FreeCalypso > hg > gsm-codec-lib

view libtwamr/bits2prm.h @ 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 f931e704adc5
children
line wrap: on
line source

/*
*****************************************************************************
*
*      GSM AMR-NB speech codec   R98   Version 7.6.0   December 12, 2001
*                                R99   Version 3.3.0                
*                                REL-4 Version 4.1.0                
*
*****************************************************************************
*
*      File             : bits2prm.h
*      Purpose          : Retrieves the vector of encoder parameters from 
*                       : the received serial bits in a frame.
*
*****************************************************************************
*/
#ifndef bits2prm_h
#define bits2prm_h "$Id $"
 
/*
*****************************************************************************
*                         INCLUDE FILES
*****************************************************************************
*/
#include "typedef.h"
#include "tw_amr.h"	/* for enum Mode */
/*
*****************************************************************************
*                         DEFINITION OF DATA TYPES
*****************************************************************************
*/
 
/*
*****************************************************************************
*                         DECLARATION OF PROTOTYPES
*****************************************************************************
*/
/*
**************************************************************************
*
*  Function    : Bits2prm
*  Purpose     : Retrieves the vector of encoder parameters from 
*                the received serial bits in a frame.
*  Returns     : void
*
**************************************************************************
*/
void Bits2prm (
    enum Mode mode,
    const Word16 bits[],   /* input : serial bits (max 244)        */
    Word16 prm[]           /* output: analysis parameters (max 57) */
);
 
#endif