PortAudio  2.0
pa_linux_alsa.h
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1 #ifndef PA_LINUX_ALSA_H
2 #define PA_LINUX_ALSA_H
3 
4 /*
5  * $Id$
6  * PortAudio Portable Real-Time Audio Library
7  * ALSA-specific extensions
8  *
9  * Copyright (c) 1999-2000 Ross Bencina and Phil Burk
10  *
11  * Permission is hereby granted, free of charge, to any person obtaining
12  * a copy of this software and associated documentation files
13  * (the "Software"), to deal in the Software without restriction,
14  * including without limitation the rights to use, copy, modify, merge,
15  * publish, distribute, sublicense, and/or sell copies of the Software,
16  * and to permit persons to whom the Software is furnished to do so,
17  * subject to the following conditions:
18  *
19  * The above copyright notice and this permission notice shall be
20  * included in all copies or substantial portions of the Software.
21  *
22  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
25  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
26  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
27  * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29  */
30 
31 /*
32  * The text above constitutes the entire PortAudio license; however,
33  * the PortAudio community also makes the following non-binding requests:
34  *
35  * Any person wishing to distribute modifications to the Software is
36  * requested to send the modifications to the original developer so that
37  * they can be incorporated into the canonical version. It is also
38  * requested that these non-binding requests be included along with the
39  * license above.
40  */
41 
47 #include "portaudio.h"
48 
49 #ifdef __cplusplus
50 extern "C" {
51 #endif
52 
53 typedef struct PaAlsaStreamInfo
54 {
55  unsigned long size;
56  PaHostApiTypeId hostApiType;
57  unsigned long version;
58 
59  const char *deviceString;
60 }
62 
65 
71 void PaAlsa_EnableRealtimeScheduling( PaStream *s, int enable );
72 
73 #if 0
74 void PaAlsa_EnableWatchdog( PaStream *s, int enable );
75 #endif
76 
79 
82 
89 PaError PaAlsa_SetNumPeriods( int numPeriods );
90 
94 PaError PaAlsa_SetRetriesBusy( int retries );
95 
101 void PaAlsa_SetLibraryPathName( const char *pathName );
102 
103 #ifdef __cplusplus
104 }
105 #endif
106 
107 #endif