FreeCalypso > hg > rtp-debug-utils

comparison pcap-study/rtp-gsmfr-dump.c @ 15:96b37cef5020

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rtp-gsmfr-dump: convert from old libgsm to libgsmfr2
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 19 Sep 2024 01:59:14 +0000
parents e686bc92c7d8
children
comparison
equal deleted inserted replaced
14:e7f43262efa1 15:96b37cef5020
14 #include <sys/types.h> 14 #include <sys/types.h>
15 #include <sys/socket.h> 15 #include <sys/socket.h>
16 #include <netinet/in.h> 16 #include <netinet/in.h>
17 #include <arpa/inet.h> 17 #include <arpa/inet.h>
18 #include <stdio.h> 18 #include <stdio.h>
19 #include <stdint.h>
19 #include <stdlib.h> 20 #include <stdlib.h>
20 #include <string.h> 21 #include <string.h>
21 #include <strings.h> 22 #include <strings.h>
22 #include <pcap/pcap.h> 23 #include <pcap/pcap.h>
23 #include <gsm.h> 24 #include <tw_gsmfr.h>
24 #include <gsm_efr.h> 25 #include <gsm_efr.h>
25 26
26 static pcap_t *pcap; 27 static pcap_t *pcap;
27 static in_addr_t match_ip_addr; 28 static in_addr_t match_ip_addr;
28 static u_short match_udp_port; 29 static u_short match_udp_port;
29 static unsigned iphdr_addr_offset, udphdr_port_offset; 30 static unsigned iphdr_addr_offset, udphdr_port_offset;
30 static unsigned link_hdr_len, ethertype_offset; 31 static unsigned link_hdr_len, ethertype_offset;
31 static int stream_init_flag; 32 static int stream_init_flag;
32 static unsigned last_seq, last_tstamp, stream_ssrc; 33 static unsigned last_seq, last_tstamp, stream_ssrc;
33 static gsm dummy_state;
34 34
35 static void 35 static void
36 check_dl_type() 36 check_dl_type()
37 { 37 {
38 int dltype; 38 int dltype;
94 static void 94 static void
95 process_payload(payload, payload_len) 95 process_payload(payload, payload_len)
96 u_char *payload; 96 u_char *payload;
97 unsigned payload_len; 97 unsigned payload_len;
98 { 98 {
99 gsm_signal params[76]; 99 int16_t params[76];
100 int i, j, n; 100 int i, j, n;
101 101
102 printf("seq 0x%04X ts 0x%08X: ", last_seq, last_tstamp); 102 printf("seq 0x%04X ts 0x%08X: ", last_seq, last_tstamp);
103 switch (payload_len) { 103 switch (payload_len) {
104 case 0: 104 case 0:
142 goto print_efr; 142 goto print_efr;
143 case 33: 143 case 33:
144 if ((payload[0] & 0xF0) != 0xD0) 144 if ((payload[0] & 0xF0) != 0xD0)
145 break; 145 break;
146 fputs("std FR", stdout); 146 fputs("std FR", stdout);
147 gsm_explode(dummy_state, payload, params); 147 gsmfr_unpack_to_array(payload, params);
148 print_fr: 148 print_fr:
149 n = 0; 149 n = 0;
150 for (i = 0; i < 8; i++) 150 for (i = 0; i < 8; i++)
151 printf(" %d", params[n++]); 151 printf(" %d", params[n++]);
152 putchar('\n'); 152 putchar('\n');
161 if ((payload[0] & 0xF4) != 0xE0) 161 if ((payload[0] & 0xF4) != 0xE0)
162 break; 162 break;
163 if ((payload[1] & 0xF0) != 0xD0) 163 if ((payload[1] & 0xF0) != 0xD0)
164 break; 164 break;
165 printf("TEH 0x%02X FR", payload[0]); 165 printf("TEH 0x%02X FR", payload[0]);
166 gsm_explode(dummy_state, payload+1, params); 166 gsmfr_unpack_to_array(payload+1, params);
167 goto print_fr; 167 goto print_fr;
168 } 168 }
169 printf("unknown payload format, length=%u\n", payload_len); 169 printf("unknown payload format, length=%u\n", payload_len);
170 } 170 }
171 171
255 if (match_ip_addr == INADDR_NONE) { 255 if (match_ip_addr == INADDR_NONE) {
256 fprintf(stderr, "error: IP address argument is invalid\n"); 256 fprintf(stderr, "error: IP address argument is invalid\n");
257 exit(1); 257 exit(1);
258 } 258 }
259 match_udp_port = htons(strtoul(argv[4], 0, 0)); 259 match_udp_port = htons(strtoul(argv[4], 0, 0));
260 dummy_state = gsm_create();
261 if (!dummy_state) {
262 fprintf(stderr, "gsm_create() failed!\n");
263 exit(1);
264 }
265 for (pkt_idx = 0; ; pkt_idx++) { 260 for (pkt_idx = 0; ; pkt_idx++) {
266 pkt = pcap_next(pcap, &pkthdr); 261 pkt = pcap_next(pcap, &pkthdr);
267 if (!pkt) 262 if (!pkt)
268 break; 263 break;
269 process_packet(pkt, (unsigned) pkthdr.caplen, pkt_idx); 264 process_packet(pkt, (unsigned) pkthdr.caplen, pkt_idx);