = ksl ? 3-ksl : 31; - SLOT->TL = (v&0x3f)*(0.75/EG_STEP); /* 0.75db step */ + if (OPL->noise_rng & 1) OPL->noise_rng ^= 0x800302; + OPL->noise_rng >>= 1; - if( !(OPL->mode&0x80) ) - { /* not CSM latch total level */ - SLOT->TLL = SLOT->TL + (CH->ksl_base>>SLOT->ksl); + i--; } } -/* set attack rate & decay rate */ -INLINE void set_ar_dr(FM_OPL *OPL,int slot,int v) + +INLINE signed int op_calc(UINT32 phase, unsigned int env, signed int pm, unsigned int wave_tab) { - OPL_CH *CH = &OPL->P_CH[slot/2]; - OPL_SLOT *SLOT = &CH->SLOT[slot&1]; - int ar = v>>4; - int dr = v&0x0f; + UINT32 p; + + p = (env<<4) + sin_tab[wave_tab + ((((signed int)((phase & ~FREQ_MASK) + (pm<<16))) >> FREQ_SH ) & SIN_MASK) ]; - SLOT->AR = ar ? &OPL->AR_TABLE[ar<<2] : RATE_0; - SLOT->evsa = SLOT->AR[SLOT->ksr]; - if( SLOT->evm == ENV_MOD_AR ) SLOT->evs = SLOT->evsa; - - SLOT->DR = dr ? &OPL->DR_TABLE[dr<<2] : RATE_0; - SLOT->evsd = SLOT->DR[SLOT->ksr]; - if( SLOT->evm == ENV_MOD_DR ) SLOT->evs = SLOT->evsd; + if (p >= TL_TAB_LEN) + return 0; + return tl_tab[p]; } -/* set sustain level & release rate */ -INLINE void set_sl_rr(FM_OPL *OPL,int slot,int v) +INLINE signed int op_calc1(UINT32 phase, unsigned int env, signed int pm, unsigned int wave_tab) { - OPL_CH *CH = &OPL->P_CH[slot/2]; - OPL_SLOT *SLOT = &CH->SLOT[slot&1]; - int sl = v>>4; - int rr = v & 0x0f; + UINT32 p; + + p = (env<<4) + sin_tab[wave_tab + ((((signed int)((phase & ~FREQ_MASK) + pm )) >> FREQ_SH ) & SIN_MASK) ]; - SLOT->SL = SL_TABLE[sl]; - if( SLOT->evm == ENV_MOD_DR ) SLOT->eve = SLOT->SL; - SLOT->RR = &OPL->DR_TABLE[rr<<2]; - SLOT->evsr = SLOT->RR[SLOT->ksr]; - if( SLOT->evm == ENV_MOD_RR ) SLOT->evs = SLOT->evsr; + if (p >= TL_TAB_LEN) + return 0; + return tl_tab[p]; } -/* operator output calcrator */ -#define OP_OUT(slot,env,con) slot->wavetable[((slot->Cnt+con)/(0x1000000/SIN_ENT))&(SIN_ENT-1)][env] -/* ---------- calcrate one of channel ---------- */ + +#define volume_calc(OP) ((OP)->TLL + ((UINT32)(OP)->volume) + (LFO_AM & (OP)->AMmask)) + +/* calculate output */ INLINE void OPL_CALC_CH( OPL_CH *CH ) { - UINT32 env_out; OPL_SLOT *SLOT; + unsigned int env; + signed int out; + + phase_modulation = 0; - feedback2 = 0; /* SLOT 1 */ SLOT = &CH->SLOT[SLOT1]; - env_out=OPL_CALC_SLOT(SLOT); - if( env_out < EG_ENT-1 ) - { - /* PG */ - if(SLOT->vib) SLOT->Cnt += (SLOT->Incr*vib/VIB_RATE); - else SLOT->Cnt += SLOT->Incr; - /* connectoion */ - if(CH->FB) - { - int feedback1 = (CH->op1_out[0]+CH->op1_out[1])>>CH->FB; - CH->op1_out[1] = CH->op1_out[0]; - *CH->connect1 += CH->op1_out[0] = OP_OUT(SLOT,env_out,feedback1); - } - else - { - *CH->connect1 += OP_OUT(SLOT,env_out,0); - } - }else - { - CH->op1_out[1] = CH->op1_out[0]; - CH->op1_out[0] = 0; + env = volume_calc(SLOT); + out = SLOT->op1_out[0] + SLOT->op1_out[1]; + SLOT->op1_out[0] = SLOT->op1_out[1]; + *SLOT->connect1 += SLOT->op1_out[0]; + SLOT->op1_out[1] = 0; + if( env < ENV_QUIET ) + { + if (!SLOT->FB) + out = 0; + SLOT->op1_out[1] = op_calc1(SLOT->Cnt, env, (out<FB), SLOT->wavetable ); } + /* SLOT 2 */ - SLOT = &CH->SLOT[SLOT2]; - env_out=OPL_CALC_SLOT(SLOT); - if( env_out < EG_ENT-1 ) - { - /* PG */ - if(SLOT->vib) SLOT->Cnt += (SLOT->Incr*vib/VIB_RATE); - else SLOT->Cnt += SLOT->Incr; - /* connectoion */ - outd[0] += OP_OUT(SLOT,env_out, feedback2); - } + SLOT++; + env = volume_calc(SLOT); + if( env < ENV_QUIET ) + output[0] += op_calc(SLOT->Cnt, env, phase_modulation, SLOT->wavetable); } -/* ---------- calcrate rythm block ---------- */ -#define WHITE_NOISE_db 6.0 -INLINE void OPL_CALC_RH( OPL_CH *CH ) -{ - UINT32 env_tam,env_sd,env_top,env_hh; - int whitenoise = (rand()&1)*(WHITE_NOISE_db/EG_STEP); - INT32 tone8; +/* + operators used in the rhythm sounds generation process: + + Envelope Generator: + +channel operator register number Bass High Snare Tom Top +/ slot number TL ARDR SLRR Wave Drum Hat Drum Tom Cymbal + 6 / 0 12 50 70 90 f0 + + 6 / 1 15 53 73 93 f3 + + 7 / 0 13 51 71 91 f1 + + 7 / 1 16 54 74 94 f4 + + 8 / 0 14 52 72 92 f2 + + 8 / 1 17 55 75 95 f5 + + + Phase Generator: + +channel operator register number Bass High Snare Tom Top +/ slot number MULTIPLE Drum Hat Drum Tom Cymbal + 6 / 0 12 30 + + 6 / 1 15 33 + + 7 / 0 13 31 + + + + 7 / 1 16 34 ----- n o t u s e d ----- + 8 / 0 14 32 + + 8 / 1 17 35 + + + +channel operator register number Bass High Snare Tom Top +number number BLK/FNUM2 FNUM Drum Hat Drum Tom Cymbal + 6 12,15 B6 A6 + + + 7 13,16 B7 A7 + + + + + 8 14,17 B8 A8 + + + + +*/ + +/* calculate rhythm */ +INLINE void OPL_CALC_RH( OPL_CH *CH, unsigned int noise ) +{ OPL_SLOT *SLOT; - int env_out; + signed int out; + unsigned int env; + - /* BD : same as FM serial mode and output level is large */ - feedback2 = 0; + /* Bass Drum (verified on real YM3812): + - depends on the channel 6 'connect' register: + when connect = 0 it works the same as in normal (non-rhythm) mode (op1->op2->out) + when connect = 1 _only_ operator 2 is present on output (op2->out), operator 1 is ignored + - output sample always is multiplied by 2 + */ + + phase_modulation = 0; /* SLOT 1 */ SLOT = &CH[6].SLOT[SLOT1]; - env_out=OPL_CALC_SLOT(SLOT); - if( env_out < EG_ENT-1 ) - { - /* PG */ - if(SLOT->vib) SLOT->Cnt += (SLOT->Incr*vib/VIB_RATE); - else SLOT->Cnt += SLOT->Incr; - /* connectoion */ - if(CH[6].FB) - { - int feedback1 = (CH[6].op1_out[0]+CH[6].op1_out[1])>>CH[6].FB; - CH[6].op1_out[1] = CH[6].op1_out[0]; - feedback2 = CH[6].op1_out[0] = OP_OUT(SLOT,env_out,feedback1); - } - else - { - feedback2 = OP_OUT(SLOT,env_out,0); - } - }else + env = volume_calc(SLOT); + + out = SLOT->op1_out[0] + SLOT->op1_out[1]; + SLOT->op1_out[0] = SLOT->op1_out[1]; + + if (!SLOT->CON) + phase_modulation = SLOT->op1_out[0]; + /* else ignore output of operator 1 */ + + SLOT->op1_out[1] = 0; + if( env < ENV_QUIET ) { - feedback2 = 0; - CH[6].op1_out[1] = CH[6].op1_out[0]; - CH[6].op1_out[0] = 0; + if (!SLOT->FB) + out = 0; + SLOT->op1_out[1] = op_calc1(SLOT->Cnt, env, (out<FB), SLOT->wavetable ); } + /* SLOT 2 */ - SLOT = &CH[6].SLOT[SLOT2]; - env_out=OPL_CALC_SLOT(SLOT); - if( env_out < EG_ENT-1 ) - { - /* PG */ - if(SLOT->vib) SLOT->Cnt += (SLOT->Incr*vib/VIB_RATE); - else SLOT->Cnt += SLOT->Incr; - /* connectoion */ - outd[0] += OP_OUT(SLOT,env_out, feedback2)*2; - } - - // SD (17) = mul14[fnum7] + white noise - // TAM (15) = mul15[fnum8] - // TOP (18) = fnum6(mul18[fnum8]+whitenoise) - // HH (14) = fnum7(mul18[fnum8]+whitenoise) + white noise - env_sd =OPL_CALC_SLOT(SLOT7_2) + whitenoise; - env_tam=OPL_CALC_SLOT(SLOT8_1); - env_top=OPL_CALC_SLOT(SLOT8_2); - env_hh =OPL_CALC_SLOT(SLOT7_1) + whitenoise; - - /* PG */ - if(SLOT7_1->vib) SLOT7_1->Cnt += (2*SLOT7_1->Incr*vib/VIB_RATE); - else SLOT7_1->Cnt += 2*SLOT7_1->Incr; - if(SLOT7_2->vib) SLOT7_2->Cnt += ((CH[7].fc*8)*vib/VIB_RATE); - else SLOT7_2->Cnt += (CH[7].fc*8); - if(SLOT8_1->vib) SLOT8_1->Cnt += (SLOT8_1->Incr*vib/VIB_RATE); - else SLOT8_1->Cnt += SLOT8_1->Incr; - if(SLOT8_2->vib) SLOT8_2->Cnt += ((CH[8].fc*48)*vib/VIB_RATE); - else SLOT8_2->Cnt += (CH[8].fc*48); - - tone8 = OP_OUT(SLOT8_2,whitenoise,0 ); - - /* SD */ - if( env_sd < EG_ENT-1 ) - outd[0] += OP_OUT(SLOT7_1,env_sd, 0)*8; - /* TAM */ - if( env_tam < EG_ENT-1 ) - outd[0] += OP_OUT(SLOT8_1,env_tam, 0)*2; - /* TOP-CY */ - if( env_top < EG_ENT-1 ) - outd[0] += OP_OUT(SLOT7_2,env_top,tone8)*2; - /* HH */ - if( env_hh < EG_ENT-1 ) - outd[0] += OP_OUT(SLOT7_2,env_hh,tone8)*2; -} + SLOT++; + env = volume_calc(SLOT); + if( env < ENV_QUIET ) + output[0] += op_calc(SLOT->Cnt, env, phase_modulation, SLOT->wavetable) * 2; -/* ----------- initialize time tabls ----------- */ -static void init_timetables( FM_OPL *OPL , int ARRATE , int DRRATE ) -{ - int i; - double rate; - /* make attack rate & decay rate tables */ - for (i = 0;i < 4;i++) OPL->AR_TABLE[i] = OPL->DR_TABLE[i] = 0; - for (i = 4;i <= 60;i++){ - rate = OPL->freqbase; /* frequency rate */ - if( i < 60 ) rate *= 1.0+(i&3)*0.25; /* b0-1 : x1 , x1.25 , x1.5 , x1.75 */ - rate *= 1<<((i>>2)-1); /* b2-5 : shift bit */ - rate *= (double)(EG_ENT<AR_TABLE[i] = rate / ARRATE; - OPL->DR_TABLE[i] = rate / DRRATE; - } - for (i = 60;i < 76;i++) - { - OPL->AR_TABLE[i] = EG_AED-1; - OPL->DR_TABLE[i] = OPL->DR_TABLE[60]; - } -#if 0 - for (i = 0;i < 64 ;i++){ /* make for overflow area */ - LOG(LOG_WAR,("rate %2d , ar %f ms , dr %f ms \n",i, - ((double)(EG_ENT<AR_TABLE[i]) * (1000.0 / OPL->rate), - ((double)(EG_ENT<DR_TABLE[i]) * (1000.0 / OPL->rate) )); - } -#endif -} + /* Phase generation is based on: */ + /* HH (13) channel 7->slot 1 combined with channel 8->slot 2 (same combination as TOP CYMBAL but different output phases) */ + /* SD (16) channel 7->slot 1 */ + /* TOM (14) channel 8->slot 1 */ + /* TOP (17) channel 7->slot 1 combined with channel 8->slot 2 (same combination as HIGH HAT but different output phases) */ -/* ---------- generic table initialize ---------- */ -static int OPLOpenTable( void ) -{ - int s,t; - double rate; - int i,j; - double pom; + /* Envelope generation based on: */ + /* HH channel 7->slot1 */ + /* SD channel 7->slot2 */ + /* TOM channel 8->slot1 */ + /* TOP channel 8->slot2 */ - /* allocate dynamic tables */ - if( (TL_TABLE = malloc(TL_MAX*2*sizeof(INT32))) == NULL) - return 0; - if( (SIN_TABLE = malloc(SIN_ENT*4 *sizeof(INT32 *))) == NULL) + + /* The following formulas can be well optimized. + I leave them in direct form for now (in case I've missed something). + */ + + /* High Hat (verified on real YM3812) */ + env = volume_calc(SLOT7_1); + if( env < ENV_QUIET ) { - free(TL_TABLE); - return 0; + + /* high hat phase generation: + phase = d0 or 234 (based on frequency only) + phase = 34 or 2d0 (based on noise) + */ + + /* base frequency derived from operator 1 in channel 7 */ + unsigned char bit7 = ((SLOT7_1->Cnt>>FREQ_SH)>>7)&1; + unsigned char bit3 = ((SLOT7_1->Cnt>>FREQ_SH)>>3)&1; + unsigned char bit2 = ((SLOT7_1->Cnt>>FREQ_SH)>>2)&1; + + unsigned char res1 = (bit2 ^ bit7) | bit3; + + /* when res1 = 0 phase = 0x000 | 0xd0; */ + /* when res1 = 1 phase = 0x200 | (0xd0>>2); */ + UINT32 phase = res1 ? (0x200|(0xd0>>2)) : 0xd0; + + /* enable gate based on frequency of operator 2 in channel 8 */ + unsigned char bit5e= ((SLOT8_2->Cnt>>FREQ_SH)>>5)&1; + unsigned char bit3e= ((SLOT8_2->Cnt>>FREQ_SH)>>3)&1; + + unsigned char res2 = (bit3e ^ bit5e); + + /* when res2 = 0 pass the phase from calculation above (res1); */ + /* when res2 = 1 phase = 0x200 | (0xd0>>2); */ + if (res2) + phase = (0x200|(0xd0>>2)); + + + /* when phase & 0x200 is set and noise=1 then phase = 0x200|0xd0 */ + /* when phase & 0x200 is set and noise=0 then phase = 0x200|(0xd0>>2), ie no change */ + if (phase&0x200) + { + if (noise) + phase = 0x200|0xd0; + } + else + /* when phase & 0x200 is clear and noise=1 then phase = 0xd0>>2 */ + /* when phase & 0x200 is clear and noise=0 then phase = 0xd0, ie no change */ + { + if (noise) + phase = 0xd0>>2; + } + + output[0] += op_calc(phase<wavetable) * 2; } - if( (AMS_TABLE = malloc(AMS_ENT*2 *sizeof(INT32))) == NULL) + + /* Snare Drum (verified on real YM3812) */ + env = volume_calc(SLOT7_2); + if( env < ENV_QUIET ) { - free(TL_TABLE); - free(SIN_TABLE); - return 0; + /* base frequency derived from operator 1 in channel 7 */ + unsigned char bit8 = ((SLOT7_1->Cnt>>FREQ_SH)>>8)&1; + + /* when bit8 = 0 phase = 0x100; */ + /* when bit8 = 1 phase = 0x200; */ + UINT32 phase = bit8 ? 0x200 : 0x100; + + /* Noise bit XOR'es phase by 0x100 */ + /* when noisebit = 0 pass the phase from calculation above */ + /* when noisebit = 1 phase ^= 0x100; */ + /* in other words: phase ^= (noisebit<<8); */ + if (noise) + phase ^= 0x100; + + output[0] += op_calc(phase<wavetable) * 2; } - if( (VIB_TABLE = malloc(VIB_ENT*2 *sizeof(INT32))) == NULL) + + /* Tom Tom (verified on real YM3812) */ + env = volume_calc(SLOT8_1); + if( env < ENV_QUIET ) + output[0] += op_calc(SLOT8_1->Cnt, env, 0, SLOT8_1->wavetable) * 2; + + /* Top Cymbal (verified on real YM3812) */ + env = volume_calc(SLOT8_2); + if( env < ENV_QUIET ) { - free(TL_TABLE); - free(SIN_TABLE); - free(AMS_TABLE); - return 0; - } - /* make total level table */ - for (t = 0;t < EG_ENT-1 ;t++){ - rate = ((1< voltage */ - TL_TABLE[ t] = (int)rate; - TL_TABLE[TL_MAX+t] = -TL_TABLE[t]; -/* LOG(LOG_INF,("TotalLevel(%3d) = %x\n",t,TL_TABLE[t]));*/ - } - /* fill volume off area */ - for ( t = EG_ENT-1; t < TL_MAX ;t++){ - TL_TABLE[t] = TL_TABLE[TL_MAX+t] = 0; - } - - /* make sinwave table (total level offet) */ - /* degree 0 = degree 180 = off */ - SIN_TABLE[0] = SIN_TABLE[SIN_ENT/2] = &TL_TABLE[EG_ENT-1]; - for (s = 1;s <= SIN_ENT/4;s++){ - pom = sin(2*PI*s/SIN_ENT); /* sin */ - pom = 20*log10(1/pom); /* decibel */ - j = pom / EG_STEP; /* TL_TABLE steps */ - - /* degree 0 - 90 , degree 180 - 90 : plus section */ - SIN_TABLE[ s] = SIN_TABLE[SIN_ENT/2-s] = &TL_TABLE[j]; - /* degree 180 - 270 , degree 360 - 270 : minus section */ - SIN_TABLE[SIN_ENT/2+s] = SIN_TABLE[SIN_ENT -s] = &TL_TABLE[TL_MAX+j]; -/* LOG(LOG_INF,("sin(%3d) = %f:%f db\n",s,pom,(double)j * EG_STEP));*/ - } - for (s = 0;s < SIN_ENT;s++) - { - SIN_TABLE[SIN_ENT*1+s] = s<(SIN_ENT/2) ? SIN_TABLE[s] : &TL_TABLE[EG_ENT]; - SIN_TABLE[SIN_ENT*2+s] = SIN_TABLE[s % (SIN_ENT/2)]; - SIN_TABLE[SIN_ENT*3+s] = (s/(SIN_ENT/4))&1 ? &TL_TABLE[EG_ENT] : SIN_TABLE[SIN_ENT*2+s]; - } - - /* envelope counter -> envelope output table */ - for (i=0; i= EG_ENT ) pom = EG_ENT-1; */ - ENV_CURVE[i] = (int)pom; - /* DECAY ,RELEASE curve */ - ENV_CURVE[(EG_DST>>ENV_BITS)+i]= i; - } - /* off */ - ENV_CURVE[EG_OFF>>ENV_BITS]= EG_ENT-1; - /* make LFO ams table */ - for (i=0; iCnt>>FREQ_SH)>>7)&1; + unsigned char bit3 = ((SLOT7_1->Cnt>>FREQ_SH)>>3)&1; + unsigned char bit2 = ((SLOT7_1->Cnt>>FREQ_SH)>>2)&1; + + unsigned char res1 = (bit2 ^ bit7) | bit3; + + /* when res1 = 0 phase = 0x000 | 0x100; */ + /* when res1 = 1 phase = 0x200 | 0x100; */ + UINT32 phase = res1 ? 0x300 : 0x100; + + /* enable gate based on frequency of operator 2 in channel 8 */ + unsigned char bit5e= ((SLOT8_2->Cnt>>FREQ_SH)>>5)&1; + unsigned char bit3e= ((SLOT8_2->Cnt>>FREQ_SH)>>3)&1; + + unsigned char res2 = (bit3e ^ bit5e); + /* when res2 = 0 pass the phase from calculation above (res1); */ + /* when res2 = 1 phase = 0x200 | 0x100; */ + if (res2) + phase = 0x300; + + output[0] += op_calc(phase<wavetable) * 2; } - return 1; + } -static void OPLCloseTable( void ) +/* generic table initialize */ +static int init_tables(void) { - free(TL_TABLE); - free(SIN_TABLE); - free(AMS_TABLE); - free(VIB_TABLE); -} + signed int i,x; + signed int n; + double o,m; -/* CSM Key Controll */ -INLINE void CSMKeyControll(OPL_CH *CH) + + for (x=0; x>= 4; /* 12 bits here */ + if (n&1) /* round to nearest */ + n = (n>>1)+1; + else + n = n>>1; + /* 11 bits here (rounded) */ + n <<= 1; /* 12 bits here (as in real chip) */ + tl_tab[ x*2 + 0 ] = n; + tl_tab[ x*2 + 1 ] = -tl_tab[ x*2 + 0 ]; + + for (i=1; i<12; i++) + { + tl_tab[ x*2+0 + i*2*TL_RES_LEN ] = tl_tab[ x*2+0 ]>>i; + tl_tab[ x*2+1 + i*2*TL_RES_LEN ] = -tl_tab[ x*2+0 + i*2*TL_RES_LEN ]; + } + #if 0 + logerror("tl %04i", x*2); + for (i=0; i<12; i++) + logerror(", [%02i] %5i", i*2, tl_tab[ x*2 /*+1*/ + i*2*TL_RES_LEN ] ); + logerror("\n"); + #endif + } + /*logerror("FMOPL.C: TL_TAB_LEN = %i elements (%i bytes)\n",TL_TAB_LEN, (int)sizeof(tl_tab));*/ + + + for (i=0; i0.0) + o = 8*log(1.0/m)/log(2); /* convert to 'decibels' */ + else + o = 8*log(-1.0/m)/log(2); /* convert to 'decibels' */ + + o = o / (ENV_STEP/4); + + n = (int)(2.0*o); + if (n&1) /* round to nearest */ + n = (n>>1)+1; + else + n = n>>1; + + sin_tab[ i ] = n*2 + (m>=0.0? 0: 1 ); + + /*logerror("FMOPL.C: sin [%4i (hex=%03x)]= %4i (tl_tab value=%5i)\n", i, i, sin_tab[i], tl_tab[sin_tab[i]] );*/ + } + + for (i=0; i>1) ]; + + /* waveform 3: _ _ _ _ */ + /* / |_/ |_/ |_/ |_*/ + /* abs(output only first quarter of the sinus waveform) */ + + if (i & (1<<(SIN_BITS-2)) ) + sin_tab[3*SIN_LEN+i] = TL_TAB_LEN; + else + sin_tab[3*SIN_LEN+i] = sin_tab[i & (SIN_MASK>>2)]; + + /*logerror("FMOPL.C: sin1[%4i]= %4i (tl_tab value=%5i)\n", i, sin_tab[1*SIN_LEN+i], tl_tab[sin_tab[1*SIN_LEN+i]] ); + logerror("FMOPL.C: sin2[%4i]= %4i (tl_tab value=%5i)\n", i, sin_tab[2*SIN_LEN+i], tl_tab[sin_tab[2*SIN_LEN+i]] ); + logerror("FMOPL.C: sin3[%4i]= %4i (tl_tab value=%5i)\n", i, sin_tab[3*SIN_LEN+i], tl_tab[sin_tab[3*SIN_LEN+i]] );*/ + } + /*logerror("FMOPL.C: ENV_QUIET= %08x (dec*8=%i)\n", ENV_QUIET, ENV_QUIET*8 );*/ + + +#ifdef SAVE_SAMPLE + sample[0]=fopen("sampsum.pcm","wb"); +#endif + + return 1; +} + +static void OPLCloseTable( void ) { - OPL_SLOT *slot1 = &CH->SLOT[SLOT1]; - OPL_SLOT *slot2 = &CH->SLOT[SLOT2]; - /* all key off */ - OPL_KEYOFF(slot1); - OPL_KEYOFF(slot2); - /* total level latch */ - slot1->TLL = slot1->TL + (CH->ksl_base>>slot1->ksl); - slot1->TLL = slot1->TL + (CH->ksl_base>>slot1->ksl); - /* key on */ - CH->op1_out[0] = CH->op1_out[1] = 0; - OPL_KEYON(slot1); - OPL_KEYON(slot2); +#ifdef SAVE_SAMPLE + fclose(sample[0]); +#endif } -/* ---------- opl initialize ---------- */ + + static void OPL_initalize(FM_OPL *OPL) { - int fn; + int i; /* frequency base */ - OPL->freqbase = (OPL->rate) ? ((double)OPL->clock / OPL->rate) / 72 : 0; + OPL->freqbase = (OPL->rate) ? ((double)OPL->clock / 72.0) / OPL->rate : 0; +#if 0 + OPL->rate = (double)OPL->clock / 72.0; + OPL->freqbase = 1.0; +#endif + + /*logerror("freqbase=%f\n", OPL->freqbase);*/ + /* Timer base time */ - OPL->TimerBase = 1.0/((double)OPL->clock / 72.0 ); - /* make time tables */ - init_timetables( OPL , OPL_ARRATE , OPL_DRRATE ); + OPL->TimerBase = 1.0 / ((double)OPL->clock / 72.0 ); + /* make fnumber -> increment counter table */ - for( fn=0 ; fn < 1024 ; fn++ ) + for( i=0 ; i < 1024 ; i++ ) + { + /* opn phase increment counter = 20bit */ + OPL->fn_tab[i] = (UINT32)( (double)i * 64 * OPL->freqbase * (1<<(FREQ_SH-10)) ); /* -10 because chip works with 10.10 fixed point, while we use 16.16 */ +#if 0 + logerror("FMOPL.C: fn_tab[%4i] = %08x (dec=%8i)\n", + i, OPL->fn_tab[i]>>6, OPL->fn_tab[i]>>6 ); +#endif + } + +#if 0 + for( i=0 ; i < 16 ; i++ ) + { + logerror("FMOPL.C: sl_tab[%i] = %08x\n", + i, sl_tab[i] ); + } + for( i=0 ; i < 8 ; i++ ) + { + int j; + logerror("FMOPL.C: ksl_tab[oct=%2i] =",i); + for (j=0; j<16; j++) + { + logerror("%08x ", ksl_tab[i*16+j] ); + } + logerror("\n"); + } +#endif + + + /* Amplitude modulation: 27 output levels (triangle waveform); 1 level takes one of: 192, 256 or 448 samples */ + /* One entry from LFO_AM_TABLE lasts for 64 samples */ + OPL->lfo_am_inc = (1.0 / 64.0 ) * (1<freqbase; + + /* Vibrato: 8 output levels (triangle waveform); 1 level takes 1024 samples */ + OPL->lfo_pm_inc = (1.0 / 1024.0) * (1<freqbase; + + /*logerror ("OPL->lfo_am_inc = %8x ; OPL->lfo_pm_inc = %8x\n", OPL->lfo_am_inc, OPL->lfo_pm_inc);*/ + + /* Noise generator: a step takes 1 sample */ + OPL->noise_f = (1.0 / 1.0) * (1<freqbase; + + OPL->eg_timer_add = (1<freqbase; + OPL->eg_timer_overflow = ( 1 ) * (1<eg_timer_add, OPL->eg_timer_overflow);*/ + +} + +INLINE void FM_KEYON(OPL_SLOT *SLOT, UINT32 key_set) +{ + if( !SLOT->key ) + { + /* restart Phase Generator */ + SLOT->Cnt = 0; + /* phase -> Attack */ + SLOT->state = EG_ATT; + } + SLOT->key |= key_set; +} + +INLINE void FM_KEYOFF(OPL_SLOT *SLOT, UINT32 key_clr) +{ + if( SLOT->key ) + { + SLOT->key &= key_clr; + + if( !SLOT->key ) + { + /* phase -> Release */ + if (SLOT->state>EG_REL) + SLOT->state = EG_REL; + } + } +} + +/* update phase increment counter of operator (also update the EG rates if necessary) */ +INLINE void CALC_FCSLOT(OPL_CH *CH,OPL_SLOT *SLOT) +{ + int ksr; + + /* (frequency) phase increment counter */ + SLOT->Incr = CH->fc * SLOT->mul; + ksr = CH->kcode >> SLOT->KSR; + + if( SLOT->ksr != ksr ) + { + SLOT->ksr = ksr; + + /* calculate envelope generator rates */ + if ((SLOT->ar + SLOT->ksr) < 16+62) + { + SLOT->eg_sh_ar = eg_rate_shift [SLOT->ar + SLOT->ksr ]; + SLOT->eg_sel_ar = eg_rate_select[SLOT->ar + SLOT->ksr ]; + } + else + { + SLOT->eg_sh_ar = 0; + SLOT->eg_sel_ar = 13*RATE_STEPS; + } + SLOT->eg_sh_dr = eg_rate_shift [SLOT->dr + SLOT->ksr ]; + SLOT->eg_sel_dr = eg_rate_select[SLOT->dr + SLOT->ksr ]; + SLOT->eg_sh_rr = eg_rate_shift [SLOT->rr + SLOT->ksr ]; + SLOT->eg_sel_rr = eg_rate_select[SLOT->rr + SLOT->ksr ]; + } +} + +/* set multi,am,vib,EG-TYP,KSR,mul */ +INLINE void set_mul(FM_OPL *OPL,int slot,int v) +{ + OPL_CH *CH = &OPL->P_CH[slot/2]; + OPL_SLOT *SLOT = &CH->SLOT[slot&1]; + + SLOT->mul = mul_tab[v&0x0f]; + SLOT->KSR = (v&0x10) ? 0 : 2; + SLOT->eg_type = (v&0x20); + SLOT->vib = (v&0x40); + SLOT->AMmask = (v&0x80) ? ~0 : 0; + CALC_FCSLOT(CH,SLOT); +} + +/* set ksl & tl */ +INLINE void set_ksl_tl(FM_OPL *OPL,int slot,int v) +{ + OPL_CH *CH = &OPL->P_CH[slot/2]; + OPL_SLOT *SLOT = &CH->SLOT[slot&1]; + int ksl = v>>6; /* 0 / 1.5 / 3.0 / 6.0 dB/OCT */ + + SLOT->ksl = ksl ? 3-ksl : 31; + SLOT->TL = (v&0x3f)<<(ENV_BITS-1-7); /* 7 bits TL (bit 6 = always 0) */ + + SLOT->TLL = SLOT->TL + (CH->ksl_base>>SLOT->ksl); +} + +/* set attack rate & decay rate */ +INLINE void set_ar_dr(FM_OPL *OPL,int slot,int v) +{ + OPL_CH *CH = &OPL->P_CH[slot/2]; + OPL_SLOT *SLOT = &CH->SLOT[slot&1]; + + SLOT->ar = (v>>4) ? 16 + ((v>>4) <<2) : 0; + + if ((SLOT->ar + SLOT->ksr) < 16+62) + { + SLOT->eg_sh_ar = eg_rate_shift [SLOT->ar + SLOT->ksr ]; + SLOT->eg_sel_ar = eg_rate_select[SLOT->ar + SLOT->ksr ]; + } + else { - OPL->FN_TABLE[fn] = OPL->freqbase * fn * FREQ_RATE * (1<<7) / 2; + SLOT->eg_sh_ar = 0; + SLOT->eg_sel_ar = 13*RATE_STEPS; } - /* LFO freq.table */ - OPL->amsIncr = OPL->rate ? (double)AMS_ENT*(1<rate * 3.7 * ((double)OPL->clock/3600000) : 0; - OPL->vibIncr = OPL->rate ? (double)VIB_ENT*(1<rate * 6.4 * ((double)OPL->clock/3600000) : 0; + + SLOT->dr = (v&0x0f)? 16 + ((v&0x0f)<<2) : 0; + SLOT->eg_sh_dr = eg_rate_shift [SLOT->dr + SLOT->ksr ]; + SLOT->eg_sel_dr = eg_rate_select[SLOT->dr + SLOT->ksr ]; +} + +/* set sustain level & release rate */ +INLINE void set_sl_rr(FM_OPL *OPL,int slot,int v) +{ + OPL_CH *CH = &OPL->P_CH[slot/2]; + OPL_SLOT *SLOT = &CH->SLOT[slot&1]; + + SLOT->sl = sl_tab[ v>>4 ]; + + SLOT->rr = (v&0x0f)? 16 + ((v&0x0f)<<2) : 0; + SLOT->eg_sh_rr = eg_rate_shift [SLOT->rr + SLOT->ksr ]; + SLOT->eg_sel_rr = eg_rate_select[SLOT->rr + SLOT->ksr ]; } -/* ---------- write a OPL registers ---------- */ + +/* write a value v to register r on OPL chip */ static void OPLWriteReg(FM_OPL *OPL, int r, int v) { OPL_CH *CH; int slot; int block_fnum; + + /* adjust bus to 8 bits */ + r &= 0xff; + v &= 0xff; + +#ifdef LOG_CYM_FILE + if ((cymfile) && (r!=0) ) + { + fputc( (unsigned char)r, cymfile ); + fputc( (unsigned char)v, cymfile ); + } +#endif + + switch(r&0xe0) { - case 0x00: /* 00-1f:controll */ + case 0x00: /* 00-1f:control */ switch(r&0x1f) { - case 0x01: - /* wave selector enable */ + case 0x01: /* waveform select enable */ if(OPL->type&OPL_TYPE_WAVESEL) { OPL->wavesel = v&0x20; - if(!OPL->wavesel) - { - /* preset compatible mode */ - int c; - for(c=0;cmax_ch;c++) - { - OPL->P_CH[c].SLOT[SLOT1].wavetable = &SIN_TABLE[0]; - OPL->P_CH[c].SLOT[SLOT2].wavetable = &SIN_TABLE[0]; - } - } + /* do not change the waveform previously selected */ } - return; + break; case 0x02: /* Timer 1 */ OPL->T[0] = (256-v)*4; break; case 0x03: /* Timer 2 */ OPL->T[1] = (256-v)*16; - return; + break; case 0x04: /* IRQ clear / mask and Timer enable */ if(v&0x80) { /* IRQ flag clear */ - OPL_STATUS_RESET(OPL,0x7f); + OPL_STATUS_RESET(OPL,0x7f-0x08); /* don't reset BFRDY flag or we will have to call deltat module to set the flag */ } else { /* set IRQ mask ,timer enable*/ UINT8 st1 = v&1; UINT8 st2 = (v>>1)&1; + /* IRQRST,T1MSK,t2MSK,EOSMSK,BRMSK,x,ST2,ST1 */ - OPL_STATUS_RESET(OPL,v&0x78); - OPL_STATUSMASK_SET(OPL,((~v)&0x78)|0x01); + OPL_STATUS_RESET(OPL, v & (0x78-0x08) ); + OPL_STATUSMASK_SET(OPL, (~v) & 0x78 ); + /* timer 2 */ if(OPL->st[1] != st2) { @@ -812,7 +1525,7 @@ if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam+0,interval); } } - return; + break; #if BUILD_Y8950 case 0x06: /* Key Board OUT */ if(OPL->type&OPL_TYPE_KEYBOARD) @@ -820,38 +1533,47 @@ if(OPL->keyboardhandler_w) OPL->keyboardhandler_w(OPL->keyboard_param,v); else - LOG(LOG_WAR,("OPL:write unmapped KEYBOARD port\n")); + logerror("Y8950: write unmapped KEYBOARD port\n"); } - return; - case 0x07: /* DELTA-T controll : START,REC,MEMDATA,REPT,SPOFF,x,x,RST */ + break; + case 0x07: /* DELTA-T control 1 : START,REC,MEMDATA,REPT,SPOFF,x,x,RST */ if(OPL->type&OPL_TYPE_ADPCM) YM_DELTAT_ADPCM_Write(OPL->deltat,r-0x07,v); - return; - case 0x08: /* MODE,DELTA-T : CSM,NOTESEL,x,x,smpl,da/ad,64k,rom */ + break; +#endif + case 0x08: /* MODE,DELTA-T control 2 : CSM,NOTESEL,x,x,smpl,da/ad,64k,rom */ OPL->mode = v; - v&=0x1f; /* for DELTA-T unit */ +#if BUILD_Y8950 + if(OPL->type&OPL_TYPE_ADPCM) + YM_DELTAT_ADPCM_Write(OPL->deltat,r-0x07,v&0x0f); /* mask 4 LSBs in register 08 for DELTA-T unit */ +#endif + break; + +#if BUILD_Y8950 case 0x09: /* START ADD */ case 0x0a: case 0x0b: /* STOP ADD */ case 0x0c: case 0x0d: /* PRESCALE */ case 0x0e: - case 0x0f: /* ADPCM data */ + case 0x0f: /* ADPCM data write */ case 0x10: /* DELTA-N */ case 0x11: /* DELTA-N */ - case 0x12: /* EG-CTRL */ + case 0x12: /* ADPCM volume */ if(OPL->type&OPL_TYPE_ADPCM) YM_DELTAT_ADPCM_Write(OPL->deltat,r-0x07,v); - return; -#if 0 - case 0x15: /* DAC data */ - case 0x16: - case 0x17: /* SHIFT */ - return; + break; + + case 0x15: /* DAC data high 8 bits (F7,F6...F2) */ + case 0x16: /* DAC data low 2 bits (F1, F0 in bits 7,6) */ + case 0x17: /* DAC data shift (S2,S1,S0 in bits 2,1,0) */ + logerror("FMOPL.C: DAC data register written, but not implemented reg=%02x val=%02x\n",r,v); + break; + case 0x18: /* I/O CTRL (Direction) */ if(OPL->type&OPL_TYPE_IO) OPL->portDirection = v&0x0f; - return; + break; case 0x19: /* I/O DATA */ if(OPL->type&OPL_TYPE_IO) { @@ -859,87 +1581,80 @@ if(OPL->porthandler_w) OPL->porthandler_w(OPL->port_param,v&OPL->portDirection); } - return; - case 0x1a: /* PCM data */ - return; -#endif + break; #endif + default: +// logerror("FMOPL.C: write to unknown register: %02x\n",r); + break; } break; - case 0x20: /* am,vib,ksr,eg type,mul */ + case 0x20: /* am ON, vib ON, ksr, eg_type, mul */ slot = slot_array[r&0x1f]; - if(slot == -1) return; + if(slot < 0) return; set_mul(OPL,slot,v); - return; + break; case 0x40: slot = slot_array[r&0x1f]; - if(slot == -1) return; + if(slot < 0) return; set_ksl_tl(OPL,slot,v); - return; + break; case 0x60: slot = slot_array[r&0x1f]; - if(slot == -1) return; + if(slot < 0) return; set_ar_dr(OPL,slot,v); - return; + break; case 0x80: slot = slot_array[r&0x1f]; - if(slot == -1) return; + if(slot < 0) return; set_sl_rr(OPL,slot,v); - return; + break; case 0xa0: - switch(r) + if (r == 0xbd) /* am depth, vibrato depth, r,bd,sd,tom,tc,hh */ { - case 0xbd: - /* amsep,vibdep,r,bd,sd,tom,tc,hh */ - { - UINT8 rkey = OPL->rythm^v; - OPL->ams_table = &AMS_TABLE[v&0x80 ? AMS_ENT : 0]; - OPL->vib_table = &VIB_TABLE[v&0x40 ? VIB_ENT : 0]; - OPL->rythm = v&0x3f; - if(OPL->rythm&0x20) + OPL->lfo_am_depth = v & 0x80; + OPL->lfo_pm_depth_range = (v&0x40) ? 8 : 0; + + OPL->rhythm = v&0x3f; + + if(OPL->rhythm&0x20) { -#if 0 - usrintf_showmessage("OPL Rythm mode select"); -#endif /* BD key on/off */ - if(rkey&0x10) - { - if(v&0x10) - { - OPL->P_CH[6].op1_out[0] = OPL->P_CH[6].op1_out[1] = 0; - OPL_KEYON(&OPL->P_CH[6].SLOT[SLOT1]); - OPL_KEYON(&OPL->P_CH[6].SLOT[SLOT2]); - } - else - { - OPL_KEYOFF(&OPL->P_CH[6].SLOT[SLOT1]); - OPL_KEYOFF(&OPL->P_CH[6].SLOT[SLOT2]); - } - } - /* SD key on/off */ - if(rkey&0x08) + if(v&0x10) { - if(v&0x08) OPL_KEYON(&OPL->P_CH[7].SLOT[SLOT2]); - else OPL_KEYOFF(&OPL->P_CH[7].SLOT[SLOT2]); - }/* TAM key on/off */ - if(rkey&0x04) - { - if(v&0x04) OPL_KEYON(&OPL->P_CH[8].SLOT[SLOT1]); - else OPL_KEYOFF(&OPL->P_CH[8].SLOT[SLOT1]); + FM_KEYON (&OPL->P_CH[6].SLOT[SLOT1], 2); + FM_KEYON (&OPL->P_CH[6].SLOT[SLOT2], 2); } - /* TOP-CY key on/off */ - if(rkey&0x02) + else { - if(v&0x02) OPL_KEYON(&OPL->P_CH[8].SLOT[SLOT2]); - else OPL_KEYOFF(&OPL->P_CH[8].SLOT[SLOT2]); + FM_KEYOFF(&OPL->P_CH[6].SLOT[SLOT1],~2); + FM_KEYOFF(&OPL->P_CH[6].SLOT[SLOT2],~2); } /* HH key on/off */ - if(rkey&0x01) - { - if(v&0x01) OPL_KEYON(&OPL->P_CH[7].SLOT[SLOT1]); - else OPL_KEYOFF(&OPL->P_CH[7].SLOT[SLOT1]); - } + if(v&0x01) FM_KEYON (&OPL->P_CH[7].SLOT[SLOT1], 2); + else FM_KEYOFF(&OPL->P_CH[7].SLOT[SLOT1],~2); + /* SD key on/off */ + if(v&0x08) FM_KEYON (&OPL->P_CH[7].SLOT[SLOT2], 2); + else FM_KEYOFF(&OPL->P_CH[7].SLOT[SLOT2],~2); + /* TOM key on/off */ + if(v&0x04) FM_KEYON (&OPL->P_CH[8].SLOT[SLOT1], 2); + else FM_KEYOFF(&OPL->P_CH[8].SLOT[SLOT1],~2); + /* TOP-CY key on/off */ + if(v&0x02) FM_KEYON (&OPL->P_CH[8].SLOT[SLOT2], 2); + else FM_KEYOFF(&OPL->P_CH[8].SLOT[SLOT2],~2); } + else + { + /* BD key off */ + FM_KEYOFF(&OPL->P_CH[6].SLOT[SLOT1],~2); + FM_KEYOFF(&OPL->P_CH[6].SLOT[SLOT2],~2); + /* HH key off */ + FM_KEYOFF(&OPL->P_CH[7].SLOT[SLOT1],~2); + /* SD key off */ + FM_KEYOFF(&OPL->P_CH[7].SLOT[SLOT2],~2); + /* TOM key off */ + FM_KEYOFF(&OPL->P_CH[8].SLOT[SLOT1],~2); + /* TOP-CY off */ + FM_KEYOFF(&OPL->P_CH[8].SLOT[SLOT2],~2); } return; } @@ -952,75 +1667,105 @@ } else { /* b0-b8 */ - int keyon = (v>>5)&1; block_fnum = ((v&0x1f)<<8) | (CH->block_fnum&0xff); - if(CH->keyon != keyon) + + if(v&0x20) { - if( (CH->keyon=keyon) ) - { - CH->op1_out[0] = CH->op1_out[1] = 0; - OPL_KEYON(&CH->SLOT[SLOT1]); - OPL_KEYON(&CH->SLOT[SLOT2]); - } - else - { - OPL_KEYOFF(&CH->SLOT[SLOT1]); - OPL_KEYOFF(&CH->SLOT[SLOT2]); - } + FM_KEYON (&CH->SLOT[SLOT1], 1); + FM_KEYON (&CH->SLOT[SLOT2], 1); + } + else + { + FM_KEYOFF(&CH->SLOT[SLOT1],~1); + FM_KEYOFF(&CH->SLOT[SLOT2],~1); } } /* update */ if(CH->block_fnum != block_fnum) { - int blockRv = 7-(block_fnum>>10); - int fnum = block_fnum&0x3ff; + UINT8 block = block_fnum >> 10; + CH->block_fnum = block_fnum; - CH->ksl_base = KSL_TABLE[block_fnum>>6]; - CH->fc = OPL->FN_TABLE[fnum]>>blockRv; - CH->kcode = CH->block_fnum>>9; - if( (OPL->mode&0x40) && CH->block_fnum&0x100) CH->kcode |=1; + CH->ksl_base = ksl_tab[block_fnum>>6]; + CH->fc = OPL->fn_tab[block_fnum&0x03ff] >> (7-block); + + /* BLK 2,1,0 bits -> bits 3,2,1 of kcode */ + CH->kcode = (CH->block_fnum&0x1c00)>>9; + + /* the info below is actually opposite to what is stated in the Manuals (verifed on real YM3812) */ + /* if notesel == 0 -> lsb of kcode is bit 10 (MSB) of fnum */ + /* if notesel == 1 -> lsb of kcode is bit 9 (MSB-1) of fnum */ + if (OPL->mode&0x40) + CH->kcode |= (CH->block_fnum&0x100)>>8; /* notesel == 1 */ + else + CH->kcode |= (CH->block_fnum&0x200)>>9; /* notesel == 0 */ + + /* refresh Total Level in both SLOTs of this channel */ + CH->SLOT[SLOT1].TLL = CH->SLOT[SLOT1].TL + (CH->ksl_base>>CH->SLOT[SLOT1].ksl); + CH->SLOT[SLOT2].TLL = CH->SLOT[SLOT2].TL + (CH->ksl_base>>CH->SLOT[SLOT2].ksl); + + /* refresh frequency counter in both SLOTs of this channel */ CALC_FCSLOT(CH,&CH->SLOT[SLOT1]); CALC_FCSLOT(CH,&CH->SLOT[SLOT2]); } - return; + break; case 0xc0: /* FB,C */ if( (r&0x0f) > 8) return; CH = &OPL->P_CH[r&0x0f]; - { - int feedback = (v>>1)&7; - CH->FB = feedback ? (8+1) - feedback : 0; - CH->CON = v&1; - set_algorythm(CH); - } - return; - case 0xe0: /* wave type */ - slot = slot_array[r&0x1f]; - if(slot == -1) return; - CH = &OPL->P_CH[slot/2]; + CH->SLOT[SLOT1].FB = (v>>1)&7 ? ((v>>1)&7) + 7 : 0; + CH->SLOT[SLOT1].CON = v&1; + CH->SLOT[SLOT1].connect1 = CH->SLOT[SLOT1].CON ? &output[0] : &phase_modulation; + break; + case 0xe0: /* waveform select */ + /* simply ignore write to the waveform select register if selecting not enabled in test register */ if(OPL->wavesel) { - /* LOG(LOG_INF,("OPL SLOT %d wave select %d\n",slot,v&3)); */ - CH->SLOT[slot&1].wavetable = &SIN_TABLE[(v&0x03)*SIN_ENT]; + slot = slot_array[r&0x1f]; + if(slot < 0) return; + CH = &OPL->P_CH[slot/2]; + + CH->SLOT[slot&1].wavetable = (v&0x03)*SIN_LEN; } - return; + break; + } +} + +#ifdef LOG_CYM_FILE +static void cymfile_callback (int n) +{ + if (cymfile) + { + fputc( (unsigned char)0, cymfile ); } } +#endif /* lock/unlock for common table */ static int OPL_LockTable(void) { num_lock++; if(num_lock>1) return 0; + /* first time */ + cur_chip = NULL; /* allocate total level table (128kb space) */ - if( !OPLOpenTable() ) + if( !init_tables() ) { num_lock--; return -1; } + +#ifdef LOG_CYM_FILE + cymfile = fopen("3812_.cym","wb"); + if (cymfile) + timer_pulse ( TIME_IN_HZ(110), 0, cymfile_callback); /*110 Hz pulse timer*/ + else + logerror("Could not create file 3812_.cym\n"); +#endif + return 0; } @@ -1028,166 +1773,48 @@ { if(num_lock) num_lock--; if(num_lock) return; + /* last time */ + cur_chip = NULL; OPLCloseTable(); + +#ifdef LOG_CYM_FILE + fclose (cymfile); + cymfile = NULL; +#endif + } -#if (BUILD_YM3812 || BUILD_YM3526) -/*******************************************************************************/ -/* YM3812 local section */ -/*******************************************************************************/ - -/* ---------- update one of chip ----------- */ -void YM3812UpdateOne(FM_OPL *OPL, INT16 *buffer, int length) -{ - int i; - int data; - OPLSAMPLE *buf = buffer; - UINT32 amsCnt = OPL->amsCnt; - UINT32 vibCnt = OPL->vibCnt; - UINT8 rythm = OPL->rythm&0x20; - OPL_CH *CH,*R_CH; +static void OPLResetChip(FM_OPL *OPL) +{ + int c,s; + int i; - if( (void *)OPL != cur_chip ){ - cur_chip = (void *)OPL; - /* channel pointers */ - S_CH = OPL->P_CH; - E_CH = &S_CH[9]; - /* rythm slot */ - SLOT7_1 = &S_CH[7].SLOT[SLOT1]; - SLOT7_2 = &S_CH[7].SLOT[SLOT2]; - SLOT8_1 = &S_CH[8].SLOT[SLOT1]; - SLOT8_2 = &S_CH[8].SLOT[SLOT2]; - /* LFO state */ - amsIncr = OPL->amsIncr; - vibIncr = OPL->vibIncr; - ams_table = OPL->ams_table; - vib_table = OPL->vib_table; - } - R_CH = rythm ? &S_CH[6] : E_CH; - for( i=0; i < length ; i++ ) - { - /* channel A channel B channel C */ - /* LFO */ - ams = ams_table[(amsCnt+=amsIncr)>>AMS_SHIFT]; - vib = vib_table[(vibCnt+=vibIncr)>>VIB_SHIFT]; - outd[0] = 0; - /* FM part */ - for(CH=S_CH ; CH < R_CH ; CH++) - OPL_CALC_CH(CH); - /* Rythn part */ - if(rythm) - OPL_CALC_RH(S_CH); - /* limit check */ - data = Limit( outd[0] , OPL_MAXOUT, OPL_MINOUT ); - /* store to sound buffer */ - buf[i] = data >> OPL_OUTSB; - } - - OPL->amsCnt = amsCnt; - OPL->vibCnt = vibCnt; -#ifdef OPL_OUTPUT_LOG - if(opl_dbg_fp) - { - for(opl_dbg_chip=0;opl_dbg_chipamsCnt; - UINT32 vibCnt = OPL->vibCnt; - UINT8 rythm = OPL->rythm&0x20; - OPL_CH *CH,*R_CH; - YM_DELTAT *DELTAT = OPL->deltat; - - /* setup DELTA-T unit */ - YM_DELTAT_DECODE_PRESET(DELTAT); - - if( (void *)OPL != cur_chip ){ - cur_chip = (void *)OPL; - /* channel pointers */ - S_CH = OPL->P_CH; - E_CH = &S_CH[9]; - /* rythm slot */ - SLOT7_1 = &S_CH[7].SLOT[SLOT1]; - SLOT7_2 = &S_CH[7].SLOT[SLOT2]; - SLOT8_1 = &S_CH[8].SLOT[SLOT1]; - SLOT8_2 = &S_CH[8].SLOT[SLOT2]; - /* LFO state */ - amsIncr = OPL->amsIncr; - vibIncr = OPL->vibIncr; - ams_table = OPL->ams_table; - vib_table = OPL->vib_table; - } - R_CH = rythm ? &S_CH[6] : E_CH; - for( i=0; i < length ; i++ ) - { - /* channel A channel B channel C */ - /* LFO */ - ams = ams_table[(amsCnt+=amsIncr)>>AMS_SHIFT]; - vib = vib_table[(vibCnt+=vibIncr)>>VIB_SHIFT]; - outd[0] = 0; - /* deltaT ADPCM */ - if( DELTAT->portstate ) - YM_DELTAT_ADPCM_CALC(DELTAT); - /* FM part */ - for(CH=S_CH ; CH < R_CH ; CH++) - OPL_CALC_CH(CH); - /* Rythn part */ - if(rythm) - OPL_CALC_RH(S_CH); - /* limit check */ - data = Limit( outd[0] , OPL_MAXOUT, OPL_MINOUT ); - /* store to sound buffer */ - buf[i] = data >> OPL_OUTSB; - } - OPL->amsCnt = amsCnt; - OPL->vibCnt = vibCnt; - /* deltaT START flag */ - if( !DELTAT->portstate ) - OPL->status &= 0xfe; -} -#endif + OPL->eg_timer = 0; + OPL->eg_cnt = 0; -/* ---------- reset one of chip ---------- */ -void OPLResetChip(FM_OPL *OPL) -{ - int c,s; - int i; - - /* reset chip */ + OPL->noise_rng = 1; /* noise shift register */ OPL->mode = 0; /* normal mode */ OPL_STATUS_RESET(OPL,0x7f); + /* reset with register write */ - OPLWriteReg(OPL,0x01,0); /* wabesel disable */ + OPLWriteReg(OPL,0x01,0); /* wavesel disable */ OPLWriteReg(OPL,0x02,0); /* Timer1 */ OPLWriteReg(OPL,0x03,0); /* Timer2 */ OPLWriteReg(OPL,0x04,0); /* IRQ mask clear */ for(i = 0xff ; i >= 0x20 ; i-- ) OPLWriteReg(OPL,i,0); - /* reset OPerator paramater */ - for( c = 0 ; c < OPL->max_ch ; c++ ) + + /* reset operator parameters */ + for( c = 0 ; c < 9 ; c++ ) { OPL_CH *CH = &OPL->P_CH[c]; - /* OPL->P_CH[c].PAN = OPN_CENTER; */ for(s = 0 ; s < 2 ; s++ ) { /* wave table */ - CH->SLOT[s].wavetable = &SIN_TABLE[0]; - /* CH->SLOT[s].evm = ENV_MOD_RR; */ - CH->SLOT[s].evc = EG_OFF; - CH->SLOT[s].eve = EG_OFF+1; - CH->SLOT[s].evs = 0; + CH->SLOT[s].wavetable = 0; + CH->SLOT[s].state = EG_OFF; + CH->SLOT[s].volume = MAX_ATT_INDEX; } } #if BUILD_Y8950 @@ -1196,118 +1823,89 @@ YM_DELTAT *DELTAT = OPL->deltat; DELTAT->freqbase = OPL->freqbase; - DELTAT->output_pointer = outd; + DELTAT->output_pointer = &output_deltat[0]; DELTAT->portshift = 5; - DELTAT->output_range = DELTAT_MIXING_LEVEL<output_range = 1<<23; + YM_DELTAT_ADPCM_Reset(DELTAT,0,YM_DELTAT_EMULATION_MODE_NORMAL); } #endif } -/* ---------- Create one of vietual YM3812 ---------- */ -/* 'rate' is sampling rate and 'bufsiz' is the size of the */ -FM_OPL *OPLCreate(int type, int clock, int rate) +/* Create one of virtual YM3812/YM3526/Y8950 */ +/* 'clock' is chip clock in Hz */ +/* 'rate' is sampling rate */ +static FM_OPL *OPLCreate(int type, int clock, int rate) { char *ptr; FM_OPL *OPL; int state_size; - int max_ch = 9; /* normaly 9 channels */ - if( OPL_LockTable() ==-1) return NULL; - /* allocate OPL state space */ + if (OPL_LockTable() ==-1) return NULL; + + /* calculate OPL state size */ state_size = sizeof(FM_OPL); - state_size += sizeof(OPL_CH)*max_ch; + #if BUILD_Y8950 - if(type&OPL_TYPE_ADPCM) state_size+= sizeof(YM_DELTAT); + if (type&OPL_TYPE_ADPCM) state_size+= sizeof(YM_DELTAT); #endif + /* allocate memory block */ ptr = malloc(state_size); - if(ptr==NULL) return NULL; + + if (ptr==NULL) + return NULL; + /* clear */ memset(ptr,0,state_size); - OPL = (FM_OPL *)ptr; ptr+=sizeof(FM_OPL); - OPL->P_CH = (OPL_CH *)ptr; ptr+=sizeof(OPL_CH)*max_ch; + + OPL = (FM_OPL *)ptr; + + ptr += sizeof(FM_OPL); + #if BUILD_Y8950 - if(type&OPL_TYPE_ADPCM) OPL->deltat = (YM_DELTAT *)ptr; ptr+=sizeof(YM_DELTAT); + if (type&OPL_TYPE_ADPCM) + { + OPL->deltat = (YM_DELTAT *)ptr; + } + ptr += sizeof(YM_DELTAT); #endif - /* set channel state pointer */ + OPL->type = type; OPL->clock = clock; OPL->rate = rate; - OPL->max_ch = max_ch; - /* init grobal tables */ + + /* init global tables */ OPL_initalize(OPL); - /* reset chip */ - OPLResetChip(OPL); -#ifdef OPL_OUTPUT_LOG - if(!opl_dbg_fp) - { - opl_dbg_fp = fopen("opllog.opl","wb"); - opl_dbg_maxchip = 0; - } - if(opl_dbg_fp) - { - opl_dbg_opl[opl_dbg_maxchip] = OPL; - fprintf(opl_dbg_fp,"%c%c%c%c%c%c",0x00+opl_dbg_maxchip, - type, - clock&0xff, - (clock/0x100)&0xff, - (clock/0x10000)&0xff, - (clock/0x1000000)&0xff); - opl_dbg_maxchip++; - } -#endif + return OPL; } -/* ---------- Destroy one of vietual YM3812 ---------- */ -void OPLDestroy(FM_OPL *OPL) +/* Destroy one of virtual YM3812 */ +static void OPLDestroy(FM_OPL *OPL) { -#ifdef OPL_OUTPUT_LOG - if(opl_dbg_fp) - { - fclose(opl_dbg_fp); - opl_dbg_fp = NULL; - } -#endif OPL_UnLockTable(); free(OPL); } -/* ---------- Option handlers ---------- */ +/* Optional handlers */ -void OPLSetTimerHandler(FM_OPL *OPL,OPL_TIMERHANDLER TimerHandler,int channelOffset) +static void OPLSetTimerHandler(FM_OPL *OPL,OPL_TIMERHANDLER TimerHandler,int channelOffset) { OPL->TimerHandler = TimerHandler; OPL->TimerParam = channelOffset; } -void OPLSetIRQHandler(FM_OPL *OPL,OPL_IRQHANDLER IRQHandler,int param) +static void OPLSetIRQHandler(FM_OPL *OPL,OPL_IRQHANDLER IRQHandler,int param) { OPL->IRQHandler = IRQHandler; OPL->IRQParam = param; } -void OPLSetUpdateHandler(FM_OPL *OPL,OPL_UPDATEHANDLER UpdateHandler,int param) +static void OPLSetUpdateHandler(FM_OPL *OPL,OPL_UPDATEHANDLER UpdateHandler,int param) { OPL->UpdateHandler = UpdateHandler; OPL->UpdateParam = param; } -#if BUILD_Y8950 -void OPLSetPortHandler(FM_OPL *OPL,OPL_PORTHANDLER_W PortHandler_w,OPL_PORTHANDLER_R PortHandler_r,int param) -{ - OPL->porthandler_w = PortHandler_w; - OPL->porthandler_r = PortHandler_r; - OPL->port_param = param; -} -void OPLSetKeyboardHandler(FM_OPL *OPL,OPL_PORTHANDLER_W KeyboardHandler_w,OPL_PORTHANDLER_R KeyboardHandler_r,int param) -{ - OPL->keyboardhandler_w = KeyboardHandler_w; - OPL->keyboardhandler_r = KeyboardHandler_r; - OPL->keyboard_param = param; -} -#endif -/* ---------- YM3812 I/O interface ---------- */ -int OPLWrite(FM_OPL *OPL,int a,int v) +static int OPLWrite(FM_OPL *OPL,int a,int v) { if( !(a&1) ) { /* address port */ @@ -1316,25 +1914,31 @@ else { /* data port */ if(OPL->UpdateHandler) OPL->UpdateHandler(OPL->UpdateParam,0); -#ifdef OPL_OUTPUT_LOG - if(opl_dbg_fp) - { - for(opl_dbg_chip=0;opl_dbg_chipaddress,v); - } -#endif OPLWriteReg(OPL,OPL->address,v); } return OPL->status>>7; } -unsigned char OPLRead(FM_OPL *OPL,int a) +static unsigned char OPLRead(FM_OPL *OPL,int a) { if( !(a&1) ) - { /* status port */ + { + /* status port */ + + #if BUILD_Y8950 + + if(OPL->type&OPL_TYPE_ADPCM) /* Y8950 */ + { + return (OPL->status & (OPL->statusmask|0x80)) | (OPL->deltat->PCM_BSY&1); + } + + #endif + + /* OPL and OPL2 */ return OPL->status & (OPL->statusmask|0x80); } + +#if BUILD_Y8950 /* data port */ switch(OPL->address) { @@ -1344,29 +1948,57 @@ if(OPL->keyboardhandler_r) return OPL->keyboardhandler_r(OPL->keyboard_param); else - LOG(LOG_WAR,("OPL:read unmapped KEYBOARD port\n")); + logerror("Y8950: read unmapped KEYBOARD port\n"); } return 0; -#if 0 + case 0x0f: /* ADPCM-DATA */ + if(OPL->type&OPL_TYPE_ADPCM) + { + UINT8 val; + + val = YM_DELTAT_ADPCM_Read(OPL->deltat); + /*logerror("Y8950: read ADPCM value read=%02x\n",val);*/ + return val; + } return 0; -#endif + case 0x19: /* I/O DATA */ if(OPL->type&OPL_TYPE_IO) { if(OPL->porthandler_r) return OPL->porthandler_r(OPL->port_param); else - LOG(LOG_WAR,("OPL:read unmapped I/O port\n")); + logerror("Y8950:read unmapped I/O port\n"); } return 0; case 0x1a: /* PCM-DATA */ + if(OPL->type&OPL_TYPE_ADPCM) + { + logerror("Y8950 A/D convertion is accessed but not implemented !\n"); + return 0x80; /* 2's complement PCM data - result from A/D convertion */ + } return 0; } - return 0; +#endif + + return 0xff; } -int OPLTimerOver(FM_OPL *OPL,int c) +/* CSM Key Controll */ +INLINE void CSMKeyControll(OPL_CH *CH) +{ + FM_KEYON (&CH->SLOT[SLOT1], 4); + FM_KEYON (&CH->SLOT[SLOT2], 4); + + /* The key off should happen exactly one sample later - not implemented correctly yet */ + + FM_KEYOFF(&CH->SLOT[SLOT1], ~4); + FM_KEYOFF(&CH->SLOT[SLOT2], ~4); +} + + +static int OPLTimerOver(FM_OPL *OPL,int c) { if( c ) { /* Timer B */ @@ -1380,7 +2012,7 @@ { /* CSM mode total level latch and auto key on */ int ch; if(OPL->UpdateHandler) OPL->UpdateHandler(OPL->UpdateParam,0); - for(ch=0;ch<9;ch++) + for(ch=0; ch<9; ch++) CSMKeyControll( &OPL->P_CH[ch] ); } } @@ -1388,3 +2020,506 @@ if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam+c,(double)OPL->T[c]*OPL->TimerBase); return OPL->status>>7; } + + +#define MAX_OPL_CHIPS 2 + + +#if (BUILD_YM3812) + +static FM_OPL *OPL_YM3812[MAX_OPL_CHIPS]; /* array of pointers to the YM3812's */ +static int YM3812NumChips = 0; /* number of chips */ + +int YM3812Init(int num, int clock, int rate) +{ + int i; + + if (YM3812NumChips) + return -1; /* duplicate init. */ + + YM3812NumChips = num; + + for (i = 0;i < YM3812NumChips; i++) + { + /* emulator create */ + OPL_YM3812[i] = OPLCreate(OPL_TYPE_YM3812,clock,rate); + if(OPL_YM3812[i] == NULL) + { + /* it's really bad - we run out of memeory */ + YM3812NumChips = 0; + return -1; + } + /* reset */ + YM3812ResetChip(i); + } + + return 0; +} + +void YM3812Shutdown(void) +{ + int i; + + for (i = 0;i < YM3812NumChips; i++) + { + /* emulator shutdown */ + OPLDestroy(OPL_YM3812[i]); + OPL_YM3812[i] = NULL; + } + YM3812NumChips = 0; +} +void YM3812ResetChip(int which) +{ + OPLResetChip(OPL_YM3812[which]); +} + +int YM3812Write(int which, int a, int v) +{ + return OPLWrite(OPL_YM3812[which], a, v); +} + +unsigned char YM3812Read(int which, int a) +{ + /* YM3812 always returns bit2 and bit1 in HIGH state */ + return OPLRead(OPL_YM3812[which], a) | 0x06 ; +} +int YM3812TimerOver(int which, int c) +{ + return OPLTimerOver(OPL_YM3812[which], c); +} + +void YM3812SetTimerHandler(int which, OPL_TIMERHANDLER TimerHandler, int channelOffset) +{ + OPLSetTimerHandler(OPL_YM3812[which], TimerHandler, channelOffset); +} +void YM3812SetIRQHandler(int which,OPL_IRQHANDLER IRQHandler,int param) +{ + OPLSetIRQHandler(OPL_YM3812[which], IRQHandler, param); +} +void YM3812SetUpdateHandler(int which,OPL_UPDATEHANDLER UpdateHandler,int param) +{ + OPLSetUpdateHandler(OPL_YM3812[which], UpdateHandler, param); +} + + +/* +** Generate samples for one of the YM3812's +** +** 'which' is the virtual YM3812 number +** '*buffer' is the output buffer pointer +** 'length' is the number of samples that should be generated +*/ +void YM3812UpdateOne(int which, INT16 *buffer, int length) +{ + FM_OPL *OPL = OPL_YM3812[which]; + UINT8 rhythm = OPL->rhythm&0x20; + OPLSAMPLE *buf = buffer; + int i; + + if( (void *)OPL != cur_chip ){ + cur_chip = (void *)OPL; + /* rhythm slots */ + SLOT7_1 = &OPL->P_CH[7].SLOT[SLOT1]; + SLOT7_2 = &OPL->P_CH[7].SLOT[SLOT2]; + SLOT8_1 = &OPL->P_CH[8].SLOT[SLOT1]; + SLOT8_2 = &OPL->P_CH[8].SLOT[SLOT2]; + } + for( i=0; i < length ; i++ ) + { + int lt; + + output[0] = 0; + + advance_lfo(OPL); + + /* FM part */ + OPL_CALC_CH(&OPL->P_CH[0]); + OPL_CALC_CH(&OPL->P_CH[1]); + OPL_CALC_CH(&OPL->P_CH[2]); + OPL_CALC_CH(&OPL->P_CH[3]); + OPL_CALC_CH(&OPL->P_CH[4]); + OPL_CALC_CH(&OPL->P_CH[5]); + + if(!rhythm) + { + OPL_CALC_CH(&OPL->P_CH[6]); + OPL_CALC_CH(&OPL->P_CH[7]); + OPL_CALC_CH(&OPL->P_CH[8]); + } + else /* Rhythm part */ + { + OPL_CALC_RH(&OPL->P_CH[0], (OPL->noise_rng>>0)&1 ); + } + + lt = output[0]; + + lt >>= FINAL_SH; + + /* limit check */ + lt = limit( lt , MAXOUT, MINOUT ); + + #ifdef SAVE_SAMPLE + if (which==0) + { + SAVE_ALL_CHANNELS + } + #endif + + /* store to sound buffer */ + buf[i] = lt; + + advance(OPL); + } + +} +#endif /* BUILD_YM3812 */ + + + +#if (BUILD_YM3526) + +static FM_OPL *OPL_YM3526[MAX_OPL_CHIPS]; /* array of pointers to the YM3526's */ +static int YM3526NumChips = 0; /* number of chips */ + +int YM3526Init(int num, int clock, int rate) +{ + int i; + + if (YM3526NumChips) + return -1; /* duplicate init. */ + + YM3526NumChips = num; + + for (i = 0;i < YM3526NumChips; i++) + { + /* emulator create */ + OPL_YM3526[i] = OPLCreate(OPL_TYPE_YM3526,clock,rate); + if(OPL_YM3526[i] == NULL) + { + /* it's really bad - we run out of memeory */ + YM3526NumChips = 0; + return -1; + } + /* reset */ + YM3526ResetChip(i); + } + + return 0; +} + +void YM3526Shutdown(void) +{ + int i; + + for (i = 0;i < YM3526NumChips; i++) + { + /* emulator shutdown */ + OPLDestroy(OPL_YM3526[i]); + OPL_YM3526[i] = NULL; + } + YM3526NumChips = 0; +} +void YM3526ResetChip(int which) +{ + OPLResetChip(OPL_YM3526[which]); +} + +int YM3526Write(int which, int a, int v) +{ + return OPLWrite(OPL_YM3526[which], a, v); +} + +unsigned char YM3526Read(int which, int a) +{ + /* YM3526 always returns bit2 and bit1 in HIGH state */ + return OPLRead(OPL_YM3526[which], a) | 0x06 ; +} +int YM3526TimerOver(int which, int c) +{ + return OPLTimerOver(OPL_YM3526[which], c); +} + +void YM3526SetTimerHandler(int which, OPL_TIMERHANDLER TimerHandler, int channelOffset) +{ + OPLSetTimerHandler(OPL_YM3526[which], TimerHandler, channelOffset); +} +void YM3526SetIRQHandler(int which,OPL_IRQHANDLER IRQHandler,int param) +{ + OPLSetIRQHandler(OPL_YM3526[which], IRQHandler, param); +} +void YM3526SetUpdateHandler(int which,OPL_UPDATEHANDLER UpdateHandler,int param) +{ + OPLSetUpdateHandler(OPL_YM3526[which], UpdateHandler, param); +} + + +/* +** Generate samples for one of the YM3526's +** +** 'which' is the virtual YM3526 number +** '*buffer' is the output buffer pointer +** 'length' is the number of samples that should be generated +*/ +void YM3526UpdateOne(int which, INT16 *buffer, int length) +{ + FM_OPL *OPL = OPL_YM3526[which]; + UINT8 rhythm = OPL->rhythm&0x20; + OPLSAMPLE *buf = buffer; + int i; + + if( (void *)OPL != cur_chip ){ + cur_chip = (void *)OPL; + /* rhythm slots */ + SLOT7_1 = &OPL->P_CH[7].SLOT[SLOT1]; + SLOT7_2 = &OPL->P_CH[7].SLOT[SLOT2]; + SLOT8_1 = &OPL->P_CH[8].SLOT[SLOT1]; + SLOT8_2 = &OPL->P_CH[8].SLOT[SLOT2]; + } + for( i=0; i < length ; i++ ) + { + int lt; + + output[0] = 0; + + advance_lfo(OPL); + + /* FM part */ + OPL_CALC_CH(&OPL->P_CH[0]); + OPL_CALC_CH(&OPL->P_CH[1]); + OPL_CALC_CH(&OPL->P_CH[2]); + OPL_CALC_CH(&OPL->P_CH[3]); + OPL_CALC_CH(&OPL->P_CH[4]); + OPL_CALC_CH(&OPL->P_CH[5]); + + if(!rhythm) + { + OPL_CALC_CH(&OPL->P_CH[6]); + OPL_CALC_CH(&OPL->P_CH[7]); + OPL_CALC_CH(&OPL->P_CH[8]); + } + else /* Rhythm part */ + { + OPL_CALC_RH(&OPL->P_CH[0], (OPL->noise_rng>>0)&1 ); + } + + lt = output[0]; + + lt >>= FINAL_SH; + + /* limit check */ + lt = limit( lt , MAXOUT, MINOUT ); + + #ifdef SAVE_SAMPLE + if (which==0) + { + SAVE_ALL_CHANNELS + } + #endif + + /* store to sound buffer */ + buf[i] = lt; + + advance(OPL); + } + +} +#endif /* BUILD_YM3526 */ + + + + +#if BUILD_Y8950 + +static FM_OPL *OPL_Y8950[MAX_OPL_CHIPS]; /* array of pointers to the Y8950's */ +static int Y8950NumChips = 0; /* number of chips */ + +static void Y8950_deltat_status_set(UINT8 which, UINT8 changebits) +{ + OPL_STATUS_SET(OPL_Y8950[which], changebits); +} +static void Y8950_deltat_status_reset(UINT8 which, UINT8 changebits) +{ + OPL_STATUS_RESET(OPL_Y8950[which], changebits); +} + +int Y8950Init(int num, int clock, int rate) +{ + int i; + + if (Y8950NumChips) + return -1; /* duplicate init. */ + + Y8950NumChips = num; + + for (i = 0;i < Y8950NumChips; i++) + { + /* emulator create */ + OPL_Y8950[i] = OPLCreate(OPL_TYPE_Y8950,clock,rate); + if(OPL_Y8950[i] == NULL) + { + /* it's really bad - we run out of memeory */ + Y8950NumChips = 0; + return -1; + } + OPL_Y8950[i]->deltat->status_set_handler = Y8950_deltat_status_set; + OPL_Y8950[i]->deltat->status_reset_handler = Y8950_deltat_status_reset; + OPL_Y8950[i]->deltat->status_change_which_chip = i; + OPL_Y8950[i]->deltat->status_change_EOS_bit = 0x10; /* status flag: set bit4 on End Of Sample */ + OPL_Y8950[i]->deltat->status_change_BRDY_bit = 0x08; /* status flag: set bit3 on BRDY (End Of: ADPCM analysis/synthesis, memory reading/writing) */ + + /*OPL_Y8950[i]->deltat->write_time = 10.0 / clock;*/ /* a single byte write takes 10 cycles of main clock */ + /*OPL_Y8950[i]->deltat->read_time = 8.0 / clock;*/ /* a single byte read takes 8 cycles of main clock */ + /* reset */ + Y8950ResetChip(i); + } + + return 0; +} + +void Y8950Shutdown(void) +{ + int i; + + for (i = 0;i < Y8950NumChips; i++) + { + /* emulator shutdown */ + OPLDestroy(OPL_Y8950[i]); + OPL_Y8950[i] = NULL; + } + Y8950NumChips = 0; +} +void Y8950ResetChip(int which) +{ + OPLResetChip(OPL_Y8950[which]); +} + +int Y8950Write(int which, int a, int v) +{ + return OPLWrite(OPL_Y8950[which], a, v); +} + +unsigned char Y8950Read(int which, int a) +{ + return OPLRead(OPL_Y8950[which], a); +} +int Y8950TimerOver(int which, int c) +{ + return OPLTimerOver(OPL_Y8950[which], c); +} + +void Y8950SetTimerHandler(int which, OPL_TIMERHANDLER TimerHandler, int channelOffset) +{ + OPLSetTimerHandler(OPL_Y8950[which], TimerHandler, channelOffset); +} +void Y8950SetIRQHandler(int which,OPL_IRQHANDLER IRQHandler,int param) +{ + OPLSetIRQHandler(OPL_Y8950[which], IRQHandler, param); +} +void Y8950SetUpdateHandler(int which,OPL_UPDATEHANDLER UpdateHandler,int param) +{ + OPLSetUpdateHandler(OPL_Y8950[which], UpdateHandler, param); +} + +void Y8950SetDeltaTMemory(int which, void * deltat_mem_ptr, int deltat_mem_size ) +{ + FM_OPL *OPL = OPL_Y8950[which]; + OPL->deltat->memory = (UINT8 *)(deltat_mem_ptr); + OPL->deltat->memory_size = deltat_mem_size; +} + +/* +** Generate samples for one of the Y8950's +** +** 'which' is the virtual Y8950 number +** '*buffer' is the output buffer pointer +** 'length' is the number of samples that should be generated +*/ +void Y8950UpdateOne(int which, INT16 *buffer, int length) +{ + int i; + FM_OPL *OPL = OPL_Y8950[which]; + UINT8 rhythm = OPL->rhythm&0x20; + YM_DELTAT *DELTAT = OPL->deltat; + OPLSAMPLE *buf = buffer; + + if( (void *)OPL != cur_chip ){ + cur_chip = (void *)OPL; + /* rhythm slots */ + SLOT7_1 = &OPL->P_CH[7].SLOT[SLOT1]; + SLOT7_2 = &OPL->P_CH[7].SLOT[SLOT2]; + SLOT8_1 = &OPL->P_CH[8].SLOT[SLOT1]; + SLOT8_2 = &OPL->P_CH[8].SLOT[SLOT2]; + + } + for( i=0; i < length ; i++ ) + { + int lt; + + output[0] = 0; + output_deltat[0] = 0; + + advance_lfo(OPL); + + /* deltaT ADPCM */ + if( DELTAT->portstate&0x80 ) + YM_DELTAT_ADPCM_CALC(DELTAT); + + /* FM part */ + OPL_CALC_CH(&OPL->P_CH[0]); + OPL_CALC_CH(&OPL->P_CH[1]); + OPL_CALC_CH(&OPL->P_CH[2]); + OPL_CALC_CH(&OPL->P_CH[3]); + OPL_CALC_CH(&OPL->P_CH[4]); + OPL_CALC_CH(&OPL->P_CH[5]); + + if(!rhythm) + { + OPL_CALC_CH(&OPL->P_CH[6]); + OPL_CALC_CH(&OPL->P_CH[7]); + OPL_CALC_CH(&OPL->P_CH[8]); + } + else /* Rhythm part */ + { + OPL_CALC_RH(&OPL->P_CH[0], (OPL->noise_rng>>0)&1 ); + } + + lt = output[0] + (output_deltat[0]>>11); + + lt >>= FINAL_SH; + + /* limit check */ + lt = limit( lt , MAXOUT, MINOUT ); + + #ifdef SAVE_SAMPLE + if (which==0) + { + SAVE_ALL_CHANNELS + } + #endif + + /* store to sound buffer */ + buf[i] = lt; + + advance(OPL); + } + +} + +void Y8950SetPortHandler(int which,OPL_PORTHANDLER_W PortHandler_w,OPL_PORTHANDLER_R PortHandler_r,int param) +{ + FM_OPL *OPL = OPL_Y8950[which]; + OPL->porthandler_w = PortHandler_w; + OPL->porthandler_r = PortHandler_r; + OPL->port_param = param; +} + +void Y8950SetKeyboardHandler(int which,OPL_PORTHANDLER_W KeyboardHandler_w,OPL_PORTHANDLER_R KeyboardHandler_r,int param) +{ + FM_OPL *OPL = OPL_Y8950[which]; + OPL->keyboardhandler_w = KeyboardHandler_w; + OPL->keyboardhandler_r = KeyboardHandler_r; + OPL->keyboard_param = param; +} + +#endif + diff -u -ru adplug-1.5.1/src/fmopl.h adplug-1.5.1-nonfree/src/fmopl.h --- adplug-1.5.1/src/fmopl.h 2003-11-03 16:41:33.000000000 +0100 +++ adplug-1.5.1-nonfree/src/fmopl.h 2005-09-16 16:49:07.000000000 +0200 @@ -1,14 +1,15 @@ #ifndef __FMOPL_H_ #define __FMOPL_H_ +#define HAS_YM3812 1 + /* --- select emulation chips --- */ #define BUILD_YM3812 (HAS_YM3812) -//#define BUILD_YM3526 (HAS_YM3526) -//#define BUILD_Y8950 (HAS_Y8950) +#define BUILD_YM3526 (HAS_YM3526) +#define BUILD_Y8950 (HAS_Y8950) -/* --- system optimize --- */ -/* select bit size of output : 8 or 16 */ -#define OPL_OUTPUT_BIT 16 +/* select output bits size of output : 8 or 16 */ +#define OPL_SAMPLE_BITS 16 /* compiler dependence */ #ifndef OSD_CPU_H @@ -21,154 +22,90 @@ typedef signed int INT32; /* signed 32bit */ #endif -#if (OPL_OUTPUT_BIT==16) +#if (OPL_SAMPLE_BITS==16) typedef INT16 OPLSAMPLE; #endif -#if (OPL_OUTPUT_BIT==8) -typedef unsigned char OPLSAMPLE; +#if (OPL_SAMPLE_BITS==8) +typedef INT8 OPLSAMPLE; #endif -#if BUILD_Y8950 -#include "ymdeltat.h" -#endif - typedef void (*OPL_TIMERHANDLER)(int channel,double interval_Sec); typedef void (*OPL_IRQHANDLER)(int param,int irq); typedef void (*OPL_UPDATEHANDLER)(int param,int min_interval_us); typedef void (*OPL_PORTHANDLER_W)(int param,unsigned char data); typedef unsigned char (*OPL_PORTHANDLER_R)(int param); -/* !!!!! here is private section , do not access there member direct !!!!! */ -#define OPL_TYPE_WAVESEL 0x01 /* waveform select */ -#define OPL_TYPE_ADPCM 0x02 /* DELTA-T ADPCM unit */ -#define OPL_TYPE_KEYBOARD 0x04 /* keyboard interface */ -#define OPL_TYPE_IO 0x08 /* I/O port */ - -/* Saving is necessary for member of the 'R' mark for suspend/resume */ -/* ---------- OPL one of slot ---------- */ -typedef struct fm_opl_slot { - INT32 TL; /* total level :TL << 8 */ - INT32 TLL; /* adjusted now TL */ - UINT8 KSR; /* key scale rate :(shift down bit) */ - INT32 *AR; /* attack rate :&AR_TABLE[AR<<2] */ - INT32 *DR; /* decay rate :&DR_TALBE[DR<<2] */ - INT32 SL; /* sustin level :SL_TALBE[SL] */ - INT32 *RR; /* release rate :&DR_TABLE[RR<<2] */ - UINT8 ksl; /* keyscale level :(shift down bits) */ - UINT8 ksr; /* key scale rate :kcode>>KSR */ - UINT32 mul; /* multiple :ML_TABLE[ML] */ - UINT32 Cnt; /* frequency count : */ - UINT32 Incr; /* frequency step : */ - /* envelope generator state */ - UINT8 eg_typ; /* envelope type flag */ - UINT8 evm; /* envelope phase */ - INT32 evc; /* envelope counter */ - INT32 eve; /* envelope counter end point */ - INT32 evs; /* envelope counter step */ - INT32 evsa; /* envelope step for AR :AR[ksr] */ - INT32 evsd; /* envelope step for DR :DR[ksr] */ - INT32 evsr; /* envelope step for RR :RR[ksr] */ - /* LFO */ - UINT8 ams; /* ams flag */ - UINT8 vib; /* vibrate flag */ - /* wave selector */ - INT32 **wavetable; -}OPL_SLOT; - -/* ---------- OPL one of channel ---------- */ -typedef struct fm_opl_channel { - OPL_SLOT SLOT[2]; - UINT8 CON; /* connection type */ - UINT8 FB; /* feed back :(shift down bit) */ - INT32 *connect1; /* slot1 output pointer */ - INT32 *connect2; /* slot2 output pointer */ - INT32 op1_out[2]; /* slot1 output for selfeedback */ - /* phase generator state */ - UINT32 block_fnum; /* block+fnum : */ - UINT8 kcode; /* key code : KeyScaleCode */ - UINT32 fc; /* Freq. Increment base */ - UINT32 ksl_base; /* KeyScaleLevel Base step */ - UINT8 keyon; /* key on/off flag */ -} OPL_CH; - -/* OPL state */ -typedef struct fm_opl_f { - UINT8 type; /* chip type */ - int clock; /* master clock (Hz) */ - int rate; /* sampling rate (Hz) */ - double freqbase; /* frequency base */ - double TimerBase; /* Timer base time (==sampling time) */ - UINT8 address; /* address register */ - UINT8 status; /* status flag */ - UINT8 statusmask; /* status mask */ - UINT32 mode; /* Reg.08 : CSM , notesel,etc. */ - /* Timer */ - int T[2]; /* timer counter */ - UINT8 st[2]; /* timer enable */ - /* FM channel slots */ - OPL_CH *P_CH; /* pointer of CH */ - int max_ch; /* maximum channel */ - /* Rythm sention */ - UINT8 rythm; /* Rythm mode , key flag */ -#if BUILD_Y8950 - /* Delta-T ADPCM unit (Y8950) */ - YM_DELTAT *deltat; /* DELTA-T ADPCM */ +#if BUILD_YM3812 + +int YM3812Init(int num, int clock, int rate); +void YM3812Shutdown(void); +void YM3812ResetChip(int which); +int YM3812Write(int which, int a, int v); +unsigned char YM3812Read(int which, int a); +int YM3812TimerOver(int which, int c); +void YM3812UpdateOne(int which, INT16 *buffer, int length); + +void YM3812SetTimerHandler(int which, OPL_TIMERHANDLER TimerHandler, int channelOffset); +void YM3812SetIRQHandler(int which, OPL_IRQHANDLER IRQHandler, int param); +void YM3812SetUpdateHandler(int which, OPL_UPDATEHANDLER UpdateHandler, int param); + #endif - /* Keyboard / I/O interface unit (Y8950) */ - UINT8 portDirection; - UINT8 portLatch; - OPL_PORTHANDLER_R porthandler_r; - OPL_PORTHANDLER_W porthandler_w; - int port_param; - OPL_PORTHANDLER_R keyboardhandler_r; - OPL_PORTHANDLER_W keyboardhandler_w; - int keyboard_param; - /* time tables */ - INT32 AR_TABLE[75]; /* atttack rate tables */ - INT32 DR_TABLE[75]; /* decay rate tables */ - UINT32 FN_TABLE[1024]; /* fnumber -> increment counter */ - /* LFO */ - INT32 *ams_table; - INT32 *vib_table; - INT32 amsCnt; - INT32 amsIncr; - INT32 vibCnt; - INT32 vibIncr; - /* wave selector enable flag */ - UINT8 wavesel; - /* external event callback handler */ - OPL_TIMERHANDLER TimerHandler; /* TIMER handler */ - int TimerParam; /* TIMER parameter */ - OPL_IRQHANDLER IRQHandler; /* IRQ handler */ - int IRQParam; /* IRQ parameter */ - OPL_UPDATEHANDLER UpdateHandler; /* stream update handler */ - int UpdateParam; /* stream update parameter */ -} FM_OPL; - -/* ---------- Generic interface section ---------- */ -#define OPL_TYPE_YM3526 (0) -#define OPL_TYPE_YM3812 (OPL_TYPE_WAVESEL) -#define OPL_TYPE_Y8950 (OPL_TYPE_ADPCM|OPL_TYPE_KEYBOARD|OPL_TYPE_IO) - -FM_OPL *OPLCreate(int type, int clock, int rate); -void OPLDestroy(FM_OPL *OPL); -void OPLSetTimerHandler(FM_OPL *OPL,OPL_TIMERHANDLER TimerHandler,int channelOffset); -void OPLSetIRQHandler(FM_OPL *OPL,OPL_IRQHANDLER IRQHandler,int param); -void OPLSetUpdateHandler(FM_OPL *OPL,OPL_UPDATEHANDLER UpdateHandler,int param); -/* Y8950 port handlers */ -void OPLSetPortHandler(FM_OPL *OPL,OPL_PORTHANDLER_W PortHandler_w,OPL_PORTHANDLER_R PortHandler_r,int param); -void OPLSetKeyboardHandler(FM_OPL *OPL,OPL_PORTHANDLER_W KeyboardHandler_w,OPL_PORTHANDLER_R KeyboardHandler_r,int param); -void OPLResetChip(FM_OPL *OPL); -int OPLWrite(FM_OPL *OPL,int a,int v); -unsigned char OPLRead(FM_OPL *OPL,int a); -int OPLTimerOver(FM_OPL *OPL,int c); -/* YM3626/YM3812 local section */ -void YM3812UpdateOne(FM_OPL *OPL, INT16 *buffer, int length); +#if BUILD_YM3526 + +/* +** Initialize YM3526 emulator(s). +** +** 'num' is the number of virtual YM3526's to allocate +** 'clock' is the chip clock in Hz +** 'rate' is sampling rate +*/ +int YM3526Init(int num, int clock, int rate); +/* shutdown the YM3526 emulators*/ +void YM3526Shutdown(void); +void YM3526ResetChip(int which); +int YM3526Write(int which, int a, int v); +unsigned char YM3526Read(int which, int a); +int YM3526TimerOver(int which, int c); +/* +** Generate samples for one of the YM3526's +** +** 'which' is the virtual YM3526 number +** '*buffer' is the output buffer pointer +** 'length' is the number of samples that should be generated +*/ +void YM3526UpdateOne(int which, INT16 *buffer, int length); + +void YM3526SetTimerHandler(int which, OPL_TIMERHANDLER TimerHandler, int channelOffset); +void YM3526SetIRQHandler(int which, OPL_IRQHANDLER IRQHandler, int param); +void YM3526SetUpdateHandler(int which, OPL_UPDATEHANDLER UpdateHandler, int param); + +#endif + -void Y8950UpdateOne(FM_OPL *OPL, INT16 *buffer, int length); +#if BUILD_Y8950 + +/* Y8950 port handlers */ +void Y8950SetPortHandler(int which, OPL_PORTHANDLER_W PortHandler_w, OPL_PORTHANDLER_R PortHandler_r, int param); +void Y8950SetKeyboardHandler(int which, OPL_PORTHANDLER_W KeyboardHandler_w, OPL_PORTHANDLER_R KeyboardHandler_r, int param); +void Y8950SetDeltaTMemory(int which, void * deltat_mem_ptr, int deltat_mem_size ); + +int Y8950Init (int num, int clock, int rate); +void Y8950Shutdown (void); +void Y8950ResetChip (int which); +int Y8950Write (int which, int a, int v); +unsigned char Y8950Read (int which, int a); +int Y8950TimerOver (int which, int c); +void Y8950UpdateOne (int which, INT16 *buffer, int length); + +void Y8950SetTimerHandler (int which, OPL_TIMERHANDLER TimerHandler, int channelOffset); +void Y8950SetIRQHandler (int which, OPL_IRQHANDLER IRQHandler, int param); +void Y8950SetUpdateHandler (int which, OPL_UPDATEHANDLER UpdateHandler, int param); #endif + + +#endif /* __FMOPL_H_ */