objc2_audio_toolbox

Function AudioFileGetUserDataSize

Source 
pub unsafe extern "C-unwind" fn AudioFileGetUserDataSize(
    in_audio_file: AudioFileID,
    in_user_data_id: u32,
    in_index: u32,
    out_user_data_size: NonNull<u32>,
) -> i32
Available on crate feature AudioFile only.
Expand description

Get the size of user data in a file

Parameter inAudioFile: an AudioFileID.

Parameter inUserDataID: the four char code of the chunk.

Parameter inIndex: an index specifying which chunk if there are more than one.

Parameter outUserDataSize: on output, if successful, the size of the user data chunk.

Returns: returns noErr if successful.