FreeCalypso > hg > gsm-codec-lib
view WIP:gsmhr @ 605:63f774192906
gsmhr_decoder_twts002_in(): set BFI=1 SID=1 for invalid SID
When a received TW-TS-002 RTP payload indicates invalid SID,
which of the 3 possible BFI/SID combinations should we pass to
our internal ETSI-based speech decoder or TFO engine?
Our original code passed BFI=0 SID=1, but upon further reflection,
BFI=1 SID=1 is a better choice. In the corner case where received
invalid SID is fed to a full decoder in homed state, setting BFI=1
allows that decoder to emit zeros on PCM and stay homed, instead of
launching into full decoding.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Thu, 04 Dec 2025 21:01:46 +0000 |
| parents | b7ddcb178ef6 |
| children |
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The present state of gsm-codec-lib Hg repository is a Work In Progress with respect to addition of libgsmhr1, a WIP library seeking to implement GSM-HR codec in a way that fits into the grander vision of Themyscira Wireless. In the present WIP state absolutely NO commitments are being made with regard to API stability - the current WIP API can change at any moment! As a reminder, NO binary packages or build recipes should be made from this WIP state! If you don't need GSM-HR codec, please use the latest stable release tarball; if you do need GSM-HR codec, please wait until libgsmhr1 reaches version 1.0.0 per SemVer. If you need some GSM-HR functions (e.g., frame packing and unpacking) and cannot wait for libgsmhr1 version 1.0.0, the acceptable interim solution is to lift those individual C modules out of this repository and plop them directly into your own code - doing so would be more acceptable than making installable packages out of the present WIP.