pub unsafe extern "C" fn gst_buffer_add_audio_level_meta(
buffer: *mut GstBuffer,
level: u8,
voice_activity: gboolean,
) -> *mut GstAudioLevelMeta
pub unsafe extern "C" fn gst_buffer_add_audio_level_meta(
buffer: *mut GstBuffer,
level: u8,
voice_activity: gboolean,
) -> *mut GstAudioLevelMeta