FreeCalypso > hg > gsm-codec-lib

annotate libgsmefr/dec_wrap.c @ 605:63f774192906

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
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 f80a3202c8ff
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
95
f80a3202c8ff libgsmefr: implement main decoder wrapper
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
f80a3202c8ff libgsmefr: implement main decoder wrapper
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This module contains our EFR_decode_frame() function, which is the primary
f80a3202c8ff libgsmefr: implement main decoder wrapper
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * (most common, most useful) interface to our EFR decoder.
f80a3202c8ff libgsmefr: implement main decoder wrapper
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 */
f80a3202c8ff libgsmefr: implement main decoder wrapper
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5
f80a3202c8ff libgsmefr: implement main decoder wrapper
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 #include "gsm_efr.h"
f80a3202c8ff libgsmefr: implement main decoder wrapper
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7
f80a3202c8ff libgsmefr: implement main decoder wrapper
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 void EFR_decode_frame(struct EFR_decoder_state *st, const uint8_t *frame,
f80a3202c8ff libgsmefr: implement main decoder wrapper
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 int bfi, int taf, int16_t *pcm_out)
f80a3202c8ff libgsmefr: implement main decoder wrapper
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 {
f80a3202c8ff libgsmefr: implement main decoder wrapper
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 int16_t params[EFR_NUM_PARAMS];
f80a3202c8ff libgsmefr: implement main decoder wrapper
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 int sid;
f80a3202c8ff libgsmefr: implement main decoder wrapper
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13
f80a3202c8ff libgsmefr: implement main decoder wrapper
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 EFR_frame2params(frame, params);
f80a3202c8ff libgsmefr: implement main decoder wrapper
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 sid = EFR_sid_classify(frame);
f80a3202c8ff libgsmefr: implement main decoder wrapper
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 EFR_decode_params(st, params, bfi, sid, taf, pcm_out);
f80a3202c8ff libgsmefr: implement main decoder wrapper
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 }