FreeCalypso > hg > gsm-net-reveng

annotate trau-decode/parse-hex16.c @ 89:865b104ffbab

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trau-parse: AMR 4k75 CRC
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 05 Mar 2025 00:33:45 +0000
parents 5173515e1cc8
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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2 * This program reads a line-based text file in an ad hoc hex format
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3 * where each line represents a TRAU-16k frame. These TRAU-16k frames
75
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4 * are then decoded.
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5 */
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6
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7 #include <ctype.h>
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8 #include <stdio.h>
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9 #include <stdint.h>
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10 #include <stdlib.h>
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11 #include <string.h>
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12 #include <strings.h>
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13
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14 static int
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15 decode_hex_digit(c)
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16 {
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17 if (isdigit(c))
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18 return c - '0';
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19 else if (isupper(c))
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20 return c - 'A' + 10;
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21 else
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22 return c - 'a' + 10;
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23 }
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24
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25 static void
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26 hex2bits(hex, bits)
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27 char *hex;
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28 uint8_t *bits;
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29 {
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30 unsigned n, m, x;
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31
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32 for (n = 0; n < 80; n++) {
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33 x = decode_hex_digit(hex[n]);
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34 for (m = 8; m; m >>= 1) {
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35 if (x & m)
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36 *bits++ = 1;
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37 else
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38 *bits++ = 0;
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39 }
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40 }
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41 }
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42
84
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43 static unsigned
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44 bits_to_num(bits, nbits)
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45 uint8_t *bits;
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46 unsigned nbits;
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47 {
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48 unsigned accum;
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49 unsigned n;
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50
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51 accum = 0;
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52 for (n = 0; n < nbits; n++) {
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53 accum <<= 1;
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54 if (*bits)
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55 accum |= 1;
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56 bits++;
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57 }
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58 return accum;
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59 }
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60
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61 static void
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62 process_frame(frame_bits)
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63 uint8_t *frame_bits;
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64 {
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65 unsigned c1_5, c6_11;
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66
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67 printf(" C1-C5: %u%u%u%u%u", frame_bits[17], frame_bits[18],
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68 frame_bits[19], frame_bits[20], frame_bits[21]);
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69 c1_5 = bits_to_num(frame_bits + 17, 5);
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70 switch (c1_5) {
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71 case 0x02:
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72 fputs(" (FR UL)", stdout);
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73 break;
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74 case 0x1C:
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75 fputs(" (FR DL)", stdout);
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76 break;
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77 case 0x1A:
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78 fputs(" (EFR)", stdout);
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79 break;
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80 case 0x10:
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81 fputs(" (idle UL)", stdout);
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82 break;
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83 case 0x0E:
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84 fputs(" (idle DL)", stdout);
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85 break;
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86 case 0x08:
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87 fputs(" (data UL)", stdout);
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88 break;
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89 case 0x16:
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90 fputs(" (data DL)", stdout);
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91 break;
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92 case 0x09:
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93 fputs(" (HR data UL)", stdout);
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94 break;
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95 case 0x17:
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96 fputs(" (HR data DL)", stdout);
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97 break;
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98 case 0x14:
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99 fputs(" (D144 sync)", stdout);
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100 break;
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101 case 0x1F:
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102 fputs(" (E-TRAU)", stdout);
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103 break;
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104 case 0x06:
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105 fputs(" (AMR)", stdout);
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106 break;
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107 }
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108 putchar('\n');
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109 switch (c1_5) {
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110 case 0x02:
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111 case 0x1C:
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112 case 0x1A:
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113 case 0x10:
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114 case 0x0E:
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115 c6_11 = bits_to_num(frame_bits + 22, 6);
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116 printf(" C6-C11: %u\n", c6_11);
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117 printf(" C12=%u C13=%u C14=%u C15=%u\n", frame_bits[28],
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118 frame_bits[29], frame_bits[30], frame_bits[31]);
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119 print_fr_efr_frame(frame_bits, c1_5);
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120 printf(" C16=%u C17=%u C18=%u C19=%u C20=%u C21=%u\n",
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121 frame_bits[310], frame_bits[311], frame_bits[312],
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122 frame_bits[313], frame_bits[314], frame_bits[315]);
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123 printf(" T1=%u T2=%u T3=%u T4=%u\n", frame_bits[316],
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124 frame_bits[317], frame_bits[318], frame_bits[319]);
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125 break;
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126 case 0x08:
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127 case 0x09:
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128 case 0x16:
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129 case 0x17:
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130 case 0x14:
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diff changeset
131 print_data_frame(frame_bits);
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
132 break;
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
133 case 0x1F:
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
134 print_edata_frame(frame_bits);
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
135 break;
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
136 case 0x06:
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
137 print_amr_frame(frame_bits);
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
138 break;
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
139 default:
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
140 printf(" C6-C15: %u%u%u%u%u%u%u%u%u%u\n", frame_bits[22],
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
141 frame_bits[23], frame_bits[24], frame_bits[25],
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
142 frame_bits[26], frame_bits[27], frame_bits[28],
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
143 frame_bits[29], frame_bits[30], frame_bits[31]);
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
144 printf(" C16=%u C17=%u C18=%u C19=%u C20=%u C21=%u\n",
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
145 frame_bits[310], frame_bits[311], frame_bits[312],
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
146 frame_bits[313], frame_bits[314], frame_bits[315]);
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
147 printf(" T1=%u T2=%u T3=%u T4=%u\n", frame_bits[316],
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
148 frame_bits[317], frame_bits[318], frame_bits[319]);
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
149 }
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
150 }
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
151
75
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 static void
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 process_record(hex_frame, lineno)
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 char *hex_frame;
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 {
84
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
156 uint8_t frame_bits[320];
75
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157
84
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
158 printf("line %d:\n%s\n", lineno, hex_frame);
75
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 hex2bits(hex_frame, frame_bits);
84
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
160 process_frame(frame_bits);
75
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 }
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 static void
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 process_line(linebuf, filename, lineno)
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 char *linebuf, *filename;
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 {
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 char *cp, *np;
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 unsigned n;
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170 for (cp = linebuf; isspace(*cp); cp++)
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 ;
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 if (*cp == '\0' || *cp == '#')
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 return;
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 np = cp;
84
5173515e1cc8 trau-decode: new program trau-parse-hex
Mychaela Falconia <falcon@freecalypso.org>
parents: 75
diff changeset
175 for (n = 0; n < 80; n++) {
75
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 if (!isxdigit(*cp))
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 goto inv;
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178 cp++;
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 }
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 if (*cp) {
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181 if (!isspace(*cp))
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 goto inv;
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183 *cp++ = '\0';
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184 }
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185 while (isspace(*cp))
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186 cp++;
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187 if (*cp != '\0' && *cp != '#')
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
188 goto inv;
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
189 process_record(np, lineno);
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
190 return;
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
191
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
192 inv: fprintf(stderr, "%s line %d: invalid syntax\n", filename, lineno);
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
193 exit(1);
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
194 }
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
195
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
196 main(argc, argv)
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197 char **argv;
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
198 {
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
199 FILE *inf;
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
200 char linebuf[128];
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
201 int lineno;
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
202
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
203 if (argc != 2) {
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
204 fprintf(stderr, "usage: %s hex-file\n", argv[0]);
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
205 exit(1);
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
206 }
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
207 inf = fopen(argv[1], "r");
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
208 if (!inf) {
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
209 perror(argv[1]);
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
210 exit(1);
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
211 }
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
212 for (lineno = 1; fgets(linebuf, sizeof linebuf, inf); lineno++)
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
213 process_line(linebuf, argv[1], lineno);
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
214 exit(0);
b518ab15b518 trau-decode: new program trau-hr-dump-hex
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
215 }