Added OPL3 supportsound-opl3

1 files changed, 172 insertions, 0 deletions

diff --git a/Nuked-OPL3/opl3.h b/Nuked-OPL3/opl3.h
new file mode 100644
index 0000000..3977f80
--- /dev/null
+++ b/Nuked-OPL3/opl3.h
@@ -0,0 +1,172 @@
+/* Nuked OPL3
+ * Copyright (C) 2013-2020 Nuke.YKT
+ *
+ * This file is part of Nuked OPL3.
+ *
+ * Nuked OPL3 is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 2.1
+ * of the License, or (at your option) any later version.
+ *
+ * Nuked OPL3 is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Nuked OPL3. If not, see <https://www.gnu.org/licenses/>.
+
+ *  Nuked OPL3 emulator.
+ *  Thanks:
+ *      MAME Development Team(Jarek Burczynski, Tatsuyuki Satoh):
+ *          Feedback and Rhythm part calculation information.
+ *      forums.submarine.org.uk(carbon14, opl3):
+ *          Tremolo and phase generator calculation information.
+ *      OPLx decapsulated(Matthew Gambrell, Olli Niemitalo):
+ *          OPL2 ROMs.
+ *      siliconpr0n.org(John McMaster, digshadow):
+ *          YMF262 and VRC VII decaps and die shots.
+ *
+ * version: 1.8
+ */
+
+#ifndef OPL_OPL3_H
+#define OPL_OPL3_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 *slots[2];
+    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, chb;
+    uint16_t chc, 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 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;
+    int16_t oldsamples[4];
+    int16_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];
+};
+
+void OPL3_Generate(opl3_chip *chip, int16_t *buf);
+void OPL3_GenerateResampled(opl3_chip *chip, int16_t *buf);
+void OPL3_Reset(opl3_chip *chip, uint32_t samplerate);
+void OPL3_WriteReg(opl3_chip *chip, uint16_t reg, uint8_t v);
+void OPL3_WriteRegBuffered(opl3_chip *chip, uint16_t reg, uint8_t v);
+void OPL3_GenerateStream(opl3_chip *chip, int16_t *sndptr, uint32_t numsamples);
+
+void OPL3_Generate4Ch(opl3_chip *chip, int16_t *buf4);
+void OPL3_Generate4ChResampled(opl3_chip *chip, int16_t *buf4);
+void OPL3_Generate4ChStream(opl3_chip *chip, int16_t *sndptr1, int16_t *sndptr2, uint32_t numsamples);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif