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00029 #include "asterisk.h"
00030
00031 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 116463 $")
00032
00033 #include <stdio.h>
00034 #include <stdlib.h>
00035 #include <string.h>
00036 #include <sys/time.h>
00037 #include <signal.h>
00038 #include <errno.h>
00039 #include <unistd.h>
00040 #include <netinet/in.h>
00041 #include <sys/time.h>
00042 #include <sys/socket.h>
00043 #include <arpa/inet.h>
00044 #include <fcntl.h>
00045
00046 #include "asterisk/rtp.h"
00047 #include "asterisk/frame.h"
00048 #include "asterisk/logger.h"
00049 #include "asterisk/options.h"
00050 #include "asterisk/channel.h"
00051 #include "asterisk/acl.h"
00052 #include "asterisk/channel.h"
00053 #include "asterisk/config.h"
00054 #include "asterisk/lock.h"
00055 #include "asterisk/utils.h"
00056 #include "asterisk/cli.h"
00057 #include "asterisk/unaligned.h"
00058 #include "asterisk/utils.h"
00059
00060 #define MAX_TIMESTAMP_SKEW 640
00061
00062 #define RTP_SEQ_MOD (1<<16)
00063 #define RTCP_DEFAULT_INTERVALMS 5000
00064 #define RTCP_MIN_INTERVALMS 500
00065 #define RTCP_MAX_INTERVALMS 60000
00066
00067 #define RTCP_PT_FUR 192
00068 #define RTCP_PT_SR 200
00069 #define RTCP_PT_RR 201
00070 #define RTCP_PT_SDES 202
00071 #define RTCP_PT_BYE 203
00072 #define RTCP_PT_APP 204
00073
00074 #define RTP_MTU 1200
00075
00076 #define DEFAULT_DTMF_TIMEOUT 3000
00077
00078 static int dtmftimeout = DEFAULT_DTMF_TIMEOUT;
00079
00080 static int rtpstart;
00081 static int rtpend;
00082 static int rtpdebug;
00083 static int rtcpdebug;
00084 static int rtcpstats;
00085 static int rtcpinterval = RTCP_DEFAULT_INTERVALMS;
00086 static int stundebug;
00087 static struct sockaddr_in rtpdebugaddr;
00088 static struct sockaddr_in rtcpdebugaddr;
00089 #ifdef SO_NO_CHECK
00090 static int nochecksums;
00091 #endif
00092
00093
00094
00095
00096
00097
00098
00099
00100
00101
00102
00103 struct rtpPayloadType {
00104 int isAstFormat;
00105 int code;
00106 };
00107
00108
00109
00110 struct ast_rtp {
00111 int s;
00112 struct ast_frame f;
00113 unsigned char rawdata[8192 + AST_FRIENDLY_OFFSET];
00114 unsigned int ssrc;
00115 unsigned int themssrc;
00116 unsigned int rxssrc;
00117 unsigned int lastts;
00118 unsigned int lastrxts;
00119 unsigned int lastividtimestamp;
00120 unsigned int lastovidtimestamp;
00121 unsigned int lasteventseqn;
00122 int lastrxseqno;
00123 unsigned short seedrxseqno;
00124 unsigned int seedrxts;
00125 unsigned int rxcount;
00126 unsigned int rxoctetcount;
00127 unsigned int txcount;
00128 unsigned int txoctetcount;
00129 unsigned int cycles;
00130 double rxjitter;
00131 double rxtransit;
00132 int lasttxformat;
00133 int lastrxformat;
00134
00135 int rtptimeout;
00136 int rtpholdtimeout;
00137 int rtpkeepalive;
00138
00139
00140 char resp;
00141 unsigned int lastevent;
00142 int dtmfcount;
00143 unsigned int dtmfsamples;
00144
00145 unsigned int lastdigitts;
00146 char sending_digit;
00147 char send_digit;
00148 int send_payload;
00149 int send_duration;
00150 int nat;
00151 unsigned int flags;
00152 struct sockaddr_in us;
00153 struct sockaddr_in them;
00154 struct timeval rxcore;
00155 struct timeval txcore;
00156 double drxcore;
00157 struct timeval lastrx;
00158 struct timeval dtmfmute;
00159 struct ast_smoother *smoother;
00160 int *ioid;
00161 unsigned short seqno;
00162 unsigned short rxseqno;
00163 struct sched_context *sched;
00164 struct io_context *io;
00165 void *data;
00166 ast_rtp_callback callback;
00167 ast_mutex_t bridge_lock;
00168 struct rtpPayloadType current_RTP_PT[MAX_RTP_PT];
00169 int rtp_lookup_code_cache_isAstFormat;
00170 int rtp_lookup_code_cache_code;
00171 int rtp_lookup_code_cache_result;
00172 struct ast_rtcp *rtcp;
00173 struct ast_codec_pref pref;
00174 struct ast_rtp *bridged;
00175 int set_marker_bit:1;
00176 };
00177
00178
00179 static int ast_rtcp_write(const void *data);
00180 static void timeval2ntp(struct timeval tv, unsigned int *msw, unsigned int *lsw);
00181 static int ast_rtcp_write_sr(const void *data);
00182 static int ast_rtcp_write_rr(const void *data);
00183 static unsigned int ast_rtcp_calc_interval(struct ast_rtp *rtp);
00184 static int ast_rtp_senddigit_continuation(struct ast_rtp *rtp);
00185 int ast_rtp_senddigit_end(struct ast_rtp *rtp, char digit);
00186
00187 #define FLAG_3389_WARNING (1 << 0)
00188 #define FLAG_NAT_ACTIVE (3 << 1)
00189 #define FLAG_NAT_INACTIVE (0 << 1)
00190 #define FLAG_NAT_INACTIVE_NOWARN (1 << 1)
00191 #define FLAG_HAS_DTMF (1 << 3)
00192 #define FLAG_P2P_SENT_MARK (1 << 4)
00193 #define FLAG_P2P_NEED_DTMF (1 << 5)
00194 #define FLAG_CALLBACK_MODE (1 << 6)
00195 #define FLAG_DTMF_COMPENSATE (1 << 7)
00196 #define FLAG_HAS_STUN (1 << 8)
00197
00198
00199
00200
00201
00202
00203
00204
00205
00206
00207
00208 struct ast_rtcp {
00209 int s;
00210 struct sockaddr_in us;
00211 struct sockaddr_in them;
00212 unsigned int soc;
00213 unsigned int spc;
00214 unsigned int themrxlsr;
00215 struct timeval rxlsr;
00216 struct timeval txlsr;
00217 unsigned int expected_prior;
00218 unsigned int received_prior;
00219 int schedid;
00220 unsigned int rr_count;
00221 unsigned int sr_count;
00222 unsigned int lastsrtxcount;
00223 double accumulated_transit;
00224 double rtt;
00225 unsigned int reported_jitter;
00226 unsigned int reported_lost;
00227 char quality[AST_MAX_USER_FIELD];
00228 double maxrxjitter;
00229 double minrxjitter;
00230 double maxrtt;
00231 double minrtt;
00232 int sendfur;
00233 };
00234
00235
00236 typedef struct { unsigned int id[4]; } __attribute__((packed)) stun_trans_id;
00237
00238
00239 struct stun_header {
00240 unsigned short msgtype;
00241 unsigned short msglen;
00242 stun_trans_id id;
00243 unsigned char ies[0];
00244 } __attribute__((packed));
00245
00246 struct stun_attr {
00247 unsigned short attr;
00248 unsigned short len;
00249 unsigned char value[0];
00250 } __attribute__((packed));
00251
00252 struct stun_addr {
00253 unsigned char unused;
00254 unsigned char family;
00255 unsigned short port;
00256 unsigned int addr;
00257 } __attribute__((packed));
00258
00259 #define STUN_IGNORE (0)
00260 #define STUN_ACCEPT (1)
00261
00262 #define STUN_BINDREQ 0x0001
00263 #define STUN_BINDRESP 0x0101
00264 #define STUN_BINDERR 0x0111
00265 #define STUN_SECREQ 0x0002
00266 #define STUN_SECRESP 0x0102
00267 #define STUN_SECERR 0x0112
00268
00269 #define STUN_MAPPED_ADDRESS 0x0001
00270 #define STUN_RESPONSE_ADDRESS 0x0002
00271 #define STUN_CHANGE_REQUEST 0x0003
00272 #define STUN_SOURCE_ADDRESS 0x0004
00273 #define STUN_CHANGED_ADDRESS 0x0005
00274 #define STUN_USERNAME 0x0006
00275 #define STUN_PASSWORD 0x0007
00276 #define STUN_MESSAGE_INTEGRITY 0x0008
00277 #define STUN_ERROR_CODE 0x0009
00278 #define STUN_UNKNOWN_ATTRIBUTES 0x000a
00279 #define STUN_REFLECTED_FROM 0x000b
00280
00281 static const char *stun_msg2str(int msg)
00282 {
00283 switch(msg) {
00284 case STUN_BINDREQ:
00285 return "Binding Request";
00286 case STUN_BINDRESP:
00287 return "Binding Response";
00288 case STUN_BINDERR:
00289 return "Binding Error Response";
00290 case STUN_SECREQ:
00291 return "Shared Secret Request";
00292 case STUN_SECRESP:
00293 return "Shared Secret Response";
00294 case STUN_SECERR:
00295 return "Shared Secret Error Response";
00296 }
00297 return "Non-RFC3489 Message";
00298 }
00299
00300 static const char *stun_attr2str(int msg)
00301 {
00302 switch(msg) {
00303 case STUN_MAPPED_ADDRESS:
00304 return "Mapped Address";
00305 case STUN_RESPONSE_ADDRESS:
00306 return "Response Address";
00307 case STUN_CHANGE_REQUEST:
00308 return "Change Request";
00309 case STUN_SOURCE_ADDRESS:
00310 return "Source Address";
00311 case STUN_CHANGED_ADDRESS:
00312 return "Changed Address";
00313 case STUN_USERNAME:
00314 return "Username";
00315 case STUN_PASSWORD:
00316 return "Password";
00317 case STUN_MESSAGE_INTEGRITY:
00318 return "Message Integrity";
00319 case STUN_ERROR_CODE:
00320 return "Error Code";
00321 case STUN_UNKNOWN_ATTRIBUTES:
00322 return "Unknown Attributes";
00323 case STUN_REFLECTED_FROM:
00324 return "Reflected From";
00325 }
00326 return "Non-RFC3489 Attribute";
00327 }
00328
00329 struct stun_state {
00330 const char *username;
00331 const char *password;
00332 };
00333
00334 static int stun_process_attr(struct stun_state *state, struct stun_attr *attr)
00335 {
00336 if (stundebug)
00337 ast_verbose("Found STUN Attribute %s (%04x), length %d\n",
00338 stun_attr2str(ntohs(attr->attr)), ntohs(attr->attr), ntohs(attr->len));
00339 switch(ntohs(attr->attr)) {
00340 case STUN_USERNAME:
00341 state->username = (const char *) (attr->value);
00342 break;
00343 case STUN_PASSWORD:
00344 state->password = (const char *) (attr->value);
00345 break;
00346 default:
00347 if (stundebug)
00348 ast_verbose("Ignoring STUN attribute %s (%04x), length %d\n",
00349 stun_attr2str(ntohs(attr->attr)), ntohs(attr->attr), ntohs(attr->len));
00350 }
00351 return 0;
00352 }
00353
00354 static void append_attr_string(struct stun_attr **attr, int attrval, const char *s, int *len, int *left)
00355 {
00356 int size = sizeof(**attr) + strlen(s);
00357 if (*left > size) {
00358 (*attr)->attr = htons(attrval);
00359 (*attr)->len = htons(strlen(s));
00360 memcpy((*attr)->value, s, strlen(s));
00361 (*attr) = (struct stun_attr *)((*attr)->value + strlen(s));
00362 *len += size;
00363 *left -= size;
00364 }
00365 }
00366
00367 static void append_attr_address(struct stun_attr **attr, int attrval, struct sockaddr_in *sin, int *len, int *left)
00368 {
00369 int size = sizeof(**attr) + 8;
00370 struct stun_addr *addr;
00371 if (*left > size) {
00372 (*attr)->attr = htons(attrval);
00373 (*attr)->len = htons(8);
00374 addr = (struct stun_addr *)((*attr)->value);
00375 addr->unused = 0;
00376 addr->family = 0x01;
00377 addr->port = sin->sin_port;
00378 addr->addr = sin->sin_addr.s_addr;
00379 (*attr) = (struct stun_attr *)((*attr)->value + 8);
00380 *len += size;
00381 *left -= size;
00382 }
00383 }
00384
00385 static int stun_send(int s, struct sockaddr_in *dst, struct stun_header *resp)
00386 {
00387 return sendto(s, resp, ntohs(resp->msglen) + sizeof(*resp), 0,
00388 (struct sockaddr *)dst, sizeof(*dst));
00389 }
00390
00391 static void stun_req_id(struct stun_header *req)
00392 {
00393 int x;
00394 for (x=0;x<4;x++)
00395 req->id.id[x] = ast_random();
00396 }
00397
00398 size_t ast_rtp_alloc_size(void)
00399 {
00400 return sizeof(struct ast_rtp);
00401 }
00402
00403 void ast_rtp_stun_request(struct ast_rtp *rtp, struct sockaddr_in *suggestion, const char *username)
00404 {
00405 struct stun_header *req;
00406 unsigned char reqdata[1024];
00407 int reqlen, reqleft;
00408 struct stun_attr *attr;
00409
00410 req = (struct stun_header *)reqdata;
00411 stun_req_id(req);
00412 reqlen = 0;
00413 reqleft = sizeof(reqdata) - sizeof(struct stun_header);
00414 req->msgtype = 0;
00415 req->msglen = 0;
00416 attr = (struct stun_attr *)req->ies;
00417 if (username)
00418 append_attr_string(&attr, STUN_USERNAME, username, &reqlen, &reqleft);
00419 req->msglen = htons(reqlen);
00420 req->msgtype = htons(STUN_BINDREQ);
00421 stun_send(rtp->s, suggestion, req);
00422 }
00423
00424 static int stun_handle_packet(int s, struct sockaddr_in *src, unsigned char *data, size_t len)
00425 {
00426 struct stun_header *resp, *hdr = (struct stun_header *)data;
00427 struct stun_attr *attr;
00428 struct stun_state st;
00429 int ret = STUN_IGNORE;
00430 unsigned char respdata[1024];
00431 int resplen, respleft;
00432
00433 if (len < sizeof(struct stun_header)) {
00434 if (option_debug)
00435 ast_log(LOG_DEBUG, "Runt STUN packet (only %zd, wanting at least %zd)\n", len, sizeof(struct stun_header));
00436 return -1;
00437 }
00438 if (stundebug)
00439 ast_verbose("STUN Packet, msg %s (%04x), length: %d\n", stun_msg2str(ntohs(hdr->msgtype)), ntohs(hdr->msgtype), ntohs(hdr->msglen));
00440 if (ntohs(hdr->msglen) > len - sizeof(struct stun_header)) {
00441 if (option_debug)
00442 ast_log(LOG_DEBUG, "Scrambled STUN packet length (got %d, expecting %zd)\n", ntohs(hdr->msglen), len - sizeof(struct stun_header));
00443 } else
00444 len = ntohs(hdr->msglen);
00445 data += sizeof(struct stun_header);
00446 memset(&st, 0, sizeof(st));
00447 while(len) {
00448 if (len < sizeof(struct stun_attr)) {
00449 if (option_debug)
00450 ast_log(LOG_DEBUG, "Runt Attribute (got %zd, expecting %zd)\n", len, sizeof(struct stun_attr));
00451 break;
00452 }
00453 attr = (struct stun_attr *)data;
00454 if ((ntohs(attr->len) + sizeof(struct stun_attr)) > len) {
00455 if (option_debug)
00456 ast_log(LOG_DEBUG, "Inconsistent Attribute (length %d exceeds remaining msg len %d)\n", (int) (ntohs(attr->len) + sizeof(struct stun_attr)), (int) len);
00457 break;
00458 }
00459 if (stun_process_attr(&st, attr)) {
00460 if (option_debug)
00461 ast_log(LOG_DEBUG, "Failed to handle attribute %s (%04x)\n", stun_attr2str(ntohs(attr->attr)), ntohs(attr->attr));
00462 break;
00463 }
00464
00465 attr->attr = 0;
00466 data += ntohs(attr->len) + sizeof(struct stun_attr);
00467 len -= ntohs(attr->len) + sizeof(struct stun_attr);
00468 }
00469
00470 *data = '\0';
00471 resp = (struct stun_header *)respdata;
00472 resplen = 0;
00473 respleft = sizeof(respdata) - sizeof(struct stun_header);
00474 resp->id = hdr->id;
00475 resp->msgtype = 0;
00476 resp->msglen = 0;
00477 attr = (struct stun_attr *)resp->ies;
00478 if (!len) {
00479 switch(ntohs(hdr->msgtype)) {
00480 case STUN_BINDREQ:
00481 if (stundebug)
00482 ast_verbose("STUN Bind Request, username: %s\n",
00483 st.username ? st.username : "<none>");
00484 if (st.username)
00485 append_attr_string(&attr, STUN_USERNAME, st.username, &resplen, &respleft);
00486 append_attr_address(&attr, STUN_MAPPED_ADDRESS, src, &resplen, &respleft);
00487 resp->msglen = htons(resplen);
00488 resp->msgtype = htons(STUN_BINDRESP);
00489 stun_send(s, src, resp);
00490 ret = STUN_ACCEPT;
00491 break;
00492 default:
00493 if (stundebug)
00494 ast_verbose("Dunno what to do with STUN message %04x (%s)\n", ntohs(hdr->msgtype), stun_msg2str(ntohs(hdr->msgtype)));
00495 }
00496 }
00497 return ret;
00498 }
00499
00500
00501 static AST_LIST_HEAD_STATIC(protos, ast_rtp_protocol);
00502
00503 static void timeval2ntp(struct timeval tv, unsigned int *msw, unsigned int *lsw)
00504 {
00505 unsigned int sec, usec, frac;
00506 sec = tv.tv_sec + 2208988800u;
00507 usec = tv.tv_usec;
00508 frac = (usec << 12) + (usec << 8) - ((usec * 3650) >> 6);
00509 *msw = sec;
00510 *lsw = frac;
00511 }
00512
00513 int ast_rtp_fd(struct ast_rtp *rtp)
00514 {
00515 return rtp->s;
00516 }
00517
00518 int ast_rtcp_fd(struct ast_rtp *rtp)
00519 {
00520 if (rtp->rtcp)
00521 return rtp->rtcp->s;
00522 return -1;
00523 }
00524
00525 unsigned int ast_rtcp_calc_interval(struct ast_rtp *rtp)
00526 {
00527 unsigned int interval;
00528
00529
00530 interval = rtcpinterval;
00531 return interval;
00532 }
00533
00534
00535 void ast_rtp_set_rtptimers_onhold(struct ast_rtp *rtp)
00536 {
00537 rtp->rtptimeout = (-1) * rtp->rtptimeout;
00538 rtp->rtpholdtimeout = (-1) * rtp->rtpholdtimeout;
00539 }
00540
00541
00542 void ast_rtp_set_rtptimeout(struct ast_rtp *rtp, int timeout)
00543 {
00544 rtp->rtptimeout = timeout;
00545 }
00546
00547
00548 void ast_rtp_set_rtpholdtimeout(struct ast_rtp *rtp, int timeout)
00549 {
00550 rtp->rtpholdtimeout = timeout;
00551 }
00552
00553
00554 void ast_rtp_set_rtpkeepalive(struct ast_rtp *rtp, int period)
00555 {
00556 rtp->rtpkeepalive = period;
00557 }
00558
00559
00560 int ast_rtp_get_rtptimeout(struct ast_rtp *rtp)
00561 {
00562 if (rtp->rtptimeout < 0)
00563 return 0;
00564 return rtp->rtptimeout;
00565 }
00566
00567
00568 int ast_rtp_get_rtpholdtimeout(struct ast_rtp *rtp)
00569 {
00570 if (rtp->rtptimeout < 0)
00571 return 0;
00572 return rtp->rtpholdtimeout;
00573 }
00574
00575
00576 int ast_rtp_get_rtpkeepalive(struct ast_rtp *rtp)
00577 {
00578 return rtp->rtpkeepalive;
00579 }
00580
00581 void ast_rtp_set_data(struct ast_rtp *rtp, void *data)
00582 {
00583 rtp->data = data;
00584 }
00585
00586 void ast_rtp_set_callback(struct ast_rtp *rtp, ast_rtp_callback callback)
00587 {
00588 rtp->callback = callback;
00589 }
00590
00591 void ast_rtp_setnat(struct ast_rtp *rtp, int nat)
00592 {
00593 rtp->nat = nat;
00594 }
00595
00596 int ast_rtp_getnat(struct ast_rtp *rtp)
00597 {
00598 return ast_test_flag(rtp, FLAG_NAT_ACTIVE);
00599 }
00600
00601 void ast_rtp_setdtmf(struct ast_rtp *rtp, int dtmf)
00602 {
00603 ast_set2_flag(rtp, dtmf ? 1 : 0, FLAG_HAS_DTMF);
00604 }
00605
00606 void ast_rtp_setdtmfcompensate(struct ast_rtp *rtp, int compensate)
00607 {
00608 ast_set2_flag(rtp, compensate ? 1 : 0, FLAG_DTMF_COMPENSATE);
00609 }
00610
00611 void ast_rtp_setstun(struct ast_rtp *rtp, int stun_enable)
00612 {
00613 ast_set2_flag(rtp, stun_enable ? 1 : 0, FLAG_HAS_STUN);
00614 }
00615
00616 static struct ast_frame *send_dtmf(struct ast_rtp *rtp, enum ast_frame_type type)
00617 {
00618 if (((ast_test_flag(rtp, FLAG_DTMF_COMPENSATE) && type == AST_FRAME_DTMF_END) ||
00619 (type == AST_FRAME_DTMF_BEGIN)) && ast_tvcmp(ast_tvnow(), rtp->dtmfmute) < 0) {
00620 if (option_debug)
00621 ast_log(LOG_DEBUG, "Ignore potential DTMF echo from '%s'\n", ast_inet_ntoa(rtp->them.sin_addr));
00622 rtp->resp = 0;
00623 rtp->dtmfsamples = 0;
00624 return &ast_null_frame;
00625 }
00626 if (option_debug)
00627 ast_log(LOG_DEBUG, "Sending dtmf: %d (%c), at %s\n", rtp->resp, rtp->resp, ast_inet_ntoa(rtp->them.sin_addr));
00628 if (rtp->resp == 'X') {
00629 rtp->f.frametype = AST_FRAME_CONTROL;
00630 rtp->f.subclass = AST_CONTROL_FLASH;
00631 } else {
00632 rtp->f.frametype = type;
00633 rtp->f.subclass = rtp->resp;
00634 }
00635 rtp->f.datalen = 0;
00636 rtp->f.samples = 0;
00637 rtp->f.mallocd = 0;
00638 rtp->f.src = "RTP";
00639 return &rtp->f;
00640
00641 }
00642
00643 static inline int rtp_debug_test_addr(struct sockaddr_in *addr)
00644 {
00645 if (rtpdebug == 0)
00646 return 0;
00647 if (rtpdebugaddr.sin_addr.s_addr) {
00648 if (((ntohs(rtpdebugaddr.sin_port) != 0)
00649 && (rtpdebugaddr.sin_port != addr->sin_port))
00650 || (rtpdebugaddr.sin_addr.s_addr != addr->sin_addr.s_addr))
00651 return 0;
00652 }
00653 return 1;
00654 }
00655
00656 static inline int rtcp_debug_test_addr(struct sockaddr_in *addr)
00657 {
00658 if (rtcpdebug == 0)
00659 return 0;
00660 if (rtcpdebugaddr.sin_addr.s_addr) {
00661 if (((ntohs(rtcpdebugaddr.sin_port) != 0)
00662 && (rtcpdebugaddr.sin_port != addr->sin_port))
00663 || (rtcpdebugaddr.sin_addr.s_addr != addr->sin_addr.s_addr))
00664 return 0;
00665 }
00666 return 1;
00667 }
00668
00669
00670 static struct ast_frame *process_cisco_dtmf(struct ast_rtp *rtp, unsigned char *data, int len)
00671 {
00672 unsigned int event;
00673 char resp = 0;
00674 struct ast_frame *f = NULL;
00675 event = ntohl(*((unsigned int *)(data)));
00676 event &= 0x001F;
00677 if (option_debug > 2 || rtpdebug)
00678 ast_log(LOG_DEBUG, "Cisco DTMF Digit: %08x (len = %d)\n", event, len);
00679 if (event < 10) {
00680 resp = '0' + event;
00681 } else if (event < 11) {
00682 resp = '*';
00683 } else if (event < 12) {
00684 resp = '#';
00685 } else if (event < 16) {
00686 resp = 'A' + (event - 12);
00687 } else if (event < 17) {
00688 resp = 'X';
00689 }
00690 if (rtp->resp && (rtp->resp != resp)) {
00691 f = send_dtmf(rtp, AST_FRAME_DTMF_END);
00692 }
00693 rtp->resp = resp;
00694 rtp->dtmfcount = dtmftimeout;
00695 return f;
00696 }
00697
00698
00699
00700
00701
00702
00703
00704
00705
00706
00707
00708
00709 static struct ast_frame *process_rfc2833(struct ast_rtp *rtp, unsigned char *data, int len, unsigned int seqno, unsigned int timestamp)
00710 {
00711 unsigned int event;
00712 unsigned int event_end;
00713 unsigned int samples;
00714 char resp = 0;
00715 struct ast_frame *f = NULL;
00716
00717
00718 event = ntohl(*((unsigned int *)(data)));
00719 event >>= 24;
00720 event_end = ntohl(*((unsigned int *)(data)));
00721 event_end <<= 8;
00722 event_end >>= 24;
00723 samples = ntohl(*((unsigned int *)(data)));
00724 samples &= 0xFFFF;
00725
00726
00727 if (rtpdebug || option_debug > 2)
00728 ast_log(LOG_DEBUG, "- RTP 2833 Event: %08x (len = %d)\n", event, len);
00729
00730
00731 if (event < 10) {
00732 resp = '0' + event;
00733 } else if (event < 11) {
00734 resp = '*';
00735 } else if (event < 12) {
00736 resp = '#';
00737 } else if (event < 16) {
00738 resp = 'A' + (event - 12);
00739 } else if (event < 17) {
00740 resp = 'X';
00741 } else {
00742
00743 ast_log(LOG_DEBUG, "Ignoring RTP 2833 Event: %08x. Not a DTMF Digit.\n", event);
00744 return &ast_null_frame;
00745 }
00746
00747 if (ast_test_flag(rtp, FLAG_DTMF_COMPENSATE)) {
00748 if ((rtp->lastevent != timestamp) || (rtp->resp && rtp->resp != resp)) {
00749 rtp->resp = resp;
00750 f = send_dtmf(rtp, AST_FRAME_DTMF_END);
00751 f->len = 0;
00752 rtp->lastevent = timestamp;
00753 }
00754 } else {
00755 if ((!(rtp->resp) && (!(event_end & 0x80))) || (rtp->resp && rtp->resp != resp)) {
00756 rtp->resp = resp;
00757 f = send_dtmf(rtp, AST_FRAME_DTMF_BEGIN);
00758 } else if ((event_end & 0x80) && (rtp->lastevent != seqno) && rtp->resp) {
00759 f = send_dtmf(rtp, AST_FRAME_DTMF_END);
00760 f->len = ast_tvdiff_ms(ast_samp2tv(samples, 8000), ast_tv(0, 0));
00761 rtp->resp = 0;
00762 rtp->lastevent = seqno;
00763 }
00764 }
00765
00766 rtp->dtmfcount = dtmftimeout;
00767 rtp->dtmfsamples = samples;
00768
00769 return f;
00770 }
00771
00772
00773
00774
00775
00776
00777
00778 static struct ast_frame *process_rfc3389(struct ast_rtp *rtp, unsigned char *data, int len)
00779 {
00780 struct ast_frame *f = NULL;
00781
00782
00783
00784 if (rtpdebug)
00785 ast_log(LOG_DEBUG, "- RTP 3389 Comfort noise event: Level %d (len = %d)\n", rtp->lastrxformat, len);
00786
00787 if (!(ast_test_flag(rtp, FLAG_3389_WARNING))) {
00788 ast_log(LOG_NOTICE, "Comfort noise support incomplete in Asterisk (RFC 3389). Please turn off on client if possible. Client IP: %s\n",
00789 ast_inet_ntoa(rtp->them.sin_addr));
00790 ast_set_flag(rtp, FLAG_3389_WARNING);
00791 }
00792
00793
00794 if (!len)
00795 return NULL;
00796 if (len < 24) {
00797 rtp->f.data = rtp->rawdata + AST_FRIENDLY_OFFSET;
00798 rtp->f.datalen = len - 1;
00799 rtp->f.offset = AST_FRIENDLY_OFFSET;
00800 memcpy(rtp->f.data, data + 1, len - 1);
00801 } else {
00802 rtp->f.data = NULL;
00803 rtp->f.offset = 0;
00804 rtp->f.datalen = 0;
00805 }
00806 rtp->f.frametype = AST_FRAME_CNG;
00807 rtp->f.subclass = data[0] & 0x7f;
00808 rtp->f.datalen = len - 1;
00809 rtp->f.samples = 0;
00810 rtp->f.delivery.tv_usec = rtp->f.delivery.tv_sec = 0;
00811 f = &rtp->f;
00812 return f;
00813 }
00814
00815 static int rtpread(int *id, int fd, short events, void *cbdata)
00816 {
00817 struct ast_rtp *rtp = cbdata;
00818 struct ast_frame *f;
00819 f = ast_rtp_read(rtp);
00820 if (f) {
00821 if (rtp->callback)
00822 rtp->callback(rtp, f, rtp->data);
00823 }
00824 return 1;
00825 }
00826
00827 struct ast_frame *ast_rtcp_read(struct ast_rtp *rtp)
00828 {
00829 socklen_t len;
00830 int position, i, packetwords;
00831 int res;
00832 struct sockaddr_in sin;
00833 unsigned int rtcpdata[8192 + AST_FRIENDLY_OFFSET];
00834 unsigned int *rtcpheader;
00835 int pt;
00836 struct timeval now;
00837 unsigned int length;
00838 int rc;
00839 double rttsec;
00840 uint64_t rtt = 0;
00841 unsigned int dlsr;
00842 unsigned int lsr;
00843 unsigned int msw;
00844 unsigned int lsw;
00845 unsigned int comp;
00846 struct ast_frame *f = &ast_null_frame;
00847
00848 if (!rtp || !rtp->rtcp)
00849 return &ast_null_frame;
00850
00851 len = sizeof(sin);
00852
00853 res = recvfrom(rtp->rtcp->s, rtcpdata + AST_FRIENDLY_OFFSET, sizeof(rtcpdata) - sizeof(unsigned int) * AST_FRIENDLY_OFFSET,
00854 0, (struct sockaddr *)&sin, &len);
00855 rtcpheader = (unsigned int *)(rtcpdata + AST_FRIENDLY_OFFSET);
00856
00857 if (res < 0) {
00858 ast_assert(errno != EBADF);
00859 if (errno != EAGAIN) {
00860 ast_log(LOG_WARNING, "RTCP Read error: %s. Hanging up.\n", strerror(errno));
00861 return NULL;
00862 }
00863 return &ast_null_frame;
00864 }
00865
00866 packetwords = res / 4;
00867
00868 if (rtp->nat) {
00869
00870 if ((rtp->rtcp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
00871 (rtp->rtcp->them.sin_port != sin.sin_port)) {
00872 memcpy(&rtp->rtcp->them, &sin, sizeof(rtp->rtcp->them));
00873 if (option_debug || rtpdebug)
00874 ast_log(LOG_DEBUG, "RTCP NAT: Got RTCP from other end. Now sending to address %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
00875 }
00876 }
00877
00878 if (option_debug)
00879 ast_log(LOG_DEBUG, "Got RTCP report of %d bytes\n", res);
00880
00881
00882 position = 0;
00883 while (position < packetwords) {
00884 i = position;
00885 length = ntohl(rtcpheader[i]);
00886 pt = (length & 0xff0000) >> 16;
00887 rc = (length & 0x1f000000) >> 24;
00888 length &= 0xffff;
00889
00890 if ((i + length) > packetwords) {
00891 ast_log(LOG_WARNING, "RTCP Read too short\n");
00892 return &ast_null_frame;
00893 }
00894
00895 if (rtcp_debug_test_addr(&sin)) {
00896 ast_verbose("\n\nGot RTCP from %s:%d\n", ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port));
00897 ast_verbose("PT: %d(%s)\n", pt, (pt == 200) ? "Sender Report" : (pt == 201) ? "Receiver Report" : (pt == 192) ? "H.261 FUR" : "Unknown");
00898 ast_verbose("Reception reports: %d\n", rc);
00899 ast_verbose("SSRC of sender: %u\n", rtcpheader[i + 1]);
00900 }
00901
00902 i += 2;
00903
00904 switch (pt) {
00905 case RTCP_PT_SR:
00906 gettimeofday(&rtp->rtcp->rxlsr,NULL);
00907 rtp->rtcp->spc = ntohl(rtcpheader[i+3]);
00908 rtp->rtcp->soc = ntohl(rtcpheader[i + 4]);
00909 rtp->rtcp->themrxlsr = ((ntohl(rtcpheader[i]) & 0x0000ffff) << 16) | ((ntohl(rtcpheader[i + 1]) & 0xffff0000) >> 16);
00910
00911 if (rtcp_debug_test_addr(&sin)) {
00912 ast_verbose("NTP timestamp: %lu.%010lu\n", (unsigned long) ntohl(rtcpheader[i]), (unsigned long) ntohl(rtcpheader[i + 1]) * 4096);
00913 ast_verbose("RTP timestamp: %lu\n", (unsigned long) ntohl(rtcpheader[i + 2]));
00914 ast_verbose("SPC: %lu\tSOC: %lu\n", (unsigned long) ntohl(rtcpheader[i + 3]), (unsigned long) ntohl(rtcpheader[i + 4]));
00915 }
00916 i += 5;
00917 if (rc < 1)
00918 break;
00919
00920 case RTCP_PT_RR:
00921
00922
00923 gettimeofday(&now, NULL);
00924 timeval2ntp(now, &msw, &lsw);
00925 if (ntohl(rtcpheader[i + 4]) && ntohl(rtcpheader[i + 5])) {
00926 comp = ((msw & 0xffff) << 16) | ((lsw & 0xffff0000) >> 16);
00927 lsr = ntohl(rtcpheader[i + 4]);
00928 dlsr = ntohl(rtcpheader[i + 5]);
00929 rtt = comp - lsr - dlsr;
00930
00931
00932
00933 if (rtt < 4294) {
00934 rtt = (rtt * 1000000) >> 16;
00935 } else {
00936 rtt = (rtt * 1000) >> 16;
00937 rtt *= 1000;
00938 }
00939 rtt = rtt / 1000.;
00940 rttsec = rtt / 1000.;
00941
00942 if (comp - dlsr >= lsr) {
00943 rtp->rtcp->accumulated_transit += rttsec;
00944 rtp->rtcp->rtt = rttsec;
00945 if (rtp->rtcp->maxrtt<rttsec)
00946 rtp->rtcp->maxrtt = rttsec;
00947 if (rtp->rtcp->minrtt>rttsec)
00948 rtp->rtcp->minrtt = rttsec;
00949 } else if (rtcp_debug_test_addr(&sin)) {
00950 ast_verbose("Internal RTCP NTP clock skew detected: "
00951 "lsr=%u, now=%u, dlsr=%u (%d:%03dms), "
00952 "diff=%d\n",
00953 lsr, comp, dlsr, dlsr / 65536,
00954 (dlsr % 65536) * 1000 / 65536,
00955 dlsr - (comp - lsr));
00956 }
00957 }
00958
00959 rtp->rtcp->reported_jitter = ntohl(rtcpheader[i + 3]);
00960 rtp->rtcp->reported_lost = ntohl(rtcpheader[i + 1]) & 0xffffff;
00961 if (rtcp_debug_test_addr(&sin)) {
00962 ast_verbose(" Fraction lost: %ld\n", (((long) ntohl(rtcpheader[i + 1]) & 0xff000000) >> 24));
00963 ast_verbose(" Packets lost so far: %d\n", rtp->rtcp->reported_lost);
00964 ast_verbose(" Highest sequence number: %ld\n", (long) (ntohl(rtcpheader[i + 2]) & 0xffff));
00965 ast_verbose(" Sequence number cycles: %ld\n", (long) (ntohl(rtcpheader[i + 2]) & 0xffff) >> 16);
00966 ast_verbose(" Interarrival jitter: %u\n", rtp->rtcp->reported_jitter);
00967 ast_verbose(" Last SR(our NTP): %lu.%010lu\n",(unsigned long) ntohl(rtcpheader[i + 4]) >> 16,((unsigned long) ntohl(rtcpheader[i + 4]) << 16) * 4096);
00968 ast_verbose(" DLSR: %4.4f (sec)\n",ntohl(rtcpheader[i + 5])/65536.0);
00969 if (rtt)
00970 ast_verbose(" RTT: %lu(sec)\n", (unsigned long) rtt);
00971 }
00972 break;
00973 case RTCP_PT_FUR:
00974 if (rtcp_debug_test_addr(&sin))
00975 ast_verbose("Received an RTCP Fast Update Request\n");
00976 rtp->f.frametype = AST_FRAME_CONTROL;
00977 rtp->f.subclass = AST_CONTROL_VIDUPDATE;
00978 rtp->f.datalen = 0;
00979 rtp->f.samples = 0;
00980 rtp->f.mallocd = 0;
00981 rtp->f.src = "RTP";
00982 f = &rtp->f;
00983 break;
00984 case RTCP_PT_SDES:
00985 if (rtcp_debug_test_addr(&sin))
00986 ast_verbose("Received an SDES from %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
00987 break;
00988 case RTCP_PT_BYE:
00989 if (rtcp_debug_test_addr(&sin))
00990 ast_verbose("Received a BYE from %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
00991 break;
00992 default:
00993 if (option_debug)
00994 ast_log(LOG_DEBUG, "Unknown RTCP packet (pt=%d) received from %s:%d\n", pt, ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
00995 break;
00996 }
00997 position += (length + 1);
00998 }
00999
01000 return f;
01001 }
01002
01003 static void calc_rxstamp(struct timeval *tv, struct ast_rtp *rtp, unsigned int timestamp, int mark)
01004 {
01005 struct timeval now;
01006 double transit;
01007 double current_time;
01008 double d;
01009 double dtv;
01010 double prog;
01011
01012 if ((!rtp->rxcore.tv_sec && !rtp->rxcore.tv_usec) || mark) {
01013 gettimeofday(&rtp->rxcore, NULL);
01014 rtp->drxcore = (double) rtp->rxcore.tv_sec + (double) rtp->rxcore.tv_usec / 1000000;
01015
01016 rtp->seedrxts = timestamp;
01017 rtp->rxcore.tv_sec -= timestamp / 8000;
01018 rtp->rxcore.tv_usec -= (timestamp % 8000) * 125;
01019
01020 rtp->rxcore.tv_usec -= rtp->rxcore.tv_usec % 100;
01021 if (rtp->rxcore.tv_usec < 0) {
01022
01023 rtp->rxcore.tv_usec += 1000000;
01024 rtp->rxcore.tv_sec -= 1;
01025 }
01026 }
01027
01028 gettimeofday(&now,NULL);
01029
01030 tv->tv_sec = rtp->rxcore.tv_sec + timestamp / 8000;
01031 tv->tv_usec = rtp->rxcore.tv_usec + (timestamp % 8000) * 125;
01032 if (tv->tv_usec >= 1000000) {
01033 tv->tv_usec -= 1000000;
01034 tv->tv_sec += 1;
01035 }
01036 prog = (double)((timestamp-rtp->seedrxts)/8000.);
01037 dtv = (double)rtp->drxcore + (double)(prog);
01038 current_time = (double)now.tv_sec + (double)now.tv_usec/1000000;
01039 transit = current_time - dtv;
01040 d = transit - rtp->rxtransit;
01041 rtp->rxtransit = transit;
01042 if (d<0)
01043 d=-d;
01044 rtp->rxjitter += (1./16.) * (d - rtp->rxjitter);
01045 if (rtp->rtcp && rtp->rxjitter > rtp->rtcp->maxrxjitter)
01046 rtp->rtcp->maxrxjitter = rtp->rxjitter;
01047 if (rtp->rtcp && rtp->rxjitter < rtp->rtcp->minrxjitter)
01048 rtp->rtcp->minrxjitter = rtp->rxjitter;
01049 }
01050
01051
01052 static int bridge_p2p_rtp_write(struct ast_rtp *rtp, struct ast_rtp *bridged, unsigned int *rtpheader, int len, int hdrlen)
01053 {
01054 int res = 0, payload = 0, bridged_payload = 0, mark;
01055 struct rtpPayloadType rtpPT;
01056 int reconstruct = ntohl(rtpheader[0]);
01057
01058
01059 payload = (reconstruct & 0x7f0000) >> 16;
01060 mark = (((reconstruct & 0x800000) >> 23) != 0);
01061
01062
01063 rtpPT = ast_rtp_lookup_pt(rtp, payload);
01064
01065
01066 if (!bridged->current_RTP_PT[payload].code)
01067 return -1;
01068
01069
01070 if (ast_test_flag(rtp, FLAG_P2P_NEED_DTMF) && !rtpPT.isAstFormat && rtpPT.code == AST_RTP_DTMF)
01071 return -1;
01072
01073
01074 bridged_payload = ast_rtp_lookup_code(bridged, rtpPT.isAstFormat, rtpPT.code);
01075
01076
01077 if (!ast_test_flag(rtp, FLAG_P2P_SENT_MARK)) {
01078 mark = 1;
01079 ast_set_flag(rtp, FLAG_P2P_SENT_MARK);
01080 }
01081
01082
01083 reconstruct &= 0xFF80FFFF;
01084 reconstruct |= (bridged_payload << 16);
01085 reconstruct |= (mark << 23);
01086 rtpheader[0] = htonl(reconstruct);
01087
01088
01089 res = sendto(bridged->s, (void *)rtpheader, len, 0, (struct sockaddr *)&bridged->them, sizeof(bridged->them));
01090 if (res < 0) {
01091 if (!bridged->nat || (bridged->nat && (ast_test_flag(bridged, FLAG_NAT_ACTIVE) == FLAG_NAT_ACTIVE))) {
01092 ast_log(LOG_DEBUG, "RTP Transmission error of packet to %s:%d: %s\n", ast_inet_ntoa(bridged->them.sin_addr), ntohs(bridged->them.sin_port), strerror(errno));
01093 } else if (((ast_test_flag(bridged, FLAG_NAT_ACTIVE) == FLAG_NAT_INACTIVE) || rtpdebug) && !ast_test_flag(bridged, FLAG_NAT_INACTIVE_NOWARN)) {
01094 if (option_debug || rtpdebug)
01095 ast_log(LOG_DEBUG, "RTP NAT: Can't write RTP to private address %s:%d, waiting for other end to send audio...\n", ast_inet_ntoa(bridged->them.sin_addr), ntohs(bridged->them.sin_port));
01096 ast_set_flag(bridged, FLAG_NAT_INACTIVE_NOWARN);
01097 }
01098 return 0;
01099 } else if (rtp_debug_test_addr(&bridged->them))
01100 ast_verbose("Sent RTP P2P packet to %s:%u (type %-2.2d, len %-6.6u)\n", ast_inet_ntoa(bridged->them.sin_addr), ntohs(bridged->them.sin_port), bridged_payload, len - hdrlen);
01101
01102 return 0;
01103 }
01104
01105 struct ast_frame *ast_rtp_read(struct ast_rtp *rtp)
01106 {
01107 int res;
01108 struct sockaddr_in sin;
01109 socklen_t len;
01110 unsigned int seqno;
01111 int version;
01112 int payloadtype;
01113 int hdrlen = 12;
01114 int padding;
01115 int mark;
01116 int ext;
01117 int cc;
01118 unsigned int ssrc;
01119 unsigned int timestamp;
01120 unsigned int *rtpheader;
01121 struct rtpPayloadType rtpPT;
01122 struct ast_rtp *bridged = NULL;
01123
01124
01125 if (rtp->sending_digit)
01126 ast_rtp_senddigit_continuation(rtp);
01127
01128 len = sizeof(sin);
01129
01130
01131 res = recvfrom(rtp->s, rtp->rawdata + AST_FRIENDLY_OFFSET, sizeof(rtp->rawdata) - AST_FRIENDLY_OFFSET,
01132 0, (struct sockaddr *)&sin, &len);
01133
01134 rtpheader = (unsigned int *)(rtp->rawdata + AST_FRIENDLY_OFFSET);
01135 if (res < 0) {
01136 ast_assert(errno != EBADF);
01137 if (errno != EAGAIN) {
01138 ast_log(LOG_WARNING, "RTP Read error: %s. Hanging up.\n", strerror(errno));
01139 return NULL;
01140 }
01141 return &ast_null_frame;
01142 }
01143
01144 if (res < hdrlen) {
01145 ast_log(LOG_WARNING, "RTP Read too short\n");
01146 return &ast_null_frame;
01147 }
01148
01149
01150 seqno = ntohl(rtpheader[0]);
01151
01152
01153 version = (seqno & 0xC0000000) >> 30;
01154 if (!version) {
01155 if ((stun_handle_packet(rtp->s, &sin, rtp->rawdata + AST_FRIENDLY_OFFSET, res) == STUN_ACCEPT) &&
01156 (!rtp->them.sin_port && !rtp->them.sin_addr.s_addr)) {
01157 memcpy(&rtp->them, &sin, sizeof(rtp->them));
01158 }
01159 return &ast_null_frame;
01160 }
01161
01162 #if 0
01163
01164 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
01165 return &ast_null_frame;
01166 #endif
01167
01168
01169 if (rtp->nat) {
01170 if ((rtp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
01171 (rtp->them.sin_port != sin.sin_port)) {
01172 rtp->them = sin;
01173 if (rtp->rtcp) {
01174 memcpy(&rtp->rtcp->them, &sin, sizeof(rtp->rtcp->them));
01175 rtp->rtcp->them.sin_port = htons(ntohs(rtp->them.sin_port)+1);
01176 }
01177 rtp->rxseqno = 0;
01178 ast_set_flag(rtp, FLAG_NAT_ACTIVE);
01179 if (option_debug || rtpdebug)
01180 ast_log(LOG_DEBUG, "RTP NAT: Got audio from other end. Now sending to address %s:%d\n", ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port));
01181 }
01182 }
01183
01184
01185 if ((bridged = ast_rtp_get_bridged(rtp)) && !bridge_p2p_rtp_write(rtp, bridged, rtpheader, res, hdrlen))
01186 return &ast_null_frame;
01187
01188 if (version != 2)
01189 return &ast_null_frame;
01190
01191 payloadtype = (seqno & 0x7f0000) >> 16;
01192 padding = seqno & (1 << 29);
01193 mark = seqno & (1 << 23);
01194 ext = seqno & (1 << 28);
01195 cc = (seqno & 0xF000000) >> 24;
01196 seqno &= 0xffff;
01197 timestamp = ntohl(rtpheader[1]);
01198 ssrc = ntohl(rtpheader[2]);
01199
01200 if (!mark && rtp->rxssrc && rtp->rxssrc != ssrc) {
01201 if (option_debug || rtpdebug)
01202 ast_log(LOG_DEBUG, "Forcing Marker bit, because SSRC has changed\n");
01203 mark = 1;
01204 }
01205
01206 rtp->rxssrc = ssrc;
01207
01208 if (padding) {
01209
01210 res -= rtp->rawdata[AST_FRIENDLY_OFFSET + res - 1];
01211 }
01212
01213 if (cc) {
01214
01215 hdrlen += cc*4;
01216 }
01217
01218 if (ext) {
01219
01220 hdrlen += (ntohl(rtpheader[hdrlen/4]) & 0xffff) << 2;
01221 hdrlen += 4;
01222 }
01223
01224 if (res < hdrlen) {
01225 ast_log(LOG_WARNING, "RTP Read too short (%d, expecting %d)\n", res, hdrlen);
01226 return &ast_null_frame;
01227 }
01228
01229 rtp->rxcount++;
01230
01231 if (rtp->rxcount==1) {
01232
01233 rtp->seedrxseqno = seqno;
01234 }
01235
01236
01237 if (rtp->rtcp && rtp->rtcp->them.sin_addr.s_addr && rtp->rtcp->schedid < 1) {
01238
01239 rtp->rtcp->schedid = ast_sched_add(rtp->sched, ast_rtcp_calc_interval(rtp), ast_rtcp_write, rtp);
01240 }
01241 if ( (int)rtp->lastrxseqno - (int)seqno > 100)
01242 rtp->cycles += RTP_SEQ_MOD;
01243
01244 rtp->lastrxseqno = seqno;
01245
01246 if (rtp->themssrc==0)
01247 rtp->themssrc = ntohl(rtpheader[2]);
01248
01249 if (rtp_debug_test_addr(&sin))
01250 ast_verbose("Got RTP packet from %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
01251 ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port), payloadtype, seqno, timestamp,res - hdrlen);
01252
01253 rtpPT = ast_rtp_lookup_pt(rtp, payloadtype);
01254 if (!rtpPT.isAstFormat) {
01255 struct ast_frame *f = NULL;
01256
01257
01258 if (rtpPT.code == AST_RTP_DTMF) {
01259
01260 if (rtp_debug_test_addr(&sin)) {
01261 unsigned char *data;
01262 unsigned int event;
01263 unsigned int event_end;
01264 unsigned int duration;
01265 data = rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen;
01266 event = ntohl(*((unsigned int *)(data)));
01267 event >>= 24;
01268 event_end = ntohl(*((unsigned int *)(data)));
01269 event_end <<= 8;
01270 event_end >>= 24;
01271 duration = ntohl(*((unsigned int *)(data)));
01272 duration &= 0xFFFF;
01273 ast_verbose("Got RTP RFC2833 from %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u, mark %d, event %08x, end %d, duration %-5.5d) \n", ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port), payloadtype, seqno, timestamp, res - hdrlen, (mark?1:0), event, ((event_end & 0x80)?1:0), duration);
01274 }
01275 f = process_rfc2833(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen, seqno, timestamp);
01276 } else if (rtpPT.code == AST_RTP_CISCO_DTMF) {
01277
01278 if (rtp->lastevent <= seqno || (rtp->lastevent >= 65530 && seqno <= 6)) {
01279 f = process_cisco_dtmf(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen);
01280 rtp->lastevent = seqno;
01281 }
01282 } else if (rtpPT.code == AST_RTP_CN) {
01283
01284 f = process_rfc3389(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen);
01285 } else {
01286 ast_log(LOG_NOTICE, "Unknown RTP codec %d received from '%s'\n", payloadtype, ast_inet_ntoa(rtp->them.sin_addr));
01287 }
01288 return f ? f : &ast_null_frame;
01289 }
01290 rtp->lastrxformat = rtp->f.subclass = rtpPT.code;
01291 rtp->f.frametype = (rtp->f.subclass < AST_FORMAT_MAX_AUDIO) ? AST_FRAME_VOICE : AST_FRAME_VIDEO;
01292
01293 if (!rtp->lastrxts)
01294 rtp->lastrxts = timestamp;
01295
01296 rtp->rxseqno = seqno;
01297
01298
01299 rtp->lastrxts = timestamp;
01300
01301 rtp->f.mallocd = 0;
01302 rtp->f.datalen = res - hdrlen;
01303 rtp->f.data = rtp->rawdata + hdrlen + AST_FRIENDLY_OFFSET;
01304 rtp->f.offset = hdrlen + AST_FRIENDLY_OFFSET;
01305 rtp->f.seqno = seqno;
01306 if (rtp->f.subclass < AST_FORMAT_MAX_AUDIO) {
01307 rtp->f.samples = ast_codec_get_samples(&rtp->f);
01308 if (rtp->f.subclass == AST_FORMAT_SLINEAR)
01309 ast_frame_byteswap_be(&rtp->f);
01310 calc_rxstamp(&rtp->f.delivery, rtp, timestamp, mark);
01311
01312 ast_set_flag(&rtp->f, AST_FRFLAG_HAS_TIMING_INFO);
01313 rtp->f.ts = timestamp / 8;
01314 rtp->f.len = rtp->f.samples / (ast_format_rate(rtp->f.subclass) / 1000);
01315 } else {
01316
01317 if (!rtp->lastividtimestamp)
01318 rtp->lastividtimestamp = timestamp;
01319 rtp->f.samples = timestamp - rtp->lastividtimestamp;
01320 rtp->lastividtimestamp = timestamp;
01321 rtp->f.delivery.tv_sec = 0;
01322 rtp->f.delivery.tv_usec = 0;
01323 if (mark)
01324 rtp->f.subclass |= 0x1;
01325
01326 }
01327 rtp->f.src = "RTP";
01328 return &rtp->f;
01329 }
01330
01331
01332
01333 static struct {
01334 struct rtpPayloadType payloadType;
01335 char* type;
01336 char* subtype;
01337 } mimeTypes[] = {
01338 {{1, AST_FORMAT_G723_1}, "audio", "G723"},
01339 {{1, AST_FORMAT_GSM}, "audio", "GSM"},
01340 {{1, AST_FORMAT_ULAW}, "audio", "PCMU"},
01341 {{1, AST_FORMAT_ULAW}, "audio", "G711U"},
01342 {{1, AST_FORMAT_ALAW}, "audio", "PCMA"},
01343 {{1, AST_FORMAT_ALAW}, "audio", "G711A"},
01344 {{1, AST_FORMAT_G726}, "audio", "G726-32"},
01345 {{1, AST_FORMAT_ADPCM}, "audio", "DVI4"},
01346 {{1, AST_FORMAT_SLINEAR}, "audio", "L16"},
01347 {{1, AST_FORMAT_LPC10}, "audio", "LPC"},
01348 {{1, AST_FORMAT_G729A}, "audio", "G729"},
01349 {{1, AST_FORMAT_G729A}, "audio", "G729A"},
01350 {{1, AST_FORMAT_SPEEX}, "audio", "speex"},
01351 {{1, AST_FORMAT_ILBC}, "audio", "iLBC"},
01352 {{1, AST_FORMAT_G722}, "audio", "G722"},
01353 {{1, AST_FORMAT_G726_AAL2}, "audio", "AAL2-G726-32"},
01354 {{0, AST_RTP_DTMF}, "audio", "telephone-event"},
01355 {{0, AST_RTP_CISCO_DTMF}, "audio", "cisco-telephone-event"},
01356 {{0, AST_RTP_CN}, "audio", "CN"},
01357 {{1, AST_FORMAT_JPEG}, "video", "JPEG"},
01358 {{1, AST_FORMAT_PNG}, "video", "PNG"},
01359 {{1, AST_FORMAT_H261}, "video", "H261"},
01360 {{1, AST_FORMAT_H263}, "video", "H263"},
01361 {{1, AST_FORMAT_H263_PLUS}, "video", "h263-1998"},
01362 {{1, AST_FORMAT_H264}, "video", "H264"},
01363 };
01364
01365
01366
01367
01368 static struct rtpPayloadType static_RTP_PT[MAX_RTP_PT] = {
01369 [0] = {1, AST_FORMAT_ULAW},
01370 #ifdef USE_DEPRECATED_G726
01371 [2] = {1, AST_FORMAT_G726},
01372 #endif
01373 [3] = {1, AST_FORMAT_GSM},
01374 [4] = {1, AST_FORMAT_G723_1},
01375 [5] = {1, AST_FORMAT_ADPCM},
01376 [6] = {1, AST_FORMAT_ADPCM},
01377 [7] = {1, AST_FORMAT_LPC10},
01378 [8] = {1, AST_FORMAT_ALAW},
01379 [9] = {1, AST_FORMAT_G722},
01380 [10] = {1, AST_FORMAT_SLINEAR},
01381 [11] = {1, AST_FORMAT_SLINEAR},
01382 [13] = {0, AST_RTP_CN},
01383 [16] = {1, AST_FORMAT_ADPCM},
01384 [17] = {1, AST_FORMAT_ADPCM},
01385 [18] = {1, AST_FORMAT_G729A},
01386 [19] = {0, AST_RTP_CN},
01387 [26] = {1, AST_FORMAT_JPEG},
01388 [31] = {1, AST_FORMAT_H261},
01389 [34] = {1, AST_FORMAT_H263},
01390 [103] = {1, AST_FORMAT_H263_PLUS},
01391 [97] = {1, AST_FORMAT_ILBC},
01392 [99] = {1, AST_FORMAT_H264},
01393 [101] = {0, AST_RTP_DTMF},
01394 [110] = {1, AST_FORMAT_SPEEX},
01395 [111] = {1, AST_FORMAT_G726},
01396 [112] = {1, AST_FORMAT_G726_AAL2},
01397 [121] = {0, AST_RTP_CISCO_DTMF},
01398 };
01399
01400 void ast_rtp_pt_clear(struct ast_rtp* rtp)
01401 {
01402 int i;
01403
01404 if (!rtp)
01405 return;
01406
01407 ast_mutex_lock(&rtp->bridge_lock);
01408
01409 for (i = 0; i < MAX_RTP_PT; ++i) {
01410 rtp->current_RTP_PT[i].isAstFormat = 0;
01411 rtp->current_RTP_PT[i].code = 0;
01412 }
01413
01414 rtp->rtp_lookup_code_cache_isAstFormat = 0;
01415 rtp->rtp_lookup_code_cache_code = 0;
01416 rtp->rtp_lookup_code_cache_result = 0;
01417
01418 ast_mutex_unlock(&rtp->bridge_lock);
01419 }
01420
01421 void ast_rtp_pt_default(struct ast_rtp* rtp)
01422 {
01423 int i;
01424
01425 ast_mutex_lock(&rtp->bridge_lock);
01426
01427
01428 for (i = 0; i < MAX_RTP_PT; ++i) {
01429 rtp->current_RTP_PT[i].isAstFormat = static_RTP_PT[i].isAstFormat;
01430 rtp->current_RTP_PT[i].code = static_RTP_PT[i].code;
01431 }
01432
01433 rtp->rtp_lookup_code_cache_isAstFormat = 0;
01434 rtp->rtp_lookup_code_cache_code = 0;
01435 rtp->rtp_lookup_code_cache_result = 0;
01436
01437 ast_mutex_unlock(&rtp->bridge_lock);
01438 }
01439
01440 void ast_rtp_pt_copy(struct ast_rtp *dest, struct ast_rtp *src)
01441 {
01442 unsigned int i;
01443
01444 ast_mutex_lock(&dest->bridge_lock);
01445 ast_mutex_lock(&src->bridge_lock);
01446
01447 for (i=0; i < MAX_RTP_PT; ++i) {
01448 dest->current_RTP_PT[i].isAstFormat =
01449 src->current_RTP_PT[i].isAstFormat;
01450 dest->current_RTP_PT[i].code =
01451 src->current_RTP_PT[i].code;
01452 }
01453 dest->rtp_lookup_code_cache_isAstFormat = 0;
01454 dest->rtp_lookup_code_cache_code = 0;
01455 dest->rtp_lookup_code_cache_result = 0;
01456
01457 ast_mutex_unlock(&src->bridge_lock);
01458 ast_mutex_unlock(&dest->bridge_lock);
01459 }
01460
01461
01462 static struct ast_rtp_protocol *get_proto(struct ast_channel *chan)
01463 {
01464 struct ast_rtp_protocol *cur = NULL;
01465
01466 AST_LIST_LOCK(&protos);
01467 AST_LIST_TRAVERSE(&protos, cur, list) {
01468 if (cur->type == chan->tech->type)
01469 break;
01470 }
01471 AST_LIST_UNLOCK(&protos);
01472
01473 return cur;
01474 }
01475
01476 int ast_rtp_early_bridge(struct ast_channel *dest, struct ast_channel *src)
01477 {
01478 struct ast_rtp *destp = NULL, *srcp = NULL;
01479 struct ast_rtp *vdestp = NULL, *vsrcp = NULL;
01480 struct ast_rtp_protocol *destpr = NULL, *srcpr = NULL;
01481 enum ast_rtp_get_result audio_dest_res = AST_RTP_GET_FAILED, video_dest_res = AST_RTP_GET_FAILED;
01482 enum ast_rtp_get_result audio_src_res = AST_RTP_GET_FAILED, video_src_res = AST_RTP_GET_FAILED;
01483 int srccodec, destcodec, nat_active = 0;
01484
01485
01486 ast_channel_lock(dest);
01487 if (src) {
01488 while(ast_channel_trylock(src)) {
01489 ast_channel_unlock(dest);
01490 usleep(1);
01491 ast_channel_lock(dest);
01492 }
01493 }
01494
01495
01496 destpr = get_proto(dest);
01497 if (src)
01498 srcpr = get_proto(src);
01499 if (!destpr) {
01500 if (option_debug)
01501 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", dest->name);
01502 ast_channel_unlock(dest);
01503 if (src)
01504 ast_channel_unlock(src);
01505 return 0;
01506 }
01507 if (!srcpr) {
01508 if (option_debug)
01509 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", src ? src->name : "<unspecified>");
01510 ast_channel_unlock(dest);
01511 if (src)
01512 ast_channel_unlock(src);
01513 return 0;
01514 }
01515
01516
01517 audio_dest_res = destpr->get_rtp_info(dest, &destp);
01518 video_dest_res = destpr->get_vrtp_info ? destpr->get_vrtp_info(dest, &vdestp) : AST_RTP_GET_FAILED;
01519 if (srcpr) {
01520 audio_src_res = srcpr->get_rtp_info(src, &srcp);
01521 video_src_res = srcpr->get_vrtp_info ? srcpr->get_vrtp_info(src, &vsrcp) : AST_RTP_GET_FAILED;
01522 }
01523
01524
01525 if (audio_dest_res != AST_RTP_TRY_NATIVE) {
01526
01527 ast_channel_unlock(dest);
01528 if (src)
01529 ast_channel_unlock(src);
01530 return 0;
01531 }
01532 if (audio_src_res == AST_RTP_TRY_NATIVE && srcpr->get_codec)
01533 srccodec = srcpr->get_codec(src);
01534 else
01535 srccodec = 0;
01536 if (audio_dest_res == AST_RTP_TRY_NATIVE && destpr->get_codec)
01537 destcodec = destpr->get_codec(dest);
01538 else
01539 destcodec = 0;
01540
01541 if (!(srccodec & destcodec)) {
01542 ast_channel_unlock(dest);
01543 if (src)
01544 ast_channel_unlock(src);
01545 return 0;
01546 }
01547
01548 if (audio_src_res == AST_RTP_TRY_NATIVE && !srcp->them.sin_addr.s_addr)
01549 srcp = NULL;
01550
01551 if (srcp && (srcp->nat || ast_test_flag(srcp, FLAG_NAT_ACTIVE)))
01552 nat_active = 1;
01553
01554 if (destpr->set_rtp_peer(dest, srcp, vsrcp, srccodec, nat_active))
01555 ast_log(LOG_WARNING, "Channel '%s' failed to setup early bridge to '%s'\n", dest->name, src ? src->name : "<unspecified>");
01556 ast_channel_unlock(dest);
01557 if (src)
01558 ast_channel_unlock(src);
01559 if (option_debug)
01560 ast_log(LOG_DEBUG, "Setting early bridge SDP of '%s' with that of '%s'\n", dest->name, src ? src->name : "<unspecified>");
01561 return 1;
01562 }
01563
01564 int ast_rtp_make_compatible(struct ast_channel *dest, struct ast_channel *src, int media)
01565 {
01566 struct ast_rtp *destp = NULL, *srcp = NULL;
01567 struct ast_rtp *vdestp = NULL, *vsrcp = NULL;
01568 struct ast_rtp_protocol *destpr = NULL, *srcpr = NULL;
01569 enum ast_rtp_get_result audio_dest_res = AST_RTP_GET_FAILED, video_dest_res = AST_RTP_GET_FAILED;
01570 enum ast_rtp_get_result audio_src_res = AST_RTP_GET_FAILED, video_src_res = AST_RTP_GET_FAILED;
01571 int srccodec, destcodec;
01572
01573
01574 ast_channel_lock(dest);
01575 while(ast_channel_trylock(src)) {
01576 ast_channel_unlock(dest);
01577 usleep(1);
01578 ast_channel_lock(dest);
01579 }
01580
01581
01582 if (!(destpr = get_proto(dest))) {
01583 if (option_debug)
01584 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", dest->name);
01585 ast_channel_unlock(dest);
01586 ast_channel_unlock(src);
01587 return 0;
01588 }
01589 if (!(srcpr = get_proto(src))) {
01590 if (option_debug)
01591 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", src->name);
01592 ast_channel_unlock(dest);
01593 ast_channel_unlock(src);
01594 return 0;
01595 }
01596
01597
01598 audio_dest_res = destpr->get_rtp_info(dest, &destp);
01599 video_dest_res = destpr->get_vrtp_info ? destpr->get_vrtp_info(dest, &vdestp) : AST_RTP_GET_FAILED;
01600 audio_src_res = srcpr->get_rtp_info(src, &srcp);
01601 video_src_res = srcpr->get_vrtp_info ? srcpr->get_vrtp_info(src, &vsrcp) : AST_RTP_GET_FAILED;
01602
01603
01604 if (srcpr->get_codec)
01605 srccodec = srcpr->get_codec(src);
01606 else
01607 srccodec = 0;
01608 if (destpr->get_codec)
01609 destcodec = destpr->get_codec(dest);
01610 else
01611 destcodec = 0;
01612
01613
01614 if (audio_dest_res != AST_RTP_TRY_NATIVE || audio_src_res != AST_RTP_TRY_NATIVE || !(srccodec & destcodec)) {
01615
01616 ast_channel_unlock(dest);
01617 ast_channel_unlock(src);
01618 return 0;
01619 }
01620 ast_rtp_pt_copy(destp, srcp);
01621 if (vdestp && vsrcp)
01622 ast_rtp_pt_copy(vdestp, vsrcp);
01623 if (media) {
01624
01625 if (destpr->set_rtp_peer(dest, srcp, vsrcp, srccodec, ast_test_flag(srcp, FLAG_NAT_ACTIVE)))
01626 ast_log(LOG_WARNING, "Channel '%s' failed to setup early bridge to '%s'\n", dest->name, src->name);
01627 }
01628 ast_channel_unlock(dest);
01629 ast_channel_unlock(src);
01630 if (option_debug)
01631 ast_log(LOG_DEBUG, "Seeded SDP of '%s' with that of '%s'\n", dest->name, src->name);
01632 return 1;
01633 }
01634
01635
01636
01637
01638
01639 void ast_rtp_set_m_type(struct ast_rtp* rtp, int pt)
01640 {
01641 if (pt < 0 || pt > MAX_RTP_PT || static_RTP_PT[pt].code == 0)
01642 return;
01643
01644 ast_mutex_lock(&rtp->bridge_lock);
01645 rtp->current_RTP_PT[pt] = static_RTP_PT[pt];
01646 ast_mutex_unlock(&rtp->bridge_lock);
01647 }
01648
01649
01650
01651 void ast_rtp_unset_m_type(struct ast_rtp* rtp, int pt)
01652 {
01653 if (pt < 0 || pt > MAX_RTP_PT)
01654 return;
01655
01656 ast_mutex_lock(&rtp->bridge_lock);
01657 rtp->current_RTP_PT[pt].isAstFormat = 0;
01658 rtp->current_RTP_PT[pt].code = 0;
01659 ast_mutex_unlock(&rtp->bridge_lock);
01660 }
01661
01662
01663
01664
01665
01666 int ast_rtp_set_rtpmap_type(struct ast_rtp *rtp, int pt,
01667 char *mimeType, char *mimeSubtype,
01668 enum ast_rtp_options options)
01669 {
01670 unsigned int i;
01671 int found = 0;
01672
01673 if (pt < 0 || pt > MAX_RTP_PT)
01674 return -1;
01675
01676 ast_mutex_lock(&rtp->bridge_lock);
01677
01678 for (i = 0; i < sizeof(mimeTypes)/sizeof(mimeTypes[0]); ++i) {
01679 if (strcasecmp(mimeSubtype, mimeTypes[i].subtype) == 0 &&
01680 strcasecmp(mimeType, mimeTypes[i].type) == 0) {
01681 found = 1;
01682 rtp->current_RTP_PT[pt] = mimeTypes[i].payloadType;
01683 if ((mimeTypes[i].payloadType.code == AST_FORMAT_G726) &&
01684 mimeTypes[i].payloadType.isAstFormat &&
01685 (options & AST_RTP_OPT_G726_NONSTANDARD))
01686 rtp->current_RTP_PT[pt].code = AST_FORMAT_G726_AAL2;
01687 break;
01688 }
01689 }
01690
01691 ast_mutex_unlock(&rtp->bridge_lock);
01692
01693 return (found ? 0 : -1);
01694 }
01695
01696
01697
01698 void ast_rtp_get_current_formats(struct ast_rtp* rtp,
01699 int* astFormats, int* nonAstFormats)
01700 {
01701 int pt;
01702
01703 ast_mutex_lock(&rtp->bridge_lock);
01704
01705 *astFormats = *nonAstFormats = 0;
01706 for (pt = 0; pt < MAX_RTP_PT; ++pt) {
01707 if (rtp->current_RTP_PT[pt].isAstFormat) {
01708 *astFormats |= rtp->current_RTP_PT[pt].code;
01709 } else {
01710 *nonAstFormats |= rtp->current_RTP_PT[pt].code;
01711 }
01712 }
01713
01714 ast_mutex_unlock(&rtp->bridge_lock);
01715
01716 return;
01717 }
01718
01719 struct rtpPayloadType ast_rtp_lookup_pt(struct ast_rtp* rtp, int pt)
01720 {
01721 struct rtpPayloadType result;
01722
01723 result.isAstFormat = result.code = 0;
01724
01725 if (pt < 0 || pt > MAX_RTP_PT)
01726 return result;
01727
01728
01729 ast_mutex_lock(&rtp->bridge_lock);
01730 result = rtp->current_RTP_PT[pt];
01731 ast_mutex_unlock(&rtp->bridge_lock);
01732
01733
01734 if (!result.code)
01735 result = static_RTP_PT[pt];
01736
01737 return result;
01738 }
01739
01740
01741 int ast_rtp_lookup_code(struct ast_rtp* rtp, const int isAstFormat, const int code)
01742 {
01743 int pt = 0;
01744
01745 ast_mutex_lock(&rtp->bridge_lock);
01746
01747 if (isAstFormat == rtp->rtp_lookup_code_cache_isAstFormat &&
01748 code == rtp->rtp_lookup_code_cache_code) {
01749
01750 pt = rtp->rtp_lookup_code_cache_result;
01751 ast_mutex_unlock(&rtp->bridge_lock);
01752 return pt;
01753 }
01754
01755
01756 for (pt = 0; pt < MAX_RTP_PT; ++pt) {
01757 if (rtp->current_RTP_PT[pt].code == code && rtp->current_RTP_PT[pt].isAstFormat == isAstFormat) {
01758 rtp->rtp_lookup_code_cache_isAstFormat = isAstFormat;
01759 rtp->rtp_lookup_code_cache_code = code;
01760 rtp->rtp_lookup_code_cache_result = pt;
01761 ast_mutex_unlock(&rtp->bridge_lock);
01762 return pt;
01763 }
01764 }
01765
01766
01767 for (pt = 0; pt < MAX_RTP_PT; ++pt) {
01768 if (static_RTP_PT[pt].code == code && static_RTP_PT[pt].isAstFormat == isAstFormat) {
01769 rtp->rtp_lookup_code_cache_isAstFormat = isAstFormat;
01770 rtp->rtp_lookup_code_cache_code = code;
01771 rtp->rtp_lookup_code_cache_result = pt;
01772 ast_mutex_unlock(&rtp->bridge_lock);
01773 return pt;
01774 }
01775 }
01776
01777 ast_mutex_unlock(&rtp->bridge_lock);
01778
01779 return -1;
01780 }
01781
01782 const char *ast_rtp_lookup_mime_subtype(const int isAstFormat, const int code,
01783 enum ast_rtp_options options)
01784 {
01785 unsigned int i;
01786
01787 for (i = 0; i < sizeof(mimeTypes)/sizeof(mimeTypes[0]); ++i) {
01788 if ((mimeTypes[i].payloadType.code == code) && (mimeTypes[i].payloadType.isAstFormat == isAstFormat)) {
01789 if (isAstFormat &&
01790 (code == AST_FORMAT_G726_AAL2) &&
01791 (options & AST_RTP_OPT_G726_NONSTANDARD))
01792 return "G726-32";
01793 else
01794 return mimeTypes[i].subtype;
01795 }
01796 }
01797
01798 return "";
01799 }
01800
01801 char *ast_rtp_lookup_mime_multiple(char *buf, size_t size, const int capability,
01802 const int isAstFormat, enum ast_rtp_options options)
01803 {
01804 int format;
01805 unsigned len;
01806 char *end = buf;
01807 char *start = buf;
01808
01809 if (!buf || !size)
01810 return NULL;
01811
01812 snprintf(end, size, "0x%x (", capability);
01813
01814 len = strlen(end);
01815 end += len;
01816 size -= len;
01817 start = end;
01818
01819 for (format = 1; format < AST_RTP_MAX; format <<= 1) {
01820 if (capability & format) {
01821 const char *name = ast_rtp_lookup_mime_subtype(isAstFormat, format, options);
01822
01823 snprintf(end, size, "%s|", name);
01824 len = strlen(end);
01825 end += len;
01826 size -= len;
01827 }
01828 }
01829
01830 if (start == end)
01831 snprintf(start, size, "nothing)");
01832 else if (size > 1)
01833 *(end -1) = ')';
01834
01835 return buf;
01836 }
01837
01838 static int rtp_socket(void)
01839 {
01840 int s;
01841 long flags;
01842 s = socket(AF_INET, SOCK_DGRAM, 0);
01843 if (s > -1) {
01844 flags = fcntl(s, F_GETFL);
01845 fcntl(s, F_SETFL, flags | O_NONBLOCK);
01846 #ifdef SO_NO_CHECK
01847 if (nochecksums)
01848 setsockopt(s, SOL_SOCKET, SO_NO_CHECK, &nochecksums, sizeof(nochecksums));
01849 #endif
01850 }
01851 return s;
01852 }
01853
01854
01855
01856
01857
01858
01859 static struct ast_rtcp *ast_rtcp_new(void)
01860 {
01861 struct ast_rtcp *rtcp;
01862
01863 if (!(rtcp = ast_calloc(1, sizeof(*rtcp))))
01864 return NULL;
01865 rtcp->s = rtp_socket();
01866 rtcp->us.sin_family = AF_INET;
01867 rtcp->them.sin_family = AF_INET;
01868 rtcp->schedid = -1;
01869
01870 if (rtcp->s < 0) {
01871 free(rtcp);
01872 ast_log(LOG_WARNING, "Unable to allocate RTCP socket: %s\n", strerror(errno));
01873 return NULL;
01874 }
01875
01876 return rtcp;
01877 }
01878
01879
01880
01881
01882
01883 void ast_rtp_new_init(struct ast_rtp *rtp)
01884 {
01885 ast_mutex_init(&rtp->bridge_lock);
01886
01887 rtp->them.sin_family = AF_INET;
01888 rtp->us.sin_family = AF_INET;
01889 rtp->ssrc = ast_random();
01890 rtp->seqno = ast_random() & 0xffff;
01891 ast_set_flag(rtp, FLAG_HAS_DTMF);
01892
01893 return;
01894 }
01895
01896 struct ast_rtp *ast_rtp_new_with_bindaddr(struct sched_context *sched, struct io_context *io, int rtcpenable, int callbackmode, struct in_addr addr)
01897 {
01898 struct ast_rtp *rtp;
01899 int x;
01900 int first;
01901 int startplace;
01902
01903 if (!(rtp = ast_calloc(1, sizeof(*rtp))))
01904 return NULL;
01905
01906 ast_rtp_new_init(rtp);
01907
01908 rtp->s = rtp_socket();
01909 if (rtp->s < 0) {
01910 free(rtp);
01911 ast_log(LOG_ERROR, "Unable to allocate socket: %s\n", strerror(errno));
01912 return NULL;
01913 }
01914 if (sched && rtcpenable) {
01915 rtp->sched = sched;
01916 rtp->rtcp = ast_rtcp_new();
01917 }
01918
01919
01920 x = (ast_random() % (rtpend-rtpstart)) + rtpstart;
01921 x = x & ~1;
01922
01923 startplace = x;
01924
01925 for (;;) {
01926
01927 rtp->us.sin_port = htons(x);
01928 rtp->us.sin_addr = addr;
01929
01930 if (rtp->rtcp) {
01931 rtp->rtcp->us.sin_port = htons(x + 1);
01932 rtp->rtcp->us.sin_addr = addr;
01933 }
01934
01935 if (!(first = bind(rtp->s, (struct sockaddr *)&rtp->us, sizeof(rtp->us))) &&
01936 (!rtp->rtcp || !bind(rtp->rtcp->s, (struct sockaddr *)&rtp->rtcp->us, sizeof(rtp->rtcp->us))))
01937 break;
01938 if (!first) {
01939
01940 close(rtp->s);
01941 rtp->s = rtp_socket();
01942 }
01943 if (errno != EADDRINUSE) {
01944
01945 ast_log(LOG_ERROR, "Unexpected bind error: %s\n", strerror(errno));
01946 close(rtp->s);
01947 if (rtp->rtcp) {
01948 close(rtp->rtcp->s);
01949 free(rtp->rtcp);
01950 }
01951 free(rtp);
01952 return NULL;
01953 }
01954
01955 x += 2;
01956
01957 if (x > rtpend)
01958
01959 x = (rtpstart + 1) & ~1;
01960
01961 if (x == startplace) {
01962
01963 ast_log(LOG_ERROR, "No RTP ports remaining. Can't setup media stream for this call.\n");
01964 close(rtp->s);
01965 if (rtp->rtcp) {
01966 close(rtp->rtcp->s);
01967 free(rtp->rtcp);
01968 }
01969 free(rtp);
01970 return NULL;
01971 }
01972 }
01973 rtp->sched = sched;
01974 rtp->io = io;
01975 if (callbackmode) {
01976 rtp->ioid = ast_io_add(rtp->io, rtp->s, rtpread, AST_IO_IN, rtp);
01977 ast_set_flag(rtp, FLAG_CALLBACK_MODE);
01978 }
01979 ast_rtp_pt_default(rtp);
01980 return rtp;
01981 }
01982
01983 struct ast_rtp *ast_rtp_new(struct sched_context *sched, struct io_context *io, int rtcpenable, int callbackmode)
01984 {
01985 struct in_addr ia;
01986
01987 memset(&ia, 0, sizeof(ia));
01988 return ast_rtp_new_with_bindaddr(sched, io, rtcpenable, callbackmode, ia);
01989 }
01990
01991 int ast_rtp_settos(struct ast_rtp *rtp, int tos)
01992 {
01993 int res;
01994
01995 if ((res = setsockopt(rtp->s, IPPROTO_IP, IP_TOS, &tos, sizeof(tos))))
01996 ast_log(LOG_WARNING, "Unable to set TOS to %d\n", tos);
01997 return res;
01998 }
01999
02000 void ast_rtp_new_source(struct ast_rtp *rtp)
02001 {
02002 rtp->set_marker_bit = 1;
02003 return;
02004 }
02005
02006 void ast_rtp_set_peer(struct ast_rtp *rtp, struct sockaddr_in *them)
02007 {
02008 rtp->them.sin_port = them->sin_port;
02009 rtp->them.sin_addr = them->sin_addr;
02010 if (rtp->rtcp) {
02011 rtp->rtcp->them.sin_port = htons(ntohs(them->sin_port) + 1);
02012 rtp->rtcp->them.sin_addr = them->sin_addr;
02013 }
02014 rtp->rxseqno = 0;
02015 }
02016
02017 int ast_rtp_get_peer(struct ast_rtp *rtp, struct sockaddr_in *them)
02018 {
02019 if ((them->sin_family != AF_INET) ||
02020 (them->sin_port != rtp->them.sin_port) ||
02021 (them->sin_addr.s_addr != rtp->them.sin_addr.s_addr)) {
02022 them->sin_family = AF_INET;
02023 them->sin_port = rtp->them.sin_port;
02024 them->sin_addr = rtp->them.sin_addr;
02025 return 1;
02026 }
02027 return 0;
02028 }
02029
02030 void ast_rtp_get_us(struct ast_rtp *rtp, struct sockaddr_in *us)
02031 {
02032 *us = rtp->us;
02033 }
02034
02035 struct ast_rtp *ast_rtp_get_bridged(struct ast_rtp *rtp)
02036 {
02037 struct ast_rtp *bridged = NULL;
02038
02039 ast_mutex_lock(&rtp->bridge_lock);
02040 bridged = rtp->bridged;
02041 ast_mutex_unlock(&rtp->bridge_lock);
02042
02043 return bridged;
02044 }
02045
02046 void ast_rtp_stop(struct ast_rtp *rtp)
02047 {
02048 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02049
02050 memset(&rtp->them.sin_addr, 0, sizeof(rtp->them.sin_addr));
02051 memset(&rtp->them.sin_port, 0, sizeof(rtp->them.sin_port));
02052 if (rtp->rtcp) {
02053 memset(&rtp->rtcp->them.sin_addr, 0, sizeof(rtp->rtcp->them.sin_addr));
02054 memset(&rtp->rtcp->them.sin_port, 0, sizeof(rtp->rtcp->them.sin_port));
02055 }
02056
02057 ast_clear_flag(rtp, FLAG_P2P_SENT_MARK);
02058 }
02059
02060 void ast_rtp_reset(struct ast_rtp *rtp)
02061 {
02062 memset(&rtp->rxcore, 0, sizeof(rtp->rxcore));
02063 memset(&rtp->txcore, 0, sizeof(rtp->txcore));
02064 memset(&rtp->dtmfmute, 0, sizeof(rtp->dtmfmute));
02065 rtp->lastts = 0;
02066 rtp->lastdigitts = 0;
02067 rtp->lastrxts = 0;
02068 rtp->lastividtimestamp = 0;
02069 rtp->lastovidtimestamp = 0;
02070 rtp->lasteventseqn = 0;
02071 rtp->lastevent = 0;
02072 rtp->lasttxformat = 0;
02073 rtp->lastrxformat = 0;
02074 rtp->dtmfcount = 0;
02075 rtp->dtmfsamples = 0;
02076 rtp->seqno = 0;
02077 rtp->rxseqno = 0;
02078 }
02079
02080 char *ast_rtp_get_quality(struct ast_rtp *rtp, struct ast_rtp_quality *qual)
02081 {
02082
02083
02084
02085
02086
02087
02088
02089
02090
02091
02092
02093
02094 if (qual && rtp) {
02095 qual->local_ssrc = rtp->ssrc;
02096 qual->local_jitter = rtp->rxjitter;
02097 qual->local_count = rtp->rxcount;
02098 qual->remote_ssrc = rtp->themssrc;
02099 qual->remote_count = rtp->txcount;
02100 if (rtp->rtcp) {
02101 qual->local_lostpackets = rtp->rtcp->expected_prior - rtp->rtcp->received_prior;
02102 qual->remote_lostpackets = rtp->rtcp->reported_lost;
02103 qual->remote_jitter = rtp->rtcp->reported_jitter / 65536.0;
02104 qual->rtt = rtp->rtcp->rtt;
02105 }
02106 }
02107 if (rtp->rtcp) {
02108 snprintf(rtp->rtcp->quality, sizeof(rtp->rtcp->quality),
02109 "ssrc=%u;themssrc=%u;lp=%u;rxjitter=%f;rxcount=%u;txjitter=%f;txcount=%u;rlp=%u;rtt=%f",
02110 rtp->ssrc,
02111 rtp->themssrc,
02112 rtp->rtcp->expected_prior - rtp->rtcp->received_prior,
02113 rtp->rxjitter,
02114 rtp->rxcount,
02115 (double)rtp->rtcp->reported_jitter / 65536.0,
02116 rtp->txcount,
02117 rtp->rtcp->reported_lost,
02118 rtp->rtcp->rtt);
02119 return rtp->rtcp->quality;
02120 } else
02121 return "<Unknown> - RTP/RTCP has already been destroyed";
02122 }
02123
02124 void ast_rtp_destroy(struct ast_rtp *rtp)
02125 {
02126 if (rtcp_debug_test_addr(&rtp->them) || rtcpstats) {
02127
02128 ast_verbose(" RTP-stats\n");
02129 ast_verbose("* Our Receiver:\n");
02130 ast_verbose(" SSRC: %u\n", rtp->themssrc);
02131 ast_verbose(" Received packets: %u\n", rtp->rxcount);
02132 ast_verbose(" Lost packets: %u\n", rtp->rtcp->expected_prior - rtp->rtcp->received_prior);
02133 ast_verbose(" Jitter: %.4f\n", rtp->rxjitter);
02134 ast_verbose(" Transit: %.4f\n", rtp->rxtransit);
02135 ast_verbose(" RR-count: %u\n", rtp->rtcp->rr_count);
02136 ast_verbose("* Our Sender:\n");
02137 ast_verbose(" SSRC: %u\n", rtp->ssrc);
02138 ast_verbose(" Sent packets: %u\n", rtp->txcount);
02139 ast_verbose(" Lost packets: %u\n", rtp->rtcp->reported_lost);
02140 ast_verbose(" Jitter: %u\n", rtp->rtcp->reported_jitter / (unsigned int)65536.0);
02141 ast_verbose(" SR-count: %u\n", rtp->rtcp->sr_count);
02142 ast_verbose(" RTT: %f\n", rtp->rtcp->rtt);
02143 }
02144
02145 if (rtp->smoother)
02146 ast_smoother_free(rtp->smoother);
02147 if (rtp->ioid)
02148 ast_io_remove(rtp->io, rtp->ioid);
02149 if (rtp->s > -1)
02150 close(rtp->s);
02151 if (rtp->rtcp) {
02152 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02153 close(rtp->rtcp->s);
02154 free(rtp->rtcp);
02155 rtp->rtcp=NULL;
02156 }
02157
02158 ast_mutex_destroy(&rtp->bridge_lock);
02159
02160 free(rtp);
02161 }
02162
02163 static unsigned int calc_txstamp(struct ast_rtp *rtp, struct timeval *delivery)
02164 {
02165 struct timeval t;
02166 long ms;
02167 if (ast_tvzero(rtp->txcore)) {
02168 rtp->txcore = ast_tvnow();
02169
02170 rtp->txcore.tv_usec -= rtp->txcore.tv_usec % 20000;
02171 }
02172
02173 t = (delivery && !ast_tvzero(*delivery)) ? *delivery : ast_tvnow();
02174 ms = ast_tvdiff_ms(t, rtp->txcore);
02175 if (ms < 0)
02176 ms = 0;
02177
02178 rtp->txcore = t;
02179 return (unsigned int) ms;
02180 }
02181
02182
02183 int ast_rtp_senddigit_begin(struct ast_rtp *rtp, char digit)
02184 {
02185 unsigned int *rtpheader;
02186 int hdrlen = 12, res = 0, i = 0, payload = 0;
02187 char data[256];
02188
02189 if ((digit <= '9') && (digit >= '0'))
02190 digit -= '0';
02191 else if (digit == '*')
02192 digit = 10;
02193 else if (digit == '#')
02194 digit = 11;
02195 else if ((digit >= 'A') && (digit <= 'D'))
02196 digit = digit - 'A' + 12;
02197 else if ((digit >= 'a') && (digit <= 'd'))
02198 digit = digit - 'a' + 12;
02199 else {
02200 ast_log(LOG_WARNING, "Don't know how to represent '%c'\n", digit);
02201 return 0;
02202 }
02203
02204
02205 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
02206 return 0;
02207
02208 payload = ast_rtp_lookup_code(rtp, 0, AST_RTP_DTMF);
02209
02210 rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
02211 rtp->send_duration = 160;
02212
02213
02214 rtpheader = (unsigned int *)data;
02215 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (payload << 16) | (rtp->seqno));
02216 rtpheader[1] = htonl(rtp->lastdigitts);
02217 rtpheader[2] = htonl(rtp->ssrc);
02218
02219 for (i = 0; i < 2; i++) {
02220 rtpheader[3] = htonl((digit << 24) | (0xa << 16) | (rtp->send_duration));
02221 res = sendto(rtp->s, (void *) rtpheader, hdrlen + 4, 0, (struct sockaddr *) &rtp->them, sizeof(rtp->them));
02222 if (res < 0)
02223 ast_log(LOG_ERROR, "RTP Transmission error to %s:%u: %s\n",
02224 ast_inet_ntoa(rtp->them.sin_addr),
02225 ntohs(rtp->them.sin_port), strerror(errno));
02226 if (rtp_debug_test_addr(&rtp->them))
02227 ast_verbose("Sent RTP DTMF packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02228 ast_inet_ntoa(rtp->them.sin_addr),
02229 ntohs(rtp->them.sin_port), payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
02230
02231 rtp->seqno++;
02232
02233 rtp->send_duration += 160;
02234
02235 rtpheader[0] = htonl((2 << 30) | (payload << 16) | (rtp->seqno));
02236 }
02237
02238
02239 rtp->sending_digit = 1;
02240 rtp->send_digit = digit;
02241 rtp->send_payload = payload;
02242
02243 return 0;
02244 }
02245
02246
02247 static int ast_rtp_senddigit_continuation(struct ast_rtp *rtp)
02248 {
02249 unsigned int *rtpheader;
02250 int hdrlen = 12, res = 0;
02251 char data[256];
02252
02253 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
02254 return 0;
02255
02256
02257 rtpheader = (unsigned int *)data;
02258 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (rtp->send_payload << 16) | (rtp->seqno));
02259 rtpheader[1] = htonl(rtp->lastdigitts);
02260 rtpheader[2] = htonl(rtp->ssrc);
02261 rtpheader[3] = htonl((rtp->send_digit << 24) | (0xa << 16) | (rtp->send_duration));
02262 rtpheader[0] = htonl((2 << 30) | (rtp->send_payload << 16) | (rtp->seqno));
02263
02264
02265 res = sendto(rtp->s, (void *) rtpheader, hdrlen + 4, 0, (struct sockaddr *) &rtp->them, sizeof(rtp->them));
02266 if (res < 0)
02267 ast_log(LOG_ERROR, "RTP Transmission error to %s:%d: %s\n",
02268 ast_inet_ntoa(rtp->them.sin_addr),
02269 ntohs(rtp->them.sin_port), strerror(errno));
02270 if (rtp_debug_test_addr(&rtp->them))
02271 ast_verbose("Sent RTP DTMF packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02272 ast_inet_ntoa(rtp->them.sin_addr),
02273 ntohs(rtp->them.sin_port), rtp->send_payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
02274
02275
02276 rtp->seqno++;
02277
02278 rtp->send_duration += 160;
02279
02280 return 0;
02281 }
02282
02283
02284 int ast_rtp_senddigit_end(struct ast_rtp *rtp, char digit)
02285 {
02286 unsigned int *rtpheader;
02287 int hdrlen = 12, res = 0, i = 0;
02288 char data[256];
02289
02290
02291 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
02292 return 0;
02293
02294 if ((digit <= '9') && (digit >= '0'))
02295 digit -= '0';
02296 else if (digit == '*')
02297 digit = 10;
02298 else if (digit == '#')
02299 digit = 11;
02300 else if ((digit >= 'A') && (digit <= 'D'))
02301 digit = digit - 'A' + 12;
02302 else if ((digit >= 'a') && (digit <= 'd'))
02303 digit = digit - 'a' + 12;
02304 else {
02305 ast_log(LOG_WARNING, "Don't know how to represent '%c'\n", digit);
02306 return 0;
02307 }
02308
02309 rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
02310
02311 rtpheader = (unsigned int *)data;
02312 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (rtp->send_payload << 16) | (rtp->seqno));
02313 rtpheader[1] = htonl(rtp->lastdigitts);
02314 rtpheader[2] = htonl(rtp->ssrc);
02315 rtpheader[3] = htonl((digit << 24) | (0xa << 16) | (rtp->send_duration));
02316
02317 rtpheader[3] |= htonl((1 << 23));
02318 rtpheader[0] = htonl((2 << 30) | (rtp->send_payload << 16) | (rtp->seqno));
02319
02320 for (i = 0; i < 3; i++) {
02321 res = sendto(rtp->s, (void *) rtpheader, hdrlen + 4, 0, (struct sockaddr *) &rtp->them, sizeof(rtp->them));
02322 if (res < 0)
02323 ast_log(LOG_ERROR, "RTP Transmission error to %s:%d: %s\n",
02324 ast_inet_ntoa(rtp->them.sin_addr),
02325 ntohs(rtp->them.sin_port), strerror(errno));
02326 if (rtp_debug_test_addr(&rtp->them))
02327 ast_verbose("Sent RTP DTMF packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02328 ast_inet_ntoa(rtp->them.sin_addr),
02329 ntohs(rtp->them.sin_port), rtp->send_payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
02330 }
02331 rtp->sending_digit = 0;
02332 rtp->send_digit = 0;
02333
02334 rtp->lastdigitts += 960;
02335 rtp->seqno++;
02336
02337 return res;
02338 }
02339
02340
02341 int ast_rtcp_send_h261fur(void *data)
02342 {
02343 struct ast_rtp *rtp = data;
02344 int res;
02345
02346 rtp->rtcp->sendfur = 1;
02347 res = ast_rtcp_write(data);
02348
02349 return res;
02350 }
02351
02352
02353 static int ast_rtcp_write_sr(const void *data)
02354 {
02355 struct ast_rtp *rtp = (struct ast_rtp *)data;
02356 int res;
02357 int len = 0;
02358 struct timeval now;
02359 unsigned int now_lsw;
02360 unsigned int now_msw;
02361 unsigned int *rtcpheader;
02362 unsigned int lost;
02363 unsigned int extended;
02364 unsigned int expected;
02365 unsigned int expected_interval;
02366 unsigned int received_interval;
02367 int lost_interval;
02368 int fraction;
02369 struct timeval dlsr;
02370 char bdata[512];
02371
02372
02373 if (!rtp || !rtp->rtcp)
02374 return 0;
02375
02376 if (!rtp->rtcp->them.sin_addr.s_addr) {
02377 ast_verbose("RTCP SR transmission error, rtcp halted\n");
02378 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02379 return 0;
02380 }
02381
02382 gettimeofday(&now, NULL);
02383 timeval2ntp(now, &now_msw, &now_lsw);
02384 rtcpheader = (unsigned int *)bdata;
02385 rtcpheader[1] = htonl(rtp->ssrc);
02386 rtcpheader[2] = htonl(now_msw);
02387 rtcpheader[3] = htonl(now_lsw);
02388 rtcpheader[4] = htonl(rtp->lastts);
02389 rtcpheader[5] = htonl(rtp->txcount);
02390 rtcpheader[6] = htonl(rtp->txoctetcount);
02391 len += 28;
02392
02393 extended = rtp->cycles + rtp->lastrxseqno;
02394 expected = extended - rtp->seedrxseqno + 1;
02395 if (rtp->rxcount > expected)
02396 expected += rtp->rxcount - expected;
02397 lost = expected - rtp->rxcount;
02398 expected_interval = expected - rtp->rtcp->expected_prior;
02399 rtp->rtcp->expected_prior = expected;
02400 received_interval = rtp->rxcount - rtp->rtcp->received_prior;
02401 rtp->rtcp->received_prior = rtp->rxcount;
02402 lost_interval = expected_interval - received_interval;
02403 if (expected_interval == 0 || lost_interval <= 0)
02404 fraction = 0;
02405 else
02406 fraction = (lost_interval << 8) / expected_interval;
02407 timersub(&now, &rtp->rtcp->rxlsr, &dlsr);
02408 rtcpheader[7] = htonl(rtp->themssrc);
02409 rtcpheader[8] = htonl(((fraction & 0xff) << 24) | (lost & 0xffffff));
02410 rtcpheader[9] = htonl((rtp->cycles) | ((rtp->lastrxseqno & 0xffff)));
02411 rtcpheader[10] = htonl((unsigned int)(rtp->rxjitter * 65536.));
02412 rtcpheader[11] = htonl(rtp->rtcp->themrxlsr);
02413 rtcpheader[12] = htonl((((dlsr.tv_sec * 1000) + (dlsr.tv_usec / 1000)) * 65536) / 1000);
02414 len += 24;
02415
02416 rtcpheader[0] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_SR << 16) | ((len/4)-1));
02417
02418 if (rtp->rtcp->sendfur) {
02419 rtcpheader[13] = htonl((2 << 30) | (0 << 24) | (RTCP_PT_FUR << 16) | 1);
02420 rtcpheader[14] = htonl(rtp->ssrc);
02421 len += 8;
02422 rtp->rtcp->sendfur = 0;
02423 }
02424
02425
02426
02427 rtcpheader[len/4] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_SDES << 16) | 2);
02428 rtcpheader[(len/4)+1] = htonl(rtp->ssrc);
02429 rtcpheader[(len/4)+2] = htonl(0x01 << 24);
02430 len += 12;
02431
02432 res = sendto(rtp->rtcp->s, (unsigned int *)rtcpheader, len, 0, (struct sockaddr *)&rtp->rtcp->them, sizeof(rtp->rtcp->them));
02433 if (res < 0) {
02434 ast_log(LOG_ERROR, "RTCP SR transmission error to %s:%d, rtcp halted %s\n",ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port), strerror(errno));
02435 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02436 return 0;
02437 }
02438
02439
02440 gettimeofday(&rtp->rtcp->txlsr, NULL);
02441 rtp->rtcp->sr_count++;
02442
02443 rtp->rtcp->lastsrtxcount = rtp->txcount;
02444
02445 if (rtcp_debug_test_addr(&rtp->rtcp->them)) {
02446 ast_verbose("* Sent RTCP SR to %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
02447 ast_verbose(" Our SSRC: %u\n", rtp->ssrc);
02448 ast_verbose(" Sent(NTP): %u.%010u\n", (unsigned int)now.tv_sec, (unsigned int)now.tv_usec*4096);
02449 ast_verbose(" Sent(RTP): %u\n", rtp->lastts);
02450 ast_verbose(" Sent packets: %u\n", rtp->txcount);
02451 ast_verbose(" Sent octets: %u\n", rtp->txoctetcount);
02452 ast_verbose(" Report block:\n");
02453 ast_verbose(" Fraction lost: %u\n", fraction);
02454 ast_verbose(" Cumulative loss: %u\n", lost);
02455 ast_verbose(" IA jitter: %.4f\n", rtp->rxjitter);
02456 ast_verbose(" Their last SR: %u\n", rtp->rtcp->themrxlsr);
02457 ast_verbose(" DLSR: %4.4f (sec)\n\n", (double)(ntohl(rtcpheader[12])/65536.0));
02458 }
02459 return res;
02460 }
02461
02462
02463 static int ast_rtcp_write_rr(const void *data)
02464 {
02465 struct ast_rtp *rtp = (struct ast_rtp *)data;
02466 int res;
02467 int len = 32;
02468 unsigned int lost;
02469 unsigned int extended;
02470 unsigned int expected;
02471 unsigned int expected_interval;
02472 unsigned int received_interval;
02473 int lost_interval;
02474 struct timeval now;
02475 unsigned int *rtcpheader;
02476 char bdata[1024];
02477 struct timeval dlsr;
02478 int fraction;
02479
02480 if (!rtp || !rtp->rtcp || (&rtp->rtcp->them.sin_addr == 0))
02481 return 0;
02482
02483 if (!rtp->rtcp->them.sin_addr.s_addr) {
02484 ast_log(LOG_ERROR, "RTCP RR transmission error, rtcp halted\n");
02485 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02486 return 0;
02487 }
02488
02489 extended = rtp->cycles + rtp->lastrxseqno;
02490 expected = extended - rtp->seedrxseqno + 1;
02491 lost = expected - rtp->rxcount;
02492 expected_interval = expected - rtp->rtcp->expected_prior;
02493 rtp->rtcp->expected_prior = expected;
02494 received_interval = rtp->rxcount - rtp->rtcp->received_prior;
02495 rtp->rtcp->received_prior = rtp->rxcount;
02496 lost_interval = expected_interval - received_interval;
02497 if (expected_interval == 0 || lost_interval <= 0)
02498 fraction = 0;
02499 else
02500 fraction = (lost_interval << 8) / expected_interval;
02501 gettimeofday(&now, NULL);
02502 timersub(&now, &rtp->rtcp->rxlsr, &dlsr);
02503 rtcpheader = (unsigned int *)bdata;
02504 rtcpheader[0] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_RR << 16) | ((len/4)-1));
02505 rtcpheader[1] = htonl(rtp->ssrc);
02506 rtcpheader[2] = htonl(rtp->themssrc);
02507 rtcpheader[3] = htonl(((fraction & 0xff) << 24) | (lost & 0xffffff));
02508 rtcpheader[4] = htonl((rtp->cycles) | ((rtp->lastrxseqno & 0xffff)));
02509 rtcpheader[5] = htonl((unsigned int)(rtp->rxjitter * 65536.));
02510 rtcpheader[6] = htonl(rtp->rtcp->themrxlsr);
02511 rtcpheader[7] = htonl((((dlsr.tv_sec * 1000) + (dlsr.tv_usec / 1000)) * 65536) / 1000);
02512
02513 if (rtp->rtcp->sendfur) {
02514 rtcpheader[8] = htonl((2 << 30) | (0 << 24) | (RTCP_PT_FUR << 16) | 1);
02515 rtcpheader[9] = htonl(rtp->ssrc);
02516 len += 8;
02517 rtp->rtcp->sendfur = 0;
02518 }
02519
02520
02521
02522 rtcpheader[len/4] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_SDES << 16) | 2);
02523 rtcpheader[(len/4)+1] = htonl(rtp->ssrc);
02524 rtcpheader[(len/4)+2] = htonl(0x01 << 24);
02525 len += 12;
02526
02527 res = sendto(rtp->rtcp->s, (unsigned int *)rtcpheader, len, 0, (struct sockaddr *)&rtp->rtcp->them, sizeof(rtp->rtcp->them));
02528
02529 if (res < 0) {
02530 ast_log(LOG_ERROR, "RTCP RR transmission error, rtcp halted: %s\n",strerror(errno));
02531
02532 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02533 return 0;
02534 }
02535
02536 rtp->rtcp->rr_count++;
02537
02538 if (rtcp_debug_test_addr(&rtp->rtcp->them)) {
02539 ast_verbose("\n* Sending RTCP RR to %s:%d\n"
02540 " Our SSRC: %u\nTheir SSRC: %u\niFraction lost: %d\nCumulative loss: %u\n"
02541 " IA jitter: %.4f\n"
02542 " Their last SR: %u\n"
02543 " DLSR: %4.4f (sec)\n\n",
02544 ast_inet_ntoa(rtp->rtcp->them.sin_addr),
02545 ntohs(rtp->rtcp->them.sin_port),
02546 rtp->ssrc, rtp->themssrc, fraction, lost,
02547 rtp->rxjitter,
02548 rtp->rtcp->themrxlsr,
02549 (double)(ntohl(rtcpheader[7])/65536.0));
02550 }
02551
02552 return res;
02553 }
02554
02555
02556
02557
02558 static int ast_rtcp_write(const void *data)
02559 {
02560 struct ast_rtp *rtp = (struct ast_rtp *)data;
02561 int res;
02562
02563 if (!rtp || !rtp->rtcp)
02564 return 0;
02565
02566 if (rtp->txcount > rtp->rtcp->lastsrtxcount)
02567 res = ast_rtcp_write_sr(data);
02568 else
02569 res = ast_rtcp_write_rr(data);
02570
02571 return res;
02572 }
02573
02574
02575 int ast_rtp_sendcng(struct ast_rtp *rtp, int level)
02576 {
02577 unsigned int *rtpheader;
02578 int hdrlen = 12;
02579 int res;
02580 int payload;
02581 char data[256];
02582 level = 127 - (level & 0x7f);
02583 payload = ast_rtp_lookup_code(rtp, 0, AST_RTP_CN);
02584
02585
02586 if (!rtp->them.sin_addr.s_addr)
02587 return 0;
02588
02589 rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
02590
02591
02592 rtpheader = (unsigned int *)data;
02593 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (payload << 16) | (rtp->seqno++));
02594 rtpheader[1] = htonl(rtp->lastts);
02595 rtpheader[2] = htonl(rtp->ssrc);
02596 data[12] = level;
02597 if (rtp->them.sin_port && rtp->them.sin_addr.s_addr) {
02598 res = sendto(rtp->s, (void *)rtpheader, hdrlen + 1, 0, (struct sockaddr *)&rtp->them, sizeof(rtp->them));
02599 if (res <0)
02600 ast_log(LOG_ERROR, "RTP Comfort Noise Transmission error to %s:%d: %s\n", ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port), strerror(errno));
02601 if (rtp_debug_test_addr(&rtp->them))
02602 ast_verbose("Sent Comfort Noise RTP packet to %s:%u (type %d, seq %u, ts %u, len %d)\n"
02603 , ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port), payload, rtp->seqno, rtp->lastts,res - hdrlen);
02604
02605 }
02606 return 0;
02607 }
02608
02609 static int ast_rtp_raw_write(struct ast_rtp *rtp, struct ast_frame *f, int codec)
02610 {
02611 unsigned char *rtpheader;
02612 int hdrlen = 12;
02613 int res;
02614 unsigned int ms;
02615 int pred;
02616 int mark = 0;
02617
02618 ms = calc_txstamp(rtp, &f->delivery);
02619
02620 if (f->frametype == AST_FRAME_VOICE) {
02621 pred = rtp->lastts + f->samples;
02622
02623
02624 rtp->lastts = rtp->lastts + ms * 8;
02625 if (ast_tvzero(f->delivery)) {
02626
02627
02628 if (abs(rtp->lastts - pred) < MAX_TIMESTAMP_SKEW)
02629 rtp->lastts = pred;
02630 else {
02631 if (option_debug > 2)
02632 ast_log(LOG_DEBUG, "Difference is %d, ms is %d\n", abs(rtp->lastts - pred), ms);
02633 mark = 1;
02634 }
02635 }
02636 } else if (f->frametype == AST_FRAME_VIDEO) {
02637 mark = f->subclass & 0x1;
02638 pred = rtp->lastovidtimestamp + f->samples;
02639
02640 rtp->lastts = rtp->lastts + ms * 90;
02641
02642 if (ast_tvzero(f->delivery)) {
02643 if (abs(rtp->lastts - pred) < 7200) {
02644 rtp->lastts = pred;
02645 rtp->lastovidtimestamp += f->samples;
02646 } else {
02647 if (option_debug > 2)
02648 ast_log(LOG_DEBUG, "Difference is %d, ms is %d (%d), pred/ts/samples %d/%d/%d\n", abs(rtp->lastts - pred), ms, ms * 90, rtp->lastts, pred, f->samples);
02649 rtp->lastovidtimestamp = rtp->lastts;
02650 }
02651 }
02652 }
02653
02654
02655 if (rtp->set_marker_bit) {
02656 mark = 1;
02657 rtp->set_marker_bit = 0;
02658 }
02659
02660
02661
02662
02663 if (rtp->lastts > rtp->lastdigitts)
02664 rtp->lastdigitts = rtp->lastts;
02665
02666 if (ast_test_flag(f, AST_FRFLAG_HAS_TIMING_INFO))
02667 rtp->lastts = f->ts * 8;
02668
02669
02670 rtpheader = (unsigned char *)(f->data - hdrlen);
02671
02672 put_unaligned_uint32(rtpheader, htonl((2 << 30) | (codec << 16) | (rtp->seqno) | (mark << 23)));
02673 put_unaligned_uint32(rtpheader + 4, htonl(rtp->lastts));
02674 put_unaligned_uint32(rtpheader + 8, htonl(rtp->ssrc));
02675
02676 if (rtp->them.sin_port && rtp->them.sin_addr.s_addr) {
02677 res = sendto(rtp->s, (void *)rtpheader, f->datalen + hdrlen, 0, (struct sockaddr *)&rtp->them, sizeof(rtp->them));
02678 if (res <0) {
02679 if (!rtp->nat || (rtp->nat && (ast_test_flag(rtp, FLAG_NAT_ACTIVE) == FLAG_NAT_ACTIVE))) {
02680 ast_log(LOG_DEBUG, "RTP Transmission error of packet %d to %s:%d: %s\n", rtp->seqno, ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port), strerror(errno));
02681 } else if (((ast_test_flag(rtp, FLAG_NAT_ACTIVE) == FLAG_NAT_INACTIVE) || rtpdebug) && !ast_test_flag(rtp, FLAG_NAT_INACTIVE_NOWARN)) {
02682
02683 if (option_debug || rtpdebug)
02684 ast_log(LOG_DEBUG, "RTP NAT: Can't write RTP to private address %s:%d, waiting for other end to send audio...\n", ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port));
02685 ast_set_flag(rtp, FLAG_NAT_INACTIVE_NOWARN);
02686 }
02687 } else {
02688 rtp->txcount++;
02689 rtp->txoctetcount +=(res - hdrlen);
02690
02691 if (rtp->rtcp && rtp->rtcp->schedid < 1)
02692 rtp->rtcp->schedid = ast_sched_add(rtp->sched, ast_rtcp_calc_interval(rtp), ast_rtcp_write, rtp);
02693 }
02694
02695 if (rtp_debug_test_addr(&rtp->them))
02696 ast_verbose("Sent RTP packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02697 ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port), codec, rtp->seqno, rtp->lastts,res - hdrlen);
02698 }
02699
02700 rtp->seqno++;
02701
02702 return 0;
02703 }
02704
02705 int ast_rtp_codec_setpref(struct ast_rtp *rtp, struct ast_codec_pref *prefs)
02706 {
02707 int x;
02708 for (x = 0; x < 32; x++) {
02709 rtp->pref.order[x] = prefs->order[x];
02710 rtp->pref.framing[x] = prefs->framing[x];
02711 }
02712 if (rtp->smoother)
02713 ast_smoother_free(rtp->smoother);
02714 rtp->smoother = NULL;
02715 return 0;
02716 }
02717
02718 struct ast_codec_pref *ast_rtp_codec_getpref(struct ast_rtp *rtp)
02719 {
02720 return &rtp->pref;
02721 }
02722
02723 int ast_rtp_codec_getformat(int pt)
02724 {
02725 if (pt < 0 || pt > MAX_RTP_PT)
02726 return 0;
02727
02728 if (static_RTP_PT[pt].isAstFormat)
02729 return static_RTP_PT[pt].code;
02730 else
02731 return 0;
02732 }
02733
02734 int ast_rtp_write(struct ast_rtp *rtp, struct ast_frame *_f)
02735 {
02736 struct ast_frame *f;
02737 int codec;
02738 int hdrlen = 12;
02739 int subclass;
02740
02741
02742
02743 if (!rtp->them.sin_addr.s_addr)
02744 return 0;
02745
02746
02747 if (!_f->datalen)
02748 return 0;
02749
02750
02751 if ((_f->frametype != AST_FRAME_VOICE) && (_f->frametype != AST_FRAME_VIDEO)) {
02752 ast_log(LOG_WARNING, "RTP can only send voice and video\n");
02753 return -1;
02754 }
02755
02756 subclass = _f->subclass;
02757 if (_f->frametype == AST_FRAME_VIDEO)
02758 subclass &= ~0x1;
02759
02760 codec = ast_rtp_lookup_code(rtp, 1, subclass);
02761 if (codec < 0) {
02762 ast_log(LOG_WARNING, "Don't know how to send format %s packets with RTP\n", ast_getformatname(_f->subclass));
02763 return -1;
02764 }
02765
02766 if (rtp->lasttxformat != subclass) {
02767
02768 if (option_debug)
02769 ast_log(LOG_DEBUG, "Ooh, format changed from %s to %s\n", ast_getformatname(rtp->lasttxformat), ast_getformatname(subclass));
02770 rtp->lasttxformat = subclass;
02771 if (rtp->smoother)
02772 ast_smoother_free(rtp->smoother);
02773 rtp->smoother = NULL;
02774 }
02775
02776 if (!rtp->smoother && subclass != AST_FORMAT_SPEEX && subclass != AST_FORMAT_G723_1) {
02777 struct ast_format_list fmt = ast_codec_pref_getsize(&rtp->pref, subclass);
02778 if (fmt.inc_ms) {
02779 if (!(rtp->smoother = ast_smoother_new((fmt.cur_ms * fmt.fr_len) / fmt.inc_ms))) {
02780 ast_log(LOG_WARNING, "Unable to create smoother: format: %d ms: %d len: %d\n", subclass, fmt.cur_ms, ((fmt.cur_ms * fmt.fr_len) / fmt.inc_ms));
02781 return -1;
02782 }
02783 if (fmt.flags)
02784 ast_smoother_set_flags(rtp->smoother, fmt.flags);
02785 if (option_debug)
02786 ast_log(LOG_DEBUG, "Created smoother: format: %d ms: %d len: %d\n", subclass, fmt.cur_ms, ((fmt.cur_ms * fmt.fr_len) / fmt.inc_ms));
02787 }
02788 }
02789 if (rtp->smoother) {
02790 if (ast_smoother_test_flag(rtp->smoother, AST_SMOOTHER_FLAG_BE)) {
02791 ast_smoother_feed_be(rtp->smoother, _f);
02792 } else {
02793 ast_smoother_feed(rtp->smoother, _f);
02794 }
02795
02796 while ((f = ast_smoother_read(rtp->smoother)) && (f->data)) {
02797 if (f->subclass == AST_FORMAT_G722) {
02798
02799 f->samples /= 2;
02800 }
02801
02802 ast_rtp_raw_write(rtp, f, codec);
02803 }
02804 } else {
02805
02806 if (_f->offset < hdrlen) {
02807 f = ast_frdup(_f);
02808 } else {
02809 f = _f;
02810 }
02811 if (f->data) {
02812 if (f->subclass == AST_FORMAT_G722) {
02813
02814 f->samples /= 2;
02815 }
02816 ast_rtp_raw_write(rtp, f, codec);
02817 }
02818 if (f != _f)
02819 ast_frfree(f);
02820 }
02821
02822 return 0;
02823 }
02824
02825
02826 void ast_rtp_proto_unregister(struct ast_rtp_protocol *proto)
02827 {
02828 AST_LIST_LOCK(&protos);
02829 AST_LIST_REMOVE(&protos, proto, list);
02830 AST_LIST_UNLOCK(&protos);
02831 }
02832
02833
02834 int ast_rtp_proto_register(struct ast_rtp_protocol *proto)
02835 {
02836 struct ast_rtp_protocol *cur;
02837
02838 AST_LIST_LOCK(&protos);
02839 AST_LIST_TRAVERSE(&protos, cur, list) {
02840 if (!strcmp(cur->type, proto->type)) {
02841 ast_log(LOG_WARNING, "Tried to register same protocol '%s' twice\n", cur->type);
02842 AST_LIST_UNLOCK(&protos);
02843 return -1;
02844 }
02845 }
02846 AST_LIST_INSERT_HEAD(&protos, proto, list);
02847 AST_LIST_UNLOCK(&protos);
02848
02849 return 0;
02850 }
02851
02852
02853 static enum ast_bridge_result bridge_native_loop(struct ast_channel *c0, struct ast_channel *c1, struct ast_rtp *p0, struct ast_rtp *p1, struct ast_rtp *vp0, struct ast_rtp *vp1, struct ast_rtp_protocol *pr0, struct ast_rtp_protocol *pr1, int codec0, int codec1, int timeoutms, int flags, struct ast_frame **fo, struct ast_channel **rc, void *pvt0, void *pvt1)
02854 {
02855 struct ast_frame *fr = NULL;
02856 struct ast_channel *who = NULL, *other = NULL, *cs[3] = {NULL, };
02857 int oldcodec0 = codec0, oldcodec1 = codec1;
02858 struct sockaddr_in ac1 = {0,}, vac1 = {0,}, ac0 = {0,}, vac0 = {0,};
02859 struct sockaddr_in t1 = {0,}, vt1 = {0,}, t0 = {0,}, vt0 = {0,};
02860
02861
02862
02863
02864 if (!(pr0->set_rtp_peer(c0, p1, vp1, codec1, ast_test_flag(p1, FLAG_NAT_ACTIVE)))) {
02865 ast_rtp_get_peer(p1, &ac1);
02866 if (vp1)
02867 ast_rtp_get_peer(vp1, &vac1);
02868 } else
02869 ast_log(LOG_WARNING, "Channel '%s' failed to talk to '%s'\n", c0->name, c1->name);
02870
02871
02872 if (!(pr1->set_rtp_peer(c1, p0, vp0, codec0, ast_test_flag(p0, FLAG_NAT_ACTIVE)))) {
02873 ast_rtp_get_peer(p0, &ac0);
02874 if (vp0)
02875 ast_rtp_get_peer(vp0, &vac0);
02876 } else
02877 ast_log(LOG_WARNING, "Channel '%s' failed to talk to '%s'\n", c1->name, c0->name);
02878
02879
02880 ast_channel_unlock(c0);
02881 ast_channel_unlock(c1);
02882
02883
02884 cs[0] = c0;
02885 cs[1] = c1;
02886 cs[2] = NULL;
02887 for (;;) {
02888
02889 if ((c0->tech_pvt != pvt0) ||
02890 (c1->tech_pvt != pvt1) ||
02891 (c0->masq || c0->masqr || c1->masq || c1->masqr) ||
02892 (c0->monitor || c0->audiohooks || c1->monitor || c1->audiohooks)) {
02893 ast_log(LOG_DEBUG, "Oooh, something is weird, backing out\n");
02894 if (c0->tech_pvt == pvt0)
02895 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02896 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02897 if (c1->tech_pvt == pvt1)
02898 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02899 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02900 return AST_BRIDGE_RETRY;
02901 }
02902
02903
02904 ast_rtp_get_peer(p1, &t1);
02905 if (vp1)
02906 ast_rtp_get_peer(vp1, &vt1);
02907 if (pr1->get_codec)
02908 codec1 = pr1->get_codec(c1);
02909 ast_rtp_get_peer(p0, &t0);
02910 if (vp0)
02911 ast_rtp_get_peer(vp0, &vt0);
02912 if (pr0->get_codec)
02913 codec0 = pr0->get_codec(c0);
02914 if ((inaddrcmp(&t1, &ac1)) ||
02915 (vp1 && inaddrcmp(&vt1, &vac1)) ||
02916 (codec1 != oldcodec1)) {
02917 if (option_debug > 1) {
02918 ast_log(LOG_DEBUG, "Oooh, '%s' changed end address to %s:%d (format %d)\n",
02919 c1->name, ast_inet_ntoa(t1.sin_addr), ntohs(t1.sin_port), codec1);
02920 ast_log(LOG_DEBUG, "Oooh, '%s' changed end vaddress to %s:%d (format %d)\n",
02921 c1->name, ast_inet_ntoa(vt1.sin_addr), ntohs(vt1.sin_port), codec1);
02922 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d/(format %d)\n",
02923 c1->name, ast_inet_ntoa(ac1.sin_addr), ntohs(ac1.sin_port), oldcodec1);
02924 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d/(format %d)\n",
02925 c1->name, ast_inet_ntoa(vac1.sin_addr), ntohs(vac1.sin_port), oldcodec1);
02926 }
02927 if (pr0->set_rtp_peer(c0, t1.sin_addr.s_addr ? p1 : NULL, vt1.sin_addr.s_addr ? vp1 : NULL, codec1, ast_test_flag(p1, FLAG_NAT_ACTIVE)))
02928 ast_log(LOG_WARNING, "Channel '%s' failed to update to '%s'\n", c0->name, c1->name);
02929 memcpy(&ac1, &t1, sizeof(ac1));
02930 memcpy(&vac1, &vt1, sizeof(vac1));
02931 oldcodec1 = codec1;
02932 }
02933 if ((inaddrcmp(&t0, &ac0)) ||
02934 (vp0 && inaddrcmp(&vt0, &vac0))) {
02935 if (option_debug > 1) {
02936 ast_log(LOG_DEBUG, "Oooh, '%s' changed end address to %s:%d (format %d)\n",
02937 c0->name, ast_inet_ntoa(t0.sin_addr), ntohs(t0.sin_port), codec0);
02938 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d/(format %d)\n",
02939 c0->name, ast_inet_ntoa(ac0.sin_addr), ntohs(ac0.sin_port), oldcodec0);
02940 }
02941 if (pr1->set_rtp_peer(c1, t0.sin_addr.s_addr ? p0 : NULL, vt0.sin_addr.s_addr ? vp0 : NULL, codec0, ast_test_flag(p0, FLAG_NAT_ACTIVE)))
02942 ast_log(LOG_WARNING, "Channel '%s' failed to update to '%s'\n", c1->name, c0->name);
02943 memcpy(&ac0, &t0, sizeof(ac0));
02944 memcpy(&vac0, &vt0, sizeof(vac0));
02945 oldcodec0 = codec0;
02946 }
02947
02948
02949 if (!(who = ast_waitfor_n(cs, 2, &timeoutms))) {
02950 if (!timeoutms) {
02951 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02952 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02953 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02954 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02955 return AST_BRIDGE_RETRY;
02956 }
02957 if (option_debug)
02958 ast_log(LOG_DEBUG, "Ooh, empty read...\n");
02959 if (ast_check_hangup(c0) || ast_check_hangup(c1))
02960 break;
02961 continue;
02962 }
02963 fr = ast_read(who);
02964 other = (who == c0) ? c1 : c0;
02965 if (!fr || ((fr->frametype == AST_FRAME_DTMF_BEGIN || fr->frametype == AST_FRAME_DTMF_END) &&
02966 (((who == c0) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) ||
02967 ((who == c1) && (flags & AST_BRIDGE_DTMF_CHANNEL_1))))) {
02968
02969 *fo = fr;
02970 *rc = who;
02971 if (option_debug)
02972 ast_log(LOG_DEBUG, "Oooh, got a %s\n", fr ? "digit" : "hangup");
02973 if (c0->tech_pvt == pvt0)
02974 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02975 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02976 if (c1->tech_pvt == pvt1)
02977 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02978 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02979 return AST_BRIDGE_COMPLETE;
02980 } else if ((fr->frametype == AST_FRAME_CONTROL) && !(flags & AST_BRIDGE_IGNORE_SIGS)) {
02981 if ((fr->subclass == AST_CONTROL_HOLD) ||
02982 (fr->subclass == AST_CONTROL_UNHOLD) ||
02983 (fr->subclass == AST_CONTROL_VIDUPDATE) ||
02984 (fr->subclass == AST_CONTROL_SRCUPDATE)) {
02985 if (fr->subclass == AST_CONTROL_HOLD) {
02986
02987 if (who == c0)
02988 pr1->set_rtp_peer(c1, NULL, NULL, 0, 0);
02989 else
02990 pr0->set_rtp_peer(c0, NULL, NULL, 0, 0);
02991 } else if (fr->subclass == AST_CONTROL_UNHOLD) {
02992
02993 if (who == c0)
02994 pr1->set_rtp_peer(c1, p0, vp0, codec0, ast_test_flag(p0, FLAG_NAT_ACTIVE));
02995 else
02996 pr0->set_rtp_peer(c0, p1, vp1, codec1, ast_test_flag(p1, FLAG_NAT_ACTIVE));
02997 }
02998
02999 ast_rtp_get_peer(p0, &t0);
03000 memcpy(&ac0, &t0, sizeof(ac0));
03001 ast_rtp_get_peer(p1, &t1);
03002 memcpy(&ac1, &t1, sizeof(ac1));
03003
03004 if (pr0->get_codec && c0->tech_pvt)
03005 oldcodec0 = codec0 = pr0->get_codec(c0);
03006 if (pr1->get_codec && c1->tech_pvt)
03007 oldcodec1 = codec1 = pr1->get_codec(c1);
03008 ast_indicate_data(other, fr->subclass, fr->data, fr->datalen);
03009 ast_frfree(fr);
03010 } else {
03011 *fo = fr;
03012 *rc = who;
03013 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", fr->subclass, who->name);
03014 return AST_BRIDGE_COMPLETE;
03015 }
03016 } else {
03017 if ((fr->frametype == AST_FRAME_DTMF_BEGIN) ||
03018 (fr->frametype == AST_FRAME_DTMF_END) ||
03019 (fr->frametype == AST_FRAME_VOICE) ||
03020 (fr->frametype == AST_FRAME_VIDEO) ||
03021 (fr->frametype == AST_FRAME_IMAGE) ||
03022 (fr->frametype == AST_FRAME_HTML) ||
03023 (fr->frametype == AST_FRAME_MODEM) ||
03024 (fr->frametype == AST_FRAME_TEXT)) {
03025 ast_write(other, fr);
03026 }
03027 ast_frfree(fr);
03028 }
03029
03030 cs[2] = cs[0];
03031 cs[0] = cs[1];
03032 cs[1] = cs[2];
03033 }
03034
03035 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
03036 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
03037 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
03038 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
03039
03040 return AST_BRIDGE_FAILED;
03041 }
03042
03043
03044 #ifdef P2P_INTENSE
03045 static int p2p_rtp_callback(int *id, int fd, short events, void *cbdata)
03046 {
03047 int res = 0, hdrlen = 12;
03048 struct sockaddr_in sin;
03049 socklen_t len;
03050 unsigned int *header;
03051 struct ast_rtp *rtp = cbdata, *bridged = NULL;
03052
03053 if (!rtp)
03054 return 1;
03055
03056 len = sizeof(sin);
03057 if ((res = recvfrom(fd, rtp->rawdata + AST_FRIENDLY_OFFSET, sizeof(rtp->rawdata) - AST_FRIENDLY_OFFSET, 0, (struct sockaddr *)&sin, &len)) < 0)
03058 return 1;
03059
03060 header = (unsigned int *)(rtp->rawdata + AST_FRIENDLY_OFFSET);
03061
03062
03063 if ((rtp->nat) &&
03064 ((rtp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
03065 (rtp->them.sin_port != sin.sin_port))) {
03066 rtp->them = sin;
03067 rtp->rxseqno = 0;
03068 ast_set_flag(rtp, FLAG_NAT_ACTIVE);
03069 if (option_debug || rtpdebug)
03070 ast_log(LOG_DEBUG, "P2P RTP NAT: Got audio from other end. Now sending to address %s:%d\n", ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port));
03071 }
03072
03073
03074 if ((bridged = ast_rtp_get_bridged(rtp)))
03075 bridge_p2p_rtp_write(rtp, bridged, header, res, hdrlen);
03076
03077 return 1;
03078 }
03079
03080
03081 static int p2p_callback_enable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
03082 {
03083
03084 if (ast_test_flag(rtp, FLAG_P2P_NEED_DTMF) || ast_test_flag(rtp, FLAG_HAS_STUN) || !rtp->io)
03085 return 0;
03086
03087
03088 if (rtp->ioid) {
03089 ast_io_remove(rtp->io, rtp->ioid);
03090 rtp->ioid = NULL;
03091 }
03092
03093
03094 fds[0] = chan->fds[0];
03095 chan->fds[0] = -1;
03096
03097
03098 iod[0] = ast_io_add(rtp->io, fds[0], p2p_rtp_callback, AST_IO_IN, rtp);
03099
03100 return 1;
03101 }
03102 #else
03103 static int p2p_callback_enable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
03104 {
03105 return 0;
03106 }
03107 #endif
03108
03109
03110 static int p2p_callback_disable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
03111 {
03112 ast_channel_lock(chan);
03113
03114
03115 ast_io_remove(rtp->io, iod[0]);
03116
03117
03118 chan->fds[0] = fds[0];
03119 ast_channel_unlock(chan);
03120
03121
03122 if (ast_test_flag(rtp, FLAG_CALLBACK_MODE))
03123 rtp->ioid = ast_io_add(rtp->io, rtp->s, rtpread, AST_IO_IN, rtp);
03124
03125 return 0;
03126 }
03127
03128
03129 static void p2p_set_bridge(struct ast_rtp *rtp0, struct ast_rtp *rtp1)
03130 {
03131 ast_mutex_lock(&rtp0->bridge_lock);
03132 rtp0->bridged = rtp1;
03133 ast_mutex_unlock(&rtp0->bridge_lock);
03134
03135 return;
03136 }
03137
03138
03139 static enum ast_bridge_result bridge_p2p_loop(struct ast_channel *c0, struct ast_channel *c1, struct ast_rtp *p0, struct ast_rtp *p1, int timeoutms, int flags, struct ast_frame **fo, struct ast_channel **rc, void *pvt0, void *pvt1)
03140 {
03141 struct ast_frame *fr = NULL;
03142 struct ast_channel *who = NULL, *other = NULL, *cs[3] = {NULL, };
03143 int p0_fds[2] = {-1, -1}, p1_fds[2] = {-1, -1};
03144 int *p0_iod[2] = {NULL, NULL}, *p1_iod[2] = {NULL, NULL};
03145 int p0_callback = 0, p1_callback = 0;
03146 enum ast_bridge_result res = AST_BRIDGE_FAILED;
03147
03148
03149 ast_clear_flag(p0, FLAG_P2P_SENT_MARK);
03150 p2p_set_bridge(p0, p1);
03151 ast_clear_flag(p1, FLAG_P2P_SENT_MARK);
03152 p2p_set_bridge(p1, p0);
03153
03154
03155 p0_callback = p2p_callback_enable(c0, p0, &p0_fds[0], &p0_iod[0]);
03156 p1_callback = p2p_callback_enable(c1, p1, &p1_fds[0], &p1_iod[0]);
03157
03158
03159 ast_channel_unlock(c0);
03160 ast_channel_unlock(c1);
03161
03162
03163 cs[0] = c0;
03164 cs[1] = c1;
03165 cs[2] = NULL;
03166 for (;;) {
03167
03168 if ((c0->rawreadformat != c1->rawwriteformat) || (c1->rawreadformat != c0->rawwriteformat)) {
03169 ast_log(LOG_DEBUG, "Oooh, formats changed, backing out\n");
03170 res = AST_BRIDGE_FAILED_NOWARN;
03171 break;
03172 }
03173
03174 if ((c0->tech_pvt != pvt0) ||
03175 (c1->tech_pvt != pvt1) ||
03176 (c0->masq || c0->masqr || c1->masq || c1->masqr) ||
03177 (c0->monitor || c0->audiohooks || c1->monitor || c1->audiohooks)) {
03178 ast_log(LOG_DEBUG, "Oooh, something is weird, backing out\n");
03179 if ((c0->masq || c0->masqr) && (fr = ast_read(c0)))
03180 ast_frfree(fr);
03181 if ((c1->masq || c1->masqr) && (fr = ast_read(c1)))
03182 ast_frfree(fr);
03183 res = AST_BRIDGE_RETRY;
03184 break;
03185 }
03186
03187 if (!(who = ast_waitfor_n(cs, 2, &timeoutms))) {
03188 if (!timeoutms) {
03189 res = AST_BRIDGE_RETRY;
03190 break;
03191 }
03192 if (option_debug)
03193 ast_log(LOG_NOTICE, "Ooh, empty read...\n");
03194 if (ast_check_hangup(c0) || ast_check_hangup(c1))
03195 break;
03196 continue;
03197 }
03198
03199 fr = ast_read(who);
03200 other = (who == c0) ? c1 : c0;
03201
03202 if (!fr || ((fr->frametype == AST_FRAME_DTMF_BEGIN || fr->frametype == AST_FRAME_DTMF_END) &&
03203 ((who == c0) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) |
03204 ((who == c1) && (flags & AST_BRIDGE_DTMF_CHANNEL_1)))) {
03205
03206 *fo = fr;
03207 *rc = who;
03208 if (option_debug)
03209 ast_log(LOG_DEBUG, "Oooh, got a %s\n", fr ? "digit" : "hangup");
03210 res = AST_BRIDGE_COMPLETE;
03211 break;
03212 } else if ((fr->frametype == AST_FRAME_CONTROL) && !(flags & AST_BRIDGE_IGNORE_SIGS)) {
03213 if ((fr->subclass == AST_CONTROL_HOLD) ||
03214 (fr->subclass == AST_CONTROL_UNHOLD) ||
03215 (fr->subclass == AST_CONTROL_VIDUPDATE) ||
03216 (fr->subclass == AST_CONTROL_SRCUPDATE)) {
03217
03218 if (fr->subclass == AST_CONTROL_HOLD) {
03219 if (p0_callback)
03220 p0_callback = p2p_callback_disable(c0, p0, &p0_fds[0], &p0_iod[0]);
03221 if (p1_callback)
03222 p1_callback = p2p_callback_disable(c1, p1, &p1_fds[0], &p1_iod[0]);
03223 p2p_set_bridge(p0, NULL);
03224 p2p_set_bridge(p1, NULL);
03225 } else if (fr->subclass == AST_CONTROL_UNHOLD) {
03226
03227 ast_clear_flag(p0, FLAG_P2P_SENT_MARK);
03228 p2p_set_bridge(p0, p1);
03229 ast_clear_flag(p1, FLAG_P2P_SENT_MARK);
03230 p2p_set_bridge(p1, p0);
03231 p0_callback = p2p_callback_enable(c0, p0, &p0_fds[0], &p0_iod[0]);
03232 p1_callback = p2p_callback_enable(c1, p1, &p1_fds[0], &p1_iod[0]);
03233 }
03234 ast_indicate_data(other, fr->subclass, fr->data, fr->datalen);
03235 ast_frfree(fr);
03236 } else {
03237 *fo = fr;
03238 *rc = who;
03239 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", fr->subclass, who->name);
03240 res = AST_BRIDGE_COMPLETE;
03241 break;
03242 }
03243 } else {
03244 if ((fr->frametype == AST_FRAME_DTMF_BEGIN) ||
03245 (fr->frametype == AST_FRAME_DTMF_END) ||
03246 (fr->frametype == AST_FRAME_VOICE) ||
03247 (fr->frametype == AST_FRAME_VIDEO) ||
03248 (fr->frametype == AST_FRAME_IMAGE) ||
03249 (fr->frametype == AST_FRAME_HTML) ||
03250 (fr->frametype == AST_FRAME_MODEM) ||
03251 (fr->frametype == AST_FRAME_TEXT)) {
03252 ast_write(other, fr);
03253 }
03254
03255 ast_frfree(fr);
03256 }
03257
03258 cs[2] = cs[0];
03259 cs[0] = cs[1];
03260 cs[1] = cs[2];
03261 }
03262
03263
03264 if (p0_callback)
03265 p0_callback = p2p_callback_disable(c0, p0, &p0_fds[0], &p0_iod[0]);
03266 if (p1_callback)
03267 p1_callback = p2p_callback_disable(c1, p1, &p1_fds[0], &p1_iod[0]);
03268
03269
03270 p2p_set_bridge(p0, NULL);
03271 p2p_set_bridge(p1, NULL);
03272
03273 return res;
03274 }
03275
03276
03277
03278
03279 enum ast_bridge_result ast_rtp_bridge(struct ast_channel *c0, struct ast_channel *c1, int flags, struct ast_frame **fo, struct ast_channel **rc, int timeoutms)
03280 {
03281 struct ast_rtp *p0 = NULL, *p1 = NULL;
03282 struct ast_rtp *vp0 = NULL, *vp1 = NULL;
03283 struct ast_rtp_protocol *pr0 = NULL, *pr1 = NULL;
03284 enum ast_rtp_get_result audio_p0_res = AST_RTP_GET_FAILED, video_p0_res = AST_RTP_GET_FAILED;
03285 enum ast_rtp_get_result audio_p1_res = AST_RTP_GET_FAILED, video_p1_res = AST_RTP_GET_FAILED;
03286 enum ast_bridge_result res = AST_BRIDGE_FAILED;
03287 int codec0 = 0, codec1 = 0;
03288 void *pvt0 = NULL, *pvt1 = NULL;
03289
03290
03291 ast_channel_lock(c0);
03292 while(ast_channel_trylock(c1)) {
03293 ast_channel_unlock(c0);
03294 usleep(1);
03295 ast_channel_lock(c0);
03296 }
03297
03298
03299 if (ast_check_hangup(c0) || ast_check_hangup(c1)) {
03300 ast_log(LOG_WARNING, "Got hangup while attempting to bridge '%s' and '%s'\n", c0->name, c1->name);
03301 ast_channel_unlock(c0);
03302 ast_channel_unlock(c1);
03303 return AST_BRIDGE_FAILED;
03304 }
03305
03306
03307 if (!(pr0 = get_proto(c0))) {
03308 ast_log(LOG_WARNING, "Can't find native functions for channel '%s'\n", c0->name);
03309 ast_channel_unlock(c0);
03310 ast_channel_unlock(c1);
03311 return AST_BRIDGE_FAILED;
03312 }
03313 if (!(pr1 = get_proto(c1))) {
03314 ast_log(LOG_WARNING, "Can't find native functions for channel '%s'\n", c1->name);
03315 ast_channel_unlock(c0);
03316 ast_channel_unlock(c1);
03317 return AST_BRIDGE_FAILED;
03318 }
03319
03320
03321 pvt0 = c0->tech_pvt;
03322 pvt1 = c1->tech_pvt;
03323
03324
03325 audio_p0_res = pr0->get_rtp_info(c0, &p0);
03326 video_p0_res = pr0->get_vrtp_info ? pr0->get_vrtp_info(c0, &vp0) : AST_RTP_GET_FAILED;
03327 audio_p1_res = pr1->get_rtp_info(c1, &p1);
03328 video_p1_res = pr1->get_vrtp_info ? pr1->get_vrtp_info(c1, &vp1) : AST_RTP_GET_FAILED;
03329
03330
03331 if (video_p0_res != AST_RTP_GET_FAILED && (audio_p0_res != AST_RTP_TRY_NATIVE || video_p0_res != AST_RTP_TRY_NATIVE))
03332 audio_p0_res = AST_RTP_GET_FAILED;
03333 if (video_p1_res != AST_RTP_GET_FAILED && (audio_p1_res != AST_RTP_TRY_NATIVE || video_p1_res != AST_RTP_TRY_NATIVE))
03334 audio_p1_res = AST_RTP_GET_FAILED;
03335
03336
03337 if (audio_p0_res == AST_RTP_GET_FAILED || audio_p1_res == AST_RTP_GET_FAILED) {
03338
03339 ast_channel_unlock(c0);
03340 ast_channel_unlock(c1);
03341 return AST_BRIDGE_FAILED_NOWARN;
03342 }
03343
03344
03345 if (ast_test_flag(p0, FLAG_HAS_DTMF) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) {
03346 ast_set_flag(p0, FLAG_P2P_NEED_DTMF);
03347 audio_p0_res = AST_RTP_TRY_PARTIAL;
03348 }
03349
03350 if (ast_test_flag(p1, FLAG_HAS_DTMF) && (flags & AST_BRIDGE_DTMF_CHANNEL_1)) {
03351 ast_set_flag(p1, FLAG_P2P_NEED_DTMF);
03352 audio_p1_res = AST_RTP_TRY_PARTIAL;
03353 }
03354
03355
03356
03357
03358
03359
03360
03361
03362
03363
03364
03365
03366
03367
03368 if ( (ast_test_flag(p0, FLAG_HAS_DTMF) != ast_test_flag(p1, FLAG_HAS_DTMF)) ||
03369 (!c0->tech->send_digit_begin != !c1->tech->send_digit_begin)) {
03370 if (!ast_test_flag(p0, FLAG_P2P_NEED_DTMF) || !ast_test_flag(p1, FLAG_P2P_NEED_DTMF)) {
03371 ast_channel_unlock(c0);
03372 ast_channel_unlock(c1);
03373 return AST_BRIDGE_FAILED_NOWARN;
03374 }
03375 audio_p0_res = AST_RTP_TRY_PARTIAL;
03376 audio_p1_res = AST_RTP_TRY_PARTIAL;
03377 }
03378
03379
03380 if ((audio_p0_res == AST_RTP_TRY_PARTIAL && ast_test_flag(p0, FLAG_P2P_NEED_DTMF)) ||
03381 (audio_p1_res == AST_RTP_TRY_PARTIAL && ast_test_flag(p1, FLAG_P2P_NEED_DTMF))) {
03382 ast_channel_unlock(c0);
03383 ast_channel_unlock(c1);
03384 return AST_BRIDGE_FAILED_NOWARN;
03385 }
03386
03387
03388 codec0 = pr0->get_codec ? pr0->get_codec(c0) : 0;
03389 codec1 = pr1->get_codec ? pr1->get_codec(c1) : 0;
03390 if (codec0 && codec1 && !(codec0 & codec1)) {
03391
03392 if (option_debug)
03393 ast_log(LOG_DEBUG, "Channel codec0 = %d is not codec1 = %d, cannot native bridge in RTP.\n", codec0, codec1);
03394 ast_channel_unlock(c0);
03395 ast_channel_unlock(c1);
03396 return AST_BRIDGE_FAILED_NOWARN;
03397 }
03398
03399
03400 if (audio_p0_res == AST_RTP_TRY_PARTIAL || audio_p1_res == AST_RTP_TRY_PARTIAL) {
03401 struct ast_format_list fmt0, fmt1;
03402
03403
03404 if (c0->rawreadformat != c1->rawwriteformat || c1->rawreadformat != c0->rawwriteformat) {
03405 if (option_debug)
03406 ast_log(LOG_DEBUG, "Cannot packet2packet bridge - raw formats are incompatible\n");
03407 ast_channel_unlock(c0);
03408 ast_channel_unlock(c1);
03409 return AST_BRIDGE_FAILED_NOWARN;
03410 }
03411
03412 fmt0 = ast_codec_pref_getsize(&p0->pref, c0->rawreadformat);
03413 fmt1 = ast_codec_pref_getsize(&p1->pref, c1->rawreadformat);
03414 if (fmt0.cur_ms != fmt1.cur_ms) {
03415 if (option_debug)
03416 ast_log(LOG_DEBUG, "Cannot packet2packet bridge - packetization settings prevent it\n");
03417 ast_channel_unlock(c0);
03418 ast_channel_unlock(c1);
03419 return AST_BRIDGE_FAILED_NOWARN;
03420 }
03421
03422 if (option_verbose > 2)
03423 ast_verbose(VERBOSE_PREFIX_3 "Packet2Packet bridging %s and %s\n", c0->name, c1->name);
03424 res = bridge_p2p_loop(c0, c1, p0, p1, timeoutms, flags, fo, rc, pvt0, pvt1);
03425 } else {
03426 if (option_verbose > 2)
03427 ast_verbose(VERBOSE_PREFIX_3 "Native bridging %s and %s\n", c0->name, c1->name);
03428 res = bridge_native_loop(c0, c1, p0, p1, vp0, vp1, pr0, pr1, codec0, codec1, timeoutms, flags, fo, rc, pvt0, pvt1);
03429 }
03430
03431 return res;
03432 }
03433
03434 static int rtp_do_debug_ip(int fd, int argc, char *argv[])
03435 {
03436 struct hostent *hp;
03437 struct ast_hostent ahp;
03438 int port = 0;
03439 char *p, *arg;
03440
03441 if (argc != 4)
03442 return RESULT_SHOWUSAGE;
03443 arg = argv[3];
03444 p = strstr(arg, ":");
03445 if (p) {
03446 *p = '\0';
03447 p++;
03448 port = atoi(p);
03449 }
03450 hp = ast_gethostbyname(arg, &ahp);
03451 if (hp == NULL)
03452 return RESULT_SHOWUSAGE;
03453 rtpdebugaddr.sin_family = AF_INET;
03454 memcpy(&rtpdebugaddr.sin_addr, hp->h_addr, sizeof(rtpdebugaddr.sin_addr));
03455 rtpdebugaddr.sin_port = htons(port);
03456 if (port == 0)
03457 ast_cli(fd, "RTP Debugging Enabled for IP: %s\n", ast_inet_ntoa(rtpdebugaddr.sin_addr));
03458 else
03459 ast_cli(fd, "RTP Debugging Enabled for IP: %s:%d\n", ast_inet_ntoa(rtpdebugaddr.sin_addr), port);
03460 rtpdebug = 1;
03461 return RESULT_SUCCESS;
03462 }
03463
03464 static int rtcp_do_debug_ip_deprecated(int fd, int argc, char *argv[])
03465 {
03466 struct hostent *hp;
03467 struct ast_hostent ahp;
03468 int port = 0;
03469 char *p, *arg;
03470 if (argc != 5)
03471 return RESULT_SHOWUSAGE;
03472
03473 arg = argv[4];
03474 p = strstr(arg, ":");
03475 if (p) {
03476 *p = '\0';
03477 p++;
03478 port = atoi(p);
03479 }
03480 hp = ast_gethostbyname(arg, &ahp);
03481 if (hp == NULL)
03482 return RESULT_SHOWUSAGE;
03483 rtcpdebugaddr.sin_family = AF_INET;
03484 memcpy(&rtcpdebugaddr.sin_addr, hp->h_addr, sizeof(rtcpdebugaddr.sin_addr));
03485 rtcpdebugaddr.sin_port = htons(port);
03486 if (port == 0)
03487 ast_cli(fd, "RTCP Debugging Enabled for IP: %s\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr));
03488 else
03489 ast_cli(fd, "RTCP Debugging Enabled for IP: %s:%d\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr), port);
03490 rtcpdebug = 1;
03491 return RESULT_SUCCESS;
03492 }
03493
03494 static int rtcp_do_debug_ip(int fd, int argc, char *argv[])
03495 {
03496 struct hostent *hp;
03497 struct ast_hostent ahp;
03498 int port = 0;
03499 char *p, *arg;
03500 if (argc != 4)
03501 return RESULT_SHOWUSAGE;
03502
03503 arg = argv[3];
03504 p = strstr(arg, ":");
03505 if (p) {
03506 *p = '\0';
03507 p++;
03508 port = atoi(p);
03509 }
03510 hp = ast_gethostbyname(arg, &ahp);
03511 if (hp == NULL)
03512 return RESULT_SHOWUSAGE;
03513 rtcpdebugaddr.sin_family = AF_INET;
03514 memcpy(&rtcpdebugaddr.sin_addr, hp->h_addr, sizeof(rtcpdebugaddr.sin_addr));
03515 rtcpdebugaddr.sin_port = htons(port);
03516 if (port == 0)
03517 ast_cli(fd, "RTCP Debugging Enabled for IP: %s\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr));
03518 else
03519 ast_cli(fd, "RTCP Debugging Enabled for IP: %s:%d\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr), port);
03520 rtcpdebug = 1;
03521 return RESULT_SUCCESS;
03522 }
03523
03524 static int rtp_do_debug(int fd, int argc, char *argv[])
03525 {
03526 if (argc != 2) {
03527 if (argc != 4)
03528 return RESULT_SHOWUSAGE;
03529 return rtp_do_debug_ip(fd, argc, argv);
03530 }
03531 rtpdebug = 1;
03532 memset(&rtpdebugaddr,0,sizeof(rtpdebugaddr));
03533 ast_cli(fd, "RTP Debugging Enabled\n");
03534 return RESULT_SUCCESS;
03535 }
03536
03537 static int rtcp_do_debug_deprecated(int fd, int argc, char *argv[]) {
03538 if (argc != 3) {
03539 if (argc != 5)
03540 return RESULT_SHOWUSAGE;
03541 return rtcp_do_debug_ip_deprecated(fd, argc, argv);
03542 }
03543 rtcpdebug = 1;
03544 memset(&rtcpdebugaddr,0,sizeof(rtcpdebugaddr));
03545 ast_cli(fd, "RTCP Debugging Enabled\n");
03546 return RESULT_SUCCESS;
03547 }
03548
03549 static int rtcp_do_debug(int fd, int argc, char *argv[]) {
03550 if (argc != 2) {
03551 if (argc != 4)
03552 return RESULT_SHOWUSAGE;
03553 return rtcp_do_debug_ip(fd, argc, argv);
03554 }
03555 rtcpdebug = 1;
03556 memset(&rtcpdebugaddr,0,sizeof(rtcpdebugaddr));
03557 ast_cli(fd, "RTCP Debugging Enabled\n");
03558 return RESULT_SUCCESS;
03559 }
03560
03561 static int rtcp_do_stats_deprecated(int fd, int argc, char *argv[]) {
03562 if (argc != 3) {
03563 return RESULT_SHOWUSAGE;
03564 }
03565 rtcpstats = 1;
03566 ast_cli(fd, "RTCP Stats Enabled\n");
03567 return RESULT_SUCCESS;
03568 }
03569
03570 static int rtcp_do_stats(int fd, int argc, char *argv[]) {
03571 if (argc != 2) {
03572 return RESULT_SHOWUSAGE;
03573 }
03574 rtcpstats = 1;
03575 ast_cli(fd, "RTCP Stats Enabled\n");
03576 return RESULT_SUCCESS;
03577 }
03578
03579 static int rtp_no_debug(int fd, int argc, char *argv[])
03580 {
03581 if (argc != 3)
03582 return RESULT_SHOWUSAGE;
03583 rtpdebug = 0;
03584 ast_cli(fd,"RTP Debugging Disabled\n");
03585 return RESULT_SUCCESS;
03586 }
03587
03588 static int rtcp_no_debug_deprecated(int fd, int argc, char *argv[])
03589 {
03590 if (argc != 4)
03591 return RESULT_SHOWUSAGE;
03592 rtcpdebug = 0;
03593 ast_cli(fd,"RTCP Debugging Disabled\n");
03594 return RESULT_SUCCESS;
03595 }
03596
03597 static int rtcp_no_debug(int fd, int argc, char *argv[])
03598 {
03599 if (argc != 3)
03600 return RESULT_SHOWUSAGE;
03601 rtcpdebug = 0;
03602 ast_cli(fd,"RTCP Debugging Disabled\n");
03603 return RESULT_SUCCESS;
03604 }
03605
03606 static int rtcp_no_stats_deprecated(int fd, int argc, char *argv[])
03607 {
03608 if (argc != 4)
03609 return RESULT_SHOWUSAGE;
03610 rtcpstats = 0;
03611 ast_cli(fd,"RTCP Stats Disabled\n");
03612 return RESULT_SUCCESS;
03613 }
03614
03615 static int rtcp_no_stats(int fd, int argc, char *argv[])
03616 {
03617 if (argc != 3)
03618 return RESULT_SHOWUSAGE;
03619 rtcpstats = 0;
03620 ast_cli(fd,"RTCP Stats Disabled\n");
03621 return RESULT_SUCCESS;
03622 }
03623
03624 static int stun_do_debug(int fd, int argc, char *argv[])
03625 {
03626 if (argc != 2) {
03627 return RESULT_SHOWUSAGE;
03628 }
03629 stundebug = 1;
03630 ast_cli(fd, "STUN Debugging Enabled\n");
03631 return RESULT_SUCCESS;
03632 }
03633
03634 static int stun_no_debug(int fd, int argc, char *argv[])
03635 {
03636 if (argc != 3)
03637 return RESULT_SHOWUSAGE;
03638 stundebug = 0;
03639 ast_cli(fd, "STUN Debugging Disabled\n");
03640 return RESULT_SUCCESS;
03641 }
03642
03643 static char debug_usage[] =
03644 "Usage: rtp debug [ip host[:port]]\n"
03645 " Enable dumping of all RTP packets to and from host.\n";
03646
03647 static char no_debug_usage[] =
03648 "Usage: rtp debug off\n"
03649 " Disable all RTP debugging\n";
03650
03651 static char stun_debug_usage[] =
03652 "Usage: stun debug\n"
03653 " Enable STUN (Simple Traversal of UDP through NATs) debugging\n";
03654
03655 static char stun_no_debug_usage[] =
03656 "Usage: stun debug off\n"
03657 " Disable STUN debugging\n";
03658
03659 static char rtcp_debug_usage[] =
03660 "Usage: rtcp debug [ip host[:port]]\n"
03661 " Enable dumping of all RTCP packets to and from host.\n";
03662
03663 static char rtcp_no_debug_usage[] =
03664 "Usage: rtcp debug off\n"
03665 " Disable all RTCP debugging\n";
03666
03667 static char rtcp_stats_usage[] =
03668 "Usage: rtcp stats\n"
03669 " Enable dumping of RTCP stats.\n";
03670
03671 static char rtcp_no_stats_usage[] =
03672 "Usage: rtcp stats off\n"
03673 " Disable all RTCP stats\n";
03674
03675 static struct ast_cli_entry cli_rtp_no_debug_deprecated = {
03676 { "rtp", "no", "debug", NULL },
03677 rtp_no_debug, NULL,
03678 NULL };
03679
03680 static struct ast_cli_entry cli_rtp_rtcp_debug_ip_deprecated = {
03681 { "rtp", "rtcp", "debug", "ip", NULL },
03682 rtcp_do_debug_deprecated, NULL,
03683 NULL };
03684
03685 static struct ast_cli_entry cli_rtp_rtcp_debug_deprecated = {
03686 { "rtp", "rtcp", "debug", NULL },
03687 rtcp_do_debug_deprecated, NULL,
03688 NULL };
03689
03690 static struct ast_cli_entry cli_rtp_rtcp_no_debug_deprecated = {
03691 { "rtp", "rtcp", "no", "debug", NULL },
03692 rtcp_no_debug_deprecated, NULL,
03693 NULL };
03694
03695 static struct ast_cli_entry cli_rtp_rtcp_stats_deprecated = {
03696 { "rtp", "rtcp", "stats", NULL },
03697 rtcp_do_stats_deprecated, NULL,
03698 NULL };
03699
03700 static struct ast_cli_entry cli_rtp_rtcp_no_stats_deprecated = {
03701 { "rtp", "rtcp", "no", "stats", NULL },
03702 rtcp_no_stats_deprecated, NULL,
03703 NULL };
03704
03705 static struct ast_cli_entry cli_stun_no_debug_deprecated = {
03706 { "stun", "no", "debug", NULL },
03707 stun_no_debug, NULL,
03708 NULL };
03709
03710 static struct ast_cli_entry cli_rtp[] = {
03711 { { "rtp", "debug", "ip", NULL },
03712 rtp_do_debug, "Enable RTP debugging on IP",
03713 debug_usage },
03714
03715 { { "rtp", "debug", NULL },
03716 rtp_do_debug, "Enable RTP debugging",
03717 debug_usage },
03718
03719 { { "rtp", "debug", "off", NULL },
03720 rtp_no_debug, "Disable RTP debugging",
03721 no_debug_usage, NULL, &cli_rtp_no_debug_deprecated },
03722
03723 { { "rtcp", "debug", "ip", NULL },
03724 rtcp_do_debug, "Enable RTCP debugging on IP",
03725 rtcp_debug_usage, NULL, &cli_rtp_rtcp_debug_ip_deprecated },
03726
03727 { { "rtcp", "debug", NULL },
03728 rtcp_do_debug, "Enable RTCP debugging",
03729 rtcp_debug_usage, NULL, &cli_rtp_rtcp_debug_deprecated },
03730
03731 { { "rtcp", "debug", "off", NULL },
03732 rtcp_no_debug, "Disable RTCP debugging",
03733 rtcp_no_debug_usage, NULL, &cli_rtp_rtcp_no_debug_deprecated },
03734
03735 { { "rtcp", "stats", NULL },
03736 rtcp_do_stats, "Enable RTCP stats",
03737 rtcp_stats_usage, NULL, &cli_rtp_rtcp_stats_deprecated },
03738
03739 { { "rtcp", "stats", "off", NULL },
03740 rtcp_no_stats, "Disable RTCP stats",
03741 rtcp_no_stats_usage, NULL, &cli_rtp_rtcp_no_stats_deprecated },
03742
03743 { { "stun", "debug", NULL },
03744 stun_do_debug, "Enable STUN debugging",
03745 stun_debug_usage },
03746
03747 { { "stun", "debug", "off", NULL },
03748 stun_no_debug, "Disable STUN debugging",
03749 stun_no_debug_usage, NULL, &cli_stun_no_debug_deprecated },
03750 };
03751
03752 int ast_rtp_reload(void)
03753 {
03754 struct ast_config *cfg;
03755 const char *s;
03756
03757 rtpstart = 5000;
03758 rtpend = 31000;
03759 dtmftimeout = DEFAULT_DTMF_TIMEOUT;
03760 cfg = ast_config_load("rtp.conf");
03761 if (cfg) {
03762 if ((s = ast_variable_retrieve(cfg, "general", "rtpstart"))) {
03763 rtpstart = atoi(s);
03764 if (rtpstart < 1024)
03765 rtpstart = 1024;
03766 if (rtpstart > 65535)
03767 rtpstart = 65535;
03768 }
03769 if ((s = ast_variable_retrieve(cfg, "general", "rtpend"))) {
03770 rtpend = atoi(s);
03771 if (rtpend < 1024)
03772 rtpend = 1024;
03773 if (rtpend > 65535)
03774 rtpend = 65535;
03775 }
03776 if ((s = ast_variable_retrieve(cfg, "general", "rtcpinterval"))) {
03777 rtcpinterval = atoi(s);
03778 if (rtcpinterval == 0)
03779 rtcpinterval = 0;
03780 if (rtcpinterval < RTCP_MIN_INTERVALMS)
03781 rtcpinterval = RTCP_MIN_INTERVALMS;
03782 if (rtcpinterval > RTCP_MAX_INTERVALMS)
03783 rtcpinterval = RTCP_MAX_INTERVALMS;
03784 }
03785 if ((s = ast_variable_retrieve(cfg, "general", "rtpchecksums"))) {
03786 #ifdef SO_NO_CHECK
03787 if (ast_false(s))
03788 nochecksums = 1;
03789 else
03790 nochecksums = 0;
03791 #else
03792 if (ast_false(s))
03793 ast_log(LOG_WARNING, "Disabling RTP checksums is not supported on this operating system!\n");
03794 #endif
03795 }
03796 if ((s = ast_variable_retrieve(cfg, "general", "dtmftimeout"))) {
03797 dtmftimeout = atoi(s);
03798 if ((dtmftimeout < 0) || (dtmftimeout > 20000)) {
03799 ast_log(LOG_WARNING, "DTMF timeout of '%d' outside range, using default of '%d' instead\n",
03800 dtmftimeout, DEFAULT_DTMF_TIMEOUT);
03801 dtmftimeout = DEFAULT_DTMF_TIMEOUT;
03802 };
03803 }
03804 ast_config_destroy(cfg);
03805 }
03806 if (rtpstart >= rtpend) {
03807 ast_log(LOG_WARNING, "Unreasonable values for RTP start/end port in rtp.conf\n");
03808 rtpstart = 5000;
03809 rtpend = 31000;
03810 }
03811 if (option_verbose > 1)
03812 ast_verbose(VERBOSE_PREFIX_2 "RTP Allocating from port range %d -> %d\n", rtpstart, rtpend);
03813 return 0;
03814 }
03815
03816
03817 void ast_rtp_init(void)
03818 {
03819 ast_cli_register_multiple(cli_rtp, sizeof(cli_rtp) / sizeof(struct ast_cli_entry));
03820 ast_rtp_reload();
03821 }
03822