NABufferType::VideoPacked(ref vb) => vb.get_offset(idx),
NABufferType::AudioU8(ref ab) => ab.get_offset(idx),
NABufferType::AudioI16(ref ab) => ab.get_offset(idx),
NABufferType::VideoPacked(ref vb) => vb.get_offset(idx),
NABufferType::AudioU8(ref ab) => ab.get_offset(idx),
NABufferType::AudioI16(ref ab) => ab.get_offset(idx),
NABufferType::AudioF32(ref ab) => ab.get_offset(idx),
NABufferType::AudioPacked(ref ab) => ab.get_offset(idx),
_ => 0,
NABufferType::AudioF32(ref ab) => ab.get_offset(idx),
NABufferType::AudioPacked(ref ab) => ab.get_offset(idx),
_ => 0,