Inside Macintosh: Sound

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Creating and Removing Audio Sources

To write a sound output device component, you might need to define two routines that create and remove audio sources:

• SoundComponentAddSource
• SoundComponentRemoveSource

Your component needs to contain these functions only if, like the Apple Mixer, it can mix two or more audio channels into a single output stream. Sound components that operate on a single input stream only do not need to include these functions.