Inside Macintosh: Sound /

Chapter 5 - Sound Components / Sound Components Reference

Sound Component-Defined Routines / Managing Source Data

SoundComponentPauseSource

A sound output device component must implement the SoundComponentPauseSource function. The Sound Manager calls this function to stop pause the playing of sounds in one or more sound channels.

pascal ComponentResult SoundComponentPauseSource 
                           (ComponentInstance ti, 
                              short count, SoundSource *sources);

ti

A component instance that identifies your sound component.

count

The number of source IDs in the array pointed to by the source parameter.

sources

An array of source IDs.

DESCRIPTION

Your SoundComponentPauseSource function is called by the Sound Manager to pause the playing of the sounds originating from the sound sources specified by the sources parameter. Your function should stop sending data from those sources to the associated sound output device. Because your SoundComponentStartSource function might be called to resume playing sounds, you should not flush any data. If your component supports only one sound source, you can ignore the sources parameter.

RESULT CODES

Your SoundComponentPauseSource function should return noErr if successful or an appropriate result code otherwise. You should return noErr even if no sounds are playing in the specified channels.