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gst-nmos-rs: emit ST 2110-40 SSN in synthesised ANC SDP - #111

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gst-nmos-rs: emit ST 2110-40 SSN in synthesised ANC SDP#111
garethsb wants to merge 1 commit into
NVIDIA:mainfrom
garethsb:bugfix/anc-sdp-ssn

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Summary

  • Caps-only ANC (meta/x-st-2038) SDP synthesis now emits the ST 2110-40 §7 required fmtp SSN=ST2110-40:2018 (nmos-cpp default when TM is omitted).
  • Optional VPID_Code / repeated DID_SDID are unchanged: supply them via a transport-file SDP if needed.
  • Bug report by @souravpaul98 and @kartikeya-nvidia.

Test plan

  • cargo test -p gst-nmos-rs --lib sdp::
  • Confirm synthesised ANC sender SDP includes SSN=ST2110-40:2018 end-to-end with nvdsudpsink / Rivermax

Caps-only ANC synthesis omitted the required fmtp SSN parameter,
which ST 2110-40 §7 and nmos-cpp expect (ST2110-40:2018 when TM is
absent). Optional VPID_Code / DID_SDID remain transport-file-only.

Signed-off-by: Gareth Sylvester-Bradley <garethsb@nvidia.com>
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