unsafe extern "C" fn video_encoder_handle_frame<T: VideoEncoderImpl>(
ptr: *mut GstVideoEncoder,
frame: *mut GstVideoCodecFrame,
) -> GstFlowReturn
unsafe extern "C" fn video_encoder_handle_frame<T: VideoEncoderImpl>(
ptr: *mut GstVideoEncoder,
frame: *mut GstVideoCodecFrame,
) -> GstFlowReturn