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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001/2002 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.
*
* $Header$
*
*/
#ifndef INCLUDED_MIDISTREAMER
#define INCLUDED_MIDISTREAMER
class MidiStreamer;
#include "mididrv.h"
class MidiStreamer : public MidiDriver {
public:
/* called whenever the midi driver is in streaming mode,
* and more midi commands need to be generated
* return 0 to tell the mididriver that the end of stream was reached
*/
typedef int StreamCallback (void *param, MidiEvent * ev, int num);
private:
MidiDriver *_target;
StreamCallback *_stream_proc;
void *_stream_param;
bool _isOpen;
bool _paused;
MidiEvent _events [64];
int _event_count;
int _event_index;
long _driver_tempo;
long _tempo;
uint16 _ticks_per_beat;
long _delay;
static void timer_thread (void *param);
void on_timer();
public:
MidiStreamer (MidiDriver *target);
int open();
void close();
void send(uint32 b) { if (_isOpen) _target->send (b); }
uint32 property(int prop, uint32 param);
void setPitchBendRange (byte channel, uint range) { _target->setPitchBendRange (channel, range); }
void pause(bool p) { _paused = p; }
void set_stream_callback(void *param, StreamCallback *sc);
void setTimerCallback (void *timer_param, void (*timer_proc) (void *)) { }
uint32 getBaseTempo (void) { return _target->getBaseTempo(); }
MidiChannel *allocateChannel() { return NULL; }
MidiChannel *getPercussionChannel() { return NULL; }
};
#endif
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