apps/codecs/libgme/emu2413.h

   1 #ifndef _EMU2413_H_
   2 #define _EMU2413_H_
   3
   4 #include "blargg_common.h"
   5 #include "emutypes.h"
   6
   7 #ifdef EMU2413_DLL_EXPORTS
   8   #define EMU2413_API __declspec(dllexport)
   9 #elif defined(EMU2413_DLL_IMPORTS)
  10   #define EMU2413_API __declspec(dllimport)
  11 #else
  12   #define EMU2413_API
  13 #endif
  14
  15 #ifdef __cplusplus
  16 extern "C" {
  17 #endif
  18
  19 #define AUDIO_MONO_BUFFER_SIZE    1024
  20
  21 #define PI 3.14159265358979323846
  22
  23 enum OPLL_TONE_ENUM {OPLL_2413_TONE=0, OPLL_VRC7_TONE=1, OPLL_281B_TONE=2} ;
  24
  25 /* voice data */
  26 typedef struct __OPLL_PATCH {
  27   e_uint32 TL,FB,EG,ML,AR,DR,SL,RR,KR,KL,AM,PM,WF ;
  28 } OPLL_PATCH ;
  29
  30 /* slot */
  31 typedef struct __OPLL_SLOT {
  32
  33   OPLL_PATCH *patch;
  34
  35   e_int32 type ;          /* 0 : modulator 1 : carrier */
  36
  37   /* OUTPUT */
  38   e_int32 feedback ;
  39   e_int32 output[2] ;   /* Output value of slot */
  40
  41   /* for Phase Generator (PG) */
  42   e_uint16 *sintbl ;    /* Wavetable */
  43   e_uint32 phase ;      /* Phase */
  44   e_uint32 dphase ;     /* Phase increment amount */
  45   e_uint32 pgout ;      /* output */
  46
  47   /* for Envelope Generator (EG) */
  48   e_int32 fnum ;          /* F-Number */
  49   e_int32 block ;         /* Block */
  50   e_int32 volume ;        /* Current volume */
  51   e_int32 sustine ;       /* Sustine 1 = ON, 0 = OFF */
  52   e_uint32 tll ;              /* Total Level + Key scale level*/
  53   e_uint32 rks ;        /* Key scale offset (Rks) */
  54   e_int32 eg_mode ;       /* Current state */
  55   e_uint32 eg_phase ;   /* Phase */
  56   e_uint32 eg_dphase ;  /* Phase increment amount */
  57   e_uint32 egout ;      /* output */
  58
  59 } OPLL_SLOT ;
  60
  61 /* Mask */
  62 #define OPLL_MASK_CH(x) (1<<(x))
  63 #define OPLL_MASK_HH (1<<(9))
  64 #define OPLL_MASK_CYM (1<<(10))
  65 #define OPLL_MASK_TOM (1<<(11))
  66 #define OPLL_MASK_SD (1<<(12))
  67 #define OPLL_MASK_BD (1<<(13))
  68 #define OPLL_MASK_RHYTHM ( OPLL_MASK_HH | OPLL_MASK_CYM | OPLL_MASK_TOM | OPLL_MASK_SD | OPLL_MASK_BD )
  69
  70 /* opll */
  71 typedef struct __OPLL {
  72
  73   e_uint32 adr ;
  74   e_int32 out ;
  75
  76 #ifndef EMU2413_COMPACTION
  77   e_uint32 realstep ;
  78   e_uint32 oplltime ;
  79   e_uint32 opllstep ;
  80   e_int32 prev, next ;
  81   e_int32 sprev[2],snext[2];
  82   e_uint32 pan[16];
  83 #endif
  84
  85   /* Register */
  86   e_uint8 reg[0x40] ;
  87   e_int32 slot_on_flag[18] ;
  88
  89   /* Pitch Modulator */
  90   e_uint32 pm_phase ;
  91   e_int32 lfo_pm ;
  92
  93   /* Amp Modulator */
  94   e_int32 am_phase ;
  95   e_int32 lfo_am ;
  96
  97   e_uint32 quality;
  98
  99   /* Noise Generator */
 100   e_uint32 noise_seed ;
 101
 102   /* Channel Data */
 103   e_int32 patch_number[9];
 104   e_int32 key_status[9] ;
 105
 106   /* Slot */
 107   OPLL_SLOT slot[18] ;
 108
 109   /* Voice Data */
 110   OPLL_PATCH patch[19*2] ;
 111   e_int32 patch_update[2] ; /* flag for check patch update */
 112
 113   e_uint32 mask ;
 114   e_uint32 current_mask;
 115   e_uint32 status;
 116
 117   e_uint32 internal_mute;
 118   e_int16 buffer[AUDIO_MONO_BUFFER_SIZE];
 119 } OPLL ;
 120
 121 /* Create Object */
 122 EMU2413_API void OPLL_new(OPLL *, e_uint32 clk, e_uint32 rate) ;
 123 EMU2413_API void OPLL_delete(OPLL *) ;
 124
 125 /* Setup */
 126 EMU2413_API void OPLL_reset(OPLL *) ;
 127 EMU2413_API void OPLL_reset_patch(OPLL *, e_int32) ;
 128 EMU2413_API void OPLL_set_rate(OPLL *opll, e_uint32 r) ;
 129 EMU2413_API void OPLL_set_quality(OPLL *opll, e_uint32 q) ;
 130 EMU2413_API void OPLL_set_pan(OPLL *, e_uint32 ch, e_uint32 pan);
 131 EMU2413_API void OPLL_set_internal_mute(OPLL *, e_uint32 mute);
 132 EMU2413_API e_uint32 OPLL_is_internal_muted(OPLL *);
 133
 134 /* Port/Register access */
 135 EMU2413_API void OPLL_writeIO(OPLL *, e_uint32 reg, e_uint32 val); ICODE_ATTR
 136 EMU2413_API void OPLL_writeReg(OPLL *, e_uint32 reg, e_uint32 val); ICODE_ATTR
 137 EMU2413_API e_uint32 OPLL_read(OPLL *, e_uint32 port);
 138
 139 /* Synthsize */
 140 EMU2413_API e_int16 OPLL_calc(OPLL *) ; ICODE_ATTR
 141 EMU2413_API void OPLL_calc_stereo(OPLL *, e_int32 out[2]) ; ICODE_ATTR
 142 EMU2413_API e_int16 *OPLL_update_buffer(OPLL *, e_uint32 length) ; ICODE_ATTR
 143
 144 /* Misc */
 145 EMU2413_API void OPLL_setPatch(OPLL *, const e_uint8 *dump) ;
 146 EMU2413_API void OPLL_copyPatch(OPLL *, e_int32, OPLL_PATCH *) ;
 147 EMU2413_API void OPLL_forceRefresh(OPLL *) ;
 148 /* Utility */
 149 EMU2413_API void OPLL_dump2patch(const e_uint8 *dump, OPLL_PATCH *patch) ;
 150 EMU2413_API void OPLL_patch2dump(const OPLL_PATCH *patch, e_uint8 *dump) ;
 151 EMU2413_API void OPLL_getDefaultPatch(e_int32 type, e_int32 num, OPLL_PATCH *) ;
 152
 153 /* Channel Mask */
 154 EMU2413_API e_uint32 OPLL_setMask(OPLL *, e_uint32 mask) ;
 155 EMU2413_API e_uint32 OPLL_toggleMask(OPLL *, e_uint32 mask) ;
 156
 157 #define dump2patch OPLL_dump2patch
 158
 159 #ifdef __cplusplus
 160 }
 161 #endif
 162
 163 #endif
 164