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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 SIMON_MIDI_H
#define SIMON_MIDI_H
class MidiDriver;
class MidiStreamer;
class File;
struct MidiEvent;
class MidiPlayer {
public:
MidiPlayer();
void read_all_songs (File *in, uint music);
void read_all_songs_old (File *in, uint music);
void initialize();
void shutdown();
void play();
void pause (bool b);
int get_volume();
void set_volume (int volume);
void set_driver (MidiDriver *md);
private:
struct Track {
uint32 a;
uint32 data_size;
uint32 data_cur_size;
byte *data_ptr;
byte *data_cur_ptr;
uint32 delay;
byte last_cmd;
};
struct Song {
uint ppqn;
uint midi_format;
uint num_tracks;
Track *tracks;
};
struct NoteRec {
uint32 delay;
byte cmd;
byte param_1;
byte param_2;
uint cmd_length;
byte *sysex_data;
};
MidiStreamer *_midiDriver;
uint _lastDelay;
Song *_currentSong;
Song _songs[8];
byte _volumeTable[16]; // 0-127
byte _masterVolume; // 0-255
bool _paused;
void read_mthd(File *in, Song *s, bool old, uint music);
void read_one_song(File *in, Song *s, uint music);
static uint32 track_read_gamma(Track *t);
static byte track_read_byte(Track *t);
int fill (MidiEvent *me, int num_event);
bool fill_helper (NoteRec *nr, MidiEvent *me);
void reset_tracks();
void read_next_note(Track *t, NoteRec *nr);
void unload();
static int on_fill(void *param, MidiEvent *ev, int num);
};
#endif
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