Jack2: JackOSSAdapter.h Source File

Jack2 1.9.12

JackOSSAdapter.h
1 /*
2 Copyright (C) 2008 Grame & RTL 2008
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17
18 */
19
20 #ifndef __JackOSSAdapter__
21 #define __JackOSSAdapter__
22
23 #include <math.h>
24 #include <limits.h>
25 #include <assert.h>
26 #include "JackAudioAdapterInterface.h"
27 #include "JackPlatformPlug.h"
28 #include "JackError.h"
29 #include "jack.h"
30 #include "jslist.h"
31
32 namespace Jack
33 {
34
35 typedef jack_default_audio_sample_t jack_sample_t;
36
37 #define OSS_DRIVER_DEF_DEV "/dev/dsp"
38 #define OSS_DRIVER_DEF_FS 48000
39 #define OSS_DRIVER_DEF_BLKSIZE 1024
40 #define OSS_DRIVER_DEF_NPERIODS 2
41 #define OSS_DRIVER_DEF_BITS 16
42 #define OSS_DRIVER_DEF_INS 2
43 #define OSS_DRIVER_DEF_OUTS 2
44
49 class JackOSSAdapter : public JackAudioAdapterInterface, public JackRunnableInterface
50 {
51
52 enum { kRead = 1, kWrite = 2, kReadWrite = 3 };
53
54 private:
55
56 JackThread fThread;
57
58 char fCaptureDriverName[JACK_CLIENT_NAME_SIZE+1];
59 char fPlaybackDriverName[JACK_CLIENT_NAME_SIZE+1];
60
61 int fInFD;
62 int fOutFD;
63
64 int fBits;
65 int fSampleFormat;
66 int fNperiods;
67 unsigned int fSampleSize;
68 int fRWMode;
69 bool fIgnoreHW;
70 bool fExcl;
71
72 unsigned int fInputBufferSize;
73 unsigned int fOutputBufferSize;
74
75 void* fInputBuffer;
76 void* fOutputBuffer;
77
78 float** fInputSampleBuffer;
79 float** fOutputSampleBuffer;
80
81 bool fFirstCycle;
82
83 int OpenInput();
84 int OpenOutput();
85 void CloseAux();
86 void SetSampleFormat();
87 void DisplayDeviceInfo();
88
89 public:
90
91 JackOSSAdapter(jack_nframes_t buffer_size, jack_nframes_t sample_rate, const JSList* params);
92 ~JackOSSAdapter()
93 {}
94
95 int Open();
96 int Close();
97
98 int Read();
99 int Write();
100
101 int SetBufferSize(jack_nframes_t buffer_size);
102
103 bool Execute();
104 };
105
106 }
107
108 #ifdef __cplusplus
109 extern "C"
110 {
111 #endif
112
113 #include "JackCompilerDeps.h"
114 #include "driver_interface.h"
115
116 SERVER_EXPORT jack_driver_desc_t* jack_get_descriptor();
117
118 #ifdef __cplusplus
119 }
120 #endif
121
122 #endif
Jack::JackMachThread
Darwin threads. Real-time threads are actually "time constraint" threads.
Definition: JackMachThread.h:92
Jack::JackAudioAdapterInterface
Base class for audio adapters.
Definition: JackAudioAdapterInterface.h:65
Jack::JackOSSAdapter
The OSS adapter.
Definition: JackOSSAdapter.h:49
Jack::JackRunnableInterface
The base class for runnable objects, that have an Init and Execute method to be called in a threa...
Definition: JackThread.h:34
jack_driver_desc_t
Definition: driver_interface.h:132
_JSList
Definition: linux/alsa/jslist.h:35