FreeCalypso > hg > freecalypso-tools

annotate tchtools/fc-efr2tch.c @ 1012:11391cb6bdc0

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patch from fixeria: doc change from SE K2x0 to K2xx Since their discovery in late 2022, Sony Ericsson K200 and K220 phones were collectively referred to as SE K2x0 in FreeCalypso documentation. However, now that SE K205 has been discovered as yet another member of the same family (same PCBA in different case), it makes more sense to refer to the whole family as SE K2xx.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 23 Sep 2024 12:23:20 +0000
parents 94890123a74f
children
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1 /*
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2 * This utility converts a GSM EFR speech recording from Themyscira Wireless
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3 * gsmx format into hex strings of TCH UL bits, to be fed to the TCH UL play
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4 * buffer in the Calypso DSP by way of a suitable FreeCalypso firmware version
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5 * and the special tch play command in fc-shell.
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6 */
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7
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8 #include <sys/types.h>
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9 #include <stdio.h>
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10 #include <stdlib.h>
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11
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12 main(argc, argv)
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13 char **argv;
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14 {
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15 FILE *inf, *outf;
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16 u_char efr_bytes[31], tidsp_bytes[33];
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17 int cc, i, gotsome = 0;
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18
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19 if (argc != 3) {
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20 fprintf(stderr, "usage: %s infile outfile\n", argv[0]);
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21 exit(1);
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22 }
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23 inf = fopen(argv[1], "r");
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24 if (!inf) {
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25 perror(argv[1]);
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26 exit(1);
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27 }
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28 outf = fopen(argv[2], "w");
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29 if (!outf) {
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30 perror(argv[2]);
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31 exit(1);
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32 }
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33 for (;;) {
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34 cc = fread(efr_bytes, 1, 31, inf);
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35 if (cc < 31)
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36 break;
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37 if ((efr_bytes[0] & 0xF0) != 0xC0) {
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38 invalid: fprintf(stderr,
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39 "error: %s is not in EFR codec format\n",
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40 argv[1]);
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41 exit(1);
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42 }
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43 efr_std_to_tidsp(efr_bytes, tidsp_bytes);
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44 for (i = 0; i < 33; i++)
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45 fprintf(outf, "%02X", tidsp_bytes[i]);
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46 putc('\n', outf);
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47 gotsome = 1;
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48 }
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49 fclose(outf);
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50 if (cc) {
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51 if (gotsome)
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52 fprintf(stderr,
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53 "warning: extra non-31 bytes at the end of %s\n",
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54 argv[1]);
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55 else
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56 goto invalid;
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57 }
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58 exit(0);
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59 }