diff options
Diffstat (limited to 'audio/softsynth/fmtowns_pc98/towns_midi.cpp')
| -rw-r--r-- | audio/softsynth/fmtowns_pc98/towns_midi.cpp | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/audio/softsynth/fmtowns_pc98/towns_midi.cpp b/audio/softsynth/fmtowns_pc98/towns_midi.cpp new file mode 100644 index 0000000000..c223d44c11 --- /dev/null +++ b/audio/softsynth/fmtowns_pc98/towns_midi.cpp @@ -0,0 +1,239 @@ +/* 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. + * + * $URL: $ + * $Id: $ + */ + +#include "audio/softsynth/fmtowns_pc98/towns_midi.h" +#include "common/textconsole.h" + +class MidiChannel_TOWNS : public MidiChannel { +public: + MidiChannel_TOWNS(MidiDriver_TOWNS *driver); + ~MidiChannel_TOWNS(); + + MidiDriver *device() { return _driver; } + byte getNumber() { return 0; } + void release(); + + void send(uint32 b); + + void noteOff(byte note); + void noteOn(byte note, byte velocity); + void programChange(byte program); + void pitchBend(int16 bend); + void controlChange(byte control, byte value); + void pitchBendFactor(byte value); + void priority(byte value); + + void sysEx_customInstrument(uint32 type, const byte *instr); + +private: + MidiDriver_TOWNS *_driver; +}; + +MidiChannel_TOWNS::MidiChannel_TOWNS(MidiDriver_TOWNS *driver) : MidiChannel(), _driver(driver) { + +} + +MidiChannel_TOWNS::~MidiChannel_TOWNS() { + +} + +void MidiChannel_TOWNS::release() { + +} + +void MidiChannel_TOWNS::send(uint32 b) { + +} + +void MidiChannel_TOWNS::noteOff(byte note) { + +} + +void MidiChannel_TOWNS::noteOn(byte note, byte velocity) { + +} + +void MidiChannel_TOWNS::programChange(byte program) { + +} + +void MidiChannel_TOWNS::pitchBend(int16 bend) { + +} + +void MidiChannel_TOWNS::controlChange(byte control, byte value) { + +} + +void MidiChannel_TOWNS::pitchBendFactor(byte value) { + +} + +void MidiChannel_TOWNS::priority(byte value) { + +} + +void MidiChannel_TOWNS::sysEx_customInstrument(uint32 type, const byte *instr) { + +} + +MidiDriver_TOWNS::MidiDriver_TOWNS(Audio::Mixer *mixer) : _timerBproc(0), _timerBpara(0), _open(false) { + _intf = new TownsAudioInterface(mixer, this); + _channels = new MidiChannel_TOWNS*[16]; + for (int i = 0; i < 16; i++) + _channels[i] = new MidiChannel_TOWNS(this); + + _tickCounter = 0; + _curChan = 0; + //unbuffered write: _intf->callback(17, part, reg, val); + //buffered write: _intf->callback(19, part, reg, val); +} + +MidiDriver_TOWNS::~MidiDriver_TOWNS() { + close(); + delete _intf; + setTimerCallback(0, 0); + + for (int i = 0; i < 16; i++) + delete _channels[i]; + delete[] _channels; +} + +int MidiDriver_TOWNS::open() { + if (_open) + return MERR_ALREADY_OPEN; + + if (!_intf->init()) + return MERR_CANNOT_CONNECT; + + _intf->callback(0); + + _intf->callback(21, 255, 1); + _intf->callback(21, 0, 1); + _intf->callback(22, 255, 221); + + _intf->callback(33, 8); + _intf->setSoundEffectChanMask(~0x3f); + + _open = true; + + return 0; +} + +void MidiDriver_TOWNS::close() { + _open = false; +} + +void MidiDriver_TOWNS::send(uint32 b) { + byte param2 = (b >> 16) & 0xFF; + byte param1 = (b >> 8) & 0xFF; + byte cmd = b & 0xF0; + + /*AdLibPart *part; + if (chan == 9) + part = &_percussion; + else**/ + MidiChannel_TOWNS *c = _channels[b & 0x0F]; + + switch (cmd) { + case 0x80: + //part->noteOff(param1); + break; + case 0x90: + //part->noteOn(param1, param2); + if (param2) + c->noteOn(param1, param2); + else + c->noteOff(param1); + break; + case 0xB0: + // supported: 1, 7, 0x40 + c->controlChange(param1, param2); + break; + case 0xC0: + c->programChange(param1); + break; + case 0xE0: + //part->pitchBend((param1 | (param2 << 7)) - 0x2000); + c->pitchBend((param1 | (param2 << 7)) - 0x2000); + break; + case 0xF0: + warning("MidiDriver_ADLIB: Receiving SysEx command on a send() call"); + break; + + default: + break; + } +} + +void MidiDriver_TOWNS::setTimerCallback(void *timer_param, Common::TimerManager::TimerProc timer_proc) { + _timerBproc = timer_proc; + _timerBpara = timer_param; +} + +uint32 MidiDriver_TOWNS::getBaseTempo() { + return 0; +} + +MidiChannel *MidiDriver_TOWNS::allocateChannel() { + MidiChannel *res = 0; + + for (int i = 0; i < 6; i++) { + if (++_curChan == 6) + _curChan = 0; + + //if (_channels[i]-> //// ) + // return _channels[i]; + + } + + //if (res) + // res->noteOff(); + + return res; +} + +MidiChannel *MidiDriver_TOWNS::getPercussionChannel() { + return 0; +} + +void MidiDriver_TOWNS::timerCallback(int timerId) { + if (!_open) + return; + + switch (timerId) { + case 1: + if (_timerBproc) { + _timerBproc(_timerBpara); + _tickCounter += 10000; + while (_tickCounter >= 4167) { + _tickCounter -= 4167; + //_timerBproc(_timerBpara); + } + } + break; + default: + break; + } +} |