FreeCalypso > hg > gsm-codec-lib

annotate libgsmfr2/pp_state.h @ 542:f2d0f2f15d5f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
libgsmefr: add wrapper for TW-TS-001 RTP input
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 28 Sep 2024 06:38:08 +0000
parents 96c4ed5529bf
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3
3cd5ad24b1d4 libgsmfrp: implement internal state
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
256
a33edf624061 libgsmfr2: start with API definition and port of libgsmfrp code
Mychaela Falconia <falcon@freecalypso.org>
parents: 248
diff changeset
2 * This header file is internal to libgsmfr2;
a33edf624061 libgsmfr2: start with API definition and port of libgsmfrp code
Mychaela Falconia <falcon@freecalypso.org>
parents: 248
diff changeset
3 * here we define our state structure for the Rx DTX preprocessor component.
3
3cd5ad24b1d4 libgsmfrp: implement internal state
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 */
3cd5ad24b1d4 libgsmfrp: implement internal state
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5
256
a33edf624061 libgsmfr2: start with API definition and port of libgsmfrp code
Mychaela Falconia <falcon@freecalypso.org>
parents: 248
diff changeset
6 enum rx_dtx_st {
3
3cd5ad24b1d4 libgsmfrp: implement internal state
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 NO_DATA = 0,
3cd5ad24b1d4 libgsmfrp: implement internal state
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 SPEECH,
3cd5ad24b1d4 libgsmfrp: implement internal state
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 SPEECH_MUTING,
3cd5ad24b1d4 libgsmfrp: implement internal state
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 COMFORT_NOISE,
3cd5ad24b1d4 libgsmfrp: implement internal state
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 LOST_SID,
242
f081a6850fb5 libgsmfrp: new refined implementation
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
12 CN_MUTING,
3
3cd5ad24b1d4 libgsmfrp: implement internal state
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 };
3cd5ad24b1d4 libgsmfrp: implement internal state
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14
3cd5ad24b1d4 libgsmfrp: implement internal state
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 struct gsmfr_preproc_state {
256
a33edf624061 libgsmfr2: start with API definition and port of libgsmfrp code
Mychaela Falconia <falcon@freecalypso.org>
parents: 248
diff changeset
16 enum rx_dtx_st rx_state;
a33edf624061 libgsmfr2: start with API definition and port of libgsmfrp code
Mychaela Falconia <falcon@freecalypso.org>
parents: 248
diff changeset
17 uint8_t speech_frame[GSMFR_RTP_FRAME_LEN];
a33edf624061 libgsmfr2: start with API definition and port of libgsmfrp code
Mychaela Falconia <falcon@freecalypso.org>
parents: 248
diff changeset
18 uint8_t sid_prefix[5];
242
f081a6850fb5 libgsmfrp: new refined implementation
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
19 uint8_t sid_xmaxc;
4
286d5f097eb4 libgsmfrp: implement comfort noise generation
Mychaela Falconia <falcon@freecalypso.org>
parents: 3
diff changeset
20 uint32_t cn_random_lfsr;
530
96c4ed5529bf libgsmfr2 preproc: implement support for DTXd
Mychaela Falconia <falcon@freecalypso.org>
parents: 262
diff changeset
21 uint8_t cn_random_6fold;
96c4ed5529bf libgsmfr2 preproc: implement support for DTXd
Mychaela Falconia <falcon@freecalypso.org>
parents: 262
diff changeset
22 uint8_t dtxd_nodata_count;
96c4ed5529bf libgsmfr2 preproc: implement support for DTXd
Mychaela Falconia <falcon@freecalypso.org>
parents: 262
diff changeset
23 uint8_t dtxd_sid_flag;
3
3cd5ad24b1d4 libgsmfrp: implement internal state
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 };
4
286d5f097eb4 libgsmfrp: implement comfort noise generation
Mychaela Falconia <falcon@freecalypso.org>
parents: 3
diff changeset
25
286d5f097eb4 libgsmfrp: implement comfort noise generation
Mychaela Falconia <falcon@freecalypso.org>
parents: 3
diff changeset
26 /* we use the same LFSR PRNG for CN as ETSI EFR implementation */
286d5f097eb4 libgsmfrp: implement comfort noise generation
Mychaela Falconia <falcon@freecalypso.org>
parents: 3
diff changeset
27 #define PN_INITIAL_SEED 0x70816958L /* Pseudo noise generator seed value */