FreeCalypso > hg > freecalypso-tools

annotate miscutil/fc-fr2tch.c @ 407:19e5a3e2f9c0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
fcup-settime: moved time() retrieval a little closer to the output A fundamental problem with all simple time transfer tools is that there is always some delay between the time retrieval on the source system and that transmitted time being set on the destination, and the resulting time on the destination system is off by that delay amount. This delay cannot be fully eliminated when working in a simple environment like ours, but we should make our best effort to minimize it. In the present case, moving the atinterf_init() call before the time() retrieval should make a teensy-tiny improvement.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 11 Aug 2018 21:52:17 +0000
parents 7eaa3307e5df
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
5
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This utility converts a GSM 06.10 speech recording from the format that is
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * commonly accepted as standard in the Unix/Linux world (libgsm format) into
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * hex strings of TCH bits to be fed to the GSM 05.03 channel encoder by way
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * of a TI Calypso GSM device, a FreeCalypso GSM firmware version with the
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * TCH rerouting feature, and fc-shell's tch play command.
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 */
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 #include <sys/types.h>
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 #include <stdio.h>
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 #include <stdlib.h>
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 main(argc, argv)
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 char **argv;
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 {
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 FILE *inf, *outf;
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 u_char libgsm_bytes[33], tidsp_bytes[33];
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 int cc, i, gotsome = 0;
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 if (argc != 3) {
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 fprintf(stderr, "usage: %s infile outfile\n", argv[0]);
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 exit(1);
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 }
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 inf = fopen(argv[1], "r");
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 if (!inf) {
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 perror(argv[1]);
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 exit(1);
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 }
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 outf = fopen(argv[2], "w");
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 if (!outf) {
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 perror(argv[2]);
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 exit(1);
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 }
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 for (;;) {
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 cc = fread(libgsm_bytes, 1, 33, inf);
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 if (cc < 33)
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 break;
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 if ((libgsm_bytes[0] & 0xF0) != 0xD0) {
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 invalid: fprintf(stderr, "error: %s is not in libgsm format\n",
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 argv[1]);
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 exit(1);
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 }
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 gsm0610_libgsm_to_tidsp(libgsm_bytes, tidsp_bytes);
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 for (i = 0; i < 33; i++)
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 fprintf(outf, "%02X", tidsp_bytes[i]);
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 putc('\n', outf);
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 gotsome = 1;
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 }
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 fclose(outf);
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 if (cc) {
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 if (gotsome)
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 fprintf(stderr,
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 "warning: extra non-33 bytes at the end of %s\n",
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 argv[1]);
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 else
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 goto invalid;
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 }
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 exit(0);
7eaa3307e5df fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 }