view libgsmefr/dtx_defs.h @ 585:3c6bf0d26ee7 default tip

TW-TS-005 reader: fix maximum line length bug TW-TS-005 section 4.1 states: The maximum allowed length of each line is 80 characters, not including the OS-specific newline encoding. The implementation of this line length limit in the TW-TS-005 hex file reader function in the present suite was wrong, such that lines of the full maximum length could not be read. Fix it. Note that this bug affects comment lines too, not just actual RTP payloads. Neither Annex A nor Annex B features an RTP payload format that goes to the maximum of 40 bytes, but if a comment line goes to the maximum allowed length of 80 characters not including the terminating newline, the bug will be triggered, necessitating the present fix.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 25 Feb 2025 07:49:28 +0000
parents c1d53064b410
children
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/*
 * The definitions contained in this header file originally lived in
 * dtx.c; they are being factored out into a new header file as part of
 * splitting of dtx.c code into common, encoder-only and decoder-only
 * parts.
 */

/* Inverse values of DTX hangover period and DTX hangover period + 1 */

#define INV_DTX_HANGOVER (0x7fff / DTX_HANGOVER)
#define INV_DTX_HANGOVER_P1 (0x7fff / (DTX_HANGOVER+1))

#define NB_PULSE 10 /* Number of pulses in fixed codebook excitation */

/* Constant DTX_ELAPSED_THRESHOLD is used as threshold for allowing
   SID frame updating without hangover period in case when elapsed
   time measured from previous SID update is below 24 */

#define DTX_ELAPSED_THRESHOLD (24 + DTX_HANGOVER - 1)