FreeCalypso > hg > gsm-net-reveng

annotate trau-decode/parse-new16.c @ 109:382a80f91149

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trau-parse-n: add support for 125 us advance
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 22 Dec 2025 05:25:15 +0000
parents f2009a354444
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2 * This program reads a 64 kbit/s timeslot recording file, examines one
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3 * of the four 16 kbit/s subslots (selected), looks for GSM 08.60 TRAU
107
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4 * frames, and dumps whatever it finds. The present version is a new one,
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5 * put together for the purpose of reverse-engineering Abis output from
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6 * Nokia BTS, which exhibits more complex behaviour than what our original
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7 * trau-parse program can analyze properly.
0
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8 */
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9
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10 #include <sys/types.h>
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11 #include <sys/file.h>
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12 #include <sys/stat.h>
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13 #include <stdio.h>
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14 #include <stdint.h>
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15 #include <stdlib.h>
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16 #include <string.h>
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17 #include <strings.h>
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18
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19 static uint8_t *filebuf;
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20 static unsigned total_size;
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21
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22 static enum {
46
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23 NOT_D144,
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24 D144_SYNC,
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25 D144_EDATA,
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26 } d144_state;
0
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27
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28 static void
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29 read_ts_file(filename, subslot_arg)
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30 char *filename, *subslot_arg;
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31 {
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32 FILE *inf;
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33 struct stat st;
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34 int subslot, right_shift;
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35 unsigned n;
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36 uint8_t *dp;
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37 int b;
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38
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39 inf = fopen(filename, "r");
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40 if (!inf) {
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41 perror(filename);
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42 exit(1);
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43 }
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44 fstat(fileno(inf), &st);
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45 if (!S_ISREG(st.st_mode)) {
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46 fprintf(stderr, "error: %s is not a regular file\n", filename);
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47 exit(1);
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48 }
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49 total_size = st.st_size;
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50 if (total_size < 160) {
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51 fprintf(stderr, "error: %s is too short\n", filename);
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52 exit(1);
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53 }
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54 filebuf = malloc(total_size);
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55 if (!filebuf) {
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56 perror("malloc of file size");
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57 exit(1);
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58 }
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59 subslot = atoi(subslot_arg);
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60 if (subslot < 0 || subslot > 3) {
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61 fprintf(stderr, "error: invalid subslot argument\n");
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62 exit(1);
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63 }
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64 right_shift = (3 - subslot) * 2;
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65 dp = filebuf;
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66 for (n = 0; n < total_size; n++) {
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67 b = getc(inf);
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68 if (b < 0) {
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69 fprintf(stderr,
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70 "error: getc() returned EOF contrary to st_size\n");
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71 exit(1);
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72 }
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73 *dp++ = (b >> right_shift) & 3;
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74 }
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75 fclose(inf);
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76 }
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77
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78 static int
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79 check_sync(pos)
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80 unsigned pos;
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81 {
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82 uint8_t *cand = filebuf + pos;
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83 unsigned n;
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84
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85 for (n = 0; n < 8; n++) {
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86 if (cand[n])
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87 return 0;
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88 }
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89 if (!(cand[8] & 2))
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90 return 0;
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91 if (cand[8] == 3 && cand[9] == 3 && cand[10] == 3 &&
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92 (d144_state == D144_SYNC || d144_state == D144_EDATA))
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93 return 1;
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94 for (n = 2; n < 20; n++) {
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95 if (!(cand[n * 8] & 2))
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96 return 0;
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97 }
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98 return 1;
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99 }
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100
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101 static void
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102 unpack_dibits(in_frame_2bit, frame_bits)
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103 uint8_t *in_frame_2bit, *frame_bits;
0
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104 {
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105 int i, inb;
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106 uint8_t *op;
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107
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108 op = frame_bits;
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109 for (i = 0; i < 160; i++) {
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110 inb = in_frame_2bit[i];
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111 if (inb & 2)
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112 *op++ = 1;
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113 else
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114 *op++ = 0;
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115 if (inb & 1)
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116 *op++ = 1;
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117 else
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118 *op++ = 0;
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119 }
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120 }
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121
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122 static unsigned
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123 bits_to_num(bits, nbits)
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124 uint8_t *bits;
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125 unsigned nbits;
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126 {
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127 unsigned accum;
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128 unsigned n;
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129
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130 accum = 0;
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131 for (n = 0; n < nbits; n++) {
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132 accum <<= 1;
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133 if (*bits)
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134 accum |= 1;
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135 bits++;
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136 }
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137 return accum;
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138 }
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139
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140 static void
107
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
141 dump_raw_nibbles(dibits, num_dibits)
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
142 uint8_t *dibits;
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
143 unsigned num_dibits;
45
59d1d15b6f7e trau-parse: add -r option for raw frame output
Mychaela Falconia <falcon@freecalypso.org>
parents: 43
diff changeset
144 {
107
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
145 uint8_t *sp = dibits;
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
146 unsigned remain = num_dibits;
45
59d1d15b6f7e trau-parse: add -r option for raw frame output
Mychaela Falconia <falcon@freecalypso.org>
parents: 43
diff changeset
147
107
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
148 if (remain >= 2) {
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
149 while (remain >= 2) {
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
150 printf("%x", (sp[0] << 2) | sp[1]);
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
151 sp += 2;
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
152 remain -= 2;
45
59d1d15b6f7e trau-parse: add -r option for raw frame output
Mychaela Falconia <falcon@freecalypso.org>
parents: 43
diff changeset
153 }
107
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
154 putchar('\n');
45
59d1d15b6f7e trau-parse: add -r option for raw frame output
Mychaela Falconia <falcon@freecalypso.org>
parents: 43
diff changeset
155 }
107
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
156 if (remain)
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
157 printf("dribble %u%u\n", (*sp & 2) >> 1, (*sp & 1) >> 0);
45
59d1d15b6f7e trau-parse: add -r option for raw frame output
Mychaela Falconia <falcon@freecalypso.org>
parents: 43
diff changeset
158 }
59d1d15b6f7e trau-parse: add -r option for raw frame output
Mychaela Falconia <falcon@freecalypso.org>
parents: 43
diff changeset
159
107
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
160 static int
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
161 process_frame(pos)
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
162 unsigned pos;
0
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 {
107
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
164 uint8_t *frame_2b = filebuf + pos;
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
165 uint8_t frame_bits[320];
0
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 unsigned c1_5, c6_11;
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167
107
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
168 printf("Frame at 0x%x:\n", pos);
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
169 dump_raw_nibbles(frame_2b, 160);
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
170 unpack_dibits(frame_2b, frame_bits);
0
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 printf(" C1-C5: %u%u%u%u%u", frame_bits[17], frame_bits[18],
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 frame_bits[19], frame_bits[20], frame_bits[21]);
1
b0dcd48a1c8a trau-parse: initial bugfixes
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
173 c1_5 = bits_to_num(frame_bits + 17, 5);
0
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 switch (c1_5) {
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 case 0x02:
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 fputs(" (FR UL)", stdout);
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 break;
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178 case 0x1C:
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 fputs(" (FR DL)", stdout);
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 break;
1
b0dcd48a1c8a trau-parse: initial bugfixes
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
181 case 0x1A:
0
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 fputs(" (EFR)", stdout);
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183 break;
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184 case 0x10:
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185 fputs(" (idle UL)", stdout);
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186 break;
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187 case 0x0E:
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
188 fputs(" (idle DL)", stdout);
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
189 break;
38
d7674c80426c trau-parse: add decoding of data frames
Mychaela Falconia <falcon@freecalypso.org>
parents: 10
diff changeset
190 case 0x08:
d7674c80426c trau-parse: add decoding of data frames
Mychaela Falconia <falcon@freecalypso.org>
parents: 10
diff changeset
191 fputs(" (data UL)", stdout);
d7674c80426c trau-parse: add decoding of data frames
Mychaela Falconia <falcon@freecalypso.org>
parents: 10
diff changeset
192 break;
d7674c80426c trau-parse: add decoding of data frames
Mychaela Falconia <falcon@freecalypso.org>
parents: 10
diff changeset
193 case 0x16:
d7674c80426c trau-parse: add decoding of data frames
Mychaela Falconia <falcon@freecalypso.org>
parents: 10
diff changeset
194 fputs(" (data DL)", stdout);
d7674c80426c trau-parse: add decoding of data frames
Mychaela Falconia <falcon@freecalypso.org>
parents: 10
diff changeset
195 break;
43
95acde708ce2 trau-parse: add knowledge of HR-data frame types
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
196 case 0x09:
95acde708ce2 trau-parse: add knowledge of HR-data frame types
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
197 fputs(" (HR data UL)", stdout);
95acde708ce2 trau-parse: add knowledge of HR-data frame types
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
198 break;
95acde708ce2 trau-parse: add knowledge of HR-data frame types
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
199 case 0x17:
95acde708ce2 trau-parse: add knowledge of HR-data frame types
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
200 fputs(" (HR data DL)", stdout);
95acde708ce2 trau-parse: add knowledge of HR-data frame types
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
201 break;
38
d7674c80426c trau-parse: add decoding of data frames
Mychaela Falconia <falcon@freecalypso.org>
parents: 10
diff changeset
202 case 0x14:
d7674c80426c trau-parse: add decoding of data frames
Mychaela Falconia <falcon@freecalypso.org>
parents: 10
diff changeset
203 fputs(" (D144 sync)", stdout);
d7674c80426c trau-parse: add decoding of data frames
Mychaela Falconia <falcon@freecalypso.org>
parents: 10
diff changeset
204 break;
46
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
205 case 0x1F:
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
206 fputs(" (E-TRAU)", stdout);
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
207 break;
47
7119884f6afe trau-parse: rudimentary AMR decoding (C-bits)
Mychaela Falconia <falcon@freecalypso.org>
parents: 46
diff changeset
208 case 0x06:
7119884f6afe trau-parse: rudimentary AMR decoding (C-bits)
Mychaela Falconia <falcon@freecalypso.org>
parents: 46
diff changeset
209 fputs(" (AMR)", stdout);
7119884f6afe trau-parse: rudimentary AMR decoding (C-bits)
Mychaela Falconia <falcon@freecalypso.org>
parents: 46
diff changeset
210 break;
0
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
211 }
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
212 putchar('\n');
46
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
213 if (c1_5 == 0x14)
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
214 d144_state = D144_SYNC;
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
215 else if (c1_5 == 0x1F &&
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
216 (d144_state == D144_SYNC || d144_state == D144_EDATA))
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
217 d144_state = D144_EDATA;
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
218 else
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
219 d144_state = NOT_D144;
2
b2ef2c80fef1 trau-parse: add FR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 1
diff changeset
220 switch (c1_5) {
b2ef2c80fef1 trau-parse: add FR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 1
diff changeset
221 case 0x02:
b2ef2c80fef1 trau-parse: add FR decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 1
diff changeset
222 case 0x1C:
46
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
223 case 0x1A:
47
7119884f6afe trau-parse: rudimentary AMR decoding (C-bits)
Mychaela Falconia <falcon@freecalypso.org>
parents: 46
diff changeset
224 case 0x10:
7119884f6afe trau-parse: rudimentary AMR decoding (C-bits)
Mychaela Falconia <falcon@freecalypso.org>
parents: 46
diff changeset
225 case 0x0E:
46
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
226 c6_11 = bits_to_num(frame_bits + 22, 6);
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
227 printf(" C6-C11: %u\n", c6_11);
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
228 printf(" C12=%u C13=%u C14=%u C15=%u\n", frame_bits[28],
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
229 frame_bits[29], frame_bits[30], frame_bits[31]);
76
d4ee42801cdc trau-decode: factor out parse-fr-common.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 50
diff changeset
230 print_fr_efr_frame(frame_bits, c1_5);
47
7119884f6afe trau-parse: rudimentary AMR decoding (C-bits)
Mychaela Falconia <falcon@freecalypso.org>
parents: 46
diff changeset
231 printf(" C16=%u C17=%u C18=%u C19=%u C20=%u C21=%u\n",
7119884f6afe trau-parse: rudimentary AMR decoding (C-bits)
Mychaela Falconia <falcon@freecalypso.org>
parents: 46
diff changeset
232 frame_bits[310], frame_bits[311], frame_bits[312],
7119884f6afe trau-parse: rudimentary AMR decoding (C-bits)
Mychaela Falconia <falcon@freecalypso.org>
parents: 46
diff changeset
233 frame_bits[313], frame_bits[314], frame_bits[315]);
7119884f6afe trau-parse: rudimentary AMR decoding (C-bits)
Mychaela Falconia <falcon@freecalypso.org>
parents: 46
diff changeset
234 printf(" T1=%u T2=%u T3=%u T4=%u\n", frame_bits[316],
7119884f6afe trau-parse: rudimentary AMR decoding (C-bits)
Mychaela Falconia <falcon@freecalypso.org>
parents: 46
diff changeset
235 frame_bits[317], frame_bits[318], frame_bits[319]);
107
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
236 return 1;
38
d7674c80426c trau-parse: add decoding of data frames
Mychaela Falconia <falcon@freecalypso.org>
parents: 10
diff changeset
237 case 0x08:
43
95acde708ce2 trau-parse: add knowledge of HR-data frame types
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
238 case 0x09:
38
d7674c80426c trau-parse: add decoding of data frames
Mychaela Falconia <falcon@freecalypso.org>
parents: 10
diff changeset
239 case 0x16:
43
95acde708ce2 trau-parse: add knowledge of HR-data frame types
Mychaela Falconia <falcon@freecalypso.org>
parents: 38
diff changeset
240 case 0x17:
38
d7674c80426c trau-parse: add decoding of data frames
Mychaela Falconia <falcon@freecalypso.org>
parents: 10
diff changeset
241 case 0x14:
77
729dbac9df82 trau-decode: factor out parse-data.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 76
diff changeset
242 print_data_frame(frame_bits);
107
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
243 return 0;
46
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
244 case 0x1F:
77
729dbac9df82 trau-decode: factor out parse-data.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 76
diff changeset
245 print_edata_frame(frame_bits);
107
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
246 return 0;
47
7119884f6afe trau-parse: rudimentary AMR decoding (C-bits)
Mychaela Falconia <falcon@freecalypso.org>
parents: 46
diff changeset
247 case 0x06:
78
00fd38c7c8fe trau-decode: factor out parse-amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents: 77
diff changeset
248 print_amr_frame(frame_bits);
107
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
249 return 1;
46
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
250 default:
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
251 printf(" C6-C15: %u%u%u%u%u%u%u%u%u%u\n", frame_bits[22],
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
252 frame_bits[23], frame_bits[24], frame_bits[25],
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
253 frame_bits[26], frame_bits[27], frame_bits[28],
f977027774cb trau-parse: add support for D144 decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
254 frame_bits[29], frame_bits[30], frame_bits[31]);
49
e579784e5578 trau-parse: restore FR-like display for unknown frames
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
255 printf(" C16=%u C17=%u C18=%u C19=%u C20=%u C21=%u\n",
e579784e5578 trau-parse: restore FR-like display for unknown frames
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
256 frame_bits[310], frame_bits[311], frame_bits[312],
e579784e5578 trau-parse: restore FR-like display for unknown frames
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
257 frame_bits[313], frame_bits[314], frame_bits[315]);
e579784e5578 trau-parse: restore FR-like display for unknown frames
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
258 printf(" T1=%u T2=%u T3=%u T4=%u\n", frame_bits[316],
e579784e5578 trau-parse: restore FR-like display for unknown frames
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
259 frame_bits[317], frame_bits[318], frame_bits[319]);
107
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
260 return 0;
0
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
261 }
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
262 }
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
263
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
264 static void
107
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
265 process_filebuf()
0
131e0f1972bb beginning of trau-parse program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
266 {
107
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
267 unsigned p, nf_pos = 0, nf_accum = 0;
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
268 int match, have_t_bits;
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
269
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
270 d144_state = NOT_D144;
c6ffb176eaed trau-decode: new program trau-parse-n
Mychaela Falconia <falcon@freecalypso.org>
parents: 78
diff changeset
271 for (p = 0; p < total_size; ) {
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272 if ((total_size - p) >= 160)
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273 match = check_sync(p);
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274 else
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275 match = 0;
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276 if (match) {
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277 if (nf_accum) {
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278 printf("Non-frame at 0x%x:\n", nf_pos);
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279 dump_raw_nibbles(filebuf + nf_pos, nf_accum);
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280 }
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281 have_t_bits = process_frame(p);
109
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282 if (have_t_bits && filebuf[p+158] == 0 &&
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283 filebuf[p+159] == 0) {
107
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284 puts("advance of 250 us");
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285 p += 158;
109
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286 } else if (have_t_bits && filebuf[p+158] == 3 &&
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287 filebuf[p+159] == 0) {
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288 puts("advance of 125 us");
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289 p += 159;
107
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290 } else
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291 p += 160;
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292 nf_pos = p;
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293 nf_accum = 0;
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294 } else {
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295 p++;
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296 nf_accum++;
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297 if (nf_accum >= 160) {
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298 printf("Non-frame at 0x%x:\n", nf_pos);
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299 dump_raw_nibbles(filebuf + nf_pos, nf_accum);
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300 nf_pos = p;
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301 nf_accum = 0;
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302 }
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303 d144_state = NOT_D144;
0
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304 }
107
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305 }
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306 if (nf_accum) {
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307 printf("Non-frame at 0x%x:\n", nf_pos);
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diff changeset
308 dump_raw_nibbles(filebuf + nf_pos, nf_accum);
0
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309 }
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310 }
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311
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312 main(argc, argv)
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313 char **argv;
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314 {
107
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diff changeset
315 if (argc != 3) {
108
f2009a354444 trau-parse-n: fix edit error in usage message
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diff changeset
316 fprintf(stderr, "usage: %s binfile subslot\n", argv[0]);
0
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317 exit(1);
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318 }
107
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diff changeset
319 read_ts_file(argv[1], argv[2]);
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diff changeset
320 process_filebuf();
0
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321 exit(0);
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322 }