FreeCalypso > hg > vband-misc

annotate amrdiff/readone-efr.c @ 11:1d22e3f81531

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ringing: generate FR-encoded and EFR-encoded "recordings" for GSM
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 07 Apr 2024 19:21:23 +0000
parents 5aeebdcbddad
children
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1 /*
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2 * This program reads a single frame (the first one) from an EFR *.cod file
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3 * and emits this frame of 244 bits as comma-separated ASCII. The intent is
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4 * to extract the DHF in a form convenient for inclusion in amrdiff source.
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5 */
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7 #include <stdio.h>
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8 #include <stdint.h>
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9 #include <stdlib.h>
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10 #include <string.h>
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11 #include <strings.h>
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12 #include "etsi.h"
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14 main(argc, argv)
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15 char **argv;
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16 {
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17 char *filename;
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18 int bigend, rc;
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19 FILE *inf;
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20 uint8_t efr_bits[ETSI_ENC_NWORDS];
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22 if (argc != 3) {
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23 usage: fprintf(stderr, "usage: %s efr-cod-file be|le\n", argv[0]);
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24 exit(1);
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25 }
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26 filename = argv[1];
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27 if (!strcmp(argv[2], "be"))
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28 bigend = 1;
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29 else if (!strcmp(argv[2], "le"))
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30 bigend = 0;
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31 else
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32 goto usage;
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33 inf = fopen(filename, "r");
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34 if (!inf) {
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35 perror(filename);
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36 exit(1);
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37 }
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38 rc = read_etsi_bits(inf, bigend, efr_bits, ETSI_ENC_NWORDS, filename);
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39 if (!rc) {
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40 fprintf(stderr, "error: %s is empty\n", filename);
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41 exit(1);
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42 }
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43 emit_frame244(efr_bits);
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44 exit(0);
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45 }