AudioFileComponentGetUserData

objc2_audio_toolbox

Function AudioFileComponentGetUserData 

Source 
pub unsafe extern "C-unwind" fn AudioFileComponentGetUserData(
    in_component: AudioFileComponent,
    in_user_data_id: u32,
    in_index: u32,
    io_user_data_size: NonNull<u32>,
    out_user_data: NonNull<c_void>,
) -> i32
Available on crate feature AudioComponent only.
Expand description

implements AudioFileGetUserData.

Parameter inComponent: an AudioFileComponent

Parameter inUserDataID: the four char code of the chunk.

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

Parameter ioUserDataSize: the size of the buffer on input, size of bytes copied to buffer on output

Parameter outUserData: a pointer to a buffer in which to copy the chunk data.

Returns: returns noErr if successful.

ยงSafety

  • in_component must be a valid pointer.
  • io_user_data_size must be a valid pointer.
  • out_user_data must be a valid pointer.