unsafe extern "C" fn audio_aggregator_create_output_buffer<T: AudioAggregatorImpl>(
ptr: *mut GstAudioAggregator,
num_frames: u32,
) -> *mut GstBuffer
unsafe extern "C" fn audio_aggregator_create_output_buffer<T: AudioAggregatorImpl>(
ptr: *mut GstAudioAggregator,
num_frames: u32,
) -> *mut GstBuffer