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/* 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.
*
* $URL$
* $Id$
*
*/
#ifndef SCI_SFX_MIDI_H
#define SCI_SFX_MIDI_H
#include "sound/mididrv.h"
#include "sound/softsynth/emumidi.h"
#include "common/error.h"
namespace Sci {
class ResourceManager;
enum {
MIDI_CHANNELS = 16
};
#define MIDI_RHYTHM_CHANNEL 9
/* Special SCI sound stuff */
#define SCI_MIDI_TIME_EXPANSION_PREFIX 0xF8
#define SCI_MIDI_TIME_EXPANSION_LENGTH 240
#define SCI_MIDI_EOT 0xFC
#define SCI_MIDI_SET_SIGNAL 0xCF
#define SCI_MIDI_SET_POLYPHONY 0x4B
#define SCI_MIDI_RESET_ON_SUSPEND 0x4C
#define SCI_MIDI_CHANNEL_MUTE 0x4E
#define SCI_MIDI_SET_REVERB 0x50
#define SCI_MIDI_HOLD 0x52
#define SCI_MIDI_CUMULATIVE_CUE 0x60
#define SCI_MIDI_CHANNEL_SOUND_OFF 0x78 /* all-sound-off for Bn */
#define SCI_MIDI_CHANNEL_NOTES_OFF 0x7B /* all-notes-off for Bn */
#define SCI_MIDI_SET_SIGNAL_LOOP 0x7F
/* If this is the parameter of 0xCF, the loop point is set here */
#define SCI_MIDI_CONTROLLER(status) ((status & 0xF0) == 0xB0)
class MidiPlayer : public MidiDriver {
protected:
MidiDriver *_driver;
public:
int open() { return open(NULL); }
virtual int open(ResourceManager *resMan) { return _driver->open(); }
virtual void close() { _driver->close(); }
virtual void send(uint32 b) { _driver->send(b); }
uint32 getBaseTempo() { return _driver->getBaseTempo(); }
virtual bool hasRhythmChannel() const = 0;
MidiChannel *allocateChannel() { return _driver->allocateChannel(); }
MidiChannel *getPercussionChannel() { return _driver->getPercussionChannel(); }
void setTimerCallback(void *timer_param, Common::TimerManager::TimerProc timer_proc) { _driver->setTimerCallback(timer_param, timer_proc); }
virtual int getPlayMask() const = 0;
virtual int getPolyphony() const = 0;
virtual void setVolume(byte volume) {
// Master Volume SysEx message
const byte message[] = {0x7f, 0x7f, 0x04, 0x01, (volume * 127 / 15) & 0x7f, (volume * 127 / 15) & 0x7f};
_driver->sysEx(message, 6);
}
virtual void playSwitch(bool play) {
if (!play) {
// Send "All Sound Off" on all channels
for (int i = 0; i < MIDI_CHANNELS; ++i)
_driver->send(0xb0 + i, SCI_MIDI_CHANNEL_NOTES_OFF, 0);
}
}
};
} // End of namespace Sci
#endif // SCI_SFX_MIDI_H
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