FreeCalypso > hg > gsm-codec-lib

annotate libgsmefr/dtx_defs.h @ 282:9ee8ad3d4d30

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frtest: rm gsmfr-hand-test and gsmfr-max-out utils These hack programs were never properly documented and were written only as part of a debug chase, in pursuit of a bug that ultimately turned out to be in our then-hacky patch to osmo-bts-sysmo, before beginning of proper patches in Osmocom. These hack programs need to be dropped from the present sw package because they depend on old libgsm, and we are eliminating that dependency.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 14 Apr 2024 05:44:47 +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)