FreeCalypso > hg > freecalypso-tools
annotate miscutil/fc-fr2tch.c @ 733:bed7981ac8ca
doc/Compal-FFS: update for IMEI found in OTP cells
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 28 Aug 2020 15:58:46 +0000 |
parents | 7eaa3307e5df |
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rev | line source |
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fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
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1 /* |
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fc-fr2tch utility written, added under miscutil
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2 * This utility converts a GSM 06.10 speech recording from the format that is |
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fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
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3 * commonly accepted as standard in the Unix/Linux world (libgsm format) into |
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fc-fr2tch utility written, added under miscutil
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4 * hex strings of TCH bits to be fed to the GSM 05.03 channel encoder by way |
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5 * of a TI Calypso GSM device, a FreeCalypso GSM firmware version with the |
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fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
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6 * TCH rerouting feature, and fc-shell's tch play command. |
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Mychaela Falconia <falcon@freecalypso.org>
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7 */ |
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Mychaela Falconia <falcon@freecalypso.org>
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8 |
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Mychaela Falconia <falcon@freecalypso.org>
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9 #include <sys/types.h> |
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10 #include <stdio.h> |
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11 #include <stdlib.h> |
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Mychaela Falconia <falcon@freecalypso.org>
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12 |
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Mychaela Falconia <falcon@freecalypso.org>
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13 main(argc, argv) |
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14 char **argv; |
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15 { |
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16 FILE *inf, *outf; |
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17 u_char libgsm_bytes[33], tidsp_bytes[33]; |
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18 int cc, i, gotsome = 0; |
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19 |
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20 if (argc != 3) { |
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21 fprintf(stderr, "usage: %s infile outfile\n", argv[0]); |
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22 exit(1); |
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23 } |
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24 inf = fopen(argv[1], "r"); |
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25 if (!inf) { |
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26 perror(argv[1]); |
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27 exit(1); |
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28 } |
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29 outf = fopen(argv[2], "w"); |
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30 if (!outf) { |
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31 perror(argv[2]); |
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32 exit(1); |
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33 } |
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34 for (;;) { |
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35 cc = fread(libgsm_bytes, 1, 33, inf); |
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36 if (cc < 33) |
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Mychaela Falconia <falcon@freecalypso.org>
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37 break; |
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Mychaela Falconia <falcon@freecalypso.org>
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38 if ((libgsm_bytes[0] & 0xF0) != 0xD0) { |
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Mychaela Falconia <falcon@freecalypso.org>
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39 invalid: fprintf(stderr, "error: %s is not in libgsm format\n", |
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40 argv[1]); |
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Mychaela Falconia <falcon@freecalypso.org>
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41 exit(1); |
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fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
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42 } |
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fc-fr2tch utility written, added under miscutil
Mychaela Falconia <falcon@freecalypso.org>
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43 gsm0610_libgsm_to_tidsp(libgsm_bytes, tidsp_bytes); |
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Mychaela Falconia <falcon@freecalypso.org>
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44 for (i = 0; i < 33; i++) |
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45 fprintf(outf, "%02X", tidsp_bytes[i]); |
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Mychaela Falconia <falcon@freecalypso.org>
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46 putc('\n', outf); |
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47 gotsome = 1; |
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48 } |
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Mychaela Falconia <falcon@freecalypso.org>
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49 fclose(outf); |
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50 if (cc) { |
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51 if (gotsome) |
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52 fprintf(stderr, |
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53 "warning: extra non-33 bytes at the end of %s\n", |
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54 argv[1]); |
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55 else |
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56 goto invalid; |
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57 } |
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58 exit(0); |
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59 } |