FreeCalypso > hg > gsm-codec-lib

annotate efrtest/dlcap-sync.c @ 468:4104b0390fab

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efrtest: new program gsmefr-dlcap-sync
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 13 May 2024 07:21:09 +0000
parents
children d80ccb3c3970
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468
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
1 /*
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
2 * This program reads a TCH/EFS downlink capture file from a FreeCalypso GSM MS
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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3 * that was produced in a session in which seqsync PCMA or PCMU input was fed
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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4 * into the test call from IP-PSTN side. It looks for EFR DHF followed by
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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5 * specific frame patterns indicating how the seqsync input was transcoded
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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6 * by the alien GSM network, and reports its findings.
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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7 */
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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8
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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9 #include <ctype.h>
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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10 #include <stdio.h>
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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11 #include <stdint.h>
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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12 #include <stdlib.h>
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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13 #include <string.h>
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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14 #include <strings.h>
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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15
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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16 static const uint8_t efr_dhf[31] = {
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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17 0xC0,0x85,0xEB,0x49,0x0F,0xAA,0xD6,0x03,0xE3,0xA1,0x86,0x07,0xB0,0xC4,0x2C,0x08,
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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18 0x04,0x80,0x55,0x80,0x00,0x00,0x00,0x00,0x03,0x6B,0x00,0x00,0x00,0x00,0x00,
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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19 };
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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20
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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21 static const uint8_t mr122_dhf[31] = {
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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22 0xC0,0x85,0x4D,0xB9,0x6A,0xAA,0xD6,0x00,0x00,0x00,0x00,0x01,0xB5,0x87,0xF6,0x68,
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Mychaela Falconia <falcon@freecalypso.org>
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23 0x37,0x94,0x09,0x00,0x41,0x58,0x54,0xF1,0x0F,0x6B,0x02,0x40,0x3C,0x7E,0xA0,
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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24 };
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Mychaela Falconia <falcon@freecalypso.org>
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25
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Mychaela Falconia <falcon@freecalypso.org>
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26 extern const uint8_t sync_from_pcma[320*31];
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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27 extern const uint8_t sync_from_pcmu[320*31];
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Mychaela Falconia <falcon@freecalypso.org>
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28
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Mychaela Falconia <falcon@freecalypso.org>
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29 static int
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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30 check_for_match(input, table)
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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31 const uint8_t *input, *table;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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32 {
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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33 unsigned n;
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Mychaela Falconia <falcon@freecalypso.org>
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34
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Mychaela Falconia <falcon@freecalypso.org>
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35 for (n = 0; n < 320; n++) {
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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36 if (!bcmp(input, table + n * 31, 31))
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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37 return n;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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38 }
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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39 return -1;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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40 }
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Mychaela Falconia <falcon@freecalypso.org>
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41
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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42 main(argc, argv)
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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43 char **argv;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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44 {
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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45 FILE *inf;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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46 char linebuf[128];
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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47 int lineno, rc;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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48 uint16_t status_words[3];
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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49 uint8_t tidsp_bytes[33], efr_bytes[31];
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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50 const uint8_t *match_table;
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Mychaela Falconia <falcon@freecalypso.org>
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51 int dhf_state;
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Mychaela Falconia <falcon@freecalypso.org>
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52 char *dhf_name;
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Mychaela Falconia <falcon@freecalypso.org>
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53
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Mychaela Falconia <falcon@freecalypso.org>
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54 if (argc != 3) {
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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55 usage: fprintf(stderr, "usage: %s dlcap-file alaw|ulaw\n", argv[0]);
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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56 exit(1);
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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57 }
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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58 inf = fopen(argv[1], "r");
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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59 if (!inf) {
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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60 perror(argv[1]);
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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61 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
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62 }
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Mychaela Falconia <falcon@freecalypso.org>
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63 if (!strcmp(argv[2], "alaw"))
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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64 match_table = sync_from_pcma;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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65 else if (!strcmp(argv[2], "ulaw"))
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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66 match_table = sync_from_pcmu;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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67 else
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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68 goto usage;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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69 dhf_state = 0;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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70 for (lineno = 1; fgets(linebuf, sizeof linebuf, inf); lineno++) {
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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71 /* support both old and new formats */
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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72 if (isxdigit(linebuf[0]) && isxdigit(linebuf[1]) &&
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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73 isxdigit(linebuf[2]) && isxdigit(linebuf[3])) {
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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74 rc = parse_dlcap_common(linebuf, status_words,
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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75 tidsp_bytes);
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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76 if (rc < 0) {
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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77 invalid: fprintf(stderr,
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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78 "error: %s is not in the expected format\n",
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Mychaela Falconia <falcon@freecalypso.org>
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79 argv[1]);
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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80 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
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81 }
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Mychaela Falconia <falcon@freecalypso.org>
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82 } else if (!strncmp(linebuf, "EFR ", 4)) {
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
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83 rc = parse_dlcap_common(linebuf + 4, status_words,
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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84 tidsp_bytes);
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Mychaela Falconia <falcon@freecalypso.org>
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85 if (rc < 0)
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Mychaela Falconia <falcon@freecalypso.org>
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86 goto invalid;
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Mychaela Falconia <falcon@freecalypso.org>
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87 if (linebuf[85] != ' ')
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Mychaela Falconia <falcon@freecalypso.org>
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88 goto invalid;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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89 if (!isdigit(linebuf[86]))
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Mychaela Falconia <falcon@freecalypso.org>
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90 goto invalid;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
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91 } else
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Mychaela Falconia <falcon@freecalypso.org>
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92 goto invalid;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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93 if ((status_words[0] & 0xC204) != 0xC000) {
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
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94 dhf_state = 0;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
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95 continue;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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96 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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97 efr_tidsp_to_std(tidsp_bytes, efr_bytes);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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98 if (!bcmp(efr_bytes, efr_dhf, 31)) {
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
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99 dhf_state = 1;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
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100 continue;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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101 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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102 if (!bcmp(efr_bytes, mr122_dhf, 31)) {
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
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103 dhf_state = 2;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
104 continue;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
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105 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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106 if (!dhf_state)
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
107 continue;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
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108 rc = check_for_match(efr_bytes, match_table);
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
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109 if (rc >= 0 && rc <= 159) {
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
110 printf(
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
111 "line %d: match to standard EFR with offset %d\n",
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
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112 lineno, rc);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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113 if (dhf_state == 2)
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
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114 printf("... but preceded by MR122 DHF!\n");
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
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115 } else if (rc >= 160 && rc <= 279) {
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
116 printf("line %d: match to AMR-EFR with offset %d\n",
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 lineno, rc - 160);
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118 if (dhf_state == 2)
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 printf("... but preceded by MR122 DHF!\n");
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120 } else if (rc >= 280 && rc <= 319) {
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 printf("line %d: match to AMR-EFR with offset %d\n",
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122 lineno, rc - 160);
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
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123 switch (dhf_state) {
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 case 1:
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 dhf_name = "EFR";
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 break;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 case 2:
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
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128 dhf_name = "MR122";
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 break;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 default:
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
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131 dhf_name = "???";
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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132 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 printf("previous frame was %s DHF\n", dhf_name);
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 }
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 dhf_state = 0;
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 }
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 exit(0);
4104b0390fab efrtest: new program gsmefr-dlcap-sync
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138 }