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
|
/* ScummVM - Scumm Interpreter
* 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.
*
* $Header$
*/
#include "stdafx.h"
#include "mpu401.h"
#include "common/timer.h"
#include "common/util.h" // for ARRAYSIZE
void MidiChannel_MPU401::init(MidiDriver_MPU401 *owner, byte channel) {
_owner = owner;
_channel = channel;
_allocated = false;
}
MidiDriver *MidiChannel_MPU401::device() {
return _owner;
}
void MidiChannel_MPU401::send (uint32 b) {
_owner->send (b & 0xFFFFFFF0 | (_channel & 0xF));
}
void MidiChannel_MPU401::noteOff (byte note) {
_owner->send(note << 8 | 0x80 | _channel);
}
void MidiChannel_MPU401::noteOn(byte note, byte velocity) {
_owner->send(velocity << 16 | note << 8 | 0x90 | _channel);
}
void MidiChannel_MPU401::programChange(byte program) {
_owner->send(program << 8 | 0xC0 | _channel);
}
void MidiChannel_MPU401::pitchBend(int16 bend) {
_owner->send((((bend + 0x2000) >> 7) & 0x7F) << 16 | ((bend + 0x2000) & 0x7F) << 8 | 0xE0 | _channel);
}
void MidiChannel_MPU401::controlChange(byte control, byte value) {
_owner->send(value << 16 | control << 8 | 0xB0 | _channel);
}
void MidiChannel_MPU401::pitchBendFactor(byte value) {
_owner->setPitchBendRange(_channel, value);
}
void MidiChannel_MPU401::sysEx_customInstrument(uint32 type, byte *instr) {
_owner->sysEx_customInstrument(_channel, type, instr);
}
const char *MidiDriver::getErrorName(int error_code) {
static const char *const midi_errors[] = {
"No error",
"Cannot connect",
"Streaming not available",
"Device not available",
"Driver already open"
};
if ((uint) error_code >= ARRAYSIZE(midi_errors))
return "Unknown Error";
return midi_errors[error_code];
}
MidiDriver_MPU401::MidiDriver_MPU401() :
MidiDriver(),
_timer_proc (0),
_channel_mask (0xFFFF) // Permit all 16 channels by default
{
uint i;
for (i = 0; i < ARRAYSIZE(_midi_channels); ++i) {
_midi_channels [i].init (this, i);
}
}
void MidiDriver_MPU401::close() {
if (_timer_proc)
g_timer->releaseProcedure(_timer_proc);
_timer_proc = 0;
for (int i = 0; i < 16; ++i)
send (0x7B << 8 | 0xB0 | i);
}
uint32 MidiDriver_MPU401::property (int prop, uint32 param) {
switch (prop) {
case PROP_CHANNEL_MASK:
_channel_mask = param & 0xFFFF;
return 1;
}
return 0;
}
MidiChannel *MidiDriver_MPU401::allocateChannel() {
MidiChannel_MPU401 *chan;
uint i;
for (i = 0; i < ARRAYSIZE(_midi_channels); ++i) {
if (i == 9 || !(_channel_mask & (1 << i)))
continue;
chan = &_midi_channels[i];
if (!chan->_allocated) {
chan->allocate();
return chan;
}
}
return NULL;
}
void MidiDriver_MPU401::setTimerCallback(void *timer_param, TimerProc timer_proc) {
if (!_timer_proc || !timer_proc) {
if (_timer_proc)
g_timer->releaseProcedure(_timer_proc);
_timer_proc = timer_proc;
if (timer_proc)
g_timer->installProcedure(timer_proc, 10000, timer_param);
}
}
|
