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annotate frtest/cod2std.c @ 247:56d3fbacd115

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dev: new program xmaxc-tables
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 12 May 2023 02:04:42 +0000
parents 6de564ef70d3
children 25649b3a83e9
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6de564ef70d3 frtest: new program gsmfr-cod2std
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1 /*
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2 * This program reads an FR codec parameters file in ETSI *.cod test sequence
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3 * format and converts it into classic libgsm format.
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4 */
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5
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6 #include <stdio.h>
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7 #include <stdint.h>
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8 #include <stdlib.h>
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9 #include <string.h>
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10 #include <strings.h>
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11 #include <gsm.h>
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12
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13 static void
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14 bytes_to_params(bytes, params, big_endian)
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15 uint8_t *bytes;
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16 gsm_signal *params;
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17 {
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18 uint8_t *sp;
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19 unsigned n;
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20 uint16_t val;
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21
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22 sp = bytes;
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23 for (n = 0; n < 76; n++) {
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24 if (big_endian)
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25 val = ((uint16_t) sp[0] << 8) | ((uint16_t) sp[1]);
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26 else
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27 val = ((uint16_t) sp[1] << 8) | ((uint16_t) sp[0]);
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28 params[n] = val;
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29 sp += 2;
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30 }
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31 }
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32
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33 main(argc, argv)
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34 char **argv;
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35 {
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36 char *infname, *outfname;
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37 FILE *inf, *outf;
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38 gsm dummy_state;
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39 int big_endian;
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40 unsigned frame_no;
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41 uint8_t input_bytes[76*2], frame[33];
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42 gsm_signal params[76];
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43 int cc;
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44
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45 if (argc == 3 && argv[1][0] != '-') {
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46 big_endian = 0;
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47 infname = argv[1];
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48 outfname = argv[2];
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49 } else if (argc == 4 && !strcmp(argv[1], "-b")) {
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50 big_endian = 1;
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51 infname = argv[2];
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52 outfname = argv[3];
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53 } else {
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54 fprintf(stderr, "usage: %s [-b] input.cod output.gsm\n",
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55 argv[0]);
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56 exit(1);
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57 }
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58 inf = fopen(infname, "r");
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59 if (!inf) {
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60 perror(infname);
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61 exit(1);
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62 }
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63 outf = fopen(outfname, "w");
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64 if (!outf) {
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65 perror(outfname);
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66 exit(1);
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67 }
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68 dummy_state = gsm_create();
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69 if (!dummy_state) {
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70 fprintf(stderr, "gsm_create() failed!\n");
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71 exit(1);
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72 }
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73 for (frame_no = 0; ; frame_no++) {
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74 cc = fread(input_bytes, 2, 76, inf);
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75 if (cc == 0)
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76 break;
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77 if (cc != 76) {
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78 fprintf(stderr, "error: short read from %s\n", infname);
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79 exit(1);
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80 }
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81 bytes_to_params(input_bytes, params, big_endian);
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82 gsm_implode(dummy_state, params, frame);
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83 fwrite(frame, 1, sizeof frame, outf);
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84 }
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85 fclose(outf);
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86 exit(0);
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87 }