FreeCalypso > hg > gsm-codec-lib

annotate libgsmefr/dtx_defs.h @ 287:f00925b533b7

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
gsmfr-encode: convert to libgsmfr2
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 14 Apr 2024 06:16:47 +0000
parents c1d53064b410
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
119
c1d53064b410 libgsmefr: split dtx.c into dtx_{common,dec,enc}.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 67
diff changeset
1 /*
c1d53064b410 libgsmefr: split dtx.c into dtx_{common,dec,enc}.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 67
diff changeset
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
diff changeset
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
diff changeset
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
diff changeset
5 * parts.
c1d53064b410 libgsmefr: split dtx.c into dtx_{common,dec,enc}.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 67
diff changeset
6 */
66
824ff833bda9 libgsmefr/dtx.c: initial import from ETSI code
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7
824ff833bda9 libgsmefr/dtx.c: initial import from ETSI code
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 /* Inverse values of DTX hangover period and DTX hangover period + 1 */
824ff833bda9 libgsmefr/dtx.c: initial import from ETSI code
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9
824ff833bda9 libgsmefr/dtx.c: initial import from ETSI code
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 #define INV_DTX_HANGOVER (0x7fff / DTX_HANGOVER)
824ff833bda9 libgsmefr/dtx.c: initial import from ETSI code
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 #define INV_DTX_HANGOVER_P1 (0x7fff / (DTX_HANGOVER+1))
824ff833bda9 libgsmefr/dtx.c: initial import from ETSI code
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12
824ff833bda9 libgsmefr/dtx.c: initial import from ETSI code
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 #define NB_PULSE 10 /* Number of pulses in fixed codebook excitation */
824ff833bda9 libgsmefr/dtx.c: initial import from ETSI code
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14
824ff833bda9 libgsmefr/dtx.c: initial import from ETSI code
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 /* Constant DTX_ELAPSED_THRESHOLD is used as threshold for allowing
824ff833bda9 libgsmefr/dtx.c: initial import from ETSI code
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 SID frame updating without hangover period in case when elapsed
824ff833bda9 libgsmefr/dtx.c: initial import from ETSI code
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 time measured from previous SID update is below 24 */
824ff833bda9 libgsmefr/dtx.c: initial import from ETSI code
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18
824ff833bda9 libgsmefr/dtx.c: initial import from ETSI code
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 #define DTX_ELAPSED_THRESHOLD (24 + DTX_HANGOVER - 1)