/* ScummVM - Graphic Adventure Engine * * ScummVM is the legal property of its developers, whose names * are too numerous to list here. Please refer to the COPYRIGHT * file distributed with this source distribution. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program 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 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. * */ #include "audio/fmopl.h" #include "audio/softsynth/opl/dosbox.h" #include "audio/softsynth/opl/mame.h" #include "common/config-manager.h" #include "common/textconsole.h" #include "common/translation.h" namespace OPL { // Config implementation enum OplEmulator { kAuto = 0, kMame = 1, kDOSBox = 2 }; OPL::OPL() { if (_hasInstance) error("There are multiple OPL output instances running"); _hasInstance = true; } const Config::EmulatorDescription Config::_drivers[] = { { "auto", "<default>", kAuto, kFlagOpl2 | kFlagDualOpl2 | kFlagOpl3 }, { "mame", _s("MAME OPL emulator"), kMame, kFlagOpl2 }, #ifndef DISABLE_DOSBOX_OPL { "db", _s("DOSBox OPL emulator"), kDOSBox, kFlagOpl2 | kFlagDualOpl2 | kFlagOpl3 }, #endif { 0, 0, 0, 0 } }; Config::DriverId Config::parse(const Common::String &name) { for (int i = 0; _drivers[i].name; ++i) { if (name.equalsIgnoreCase(_drivers[i].name)) return _drivers[i].id; } return -1; } Config::DriverId Config::detect(OplType type) { uint32 flags = 0; switch (type) { case kOpl2: flags = kFlagOpl2; break; case kDualOpl2: flags = kFlagDualOpl2; break; case kOpl3: flags = kFlagOpl3; break; } DriverId drv = parse(ConfMan.get("opl_driver")); // When a valid driver is selected, check whether it supports // the requested OPL chip. if (drv != -1 && drv != kAuto) { // If the chip is supported, just use the driver. if ((flags & _drivers[drv].flags)) { return drv; } else { // Else we will output a warning and just // return that no valid driver is found. warning("Your selected OPL driver \"%s\" does not support type %d emulation, which is requested by your game", _drivers[drv].description, type); return -1; } } // Detect the first matching emulator drv = -1; for (int i = 1; _drivers[i].name; ++i) { if (_drivers[i].flags & flags) { drv = _drivers[i].id; break; } } return drv; } OPL *Config::create(OplType type) { return create(kAuto, type); } OPL *Config::create(DriverId driver, OplType type) { // On invalid driver selection, we try to do some fallback detection if (driver == -1) { warning("Invalid OPL driver selected, trying to detect a fallback emulator"); driver = kAuto; } // If autodetection is selected, we search for a matching // driver. if (driver == kAuto) { driver = detect(type); // No emulator for the specified OPL chip could // be found, thus stop here. if (driver == -1) { warning("No OPL emulator available for type %d", type); return 0; } } switch (driver) { case kMame: if (type == kOpl2) return new MAME::OPL(); else warning("MAME OPL emulator only supports OPL2 emulation"); return 0; #ifndef DISABLE_DOSBOX_OPL case kDOSBox: return new DOSBox::OPL(type); #endif default: warning("Unsupported OPL emulator %d", driver); // TODO: Maybe we should add some dummy emulator too, which just outputs // silence as sound? return 0; } } bool OPL::_hasInstance = false; } // End of namespace OPL void OPLDestroy(FM_OPL *OPL) { delete OPL; } void OPLResetChip(FM_OPL *OPL) { OPL->reset(); } void OPLWrite(FM_OPL *OPL, int a, int v) { OPL->write(a, v); } unsigned char OPLRead(FM_OPL *OPL, int a) { return OPL->read(a); } void OPLWriteReg(FM_OPL *OPL, int r, int v) { OPL->writeReg(r, v); } void YM3812UpdateOne(FM_OPL *OPL, int16 *buffer, int length) { OPL->readBuffer(buffer, length); } FM_OPL *makeAdLibOPL(int rate) { FM_OPL *opl = OPL::Config::create(); if (opl) { if (!opl->init(rate)) { delete opl; opl = 0; } } return opl; }