blob: 639ffee64a74be8143e4f440aa27d3b88539f179 (
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
|
//=========================================================
// MusE
// Linux Music Editor
// $Id: mess.cpp,v 1.2 2004/04/15 13:46:18 wschweer Exp $
// (C) Copyright 2004 Werner Schweer (ws@seh.de)
//=========================================================
#include "mess.h"
#include "muse/midi.h"
static const int FIFO_SIZE = 32;
//---------------------------------------------------------
// MessP
//---------------------------------------------------------
struct MessP {
// Event Fifo synti -> Host:
MidiPlayEvent fifo[FIFO_SIZE];
volatile int fifoSize;
int fifoWindex;
int fifoRindex;
};
//---------------------------------------------------------
// Mess
//---------------------------------------------------------
Mess::Mess(int n)
{
_channels = n;
_sampleRate = 44100;
d = new MessP;
d->fifoSize = 0;
d->fifoWindex = 0;
d->fifoRindex = 0;
}
//---------------------------------------------------------
// Mess
//---------------------------------------------------------
Mess::~Mess()
{
delete d;
}
//---------------------------------------------------------
// getGeometry
// dummy
//---------------------------------------------------------
void Mess::getGeometry(int* x, int* y, int* w, int* h) const
{
x = 0;
y = 0;
w = 0;
h = 0;
}
//---------------------------------------------------------
// sendEvent
// send Event synti -> host
//---------------------------------------------------------
void Mess::sendEvent(MidiPlayEvent ev)
{
if (d->fifoSize == FIFO_SIZE) {
printf("event synti->host fifo overflow\n");
return;
}
d->fifo[d->fifoWindex] = ev;
d->fifoWindex = (d->fifoWindex + 1) % FIFO_SIZE;
++(d->fifoSize);
}
//---------------------------------------------------------
// receiveEvent
// called from host
//---------------------------------------------------------
MidiPlayEvent Mess::receiveEvent()
{
MidiPlayEvent ev = d->fifo[d->fifoRindex];
d->fifoRindex = (d->fifoRindex + 1) % FIFO_SIZE;
--(d->fifoSize);
return ev;
}
//---------------------------------------------------------
// eventsPending
// called from host:
// while (eventsPending()) {
// receiveEvent();
// ...
//---------------------------------------------------------
int Mess::eventsPending() const
{
return d->fifoSize;
}
//---------------------------------------------------------
// processEvent
// return true if synti is busy
//---------------------------------------------------------
bool Mess::processEvent(const MidiPlayEvent& ev)
{
switch(ev.type()) {
case ME_NOTEON:
return playNote(ev.channel(), ev.dataA(), ev.dataB());
case ME_NOTEOFF:
return playNote(ev.channel(), ev.dataA(), 0);
case ME_SYSEX:
return sysex(ev.len(), ev.data());
case ME_CONTROLLER:
return setController(ev.channel(), ev.dataA(), ev.dataB());
}
return false;
}
|
