FreeCalypso > hg > gsm-codec-lib

annotate efrtest/dlcap-dec.c @ 489:f036e1de5b05

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
libgsmhr1: starting with API definition
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 15 Jun 2024 04:51:30 +0000
parents 5f23cb3f0f8d
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)
164
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
4 * and feeds it to our libgsmefr decoder, making our best attempt to
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
5 * replicate the processing steps that must be performed by the original DSP.
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
6 *
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
7 * The output format is "robe" (raw big-endian).
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 */
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 #include <ctype.h>
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 #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
12 #include <stdint.h>
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 #include <stdlib.h>
137
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
14 #include <string.h>
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
15 #include <strings.h>
164
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
16 #include "../libgsmefr/gsm_efr.h"
19
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 main(argc, argv)
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 char **argv;
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 {
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 FILE *inf, *outf;
164
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
22 struct EFR_decoder_state *state;
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 char linebuf[128];
137
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
24 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
25 uint16_t status_words[3];
164
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
26 uint8_t tidsp_bytes[33], frame[EFR_RTP_FRAME_LEN];
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
27 int16_t params[EFR_NUM_PARAMS], pcm[160];
137
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
28 unsigned fn_mod_104;
164
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
29 int bfi, taf, sid;
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 if (argc != 3) {
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 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
33 exit(1);
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 }
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 inf = fopen(argv[1], "r");
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 if (!inf) {
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 perror(argv[1]);
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 exit(1);
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 }
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 outf = fopen(argv[2], "w");
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 if (!outf) {
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 perror(argv[2]);
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 exit(1);
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 }
164
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
45 state = EFR_decoder_create();
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
46 if (!state) {
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
47 perror("EFR_decoder_create()");
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
48 exit(1);
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
49 }
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 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
51 /* 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
52 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
53 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
54 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
55 tidsp_bytes);
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
56 if (rc < 0) {
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 invalid: fprintf(stderr,
137
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
58 "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
59 argv[1]);
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 exit(1);
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 }
137
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
62 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
63 } 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
64 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
65 tidsp_bytes);
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
66 if (rc < 0)
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
67 goto invalid;
140
5efc377326da gsmefr-dlcap-gsmx: EFR counterpart to gsmfr-cvt-dlcap
Mychaela Falconia <falcon@freecalypso.org>
parents: 139
diff changeset
68 if (linebuf[85] != ' ')
137
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
69 goto invalid;
140
5efc377326da gsmefr-dlcap-gsmx: EFR counterpart to gsmfr-cvt-dlcap
Mychaela Falconia <falcon@freecalypso.org>
parents: 139
diff changeset
70 if (!isdigit(linebuf[86]))
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 goto invalid;
140
5efc377326da gsmefr-dlcap-gsmx: EFR counterpart to gsmfr-cvt-dlcap
Mychaela Falconia <falcon@freecalypso.org>
parents: 139
diff changeset
72 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
73 } else
b7ea278390eb gsmfr-cvt-dlcap: support new FC TCH DL recording format
Mychaela Falconia <falcon@freecalypso.org>
parents: 19
diff changeset
74 goto invalid;
164
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
75 /* processing, hoping to replicate what the DSP does */
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
76 efr_tidsp_to_std(tidsp_bytes, frame);
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
77 EFR_frame2params(frame, params);
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
78 bfi = (status_words[0] & 0x0204) != 0;
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
79 sid = (status_words[0] & 0x0018) >> 3;
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
80 taf = fn_mod_104 == 60;
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
81 EFR_decode_params(state, params, bfi, sid, taf, pcm);
5f23cb3f0f8d gsmefr-dlcap-dec program written
Mychaela Falconia <falcon@freecalypso.org>
parents: 163
diff changeset
82 write_pcm_to_robe(outf, pcm);
19
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83 }
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 exit(0);
7960744ba19c frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 }