aboutsummaryrefslogtreecommitdiff
path: root/engines/agos/midi.h
blob: 9c8303ba3cf0dce431ec29523e30a5ea22f2c3f0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
/* 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 AGOS_MIDI_H
#define AGOS_MIDI_H

#include "audio/mididrv.h"
#include "audio/midiparser.h"
#include "common/mutex.h"

namespace Common {
	class File;
}

namespace AGOS {

struct MusicInfo {
	MidiParser *parser;
	byte *data;
	byte num_songs;           // For Type 1 SMF resources
	byte *songs[16];          // For Type 1 SMF resources
	uint32 song_sizes[16];    // For Type 1 SMF resources

	MidiChannel *channel[16]; // Dynamic remapping of channels to resolve conflicts
	byte volume[16];          // Current channel volume

	MusicInfo() { clear(); }
	void clear() {
		parser = 0; data = 0; num_songs = 0;
		memset(songs, 0, sizeof(songs));
		memset(song_sizes, 0, sizeof(song_sizes));
		memset(channel, 0, sizeof(channel));
	}
};

class MidiPlayer : public MidiDriver {
protected:
	Common::Mutex _mutex;
	MidiDriver *_driver;
	bool _map_mt32_to_gm;
	bool _passThrough;
	bool _nativeMT32;

	MusicInfo _music;
	MusicInfo _sfx;
	MusicInfo *_current; // Allows us to establish current context for operations.

	// These are maintained for both music and SFX
	byte _masterVolume;    // 0-255
	byte _musicVolume;
	byte _sfxVolume;
	bool _paused;

	// These are only used for music.
	byte _currentTrack;
	bool _loopTrack;
	byte _queuedTrack;
	bool _loopQueuedTrack;

protected:
	static void onTimer(void *data);
	void clearConstructs();
	void clearConstructs(MusicInfo &info);
	void resetVolumeTable();

public:
	bool _enable_sfx;

public:
	MidiPlayer();
	virtual ~MidiPlayer();

	void loadSMF(Common::File *in, int song, bool sfx = false);
	void loadMultipleSMF(Common::File *in, bool sfx = false);
	void loadXMIDI(Common::File *in, bool sfx = false);
	void loadS1D(Common::File *in, bool sfx = false);

	void mapMT32toGM(bool map);
	void setNativeMT32(bool nativeMT32) { _nativeMT32 = nativeMT32; }
	void setLoop(bool loop);
	void startTrack(int track);
	void queueTrack(int track, bool loop);
	bool isPlaying(bool check_queued = false) { return (_currentTrack != 255 && (_queuedTrack != 255 || !check_queued)); }

	void stop();
	void pause(bool b);

	int  getMusicVolume() { return _musicVolume; }
	int  getSFXVolume() { return _sfxVolume; }
	void setVolume(int musicVol, int sfxVol);
	void setDriver(MidiDriver *md);

public:
	// MidiDriver interface implementation
	int open();
	void close();
	void send(uint32 b);

	void metaEvent(byte type, byte *data, uint16 length);
	void setPassThrough(bool b)		{ _passThrough = b; }

	// Timing functions - MidiDriver now operates timers
	void setTimerCallback(void *timer_param, void (*timer_proc) (void *)) { }
	uint32 getBaseTempo() { return _driver ? _driver->getBaseTempo() : 0; }

	// Channel allocation functions
	MidiChannel *allocateChannel() { return 0; }
	MidiChannel *getPercussionChannel() { return 0; }
};

} // End of namespace AGOS

#endif