AInputSources(3X)

NAME

AInputSources − get types of input sources supported by audio controller

SYNOPSIS

#include <Alib.h> AInputSrcMask
AInputSources (

Audio ∗ audio );

DESCRIPTION

audio specifies the Audio structure associated with this connection.

RETURN VALUE

Upon successful completion, AInputSources() returns a mask showing the types of input sources supported by the audio controller: mono, left, or right microphone input jacks, and mono, left, or right auxiliary input jacks. Each bit in the returned AInputSrcMask correponds to one type of input source (see Structures section).

STRUCTURES

The following are defined in /opt/audio/include/Alib.h:

typedef long                    AInputSrcMask;
#define AMonoMicrophoneMask     ( 1 << AISTMonoMicrophone )
#define AMonoAuxiliaryMask      ( 1 << AISTMonoAuxiliary )
#define ALeftMicrophoneMask     ( 1 << AISTLeftMicrophone )
#define ARightMicrophoneMask    ( 1 << AISTRightMicrophone )
#define ALeftAuxiliaryMask      ( 1 << AISTLeftAuxiliary )
#define ARightAuxiliaryMask     ( 1 << AISTRightAuxiliary )
#define ADefaultInputMask       ( 1 << AISTDefaultInput )

ERRORS

AInputSources() does not return an error status. Note that the application program may crash if audio does not point to a valid Audio structure.

EXAMPLE

The following example gets the types of input sources supported by the audio controller.

AInputSrcMask sources; /∗ input source mask ∗/

Audio ∗ audio; /∗ audio connection ∗/
.
.
.

/∗ get input sources ∗/

sources = AInputSources(audio);

NOTES

AInputSources() is a convenience function that enables the client program to examine a component of the internal Audio structure that is created by AOpenAudio(). The contents of the structure should be treated as read-only.

In order to ensure that the compiler finds the Audio Library (libAlib.sl) and the Alib.h header file, you must add the following switches:

-L /opt/audio/lib
-I/opt/audio/include

DEPENDENCIES

This function belongs to the Audio Library of functions that manage connections to an audio server. The audio server must run on a system that has audio hardware. To find out whether or not your system has audio hardware, refer to Using the Audio Developer’s Kit or the online help for the Audio control panel. For information about the audio capabilities of a particular system use the online example audioinfo.c.

AUTHOR

AInputSources() was developed by HP.

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