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.

/* adaptation between stdint types and those used by ETSI EFR code */

typedef int16_t Word16;
typedef int32_t Word32;
typedef uint8_t Flag;

/* Struct for storing pseudo floating point exponent and mantissa */
struct _fp
{
    Word16 e;          /* exponent */
    Word16 m;          /* mantissa */
};

typedef struct _fp Pfloat;