blob: b3b293bb282e6305166c884a303e429b9119801a (
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
|
//=============================================================================
// MusE
// Linux Music Editor
//
// Copyright (C) 1999-2011 by Werner Schweer and others
//
// 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; 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.
//=============================================================================
#include "controlfifo.h"
namespace MusECore {
//---------------------------------------------------------
// ControlFifo
// put
// return true on fifo overflow
//---------------------------------------------------------
bool ControlFifo::put(const ControlEvent& event)
{
if (size < CONTROL_FIFO_SIZE) {
fifo[wIndex] = event;
wIndex = (wIndex + 1) % CONTROL_FIFO_SIZE;
++size;
return false;
}
return true;
}
//---------------------------------------------------------
// get
//---------------------------------------------------------
ControlEvent ControlFifo::get()
{
ControlEvent event(fifo[rIndex]);
rIndex = (rIndex + 1) % CONTROL_FIFO_SIZE;
--size;
return event;
}
//---------------------------------------------------------
// peek
//---------------------------------------------------------
const ControlEvent& ControlFifo::peek(int n)
{
int idx = (rIndex + n) % CONTROL_FIFO_SIZE;
return fifo[idx];
}
//---------------------------------------------------------
// remove
//---------------------------------------------------------
void ControlFifo::remove()
{
rIndex = (rIndex + 1) % CONTROL_FIFO_SIZE;
--size;
}
} // namespace MusECore
|
