FreeCalypso > hg > gsm-codec-lib
annotate frtest/cvt-dlcap.c @ 83:33714b36841a
libgsmefr: pow2.c compiles
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 26 Nov 2022 07:22:27 +0000 |
parents | 7960744ba19c |
children | b7ea278390eb |
rev | line source |
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19
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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1 /* |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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2 * This program reads a TCH downlink capture produced with FreeCalypso tools |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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3 * (fw version with TCH downlink sniffing feature and fc-shell tch record) |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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4 * and converts it into our extended-libgsm binary format, to be further |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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5 * fed to gsmfr-decode. |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
parents:
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6 */ |
7960744ba19c
frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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7 |
7960744ba19c
frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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8 #include <sys/types.h> |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
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9 #include <ctype.h> |
7960744ba19c
frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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10 #include <stdio.h> |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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11 #include <stdlib.h> |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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12 |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
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13 static const char bfi_marker[2] = {0xBF, 0x00}; |
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14 |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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15 static |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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16 decode_hex_digit(ch) |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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17 { |
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18 if (isdigit(ch)) |
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19 return(ch - '0'); |
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20 else if (isupper(ch)) |
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21 return(ch - 'A' + 10); |
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22 else |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
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23 return(ch - 'a' + 10); |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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24 } |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
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25 |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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26 main(argc, argv) |
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27 char **argv; |
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28 { |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
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29 FILE *inf, *outf; |
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30 char linebuf[128]; |
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Mychaela Falconia <falcon@freecalypso.org>
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31 int lineno; |
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32 char *cp; |
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Mychaela Falconia <falcon@freecalypso.org>
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33 int i; |
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Mychaela Falconia <falcon@freecalypso.org>
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34 u_short status_words[3]; |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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35 u_char tidsp_bytes[33], libgsm_bytes[33]; |
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36 |
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Mychaela Falconia <falcon@freecalypso.org>
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37 if (argc != 3) { |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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38 fprintf(stderr, "usage: %s infile outfile\n", argv[0]); |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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39 exit(1); |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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40 } |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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41 inf = fopen(argv[1], "r"); |
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Mychaela Falconia <falcon@freecalypso.org>
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42 if (!inf) { |
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Mychaela Falconia <falcon@freecalypso.org>
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43 perror(argv[1]); |
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Mychaela Falconia <falcon@freecalypso.org>
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44 exit(1); |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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45 } |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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46 outf = fopen(argv[2], "w"); |
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47 if (!outf) { |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
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48 perror(argv[2]); |
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49 exit(1); |
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50 } |
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51 for (lineno = 1; fgets(linebuf, sizeof linebuf, inf); lineno++) { |
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52 /* grok DSP status words */ |
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53 cp = linebuf; |
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54 for (i = 0; i < 3; i++) { |
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55 if (!isxdigit(cp[0]) || !isxdigit(cp[1]) || |
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56 !isxdigit(cp[2]) || !isxdigit(cp[3])) { |
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57 invalid: fprintf(stderr, |
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58 "error: %s is not in the expected format\n", |
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59 argv[1]); |
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60 exit(1); |
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61 } |
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62 status_words[i] = (decode_hex_digit(cp[0]) << 12) | |
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63 (decode_hex_digit(cp[1]) << 8) | |
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64 (decode_hex_digit(cp[2]) << 4) | |
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65 decode_hex_digit(cp[3]); |
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66 cp += 4; |
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67 if (*cp++ != ' ') |
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68 goto invalid; |
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69 } |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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70 /* read the frame bits */ |
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71 for (i = 0; i < 33; i++) { |
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72 if (!isxdigit(cp[0]) || !isxdigit(cp[1])) |
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73 goto invalid; |
7960744ba19c
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74 tidsp_bytes[i] = (decode_hex_digit(cp[0]) << 4) | |
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75 decode_hex_digit(cp[1]); |
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76 cp += 2; |
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77 } |
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78 /* bit 2 of status word 0 is BFI */ |
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79 if (status_words[0] & 0x0004) |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
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80 fwrite(bfi_marker, 1, 2, outf); |
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Mychaela Falconia <falcon@freecalypso.org>
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81 else { |
7960744ba19c
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Mychaela Falconia <falcon@freecalypso.org>
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82 gsm0610_tidsp_to_libgsm(tidsp_bytes, libgsm_bytes); |
7960744ba19c
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Mychaela Falconia <falcon@freecalypso.org>
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83 fwrite(libgsm_bytes, 1, 33, outf); |
7960744ba19c
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Mychaela Falconia <falcon@freecalypso.org>
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84 } |
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frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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85 } |
7960744ba19c
frtest: gsmfr-cvt-dlcap program based on fc-tch2fr
Mychaela Falconia <falcon@freecalypso.org>
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86 exit(0); |
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Mychaela Falconia <falcon@freecalypso.org>
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87 } |