ALSA-specific PortAudio API extension header file. More...

#include "portaudio.h"

Data Structures
struct	PaAlsaStreamInfo

Typedefs
typedef struct PaAlsaStreamInfo	PaAlsaStreamInfo

Functions
void	PaAlsa_InitializeStreamInfo (PaAlsaStreamInfo *info)
void	PaAlsa_EnableRealtimeScheduling (PaStream *s, int enable)
PaError	PaAlsa_GetStreamInputCard (PaStream s, int card)
PaError	PaAlsa_GetStreamOutputCard (PaStream s, int card)
PaError	PaAlsa_SetNumPeriods (int numPeriods)
PaError	PaAlsa_SetRetriesBusy (int retries)
void	PaAlsa_SetLibraryPathName (const char *pathName)

Detailed Description

ALSA-specific PortAudio API extension header file.

Definition in file pa_linux_alsa.h.

Function Documentation

◆ PaAlsa_EnableRealtimeScheduling()

void PaAlsa_EnableRealtimeScheduling	(	PaStream *	s,
		int	enable )

Instruct whether to enable real-time priority when starting the audio thread.

If this is turned on by the stream is started, the audio callback thread will be created with the FIFO scheduling policy, which is suitable for realtime operation.

References PaAlsa_EnableRealtimeScheduling().

Referenced by PaAlsa_EnableRealtimeScheduling().

◆ PaAlsa_GetStreamInputCard()

PaError PaAlsa_GetStreamInputCard	(	PaStream *	s,
		int *	card )

Get the ALSA-lib card index of this stream's input device.

References PaAlsa_GetStreamInputCard().

Referenced by PaAlsa_GetStreamInputCard().

◆ PaAlsa_GetStreamOutputCard()

PaError PaAlsa_GetStreamOutputCard	(	PaStream *	s,
		int *	card )

Get the ALSA-lib card index of this stream's output device.

References PaAlsa_GetStreamOutputCard().

Referenced by PaAlsa_GetStreamOutputCard().

◆ PaAlsa_InitializeStreamInfo()

void PaAlsa_InitializeStreamInfo ( PaAlsaStreamInfo * info )

Initialize host API specific structure, call this before setting relevant attributes.

References PaAlsa_InitializeStreamInfo().

Referenced by PaAlsa_InitializeStreamInfo().

◆ PaAlsa_SetLibraryPathName()

void PaAlsa_SetLibraryPathName ( const char * pathName )

Set the path and name of ALSA library file if PortAudio is configured to load it dynamically (see PA_ALSA_DYNAMIC). This setting will overwrite the default name set by PA_ALSA_PATHNAME define.

Parameters

pathName Full path with filename. Only filename can be used, but dlopen() will lookup default searchable directories (/usr/lib;/usr/local/lib) then.

References PaAlsa_SetLibraryPathName().

Referenced by PaAlsa_SetLibraryPathName().