Merge pull request #4621 from jriwanek-forks/nuked

Nuked-OPL3: Update to latest as of 15/07/2024

src/include/86box/snd_opl_nuked.h

@@ -20,4 +20,181 @@
 #ifndef SOUND_OPL_NUKED_H
 #define SOUND_OPL_NUKED_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <inttypes.h>
+
+#ifndef OPL_ENABLE_STEREOEXT
+#define OPL_ENABLE_STEREOEXT 0
+#endif
+
+#define OPL_WRITEBUF_SIZE  1024
+#define OPL_WRITEBUF_DELAY 2
+
+typedef struct _opl3_slot    opl3_slot;
+typedef struct _opl3_channel opl3_channel;
+typedef struct _opl3_chip    opl3_chip;
+
+struct _opl3_slot {
+    opl3_channel *channel;
+    opl3_chip    *chip;
+    int16_t       out;
+    int16_t       fbmod;
+    int16_t      *mod;
+    int16_t       prout;
+    uint16_t      eg_rout;
+    uint16_t      eg_out;
+    uint8_t       eg_inc;
+    uint8_t       eg_gen;
+    uint8_t       eg_rate;
+    uint8_t       eg_ksl;
+    uint8_t      *trem;
+    uint8_t       reg_vib;
+    uint8_t       reg_type;
+    uint8_t       reg_ksr;
+    uint8_t       reg_mult;
+    uint8_t       reg_ksl;
+    uint8_t       reg_tl;
+    uint8_t       reg_ar;
+    uint8_t       reg_dr;
+    uint8_t       reg_sl;
+    uint8_t       reg_rr;
+    uint8_t       reg_wf;
+    uint8_t       key;
+    uint32_t      pg_reset;
+    uint32_t      pg_phase;
+    uint16_t      pg_phase_out;
+    uint8_t       slot_num;
+};
+
+struct _opl3_channel {
+    opl3_slot    *slotz[2]; // Don't use "slots" keyword to avoid conflict with Qt applications
+    opl3_channel *pair;
+    opl3_chip    *chip;
+    int16_t      *out[4];
+
+#if OPL_ENABLE_STEREOEXT
+    int32_t       leftpan;
+    int32_t       rightpan;
+#endif
+
+    uint8_t       chtype;
+    uint16_t      f_num;
+    uint8_t       block;
+    uint8_t       fb;
+    uint8_t       con;
+    uint8_t       alg;
+    uint8_t       ksv;
+    uint16_t      cha;
+    uint16_t      chb;
+    uint16_t      chc;
+    uint16_t      chd;
+    uint8_t       ch_num;
+};
+
+typedef struct _opl3_writebuf {
+    uint64_t time;
+    uint16_t reg;
+    uint8_t  data;
+} opl3_writebuf;
+
+struct _opl3_chip {
+    opl3_channel channel[18];
+    opl3_slot slot[36];
+    uint16_t timer;
+    uint64_t eg_timer;
+    uint8_t  eg_timerrem;
+    uint8_t  eg_state;
+    uint8_t  eg_add;
+    uint8_t  eg_timer_lo;
+    uint8_t  newm;
+    uint8_t  nts;
+    uint8_t  rhy;
+    uint8_t  vibpos;
+    uint8_t  vibshift;
+    uint8_t  tremolo;
+    uint8_t  tremolopos;
+    uint8_t  tremoloshift;
+    uint32_t noise;
+    int16_t  zeromod;
+    int32_t  mixbuff[4];
+    uint8_t  rm_hh_bit2;
+    uint8_t  rm_hh_bit3;
+    uint8_t  rm_hh_bit7;
+    uint8_t  rm_hh_bit8;
+    uint8_t  rm_tc_bit3;
+    uint8_t  rm_tc_bit5;
+
+#if OPL_ENABLE_STEREOEXT
+    uint8_t  stereoext;
+#endif
+
+    // OPL3L
+    int32_t  rateratio;
+    int32_t  samplecnt;
+    int32_t  oldsamples[4];
+    int32_t  samples[4];
+
+    uint64_t writebuf_samplecnt;
+    uint32_t writebuf_cur;
+    uint32_t writebuf_last;
+    uint64_t writebuf_lasttime;
+    opl3_writebuf writebuf[OPL_WRITEBUF_SIZE];
+};
+
+typedef struct {
+    opl3_chip opl;
+    int8_t    flags;
+    int8_t    pad;
+
+    uint16_t port;
+    uint8_t  status;
+    uint8_t  timer_ctrl;
+    uint16_t timer_count[2];
+    uint16_t timer_cur_count[2];
+
+    pc_timer_t timers[2];
+
+    int     pos;
+    int32_t buffer[MUSICBUFLEN * 2];
+} nuked_drv_t;
+
+enum {
+    FLAG_CYCLES = 0x02,
+    FLAG_OPL3   = 0x01
+};
+
+enum {
+    STAT_TMR_OVER  = 0x60,
+    STAT_TMR1_OVER = 0x40,
+    STAT_TMR2_OVER = 0x20,
+    STAT_TMR_ANY   = 0x80
+};
+
+enum {
+    CTRL_RESET      = 0x80,
+    CTRL_TMR_MASK   = 0x60,
+    CTRL_TMR1_MASK  = 0x40,
+    CTRL_TMR2_MASK  = 0x20,
+    CTRL_TMR2_START = 0x02,
+    CTRL_TMR1_START = 0x01
+};
+
+void OPL3_Generate(opl3_chip *chip, int32_t *buf);
+void OPL3_GenerateResampled(opl3_chip *chip, int32_t *buf);
+void OPL3_Reset(opl3_chip *chip, uint32_t samplerate);
+void OPL3_WriteReg(void *priv, uint16_t reg, uint8_t val);
+void OPL3_WriteRegBuffered(void *priv, uint16_t reg, uint8_t val);
+void OPL3_GenerateStream(opl3_chip *chip, int32_t *sndptr, uint32_t numsamples);
+
+static void OPL3_Generate4Ch(void *priv, int32_t *buf4);
+void OPL3_Generate4Ch_Resampled(opl3_chip *chip, int32_t *buf4);
+void OPL3_Generate4Ch_Stream(opl3_chip *chip, int32_t *sndptr1, int32_t *sndptr2, uint32_t numsamples);
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif /*SOUND_OPL_NUKED_H*/