FreeCalypso > hg > freecalypso-tools

annotate tchtools/fc-vm2gsmx.c @ 1011:6d9b10633f10

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etmsync Pirelli IMEI retrieval: fix poor use of printf() Bug reported by Vadim Yanitskiy <fixeria@osmocom.org>: the construct where a static-allocated string was passed to printf() without any format arguments causes newer compilers to report a security problem. Given that formatted output is not needed here, just fixed string output, change printf() to fputs(), and direct the error message to stderr while at it.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 23 May 2024 17:29:57 +0000
parents 546bf873ccc8
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 Themyscira Wireless gsmx (extended-libgsm) format,
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4 * allowing further decoding into playable speech with gsmfr-decode.
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5 */
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6
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7 #include <sys/types.h>
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8 #include <stdio.h>
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9 #include <stdlib.h>
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10
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11 static char *infname;
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12 static FILE *inf, *outf;
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13 static u_long file_offset;
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14
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15 static const u_char bfi_marker[2] = {0xBF, 0x00};
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16
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17 static unsigned
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18 get_word()
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19 {
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20 u_char b[2];
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21 int i, c;
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22
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23 for (i = 0; i < 2; i++) {
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24 c = getc(inf);
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25 if (c < 0) {
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26 fprintf(stderr, "error: premature EOF in %s\n",
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27 infname);
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28 exit(1);
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29 }
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30 b[i] = c;
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31 file_offset++;
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32 }
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33 return((b[1] << 8) | b[0]);
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34 }
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35
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36 static void
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37 read_dsp_bytes(bytes)
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38 u_char *bytes;
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39 {
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40 int i, dp;
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41 unsigned word;
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42
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43 dp = 0;
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44 for (i = 0; i < 17; i++) {
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45 word = get_word();
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46 bytes[dp++] = word >> 8;
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47 bytes[dp++] = word;
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48 }
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49 }
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50
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51 static void
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52 convert_speech_sample()
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53 {
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54 u_char tidsp_bytes[34], libgsm_bytes[33];
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55
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56 read_dsp_bytes(tidsp_bytes);
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57 gsm0610_tidsp_to_libgsm(tidsp_bytes, libgsm_bytes);
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58 fwrite(libgsm_bytes, 1, 33, outf);
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59 }
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60
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61 main(argc, argv)
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62 char **argv;
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63 {
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64 unsigned first_word;
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65
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66 if (argc != 3) {
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67 fprintf(stderr, "usage: %s infile outfile\n", argv[0]);
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68 exit(1);
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69 }
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70 infname = argv[1];
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71 inf = fopen(infname, "r");
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72 if (!inf) {
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73 perror(infname);
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74 exit(1);
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75 }
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76 outf = fopen(argv[2], "w");
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77 if (!outf) {
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78 perror(argv[2]);
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79 exit(1);
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80 }
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81 for (;;) {
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82 first_word = get_word();
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83 if (first_word == 0xFBFF) /* SC_VM_END_MASK */
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84 break;
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85 if ((first_word & 0xB7FF) == 0x8400) {
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86 /* skip dummy header words 1 and 2 */
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87 get_word();
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88 get_word();
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89 /* process the actual speech or SID frame */
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90 convert_speech_sample();
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91 } else if (first_word == 0x0400) {
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92 /* it's a skipped frame, aka BFI */
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93 fwrite(bfi_marker, 1, 2, outf);
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94 } else {
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95 fprintf(stderr,
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96 "error in %s at offset 0x%lx: invalid frame header word 0x%04X\n",
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97 infname, file_offset, first_word);
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98 exit(1);
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99 }
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100 }
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101 fclose(outf);
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102 exit(0);
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103 }