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/* ScummVM - Scumm Interpreter
* Copyright (C) 2003 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#include "sky/gmmusic.h"
void SkyGmMusic::passTimerFunc(void *param) {
((SkyGmMusic*)param)->timerCall();
}
SkyGmMusic::SkyGmMusic(MidiDriver *pMidiDrv, SkyDisk *pSkyDisk)
: SkyMusicBase(pSkyDisk) {
_driverFileBase = 60200;
_midiDrv = pMidiDrv;
int midiRes = _midiDrv->open();
if (midiRes != 0) {
printf("Error code: %d\n",midiRes);
}
_midiDrv->setTimerCallback(this, passTimerFunc);
ignoreNextPoll = false;
}
SkyGmMusic::~SkyGmMusic(void) {
_midiDrv->close();
_midiDrv->setTimerCallback(NULL, NULL);
delete _midiDrv;
}
void SkyGmMusic::timerCall(void) {
// midi driver polls hundred times per sec. We only want 50 times.
ignoreNextPoll = !ignoreNextPoll;
if (!ignoreNextPoll) return;
if (_musicData != NULL)
pollMusic();
}
void SkyGmMusic::setupPointers(void) {
_musicDataLoc = (_musicData[0x7DD] << 8) | _musicData[0x7DC];
_sysExSequence = ((_musicData[0x7E1] << 8) | _musicData[0x7E0]) + _musicData;
}
void SkyGmMusic::setupChannels(uint8 *channelData) {
_numberOfChannels = channelData[0];
channelData++;
for (uint8 cnt = 0; cnt < _numberOfChannels; cnt++) {
uint16 chDataStart = ((channelData[(cnt << 1) | 1] << 8) | channelData[cnt << 1]) + _musicDataLoc;
_channels[cnt] = new SkyGmChannel(_musicData, chDataStart, _midiDrv);
}
}
void SkyGmMusic::startDriver(void) {
_midiDrv->send(0xFF);
}
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