2 * Adplug - Replayer for many OPL2/OPL3 audio file formats.
3 * Copyright (C) 1999 - 2007 Simon Peter, <dn.tlp@gmx.net>, et al.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 * opl.h - OPL base class, by Simon Peter <dn.tlp@gmx.net>
29 TYPE_OPL2, TYPE_OPL3, TYPE_DUAL_OPL2
33 : currChip(0), currType(TYPE_OPL2)
41 virtual void write(int reg, int val) = 0; // combined register select + data write
42 virtual void setchip(int n) // select OPL chip
48 virtual int getchip() // returns current OPL chip
53 virtual void init(void) = 0; // reinitialize OPL chip(s)
55 // return this OPL chip's type
61 // Emulation only: fill buffer
62 virtual void update(short *buf, int samples) {}
65 int currChip; // currently selected OPL chip number
66 ChipType currType; // this OPL chip's type