FreeCalypso > hg > vband-misc

annotate efr-sid/mk-sid-test2.c @ 50:0db059f4632d

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efr-sid OS#6538: more sensible 2-bit errors
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 12 Aug 2024 02:49:28 +0000
parents 2daadef1e70d
children
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1 /*
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2 * This program generates a set of EFR codec frames based on a single input
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3 * frame (in ETSI cod format) that is expected to be a perfect SID.
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4 * The output frame set is intended to serve as a unit test for the
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5 * bit-counting SID classification function; it will contain different
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6 * extents of bit clearing to produce valid SID, invalid SID and non-SID
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7 * speech classifications.
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8 */
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9
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10 #include <stdio.h>
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11 #include <stdint.h>
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12 #include <stdlib.h>
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13 #include <string.h>
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14 #include <strings.h>
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15 #include <gsm_efr.h>
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16 #include "etsi.h"
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17
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18 #define TOTAL_BITS 244
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19
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20 extern const uint8_t SID_codeword_bit_idx[95];
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21
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22 static uint8_t input_frame[ETSI_ENC_NWORDS];
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23 static FILE *outf;
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24
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25 static void
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26 read_input_file(filename)
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27 char *filename;
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28 {
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29 FILE *inf;
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31 inf = fopen(filename, "r");
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32 if (!inf) {
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33 perror(filename);
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34 exit(1);
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35 }
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36 read_etsi_bits(inf, 0, input_frame, ETSI_ENC_NWORDS, filename);
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37 fclose(inf);
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38 }
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39
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40 static void
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41 emit_out_frame(bits)
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42 uint8_t *bits;
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43 {
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44 uint8_t packed_frame[EFR_RTP_FRAME_LEN];
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46 bits2frame(bits, packed_frame, "input", 0);
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47 fwrite(packed_frame, 1, EFR_RTP_FRAME_LEN, outf);
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48 }
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50 static void
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51 emit_1bit_errors()
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52 {
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53 uint8_t frame_bits[TOTAL_BITS];
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54 unsigned n;
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55
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56 for (n = 0; n < 95; n++) {
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57 bcopy(input_frame, frame_bits, TOTAL_BITS);
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58 frame_bits[SID_codeword_bit_idx[n]] = 0;
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59 emit_out_frame(frame_bits);
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60 }
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61 }
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63 static void
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64 emit_2bit_errors()
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65 {
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66 uint8_t frame_bits[TOTAL_BITS];
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67 unsigned n;
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68
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69 for (n = 0; n < 48; n++) {
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70 bcopy(input_frame, frame_bits, TOTAL_BITS);
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71 frame_bits[SID_codeword_bit_idx[n]] = 0;
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72 frame_bits[SID_codeword_bit_idx[n + 47]] = 0;
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73 emit_out_frame(frame_bits);
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74 }
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75 }
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76
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77 static void
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78 emit_15bit_errors()
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79 {
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80 uint8_t frame_bits[TOTAL_BITS];
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81 unsigned i, j;
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82
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83 for (i = 0; i < 11; i++) {
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84 bcopy(input_frame, frame_bits, TOTAL_BITS);
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85 for (j = 0; j < 15; j++)
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86 frame_bits[SID_codeword_bit_idx[j * 6 + i]] = 0;
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87 emit_out_frame(frame_bits);
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88 }
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89 }
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90
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91 static void
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92 emit_16bit_errors()
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93 {
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94 uint8_t frame_bits[TOTAL_BITS];
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95 unsigned i, j;
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96
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97 for (i = 0; i < 20; i++) {
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98 bcopy(input_frame, frame_bits, TOTAL_BITS);
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99 for (j = 0; j < 16; j++)
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100 frame_bits[SID_codeword_bit_idx[j * 5 + i]] = 0;
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101 emit_out_frame(frame_bits);
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102 }
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103 }
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104
43
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105 main(argc, argv)
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106 char **argv;
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107 {
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108 if (argc != 3) {
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109 fprintf(stderr, "usage: %s input.cod output.gsmx\n", argv[0]);
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110 exit(1);
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111 }
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112 read_input_file(argv[1]);
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113 outf = fopen(argv[2], "w");
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114 if (!outf) {
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115 perror(argv[2]);
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116 exit(1);
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117 }
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118 /* emit the perfect, error-free SID first */
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119 emit_out_frame(input_frame);
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120 /* now different bit-error possibilities */
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121 emit_1bit_errors();
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122 emit_2bit_errors();
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Mychaela Falconia <falcon@freecalypso.org>
parents: 43
diff changeset
123 emit_15bit_errors();
3e632126e099 efr-sid: generate efr-sid-test2.gsmx for OS#6538
Mychaela Falconia <falcon@freecalypso.org>
parents: 43
diff changeset
124 emit_16bit_errors();
3e632126e099 efr-sid: generate efr-sid-test2.gsmx for OS#6538
Mychaela Falconia <falcon@freecalypso.org>
parents: 43
diff changeset
125 /* all done */
43
8bfc517fda3b efr-sid: hack created
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 fclose(outf);
8bfc517fda3b efr-sid: hack created
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 exit(0);
8bfc517fda3b efr-sid: hack created
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 }