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
|
/* ScummVM - Scumm Interpreter
* Copyright (C) 2001 Ludvig Strigeus
* Copyright (C) 2001-2005 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.
*
* $Header$
*/
/*
* Raw output support by Michael Pearce
* Alsa support by Nicolas Noble <nicolas@nobis-crew.org> copied from
* both the QuickTime support and (vkeybd http://www.alsa-project.org/~iwai/alsa.html)
*/
#if defined(UNIX) && !defined(__BEOS__)
#include "common/stdafx.h"
#include "sound/mpu401.h"
#include "common/util.h"
////////////////////////////////////////
//
// Unix dev/sequencer driver
//
////////////////////////////////////////
#define SEQ_MIDIPUTC 5
class MidiDriver_SEQ : public MidiDriver_MPU401 {
public:
MidiDriver_SEQ();
int open();
void close();
void send(uint32 b);
void sysEx(byte *msg, uint16 length);
private:
bool _isOpen;
int device, _device_num;
};
MidiDriver_SEQ::MidiDriver_SEQ() {
_isOpen = false;
device = 0;
_device_num = 0;
}
int MidiDriver_SEQ::open() {
if (_isOpen)
return MERR_ALREADY_OPEN;
_isOpen = true;
device = 0;
char *device_name = getenv("SCUMMVM_MIDI");
if (device_name != NULL) {
device = (::open((device_name), O_RDWR, 0));
} else {
warning("You need to set-up the SCUMMVM_MIDI environment variable properly (see README) ");
}
if ((device_name == NULL) || (device < 0)) {
if (device_name == NULL)
warning("Opening /dev/null (no music will be heard) ");
else
warning("Cannot open rawmidi device %s - using /dev/null (no music will be heard) ",
device_name);
device = (::open(("/dev/null"), O_RDWR, 0));
if (device < 0)
error("Cannot open /dev/null to dump midi output");
}
if (getenv("SCUMMVM_MIDIPORT"))
_device_num = atoi(getenv("SCUMMVM_MIDIPORT"));
return 0;
}
void MidiDriver_SEQ::close() {
MidiDriver_MPU401::close();
::close(device);
_isOpen = false;
}
void MidiDriver_SEQ::send(uint32 b) {
unsigned char buf[256];
int position = 0;
switch (b & 0xF0) {
case 0x80:
case 0x90:
case 0xA0:
case 0xB0:
case 0xE0:
buf[position++] = SEQ_MIDIPUTC;
buf[position++] = (unsigned char)b;
buf[position++] = _device_num;
buf[position++] = 0;
buf[position++] = SEQ_MIDIPUTC;
buf[position++] = (unsigned char)((b >> 8) & 0x7F);
buf[position++] = _device_num;
buf[position++] = 0;
buf[position++] = SEQ_MIDIPUTC;
buf[position++] = (unsigned char)((b >> 16) & 0x7F);
buf[position++] = _device_num;
buf[position++] = 0;
break;
case 0xC0:
case 0xD0:
buf[position++] = SEQ_MIDIPUTC;
buf[position++] = (unsigned char)b;
buf[position++] = _device_num;
buf[position++] = 0;
buf[position++] = SEQ_MIDIPUTC;
buf[position++] = (unsigned char)((b >> 8) & 0x7F);
buf[position++] = _device_num;
buf[position++] = 0;
break;
default:
fprintf(stderr, "Unknown : %08x\n", (int)b);
break;
}
write(device, buf, position);
}
void MidiDriver_SEQ::sysEx (byte *msg, uint16 length) {
if (length > 254) {
warning ("Cannot send SysEx block - data too large");
return;
}
unsigned char buf [1024];
int position = 0;
byte *chr = msg;
buf[position++] = SEQ_MIDIPUTC;
buf[position++] = 0xF0;
buf[position++] = _device_num;
buf[position++] = 0;
for (; length; --length, ++chr) {
buf[position++] = SEQ_MIDIPUTC;
buf[position++] = (unsigned char) *chr & 0x7F;
buf[position++] = _device_num;
buf[position++] = 0;
}
buf[position++] = SEQ_MIDIPUTC;
buf[position++] = 0xF7;
buf[position++] = _device_num;
buf[position++] = 0;
write (device, buf, position);
}
MidiDriver *MidiDriver_SEQ_create() {
return new MidiDriver_SEQ();
}
#endif
|
