FreeCalypso > hg > gsm-codec-lib

annotate libgsmfr2/enc_homing.c @ 556:18aca50d68df default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
doc/Calypso-TCH-downlink: update for FR1 BFI-with-data
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 11 Oct 2024 01:54:00 +0000
parents 5fbb323b2978
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
275
5fbb323b2978 libgsmfr2: implement encoder homing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
5fbb323b2978 libgsmfr2: implement encoder homing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This module contains our implementation of the optional homing feature
5fbb323b2978 libgsmfr2: implement encoder homing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * for our GSM 06.10 encoder.
5fbb323b2978 libgsmfr2: implement encoder homing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 */
5fbb323b2978 libgsmfr2: implement encoder homing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5
5fbb323b2978 libgsmfr2: implement encoder homing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 #include <stdint.h>
5fbb323b2978 libgsmfr2: implement encoder homing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 #include "tw_gsmfr.h"
5fbb323b2978 libgsmfr2: implement encoder homing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8
5fbb323b2978 libgsmfr2: implement encoder homing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 void gsmfr_0610_encoder_homing(struct gsmfr_0610_state *st, const int16_t *pcm)
5fbb323b2978 libgsmfr2: implement encoder homing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 {
5fbb323b2978 libgsmfr2: implement encoder homing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 int i;
5fbb323b2978 libgsmfr2: implement encoder homing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12
5fbb323b2978 libgsmfr2: implement encoder homing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 for (i = 0; i < 160; i++) {
5fbb323b2978 libgsmfr2: implement encoder homing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 if (pcm[i] != 0x0008)
5fbb323b2978 libgsmfr2: implement encoder homing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 return;
5fbb323b2978 libgsmfr2: implement encoder homing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 }
5fbb323b2978 libgsmfr2: implement encoder homing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 gsmfr_0610_reset(st);
5fbb323b2978 libgsmfr2: implement encoder homing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 }