Rust implementation of DVB-GSE

Related tags

Learning Resources dvb-gse
Overview

dvb-gse

Crates.io Rust

dvg-se is a Rust implementation of the DVB GSE (Generic Stream Encapsulation) protocol and related protocols.

It is mainly intended to be used as a CLI application that receives UDP packets from Longmynd containing fragments of BBFRAMES, obtains IP packets from a continous-mode GSE stream, and sends the IP packets to a TUN device.

The crate can also be used as a library to process GSE Packets and DVB-S2/DVB-S2X BBFRAMES.

Documentation

The documentation for dvb-gse is hosted in docs.rs.

License

Licensed under either of

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

Comments
  • BBFrame multicast input

    BBFrame multicast input

    To allow easy debugging, it could be helpful that dvb-gse could receive udp/multicast bbframes from longmynd. Thus we could inspect input bbframe and result on tun at same time. (ehancement).

    enhancement 
    opened by F5OEO 6
  • MIS not supported

    MIS not supported

    Multiple Input Stream is not supported yet. However, some equipment indicates MIS even with a single stream. BBFrame parsing should be fine by bypassing the strict condition of SIS. The only drawback is if we have concurent IP of different interfaces which are in collision. Adding a filter on ISI could be a solution and send streams to several tun interfaces.

    Proposal : Remove https://github.com/daniestevez/dvb-gse/blob/e61d18e74166172a5f5ae2aaf2da668c3e27cc42/src/bbframe.rs#L138

    enhancement 
    opened by F5OEO 6
  • gsepacket: add option to skip the total length check

    gsepacket: add option to skip the total length check

    Since some modulators put a wrong value in this field, this adds an option to the CLI and the GSE Packet defragmenter to skip the checking of the total length field.

    This closes #11.

    Signed-off-by: Daniel Estévez [email protected]

    opened by daniestevez 0
  • add option to process single ISI in MIS-mode

    add option to process single ISI in MIS-mode

    This adds a command line option to the CLI to run in MIS mode and process only of single ISI (indicated by the user). The corresponding changes in BBFrametDefrag have been implemented.

    This closes #6.

    Signed-off-by: Daniel Estévez [email protected]

    opened by daniestevez 0
  • cli: join multicast group if listening on multicast address

    cli: join multicast group if listening on multicast address

    If the UDP address in which we listen is a multicast address, we should join the multicast group. The multicast group is left automatically when the application terminates.

    Signed-off-by: Daniel Estévez [email protected]

    opened by daniestevez 0
  • Fix defragmentation of Longmynd UDP packets not containing full BBHEADER

    Fix defragmentation of Longmynd UDP packets not containing full BBHEADER

    During testing I have seen that sometimes Longmynd will output a very small (a few bytes) UDP packet that only contains the beginning of the BBHEADER of a BBFRAME. This matches what happens with the FT2232H USB interface: the corresponding bulk transfer only carries a few bytes.

    Most likely this is caused by the bulk transfer being timed such it is executed very shortly after the STV0910 begins to output a BBFRAME. In this case the FT2232H FIFO would only contain the first few bytes of the BBFRAME.

    This fixes the problem by reading multiple UDP packets if necessary, until enough data for a full BBHEADER has been collected. The BBHEADER is then validated as usual.

    I have tested that a ping -s 1450 -i 0.01 with IPv6 on a 1 Msym/s QPSK 1/2 normal FECFRAME no pilots link (which achieves occupancy of ~70%) doesn't lose any packets after this change. There are no drops or decode errors while streaming audio either.

    opened by daniestevez 0
Releases(v0.3.0)
Owner
Daniel Estévez
Daniel Estévez
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