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annotate libgsmefr/dtx_defs.h @ 550:de333989a12b

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document gsm[e]fr-decode-tw5[-r] utilities
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 05 Oct 2024 02:16:48 +0000
parents c1d53064b410
children
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c1d53064b410 libgsmefr: split dtx.c into dtx_{common,dec,enc}.c
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1 /*
c1d53064b410 libgsmefr: split dtx.c into dtx_{common,dec,enc}.c
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2 * The definitions contained in this header file originally lived in
c1d53064b410 libgsmefr: split dtx.c into dtx_{common,dec,enc}.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 67
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3 * dtx.c; they are being factored out into a new header file as part of
c1d53064b410 libgsmefr: split dtx.c into dtx_{common,dec,enc}.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 67
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4 * splitting of dtx.c code into common, encoder-only and decoder-only
c1d53064b410 libgsmefr: split dtx.c into dtx_{common,dec,enc}.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 67
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5 * parts.
c1d53064b410 libgsmefr: split dtx.c into dtx_{common,dec,enc}.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 67
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6 */
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824ff833bda9 libgsmefr/dtx.c: initial import from ETSI code
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8 /* Inverse values of DTX hangover period and DTX hangover period + 1 */
824ff833bda9 libgsmefr/dtx.c: initial import from ETSI code
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10 #define INV_DTX_HANGOVER (0x7fff / DTX_HANGOVER)
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11 #define INV_DTX_HANGOVER_P1 (0x7fff / (DTX_HANGOVER+1))
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13 #define NB_PULSE 10 /* Number of pulses in fixed codebook excitation */
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15 /* Constant DTX_ELAPSED_THRESHOLD is used as threshold for allowing
824ff833bda9 libgsmefr/dtx.c: initial import from ETSI code
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16 SID frame updating without hangover period in case when elapsed
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17 time measured from previous SID update is below 24 */
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19 #define DTX_ELAPSED_THRESHOLD (24 + DTX_HANGOVER - 1)