mirror of
https://github.com/libretro/scummvm.git
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121 lines
2.7 KiB
C++
121 lines
2.7 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2001-2006 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*/
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#include "common/stdafx.h"
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#include "sound/mpu401.h"
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#include "common/util.h"
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#ifndef DISABLE_TAPWAVE
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#include "TwTraps.h"
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#include "TwMidi.h"
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class MidiDriver_Zodiac:public MidiDriver_MPU401 {
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public:
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MidiDriver_Zodiac();
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int open();
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void close();
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void send(uint32 b);
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void sysEx(const byte *msg, uint16 length);
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private:
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TwMidiHandle _midiHandle;
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Boolean _isOpen;
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Int32 _oldVol;
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};
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MidiDriver_Zodiac::MidiDriver_Zodiac() {
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_isOpen = false;
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_midiHandle = 0;
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}
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int MidiDriver_Zodiac::open() {
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Err e;
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if (e = TwMidiOpen(&_midiHandle))
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return MERR_DEVICE_NOT_AVAILABLE;
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TwMidiGetMasterVolume(&_oldVol);
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TwMidiSetMasterVolume(twMidiMaxVolume); // TODO : set volume based on gVars
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_isOpen = true;
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return 0;
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}
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void MidiDriver_Zodiac::close() {
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if (_isOpen) {
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_isOpen = false;
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MidiDriver_MPU401::close();
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TwMidiSetMasterVolume(_oldVol);
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TwMidiClose(_midiHandle);
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}
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}
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void MidiDriver_Zodiac::send(uint32 b) {
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if (!_isOpen)
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return;
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UInt8 midiCmd[4];
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UInt8 chanID,mdCmd;
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midiCmd[3] = (b & 0xFF000000) >> 24;
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midiCmd[2] = (b & 0x00FF0000) >> 16;
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midiCmd[1] = (b & 0x0000FF00) >> 8;
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midiCmd[0] = (b & 0x000000FF);
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chanID = (midiCmd[0] & 0x0F) ;
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mdCmd = midiCmd[0] & 0xF0;
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switch (mdCmd) {
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case 0x80: // note off
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TwMidiNoteOff(_midiHandle, chanID, midiCmd[1], 0);
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break;
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case 0x90: // note on
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TwMidiNoteOn(_midiHandle, chanID, midiCmd[1], midiCmd[2]);
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break;
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case 0xB0: // control change
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TwMidiControlChange(_midiHandle, chanID, midiCmd[1], midiCmd[2]);
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break;
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case 0xC0: // progam change
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TwMidiProgramChange(_midiHandle, chanID, midiCmd[1]);
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break;
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case 0xE0: // pitchBend
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TwMidiPitchBend(_midiHandle, chanID, (short)(midiCmd[1] | (midiCmd[2] << 8)));
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break;
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}
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}
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void MidiDriver_Zodiac::sysEx(const byte *msg, uint16 length) {
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TwMidiSysEx(_midiHandle, 0, (byte *)msg, length);
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}
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MidiDriver *MidiDriver_Zodiac_create() {
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return new MidiDriver_Zodiac();
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}
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#endif
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