d52ccc0eca
Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 20170425223739.6703-26-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
104 lines
4.1 KiB
C
104 lines
4.1 KiB
C
#ifndef FMOPL_H
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#define FMOPL_H
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#include <stdint.h>
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typedef void (*OPL_TIMERHANDLER)(int channel,double interval_Sec);
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/* !!!!! here is private section , do not access there member direct !!!!! */
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/* Saving is necessary for member of the 'R' mark for suspend/resume */
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/* ---------- OPL one of slot ---------- */
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typedef struct fm_opl_slot {
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int32_t TL; /* total level :TL << 8 */
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int32_t TLL; /* adjusted now TL */
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uint8_t KSR; /* key scale rate :(shift down bit) */
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int32_t *AR; /* attack rate :&AR_TABLE[AR<<2] */
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int32_t *DR; /* decay rate :&DR_TALBE[DR<<2] */
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int32_t SL; /* sustin level :SL_TALBE[SL] */
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int32_t *RR; /* release rate :&DR_TABLE[RR<<2] */
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uint8_t ksl; /* keyscale level :(shift down bits) */
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uint8_t ksr; /* key scale rate :kcode>>KSR */
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uint32_t mul; /* multiple :ML_TABLE[ML] */
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uint32_t Cnt; /* frequency count : */
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uint32_t Incr; /* frequency step : */
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/* envelope generator state */
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uint8_t eg_typ; /* envelope type flag */
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uint8_t evm; /* envelope phase */
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int32_t evc; /* envelope counter */
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int32_t eve; /* envelope counter end point */
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int32_t evs; /* envelope counter step */
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int32_t evsa; /* envelope step for AR :AR[ksr] */
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int32_t evsd; /* envelope step for DR :DR[ksr] */
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int32_t evsr; /* envelope step for RR :RR[ksr] */
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/* LFO */
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uint8_t ams; /* ams flag */
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uint8_t vib; /* vibrate flag */
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/* wave selector */
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int32_t **wavetable;
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}OPL_SLOT;
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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_t CON; /* connection type */
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uint8_t FB; /* feed back :(shift down bit) */
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int32_t *connect1; /* slot1 output pointer */
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int32_t *connect2; /* slot2 output pointer */
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int32_t op1_out[2]; /* slot1 output for selfeedback */
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/* phase generator state */
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uint32_t block_fnum; /* block+fnum : */
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uint8_t kcode; /* key code : KeyScaleCode */
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uint32_t fc; /* Freq. Increment base */
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uint32_t ksl_base; /* KeyScaleLevel Base step */
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uint8_t keyon; /* key on/off flag */
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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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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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uint8_t address; /* address register */
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uint8_t status; /* status flag */
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uint8_t statusmask; /* status mask */
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uint32_t mode; /* Reg.08 : CSM , notesel,etc. */
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/* Timer */
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int T[2]; /* timer counter */
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uint8_t st[2]; /* timer enable */
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/* FM channel slots */
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OPL_CH *P_CH; /* pointer of CH */
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int max_ch; /* maximum channel */
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/* Rhythm sention */
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uint8_t rhythm; /* Rhythm mode , key flag */
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/* time tables */
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int32_t AR_TABLE[75]; /* atttack rate tables */
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int32_t DR_TABLE[75]; /* decay rate tables */
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uint32_t FN_TABLE[1024]; /* fnumber -> increment counter */
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/* LFO */
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int32_t *ams_table;
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int32_t *vib_table;
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int32_t amsCnt;
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int32_t amsIncr;
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int32_t vibCnt;
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int32_t vibIncr;
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/* wave selector enable flag */
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uint8_t wavesel;
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/* external event callback handler */
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OPL_TIMERHANDLER TimerHandler; /* TIMER handler */
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int TimerParam; /* TIMER parameter */
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} FM_OPL;
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/* ---------- Generic interface section ---------- */
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FM_OPL *OPLCreate(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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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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void YM3812UpdateOne(FM_OPL *OPL, int16_t *buffer, int length);
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#endif
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