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Cort BuffingtonandClaude Opus 4.8
ae6a7b2ca1
Port of the Python fix (ipsc2hbp fix/ta-ghost-streams). Current XPR8400 firmware,
when a radio transmits with Talker Alias enabled, emits a new IPSC stream every
superframe for one OTA call: the call-seq (byte 5) increments per superframe and
the TA superframes carry the alias text in the common-header src/dst (non-GVCU
FLCO at burst-E byte 56). RTP timestamp stays continuous — it is one call. Read
on the wire: 1 PTT -> 30 IPSC streams (half a phantom 'N0MJS' identity) = the
ghost traffic.
Re-anchor the IPSC->HBP path in translator_ipsc_voice_received:
- Stop treating an IPSC call-seq (byte 5) change as a call boundary; detect a
new call by RTP-timestamp discontinuity (out_call_continues, OUT_RTP_MAX_FWD).
- Late entry anchors identity only to a GVCU (FLCO 0x00) burst E; a Talker
Alias / GPS burst E is skipped (its header src/dst are alias bytes).
- Forward every frame under the LOCKED identity (out_lc) and one stable HBP
stream ID, ignoring per-frame header relabels.
- Relabel the start/end pairing token ipsc_id -> int_seq_id (no longer a stable
IPSC id; it is just a token to pair the log lines).
VOICE_HEAD stays byte-5 anchored (HEAD/TERM carry no usable RTP; a new byte 5 at
a header = new stream). New ipsc_const.h: GV_RTP_TS_OFF, GV_BE_FLAG,
GV_BE_LC_FLCO_OFF, FLCO_GROUP. Parity goldens regenerated from the fixed Python:
make test passes byte-for-byte (DSP 83/83, parity IPSC->HBP 16/16, HBP->IPSC 2/2).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
17 lines
1.7 KiB
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17 lines
1.7 KiB
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