Inside Macintosh: Sound /

Chapter 5 - Sound Components / Sound Components Reference

Constants

Action Flags

You can use constants to specify the action flags in the actions parameter of the SoundComponentPlaySourceBuffer function. See page 5-49 for information about this function.

#define kSourcePaused            (1 << 0)
#define kPassThrough             (1 << 16)
#define kNoSoundComponentChain   (1 << 17)

Constant descriptions

kSourcePaused

If this bit is set, the component chain is configured to play the specified sound but the playback is initially paused. In this case, your SoundComponentStartSource function must be called to begin playback. If this bit is clear, the playback begins immediately once the component chain is set up and configured.

kPassThrough

If this bit is set, the Sound Manager passes all data through to the sound output device component unmodified. A sound output device component that can handle any sample rate and sound format described in a sound parameter block should set this bit.

kNoSoundComponentChain

If this bit is set, the Sound Manager does not construct a component chain for processing the sound data.