FreeCalypso > hg > freecalypso-tools
annotate miscutil/fc-gsm2vm.c @ 416:30f6d1c32c6f
doc/Flash-boot-defect article removed (no longer relevant)
This article is no longer relevant because the issue in question
only affected one (1) defective FCDEV3B board which was not
and never will be sold.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 26 Oct 2018 07:11:08 +0000 |
parents | f736f3ce8310 |
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fc-gsm2vm utility written
Mychaela Falconia <falcon@freecalypso.org>
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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 |
f736f3ce8310
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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 |
f736f3ce8310
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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 |
f736f3ce8310
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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 } |
f736f3ce8310
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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) { |
f736f3ce8310
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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 } |
f736f3ce8310
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Mychaela Falconia <falcon@freecalypso.org>
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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]; |
f736f3ce8310
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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 } |