FreeCalypso > hg > gsm-net-reveng

annotate d144/edata-input-decomp.c @ 56:b32b644b7d96

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d144/nokia-tcsm2-atrau.bin: captured A-TRAU output from Nokia TCSM2, fed with ul-input from Ater
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 25 Sep 2024 07:42:04 +0000
parents 8deebf9c410a
children
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f80e64139670 trau-ul-decomp program written
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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8deebf9c410a d144: "decompile" binary input format into ASCII
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2 * This program reads an E-data compiled binary file (the kind intended
8deebf9c410a d144: "decompile" binary input format into ASCII
Mychaela Falconia <falcon@freecalypso.org>
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3 * as input to itt-ater-16) and converts it into ASCII form. The ASCII
8deebf9c410a d144: "decompile" binary input format into ASCII
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4 * output from this program is not in the same format as input to
8deebf9c410a d144: "decompile" binary input format into ASCII
Mychaela Falconia <falcon@freecalypso.org>
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5 * edata-input-compile, but it is a more compact ASCII-based format
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6 * that will be useful for unit tests on the future sw implementation
8deebf9c410a d144: "decompile" binary input format into ASCII
Mychaela Falconia <falcon@freecalypso.org>
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7 * of RAA' function.
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f80e64139670 trau-ul-decomp program written
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8 */
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9
f80e64139670 trau-ul-decomp program written
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10 #include <stdio.h>
f80e64139670 trau-ul-decomp program written
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11 #include <stdint.h>
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12 #include <stdlib.h>
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13
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14 main(argc, argv)
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15 char **argv;
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16 {
f80e64139670 trau-ul-decomp program written
Mychaela Falconia <falcon@freecalypso.org>
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17 FILE *binf, *outf;
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18 uint8_t frame[38];
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19 int rc;
8deebf9c410a d144: "decompile" binary input format into ASCII
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20 unsigned n;
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f80e64139670 trau-ul-decomp program written
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21
f80e64139670 trau-ul-decomp program written
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22 if (argc < 2 || argc > 3) {
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23 fprintf(stderr, "usage: %s input.bin [output.asc]\n", argv[0]);
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f80e64139670 trau-ul-decomp program written
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24 exit(1);
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25 }
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26 binf = fopen(argv[1], "r");
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27 if (!binf) {
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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 if (argc > 2) {
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32 outf = fopen(argv[2], "w");
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33 if (!outf) {
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34 perror(argv[2]);
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35 exit(1);
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36 }
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37 } else
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38 outf = stdout;
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39 for (;;) {
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40 rc = fread(frame, 1, 38, binf);
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41 if (!rc)
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42 break;
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43 if (rc != 38) {
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44 inv_input: fprintf(stderr, "error: %s is not in expected format\n",
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45 argv[1]);
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46 exit(1);
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47 }
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Mychaela Falconia <falcon@freecalypso.org>
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48 if (frame[0] != 0xD4)
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f80e64139670 trau-ul-decomp program written
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49 goto inv_input;
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50 fprintf(outf, "%u%u ", (frame[1] & 2) >> 1, frame[1] & 1);
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51 for (n = 0; n < 36; n++)
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52 fprintf(outf, "%02x", frame[n+2]);
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53 putc('\n', outf);
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54 }
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55 exit(0);
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56 }