scummvm/engines/touche/midi.h
Gregory Montoir 424e9e362e enabled MIDI volume changes
svn-id: r24627
2006-11-05 13:00:20 +00:00

84 lines
2.0 KiB
C++

/* ScummVM - Scumm Interpreter
* Copyright (C) 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.
*
* $URL$
* $Id$
*
*/
#ifndef TOUCHE_MIDI_H
#define TOUCHE_MIDI_H
#include "common/util.h"
#include "common/mutex.h"
#include "sound/mididrv.h"
class MidiParser;
namespace Common {
class ReadStream;
}
namespace Touche {
class MidiPlayer : public MidiDriver {
public:
enum {
NUM_CHANNELS = 16
};
MidiPlayer(MidiDriver *driver);
~MidiPlayer();
void play(Common::ReadStream &stream, int size, bool loop = false);
void stop();
void updateTimer();
void adjustVolume(int diff);
void setVolume(int volume);
int getVolume() const { return _masterVolume; }
// MidiDriver interface
int open();
void close();
void send(uint32 b);
void metaEvent(byte type, byte *data, uint16 length);
void setTimerCallback(void *timerParam, void (*timerProc)(void *)) { }
uint32 getBaseTempo() { return _driver ? _driver->getBaseTempo() : 0; }
MidiChannel *allocateChannel() { return 0; }
MidiChannel *getPercussionChannel() { return 0; }
private:
static void timerCallback(void *p);
MidiDriver *_driver;
MidiParser *_parser;
uint8 *_midiData;
bool _isLooping;
bool _isPlaying;
int _masterVolume;
MidiChannel *_channelsTable[NUM_CHANNELS];
uint8 _channelsVolume[NUM_CHANNELS];
Common::Mutex _mutex;
};
} // namespace Touche
#endif