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view libgsmhr1/err_conc.h @ 605:63f774192906

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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 5a7d04bf26f5
children
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#ifndef __ERR_CONC
#define __ERR_CONC

#include "typedefs.h"
#include "tw_gsmhr.h"

/*_________________________________________________________________________
 |                                                                         |
 |                            Function Prototypes                          |
 |_________________________________________________________________________|
*/

  Shortword level_calc(Shortword swInd, Longword *pl_en);

  void   level_estimator_det(struct gsmhr_decoder_state *st,
                                Shortword *pswLevelMean,
                                Shortword *pswLevelMax);

  void   level_estimator_upd(struct gsmhr_decoder_state *st,
                                Shortword pswDecodedSpeechFrame[]);

  void   signal_conceal_sub(Shortword pswPPFExcit[],
                     Shortword ppswSynthAs[], Shortword pswSynthFiltState[],
                       Shortword pswLtpStateOut[], Shortword pswPPreState[],
                                Shortword swLevelMean, Shortword swLevelMax,
                            Shortword swErrorFlag1, Shortword swMuteFlagOld,
                            Shortword *pswMuteFlag, Shortword swMutePermit);

#endif