FreeCalypso > hg > themwi-system-sw

annotate sip-manual-out/rtp.c @ 190:62ecc0aa081f

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sip-manual-out: add state machine for capturing full IS messages
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 17 Mar 2023 10:56:43 -0800
parents 1266e024de6c
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2 * In this module we implement our RTP handling: obtaining a PSTN-side
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3 * RTP endpoint from themwi-rtp-mgr, then handling read select on RTP
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4 * and RTCP UDP sockets.
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5 */
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6
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7 #include <sys/types.h>
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8 #include <sys/socket.h>
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9 #include <netinet/in.h>
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10 #include <stdio.h>
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11 #include <stdint.h>
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12 #include <stdlib.h>
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13 #include <string.h>
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14 #include <strings.h>
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15 #include "../include/tmgw_const.h"
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16 #include "../include/rtp_defs.h"
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17 #include "../librtpalloc/rtp_alloc_simple.h"
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18
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19 struct sockaddr_in rtp_local_addr;
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20 int rtp_udp_fd, rtcp_udp_fd;
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21
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22 static int rtp_start_flag, rtp_bad_flag, rtp_ssrc_chg_flag;
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23 static int rtp_seq_brk_flag, rtp_seq_zero_flag, rtp_seq_neg_flag;
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24 static int rtp_ts_brk_flag;
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25 static uint32_t rtp_ssrc;
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26 static uint32_t rtp_last_ts;
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27 static uint16_t rtp_last_seq;
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28 static int got_some_rtcp;
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29
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30 static const uint8_t hdr_pattern[20] = {0, 1, 0, 1, 0, 1, 1, 0, 1, 0,
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31 0, 1, 1, 0, 1, 0, 1, 0, 0, 1};
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32
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33 static uint8_t is_hunt_buf[320];
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34 static int is_state;
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35 static unsigned is_offset, is_bit_count;
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36 static uint32_t is_rx_word;
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37
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38 static void
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39 reset_is_hunt()
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40 {
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41 memset(is_hunt_buf, 0xFF, 320);
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42 is_state = 0;
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43 }
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44
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45 static void
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46 is_rx_hunt(input_pos)
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47 unsigned input_pos;
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48 {
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49 unsigned offset, n;
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50
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51 for (offset = 0; offset < 16; offset++) {
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52 for (n = 0; n < 20; n++)
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53 if ((is_hunt_buf[offset + n*16] & 1) != hdr_pattern[n])
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54 break;
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55 if (n == 20)
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56 break;
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57 }
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58 if (n != 20)
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59 return;
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60 printf("Found IS_Header, last bit offset %u\n",
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61 input_pos * 16 + offset);
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62 is_offset = offset;
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63 is_state = 1;
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64 is_bit_count = 0;
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65 is_rx_word = 0;
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66 }
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67
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68 static void
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69 is_process_cmd()
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70 {
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71 int cont;
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72
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73 printf("IS_Command: 0x%03X", is_rx_word);
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74 switch (is_rx_word) {
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75 case 0x05D:
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76 printf(" (REQ)\n");
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77 cont = 1;
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78 break;
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79 case 0x0BA:
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80 printf(" (ACK)\n");
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81 cont = 1;
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82 break;
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83 case 0x0E7:
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84 printf(" (IPE)\n");
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85 cont = 1;
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86 break;
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87 case 0x129:
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88 printf(" (FILL)\n");
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89 cont = 0;
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90 break;
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91 case 0x174:
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92 printf(" (DUP)\n");
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93 cont = 0;
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94 break;
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95 case 0x193:
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96 printf(" (SYL)\n");
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97 cont = 0;
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98 break;
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99 default:
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100 printf(" (bad)\n");
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101 cont = 0;
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102 }
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103 if (cont) {
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104 is_state = 2;
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105 is_bit_count = 0;
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106 is_rx_word = 0;
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107 } else
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108 is_state = 0;
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109 }
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110
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111 static void
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112 is_process_ext()
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113 {
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114 printf("IS_Extension: 0x%05X", is_rx_word);
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115 if (is_rx_word & 0x80200) {
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116 printf(" (bad sync)\n");
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117 is_state = 0;
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118 return;
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119 }
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120 switch (is_rx_word & 3) {
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121 case 0:
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122 printf(" (final)\n");
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123 is_state = 0;
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124 return;
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125 case 3:
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Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
126 printf(" (continue)\n");
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
127 is_state = 2;
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
128 is_bit_count = 0;
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
129 is_rx_word = 0;
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
130 return;
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
131 default:
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
132 printf(" (bad EX)\n");
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
133 is_state = 0;
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
134 }
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
135 }
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
136
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
137 static void
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
138 is_rx_process(input, input_pos)
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
139 uint8_t *input;
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
140 unsigned input_pos;
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
141 {
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
142 unsigned new_bit;
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
143
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
144 memmove(is_hunt_buf, is_hunt_buf + 16, 304);
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
145 memcpy(is_hunt_buf + 304, input, 16);
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
146 if (!is_state) {
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
147 is_rx_hunt(input_pos);
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
148 return;
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
149 }
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
150 new_bit = input[is_offset] & 1;
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
151 is_rx_word <<= 1;
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
152 is_rx_word |= new_bit;
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
153 is_bit_count++;
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
154 if (is_state == 1 && is_bit_count == 10)
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
155 is_process_cmd();
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
156 else if (is_state == 2 && is_bit_count == 20)
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
Mychaela Falconia <falcon@freecalypso.org>
parents: 189
diff changeset
157 is_process_ext();
189
1266e024de6c sip-manual-out: implement hunt for IS_Header in Rx RTP
Mychaela Falconia <falcon@freecalypso.org>
parents: 188
diff changeset
158 }
1266e024de6c sip-manual-out: implement hunt for IS_Header in Rx RTP
Mychaela Falconia <falcon@freecalypso.org>
parents: 188
diff changeset
159
187
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 void
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 obtain_rtp_endp()
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162 {
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 int rc;
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 struct rtp_alloc_simple res;
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 rc = rtp_alloc_simple(TMGW_EP_TYPE_PSTN_ONLY, &res);
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 if (rc < 0)
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 exit(1); /* error msg already printed */
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 bcopy(&res.pstn_addr, &rtp_local_addr, sizeof(struct sockaddr_in));
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170 rtp_udp_fd = res.pstn_rtp_fd;
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 rtcp_udp_fd = res.pstn_rtcp_fd;
189
1266e024de6c sip-manual-out: implement hunt for IS_Header in Rx RTP
Mychaela Falconia <falcon@freecalypso.org>
parents: 188
diff changeset
172 reset_is_hunt();
187
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 }
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 void
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 rtp_rx_select()
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 {
188
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
178 struct rtp_packet pkt;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
179 struct sockaddr_in sin_from;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
180 socklen_t addrlen;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
181 int16_t seq_delta;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
182 int32_t ts_delta;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
183 int rc;
189
1266e024de6c sip-manual-out: implement hunt for IS_Header in Rx RTP
Mychaela Falconia <falcon@freecalypso.org>
parents: 188
diff changeset
184 unsigned is_chunk;
187
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185
188
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
186 addrlen = sizeof(struct sockaddr_in);
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
187 rc = recvfrom(rtp_udp_fd, &pkt, sizeof pkt, 0,
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
188 (struct sockaddr *) &sin_from, &addrlen);
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
189 if (rc < 0)
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
190 return;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
191 if (rc != RTP_PACKET_SIZE_PSTN) {
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
192 bad_rtp_pkt: if (!rtp_bad_flag) {
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
193 printf("Got a bad RTP packet\n");
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
194 rtp_bad_flag = 1;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
195 }
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
196 return;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
197 }
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
198 if (pkt.v_p_x_cc != 0x80)
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
199 goto bad_rtp_pkt;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
200 switch (pkt.m_pt & 0x7F) {
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
201 case PSTN_CODEC_PCMU:
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
202 case PSTN_CODEC_PCMA:
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
203 break;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
204 default:
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
205 goto bad_rtp_pkt;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
206 }
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
207 if (rtp_start_flag && pkt.ssrc != rtp_ssrc) {
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
208 if (!rtp_ssrc_chg_flag) {
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
209 printf("Rx RTP stream changed SSRC\n");
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
210 rtp_ssrc_chg_flag = 1;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
211 }
189
1266e024de6c sip-manual-out: implement hunt for IS_Header in Rx RTP
Mychaela Falconia <falcon@freecalypso.org>
parents: 188
diff changeset
212 reset_is_hunt();
188
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
213 } else if (rtp_start_flag) {
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
214 seq_delta = ntohs(pkt.seq) - rtp_last_seq;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
215 ts_delta = ntohl(pkt.tstamp) - rtp_last_ts;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
216 if (seq_delta == 0) {
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
217 if (!rtp_seq_zero_flag) {
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
218 printf("Rx RTP seq zero increment\n");
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
219 rtp_seq_zero_flag = 1;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
220 }
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
221 return;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
222 }
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
223 if (seq_delta < 0) {
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
224 if (!rtp_seq_neg_flag) {
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
225 printf("Rx RTP seq negative increment\n");
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
226 rtp_seq_neg_flag = 1;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
227 }
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
228 return;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
229 }
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
230 if (seq_delta != 1) {
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
231 if (!rtp_seq_brk_flag) {
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
232 printf("Rx RTP stream seq break\n");
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
233 rtp_seq_brk_flag = 1;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
234 }
189
1266e024de6c sip-manual-out: implement hunt for IS_Header in Rx RTP
Mychaela Falconia <falcon@freecalypso.org>
parents: 188
diff changeset
235 reset_is_hunt();
188
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
236 } else if (ts_delta != 160) {
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
237 if (!rtp_ts_brk_flag) {
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
238 printf("Rx RTP stream tstamp break\n");
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
239 rtp_ts_brk_flag = 1;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
240 }
189
1266e024de6c sip-manual-out: implement hunt for IS_Header in Rx RTP
Mychaela Falconia <falcon@freecalypso.org>
parents: 188
diff changeset
241 reset_is_hunt();
188
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
242 }
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
243 }
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
244 rtp_ssrc = pkt.ssrc;
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
245 rtp_last_ts = ntohl(pkt.tstamp);
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
246 rtp_last_seq = ntohs(pkt.seq);
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
247 if (!rtp_start_flag) {
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
248 printf("Rx RTP stream begins with seq=%u ts=%u\n",
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
249 rtp_last_seq, rtp_last_ts);
6aecee01cf0a sip-manual-out: add RTP stream continuity analysis
Mychaela Falconia <falcon@freecalypso.org>
parents: 187
diff changeset
250 rtp_start_flag = 1;
187
258932879f8b sip-manual-out: rework for internal RTP handling, using themwi-rtp-mgr
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
251 }
189
1266e024de6c sip-manual-out: implement hunt for IS_Header in Rx RTP
Mychaela Falconia <falcon@freecalypso.org>
parents: 188
diff changeset
252 for (is_chunk = 0; is_chunk < 10; is_chunk++)
190
62ecc0aa081f sip-manual-out: add state machine for capturing full IS messages
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253 is_rx_process(pkt.payload + is_chunk * 16, is_chunk);
187
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254 }
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255
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parents:
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256 void
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Mychaela Falconia <falcon@freecalypso.org>
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257 rtcp_rx_select()
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258 {
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259 u_char buf[512];
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260
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261 recv(rtcp_udp_fd, buf, sizeof buf, 0);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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262 if (!got_some_rtcp) {
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263 printf("Got some RTCP\n");
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parents:
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264 got_some_rtcp = 1;
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265 }
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266 }