Jack2 1.9.12

JackTimedDriver.h
1 /*
2 Copyright (C) 2001 Paul Davis
3 Copyright (C) 2004-2008 Grame
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18
19 */
20
21 #ifndef __JackTimedDriver__
22 #define __JackTimedDriver__
23
24 #include "JackAudioDriver.h"
25
26 namespace Jack
27 {
28
33 class SERVER_EXPORT JackTimedDriver : public JackAudioDriver
34 {
35 protected:
36
37 int fCycleCount;
38 jack_time_t fAnchorTimeUsec;
39
40 int FirstCycle(jack_time_t cur_time);
41 int CurrentCycle(jack_time_t cur_time);
42
43 void ProcessWait();
44
45 public:
46
47 JackTimedDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table)
48 : JackAudioDriver(name, alias, engine, table), fCycleCount(0), fAnchorTimeUsec(0)
49 {}
50 virtual ~JackTimedDriver()
51 {}
52
53 // BufferSize can be changed
54 bool IsFixedBufferSize()
55 {
56 return false;
57 }
58
59 int Start();
60
61 };
62
63 class SERVER_EXPORT JackWaiterDriver : public JackTimedDriver
64 {
65
66 public:
67
68 JackWaiterDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table)
69 : JackTimedDriver(name, alias, engine, table)
70 {}
71 virtual ~JackWaiterDriver()
72 {}
73
74 virtual int ProcessNull();
75
76 };
77
84 class SERVER_EXPORT JackRestarterDriver : public JackWaiterDriver
85 {
86
87 private:
88
89 JackDriver* fRestartDriver;
91 public:
92
93 JackRestarterDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table)
94 : JackWaiterDriver(name, alias, engine, table), fRestartDriver(NULL)
95 {}
96 virtual ~JackRestarterDriver()
97 {}
98
99 void SetRestartDriver(JackDriver* driver);
100 int RestartWait();
102 };
103
104 } // end of namespace
105
106 #endif
Jack::JackTimedDriver
The timed driver.
Definition: JackTimedDriver.h:33
Jack::JackLockedEngine
Locked Engine, access to methods is serialized using a mutex.
Definition: JackLockedEngine.h:78
Jack::JackPosixSemaphore
Inter process synchronization using POSIX semaphore.
Definition: JackPosixSemaphore.h:36
Jack::JackDriver
Definition: JackDriver.h:127
Jack::JackAudioDriver
The base class for audio drivers: drivers with audio ports.
Definition: JackAudioDriver.h:42
Jack::JackRestarterDriver
A restartable driver.
Definition: JackTimedDriver.h:84
Jack::JackWaiterDriver
Definition: JackTimedDriver.h:63