FreeCalypso > hg > freecalypso-tools
annotate miscutil/fc-gsm2vm.c @ 253:6f078c4a5506
rvinterf and friends converted to use libserial
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Thu, 21 Sep 2017 23:45:05 +0000 |
parents | f736f3ce8310 |
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rev | line source |
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f736f3ce8310
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 |
f736f3ce8310
fc-gsm2vm utility written
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3 * commonly accepted as standard in the Unix/Linux world (libgsm format) into |
f736f3ce8310
fc-gsm2vm utility written
Mychaela Falconia <falcon@freecalypso.org>
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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 |
f736f3ce8310
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6 * invokes the latter. |
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7 */ |
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Mychaela Falconia <falcon@freecalypso.org>
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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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Mychaela Falconia <falcon@freecalypso.org>
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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); |
f736f3ce8310
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Mychaela Falconia <falcon@freecalypso.org>
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47 for (i = 0; i < 34; i += 2) { |
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Mychaela Falconia <falcon@freecalypso.org>
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48 arm_bytes[i] = tidsp_bytes[i+1]; |
f736f3ce8310
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Mychaela Falconia <falcon@freecalypso.org>
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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 } |