FreeCalypso > hg > freecalypso-tools

annotate tchtools/fc-gsm2vm.c @ 995:74024eb17e04

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fc-loadtool help: improve language regarding 16 MiB flash chips In FC project history, 16 MiB flash originally meant Pirelli DP-L10. Then we got FCDEV3B with the same flash (our own design), but now we are discovering more Calypso devices that used such large flash, both late Calypso era (Sony Ericsson K2x0) as well as much earlier ones (FIC FLUID devices.txt file with 2004 dates, Leonardo+ rev 5). Hence we need to migrate to more generic or neutral language in associated documentation, without giving elevated status to specific examples that drove our early project history.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 03 Dec 2023 21:11:12 +0000
parents 8ddb16a37273
children
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f736f3ce8310 fc-gsm2vm utility written
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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 }