FreeCalypso > hg > freecalypso-tools

annotate uptools/libcoding/gsmtime.c @ 796:2c0eebf1d00a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
doc/Host-tools-overview: add fc-simint and fc-simtool
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 19 Mar 2021 06:02:36 +0000
parents f40530e2d48d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
334
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This library module implements decoding of GSM timestamps.
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 */
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 #include <sys/types.h>
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 #include <stdio.h>
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 gsm_timestamp_decode(inbuf, outbuf)
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 u_char *inbuf;
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 char *outbuf;
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 {
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 u_char rev[7];
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 int i, d1, d2, tzsign;
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 for (i = 0; i < 7; i++) {
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 d1 = inbuf[i] & 0xF;
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 d2 = inbuf[i] >> 4;
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 rev[i] = (d1 << 4) | d2;
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 }
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 if (rev[6] & 0x80) {
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 rev[6] &= 0x7F;
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 tzsign = '-';
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 } else
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 tzsign = '+';
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 sprintf(outbuf, "%02X/%02X/%02X,%02X:%02X:%02X%c%02X", rev[0], rev[1],
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 rev[2], rev[3], rev[4], rev[5], tzsign, rev[6]);
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 }