# HG changeset patch
# User Mychaela Falconia <falcon@freecalypso.org>
# Date 1764882106 0
# Node ID 63f774192906e3992873fb6e16f7f16c332b054c
# Parent  54f0f1b74c25cc2935794f7f689f53826f0826a7
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.

diff -r 54f0f1b74c25 -r 63f774192906 libgsmhr1/twts002_in.c
--- a/libgsmhr1/twts002_in.c	Thu Dec 04 19:40:35 2025 +0000
+++ b/libgsmhr1/twts002_in.c	Thu Dec 04 21:01:46 2025 +0000
@@ -23,7 +23,7 @@
 		break;
 	case 1:
 		memset(params, 0, sizeof(int16_t) * GSMHR_NUM_PARAMS);
-		params[18] = 0;		/* BFI */
+		params[18] = 1;		/* BFI */
 		params[20] = 1;		/* SID */
 		break;
 	case 2: