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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001-2006 The ScummVM project
*
* 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 "common/stdafx.h"
#include "sound/mpu401.h"
#include "common/util.h"
#ifndef DISABLE_TAPWAVE
#include "TwTraps.h"
#include "TwMidi.h"
class MidiDriver_Zodiac:public MidiDriver_MPU401 {
public:
MidiDriver_Zodiac();
int open();
void close();
void send(uint32 b);
void sysEx(const byte *msg, uint16 length);
private:
TwMidiHandle _midiHandle;
Boolean _isOpen;
Int32 _oldVol;
};
MidiDriver_Zodiac::MidiDriver_Zodiac() {
_isOpen = false;
_midiHandle = 0;
}
int MidiDriver_Zodiac::open() {
Err e;
if (e = TwMidiOpen(&_midiHandle))
return MERR_DEVICE_NOT_AVAILABLE;
TwMidiGetMasterVolume(&_oldVol);
TwMidiSetMasterVolume(twMidiMaxVolume);
_isOpen = true;
return 0;
}
void MidiDriver_Zodiac::close() {
if (_isOpen) {
_isOpen = false;
MidiDriver_MPU401::close();
TwMidiSetMasterVolume(_oldVol);
TwMidiClose(_midiHandle);
}
}
void MidiDriver_Zodiac::send(uint32 b) {
if (!_isOpen)
return;
UInt8 midiCmd[4];
UInt8 chanID,mdCmd;
midiCmd[3] = (b & 0xFF000000) >> 24;
midiCmd[2] = (b & 0x00FF0000) >> 16;
midiCmd[1] = (b & 0x0000FF00) >> 8;
midiCmd[0] = (b & 0x000000FF);
chanID = (midiCmd[0] & 0x0F) ;
mdCmd = midiCmd[0] & 0xF0;
switch (mdCmd) {
case 0x80: // note off
TwMidiNoteOff(_midiHandle, chanID, midiCmd[1], 0);
break;
case 0x90: // note on
TwMidiNoteOn(_midiHandle, chanID, midiCmd[1], midiCmd[2]);
break;
case 0xB0: // control change
TwMidiControlChange(_midiHandle, chanID, midiCmd[1], midiCmd[2]);
break;
case 0xC0: // progam change
TwMidiProgramChange(_midiHandle, chanID, midiCmd[1]);
break;
case 0xE0: // pitchBend
TwMidiPitchBend(_midiHandle, chanID, (short)(midiCmd[1] | (midiCmd[2] << 8)));
break;
}
}
void MidiDriver_Zodiac::sysEx(const byte *msg, uint16 length) {
TwMidiSysEx(_midiHandle, 0, msg, length);
}
MidiDriver *MidiDriver_Zodiac_create() {
return new MidiDriver_Zodiac();
}
#endif
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