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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;
struct MidiEvent;
class MidiPlayer {
public:
void read_all_songs(FILE *in);
void read_all_songs_old(FILE *in);
void initialize();
void shutdown();
void play();
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;
};
MidiDriver *_md;
FILE *_input;
uint _midi_var10, _midi_5;
bool _midi_var9;
byte _midi_var1;
bool _shutting_down;
uint _midi_var8;
uint _midi_var11;
uint32 _midi_tempo;
Track *_midi_tick_track_ptr;
Track *_midi_track_ptr;
int16 _midi_song_id;
int16 _midi_song_id_2;
int16 _midi_var2;
Song *_midi_cur_song_ptr;
uint32 _midi_volume_table[16];
Song _midi_songs[8];
void read_mthd(Song *s, bool old);
void read_from_file(void *dst, uint size);
void read_one_song(Song *s);
byte read_byte_from_file();
uint32 read_uint32_from_file();
uint16 read_uint16_from_file();
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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