Updated to version 0.60 of fmopl by Jarek Burczynski
Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@569
This commit is contained in:
Sjoerd van der Berg
parent
8ae271bf19
commit
b3edd4eb90
3 changed files with 1112 additions and 626 deletions
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@ -6,8 +6,7 @@
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#define BUILD_YM3526 (HAS_YM3526)
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#define BUILD_Y8950 (HAS_Y8950)
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/* --- system optimize --- */
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/* select bit size of output : 8 or 16 */
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/* select output bits size of output : 8 or 16 */
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#define OPL_SAMPLE_BITS 16
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/* compiler dependence */
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@ -25,167 +24,88 @@ typedef signed int INT32; /* signed 32bit */
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typedef INT16 OPLSAMPLE;
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#endif
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#if (OPL_SAMPLE_BITS==8)
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typedef unsigned char OPLSAMPLE;
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typedef INT8 OPLSAMPLE;
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#endif
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#if BUILD_Y8950
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#include "ymdeltat.h"
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#endif
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typedef void (*OPL_TIMERHANDLER)(int channel,double interval_Sec);
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typedef void (*OPL_IRQHANDLER)(int param,int irq);
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typedef void (*OPL_UPDATEHANDLER)(int param,int min_interval_us);
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typedef void (*OPL_PORTHANDLER_W)(int param,unsigned char data);
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typedef unsigned char (*OPL_PORTHANDLER_R)(int param);
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/* !!!!! here is private section , do not access there member direct !!!!! */
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#define OPL_TYPE_WAVESEL 0x01 /* waveform select */
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#define OPL_TYPE_ADPCM 0x02 /* DELTA-T ADPCM unit */
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#define OPL_TYPE_KEYBOARD 0x04 /* keyboard interface */
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#define OPL_TYPE_IO 0x08 /* I/O port */
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#if BUILD_YM3812
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/* Saving is necessary for member of the 'R' mark for suspend/resume */
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/* ---------- OPL slot ---------- */
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typedef struct fm_opl_slot {
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const UINT32 *AR; /* attack rate tab :&eg_table[AR<<2]*/
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const UINT32 *DR; /* decay rate tab :&eg_table[DR<<2]*/
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const UINT32 *RR; /* release rate tab:&eg_table[RR<<2]*/
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UINT8 KSR; /* key scale rate */
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UINT8 ARval; /* current AR */
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UINT8 ksl; /* keyscale level */
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UINT8 ksr; /* key scale rate :kcode>>KSR */
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UINT8 mul; /* multiple :ML_TABLE[ML] */
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int YM3812Init(int num, int clock, int rate);
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void YM3812Shutdown(void);
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void YM3812ResetChip(int which);
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int YM3812Write(int which, int a, int v);
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unsigned char YM3812Read(int which, int a);
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int YM3812TimerOver(int which, int c);
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void YM3812UpdateOne(int which, INT16 *buffer, int length);
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/* Phase Generator */
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UINT32 Cnt; /* frequency count */
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UINT32 Incr; /* frequency step */
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void YM3812SetTimerHandler(int which, OPL_TIMERHANDLER TimerHandler, int channelOffset);
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void YM3812SetIRQHandler(int which, OPL_IRQHANDLER IRQHandler, int param);
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void YM3812SetUpdateHandler(int which, OPL_UPDATEHANDLER UpdateHandler, int param);
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/* Envelope Generator */
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UINT8 eg_type; /* percussive/non-percussive mode */
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UINT8 state; /* phase type */
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UINT32 TL; /* total level :TL << 3 */
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INT32 TLL; /* adjusted now TL */
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INT32 volume; /* envelope counter */
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UINT32 sl; /* sustain level :SL_TABLE[SL] */
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UINT32 delta_ar; /* envelope step for Attack */
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UINT32 delta_dr; /* envelope step for Decay */
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UINT32 delta_rr; /* envelope step for Release */
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#endif
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UINT32 key; /* 0 = KEY OFF, >0 = KEY ON */
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/* LFO */
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UINT32 AMmask; /* LFO Amplitude Modulation enable mask */
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UINT8 vib; /* LFO Phase Modulation enable flag (active high)*/
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#if BUILD_YM3526
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/* waveform select */
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unsigned int *wavetable;
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}OPL_SLOT;
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/*
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** Initialize YM3526 emulator(s).
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**
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** 'num' is the number of virtual YM3526's to allocate
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** 'clock' is the chip clock in Hz
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** 'rate' is sampling rate
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*/
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int YM3526Init(int num, int clock, int rate);
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/* shutdown the YM3526 emulators*/
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void YM3526Shutdown(void);
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void YM3526ResetChip(int which);
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int YM3526Write(int which, int a, int v);
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unsigned char YM3526Read(int which, int a);
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int YM3526TimerOver(int which, int c);
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/*
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** Generate samples for one of the YM3526's
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**
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** 'which' is the virtual YM3526 number
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** '*buffer' is the output buffer pointer
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** 'length' is the number of samples that should be generated
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*/
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void YM3526UpdateOne(int which, INT16 *buffer, int length);
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/* ---------- OPL one of channel ---------- */
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typedef struct fm_opl_channel {
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OPL_SLOT SLOT[2];
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UINT8 FB; /* feedback shift value */
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INT32 *connect1; /* slot1 output pointer */
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INT32 op1_out[2]; /* slot1 output for feedback */
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void YM3526SetTimerHandler(int which, OPL_TIMERHANDLER TimerHandler, int channelOffset);
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void YM3526SetIRQHandler(int which, OPL_IRQHANDLER IRQHandler, int param);
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void YM3526SetUpdateHandler(int which, OPL_UPDATEHANDLER UpdateHandler, int param);
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/* phase generator state */
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UINT32 block_fnum; /* block+fnum */
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UINT32 fc; /* Freq. Increment base */
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UINT32 ksl_base; /* KeyScaleLevel Base step */
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UINT8 kcode; /* key code (for key scaling) */
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#endif
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UINT8 CON; /* connection (algorithm) type */
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} OPL_CH;
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/* OPL state */
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typedef struct fm_opl_f {
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/* FM channel slots */
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OPL_CH P_CH[9]; /* OPL/OPL2 chips have 9 channels */
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UINT8 rhythm; /* Rhythm mode */
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UINT32 eg_tab[16+64+16]; /* EG rate table: 16 (dummy) + 64 rates + 16 RKS */
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UINT32 fn_tab[1024]; /* fnumber -> increment counter */
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/* LFO */
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UINT8 lfo_am_depth;
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UINT8 lfo_pm_depth_range;
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UINT32 lfo_am_cnt;
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UINT32 lfo_am_inc;
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UINT32 lfo_pm_cnt;
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UINT32 lfo_pm_inc;
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UINT32 noise_rng; /* 23 bit noise shift register */
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UINT32 noise_p; /* current noise 'phase' */
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UINT32 noise_f; /* current noise period */
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UINT8 wavesel; /* waveform select enable flag */
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int T[2]; /* timer counters */
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UINT8 st[2]; /* timer enable */
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#if BUILD_Y8950
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/* Delta-T ADPCM unit (Y8950) */
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YM_DELTAT *deltat;
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#include "ymdeltat.h"
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/* Keyboard / I/O interface unit*/
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UINT8 portDirection;
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UINT8 portLatch;
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OPL_PORTHANDLER_R porthandler_r;
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OPL_PORTHANDLER_W porthandler_w;
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int port_param;
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OPL_PORTHANDLER_R keyboardhandler_r;
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OPL_PORTHANDLER_W keyboardhandler_w;
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int keyboard_param;
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#endif
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/* external event callback handlers */
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OPL_TIMERHANDLER TimerHandler; /* TIMER handler */
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int TimerParam; /* TIMER parameter */
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OPL_IRQHANDLER IRQHandler; /* IRQ handler */
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int IRQParam; /* IRQ parameter */
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OPL_UPDATEHANDLER UpdateHandler; /* stream update handler */
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int UpdateParam; /* stream update parameter */
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UINT8 type; /* chip type */
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UINT8 address; /* address register */
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UINT8 status; /* status flag */
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UINT8 statusmask; /* status mask */
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UINT8 mode; /* Reg.08 : CSM,notesel,etc. */
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int clock; /* master clock (Hz) */
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int rate; /* sampling rate (Hz) */
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double freqbase; /* frequency base */
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double TimerBase; /* Timer base time (==sampling time)*/
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} FM_OPL;
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/* ---------- Generic interface section ---------- */
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#define OPL_TYPE_YM3526 (0)
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#define OPL_TYPE_YM3812 (OPL_TYPE_WAVESEL)
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#define OPL_TYPE_Y8950 (OPL_TYPE_ADPCM|OPL_TYPE_KEYBOARD|OPL_TYPE_IO)
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FM_OPL *OPLCreate(int type, int clock, int rate);
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void OPLDestroy(FM_OPL *OPL);
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void OPLSetTimerHandler(FM_OPL *OPL,OPL_TIMERHANDLER TimerHandler,int channelOffset);
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void OPLSetIRQHandler(FM_OPL *OPL,OPL_IRQHANDLER IRQHandler,int param);
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void OPLSetUpdateHandler(FM_OPL *OPL,OPL_UPDATEHANDLER UpdateHandler,int param);
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/* Y8950 port handlers */
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void OPLSetPortHandler(FM_OPL *OPL,OPL_PORTHANDLER_W PortHandler_w,OPL_PORTHANDLER_R PortHandler_r,int param);
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void OPLSetKeyboardHandler(FM_OPL *OPL,OPL_PORTHANDLER_W KeyboardHandler_w,OPL_PORTHANDLER_R KeyboardHandler_r,int param);
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void Y8950SetPortHandler(int which, OPL_PORTHANDLER_W PortHandler_w, OPL_PORTHANDLER_R PortHandler_r, int param);
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void Y8950SetKeyboardHandler(int which, OPL_PORTHANDLER_W KeyboardHandler_w, OPL_PORTHANDLER_R KeyboardHandler_r, int param);
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void Y8950SetDeltaTMemory(int which, void * deltat_rom, int deltat_rom_size );
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void OPLResetChip(FM_OPL *OPL);
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int OPLWrite(FM_OPL *OPL,int a,int v);
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unsigned char OPLRead(FM_OPL *OPL,int a);
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int OPLTimerOver(FM_OPL *OPL,int c);
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int Y8950Init (int num, int clock, int rate);
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void Y8950Shutdown (void);
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void Y8950ResetChip (int which);
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int Y8950Write (int which, int a, int v);
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unsigned char Y8950Read (int which, int a);
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int Y8950TimerOver (int which, int c);
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void Y8950UpdateOne (int which, INT16 *buffer, int length);
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void Y8950SetTimerHandler (int which, OPL_TIMERHANDLER TimerHandler, int channelOffset);
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void Y8950SetIRQHandler (int which, OPL_IRQHANDLER IRQHandler, int param);
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void Y8950SetUpdateHandler (int which, OPL_UPDATEHANDLER UpdateHandler, int param);
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#endif
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/* YM3626/YM3812 local section */
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void YM3812UpdateOne(FM_OPL *OPL, INT16 *buffer, int length);
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void Y8950UpdateOne(FM_OPL *OPL, INT16 *buffer, int length);
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#endif
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