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annotate tchtools/fc-vm2hex.c @ 981:f21798eb13cf

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fc-loadtool: implement flash ppb-* commands
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 02 Dec 2023 05:46:00 +0000
parents 5041bcb8140f
children
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1 /*
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2 * This utility converts old-fashioned (non-AMR) TCS211 voice memo files
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3 * read out of FFS into hex strings that can be analyzed by a human,
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4 * either directly or with the aid of gsmfr-dlcap-parse utility from
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5 * Themyscira Wireless GSM codec libraries & utilities package.
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6 */
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7
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8 #include <sys/types.h>
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9 #include <stdio.h>
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10 #include <stdlib.h>
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11
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12 char *infname;
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13 FILE *inf, *outf;
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14
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15 static unsigned
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16 get_word()
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17 {
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18 u_char b[2];
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19 int i, c;
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20
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21 for (i = 0; i < 2; i++) {
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22 c = getc(inf);
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23 if (c < 0) {
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24 fprintf(stderr, "error: premature EOF in %s\n",
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25 infname);
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26 exit(1);
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27 }
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28 b[i] = c;
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29 }
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30 return((b[1] << 8) | b[0]);
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31 }
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32
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33 convert_speech_sample()
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34 {
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35 u_char bytes[34];
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36 int i, dp;
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37 unsigned word;
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38
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39 dp = 0;
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40 for (i = 0; i < 17; i++) {
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41 word = get_word();
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42 bytes[dp++] = word >> 8;
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43 bytes[dp++] = word;
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44 }
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45 for (i = 0; i < 33; i++)
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46 fprintf(outf, "%02X", bytes[i]);
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47 }
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48
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49 main(argc, argv)
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50 char **argv;
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51 {
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52 unsigned first_word;
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53
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54 if (argc < 2 || argc > 3) {
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55 fprintf(stderr, "usage: %s infile [outfile]\n", argv[0]);
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56 exit(1);
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57 }
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58 infname = argv[1];
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59 inf = fopen(infname, "r");
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60 if (!inf) {
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61 perror(infname);
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62 exit(1);
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63 }
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64 if (argc > 2) {
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65 outf = fopen(argv[2], "w");
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66 if (!outf) {
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67 perror(argv[2]);
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68 exit(1);
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69 }
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70 } else
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71 outf = stdout;
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72
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73 for (;;) {
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74 first_word = get_word();
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75 if (first_word == 0xFBFF) /* SC_VM_END_MASK */
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76 break;
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77 fprintf(outf, "%04X", first_word);
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78 if (first_word & 0x8000) { /* B_VM_SPEECH */
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79 fprintf(outf, " %04X", get_word());
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80 fprintf(outf, " %04X", get_word());
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81 putc(' ', outf);
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82 convert_speech_sample();
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83 }
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84 putc('\n', outf);
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85 }
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86 exit(0);
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87 }