Audio Queue Parameters
Identifiers for audio queue parameters.
Overview
These parameters apply only to playback audio queues. You can set a playback audio queue parameter in one of two ways:
Set the value to take effect immediately using the AudioQueueSetParameter(_:_:_:) function.
Schedule a value to take effect when a particular audio queue buffer plays. You supply the parameter when you enqueue the buffer. The new value is applied to the audio queue that owns the buffer when that buffer is rendered.
The AudioQueueGetParameter(_:_:_:) function always returns the current value of the parameter for an audio queue.