FreeCalypso > hg > gsm-codec-lib

annotate efrtest/dec-parse.c @ 131:615f144b52c6

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gsmefr-dec-parse utility written
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 11 Dec 2022 04:31:17 +0000
parents efrtest/cod-parse.c@a5ffec18e4cd
children 0fa0cd251a31
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1 /*
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2 * This program reads an EFR *.dec file in ETSI test sequence format
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3 * (test input to the decoder) and converts it into human-readable format,
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4 * similar to what one would get from our gsmrec-dump utility.
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5 */
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6
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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 "../libgsmefr/gsm_efr.h"
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13
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14 #define ETSI_DEC_NWORDS 247
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16 static int
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17 read_input(inf, bitvec, filename_for_errs)
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18 FILE *inf;
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19 uint8_t *bitvec;
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20 char *filename_for_errs;
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21 {
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22 uint8_t file_bytes[ETSI_DEC_NWORDS * 2], *sp;
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23 int cc;
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24 unsigned n;
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25
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26 cc = fread(file_bytes, 2, ETSI_DEC_NWORDS, inf);
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27 if (cc == 0)
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28 return 0;
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29 if (cc != ETSI_DEC_NWORDS) {
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30 fprintf(stderr, "error: short read from %s\n",
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31 filename_for_errs);
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32 exit(1);
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33 }
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34 sp = file_bytes;
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35 for (n = 0; n < ETSI_DEC_NWORDS; n++) {
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36 if (sp[1]) {
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37 fprintf(stderr,
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38 "error in %s: non-zero in what should be LE upper byte\n",
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39 filename_for_errs);
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40 exit(1);
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41 }
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42 bitvec[n] = sp[0];
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43 sp += 2;
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44 }
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45 return 1;
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46 }
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47
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48 static void
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49 bits2frame(input_bits, frame, filename_for_errs, frame_no)
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50 uint8_t *input_bits, *frame;
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51 char *filename_for_errs;
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52 unsigned frame_no;
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53 {
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54 uint8_t bits[248], *sp, *dp;
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55 unsigned nb, byte, mask;
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56
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57 bits[0] = 1;
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58 bits[1] = 1;
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59 bits[2] = 0;
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60 bits[3] = 0;
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61 bcopy(input_bits, bits + 4, 244);
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62 sp = bits;
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63 dp = frame;
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64 for (nb = 0; nb < EFR_RTP_FRAME_LEN; nb++) {
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65 byte = 0;
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66 for (mask = 0x80; mask; mask >>= 1) {
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67 if (*sp > 1) {
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68 fprintf(stderr,
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69 "error in %s frame #%u: data bit > 1\n",
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70 filename_for_errs, frame_no);
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71 exit(1);
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72 }
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73 if (*sp)
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74 byte |= mask;
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75 sp++;
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76 }
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77 *dp++ = byte;
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78 }
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79 }
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80
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81 main(argc, argv)
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82 char **argv;
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83 {
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84 FILE *inf;
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85 unsigned frame_no;
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86 uint8_t input_bits[ETSI_DEC_NWORDS], frame[EFR_RTP_FRAME_LEN];
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87 int16_t params[EFR_NUM_PARAMS];
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88 int rc, i, j, n;
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89
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90 if (argc != 2) {
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91 fprintf(stderr, "usage: %s file.dec\n", argv[0]);
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92 exit(1);
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93 }
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94 inf = fopen(argv[1], "r");
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95 if (!inf) {
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96 perror(argv[1]);
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97 exit(1);
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98 }
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99 for (frame_no = 0; ; frame_no++) {
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100 rc = read_input(inf, input_bits, argv[1]);
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101 if (!rc)
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102 break;
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103 bits2frame(input_bits + 1, frame, argv[1], frame_no);
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104 printf("#%u: BFI=%u SID=%u TAF=%u LPC", frame_no,
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105 input_bits[0], input_bits[245], input_bits[246]);
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106 EFR_frame2params(frame, params);
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107 n = 0;
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108 for (i = 0; i < 5; i++)
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109 printf(" %d", params[n++]);
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110 putchar('\n');
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111 for (i = 0; i < 4; i++) {
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112 putchar(' ');
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113 for (j = 0; j < 13; j++)
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114 printf(" %d", params[n++]);
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115 putchar('\n');
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116 }
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117 }
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118 }