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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
/* ScummVM - Scumm Interpreter
* Copyright (C) 2001 Ludvig Strigeus
* Copyright (C) 2001-2003 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 SOUND_MIDIDRV_H
#define SOUND_MIDIDRV_H
#include "common/scummsys.h"
#include "common/timer.h"
class MidiChannel;
class SoundMixer;
namespace Common { class String; }
/** MIDI Driver Types */
enum {
MD_AUTO = 0,
MD_NULL = 1,
MD_WINDOWS = 2,
MD_TIMIDITY = 3,
MD_SEQ = 4,
MD_QTMUSIC = 5,
MD_ETUDE = 6,
MD_COREAUDIO = 7,
MD_MIDIEMU = 8,
MD_ALSA = 9,
MD_ADLIB = 10,
MD_PCSPK = 11,
MD_PCJR = 12,
MD_TOWNS = 13,
MD_YPA1 = 14 // PalmOS
};
/** Convert a string containing a music driver name into MIDI Driver type. */
extern int parseMusicDriver(const Common::String &str);
/**
* Abstract description of a MIDI driver. Used by the config file and command
* line parsing code, and also to be able to give the user a list of available
* drivers.
*/
struct MidiDriverDescription {
const char *name;
const char *description;
int id;
};
/**
* Get a list of all available MidiDriver types.
* @return list of all available midi drivers, terminated by a zero entry
*/
extern const MidiDriverDescription *getAvailableMidiDrivers();
/** Abstract MIDI Driver Class */
class MidiDriver {
public:
virtual ~MidiDriver() { }
/**
* Error codes returned by open.
* Can be converted to a string with getErrorName().
*/
enum {
MERR_CANNOT_CONNECT = 1,
// MERR_STREAMING_NOT_AVAILABLE = 2,
MERR_DEVICE_NOT_AVAILABLE = 3,
MERR_ALREADY_OPEN = 4
};
enum {
// PROP_TIMEDIV = 1,
PROP_OLD_ADLIB = 2,
PROP_CHANNEL_MASK = 3
};
/**
* Open the midi driver.
* @return 0 if successful, otherwise an error code.
*/
virtual int open() = 0;
/** Close the midi driver. */
virtual void close() = 0;
/** Output a packed midi command to the midi stream. */
virtual void send(uint32 b) = 0;
/** Get or set a property. */
virtual uint32 property(int prop, uint32 param) { return 0; }
/** Retrieve a string representation of an error code. */
static const char *getErrorName(int error_code);
// HIGH-LEVEL SEMANTIC METHODS
virtual void setPitchBendRange (byte channel, uint range)
{
send(( 0 << 16) | (101 << 8) | (0xB0 | channel));
send(( 0 << 16) | (100 << 8) | (0xB0 | channel));
send((range << 16) | ( 6 << 8) | (0xB0 | channel));
send(( 0 << 16) | ( 38 << 8) | (0xB0 | channel));
}
virtual void sysEx (byte *msg, uint16 length) { }
virtual void sysEx_customInstrument (byte channel, uint32 type, byte *instr) { }
virtual void metaEvent (byte type, byte*data, uint16 length) { }
// Timing functions - MidiDriver now operates timers
virtual void setTimerCallback (void *timer_param, TimerProc timer_proc) = 0;
virtual uint32 getBaseTempo (void) = 0;
// Channel allocation functions
virtual MidiChannel *allocateChannel() = 0;
virtual MidiChannel *getPercussionChannel() = 0;
};
class MidiChannel {
public:
virtual MidiDriver *device() = 0;
virtual byte getNumber() = 0;
virtual void release() = 0;
virtual void send (uint32 b) = 0; // 4-bit channel portion is ignored
// Regular messages
virtual void noteOff (byte note) = 0;
virtual void noteOn (byte note, byte velocity) = 0;
virtual void programChange (byte program) = 0;
virtual void pitchBend (int16 bend) = 0; // -0x2000 to +0x1FFF
// Control Change messages
virtual void controlChange (byte control, byte value) = 0;
virtual void modulationWheel (byte value) { controlChange (1, value); }
virtual void volume (byte value) { controlChange (7, value); }
virtual void panPosition (byte value) { controlChange (10, value); }
virtual void pitchBendFactor (byte value) = 0;
virtual void detune (byte value) { controlChange (17, value); }
virtual void priority (byte value) { controlChange (18, value); }
virtual void sustain (bool value) { controlChange (64, value ? 1 : 0); }
virtual void effectLevel (byte value) { controlChange (91, value); }
virtual void chorusLevel (byte value) { controlChange (93, value); }
virtual void allNotesOff() { controlChange (123, 0); }
// SysEx messages
virtual void sysEx_customInstrument (uint32 type, byte *instr) = 0;
};
// Factory functions, for faster compile
extern MidiDriver *MidiDriver_NULL_create();
extern MidiDriver *MidiDriver_ADLIB_create(SoundMixer *mixer);
extern MidiDriver *MidiDriver_WIN_create();
extern MidiDriver *MidiDriver_SEQ_create();
extern MidiDriver *MidiDriver_QT_create();
extern MidiDriver *MidiDriver_CORE_create();
extern MidiDriver *MidiDriver_ETUDE_create();
extern MidiDriver *MidiDriver_ALSA_create();
extern MidiDriver *MidiDriver_YM2612_create(SoundMixer *mixer);
extern MidiDriver *MidiDriver_YamahaPa1_create();
#endif
|
