AudioQueueGetParameter

objc2_audio_toolbox

Function AudioQueueGetParameter 

Source 
pub unsafe extern "C-unwind" fn AudioQueueGetParameter(
    in_aq: AudioQueueRef,
    in_param_id: AudioQueueParameterID,
    out_value: NonNull<AudioQueueParameterValue>,
) -> i32
Available on crate feature AudioQueue only.
Expand description

Obtains an audio queue parameter value.

You can access the current parameter values for an audio queue at any time with this function.

Parameter inAQ: The audio queue whose parameter value you want to obtain.

Parameter inParamID: The ID of the parameter you want to obtain. In macOS v10.5, audio queues have one parameter available: kAudioQueueParam_Volume, which controls the queue’s playback volume.

Parameter outValue: On return, points to the current value of the specified parameter.

Returns: An OSStatus result code.

§Safety

  • in_aq must be a valid pointer.
  • out_value must be a valid pointer.