[picodrive.git] / pico / sound / ym2612.h

/*\r
  header file for software emulation for FM sound generator\r
\r
*/\r
#ifndef _H_FM_FM_\r
#define _H_FM_FM_\r
\r
/* compiler dependence */\r
#ifndef UINT8\r
typedef unsigned char	UINT8;   /* unsigned  8bit */\r
typedef unsigned short	UINT16;  /* unsigned 16bit */\r
typedef unsigned int	UINT32;  /* unsigned 32bit */\r
#endif\r
#ifndef INT8\r
typedef signed char		INT8;    /* signed  8bit   */\r
typedef signed short	INT16;   /* signed 16bit   */\r
typedef signed int		INT32;   /* signed 32bit   */\r
#endif\r
\r
#if 1\r
/* struct describing a single operator (SLOT) */\r
typedef struct\r
{\r
	INT32	*DT;		/* #0x00 detune          :dt_tab[DT] */\r
	UINT8	ar;		/* #0x04 attack rate  */\r
	UINT8	d1r;		/* #0x05 decay rate   */\r
	UINT8	d2r;		/* #0x06 sustain rate */\r
	UINT8	rr;		/* #0x07 release rate */\r
	UINT32	mul;		/* #0x08 multiple        :ML_TABLE[ML] */\r
\r
	/* Phase Generator */\r
	UINT32	phase;		/* #0x0c phase counter | need_save */\r
	UINT32	Incr;		/* #0x10 phase step */\r
\r
	UINT8	KSR;		/* #0x14 key scale rate  :3-KSR */\r
	UINT8	ksr;		/* #0x15 key scale rate  :kcode>>(3-KSR) */\r
\r
	UINT8	key;		/* #0x16 0=last key was KEY OFF, 1=KEY ON */\r
\r
	/* Envelope Generator */\r
	UINT8	state;		/* #0x17 phase type: EG_OFF=0, EG_REL, EG_SUS, EG_DEC, EG_ATT | need_save */\r
	UINT16	tl;		/* #0x18 total level: TL << 3 */\r
	INT16	volume;		/* #0x1a envelope counter | need_save */\r
	UINT32	sl;		/* #0x1c sustain level:sl_table[SL] */\r
\r
	UINT32	eg_pack_ar; 	/* #0x20 (attack state) */\r
	UINT32	eg_pack_d1r;	/* #0x24 (decay state) */\r
	UINT32	eg_pack_d2r;	/* #0x28 (sustain state) */\r
	UINT32	eg_pack_rr; 	/* #0x2c (release state) */\r
} FM_SLOT;\r
\r
\r
typedef struct\r
{\r
	FM_SLOT	SLOT[4];	/* four SLOTs (operators) */\r
\r
	UINT8	ALGO;		/* +00 algorithm */\r
	UINT8	FB;		/* feedback shift */\r
	UINT8	pad[2];\r
	INT32	op1_out;	/* op1 output for feedback */\r
\r
	INT32	mem_value;	/* +08 delayed sample (MEM) value */\r
\r
	INT32	pms;		/* channel PMS */\r
	UINT8	ams;		/* channel AMS */\r
\r
	UINT8	kcode;		/* +11 key code:                        */\r
	UINT8   fn_h;		/* freq latch           */\r
	UINT8	pad2;\r
	UINT32	fc;		/* fnum,blk:adjusted to sample rate */\r
	UINT32	block_fnum;	/* current blk/fnum value for this slot (can be different betweeen slots of one channel in 3slot mode) */\r
\r
	/* LFO */\r
	UINT8	AMmasks;	/* AM enable flag */\r
	UINT8	pad3[3];\r
} FM_CH;\r
\r
typedef struct\r
{\r
	int		clock;		/* master clock  (Hz)   */\r
	int		rate;		/* sampling rate (Hz)   */\r
	double	freqbase;	/* 08 frequency base       */\r
	UINT8	address;	/* 10 address register | need_save     */\r
	UINT8	status;		/* 11 status flag | need_save          */\r
	UINT8	mode;		/* mode  CSM / 3SLOT    */\r
	UINT8	pad;\r
	int		TA;			/* timer a              */\r
	int		TAC;		/* timer a maxval       */\r
	int		TAT;		/* timer a ticker | need_save */\r
	UINT8	TB;			/* timer b              */\r
	UINT8	pad2[3];\r
	int		TBC;		/* timer b maxval       */\r
	int		TBT;		/* timer b ticker | need_save */\r
	/* local time tables */\r
	INT32	dt_tab[8][32];/* DeTune table       */\r
} FM_ST;\r
\r
/***********************************************************/\r
/* OPN unit                                                */\r
/***********************************************************/\r
\r
/* OPN 3slot struct */\r
typedef struct\r
{\r
	UINT32  fc[3];			/* fnum3,blk3: calculated */\r
	UINT8	fn_h;			/* freq3 latch */\r
	UINT8	kcode[3];		/* key code */\r
	UINT32	block_fnum[3];	/* current fnum value for this slot (can be different betweeen slots of one channel in 3slot mode) */\r
} FM_3SLOT;\r
\r
/* OPN/A/B common state */\r
typedef struct\r
{\r
	FM_ST	ST;				/* general state */\r
	FM_3SLOT SL3;			/* 3 slot mode state */\r
	UINT32  pan;			/* fm channels output mask (bit 1 = enable) */\r
\r
	UINT32	eg_cnt;			/* global envelope generator counter | need_save */\r
	UINT32	eg_timer;		/* global envelope generator counter works at frequency = chipclock/64/3 | need_save */\r
	UINT32	eg_timer_add;		/* step of eg_timer */\r
\r
	/* LFO */\r
	UINT32	lfo_cnt;		/* need_save */\r
	UINT32	lfo_inc;\r
\r
	UINT32	lfo_freq[8];	/* LFO FREQ table */\r
} FM_OPN;\r
\r
/* here's the virtual YM2612 */\r
typedef struct\r
{\r
	UINT8		REGS[0x200];			/* registers (for save states)       */\r
	INT32		addr_A1;			/* address line A1 | need_save       */\r
\r
	FM_CH		CH[6];				/* channel state */\r
\r
	/* dac output (YM2612) */\r
	int		dacen;\r
	INT32		dacout;\r
\r
	FM_OPN		OPN;				/* OPN state            */\r
\r
	UINT32		slot_mask;			/* active slot mask (performance hack) */\r
} YM2612;\r
#endif\r
\r
#ifndef EXTERNAL_YM2612\r
extern YM2612 ym2612;\r
#endif\r
\r
void YM2612Init_(int baseclock, int rate);\r
void YM2612ResetChip_(void);\r
int  YM2612UpdateOne_(int *buffer, int length, int stereo, int is_buf_empty);\r
\r
int  YM2612Write_(unsigned int a, unsigned int v);\r
//unsigned char YM2612Read_(void);\r
\r
int  YM2612PicoTick_(int n);\r
void YM2612PicoStateLoad_(void);\r
\r
void *YM2612GetRegs(void);\r
void YM2612PicoStateSave2(int tat, int tbt);\r
int  YM2612PicoStateLoad2(int *tat, int *tbt);\r
\r
#ifndef __GP2X__\r
#define YM2612Init          YM2612Init_\r
#define YM2612ResetChip     YM2612ResetChip_\r
#define YM2612UpdateOne     YM2612UpdateOne_\r
#define YM2612PicoStateLoad YM2612PicoStateLoad_\r
#else\r
/* GP2X specific */\r
#include "../../platform/gp2x/940ctl.h"\r
extern int PicoOpt;\r
#define YM2612Init(baseclock,rate) { \\r
	if (PicoOpt&0x200) YM2612Init_940(baseclock, rate); \\r
	else               YM2612Init_(baseclock, rate); \\r
}\r
#define YM2612ResetChip() { \\r
	if (PicoOpt&0x200) YM2612ResetChip_940(); \\r
	else               YM2612ResetChip_(); \\r
}\r
#define YM2612UpdateOne(buffer,length,stereo,is_buf_empty) \\r
	(PicoOpt&0x200) ? YM2612UpdateOne_940(buffer, length, stereo, is_buf_empty) : \\r
				YM2612UpdateOne_(buffer, length, stereo, is_buf_empty);\r
#define YM2612PicoStateLoad() { \\r
	if (PicoOpt&0x200) YM2612PicoStateLoad_940(); \\r
	else               YM2612PicoStateLoad_(); \\r
}\r
#endif /* __GP2X__ */\r
\r
\r
#endif /* _H_FM_FM_ */\r
Commit	Line	Data
cc68a136	1	/*\r
	2	header file for software emulation for FM sound generator\r
	3	\r
	4	*/\r
	5	#ifndef _H_FM_FM_\r
	6	#define _H_FM_FM_\r
	7	\r
	8	/* compiler dependence */\r
	9	#ifndef UINT8\r
	10	typedef unsigned char UINT8; /* unsigned 8bit */\r
	11	typedef unsigned short UINT16; /* unsigned 16bit */\r
	12	typedef unsigned int UINT32; /* unsigned 32bit */\r
	13	#endif\r
	14	#ifndef INT8\r
	15	typedef signed char INT8; /* signed 8bit */\r
	16	typedef signed short INT16; /* signed 16bit */\r
	17	typedef signed int INT32; /* signed 32bit */\r
	18	#endif\r
	19	\r
	20	#if 1\r
	21	/* struct describing a single operator (SLOT) */\r
	22	typedef struct\r
	23	{\r
	24	INT32 DT; / #0x00 detune :dt_tab[DT] */\r
d2721b08	25	UINT8 ar; /* #0x04 attack rate */\r
cc68a136	26	UINT8 d1r; /* #0x05 decay rate */\r
cc68a136	27	UINT8 d2r; /* #0x06 sustain rate */\r
d2721b08	28	UINT8 rr; /* #0x07 release rate */\r
cc68a136	29	UINT32 mul; /* #0x08 multiple :ML_TABLE[ML] */\r
	30	\r
	31	/* Phase Generator */\r
d2721b08	32	UINT32 phase; /* #0x0c phase counter \| need_save */\r
db49317b	33	UINT32 Incr; /* #0x10 phase step */\r
cc68a136	34	\r
	35	UINT8 KSR; /* #0x14 key scale rate :3-KSR */\r
	36	UINT8 ksr; /* #0x15 key scale rate :kcode>>(3-KSR) */\r
	37	\r
	38	UINT8 key; /* #0x16 0=last key was KEY OFF, 1=KEY ON */\r
	39	\r
	40	/* Envelope Generator */\r
d2721b08	41	UINT8 state; /* #0x17 phase type: EG_OFF=0, EG_REL, EG_SUS, EG_DEC, EG_ATT \| need_save */\r
	42	UINT16 tl; /* #0x18 total level: TL << 3 */\r
	43	INT16 volume; /* #0x1a envelope counter \| need_save */\r
	44	UINT32 sl; /* #0x1c sustain level:sl_table[SL] */\r
cc68a136	45	\r
d2721b08	46	UINT32 eg_pack_ar; /* #0x20 (attack state) */\r
cc68a136	47	UINT32 eg_pack_d1r; /* #0x24 (decay state) */\r
cc68a136	48	UINT32 eg_pack_d2r; /* #0x28 (sustain state) */\r
d2721b08	49	UINT32 eg_pack_rr; /* #0x2c (release state) */\r
cc68a136	50	} FM_SLOT;\r
	51	\r
	52	\r
	53	typedef struct\r
	54	{\r
	55	FM_SLOT SLOT[4]; /* four SLOTs (operators) */\r
	56	\r
db49317b	57	UINT8 ALGO; /* +00 algorithm */\r
d2721b08	58	UINT8 FB; /* feedback shift */\r
eaa9417a	59	UINT8 pad[2];\r
cc68a136	60	INT32 op1_out; /* op1 output for feedback */\r
cc68a136	61	\r
db49317b	62	INT32 mem_value; /* +08 delayed sample (MEM) value */\r
cc68a136	63	\r
	64	INT32 pms; /* channel PMS */\r
	65	UINT8 ams; /* channel AMS */\r
	66	\r
db49317b	67	UINT8 kcode; /* +11 key code: */\r
eaa9417a	68	UINT8 fn_h; /* freq latch */\r
eaa9417a	69	UINT8 pad2;\r
d2721b08	70	UINT32 fc; /* fnum,blk:adjusted to sample rate */\r
cc68a136	71	UINT32 block_fnum; /* current blk/fnum value for this slot (can be different betweeen slots of one channel in 3slot mode) */\r
	72	\r
	73	/* LFO */\r
	74	UINT8 AMmasks; /* AM enable flag */\r
eaa9417a	75	UINT8 pad3[3];\r
cc68a136	76	} FM_CH;\r
	77	\r
	78	typedef struct\r
	79	{\r
	80	int clock; /* master clock (Hz) */\r
	81	int rate; /* sampling rate (Hz) */\r
b542be46	82	double freqbase; /* 08 frequency base */\r
d2721b08	83	UINT8 address; /* 10 address register \| need_save */\r
d2721b08	84	UINT8 status; /* 11 status flag \| need_save */\r
cc68a136	85	UINT8 mode; /* mode CSM / 3SLOT */\r
eaa9417a	86	UINT8 pad;\r
cc68a136	87	int TA; /* timer a */\r
cc68a136	88	int TAC; /* timer a maxval */\r
d2721b08	89	int TAT; /* timer a ticker \| need_save */\r
cc68a136	90	UINT8 TB; /* timer b */\r
eaa9417a	91	UINT8 pad2[3];\r
cc68a136	92	int TBC; /* timer b maxval */\r
d2721b08	93	int TBT; /* timer b ticker \| need_save */\r
cc68a136	94	/* local time tables */\r
	95	INT32 dt_tab[8][32];/* DeTune table */\r
	96	} FM_ST;\r
	97	\r
	98	/***********************************************************/\r
	99	/* OPN unit */\r
	100	/***********************************************************/\r
	101	\r
	102	/* OPN 3slot struct */\r
	103	typedef struct\r
	104	{\r
	105	UINT32 fc[3]; /* fnum3,blk3: calculated */\r
	106	UINT8 fn_h; /* freq3 latch */\r
	107	UINT8 kcode[3]; /* key code */\r
	108	UINT32 block_fnum[3]; /* current fnum value for this slot (can be different betweeen slots of one channel in 3slot mode) */\r
	109	} FM_3SLOT;\r
	110	\r
	111	/* OPN/A/B common state */\r
	112	typedef struct\r
	113	{\r
	114	FM_ST ST; /* general state */\r
	115	FM_3SLOT SL3; /* 3 slot mode state */\r
	116	UINT32 pan; /* fm channels output mask (bit 1 = enable) */\r
	117	\r
eaa9417a	118	UINT32 eg_cnt; /* global envelope generator counter \| need_save */\r
	119	UINT32 eg_timer; /* global envelope generator counter works at frequency = chipclock/64/3 \| need_save */\r
	120	UINT32 eg_timer_add; /* step of eg_timer */\r
cc68a136	121	\r
cc68a136	122	/* LFO */\r
d2721b08	123	UINT32 lfo_cnt; /* need_save */\r
cc68a136	124	UINT32 lfo_inc;\r
	125	\r
	126	UINT32 lfo_freq[8]; /* LFO FREQ table */\r
	127	} FM_OPN;\r
	128	\r
	129	/* here's the virtual YM2612 */\r
	130	typedef struct\r
	131	{\r
d2721b08	132	UINT8 REGS[0x200]; /* registers (for save states) */\r
d2721b08	133	INT32 addr_A1; /* address line A1 \| need_save */\r
cc68a136	134	\r
eaa9417a	135	FM_CH CH[6]; /* channel state */\r
cc68a136	136	\r
cc68a136	137	/* dac output (YM2612) */\r
d2721b08	138	int dacen;\r
cc68a136	139	INT32 dacout;\r
	140	\r
	141	FM_OPN OPN; /* OPN state */\r
b542be46	142	\r
b542be46	143	UINT32 slot_mask; /* active slot mask (performance hack) */\r
cc68a136	144	} YM2612;\r
	145	#endif\r
	146	\r
4b9c5888	147	#ifndef EXTERNAL_YM2612\r
	148	extern YM2612 ym2612;\r
	149	#endif\r
b542be46	150	\r
cc68a136	151	void YM2612Init_(int baseclock, int rate);\r
cc68a136	152	void YM2612ResetChip_(void);\r
4f265db7	153	int YM2612UpdateOne_(int *buffer, int length, int stereo, int is_buf_empty);\r
cc68a136	154	\r
cc68a136	155	int YM2612Write_(unsigned int a, unsigned int v);\r
43e6eaad	156	//unsigned char YM2612Read_(void);\r
cc68a136	157	\r
	158	int YM2612PicoTick_(int n);\r
	159	void YM2612PicoStateLoad_(void);\r
	160	\r
	161	void *YM2612GetRegs(void);\r
d2721b08	162	void YM2612PicoStateSave2(int tat, int tbt);\r
d2721b08	163	int YM2612PicoStateLoad2(int tat, int tbt);\r
cc68a136	164	\r
	165	#ifndef __GP2X__\r
	166	#define YM2612Init YM2612Init_\r
	167	#define YM2612ResetChip YM2612ResetChip_\r
	168	#define YM2612UpdateOne YM2612UpdateOne_\r
cc68a136	169	#define YM2612PicoStateLoad YM2612PicoStateLoad_\r
	170	#else\r
	171	/* GP2X specific */\r
85f8e929	172	#include "../../platform/gp2x/940ctl.h"\r
cc68a136	173	extern int PicoOpt;\r
	174	#define YM2612Init(baseclock,rate) { \\r
	175	if (PicoOpt&0x200) YM2612Init_940(baseclock, rate); \\r
	176	else YM2612Init_(baseclock, rate); \\r
	177	}\r
	178	#define YM2612ResetChip() { \\r
	179	if (PicoOpt&0x200) YM2612ResetChip_940(); \\r
	180	else YM2612ResetChip_(); \\r
	181	}\r
85f8e929	182	#define YM2612UpdateOne(buffer,length,stereo,is_buf_empty) \\r
	183	(PicoOpt&0x200) ? YM2612UpdateOne_940(buffer, length, stereo, is_buf_empty) : \\r
	184	YM2612UpdateOne_(buffer, length, stereo, is_buf_empty);\r
cc68a136	185	#define YM2612PicoStateLoad() { \\r
	186	if (PicoOpt&0x200) YM2612PicoStateLoad_940(); \\r
	187	else YM2612PicoStateLoad_(); \\r
	188	}\r
	189	#endif /* __GP2X__ */\r
	190	\r
	191	\r
	192	#endif /* _H_FM_FM_ */\r