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use super::{CodecExtra, Depacketizer, PacketError, Packetizer};
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3
#[derive(Debug)]
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pub struct NullPacketizer;
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#[derive(Debug)]
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pub struct NullDepacketizer;
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impl Packetizer for NullPacketizer {
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    fn packetize(&mut self, _mtu: usize, b: &[u8]) -> Result<Vec<Vec<u8>>, PacketError> {
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        Ok(vec![b.to_vec()])
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    }
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    fn is_marker(&mut self, _data: &[u8], _previous: Option<&[u8]>, _last: bool) -> bool {
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        unreachable!("rtp_mode doesn't use is_marker")
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    }
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}
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impl Depacketizer for NullDepacketizer {
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    fn out_size_hint(&self, packets_size: usize) -> Option<usize> {
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        Some(packets_size)
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    }
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    fn depacketize(
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        &mut self,
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        packet: &[u8],
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        out: &mut Vec<u8>,
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        _codec_extra: &mut CodecExtra,
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    ) -> Result<(), PacketError> {
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        out.extend_from_slice(packet);
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        Ok(())
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    }
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    fn is_partition_head(&self, _packet: &[u8]) -> bool {
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        // For rtp-mode since each packet is stand alone, it is both a partition head and tail.
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        true
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    }
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    fn is_partition_tail(&self, _marker: bool, _packet: &[u8]) -> bool {
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        // For rtp-mode since each packet is stand alone, it is both a partition head and tail.
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        true
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    }
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}