2 header file for software emulation for FM sound generator
\r
8 /* compiler dependence */
\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
15 typedef signed char INT8; /* signed 8bit */
\r
16 typedef signed short INT16; /* signed 16bit */
\r
17 typedef signed int INT32; /* signed 32bit */
\r
21 /* struct describing a single operator (SLOT) */
\r
24 INT32 *DT; /* #0x00 detune :dt_tab[DT] */
\r
25 UINT8 ar; /* #0x04 attack rate */
\r
26 UINT8 d1r; /* #0x05 decay rate */
\r
27 UINT8 d2r; /* #0x06 sustain rate */
\r
28 UINT8 rr; /* #0x07 release rate */
\r
29 UINT32 mul; /* #0x08 multiple :ML_TABLE[ML] */
\r
31 /* Phase Generator */
\r
32 UINT32 phase; /* #0x0c phase counter */
\r
33 UINT32 Incr; /* #0x10 phase step */
\r
35 UINT8 KSR; /* #0x14 key scale rate :3-KSR */
\r
36 UINT8 ksr; /* #0x15 key scale rate :kcode>>(3-KSR) */
\r
38 UINT8 key; /* #0x16 0=last key was KEY OFF, 1=KEY ON */
\r
40 /* Envelope Generator */
\r
41 UINT8 state; /* #0x17 phase type: EG_OFF=0, EG_REL, EG_SUS, EG_DEC, EG_ATT */
\r
42 UINT16 tl; /* #0x18 total level: TL << 3 */
\r
43 INT16 volume; /* #0x1a envelope counter */
\r
44 UINT32 sl; /* #0x1c sustain level:sl_table[SL] */
\r
46 UINT32 eg_pack_ar; /* #0x20 (attack state) */
\r
47 UINT32 eg_pack_d1r; /* #0x24 (decay state) */
\r
48 UINT32 eg_pack_d2r; /* #0x28 (sustain state) */
\r
49 UINT32 eg_pack_rr; /* #0x2c (release state) */
\r
55 FM_SLOT SLOT[4]; /* four SLOTs (operators) */
\r
57 UINT8 ALGO; /* algorithm */
\r
58 UINT8 FB; /* feedback shift */
\r
59 INT32 op1_out; /* op1 output for feedback */
\r
61 INT32 mem_value; /* delayed sample (MEM) value */
\r
63 INT32 pms; /* channel PMS */
\r
64 UINT8 ams; /* channel AMS */
\r
66 UINT8 kcode; /* key code: */
\r
67 UINT32 fc; /* fnum,blk:adjusted to sample rate */
\r
68 UINT32 block_fnum; /* current blk/fnum value for this slot (can be different betweeen slots of one channel in 3slot mode) */
\r
71 UINT8 AMmasks; /* AM enable flag */
\r
77 int clock; /* master clock (Hz) */
\r
78 int rate; /* sampling rate (Hz) */
\r
79 double freqbase; /* frequency base */
\r
80 UINT8 address; /* address register */
\r
81 UINT8 status; /* status flag */
\r
82 UINT8 mode; /* mode CSM / 3SLOT */
\r
83 UINT8 fn_h; /* freq latch */
\r
84 int TA; /* timer a */
\r
85 int TAC; /* timer a maxval */
\r
86 int TAT; /* timer a ticker */
\r
87 UINT8 TB; /* timer b */
\r
88 int TBC; /* timer b maxval */
\r
89 int TBT; /* timer b ticker */
\r
90 /* local time tables */
\r
91 INT32 dt_tab[8][32];/* DeTune table */
\r
94 /***********************************************************/
\r
96 /***********************************************************/
\r
98 /* OPN 3slot struct */
\r
101 UINT32 fc[3]; /* fnum3,blk3: calculated */
\r
102 UINT8 fn_h; /* freq3 latch */
\r
103 UINT8 kcode[3]; /* key code */
\r
104 UINT32 block_fnum[3]; /* current fnum value for this slot (can be different betweeen slots of one channel in 3slot mode) */
\r
107 /* OPN/A/B common state */
\r
110 FM_ST ST; /* general state */
\r
111 FM_3SLOT SL3; /* 3 slot mode state */
\r
112 UINT32 pan; /* fm channels output mask (bit 1 = enable) */
\r
114 UINT32 eg_cnt; /* #0xb38 global envelope generator counter */
\r
115 UINT32 eg_timer; /* #0xb3c global envelope generator counter works at frequency = chipclock/64/3 */
\r
116 UINT32 eg_timer_add; /* #0xb40 step of eg_timer */
\r
122 UINT32 lfo_freq[8]; /* LFO FREQ table */
\r
125 /* here's the virtual YM2612 */
\r
128 UINT8 REGS[0x200]; /* registers (for save states) */
\r
129 INT32 addr_A1; /* address line A1 */
\r
131 FM_CH CH[6]; /* channel state (0x168 bytes each)? */
\r
133 /* dac output (YM2612) */
\r
137 FM_OPN OPN; /* OPN state */
\r
143 void YM2612Init_(int baseclock, int rate);
\r
144 void YM2612ResetChip_(void);
\r
145 void YM2612UpdateOne_(short *buffer, int length, int stereo);
\r
147 int YM2612Write_(unsigned int a, unsigned int v);
\r
148 unsigned char YM2612Read_(void);
\r
150 int YM2612PicoTick_(int n);
\r
151 void YM2612PicoStateLoad_(void);
\r
153 void *YM2612GetRegs(void);
\r
156 #define YM2612Init YM2612Init_
\r
157 #define YM2612ResetChip YM2612ResetChip_
\r
158 #define YM2612UpdateOne YM2612UpdateOne_
\r
159 #define YM2612Write YM2612Write_
\r
160 #define YM2612Read YM2612Read_
\r
161 #define YM2612PicoTick YM2612PicoTick_
\r
162 #define YM2612PicoStateLoad YM2612PicoStateLoad_
\r
164 /* GP2X specific */
\r
165 #include "../../platform/gp2x/940ctl_ym2612.h"
\r
166 extern int PicoOpt;
\r
167 #define YM2612Init(baseclock,rate) { \
\r
168 if (PicoOpt&0x200) YM2612Init_940(baseclock, rate); \
\r
169 else YM2612Init_(baseclock, rate); \
\r
171 #define YM2612ResetChip() { \
\r
172 if (PicoOpt&0x200) YM2612ResetChip_940(); \
\r
173 else YM2612ResetChip_(); \
\r
175 #define YM2612UpdateOne(buffer,length,stereo) { \
\r
176 if (PicoOpt&0x200) YM2612UpdateOne_940(buffer, length, stereo); \
\r
177 else YM2612UpdateOne_(buffer, length, stereo); \
\r
179 #define YM2612Write(a,v) \
\r
180 (PicoOpt&0x200) ? YM2612Write_940(a, v) : YM2612Write_(a, v)
\r
181 #define YM2612Read() \
\r
182 (PicoOpt&0x200) ? YM2612Read_940() : YM2612Read_()
\r
183 #define YM2612PicoTick(n) \
\r
184 (PicoOpt&0x200) ? YM2612PicoTick_940(n) : YM2612PicoTick_(n)
\r
185 #define YM2612PicoStateLoad() { \
\r
186 if (PicoOpt&0x200) YM2612PicoStateLoad_940(); \
\r
187 else YM2612PicoStateLoad_(); \
\r
189 #endif /* __GP2X__ */
\r
192 #endif /* _H_FM_FM_ */
\r