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annotate tchtools/fc-gsm2vm.c @ 964:a96cb97b66a2

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ringtools/imy: fix duplicate definition of tdma_durations[] The bug was reported by Vadim Yanitskiy <fixeria@osmocom.org>, although the present fix is slightly different from the contributed patch: because main.c doesn't need this tdma_durations[] array at all, let's simply remove the reference to this array from main.c rather than turn it into an extern. I no longer remember my original thought flow that resulted (by mistake) in tdma_durations[] being multiply defined in main.c and durations.c. My intent might have been to define all globals in main.c and have the reference in durations.c be an extern - and I missed that extern - but without clear memory, I have no certainty. In any case, having this data array defined in the same module that fills it (durations.c) is sensible, so let's make it the new way.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 31 Aug 2023 19:38:18 +0000
parents 8ddb16a37273
children
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1 /*
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2 * This utility converts a GSM 06.10 speech recording from the format that is
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3 * commonly accepted as standard in the Unix/Linux world (libgsm format) into
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4 * a voice memo file that can be uploaded into the FFS of a FreeCalypso device
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5 * and played with the audio_vm_play_start() API or the AT@VMP command that
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6 * invokes the latter.
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7 */
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8
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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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12
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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[34], arm_bytes[34];
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18 static u_char header_bytes[6] = {0x00, 0xC4, 0x00, 0x00, 0x00, 0x00};
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19 static u_char endmarker[2] = {0xFF, 0xFB};
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20 int cc, i, gotsome = 0;
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21
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22 if (argc != 3) {
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23 fprintf(stderr, "usage: %s infile outfile\n", argv[0]);
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24 exit(1);
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25 }
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26 inf = fopen(argv[1], "r");
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27 if (!inf) {
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28 perror(argv[1]);
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29 exit(1);
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30 }
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31 outf = fopen(argv[2], "w");
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32 if (!outf) {
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33 perror(argv[2]);
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34 exit(1);
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35 }
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36 tidsp_bytes[33] = 0;
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37 for (;;) {
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38 cc = fread(libgsm_bytes, 1, 33, inf);
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39 if (cc < 33)
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40 break;
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41 if ((libgsm_bytes[0] & 0xF0) != 0xD0) {
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42 invalid: fprintf(stderr, "error: %s is not in libgsm format\n",
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43 argv[1]);
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44 exit(1);
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45 }
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46 gsm0610_libgsm_to_tidsp(libgsm_bytes, tidsp_bytes);
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47 for (i = 0; i < 34; i += 2) {
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48 arm_bytes[i] = tidsp_bytes[i+1];
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49 arm_bytes[i+1] = tidsp_bytes[i];
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50 }
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51 fwrite(header_bytes, 1, 6, outf);
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52 fwrite(arm_bytes, 1, 34, outf);
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53 gotsome = 1;
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54 }
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55 fwrite(endmarker, 1, 2, outf);
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56 fclose(outf);
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57 if (cc) {
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58 if (gotsome)
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59 fprintf(stderr,
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60 "warning: extra non-33 bytes at the end of %s\n",
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61 argv[1]);
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62 else
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63 goto invalid;
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64 }
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65 exit(0);
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66 }