FreeCalypso > hg > freecalypso-tools

annotate miscutil/fc-vm2hex.c @ 721:059649902c7f

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librftab: added support for adc-cal tables
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 25 Aug 2020 07:15:02 +0000
parents a72bbc3ace09
children
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170
a72bbc3ace09 fc-vm2hex utility written
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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Mychaela Falconia <falcon@freecalypso.org>
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2 * This utility converts the old-fashioned (non-AMR) voice memo files
a72bbc3ace09 fc-vm2hex utility written
Mychaela Falconia <falcon@freecalypso.org>
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3 * read out of FFS into hex strings that can be analyzed by a human
a72bbc3ace09 fc-vm2hex utility written
Mychaela Falconia <falcon@freecalypso.org>
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4 * or further fed to fc-tch2fr.
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5 */
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6
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7 #include <sys/types.h>
a72bbc3ace09 fc-vm2hex utility written
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8 #include <stdio.h>
a72bbc3ace09 fc-vm2hex utility written
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9 #include <stdlib.h>
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10
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11 char *infname;
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12 FILE *inf, *outf;
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13
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14 static unsigned
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15 get_word()
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16 {
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17 u_char b[2];
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18 int i, c;
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19
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20 for (i = 0; i < 2; i++) {
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21 c = getc(inf);
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22 if (c < 0) {
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23 fprintf(stderr, "error: premature EOF in %s\n",
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24 infname);
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25 exit(1);
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26 }
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27 b[i] = c;
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28 }
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29 return((b[1] << 8) | b[0]);
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30 }
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31
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32 convert_speech_sample()
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33 {
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34 u_char bytes[34];
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35 int i, dp;
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36 unsigned word;
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37
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38 dp = 0;
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39 for (i = 0; i < 17; i++) {
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40 word = get_word();
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41 bytes[dp++] = word >> 8;
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42 bytes[dp++] = word;
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43 }
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44 for (i = 0; i < 33; i++)
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45 fprintf(outf, "%02X", bytes[i]);
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46 }
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47
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48 main(argc, argv)
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49 char **argv;
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50 {
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51 unsigned first_word;
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52
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53 if (argc < 2 || argc > 3) {
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54 fprintf(stderr, "usage: %s infile [outfile]\n", argv[0]);
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55 exit(1);
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56 }
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57 infname = argv[1];
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58 inf = fopen(infname, "r");
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59 if (!inf) {
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60 perror(infname);
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61 exit(1);
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62 }
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63 if (argc > 2) {
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64 outf = fopen(argv[2], "w");
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65 if (!outf) {
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66 perror(argv[2]);
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67 exit(1);
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68 }
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69 } else
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70 outf = stdout;
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71
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72 for (;;) {
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73 first_word = get_word();
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74 if (first_word == 0xFBFF) /* SC_VM_END_MASK */
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75 break;
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76 fprintf(outf, "%04X", first_word);
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77 if (first_word & 0x8000) { /* B_VM_SPEECH */
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78 fprintf(outf, " %04X", get_word());
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79 fprintf(outf, " %04X", get_word());
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80 putc(' ', outf);
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81 convert_speech_sample();
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82 }
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83 putc('\n', outf);
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84 }
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85 exit(0);
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86 }