diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/chips/nuked/old/nukedopl3.c | 1391 | ||||
| -rw-r--r-- | src/chips/nuked/old/nukedopl3.h | 154 |
2 files changed, 0 insertions, 1545 deletions
diff --git a/src/chips/nuked/old/nukedopl3.c b/src/chips/nuked/old/nukedopl3.c deleted file mode 100644 index 6ae1eb7..0000000 --- a/src/chips/nuked/old/nukedopl3.c +++ /dev/null @@ -1,1391 +0,0 @@ -/* - * Copyright (C) 2013-2016 Alexey Khokholov (Nuke.YKT) - * - * This library 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. - * - * This library 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - * 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. - * - * version: 1.7.4 - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include "nukedopl3.h" - -#define RSM_FRAC 10 - -/* Channel types */ - -enum { - ch_2op = 0, - ch_4op = 1, - ch_4op2 = 2, - ch_drum = 3 -}; - -/* Envelope key types */ - -enum { - egk_norm = 0x01, - egk_drum = 0x02 -}; - - -/* - * logsin table - */ - -static const Bit16u logsinrom[512] = { - 0x859, 0x6c3, 0x607, 0x58b, 0x52e, 0x4e4, 0x4a6, 0x471, - 0x443, 0x41a, 0x3f5, 0x3d3, 0x3b5, 0x398, 0x37e, 0x365, - 0x34e, 0x339, 0x324, 0x311, 0x2ff, 0x2ed, 0x2dc, 0x2cd, - 0x2bd, 0x2af, 0x2a0, 0x293, 0x286, 0x279, 0x26d, 0x261, - 0x256, 0x24b, 0x240, 0x236, 0x22c, 0x222, 0x218, 0x20f, - 0x206, 0x1fd, 0x1f5, 0x1ec, 0x1e4, 0x1dc, 0x1d4, 0x1cd, - 0x1c5, 0x1be, 0x1b7, 0x1b0, 0x1a9, 0x1a2, 0x19b, 0x195, - 0x18f, 0x188, 0x182, 0x17c, 0x177, 0x171, 0x16b, 0x166, - 0x160, 0x15b, 0x155, 0x150, 0x14b, 0x146, 0x141, 0x13c, - 0x137, 0x133, 0x12e, 0x129, 0x125, 0x121, 0x11c, 0x118, - 0x114, 0x10f, 0x10b, 0x107, 0x103, 0x0ff, 0x0fb, 0x0f8, - 0x0f4, 0x0f0, 0x0ec, 0x0e9, 0x0e5, 0x0e2, 0x0de, 0x0db, - 0x0d7, 0x0d4, 0x0d1, 0x0cd, 0x0ca, 0x0c7, 0x0c4, 0x0c1, - 0x0be, 0x0bb, 0x0b8, 0x0b5, 0x0b2, 0x0af, 0x0ac, 0x0a9, - 0x0a7, 0x0a4, 0x0a1, 0x09f, 0x09c, 0x099, 0x097, 0x094, - 0x092, 0x08f, 0x08d, 0x08a, 0x088, 0x086, 0x083, 0x081, - 0x07f, 0x07d, 0x07a, 0x078, 0x076, 0x074, 0x072, 0x070, - 0x06e, 0x06c, 0x06a, 0x068, 0x066, 0x064, 0x062, 0x060, - 0x05e, 0x05c, 0x05b, 0x059, 0x057, 0x055, 0x053, 0x052, - 0x050, 0x04e, 0x04d, 0x04b, 0x04a, 0x048, 0x046, 0x045, - 0x043, 0x042, 0x040, 0x03f, 0x03e, 0x03c, 0x03b, 0x039, - 0x038, 0x037, 0x035, 0x034, 0x033, 0x031, 0x030, 0x02f, - 0x02e, 0x02d, 0x02b, 0x02a, 0x029, 0x028, 0x027, 0x026, - 0x025, 0x024, 0x023, 0x022, 0x021, 0x020, 0x01f, 0x01e, - 0x01d, 0x01c, 0x01b, 0x01a, 0x019, 0x018, 0x017, 0x017, - 0x016, 0x015, 0x014, 0x014, 0x013, 0x012, 0x011, 0x011, - 0x010, 0x00f, 0x00f, 0x00e, 0x00d, 0x00d, 0x00c, 0x00c, - 0x00b, 0x00a, 0x00a, 0x009, 0x009, 0x008, 0x008, 0x007, - 0x007, 0x007, 0x006, 0x006, 0x005, 0x005, 0x005, 0x004, - 0x004, 0x004, 0x003, 0x003, 0x003, 0x002, 0x002, 0x002, - 0x002, 0x001, 0x001, 0x001, 0x001, 0x001, 0x001, 0x001, - 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, - 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, - 0x001, 0x001, 0x001, 0x001, 0x001, 0x001, 0x001, 0x002, - 0x002, 0x002, 0x002, 0x003, 0x003, 0x003, 0x004, 0x004, - 0x004, 0x005, 0x005, 0x005, 0x006, 0x006, 0x007, 0x007, - 0x007, 0x008, 0x008, 0x009, 0x009, 0x00a, 0x00a, 0x00b, - 0x00c, 0x00c, 0x00d, 0x00d, 0x00e, 0x00f, 0x00f, 0x010, - 0x011, 0x011, 0x012, 0x013, 0x014, 0x014, 0x015, 0x016, - 0x017, 0x017, 0x018, 0x019, 0x01a, 0x01b, 0x01c, 0x01d, - 0x01e, 0x01f, 0x020, 0x021, 0x022, 0x023, 0x024, 0x025, - 0x026, 0x027, 0x028, 0x029, 0x02a, 0x02b, 0x02d, 0x02e, - 0x02f, 0x030, 0x031, 0x033, 0x034, 0x035, 0x037, 0x038, - 0x039, 0x03b, 0x03c, 0x03e, 0x03f, 0x040, 0x042, 0x043, - 0x045, 0x046, 0x048, 0x04a, 0x04b, 0x04d, 0x04e, 0x050, - 0x052, 0x053, 0x055, 0x057, 0x059, 0x05b, 0x05c, 0x05e, - 0x060, 0x062, 0x064, 0x066, 0x068, 0x06a, 0x06c, 0x06e, - 0x070, 0x072, 0x074, 0x076, 0x078, 0x07a, 0x07d, 0x07f, - 0x081, 0x083, 0x086, 0x088, 0x08a, 0x08d, 0x08f, 0x092, - 0x094, 0x097, 0x099, 0x09c, 0x09f, 0x0a1, 0x0a4, 0x0a7, - 0x0a9, 0x0ac, 0x0af, 0x0b2, 0x0b5, 0x0b8, 0x0bb, 0x0be, - 0x0c1, 0x0c4, 0x0c7, 0x0ca, 0x0cd, 0x0d1, 0x0d4, 0x0d7, - 0x0db, 0x0de, 0x0e2, 0x0e5, 0x0e9, 0x0ec, 0x0f0, 0x0f4, - 0x0f8, 0x0fb, 0x0ff, 0x103, 0x107, 0x10b, 0x10f, 0x114, - 0x118, 0x11c, 0x121, 0x125, 0x129, 0x12e, 0x133, 0x137, - 0x13c, 0x141, 0x146, 0x14b, 0x150, 0x155, 0x15b, 0x160, - 0x166, 0x16b, 0x171, 0x177, 0x17c, 0x182, 0x188, 0x18f, - 0x195, 0x19b, 0x1a2, 0x1a9, 0x1b0, 0x1b7, 0x1be, 0x1c5, - 0x1cd, 0x1d4, 0x1dc, 0x1e4, 0x1ec, 0x1f5, 0x1fd, 0x206, - 0x20f, 0x218, 0x222, 0x22c, 0x236, 0x240, 0x24b, 0x256, - 0x261, 0x26d, 0x279, 0x286, 0x293, 0x2a0, 0x2af, 0x2bd, - 0x2cd, 0x2dc, 0x2ed, 0x2ff, 0x311, 0x324, 0x339, 0x34e, - 0x365, 0x37e, 0x398, 0x3b5, 0x3d3, 0x3f5, 0x41a, 0x443, - 0x471, 0x4a6, 0x4e4, 0x52e, 0x58b, 0x607, 0x6c3, 0x859 -}; - -/* - * exp table - */ - -static const Bit16u exprom[256] = { - 0xff4, 0xfea, 0xfde, 0xfd4, 0xfc8, 0xfbe, 0xfb4, 0xfa8, - 0xf9e, 0xf92, 0xf88, 0xf7e, 0xf72, 0xf68, 0xf5c, 0xf52, - 0xf48, 0xf3e, 0xf32, 0xf28, 0xf1e, 0xf14, 0xf08, 0xefe, - 0xef4, 0xeea, 0xee0, 0xed4, 0xeca, 0xec0, 0xeb6, 0xeac, - 0xea2, 0xe98, 0xe8e, 0xe84, 0xe7a, 0xe70, 0xe66, 0xe5c, - 0xe52, 0xe48, 0xe3e, 0xe34, 0xe2a, 0xe20, 0xe16, 0xe0c, - 0xe04, 0xdfa, 0xdf0, 0xde6, 0xddc, 0xdd2, 0xdca, 0xdc0, - 0xdb6, 0xdac, 0xda4, 0xd9a, 0xd90, 0xd88, 0xd7e, 0xd74, - 0xd6a, 0xd62, 0xd58, 0xd50, 0xd46, 0xd3c, 0xd34, 0xd2a, - 0xd22, 0xd18, 0xd10, 0xd06, 0xcfe, 0xcf4, 0xcec, 0xce2, - 0xcda, 0xcd0, 0xcc8, 0xcbe, 0xcb6, 0xcae, 0xca4, 0xc9c, - 0xc92, 0xc8a, 0xc82, 0xc78, 0xc70, 0xc68, 0xc60, 0xc56, - 0xc4e, 0xc46, 0xc3c, 0xc34, 0xc2c, 0xc24, 0xc1c, 0xc12, - 0xc0a, 0xc02, 0xbfa, 0xbf2, 0xbea, 0xbe0, 0xbd8, 0xbd0, - 0xbc8, 0xbc0, 0xbb8, 0xbb0, 0xba8, 0xba0, 0xb98, 0xb90, - 0xb88, 0xb80, 0xb78, 0xb70, 0xb68, 0xb60, 0xb58, 0xb50, - 0xb48, 0xb40, 0xb38, 0xb32, 0xb2a, 0xb22, 0xb1a, 0xb12, - 0xb0a, 0xb02, 0xafc, 0xaf4, 0xaec, 0xae4, 0xade, 0xad6, - 0xace, 0xac6, 0xac0, 0xab8, 0xab0, 0xaa8, 0xaa2, 0xa9a, - 0xa92, 0xa8c, 0xa84, 0xa7c, 0xa76, 0xa6e, 0xa68, 0xa60, - 0xa58, 0xa52, 0xa4a, 0xa44, 0xa3c, 0xa36, 0xa2e, 0xa28, - 0xa20, 0xa18, 0xa12, 0xa0c, 0xa04, 0x9fe, 0x9f6, 0x9f0, - 0x9e8, 0x9e2, 0x9da, 0x9d4, 0x9ce, 0x9c6, 0x9c0, 0x9b8, - 0x9b2, 0x9ac, 0x9a4, 0x99e, 0x998, 0x990, 0x98a, 0x984, - 0x97c, 0x976, 0x970, 0x96a, 0x962, 0x95c, 0x956, 0x950, - 0x948, 0x942, 0x93c, 0x936, 0x930, 0x928, 0x922, 0x91c, - 0x916, 0x910, 0x90a, 0x904, 0x8fc, 0x8f6, 0x8f0, 0x8ea, - 0x8e4, 0x8de, 0x8d8, 0x8d2, 0x8cc, 0x8c6, 0x8c0, 0x8ba, - 0x8b4, 0x8ae, 0x8a8, 0x8a2, 0x89c, 0x896, 0x890, 0x88a, - 0x884, 0x87e, 0x878, 0x872, 0x86c, 0x866, 0x860, 0x85a, - 0x854, 0x850, 0x84a, 0x844, 0x83e, 0x838, 0x832, 0x82c, - 0x828, 0x822, 0x81c, 0x816, 0x810, 0x80c, 0x806, 0x800 -}; - -/* - * freq mult table multiplied by 2 - * - * 1/2, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 12, 12, 15, 15 - */ - -static const Bit8u mt[16] = { - 1, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 20, 24, 24, 30, 30 -}; - -/* - * ksl table - */ - -static const Bit8u kslrom[16] = { - 0, 32, 40, 45, 48, 51, 53, 55, 56, 58, 59, 60, 61, 62, 63, 64 -}; - -static const Bit8u kslshift[4] = { - 8, 1, 2, 0 -}; - -/* - * envelope generator constants - */ - -static const Bit8u eg_incstep[3][4][8] = { - { - { 0, 0, 0, 0, 0, 0, 0, 0 }, - { 0, 0, 0, 0, 0, 0, 0, 0 }, - { 0, 0, 0, 0, 0, 0, 0, 0 }, - { 0, 0, 0, 0, 0, 0, 0, 0 } - }, - { - { 0, 1, 0, 1, 0, 1, 0, 1 }, - { 0, 1, 0, 1, 1, 1, 0, 1 }, - { 0, 1, 1, 1, 0, 1, 1, 1 }, - { 0, 1, 1, 1, 1, 1, 1, 1 } - }, - { - { 1, 1, 1, 1, 1, 1, 1, 1 }, - { 2, 2, 1, 1, 1, 1, 1, 1 }, - { 2, 2, 1, 1, 2, 2, 1, 1 }, - { 2, 2, 2, 2, 2, 2, 1, 1 } - } -}; - -static const Bit8u eg_incdesc[16] = { - 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2 -}; - -static const Bit8s eg_incsh[16] = { - 0, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, -1, -2 -}; - -/* - * address decoding - */ - -static const Bit8s ad_slot[0x20] = { - 0, 1, 2, 3, 4, 5, -1, -1, 6, 7, 8, 9, 10, 11, -1, -1, - 12, 13, 14, 15, 16, 17, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 -}; - -static const Bit8u ch_slot[18] = { - 0, 1, 2, 6, 7, 8, 12, 13, 14, 18, 19, 20, 24, 25, 26, 30, 31, 32 -}; - -/* - * Envelope generator - */ - -static void OPL3_EnvelopeGenOff(opl3_slot *slot); -static void OPL3_EnvelopeGenAttack(opl3_slot *slot); -static void OPL3_EnvelopeGenDecay(opl3_slot *slot); -static void OPL3_EnvelopeGenSustain(opl3_slot *slot); -static void OPL3_EnvelopeGenRelease(opl3_slot *slot); - -typedef void(*envelope_genfunc)(opl3_slot *slot); - -envelope_genfunc envelope_gen[5] = { - OPL3_EnvelopeGenOff, - OPL3_EnvelopeGenAttack, - OPL3_EnvelopeGenDecay, - OPL3_EnvelopeGenSustain, - OPL3_EnvelopeGenRelease -}; - -enum envelope_gen_num -{ - envelope_gen_num_off = 0, - envelope_gen_num_attack = 1, - envelope_gen_num_decay = 2, - envelope_gen_num_sustain = 3, - envelope_gen_num_release = 4 -}; - -static Bit8u OPL3_EnvelopeCalcRate(opl3_slot *slot, Bit8u reg_rate) -{ - Bit8u rate; - if (reg_rate == 0x00) - { - return 0x00; - } - rate = (reg_rate << 2) - + (slot->reg_ksr ? slot->channel->ksv : (slot->channel->ksv >> 2)); - if (rate > 0x3c) - { - rate = 0x3c; - } - return rate; -} - -static void OPL3_EnvelopeUpdateKSL(opl3_slot *slot) -{ - Bit16s ksl = (kslrom[slot->channel->f_num >> 6] << 2) - - ((0x08 - slot->channel->block) << 5); - if (ksl < 0) - { - ksl = 0; - } - slot->eg_ksl = (Bit8u)ksl; -} - -static void OPL3_EnvelopeUpdateRate(opl3_slot *slot) -{ - switch (slot->eg_gen) - { - case envelope_gen_num_off: - case envelope_gen_num_attack: - slot->eg_rate = OPL3_EnvelopeCalcRate(slot, slot->reg_ar); - break; - case envelope_gen_num_decay: - slot->eg_rate = OPL3_EnvelopeCalcRate(slot, slot->reg_dr); - break; - case envelope_gen_num_sustain: - case envelope_gen_num_release: - slot->eg_rate = OPL3_EnvelopeCalcRate(slot, slot->reg_rr); - break; - } -} - -static void OPL3_EnvelopeGenOff(opl3_slot *slot) -{ - slot->eg_rout = 0x1ff; -} - -static void OPL3_EnvelopeGenAttack(opl3_slot *slot) -{ - if (slot->eg_rout == 0x00) - { - slot->eg_gen = envelope_gen_num_decay; - OPL3_EnvelopeUpdateRate(slot); - return; - } - slot->eg_rout += ((~slot->eg_rout) * slot->eg_inc) >> 3; - if (slot->eg_rout < 0x00) - { - slot->eg_rout = 0x00; - } -} - -static void OPL3_EnvelopeGenDecay(opl3_slot *slot) -{ - if (slot->eg_rout >= slot->reg_sl << 4) - { - slot->eg_gen = envelope_gen_num_sustain; - OPL3_EnvelopeUpdateRate(slot); - return; - } - slot->eg_rout += slot->eg_inc; -} - -static void OPL3_EnvelopeGenSustain(opl3_slot *slot) -{ - if (!slot->reg_type) - { - OPL3_EnvelopeGenRelease(slot); - } -} - -static void OPL3_EnvelopeGenRelease(opl3_slot *slot) -{ - if (slot->eg_rout >= 0x1ff) - { - slot->eg_gen = envelope_gen_num_off; - slot->eg_rout = 0x1ff; - OPL3_EnvelopeUpdateRate(slot); - return; - } - slot->eg_rout += slot->eg_inc; -} - -static void OPL3_EnvelopeCalc(opl3_slot *slot) -{ - Bit8u rate_h, rate_l; - Bit8u inc = 0; - rate_h = slot->eg_rate >> 2; - rate_l = slot->eg_rate & 3; - if (eg_incsh[rate_h] > 0) - { - if ((slot->chip->timer & ((1 << eg_incsh[rate_h]) - 1)) == 0) - { - inc = eg_incstep[eg_incdesc[rate_h]][rate_l] - [((slot->chip->timer)>> eg_incsh[rate_h]) & 0x07]; - } - } - else - { - inc = eg_incstep[eg_incdesc[rate_h]][rate_l] - [slot->chip->timer & 0x07] << (-eg_incsh[rate_h]); - } - slot->eg_inc = inc; - slot->eg_out = slot->eg_rout + (slot->reg_tl << 2) - + (slot->eg_ksl >> kslshift[slot->reg_ksl]) + *slot->trem; - if (slot->eg_out > 0x1ff) /* TODO: Remove this if possible */ - { - slot->eg_out = 0x1ff; - } - slot->eg_out <<= 3; - - envelope_gen[slot->eg_gen](slot); -} - -static void OPL3_EnvelopeKeyOn(opl3_slot *slot, Bit8u type) -{ - if (!slot->key) - { - slot->eg_gen = envelope_gen_num_attack; - OPL3_EnvelopeUpdateRate(slot); - if ((slot->eg_rate >> 2) == 0x0f) - { - slot->eg_gen = envelope_gen_num_decay; - OPL3_EnvelopeUpdateRate(slot); - slot->eg_rout = 0x00; - } - slot->pg_phase = 0x00; - } - slot->key |= type; -} - -static void OPL3_EnvelopeKeyOff(opl3_slot *slot, Bit8u type) -{ - if (slot->key) - { - slot->key &= (~type); - if (!slot->key) - { - slot->eg_gen = envelope_gen_num_release; - OPL3_EnvelopeUpdateRate(slot); - } - } -} - -/* - * Phase Generator - */ - -static void OPL3_PhaseGenerate(opl3_slot *slot) -{ - Bit16u f_num; - Bit32u basefreq; - - f_num = slot->channel->f_num; - if (slot->reg_vib) - { - Bit8s range; - Bit8u vibpos; - - range = (f_num >> 7) & 7; - vibpos = slot->chip->vibpos; - - if (!(vibpos & 3)) - { - range = 0; - } - else if (vibpos & 1) - { - range >>= 1; - } - range >>= slot->chip->vibshift; - - if (vibpos & 4) - { - range = -range; - } - f_num += range; - } - basefreq = (f_num << slot->channel->block) >> 1; - slot->pg_phase += (basefreq * mt[slot->reg_mult]) >> 1; -} - -/* - * Noise Generator - */ - -static void OPL3_NoiseGenerate(opl3_chip *chip) -{ - if (chip->noise & 0x01) - { - chip->noise ^= 0x800302; - } - chip->noise >>= 1; -} - -/* - * Slot - */ - -static void OPL3_SlotWrite20(opl3_slot *slot, Bit8u data) -{ - if ((data >> 7) & 0x01) - { - slot->trem = &slot->chip->tremolo; - } - else - { - slot->trem = (Bit8u*)&slot->chip->zeromod; - } - slot->reg_vib = (data >> 6) & 0x01; - slot->reg_type = (data >> 5) & 0x01; - slot->reg_ksr = (data >> 4) & 0x01; - slot->reg_mult = data & 0x0f; - OPL3_EnvelopeUpdateRate(slot); -} - -static void OPL3_SlotWrite40(opl3_slot *slot, Bit8u data) -{ - slot->reg_ksl = (data >> 6) & 0x03; - slot->reg_tl = data & 0x3f; - OPL3_EnvelopeUpdateKSL(slot); -} - -static void OPL3_SlotWrite60(opl3_slot *slot, Bit8u data) -{ - slot->reg_ar = (data >> 4) & 0x0f; - slot->reg_dr = data & 0x0f; - OPL3_EnvelopeUpdateRate(slot); -} - -static void OPL3_SlotWrite80(opl3_slot *slot, Bit8u data) -{ - slot->reg_sl = (data >> 4) & 0x0f; - if (slot->reg_sl == 0x0f) - { - slot->reg_sl = 0x1f; - } - slot->reg_rr = data & 0x0f; - OPL3_EnvelopeUpdateRate(slot); -} - -static void OPL3_SlotWriteE0(opl3_slot *slot, Bit8u data) -{ - slot->reg_wf = data & 0x07; - if (slot->chip->newm == 0x00) - { - slot->reg_wf &= 0x03; - } - - switch (slot->reg_wf) - { - case 1: - case 4: - case 5: - slot->maskzero = 0x200; - break; - case 3: - slot->maskzero = 0x100; - break; - default: - slot->maskzero = 0; - break; - } - - switch (slot->reg_wf) - { - case 4: - slot->signpos = (31-8); /* sigext of (phase & 0x100) */ - break; - case 0: - case 6: - case 7: - slot->signpos = (31-9); /* sigext of (phase & 0x200) */ - break; - default: - slot->signpos = (31-16); /* set "neg" to zero */ - break; - } - - switch (slot->reg_wf) - { - case 4: - case 5: - slot->phaseshift = 1; - break; - case 6: - slot->phaseshift = 16; /* set phase to zero and flag for non-sin wave */ - break; - case 7: - slot->phaseshift = 32; /* no shift (work by mod 32), but flag for non-sin wave */ - break; - default: - slot->phaseshift = 0; - break; - } -} - -static void OPL3_SlotGeneratePhase(opl3_slot *slot, Bit16u phase) -{ - Bit32u neg, level; - Bit8u phaseshift; - - /* Fast paths for mute segments */ - if (phase & slot->maskzero) - { - slot->out = 0; - return; - } - - neg = (Bit32s)((Bit32u)phase << slot->signpos) >> 31; - phaseshift = slot->phaseshift; - level = slot->eg_out; - - phase <<= phaseshift; - if (phaseshift <= 1) - { - level += logsinrom[phase & 0x1ff]; - } - else - { - level += ((phase ^ neg) & 0x3ff) << 3; - } - slot->out = exprom[level & 0xff] >> (level >> 8) ^ neg; -} - -static void OPL3_SlotGenerate(opl3_slot *slot) -{ - OPL3_SlotGeneratePhase(slot, (Bit16u)(slot->pg_phase >> 9) + *slot->mod); -} - -static void OPL3_SlotGenerateZM(opl3_slot *slot) -{ - OPL3_SlotGeneratePhase(slot, (Bit16u)(slot->pg_phase >> 9)); -} - -static void OPL3_SlotCalcFB(opl3_slot *slot) -{ - if (slot->channel->fb != 0x00) - { - slot->fbmod = (slot->prout + slot->out) >> (0x09 - slot->channel->fb); - } - else - { - slot->fbmod = 0; - } - slot->prout = slot->out; -} - -/* - * Channel - */ - -static void OPL3_ChannelSetupAlg(opl3_channel *channel); - -static void OPL3_ChannelUpdateRhythm(opl3_chip *chip, Bit8u data) -{ - opl3_channel *channel6; - opl3_channel *channel7; - opl3_channel *channel8; - Bit8u chnum; - - chip->rhy = data & 0x3f; - if (chip->rhy & 0x20) - { - channel6 = &chip->channel[6]; - channel7 = &chip->channel[7]; - channel8 = &chip->channel[8]; - channel6->out[0] = &channel6->slots[1]->out; - channel6->out[1] = &channel6->slots[1]->out; - channel6->out[2] = &chip->zeromod; - channel6->out[3] = &chip->zeromod; - channel7->out[0] = &channel7->slots[0]->out; - channel7->out[1] = &channel7->slots[0]->out; - channel7->out[2] = &channel7->slots[1]->out; - channel7->out[3] = &channel7->slots[1]->out; - channel8->out[0] = &channel8->slots[0]->out; - channel8->out[1] = &channel8->slots[0]->out; - channel8->out[2] = &channel8->slots[1]->out; - channel8->out[3] = &channel8->slots[1]->out; - for (chnum = 6; chnum < 9; chnum++) - { - chip->channel[chnum].chtype = ch_drum; - } - OPL3_ChannelSetupAlg(channel6); - /*hh*/ - if (chip->rhy & 0x01) - { - OPL3_EnvelopeKeyOn(channel7->slots[0], egk_drum); - } - else - { - OPL3_EnvelopeKeyOff(channel7->slots[0], egk_drum); - } - /*tc*/ - if (chip->rhy & 0x02) - { - OPL3_EnvelopeKeyOn(channel8->slots[1], egk_drum); - } - else - { - OPL3_EnvelopeKeyOff(channel8->slots[1], egk_drum); - } - /*tom*/ - if (chip->rhy & 0x04) - { - OPL3_EnvelopeKeyOn(channel8->slots[0], egk_drum); - } - else - { - OPL3_EnvelopeKeyOff(channel8->slots[0], egk_drum); - } - /*sd*/ - if (chip->rhy & 0x08) - { - OPL3_EnvelopeKeyOn(channel7->slots[1], egk_drum); - } - else - { - OPL3_EnvelopeKeyOff(channel7->slots[1], egk_drum); - } - /*bd*/ - if (chip->rhy & 0x10) - { - OPL3_EnvelopeKeyOn(channel6->slots[0], egk_drum); - OPL3_EnvelopeKeyOn(channel6->slots[1], egk_drum); - } - else - { - OPL3_EnvelopeKeyOff(channel6->slots[0], egk_drum); - OPL3_EnvelopeKeyOff(channel6->slots[1], egk_drum); - } - } - else - { - for (chnum = 6; chnum < 9; chnum++) - { - chip->channel[chnum].chtype = ch_2op; - OPL3_ChannelSetupAlg(&chip->channel[chnum]); - OPL3_EnvelopeKeyOff(chip->channel[chnum].slots[0], egk_drum); - OPL3_EnvelopeKeyOff(chip->channel[chnum].slots[1], egk_drum); - } - } -} - -static void OPL3_ChannelWriteA0(opl3_channel *channel, Bit8u data) -{ - if (channel->chip->newm && channel->chtype == ch_4op2) - { - return; - } - channel->f_num = (channel->f_num & 0x300) | data; - channel->ksv = (channel->block << 1) - | ((channel->f_num >> (0x09 - channel->chip->nts)) & 0x01); - OPL3_EnvelopeUpdateKSL(channel->slots[0]); - OPL3_EnvelopeUpdateKSL(channel->slots[1]); - OPL3_EnvelopeUpdateRate(channel->slots[0]); - OPL3_EnvelopeUpdateRate(channel->slots[1]); - if (channel->chip->newm && channel->chtype == ch_4op) - { - channel->pair->f_num = channel->f_num; - channel->pair->ksv = channel->ksv; - OPL3_EnvelopeUpdateKSL(channel->pair->slots[0]); - OPL3_EnvelopeUpdateKSL(channel->pair->slots[1]); - OPL3_EnvelopeUpdateRate(channel->pair->slots[0]); - OPL3_EnvelopeUpdateRate(channel->pair->slots[1]); - } -} - -static void OPL3_ChannelWriteB0(opl3_channel *channel, Bit8u data) -{ - if (channel->chip->newm && channel->chtype == ch_4op2) - { - return; - } - channel->f_num = (channel->f_num & 0xff) | ((data & 0x03) << 8); - channel->block = (data >> 2) & 0x07; - channel->ksv = (channel->block << 1) - | ((channel->f_num >> (0x09 - channel->chip->nts)) & 0x01); - OPL3_EnvelopeUpdateKSL(channel->slots[0]); - OPL3_EnvelopeUpdateKSL(channel->slots[1]); - OPL3_EnvelopeUpdateRate(channel->slots[0]); - OPL3_EnvelopeUpdateRate(channel->slots[1]); - if (channel->chip->newm && channel->chtype == ch_4op) - { - channel->pair->f_num = channel->f_num; - channel->pair->block = channel->block; - channel->pair->ksv = channel->ksv; - OPL3_EnvelopeUpdateKSL(channel->pair->slots[0]); - OPL3_EnvelopeUpdateKSL(channel->pair->slots[1]); - OPL3_EnvelopeUpdateRate(channel->pair->slots[0]); - OPL3_EnvelopeUpdateRate(channel->pair->slots[1]); - } -} - -static void OPL3_ChannelSetupAlg(opl3_channel *channel) -{ - if (channel->chtype == ch_drum) - { - switch (channel->alg & 0x01) - { - case 0x00: - channel->slots[0]->mod = &channel->slots[0]->fbmod; - channel->slots[1]->mod = &channel->slots[0]->out; - break; - case 0x01: - channel->slots[0]->mod = &channel->slots[0]->fbmod; - channel->slots[1]->mod = &channel->chip->zeromod; - break; - } - return; - } - if (channel->alg & 0x08) - { - return; - } - if (channel->alg & 0x04) - { - channel->pair->out[0] = &channel->chip->zeromod; - channel->pair->out[1] = &channel->chip->zeromod; - channel->pair->out[2] = &channel->chip->zeromod; - channel->pair->out[3] = &channel->chip->zeromod; - switch (channel->alg & 0x03) - { - case 0x00: - channel->pair->slots[0]->mod = &channel->pair->slots[0]->fbmod; - channel->pair->slots[1]->mod = &channel->pair->slots[0]->out; - channel->slots[0]->mod = &channel->pair->slots[1]->out; - channel->slots[1]->mod = &channel->slots[0]->out; - channel->out[0] = &channel->slots[1]->out; - channel->out[1] = &channel->chip->zeromod; - channel->out[2] = &channel->chip->zeromod; - channel->out[3] = &channel->chip->zeromod; - break; - case 0x01: - channel->pair->slots[0]->mod = &channel->pair->slots[0]->fbmod; - channel->pair->slots[1]->mod = &channel->pair->slots[0]->out; - channel->slots[0]->mod = &channel->chip->zeromod; - channel->slots[1]->mod = &channel->slots[0]->out; - channel->out[0] = &channel->pair->slots[1]->out; - channel->out[1] = &channel->slots[1]->out; - channel->out[2] = &channel->chip->zeromod; - channel->out[3] = &channel->chip->zeromod; - break; - case 0x02: - channel->pair->slots[0]->mod = &channel->pair->slots[0]->fbmod; - channel->pair->slots[1]->mod = &channel->chip->zeromod; - channel->slots[0]->mod = &channel->pair->slots[1]->out; - channel->slots[1]->mod = &channel->slots[0]->out; - channel->out[0] = &channel->pair->slots[0]->out; - channel->out[1] = &channel->slots[1]->out; - channel->out[2] = &channel->chip->zeromod; - channel->out[3] = &channel->chip->zeromod; - break; - case 0x03: - channel->pair->slots[0]->mod = &channel->pair->slots[0]->fbmod; - channel->pair->slots[1]->mod = &channel->chip->zeromod; - channel->slots[0]->mod = &channel->pair->slots[1]->out; - channel->slots[1]->mod = &channel->chip->zeromod; - channel->out[0] = &channel->pair->slots[0]->out; - channel->out[1] = &channel->slots[0]->out; - channel->out[2] = &channel->slots[1]->out; - channel->out[3] = &channel->chip->zeromod; - break; - } - } - else - { - switch (channel->alg & 0x01) - { - case 0x00: - channel->slots[0]->mod = &channel->slots[0]->fbmod; - channel->slots[1]->mod = &channel->slots[0]->out; - channel->out[0] = &channel->slots[1]->out; - channel->out[1] = &channel->chip->zeromod; - channel->out[2] = &channel->chip->zeromod; - channel->out[3] = &channel->chip->zeromod; - break; - case 0x01: - channel->slots[0]->mod = &channel->slots[0]->fbmod; - channel->slots[1]->mod = &channel->chip->zeromod; - channel->out[0] = &channel->slots[0]->out; - channel->out[1] = &channel->slots[1]->out; - channel->out[2] = &channel->chip->zeromod; - channel->out[3] = &channel->chip->zeromod; - break; - } - } -} - -static void OPL3_ChannelWriteC0(opl3_channel *channel, Bit8u data) -{ - channel->fb = (data & 0x0e) >> 1; - channel->con = data & 0x01; - channel->alg = channel->con; - if (channel->chip->newm) - { - if (channel->chtype == ch_4op) - { - channel->pair->alg = 0x04 | (channel->con << 1) | (channel->pair->con); - channel->alg = 0x08; - OPL3_ChannelSetupAlg(channel->pair); - } - else if (channel->chtype == ch_4op2) - { - channel->alg = 0x04 | (channel->pair->con << 1) | (channel->con); - channel->pair->alg = 0x08; - OPL3_ChannelSetupAlg(channel); - } - else - { - OPL3_ChannelSetupAlg(channel); - } - } - else - { - OPL3_ChannelSetupAlg(channel); - } - if (channel->chip->newm) - { - channel->cha = ((data >> 4) & 0x01) ? ~0 : 0; - channel->chb = ((data >> 5) & 0x01) ? ~0 : 0; - } - else - { - channel->cha = channel->chb = ~0; - } -} - -static void OPL3_ChannelKeyOn(opl3_channel *channel) -{ - if (channel->chip->newm) - { - if (channel->chtype == ch_4op) - { - OPL3_EnvelopeKeyOn(channel->slots[0], egk_norm); - OPL3_EnvelopeKeyOn(channel->slots[1], egk_norm); - OPL3_EnvelopeKeyOn(channel->pair->slots[0], egk_norm); - OPL3_EnvelopeKeyOn(channel->pair->slots[1], egk_norm); - } - else if (channel->chtype == ch_2op || channel->chtype == ch_drum) - { - OPL3_EnvelopeKeyOn(channel->slots[0], egk_norm); - OPL3_EnvelopeKeyOn(channel->slots[1], egk_norm); - } - } - else - { - OPL3_EnvelopeKeyOn(channel->slots[0], egk_norm); - OPL3_EnvelopeKeyOn(channel->slots[1], egk_norm); - } -} - -static void OPL3_ChannelKeyOff(opl3_channel *channel) -{ - if (channel->chip->newm) - { - if (channel->chtype == ch_4op) - { - OPL3_EnvelopeKeyOff(channel->slots[0], egk_norm); - OPL3_EnvelopeKeyOff(channel->slots[1], egk_norm); - OPL3_EnvelopeKeyOff(channel->pair->slots[0], egk_norm); - OPL3_EnvelopeKeyOff(channel->pair->slots[1], egk_norm); - } - else if (channel->chtype == ch_2op || channel->chtype == ch_drum) - { - OPL3_EnvelopeKeyOff(channel->slots[0], egk_norm); - OPL3_EnvelopeKeyOff(channel->slots[1], egk_norm); - } - } - else - { - OPL3_EnvelopeKeyOff(channel->slots[0], egk_norm); - OPL3_EnvelopeKeyOff(channel->slots[1], egk_norm); - } -} - -static void OPL3_ChannelSet4Op(opl3_chip *chip, Bit8u data) -{ - Bit8u bit; - Bit8u chnum; - for (bit = 0; bit < 6; bit++) - { - chnum = bit; - if (bit >= 3) - { - chnum += 9 - 3; - } - if ((data >> bit) & 0x01) - { - chip->channel[chnum].chtype = ch_4op; - chip->channel[chnum + 3].chtype = ch_4op2; - } - else - { - chip->channel[chnum].chtype = ch_2op; - chip->channel[chnum + 3].chtype = ch_2op; - } - } -} - -static Bit16s OPL3_ClipSample(Bit32s sample) -{ - if (sample > 32767) - { - sample = 32767; - } - else if (sample < -32768) - { - sample = -32768; - } - return (Bit16s)sample; -} - -static void OPL3_GenerateRhythm1(opl3_chip *chip) -{ - opl3_channel *channel6; - opl3_channel *channel7; - opl3_channel *channel8; - Bit16u phase14; - Bit16u phase17; - Bit16u phase; - Bit16u phasebit; - - channel6 = &chip->channel[6]; - channel7 = &chip->channel[7]; - channel8 = &chip->channel[8]; - OPL3_SlotGenerate(channel6->slots[0]); - phase14 = (channel7->slots[0]->pg_phase >> 9) & 0x3ff; - phase17 = (channel8->slots[1]->pg_phase >> 9) & 0x3ff; - phase = 0x00; - /*hh tc phase bit*/ - phasebit = ((phase14 & 0x08) | (((phase14 >> 5) ^ phase14) & 0x04) - | (((phase17 >> 2) ^ phase17) & 0x08)) ? 0x01 : 0x00; - /*hh*/ - phase = (phasebit << 9) - | (0x34 << ((phasebit ^ (chip->noise & 0x01)) << 1)); - OPL3_SlotGeneratePhase(channel7->slots[0], phase); - /*tt*/ - OPL3_SlotGenerateZM(channel8->slots[0]); -} - -static void OPL3_GenerateRhythm2(opl3_chip *chip) -{ - opl3_channel *channel6; - opl3_channel *channel7; - opl3_channel *channel8; - Bit16u phase14; - Bit16u phase17; - Bit16u phase; - Bit16u phasebit; - - channel6 = &chip->channel[6]; - channel7 = &chip->channel[7]; - channel8 = &chip->channel[8]; - OPL3_SlotGenerate(channel6->slots[1]); - phase14 = (channel7->slots[0]->pg_phase >> 9) & 0x3ff; - phase17 = (channel8->slots[1]->pg_phase >> 9) & 0x3ff; - phase = 0x00; - /*hh tc phase bit*/ - phasebit = ((phase14 & 0x08) | (((phase14 >> 5) ^ phase14) & 0x04) - | (((phase17 >> 2) ^ phase17) & 0x08)) ? 0x01 : 0x00; - /*sd*/ - phase = (0x100 << ((phase14 >> 8) & 0x01)) ^ ((chip->noise & 0x01) << 8); - OPL3_SlotGeneratePhase(channel7->slots[1], phase); - /*tc*/ - phase = 0x100 | (phasebit << 9); - OPL3_SlotGeneratePhase(channel8->slots[1], phase); -} - -void OPL3_Generate(opl3_chip *chip, Bit16s *buf) -{ - Bit8u ii; - Bit8u jj; - Bit16s accm; - - buf[1] = OPL3_ClipSample(chip->mixbuff[1]); - - for (ii = 0; ii < 12; ii++) - { - OPL3_SlotCalcFB(&chip->chipslot[ii]); - OPL3_PhaseGenerate(&chip->chipslot[ii]); - OPL3_EnvelopeCalc(&chip->chipslot[ii]); - OPL3_SlotGenerate(&chip->chipslot[ii]); - } - - for (ii = 12; ii < 15; ii++) - { - OPL3_SlotCalcFB(&chip->chipslot[ii]); - OPL3_PhaseGenerate(&chip->chipslot[ii]); - OPL3_EnvelopeCalc(&chip->chipslot[ii]); - } - - if (chip->rhy & 0x20) - { - OPL3_GenerateRhythm1(chip); - } - else - { - OPL3_SlotGenerate(&chip->chipslot[12]); - OPL3_SlotGenerate(&chip->chipslot[13]); - OPL3_SlotGenerate(&chip->chipslot[14]); - } - - chip->mixbuff[0] = 0; - for (ii = 0; ii < 18; ii++) - { - accm = 0; - for (jj = 0; jj < 4; jj++) - { - accm += *chip->channel[ii].out[jj]; - } - chip->mixbuff[0] += (Bit16s)(accm & chip->channel[ii].cha); - } - - for (ii = 15; ii < 18; ii++) - { - OPL3_SlotCalcFB(&chip->chipslot[ii]); - OPL3_PhaseGenerate(&chip->chipslot[ii]); - OPL3_EnvelopeCalc(&chip->chipslot[ii]); - } - - if (chip->rhy & 0x20) - { - OPL3_GenerateRhythm2(chip); - } - else - { - OPL3_SlotGenerate(&chip->chipslot[15]); - OPL3_SlotGenerate(&chip->chipslot[16]); - OPL3_SlotGenerate(&chip->chipslot[17]); - } - - buf[0] = OPL3_ClipSample(chip->mixbuff[0]); - - for (ii = 18; ii < 33; ii++) - { - OPL3_SlotCalcFB(&chip->chipslot[ii]); - OPL3_PhaseGenerate(&chip->chipslot[ii]); - OPL3_EnvelopeCalc(&chip->chipslot[ii]); - OPL3_SlotGenerate(&chip->chipslot[ii]); - } - - chip->mixbuff[1] = 0; - for (ii = 0; ii < 18; ii++) - { - accm = 0; - for (jj = 0; jj < 4; jj++) - { - accm += *chip->channel[ii].out[jj]; - } - chip->mixbuff[1] += (Bit16s)(accm & chip->channel[ii].chb); - } - - for (ii = 33; ii < 36; ii++) - { - OPL3_SlotCalcFB(&chip->chipslot[ii]); - OPL3_PhaseGenerate(&chip->chipslot[ii]); - OPL3_EnvelopeCalc(&chip->chipslot[ii]); - OPL3_SlotGenerate(&chip->chipslot[ii]); - } - - OPL3_NoiseGenerate(chip); - - if ((chip->timer & 0x3f) == 0x3f) - { - chip->tremolopos = (chip->tremolopos + 1) % 210; - } - if (chip->tremolopos < 105) - { - chip->tremolo = chip->tremolopos >> chip->tremoloshift; - } - else - { - chip->tremolo = (210 - chip->tremolopos) >> chip->tremoloshift; - } - - if ((chip->timer & 0x3ff) == 0x3ff) - { - chip->vibpos = (chip->vibpos + 1) & 7; - } - - chip->timer++; - - while (chip->writebuf[chip->writebuf_cur].time <= chip->writebuf_samplecnt) - { - if (!(chip->writebuf[chip->writebuf_cur].reg & 0x200)) - { - break; - } - chip->writebuf[chip->writebuf_cur].reg &= 0x1ff; - OPL3_WriteReg(chip, chip->writebuf[chip->writebuf_cur].reg, - chip->writebuf[chip->writebuf_cur].data); - chip->writebuf_cur = (chip->writebuf_cur + 1) % OPL_WRITEBUF_SIZE; - } - chip->writebuf_samplecnt++; -} - -void OPL3_GenerateResampled(opl3_chip *chip, Bit16s *buf) -{ - while (chip->samplecnt >= chip->rateratio) - { - chip->oldsamples[0] = chip->samples[0]; - chip->oldsamples[1] = chip->samples[1]; - OPL3_Generate(chip, chip->samples); - chip->samplecnt -= chip->rateratio; - } - buf[0] = (Bit16s)((chip->oldsamples[0] * (chip->rateratio - chip->samplecnt) - + chip->samples[0] * chip->samplecnt) / chip->rateratio); - buf[1] = (Bit16s)((chip->oldsamples[1] * (chip->rateratio - chip->samplecnt) - + chip->samples[1] * chip->samplecnt) / chip->rateratio); - chip->samplecnt += 1 << RSM_FRAC; -} - -void OPL3_Reset(opl3_chip *chip, Bit32u samplerate) -{ - Bit8u slotnum; - Bit8u channum; - - memset(chip, 0, sizeof(opl3_chip)); - for (slotnum = 0; slotnum < 36; slotnum++) - { - chip->chipslot[slotnum].chip = chip; - chip->chipslot[slotnum].mod = &chip->zeromod; - chip->chipslot[slotnum].eg_rout = 0x1ff; - chip->chipslot[slotnum].eg_out = 0x1ff << 3; - chip->chipslot[slotnum].eg_gen = envelope_gen_num_off; - chip->chipslot[slotnum].trem = (Bit8u*)&chip->zeromod; - chip->chipslot[slotnum].signpos = (31-9); /* for wf=0 need use sigext of (phase & 0x200) */ - } - for (channum = 0; channum < 18; channum++) - { - chip->channel[channum].slots[0] = &chip->chipslot[ch_slot[channum]]; - chip->channel[channum].slots[1] = &chip->chipslot[ch_slot[channum] + 3]; - chip->chipslot[ch_slot[channum]].channel = &chip->channel[channum]; - chip->chipslot[ch_slot[channum] + 3].channel = &chip->channel[channum]; - if ((channum % 9) < 3) - { - chip->channel[channum].pair = &chip->channel[channum + 3]; - } - else if ((channum % 9) < 6) - { - chip->channel[channum].pair = &chip->channel[channum - 3]; - } - chip->channel[channum].chip = chip; - chip->channel[channum].out[0] = &chip->zeromod; - chip->channel[channum].out[1] = &chip->zeromod; - chip->channel[channum].out[2] = &chip->zeromod; - chip->channel[channum].out[3] = &chip->zeromod; - chip->channel[channum].chtype = ch_2op; - chip->channel[channum].cha = ~0; - chip->channel[channum].chb = ~0; - OPL3_ChannelSetupAlg(&chip->channel[channum]); - } - chip->noise = 0x306600; - chip->rateratio = (samplerate << RSM_FRAC) / 49716; - chip->tremoloshift = 4; - chip->vibshift = 1; -} - -void OPL3_WriteReg(opl3_chip *chip, Bit16u reg, Bit8u v) -{ - Bit8u high = (reg >> 8) & 0x01; - Bit8u regm = reg & 0xff; - switch (regm & 0xf0) - { - case 0x00: - if (high) - { - switch (regm & 0x0f) - { - case 0x04: - OPL3_ChannelSet4Op(chip, v); - break; - case 0x05: - chip->newm = v & 0x01; - break; - } - } - else - { - switch (regm & 0x0f) - { - case 0x08: - chip->nts = (v >> 6) & 0x01; - break; - } - } - break; - case 0x20: - case 0x30: - if (ad_slot[regm & 0x1f] >= 0) - { - OPL3_SlotWrite20(&chip->chipslot[18 * high + ad_slot[regm & 0x1f]], v); - } - break; - case 0x40: - case 0x50: - if (ad_slot[regm & 0x1f] >= 0) - { - OPL3_SlotWrite40(&chip->chipslot[18 * high + ad_slot[regm & 0x1f]], v); - } - break; - case 0x60: - case 0x70: - if (ad_slot[regm & 0x1f] >= 0) - { - OPL3_SlotWrite60(&chip->chipslot[18 * high + ad_slot[regm & 0x1f]], v); - } - break; - case 0x80: - case 0x90: - if (ad_slot[regm & 0x1f] >= 0) - { - OPL3_SlotWrite80(&chip->chipslot[18 * high + ad_slot[regm & 0x1f]], v); - } - break; - case 0xe0: - case 0xf0: - if (ad_slot[regm & 0x1f] >= 0) - { - OPL3_SlotWriteE0(&chip->chipslot[18 * high + ad_slot[regm & 0x1f]], v); - } - break; - case 0xa0: - if ((regm & 0x0f) < 9) - { - OPL3_ChannelWriteA0(&chip->channel[9 * high + (regm & 0x0f)], v); - } - break; - case 0xb0: - if (regm == 0xbd && !high) - { - chip->tremoloshift = (((v >> 7) ^ 1) << 1) + 2; - chip->vibshift = ((v >> 6) & 0x01) ^ 1; - OPL3_ChannelUpdateRhythm(chip, v); - } - else if ((regm & 0x0f) < 9) - { - OPL3_ChannelWriteB0(&chip->channel[9 * high + (regm & 0x0f)], v); - if (v & 0x20) - { - OPL3_ChannelKeyOn(&chip->channel[9 * high + (regm & 0x0f)]); - } - else - { - OPL3_ChannelKeyOff(&chip->channel[9 * high + (regm & 0x0f)]); - } - } - break; - case 0xc0: - if ((regm & 0x0f) < 9) - { - OPL3_ChannelWriteC0(&chip->channel[9 * high + (regm & 0x0f)], v); - } - break; - } -} - -void OPL3_WriteRegBuffered(opl3_chip *chip, Bit16u reg, Bit8u v) -{ - Bit64u time1, time2; - - if (chip->writebuf[chip->writebuf_last].reg & 0x200) - { - OPL3_WriteReg(chip, chip->writebuf[chip->writebuf_last].reg & 0x1ff, - chip->writebuf[chip->writebuf_last].data); - - chip->writebuf_cur = (chip->writebuf_last + 1) % OPL_WRITEBUF_SIZE; - chip->writebuf_samplecnt = chip->writebuf[chip->writebuf_last].time; - } - - chip->writebuf[chip->writebuf_last].reg = reg | 0x200; - chip->writebuf[chip->writebuf_last].data = v; - time1 = chip->writebuf_lasttime + OPL_WRITEBUF_DELAY; - time2 = chip->writebuf_samplecnt; - - if (time1 < time2) - { - time1 = time2; - } - - chip->writebuf[chip->writebuf_last].time = time1; - chip->writebuf_lasttime = time1; - chip->writebuf_last = (chip->writebuf_last + 1) % OPL_WRITEBUF_SIZE; -} - -void OPL3_GenerateStream(opl3_chip *chip, Bit16s *sndptr, Bit32u numsamples) -{ - Bit32u i; - - for(i = 0; i < numsamples; i++) - { - OPL3_GenerateResampled(chip, sndptr); - sndptr += 2; - } -} - -#define OPL3_MIN(A, B) (((A) > (B)) ? (B) : (A)) -#define OPL3_MAX(A, B) (((A) < (B)) ? (B) : (A)) -#define OPL3_CLAMP(V, MIN, MAX) OPL3_MAX(OPL3_MIN(V, MAX), MIN) - -void OPL3_GenerateStreamMix(opl3_chip *chip, Bit16s *sndptr, Bit32u numsamples) -{ - Bit32u i; - Bit16s sample[2]; - Bit32s mix[2]; - - for(i = 0; i < numsamples; i++) - { - OPL3_GenerateResampled(chip, sample); - mix[0] = sndptr[0] + sample[0]; - mix[1] = sndptr[1] + sample[1]; - sndptr[0] = OPL3_CLAMP(mix[0], INT16_MIN, INT16_MAX); - sndptr[1] = OPL3_CLAMP(mix[1], INT16_MIN, INT16_MAX); - sndptr += 2; - } -} - diff --git a/src/chips/nuked/old/nukedopl3.h b/src/chips/nuked/old/nukedopl3.h deleted file mode 100644 index 254f275..0000000 --- a/src/chips/nuked/old/nukedopl3.h +++ /dev/null @@ -1,154 +0,0 @@ -/* - * Copyright (C) 2013-2016 Alexey Khokholov (Nuke.YKT) - * - * This library 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. - * - * This library 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - * 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. - * - * version: 1.7.4 - */ - -#ifndef OPL_OPL3_H -#define OPL_OPL3_H - -#include <inttypes.h> -#include <stdint.h> - -#ifdef __cplusplus -extern "C" { -#endif - - -#define OPL_WRITEBUF_SIZE 1024 -#define OPL_WRITEBUF_DELAY 2 - -typedef uintptr_t Bitu; -typedef intptr_t Bits; -typedef uint64_t Bit64u; -typedef int64_t Bit64s; -typedef uint32_t Bit32u; -typedef int32_t Bit32s; -typedef uint16_t Bit16u; -typedef int16_t Bit16s; -typedef uint8_t Bit8u; -typedef int8_t Bit8s; - -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; - Bit16s out; - Bit16s fbmod; - Bit16s *mod; - Bit16s prout; - Bit16s eg_rout; - Bit16s eg_out; - Bit8u eg_inc; - Bit8u eg_gen; - Bit8u eg_rate; - Bit8u eg_ksl; - Bit8u *trem; - Bit8u reg_vib; - Bit8u reg_type; - Bit8u reg_ksr; - Bit8u reg_mult; - Bit8u reg_ksl; - Bit8u reg_tl; - Bit8u reg_ar; - Bit8u reg_dr; - Bit8u reg_sl; - Bit8u reg_rr; - Bit8u reg_wf; - Bit8u key; - Bit32u pg_phase; - Bit32u timer; - - Bit16u maskzero; - Bit8u signpos; - Bit8u phaseshift; -}; - -struct _opl3_channel { - opl3_slot *slots[2]; - opl3_channel *pair; - opl3_chip *chip; - Bit16s *out[4]; - Bit8u chtype; - Bit16u f_num; - Bit8u block; - Bit8u fb; - Bit8u con; - Bit8u alg; - Bit8u ksv; - Bit16u cha, chb; -}; - -typedef struct _opl3_writebuf { - Bit64u time; - Bit16u reg; - Bit8u data; -} opl3_writebuf; - -struct _opl3_chip { - opl3_channel channel[18]; - opl3_slot chipslot[36]; - Bit16u timer; - Bit8u newm; - Bit8u nts; - Bit8u rhy; - Bit8u vibpos; - Bit8u vibshift; - Bit8u tremolo; - Bit8u tremolopos; - Bit8u tremoloshift; - Bit32u noise; - Bit16s zeromod; - Bit32s mixbuff[2]; - /* OPL3L */ - Bit32s rateratio; - Bit32s samplecnt; - Bit16s oldsamples[2]; - Bit16s samples[2]; - - Bit64u writebuf_samplecnt; - Bit32u writebuf_cur; - Bit32u writebuf_last; - Bit64u writebuf_lasttime; - opl3_writebuf writebuf[OPL_WRITEBUF_SIZE]; -}; - -void OPL3_Generate(opl3_chip *chip, Bit16s *buf); -void OPL3_GenerateResampled(opl3_chip *chip, Bit16s *buf); -void OPL3_Reset(opl3_chip *chip, Bit32u samplerate); -void OPL3_WriteReg(opl3_chip *chip, Bit16u reg, Bit8u v); -void OPL3_WriteRegBuffered(opl3_chip *chip, Bit16u reg, Bit8u v); -void OPL3_GenerateStream(opl3_chip *chip, Bit16s *sndptr, Bit32u numsamples); -void OPL3_GenerateStreamMix(opl3_chip *chip, Bit16s *sndptr, Bit32u numsamples); - -#ifdef __cplusplus -} -#endif - -#endif |