NAME

AOutputChannels − get D/A output channels existing on current hardware

SYNOPSIS

#include <audio/Alib.h>

AOutputChMask AOutputChannels(Audio *audio);

DESCRIPTION

AOutputChannels() returns a mask showing the Digital and/or Analog output channels that exist on the current hardware.  Each bit in the returned AOutputChMask correponds to one output channel. 

audio specifies the Audio structure associated with this connection. 

RETURN VALUE

Upon successful completion, AOutputChannels() returns a mask showing the output channels that exist on the current hardware: mono, left, or right output.  Each bit in the returned AOutputChMask correponds to one type of output channel. 

ERRORS

AOutputChannels() does not return an error status. 

EXAMPLES

The following example gets the types of output channels that exist on the current hardware. 

AOutputChMask out_channels;   /* output channel mask */
Audio *audio;                 /* audio connection */
.
.
.
/* get output sources */
out_channels = AOutputChannels(audio);

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 the hardware manual that accompanies your system. 

AUTHOR

AOutputChannels() was developed by HP. 

SEE ALSO

AGetChannelGain(3X) AGetGain(3X), AGetSystemChannelGain(3X), AGMGainRestricted(3X), AInputChannels(3X), AInputSources(3X), AMaxInputGain(3X), AMaxOutputGain(3X), AMinInputGain(3X), AMinOutputGain(3X), AOutputDestinations(3X), ASetChannelGain(3X), ASetGain(3X), ASetSystemChannelGain(3X), ASimplePlayer(3X), ASimpleRecorder(3X). 

Using the Audio Application Program Interface.

Hewlett-Packard Company  —  HP-UX Release 9.03: April 1994