FreeCalypso > hg > gsm-net-reveng

annotate trau-decode/parse-amr.c @ 86:8b7ba6f4a85e

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trau-parse: AMR 6k70 CRC
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 04 Mar 2025 22:44:37 +0000
parents 53f6a04dc472
children 9cd468f6872c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Here we implement parsing/decoding of AMR frames as in 3GPP TS 48.060
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3 * section 5.5.1.2, striving to decode and display as much as we can.
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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 "osmo_bits.h"
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12
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13 /*
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14 * AMR TRAU parity (same as EFR)
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15 *
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16 * g(x) = x^3 + x^1 + 1
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17 */
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18 static const struct osmo_crc8gen_code gsm0860_amr_crc3 = {
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19 .bits = 3,
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20 .poly = 0x3,
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21 .init = 0x0,
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22 .remainder = 0x7,
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23 };
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24
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25 static int saved_mode, saved_mode_valid;
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26
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27 static char *fclass_names[4] = {
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28 "No_Speech", "Speech_Bad", "Speech_Degraded", "Speech_Good"
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29 };
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30
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31 static char *nospch_class_names[8] = {
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32 "No_Data", "invalid", "invalid", "invalid",
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33 "Sid_Bad", "Sid_Update", "Onset", "Sid_First"
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34 };
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35
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36 static unsigned
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37 bits_to_num(bits, nbits)
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38 ubit_t *bits;
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39 unsigned nbits;
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40 {
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41 unsigned accum;
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42 unsigned n;
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43
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44 accum = 0;
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45 for (n = 0; n < nbits; n++) {
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46 accum <<= 1;
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47 if (*bits)
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48 accum |= 1;
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49 bits++;
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50 }
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51 return accum;
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52 }
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53
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54 static void
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55 decode_mode_0(c_bits, d_bits)
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56 ubit_t *c_bits, *d_bits;
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57 {
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58 }
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59
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60 static void
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61 decode_mode_1(c_bits, d_bits)
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62 ubit_t *c_bits, *d_bits;
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63 {
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64 }
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65
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66 static void
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67 decode_mode_2(c_bits, d_bits)
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68 ubit_t *c_bits, *d_bits;
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69 {
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70 }
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71
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72 static void
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73 decode_mode_3(c_bits, d_bits)
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74 ubit_t *c_bits, *d_bits;
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75 {
86
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76 ubit_t crc_collect[57];
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77 int crc1, crc2, crc3, crc4;
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78
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79 bcopy(c_bits, crc_collect, 25);
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80 bcopy(d_bits + 37, crc_collect + 25, 17);
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81 crc_collect[42] = d_bits[56];
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82 crc_collect[43] = d_bits[60];
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83 bcopy(d_bits + 63, crc_collect + 44, 8);
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84 bcopy(d_bits + 85, crc_collect + 52, 5);
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85 crc1 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 57,
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86 d_bits + 92);
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87 bcopy(d_bits + 95, crc_collect, 4);
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88 bcopy(d_bits + 113, crc_collect + 4, 5);
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89 crc2 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 9,
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90 d_bits + 120);
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91 bcopy(d_bits + 123, crc_collect, 8);
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92 bcopy(d_bits + 145, crc_collect + 8, 5);
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93 crc3 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 13,
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94 d_bits + 152);
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95 bcopy(d_bits + 155, crc_collect, 4);
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96 bcopy(d_bits + 173, crc_collect + 4, 5);
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97 crc4 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 9,
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98 d_bits + 180);
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99 printf(" CRC %s %s %s %s\n",
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100 crc1 ? "bad" : "good", crc2 ? "bad" : "good",
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101 crc3 ? "bad" : "good", crc4 ? "bad" : "good");
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102 }
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103
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104 static void
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105 decode_mode_4(c_bits, d_bits)
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106 ubit_t *c_bits, *d_bits;
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107 {
83
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108 ubit_t crc_collect[59];
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109 int crc1, crc2, crc3, crc4;
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110
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111 bcopy(c_bits, crc_collect, 25);
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112 bcopy(d_bits + 34, crc_collect + 25, 20);
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113 bcopy(d_bits + 55, crc_collect + 45, 3);
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114 bcopy(d_bits + 60, crc_collect + 48, 6);
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115 bcopy(d_bits + 85, crc_collect + 54, 2);
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116 bcopy(d_bits + 88, crc_collect + 56, 3);
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117 crc1 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 59,
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118 d_bits + 92);
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119 bcopy(d_bits + 95, crc_collect, 3);
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120 bcopy(d_bits + 117, crc_collect + 3, 2);
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121 bcopy(d_bits + 120, crc_collect + 5, 3);
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122 crc2 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 8,
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123 d_bits + 124);
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124 bcopy(d_bits + 127, crc_collect, 6);
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125 bcopy(d_bits + 152, crc_collect + 6, 2);
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126 bcopy(d_bits + 155, crc_collect + 8, 3);
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127 crc3 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 11,
5e2ecfd45fc3 trau-parse: AMR 7k40 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 82
diff changeset
128 d_bits + 159);
5e2ecfd45fc3 trau-parse: AMR 7k40 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 82
diff changeset
129 bcopy(d_bits + 162, crc_collect, 3);
5e2ecfd45fc3 trau-parse: AMR 7k40 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 82
diff changeset
130 bcopy(d_bits + 184, crc_collect + 3, 2);
5e2ecfd45fc3 trau-parse: AMR 7k40 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 82
diff changeset
131 bcopy(d_bits + 187, crc_collect + 5, 2);
5e2ecfd45fc3 trau-parse: AMR 7k40 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 82
diff changeset
132 crc4 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 7,
5e2ecfd45fc3 trau-parse: AMR 7k40 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 82
diff changeset
133 d_bits + 191);
5e2ecfd45fc3 trau-parse: AMR 7k40 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 82
diff changeset
134 printf(" CRC %s %s %s %s\n",
5e2ecfd45fc3 trau-parse: AMR 7k40 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 82
diff changeset
135 crc1 ? "bad" : "good", crc2 ? "bad" : "good",
5e2ecfd45fc3 trau-parse: AMR 7k40 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 82
diff changeset
136 crc3 ? "bad" : "good", crc4 ? "bad" : "good");
79
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
137 }
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
138
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
139 static void
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
140 decode_mode_5(c_bits, d_bits)
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
141 ubit_t *c_bits, *d_bits;
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
142 {
82
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
143 ubit_t crc_collect[64];
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
144 int crc1, crc2, crc3, crc4;
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
145
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
146 bcopy(c_bits, crc_collect, 25);
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
147 bcopy(d_bits + 31, crc_collect + 25, 35);
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
148 bcopy(d_bits + 83, crc_collect + 60, 2);
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
149 crc_collect[62] = d_bits[87];
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
150 crc_collect[63] = d_bits[90];
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
151 crc1 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 64,
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
152 d_bits + 92);
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
153 bcopy(d_bits + 95, crc_collect, 4);
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
154 bcopy(d_bits + 118, crc_collect + 4, 2);
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
155 bcopy(d_bits + 122, crc_collect + 6, 4);
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
156 crc2 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 10,
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
157 d_bits + 127);
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
158 bcopy(d_bits + 130, crc_collect, 8);
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
159 bcopy(d_bits + 155, crc_collect + 8, 2);
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
160 bcopy(d_bits + 159, crc_collect + 10, 4);
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
161 crc3 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 14,
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
162 d_bits + 164);
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
163 bcopy(d_bits + 167, crc_collect, 4);
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
164 bcopy(d_bits + 190, crc_collect + 4, 2);
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
165 bcopy(d_bits + 194, crc_collect + 6, 4);
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
166 crc4 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 10,
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
167 d_bits + 199);
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
168 printf(" CRC %s %s %s %s\n",
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
169 crc1 ? "bad" : "good", crc2 ? "bad" : "good",
31a8d34b71ed trau-parse: AMR 7k95 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 81
diff changeset
170 crc3 ? "bad" : "good", crc4 ? "bad" : "good");
79
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
171 }
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
172
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
173 static void
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
174 decode_mode_6(c_bits, d_bits)
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
175 ubit_t *c_bits, *d_bits;
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
176 {
81
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
177 ubit_t crc_collect[82];
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
178 int crc1, crc2, crc3, crc4;
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
179
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
180 bcopy(c_bits, crc_collect, 25);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
181 bcopy(d_bits, crc_collect + 25, 45);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
182 bcopy(d_bits + 46, crc_collect + 70, 8);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
183 bcopy(d_bits + 85, crc_collect + 78, 2);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
184 bcopy(d_bits + 88, crc_collect + 80, 2);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
185 crc1 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 82,
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
186 d_bits + 92);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
187 bcopy(d_bits + 95, crc_collect, 4);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
188 bcopy(d_bits + 131, crc_collect + 4, 2);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
189 bcopy(d_bits + 134, crc_collect + 6, 2);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
190 crc2 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 8,
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
191 d_bits + 138);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
192 bcopy(d_bits + 141, crc_collect, 8);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
193 bcopy(d_bits + 180, crc_collect + 8, 2);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
194 bcopy(d_bits + 183, crc_collect + 10, 2);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
195 crc3 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 12,
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
196 d_bits + 187);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
197 bcopy(d_bits + 190, crc_collect, 4);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
198 bcopy(d_bits + 226, crc_collect + 4, 2);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
199 bcopy(d_bits + 229, crc_collect + 6, 2);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
200 bcopy(d_bits + 233, crc_collect + 8, 20);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
201 crc4 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 28,
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
202 d_bits + 253);
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
203 printf(" CRC %s %s %s %s\n",
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
204 crc1 ? "bad" : "good", crc2 ? "bad" : "good",
9eff2af191d5 trau-parse: AMR 10k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 80
diff changeset
205 crc3 ? "bad" : "good", crc4 ? "bad" : "good");
79
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
206 }
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
207
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
208 static void
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
209 decode_mode_7(c_bits, d_bits)
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
210 ubit_t *c_bits, *d_bits;
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
211 {
80
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
212 ubit_t crc_collect[69];
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
213 int crc1, crc2, crc3, crc4;
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
214
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
215 bcopy(c_bits, crc_collect, 25);
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
216 bcopy(d_bits, crc_collect + 25, 29);
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
217 bcopy(d_bits + 38, crc_collect + 54, 12);
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
218 bcopy(d_bits + 86, crc_collect + 66, 3);
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
219 crc1 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 69,
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
220 d_bits + 91);
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
221 bcopy(d_bits + 94, crc_collect, 9);
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
222 bcopy(d_bits + 139, crc_collect + 9, 3);
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
223 crc2 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 12,
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
224 d_bits + 144);
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
225 bcopy(d_bits + 147, crc_collect, 12);
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
226 bcopy(d_bits + 195, crc_collect + 12, 3);
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
227 crc3 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 15,
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
228 d_bits + 200);
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
229 bcopy(d_bits + 203, crc_collect, 5);
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
230 bcopy(d_bits + 209, crc_collect + 5, 3);
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
231 bcopy(d_bits + 248, crc_collect + 8, 3);
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
232 crc4 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 11,
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
233 d_bits + 253);
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
234 printf(" CRC %s %s %s %s\n",
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
235 crc1 ? "bad" : "good", crc2 ? "bad" : "good",
58dfdb2fc6df trau-parse: AMR 12k2 CRC
Mychaela Falconia <falcon@freecalypso.org>
parents: 79
diff changeset
236 crc3 ? "bad" : "good", crc4 ? "bad" : "good");
79
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
237 }
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
238
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
239 static void (*per_mode_decode[8])() = {
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
240 decode_mode_0,
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
241 decode_mode_1,
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
242 decode_mode_2,
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
243 decode_mode_3,
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
244 decode_mode_4,
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
245 decode_mode_5,
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
246 decode_mode_6,
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
247 decode_mode_7
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
248 };
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
249
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
250 static void
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Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
251 decode_speech_frame(c_bits, d_bits, cm_hdr)
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
252 ubit_t *c_bits, *d_bits;
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
253 unsigned cm_hdr;
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
254 {
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
255 unsigned mode;
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
256
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Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
257 if (c_bits[11]) {
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
258 if (!saved_mode_valid) {
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
259 printf(" Mode unknown, cannot decode\n");
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
260 return;
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
261 }
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
262 mode = saved_mode;
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
263 saved_mode_valid = 0;
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
264 } else {
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
265 mode = cm_hdr;
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
266 saved_mode = mode;
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
267 saved_mode_valid = 1;
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
268 }
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
269 printf(" Decoding per speech mode %u\n", mode);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
270 per_mode_decode[mode](c_bits, d_bits);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
271 }
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
272
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
273 static void
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
274 decode_nospeech_frame(c_bits, d_bits)
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
275 ubit_t *c_bits, *d_bits;
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
276 {
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
277 ubit_t crc_collect[25 + 61];
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
278 int crc_stat;
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
279
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
280 printf(" No_Spch_Class=%u%u%u (%s) CMI=%u CMR=%u\n",
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
281 d_bits[31], d_bits[32], d_bits[33],
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
282 nospch_class_names[bits_to_num(d_bits + 31, 3)],
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
283 bits_to_num(d_bits + 34, 3), bits_to_num(d_bits + 37, 3));
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
284 printf(" PAB=%u TAE=%u%u\n", d_bits[40], d_bits[41], d_bits[42]);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
285 bcopy(c_bits, crc_collect, 25);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
286 bcopy(d_bits + 31, crc_collect + 25, 61);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
287 crc_stat = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect,
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
288 25 + 61, d_bits + 92);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
289 printf(" CRC %s\n", crc_stat ? "bad" : "good");
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
290 if (crc_stat) {
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
291 saved_mode_valid = 0;
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
292 } else {
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
293 saved_mode = bits_to_num(d_bits + 34, 3);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
294 saved_mode_valid = 1;
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
295 }
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
296 }
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
297
78
00fd38c7c8fe trau-decode: factor out parse-amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 77
diff changeset
298 void
00fd38c7c8fe trau-decode: factor out parse-amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 77
diff changeset
299 print_amr_frame(frame_bits)
00fd38c7c8fe trau-decode: factor out parse-amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 77
diff changeset
300 uint8_t *frame_bits;
0
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
301 {
79
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
302 ubit_t c_bits[25], d_bits[256];
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
303 uint8_t fclass, cm_hdr;
0
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
304
79
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
305 bcopy(frame_bits + 17, c_bits, 15);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
306 bcopy(frame_bits + 33, c_bits + 15, 10);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
307 bcopy(frame_bits + 43, d_bits, 5);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
308 bcopy(frame_bits + 49, d_bits + 5, 15);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
309 bcopy(frame_bits + 65, d_bits + 20, 15);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
310 bcopy(frame_bits + 81, d_bits + 35, 15);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
311 bcopy(frame_bits + 97, d_bits + 50, 15);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
312 bcopy(frame_bits + 113, d_bits + 65, 15);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
313 bcopy(frame_bits + 129, d_bits + 80, 15);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
314 bcopy(frame_bits + 145, d_bits + 95, 15);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
315 bcopy(frame_bits + 161, d_bits + 110, 15);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
316 bcopy(frame_bits + 177, d_bits + 125, 15);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
317 bcopy(frame_bits + 193, d_bits + 140, 15);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
318 bcopy(frame_bits + 209, d_bits + 155, 15);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
319 bcopy(frame_bits + 225, d_bits + 170, 15);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
320 bcopy(frame_bits + 241, d_bits + 185, 15);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
321 bcopy(frame_bits + 257, d_bits + 200, 15);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
322 bcopy(frame_bits + 273, d_bits + 215, 15);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
323 bcopy(frame_bits + 289, d_bits + 230, 15);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
324 bcopy(frame_bits + 305, d_bits + 245, 11);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
325
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
326 printf(" C6-C11: %u\n", bits_to_num(c_bits + 5, 6));
85
53f6a04dc472 trau-parse AMR: C13 is UFE
Mychaela Falconia <falcon@freecalypso.org>
parents: 83
diff changeset
327 printf(" RIF=%u UFE=%u Config_Prot=%u%u%u Msg_No=%u%u\n",
79
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
328 c_bits[11], c_bits[12], c_bits[13], c_bits[14], c_bits[15],
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
329 c_bits[16], c_bits[17]);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
330 fclass = bits_to_num(c_bits + 20, 2);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
331 cm_hdr = bits_to_num(c_bits + 22, 3);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
332 printf(" DTXd=%u TFOE=%u FClass=%u%u (%s) %s=%u\n",
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
333 c_bits[18], c_bits[19], c_bits[20], c_bits[21],
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
334 fclass_names[fclass], c_bits[11] ? "CMR" : "CMI", cm_hdr);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
335 if (fclass)
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
336 decode_speech_frame(c_bits, d_bits, cm_hdr);
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
337 else
8c1f20e845a1 trau-parse: more thorough AMR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
338 decode_nospeech_frame(c_bits, d_bits);
78
00fd38c7c8fe trau-decode: factor out parse-amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 77
diff changeset
339 printf(" T1=%u T2=%u T3=%u T4=%u\n", frame_bits[316],
00fd38c7c8fe trau-decode: factor out parse-amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 77
diff changeset
340 frame_bits[317], frame_bits[318], frame_bits[319]);
0
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
341 }