FreeCalypso > hg > gsm-codec-lib

annotate efrtest/dlcap-gsmx.c @ 547:f9535c1fbf70

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
efrtest: new program gsmefr-decode-tw5
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 04 Oct 2024 20:17:36 +0000
parents 6e39fc0134da
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
140
5efc377326da gsmefr-dlcap-gsmx: EFR counterpart to gsmfr-cvt-dlcap
Mychaela Falconia <falcon@freecalypso.org>
parents: 139
diff changeset
2 * This program reads a TCH/EFS downlink capture produced with FreeCalypso tools
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * (fw version with TCH downlink sniffing feature and fc-shell tch record)
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * and converts it into our extended-libgsm binary format, to be further
163
3bbb16015a79 gsmefr-dlcap-gsmx: logic change for updated understanding of DSP flags
Mychaela Falconia <falcon@freecalypso.org>
parents: 140
diff changeset
5 * fed to gsmefr-decode or other tools.
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 */
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 #include <ctype.h>
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 #include <stdio.h>
139
be57e06bed84 factor out common part of gsmfr-cvt-dlcap, in prep for EFR
Mychaela Falconia <falcon@freecalypso.org>
parents: 137
diff changeset
10 #include <stdint.h>
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 #include <stdlib.h>
137
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
12 #include <string.h>
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
13 #include <strings.h>
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 main(argc, argv)
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 char **argv;
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 {
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 FILE *inf, *outf;
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 char linebuf[128];
137
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
20 int lineno, rc;
139
be57e06bed84 factor out common part of gsmfr-cvt-dlcap, in prep for EFR
Mychaela Falconia <falcon@freecalypso.org>
parents: 137
diff changeset
21 uint16_t status_words[3];
140
5efc377326da gsmefr-dlcap-gsmx: EFR counterpart to gsmfr-cvt-dlcap
Mychaela Falconia <falcon@freecalypso.org>
parents: 139
diff changeset
22 uint8_t tidsp_bytes[33], efr_bytes[31], bfi[2];
137
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
23 unsigned fn_mod_104;
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 if (argc != 3) {
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 fprintf(stderr, "usage: %s infile outfile\n", argv[0]);
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 exit(1);
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 }
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 inf = fopen(argv[1], "r");
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 if (!inf) {
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 perror(argv[1]);
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 exit(1);
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 }
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 outf = fopen(argv[2], "w");
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 if (!outf) {
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 perror(argv[2]);
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 exit(1);
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 }
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 for (lineno = 1; fgets(linebuf, sizeof linebuf, inf); lineno++) {
137
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
40 /* support both old and new formats */
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
41 if (isxdigit(linebuf[0]) && isxdigit(linebuf[1]) &&
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
42 isxdigit(linebuf[2]) && isxdigit(linebuf[3])) {
139
be57e06bed84 factor out common part of gsmfr-cvt-dlcap, in prep for EFR
Mychaela Falconia <falcon@freecalypso.org>
parents: 137
diff changeset
43 rc = parse_dlcap_common(linebuf, status_words,
137
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
44 tidsp_bytes);
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
45 if (rc < 0) {
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 invalid: fprintf(stderr,
137
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
47 "error: %s is not in the expected format\n",
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
48 argv[1]);
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 exit(1);
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 }
137
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
51 fn_mod_104 = 0; /* won't have TAF */
140
5efc377326da gsmefr-dlcap-gsmx: EFR counterpart to gsmfr-cvt-dlcap
Mychaela Falconia <falcon@freecalypso.org>
parents: 139
diff changeset
52 } else if (!strncmp(linebuf, "EFR ", 4)) {
5efc377326da gsmefr-dlcap-gsmx: EFR counterpart to gsmfr-cvt-dlcap
Mychaela Falconia <falcon@freecalypso.org>
parents: 139
diff changeset
53 rc = parse_dlcap_common(linebuf + 4, status_words,
137
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
54 tidsp_bytes);
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
55 if (rc < 0)
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
56 goto invalid;
140
5efc377326da gsmefr-dlcap-gsmx: EFR counterpart to gsmfr-cvt-dlcap
Mychaela Falconia <falcon@freecalypso.org>
parents: 139
diff changeset
57 if (linebuf[85] != ' ')
137
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
58 goto invalid;
140
5efc377326da gsmefr-dlcap-gsmx: EFR counterpart to gsmfr-cvt-dlcap
Mychaela Falconia <falcon@freecalypso.org>
parents: 139
diff changeset
59 if (!isdigit(linebuf[86]))
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 goto invalid;
140
5efc377326da gsmefr-dlcap-gsmx: EFR counterpart to gsmfr-cvt-dlcap
Mychaela Falconia <falcon@freecalypso.org>
parents: 139
diff changeset
61 fn_mod_104 = strtoul(linebuf + 86, 0, 10);
137
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
62 } else
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
63 goto invalid;
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
64 /*
179
6e39fc0134da [e]frtest/dlcap-gsmx.c: fix comment pointing to description of DSP flags
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
65 * DSP flags are documented in the TCH-tap-modes article
6e39fc0134da [e]frtest/dlcap-gsmx.c: fix comment pointing to description of DSP flags
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
66 * in freecalypso-docs.
137
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
67 */
163
3bbb16015a79 gsmefr-dlcap-gsmx: logic change for updated understanding of DSP flags
Mychaela Falconia <falcon@freecalypso.org>
parents: 140
diff changeset
68 if ((status_words[0] & 0xC204) == 0xC000) {
3bbb16015a79 gsmefr-dlcap-gsmx: logic change for updated understanding of DSP flags
Mychaela Falconia <falcon@freecalypso.org>
parents: 140
diff changeset
69 efr_tidsp_to_std(tidsp_bytes, efr_bytes);
3bbb16015a79 gsmefr-dlcap-gsmx: logic change for updated understanding of DSP flags
Mychaela Falconia <falcon@freecalypso.org>
parents: 140
diff changeset
70 fwrite(efr_bytes, 1, 31, outf);
3bbb16015a79 gsmefr-dlcap-gsmx: logic change for updated understanding of DSP flags
Mychaela Falconia <falcon@freecalypso.org>
parents: 140
diff changeset
71 } else {
137
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
72 bfi[0] = 0xBF;
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
73 bfi[1] = fn_mod_104 == 60;
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
74 fwrite(bfi, 1, 2, outf);
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 }
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 }
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 exit(0);
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 }