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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.samples = 0;
00809 rtp->f.delivery.tv_usec = rtp->f.delivery.tv_sec = 0;
00810 f = &rtp->f;
00811 return f;
00812 }
00813
00814 static int rtpread(int *id, int fd, short events, void *cbdata)
00815 {
00816 struct ast_rtp *rtp = cbdata;
00817 struct ast_frame *f;
00818 f = ast_rtp_read(rtp);
00819 if (f) {
00820 if (rtp->callback)
00821 rtp->callback(rtp, f, rtp->data);
00822 }
00823 return 1;
00824 }
00825
00826 struct ast_frame *ast_rtcp_read(struct ast_rtp *rtp)
00827 {
00828 socklen_t len;
00829 int position, i, packetwords;
00830 int res;
00831 struct sockaddr_in sin;
00832 unsigned int rtcpdata[8192 + AST_FRIENDLY_OFFSET];
00833 unsigned int *rtcpheader;
00834 int pt;
00835 struct timeval now;
00836 unsigned int length;
00837 int rc;
00838 double rttsec;
00839 uint64_t rtt = 0;
00840 unsigned int dlsr;
00841 unsigned int lsr;
00842 unsigned int msw;
00843 unsigned int lsw;
00844 unsigned int comp;
00845 struct ast_frame *f = &ast_null_frame;
00846
00847 if (!rtp || !rtp->rtcp)
00848 return &ast_null_frame;
00849
00850 len = sizeof(sin);
00851
00852 res = recvfrom(rtp->rtcp->s, rtcpdata + AST_FRIENDLY_OFFSET, sizeof(rtcpdata) - sizeof(unsigned int) * AST_FRIENDLY_OFFSET,
00853 0, (struct sockaddr *)&sin, &len);
00854 rtcpheader = (unsigned int *)(rtcpdata + AST_FRIENDLY_OFFSET);
00855
00856 if (res < 0) {
00857 ast_assert(errno != EBADF);
00858 if (errno != EAGAIN) {
00859 ast_log(LOG_WARNING, "RTCP Read error: %s. Hanging up.\n", strerror(errno));
00860 return NULL;
00861 }
00862 return &ast_null_frame;
00863 }
00864
00865 packetwords = res / 4;
00866
00867 if (rtp->nat) {
00868
00869 if ((rtp->rtcp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
00870 (rtp->rtcp->them.sin_port != sin.sin_port)) {
00871 memcpy(&rtp->rtcp->them, &sin, sizeof(rtp->rtcp->them));
00872 if (option_debug || rtpdebug)
00873 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));
00874 }
00875 }
00876
00877 if (option_debug)
00878 ast_log(LOG_DEBUG, "Got RTCP report of %d bytes\n", res);
00879
00880
00881 position = 0;
00882 while (position < packetwords) {
00883 i = position;
00884 length = ntohl(rtcpheader[i]);
00885 pt = (length & 0xff0000) >> 16;
00886 rc = (length & 0x1f000000) >> 24;
00887 length &= 0xffff;
00888
00889 if ((i + length) > packetwords) {
00890 ast_log(LOG_WARNING, "RTCP Read too short\n");
00891 return &ast_null_frame;
00892 }
00893
00894 if (rtcp_debug_test_addr(&sin)) {
00895 ast_verbose("\n\nGot RTCP from %s:%d\n", ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port));
00896 ast_verbose("PT: %d(%s)\n", pt, (pt == 200) ? "Sender Report" : (pt == 201) ? "Receiver Report" : (pt == 192) ? "H.261 FUR" : "Unknown");
00897 ast_verbose("Reception reports: %d\n", rc);
00898 ast_verbose("SSRC of sender: %u\n", rtcpheader[i + 1]);
00899 }
00900
00901 i += 2;
00902
00903 switch (pt) {
00904 case RTCP_PT_SR:
00905 gettimeofday(&rtp->rtcp->rxlsr,NULL);
00906 rtp->rtcp->spc = ntohl(rtcpheader[i+3]);
00907 rtp->rtcp->soc = ntohl(rtcpheader[i + 4]);
00908 rtp->rtcp->themrxlsr = ((ntohl(rtcpheader[i]) & 0x0000ffff) << 16) | ((ntohl(rtcpheader[i + 1]) & 0xffff0000) >> 16);
00909
00910 if (rtcp_debug_test_addr(&sin)) {
00911 ast_verbose("NTP timestamp: %lu.%010lu\n", (unsigned long) ntohl(rtcpheader[i]), (unsigned long) ntohl(rtcpheader[i + 1]) * 4096);
00912 ast_verbose("RTP timestamp: %lu\n", (unsigned long) ntohl(rtcpheader[i + 2]));
00913 ast_verbose("SPC: %lu\tSOC: %lu\n", (unsigned long) ntohl(rtcpheader[i + 3]), (unsigned long) ntohl(rtcpheader[i + 4]));
00914 }
00915 i += 5;
00916 if (rc < 1)
00917 break;
00918
00919 case RTCP_PT_RR:
00920
00921
00922 gettimeofday(&now, NULL);
00923 timeval2ntp(now, &msw, &lsw);
00924 if (ntohl(rtcpheader[i + 4]) && ntohl(rtcpheader[i + 5])) {
00925 comp = ((msw & 0xffff) << 16) | ((lsw & 0xffff0000) >> 16);
00926 lsr = ntohl(rtcpheader[i + 4]);
00927 dlsr = ntohl(rtcpheader[i + 5]);
00928 rtt = comp - lsr - dlsr;
00929
00930
00931
00932 if (rtt < 4294) {
00933 rtt = (rtt * 1000000) >> 16;
00934 } else {
00935 rtt = (rtt * 1000) >> 16;
00936 rtt *= 1000;
00937 }
00938 rtt = rtt / 1000.;
00939 rttsec = rtt / 1000.;
00940
00941 if (comp - dlsr >= lsr) {
00942 rtp->rtcp->accumulated_transit += rttsec;
00943 rtp->rtcp->rtt = rttsec;
00944 if (rtp->rtcp->maxrtt<rttsec)
00945 rtp->rtcp->maxrtt = rttsec;
00946 if (rtp->rtcp->minrtt>rttsec)
00947 rtp->rtcp->minrtt = rttsec;
00948 } else if (rtcp_debug_test_addr(&sin)) {
00949 ast_verbose("Internal RTCP NTP clock skew detected: "
00950 "lsr=%u, now=%u, dlsr=%u (%d:%03dms), "
00951 "diff=%d\n",
00952 lsr, comp, dlsr, dlsr / 65536,
00953 (dlsr % 65536) * 1000 / 65536,
00954 dlsr - (comp - lsr));
00955 }
00956 }
00957
00958 rtp->rtcp->reported_jitter = ntohl(rtcpheader[i + 3]);
00959 rtp->rtcp->reported_lost = ntohl(rtcpheader[i + 1]) & 0xffffff;
00960 if (rtcp_debug_test_addr(&sin)) {
00961 ast_verbose(" Fraction lost: %ld\n", (((long) ntohl(rtcpheader[i + 1]) & 0xff000000) >> 24));
00962 ast_verbose(" Packets lost so far: %d\n", rtp->rtcp->reported_lost);
00963 ast_verbose(" Highest sequence number: %ld\n", (long) (ntohl(rtcpheader[i + 2]) & 0xffff));
00964 ast_verbose(" Sequence number cycles: %ld\n", (long) (ntohl(rtcpheader[i + 2]) & 0xffff) >> 16);
00965 ast_verbose(" Interarrival jitter: %u\n", rtp->rtcp->reported_jitter);
00966 ast_verbose(" Last SR(our NTP): %lu.%010lu\n",(unsigned long) ntohl(rtcpheader[i + 4]) >> 16,((unsigned long) ntohl(rtcpheader[i + 4]) << 16) * 4096);
00967 ast_verbose(" DLSR: %4.4f (sec)\n",ntohl(rtcpheader[i + 5])/65536.0);
00968 if (rtt)
00969 ast_verbose(" RTT: %lu(sec)\n", (unsigned long) rtt);
00970 }
00971 break;
00972 case RTCP_PT_FUR:
00973 if (rtcp_debug_test_addr(&sin))
00974 ast_verbose("Received an RTCP Fast Update Request\n");
00975 rtp->f.frametype = AST_FRAME_CONTROL;
00976 rtp->f.subclass = AST_CONTROL_VIDUPDATE;
00977 rtp->f.datalen = 0;
00978 rtp->f.samples = 0;
00979 rtp->f.mallocd = 0;
00980 rtp->f.src = "RTP";
00981 f = &rtp->f;
00982 break;
00983 case RTCP_PT_SDES:
00984 if (rtcp_debug_test_addr(&sin))
00985 ast_verbose("Received an SDES from %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
00986 break;
00987 case RTCP_PT_BYE:
00988 if (rtcp_debug_test_addr(&sin))
00989 ast_verbose("Received a BYE from %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
00990 break;
00991 default:
00992 if (option_debug)
00993 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));
00994 break;
00995 }
00996 position += (length + 1);
00997 }
00998
00999 return f;
01000 }
01001
01002 static void calc_rxstamp(struct timeval *tv, struct ast_rtp *rtp, unsigned int timestamp, int mark)
01003 {
01004 struct timeval now;
01005 double transit;
01006 double current_time;
01007 double d;
01008 double dtv;
01009 double prog;
01010
01011 if ((!rtp->rxcore.tv_sec && !rtp->rxcore.tv_usec) || mark) {
01012 gettimeofday(&rtp->rxcore, NULL);
01013 rtp->drxcore = (double) rtp->rxcore.tv_sec + (double) rtp->rxcore.tv_usec / 1000000;
01014
01015 rtp->seedrxts = timestamp;
01016 rtp->rxcore.tv_sec -= timestamp / 8000;
01017 rtp->rxcore.tv_usec -= (timestamp % 8000) * 125;
01018
01019 rtp->rxcore.tv_usec -= rtp->rxcore.tv_usec % 100;
01020 if (rtp->rxcore.tv_usec < 0) {
01021
01022 rtp->rxcore.tv_usec += 1000000;
01023 rtp->rxcore.tv_sec -= 1;
01024 }
01025 }
01026
01027 gettimeofday(&now,NULL);
01028
01029 tv->tv_sec = rtp->rxcore.tv_sec + timestamp / 8000;
01030 tv->tv_usec = rtp->rxcore.tv_usec + (timestamp % 8000) * 125;
01031 if (tv->tv_usec >= 1000000) {
01032 tv->tv_usec -= 1000000;
01033 tv->tv_sec += 1;
01034 }
01035 prog = (double)((timestamp-rtp->seedrxts)/8000.);
01036 dtv = (double)rtp->drxcore + (double)(prog);
01037 current_time = (double)now.tv_sec + (double)now.tv_usec/1000000;
01038 transit = current_time - dtv;
01039 d = transit - rtp->rxtransit;
01040 rtp->rxtransit = transit;
01041 if (d<0)
01042 d=-d;
01043 rtp->rxjitter += (1./16.) * (d - rtp->rxjitter);
01044 if (rtp->rtcp && rtp->rxjitter > rtp->rtcp->maxrxjitter)
01045 rtp->rtcp->maxrxjitter = rtp->rxjitter;
01046 if (rtp->rtcp && rtp->rxjitter < rtp->rtcp->minrxjitter)
01047 rtp->rtcp->minrxjitter = rtp->rxjitter;
01048 }
01049
01050
01051 static int bridge_p2p_rtp_write(struct ast_rtp *rtp, struct ast_rtp *bridged, unsigned int *rtpheader, int len, int hdrlen)
01052 {
01053 int res = 0, payload = 0, bridged_payload = 0, mark;
01054 struct rtpPayloadType rtpPT;
01055 int reconstruct = ntohl(rtpheader[0]);
01056
01057
01058 payload = (reconstruct & 0x7f0000) >> 16;
01059 mark = (((reconstruct & 0x800000) >> 23) != 0);
01060
01061
01062 rtpPT = ast_rtp_lookup_pt(rtp, payload);
01063
01064
01065 if (!bridged->current_RTP_PT[payload].code)
01066 return -1;
01067
01068
01069 if (ast_test_flag(rtp, FLAG_P2P_NEED_DTMF) && !rtpPT.isAstFormat && rtpPT.code == AST_RTP_DTMF)
01070 return -1;
01071
01072
01073 bridged_payload = ast_rtp_lookup_code(bridged, rtpPT.isAstFormat, rtpPT.code);
01074
01075
01076 if (!ast_test_flag(rtp, FLAG_P2P_SENT_MARK)) {
01077 mark = 1;
01078 ast_set_flag(rtp, FLAG_P2P_SENT_MARK);
01079 }
01080
01081
01082 reconstruct &= 0xFF80FFFF;
01083 reconstruct |= (bridged_payload << 16);
01084 reconstruct |= (mark << 23);
01085 rtpheader[0] = htonl(reconstruct);
01086
01087
01088 res = sendto(bridged->s, (void *)rtpheader, len, 0, (struct sockaddr *)&bridged->them, sizeof(bridged->them));
01089 if (res < 0) {
01090 if (!bridged->nat || (bridged->nat && (ast_test_flag(bridged, FLAG_NAT_ACTIVE) == FLAG_NAT_ACTIVE))) {
01091 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));
01092 } else if (((ast_test_flag(bridged, FLAG_NAT_ACTIVE) == FLAG_NAT_INACTIVE) || rtpdebug) && !ast_test_flag(bridged, FLAG_NAT_INACTIVE_NOWARN)) {
01093 if (option_debug || rtpdebug)
01094 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));
01095 ast_set_flag(bridged, FLAG_NAT_INACTIVE_NOWARN);
01096 }
01097 return 0;
01098 } else if (rtp_debug_test_addr(&bridged->them))
01099 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);
01100
01101 return 0;
01102 }
01103
01104 struct ast_frame *ast_rtp_read(struct ast_rtp *rtp)
01105 {
01106 int res;
01107 struct sockaddr_in sin;
01108 socklen_t len;
01109 unsigned int seqno;
01110 int version;
01111 int payloadtype;
01112 int hdrlen = 12;
01113 int padding;
01114 int mark;
01115 int ext;
01116 int cc;
01117 unsigned int ssrc;
01118 unsigned int timestamp;
01119 unsigned int *rtpheader;
01120 struct rtpPayloadType rtpPT;
01121 struct ast_rtp *bridged = NULL;
01122
01123
01124 if (rtp->sending_digit)
01125 ast_rtp_senddigit_continuation(rtp);
01126
01127 len = sizeof(sin);
01128
01129
01130 res = recvfrom(rtp->s, rtp->rawdata + AST_FRIENDLY_OFFSET, sizeof(rtp->rawdata) - AST_FRIENDLY_OFFSET,
01131 0, (struct sockaddr *)&sin, &len);
01132
01133 rtpheader = (unsigned int *)(rtp->rawdata + AST_FRIENDLY_OFFSET);
01134 if (res < 0) {
01135 ast_assert(errno != EBADF);
01136 if (errno != EAGAIN) {
01137 ast_log(LOG_WARNING, "RTP Read error: %s. Hanging up.\n", strerror(errno));
01138 return NULL;
01139 }
01140 return &ast_null_frame;
01141 }
01142
01143 if (res < hdrlen) {
01144 ast_log(LOG_WARNING, "RTP Read too short\n");
01145 return &ast_null_frame;
01146 }
01147
01148
01149 seqno = ntohl(rtpheader[0]);
01150
01151
01152 version = (seqno & 0xC0000000) >> 30;
01153 if (!version) {
01154 if ((stun_handle_packet(rtp->s, &sin, rtp->rawdata + AST_FRIENDLY_OFFSET, res) == STUN_ACCEPT) &&
01155 (!rtp->them.sin_port && !rtp->them.sin_addr.s_addr)) {
01156 memcpy(&rtp->them, &sin, sizeof(rtp->them));
01157 }
01158 return &ast_null_frame;
01159 }
01160
01161 #if 0
01162
01163 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
01164 return &ast_null_frame;
01165 #endif
01166
01167
01168 if (rtp->nat) {
01169 if ((rtp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
01170 (rtp->them.sin_port != sin.sin_port)) {
01171 rtp->them = sin;
01172 if (rtp->rtcp) {
01173 memcpy(&rtp->rtcp->them, &sin, sizeof(rtp->rtcp->them));
01174 rtp->rtcp->them.sin_port = htons(ntohs(rtp->them.sin_port)+1);
01175 }
01176 rtp->rxseqno = 0;
01177 ast_set_flag(rtp, FLAG_NAT_ACTIVE);
01178 if (option_debug || rtpdebug)
01179 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));
01180 }
01181 }
01182
01183
01184 if ((bridged = ast_rtp_get_bridged(rtp)) && !bridge_p2p_rtp_write(rtp, bridged, rtpheader, res, hdrlen))
01185 return &ast_null_frame;
01186
01187 if (version != 2)
01188 return &ast_null_frame;
01189
01190 payloadtype = (seqno & 0x7f0000) >> 16;
01191 padding = seqno & (1 << 29);
01192 mark = seqno & (1 << 23);
01193 ext = seqno & (1 << 28);
01194 cc = (seqno & 0xF000000) >> 24;
01195 seqno &= 0xffff;
01196 timestamp = ntohl(rtpheader[1]);
01197 ssrc = ntohl(rtpheader[2]);
01198
01199 if (!mark && rtp->rxssrc && rtp->rxssrc != ssrc) {
01200 if (option_debug || rtpdebug)
01201 ast_log(LOG_DEBUG, "Forcing Marker bit, because SSRC has changed\n");
01202 mark = 1;
01203 }
01204
01205 rtp->rxssrc = ssrc;
01206
01207 if (padding) {
01208
01209 res -= rtp->rawdata[AST_FRIENDLY_OFFSET + res - 1];
01210 }
01211
01212 if (cc) {
01213
01214 hdrlen += cc*4;
01215 }
01216
01217 if (ext) {
01218
01219 hdrlen += (ntohl(rtpheader[hdrlen/4]) & 0xffff) << 2;
01220 hdrlen += 4;
01221 }
01222
01223 if (res < hdrlen) {
01224 ast_log(LOG_WARNING, "RTP Read too short (%d, expecting %d)\n", res, hdrlen);
01225 return &ast_null_frame;
01226 }
01227
01228 rtp->rxcount++;
01229
01230 if (rtp->rxcount==1) {
01231
01232 rtp->seedrxseqno = seqno;
01233 }
01234
01235
01236 if (rtp->rtcp && rtp->rtcp->them.sin_addr.s_addr && rtp->rtcp->schedid < 1) {
01237
01238 rtp->rtcp->schedid = ast_sched_add(rtp->sched, ast_rtcp_calc_interval(rtp), ast_rtcp_write, rtp);
01239 }
01240 if ( (int)rtp->lastrxseqno - (int)seqno > 100)
01241 rtp->cycles += RTP_SEQ_MOD;
01242
01243 rtp->lastrxseqno = seqno;
01244
01245 if (rtp->themssrc==0)
01246 rtp->themssrc = ntohl(rtpheader[2]);
01247
01248 if (rtp_debug_test_addr(&sin))
01249 ast_verbose("Got RTP packet from %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
01250 ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port), payloadtype, seqno, timestamp,res - hdrlen);
01251
01252 rtpPT = ast_rtp_lookup_pt(rtp, payloadtype);
01253 if (!rtpPT.isAstFormat) {
01254 struct ast_frame *f = NULL;
01255
01256
01257 if (rtpPT.code == AST_RTP_DTMF) {
01258
01259 if (rtp_debug_test_addr(&sin)) {
01260 unsigned char *data;
01261 unsigned int event;
01262 unsigned int event_end;
01263 unsigned int duration;
01264 data = rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen;
01265 event = ntohl(*((unsigned int *)(data)));
01266 event >>= 24;
01267 event_end = ntohl(*((unsigned int *)(data)));
01268 event_end <<= 8;
01269 event_end >>= 24;
01270 duration = ntohl(*((unsigned int *)(data)));
01271 duration &= 0xFFFF;
01272 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);
01273 }
01274 f = process_rfc2833(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen, seqno, timestamp);
01275 } else if (rtpPT.code == AST_RTP_CISCO_DTMF) {
01276
01277 if (rtp->lastevent <= seqno || (rtp->lastevent >= 65530 && seqno <= 6)) {
01278 f = process_cisco_dtmf(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen);
01279 rtp->lastevent = seqno;
01280 }
01281 } else if (rtpPT.code == AST_RTP_CN) {
01282
01283 f = process_rfc3389(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen);
01284 } else {
01285 ast_log(LOG_NOTICE, "Unknown RTP codec %d received from '%s'\n", payloadtype, ast_inet_ntoa(rtp->them.sin_addr));
01286 }
01287 return f ? f : &ast_null_frame;
01288 }
01289 rtp->lastrxformat = rtp->f.subclass = rtpPT.code;
01290 rtp->f.frametype = (rtp->f.subclass < AST_FORMAT_MAX_AUDIO) ? AST_FRAME_VOICE : AST_FRAME_VIDEO;
01291
01292 if (!rtp->lastrxts)
01293 rtp->lastrxts = timestamp;
01294
01295 rtp->rxseqno = seqno;
01296
01297
01298 rtp->lastrxts = timestamp;
01299
01300 rtp->f.mallocd = 0;
01301 rtp->f.datalen = res - hdrlen;
01302 rtp->f.data = rtp->rawdata + hdrlen + AST_FRIENDLY_OFFSET;
01303 rtp->f.offset = hdrlen + AST_FRIENDLY_OFFSET;
01304 rtp->f.seqno = seqno;
01305 if (rtp->f.subclass < AST_FORMAT_MAX_AUDIO) {
01306 rtp->f.samples = ast_codec_get_samples(&rtp->f);
01307 if (rtp->f.subclass == AST_FORMAT_SLINEAR)
01308 ast_frame_byteswap_be(&rtp->f);
01309 calc_rxstamp(&rtp->f.delivery, rtp, timestamp, mark);
01310
01311 ast_set_flag(&rtp->f, AST_FRFLAG_HAS_TIMING_INFO);
01312 rtp->f.ts = timestamp / 8;
01313 rtp->f.len = rtp->f.samples / (ast_format_rate(rtp->f.subclass) / 1000);
01314 } else {
01315
01316 if (!rtp->lastividtimestamp)
01317 rtp->lastividtimestamp = timestamp;
01318 rtp->f.samples = timestamp - rtp->lastividtimestamp;
01319 rtp->lastividtimestamp = timestamp;
01320 rtp->f.delivery.tv_sec = 0;
01321 rtp->f.delivery.tv_usec = 0;
01322 if (mark)
01323 rtp->f.subclass |= 0x1;
01324
01325 }
01326 rtp->f.src = "RTP";
01327 return &rtp->f;
01328 }
01329
01330
01331
01332 static struct {
01333 struct rtpPayloadType payloadType;
01334 char* type;
01335 char* subtype;
01336 } mimeTypes[] = {
01337 {{1, AST_FORMAT_G723_1}, "audio", "G723"},
01338 {{1, AST_FORMAT_GSM}, "audio", "GSM"},
01339 {{1, AST_FORMAT_ULAW}, "audio", "PCMU"},
01340 {{1, AST_FORMAT_ULAW}, "audio", "G711U"},
01341 {{1, AST_FORMAT_ALAW}, "audio", "PCMA"},
01342 {{1, AST_FORMAT_ALAW}, "audio", "G711A"},
01343 {{1, AST_FORMAT_G726}, "audio", "G726-32"},
01344 {{1, AST_FORMAT_ADPCM}, "audio", "DVI4"},
01345 {{1, AST_FORMAT_SLINEAR}, "audio", "L16"},
01346 {{1, AST_FORMAT_LPC10}, "audio", "LPC"},
01347 {{1, AST_FORMAT_G729A}, "audio", "G729"},
01348 {{1, AST_FORMAT_G729A}, "audio", "G729A"},
01349 {{1, AST_FORMAT_SPEEX}, "audio", "speex"},
01350 {{1, AST_FORMAT_ILBC}, "audio", "iLBC"},
01351 {{1, AST_FORMAT_G722}, "audio", "G722"},
01352 {{1, AST_FORMAT_G726_AAL2}, "audio", "AAL2-G726-32"},
01353 {{0, AST_RTP_DTMF}, "audio", "telephone-event"},
01354 {{0, AST_RTP_CISCO_DTMF}, "audio", "cisco-telephone-event"},
01355 {{0, AST_RTP_CN}, "audio", "CN"},
01356 {{1, AST_FORMAT_JPEG}, "video", "JPEG"},
01357 {{1, AST_FORMAT_PNG}, "video", "PNG"},
01358 {{1, AST_FORMAT_H261}, "video", "H261"},
01359 {{1, AST_FORMAT_H263}, "video", "H263"},
01360 {{1, AST_FORMAT_H263_PLUS}, "video", "h263-1998"},
01361 {{1, AST_FORMAT_H264}, "video", "H264"},
01362 };
01363
01364
01365
01366
01367 static struct rtpPayloadType static_RTP_PT[MAX_RTP_PT] = {
01368 [0] = {1, AST_FORMAT_ULAW},
01369 #ifdef USE_DEPRECATED_G726
01370 [2] = {1, AST_FORMAT_G726},
01371 #endif
01372 [3] = {1, AST_FORMAT_GSM},
01373 [4] = {1, AST_FORMAT_G723_1},
01374 [5] = {1, AST_FORMAT_ADPCM},
01375 [6] = {1, AST_FORMAT_ADPCM},
01376 [7] = {1, AST_FORMAT_LPC10},
01377 [8] = {1, AST_FORMAT_ALAW},
01378 [9] = {1, AST_FORMAT_G722},
01379 [10] = {1, AST_FORMAT_SLINEAR},
01380 [11] = {1, AST_FORMAT_SLINEAR},
01381 [13] = {0, AST_RTP_CN},
01382 [16] = {1, AST_FORMAT_ADPCM},
01383 [17] = {1, AST_FORMAT_ADPCM},
01384 [18] = {1, AST_FORMAT_G729A},
01385 [19] = {0, AST_RTP_CN},
01386 [26] = {1, AST_FORMAT_JPEG},
01387 [31] = {1, AST_FORMAT_H261},
01388 [34] = {1, AST_FORMAT_H263},
01389 [103] = {1, AST_FORMAT_H263_PLUS},
01390 [97] = {1, AST_FORMAT_ILBC},
01391 [99] = {1, AST_FORMAT_H264},
01392 [101] = {0, AST_RTP_DTMF},
01393 [110] = {1, AST_FORMAT_SPEEX},
01394 [111] = {1, AST_FORMAT_G726},
01395 [112] = {1, AST_FORMAT_G726_AAL2},
01396 [121] = {0, AST_RTP_CISCO_DTMF},
01397 };
01398
01399 void ast_rtp_pt_clear(struct ast_rtp* rtp)
01400 {
01401 int i;
01402
01403 if (!rtp)
01404 return;
01405
01406 ast_mutex_lock(&rtp->bridge_lock);
01407
01408 for (i = 0; i < MAX_RTP_PT; ++i) {
01409 rtp->current_RTP_PT[i].isAstFormat = 0;
01410 rtp->current_RTP_PT[i].code = 0;
01411 }
01412
01413 rtp->rtp_lookup_code_cache_isAstFormat = 0;
01414 rtp->rtp_lookup_code_cache_code = 0;
01415 rtp->rtp_lookup_code_cache_result = 0;
01416
01417 ast_mutex_unlock(&rtp->bridge_lock);
01418 }
01419
01420 void ast_rtp_pt_default(struct ast_rtp* rtp)
01421 {
01422 int i;
01423
01424 ast_mutex_lock(&rtp->bridge_lock);
01425
01426
01427 for (i = 0; i < MAX_RTP_PT; ++i) {
01428 rtp->current_RTP_PT[i].isAstFormat = static_RTP_PT[i].isAstFormat;
01429 rtp->current_RTP_PT[i].code = static_RTP_PT[i].code;
01430 }
01431
01432 rtp->rtp_lookup_code_cache_isAstFormat = 0;
01433 rtp->rtp_lookup_code_cache_code = 0;
01434 rtp->rtp_lookup_code_cache_result = 0;
01435
01436 ast_mutex_unlock(&rtp->bridge_lock);
01437 }
01438
01439 void ast_rtp_pt_copy(struct ast_rtp *dest, struct ast_rtp *src)
01440 {
01441 unsigned int i;
01442
01443 ast_mutex_lock(&dest->bridge_lock);
01444 ast_mutex_lock(&src->bridge_lock);
01445
01446 for (i=0; i < MAX_RTP_PT; ++i) {
01447 dest->current_RTP_PT[i].isAstFormat =
01448 src->current_RTP_PT[i].isAstFormat;
01449 dest->current_RTP_PT[i].code =
01450 src->current_RTP_PT[i].code;
01451 }
01452 dest->rtp_lookup_code_cache_isAstFormat = 0;
01453 dest->rtp_lookup_code_cache_code = 0;
01454 dest->rtp_lookup_code_cache_result = 0;
01455
01456 ast_mutex_unlock(&src->bridge_lock);
01457 ast_mutex_unlock(&dest->bridge_lock);
01458 }
01459
01460
01461 static struct ast_rtp_protocol *get_proto(struct ast_channel *chan)
01462 {
01463 struct ast_rtp_protocol *cur = NULL;
01464
01465 AST_LIST_LOCK(&protos);
01466 AST_LIST_TRAVERSE(&protos, cur, list) {
01467 if (cur->type == chan->tech->type)
01468 break;
01469 }
01470 AST_LIST_UNLOCK(&protos);
01471
01472 return cur;
01473 }
01474
01475 int ast_rtp_early_bridge(struct ast_channel *dest, struct ast_channel *src)
01476 {
01477 struct ast_rtp *destp = NULL, *srcp = NULL;
01478 struct ast_rtp *vdestp = NULL, *vsrcp = NULL;
01479 struct ast_rtp_protocol *destpr = NULL, *srcpr = NULL;
01480 enum ast_rtp_get_result audio_dest_res = AST_RTP_GET_FAILED, video_dest_res = AST_RTP_GET_FAILED;
01481 enum ast_rtp_get_result audio_src_res = AST_RTP_GET_FAILED, video_src_res = AST_RTP_GET_FAILED;
01482 int srccodec, destcodec, nat_active = 0;
01483
01484
01485 ast_channel_lock(dest);
01486 if (src) {
01487 while(ast_channel_trylock(src)) {
01488 ast_channel_unlock(dest);
01489 usleep(1);
01490 ast_channel_lock(dest);
01491 }
01492 }
01493
01494
01495 destpr = get_proto(dest);
01496 if (src)
01497 srcpr = get_proto(src);
01498 if (!destpr) {
01499 if (option_debug)
01500 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", dest->name);
01501 ast_channel_unlock(dest);
01502 if (src)
01503 ast_channel_unlock(src);
01504 return 0;
01505 }
01506 if (!srcpr) {
01507 if (option_debug)
01508 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", src ? src->name : "<unspecified>");
01509 ast_channel_unlock(dest);
01510 if (src)
01511 ast_channel_unlock(src);
01512 return 0;
01513 }
01514
01515
01516 audio_dest_res = destpr->get_rtp_info(dest, &destp);
01517 video_dest_res = destpr->get_vrtp_info ? destpr->get_vrtp_info(dest, &vdestp) : AST_RTP_GET_FAILED;
01518 if (srcpr) {
01519 audio_src_res = srcpr->get_rtp_info(src, &srcp);
01520 video_src_res = srcpr->get_vrtp_info ? srcpr->get_vrtp_info(src, &vsrcp) : AST_RTP_GET_FAILED;
01521 }
01522
01523
01524 if (audio_dest_res != AST_RTP_TRY_NATIVE) {
01525
01526 ast_channel_unlock(dest);
01527 if (src)
01528 ast_channel_unlock(src);
01529 return 0;
01530 }
01531 if (audio_src_res == AST_RTP_TRY_NATIVE && srcpr->get_codec)
01532 srccodec = srcpr->get_codec(src);
01533 else
01534 srccodec = 0;
01535 if (audio_dest_res == AST_RTP_TRY_NATIVE && destpr->get_codec)
01536 destcodec = destpr->get_codec(dest);
01537 else
01538 destcodec = 0;
01539
01540 if (!(srccodec & destcodec)) {
01541 ast_channel_unlock(dest);
01542 if (src)
01543 ast_channel_unlock(src);
01544 return 0;
01545 }
01546
01547 if (audio_src_res == AST_RTP_TRY_NATIVE && !srcp->them.sin_addr.s_addr)
01548 srcp = NULL;
01549
01550 if (srcp && (srcp->nat || ast_test_flag(srcp, FLAG_NAT_ACTIVE)))
01551 nat_active = 1;
01552
01553 if (destpr->set_rtp_peer(dest, srcp, vsrcp, srccodec, nat_active))
01554 ast_log(LOG_WARNING, "Channel '%s' failed to setup early bridge to '%s'\n", dest->name, src ? src->name : "<unspecified>");
01555 ast_channel_unlock(dest);
01556 if (src)
01557 ast_channel_unlock(src);
01558 if (option_debug)
01559 ast_log(LOG_DEBUG, "Setting early bridge SDP of '%s' with that of '%s'\n", dest->name, src ? src->name : "<unspecified>");
01560 return 1;
01561 }
01562
01563 int ast_rtp_make_compatible(struct ast_channel *dest, struct ast_channel *src, int media)
01564 {
01565 struct ast_rtp *destp = NULL, *srcp = NULL;
01566 struct ast_rtp *vdestp = NULL, *vsrcp = NULL;
01567 struct ast_rtp_protocol *destpr = NULL, *srcpr = NULL;
01568 enum ast_rtp_get_result audio_dest_res = AST_RTP_GET_FAILED, video_dest_res = AST_RTP_GET_FAILED;
01569 enum ast_rtp_get_result audio_src_res = AST_RTP_GET_FAILED, video_src_res = AST_RTP_GET_FAILED;
01570 int srccodec, destcodec;
01571
01572
01573 ast_channel_lock(dest);
01574 while(ast_channel_trylock(src)) {
01575 ast_channel_unlock(dest);
01576 usleep(1);
01577 ast_channel_lock(dest);
01578 }
01579
01580
01581 if (!(destpr = get_proto(dest))) {
01582 if (option_debug)
01583 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", dest->name);
01584 ast_channel_unlock(dest);
01585 ast_channel_unlock(src);
01586 return 0;
01587 }
01588 if (!(srcpr = get_proto(src))) {
01589 if (option_debug)
01590 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", src->name);
01591 ast_channel_unlock(dest);
01592 ast_channel_unlock(src);
01593 return 0;
01594 }
01595
01596
01597 audio_dest_res = destpr->get_rtp_info(dest, &destp);
01598 video_dest_res = destpr->get_vrtp_info ? destpr->get_vrtp_info(dest, &vdestp) : AST_RTP_GET_FAILED;
01599 audio_src_res = srcpr->get_rtp_info(src, &srcp);
01600 video_src_res = srcpr->get_vrtp_info ? srcpr->get_vrtp_info(src, &vsrcp) : AST_RTP_GET_FAILED;
01601
01602
01603 if (srcpr->get_codec)
01604 srccodec = srcpr->get_codec(src);
01605 else
01606 srccodec = 0;
01607 if (destpr->get_codec)
01608 destcodec = destpr->get_codec(dest);
01609 else
01610 destcodec = 0;
01611
01612
01613 if (audio_dest_res != AST_RTP_TRY_NATIVE || audio_src_res != AST_RTP_TRY_NATIVE || !(srccodec & destcodec)) {
01614
01615 ast_channel_unlock(dest);
01616 ast_channel_unlock(src);
01617 return 0;
01618 }
01619 ast_rtp_pt_copy(destp, srcp);
01620 if (vdestp && vsrcp)
01621 ast_rtp_pt_copy(vdestp, vsrcp);
01622 if (media) {
01623
01624 if (destpr->set_rtp_peer(dest, srcp, vsrcp, srccodec, ast_test_flag(srcp, FLAG_NAT_ACTIVE)))
01625 ast_log(LOG_WARNING, "Channel '%s' failed to setup early bridge to '%s'\n", dest->name, src->name);
01626 }
01627 ast_channel_unlock(dest);
01628 ast_channel_unlock(src);
01629 if (option_debug)
01630 ast_log(LOG_DEBUG, "Seeded SDP of '%s' with that of '%s'\n", dest->name, src->name);
01631 return 1;
01632 }
01633
01634
01635
01636
01637
01638 void ast_rtp_set_m_type(struct ast_rtp* rtp, int pt)
01639 {
01640 if (pt < 0 || pt > MAX_RTP_PT || static_RTP_PT[pt].code == 0)
01641 return;
01642
01643 ast_mutex_lock(&rtp->bridge_lock);
01644 rtp->current_RTP_PT[pt] = static_RTP_PT[pt];
01645 ast_mutex_unlock(&rtp->bridge_lock);
01646 }
01647
01648
01649
01650 void ast_rtp_unset_m_type(struct ast_rtp* rtp, int pt)
01651 {
01652 if (pt < 0 || pt > MAX_RTP_PT)
01653 return;
01654
01655 ast_mutex_lock(&rtp->bridge_lock);
01656 rtp->current_RTP_PT[pt].isAstFormat = 0;
01657 rtp->current_RTP_PT[pt].code = 0;
01658 ast_mutex_unlock(&rtp->bridge_lock);
01659 }
01660
01661
01662
01663
01664
01665 int ast_rtp_set_rtpmap_type(struct ast_rtp *rtp, int pt,
01666 char *mimeType, char *mimeSubtype,
01667 enum ast_rtp_options options)
01668 {
01669 unsigned int i;
01670 int found = 0;
01671
01672 if (pt < 0 || pt > MAX_RTP_PT)
01673 return -1;
01674
01675 ast_mutex_lock(&rtp->bridge_lock);
01676
01677 for (i = 0; i < sizeof(mimeTypes)/sizeof(mimeTypes[0]); ++i) {
01678 if (strcasecmp(mimeSubtype, mimeTypes[i].subtype) == 0 &&
01679 strcasecmp(mimeType, mimeTypes[i].type) == 0) {
01680 found = 1;
01681 rtp->current_RTP_PT[pt] = mimeTypes[i].payloadType;
01682 if ((mimeTypes[i].payloadType.code == AST_FORMAT_G726) &&
01683 mimeTypes[i].payloadType.isAstFormat &&
01684 (options & AST_RTP_OPT_G726_NONSTANDARD))
01685 rtp->current_RTP_PT[pt].code = AST_FORMAT_G726_AAL2;
01686 break;
01687 }
01688 }
01689
01690 ast_mutex_unlock(&rtp->bridge_lock);
01691
01692 return (found ? 0 : -1);
01693 }
01694
01695
01696
01697 void ast_rtp_get_current_formats(struct ast_rtp* rtp,
01698 int* astFormats, int* nonAstFormats)
01699 {
01700 int pt;
01701
01702 ast_mutex_lock(&rtp->bridge_lock);
01703
01704 *astFormats = *nonAstFormats = 0;
01705 for (pt = 0; pt < MAX_RTP_PT; ++pt) {
01706 if (rtp->current_RTP_PT[pt].isAstFormat) {
01707 *astFormats |= rtp->current_RTP_PT[pt].code;
01708 } else {
01709 *nonAstFormats |= rtp->current_RTP_PT[pt].code;
01710 }
01711 }
01712
01713 ast_mutex_unlock(&rtp->bridge_lock);
01714
01715 return;
01716 }
01717
01718 struct rtpPayloadType ast_rtp_lookup_pt(struct ast_rtp* rtp, int pt)
01719 {
01720 struct rtpPayloadType result;
01721
01722 result.isAstFormat = result.code = 0;
01723
01724 if (pt < 0 || pt > MAX_RTP_PT)
01725 return result;
01726
01727
01728 ast_mutex_lock(&rtp->bridge_lock);
01729 result = rtp->current_RTP_PT[pt];
01730 ast_mutex_unlock(&rtp->bridge_lock);
01731
01732
01733 if (!result.code)
01734 result = static_RTP_PT[pt];
01735
01736 return result;
01737 }
01738
01739
01740 int ast_rtp_lookup_code(struct ast_rtp* rtp, const int isAstFormat, const int code)
01741 {
01742 int pt = 0;
01743
01744 ast_mutex_lock(&rtp->bridge_lock);
01745
01746 if (isAstFormat == rtp->rtp_lookup_code_cache_isAstFormat &&
01747 code == rtp->rtp_lookup_code_cache_code) {
01748
01749 pt = rtp->rtp_lookup_code_cache_result;
01750 ast_mutex_unlock(&rtp->bridge_lock);
01751 return pt;
01752 }
01753
01754
01755 for (pt = 0; pt < MAX_RTP_PT; ++pt) {
01756 if (rtp->current_RTP_PT[pt].code == code && rtp->current_RTP_PT[pt].isAstFormat == isAstFormat) {
01757 rtp->rtp_lookup_code_cache_isAstFormat = isAstFormat;
01758 rtp->rtp_lookup_code_cache_code = code;
01759 rtp->rtp_lookup_code_cache_result = pt;
01760 ast_mutex_unlock(&rtp->bridge_lock);
01761 return pt;
01762 }
01763 }
01764
01765
01766 for (pt = 0; pt < MAX_RTP_PT; ++pt) {
01767 if (static_RTP_PT[pt].code == code && static_RTP_PT[pt].isAstFormat == isAstFormat) {
01768 rtp->rtp_lookup_code_cache_isAstFormat = isAstFormat;
01769 rtp->rtp_lookup_code_cache_code = code;
01770 rtp->rtp_lookup_code_cache_result = pt;
01771 ast_mutex_unlock(&rtp->bridge_lock);
01772 return pt;
01773 }
01774 }
01775
01776 ast_mutex_unlock(&rtp->bridge_lock);
01777
01778 return -1;
01779 }
01780
01781 const char *ast_rtp_lookup_mime_subtype(const int isAstFormat, const int code,
01782 enum ast_rtp_options options)
01783 {
01784 unsigned int i;
01785
01786 for (i = 0; i < sizeof(mimeTypes)/sizeof(mimeTypes[0]); ++i) {
01787 if ((mimeTypes[i].payloadType.code == code) && (mimeTypes[i].payloadType.isAstFormat == isAstFormat)) {
01788 if (isAstFormat &&
01789 (code == AST_FORMAT_G726_AAL2) &&
01790 (options & AST_RTP_OPT_G726_NONSTANDARD))
01791 return "G726-32";
01792 else
01793 return mimeTypes[i].subtype;
01794 }
01795 }
01796
01797 return "";
01798 }
01799
01800 char *ast_rtp_lookup_mime_multiple(char *buf, size_t size, const int capability,
01801 const int isAstFormat, enum ast_rtp_options options)
01802 {
01803 int format;
01804 unsigned len;
01805 char *end = buf;
01806 char *start = buf;
01807
01808 if (!buf || !size)
01809 return NULL;
01810
01811 snprintf(end, size, "0x%x (", capability);
01812
01813 len = strlen(end);
01814 end += len;
01815 size -= len;
01816 start = end;
01817
01818 for (format = 1; format < AST_RTP_MAX; format <<= 1) {
01819 if (capability & format) {
01820 const char *name = ast_rtp_lookup_mime_subtype(isAstFormat, format, options);
01821
01822 snprintf(end, size, "%s|", name);
01823 len = strlen(end);
01824 end += len;
01825 size -= len;
01826 }
01827 }
01828
01829 if (start == end)
01830 snprintf(start, size, "nothing)");
01831 else if (size > 1)
01832 *(end -1) = ')';
01833
01834 return buf;
01835 }
01836
01837 static int rtp_socket(void)
01838 {
01839 int s;
01840 long flags;
01841 s = socket(AF_INET, SOCK_DGRAM, 0);
01842 if (s > -1) {
01843 flags = fcntl(s, F_GETFL);
01844 fcntl(s, F_SETFL, flags | O_NONBLOCK);
01845 #ifdef SO_NO_CHECK
01846 if (nochecksums)
01847 setsockopt(s, SOL_SOCKET, SO_NO_CHECK, &nochecksums, sizeof(nochecksums));
01848 #endif
01849 }
01850 return s;
01851 }
01852
01853
01854
01855
01856
01857
01858 static struct ast_rtcp *ast_rtcp_new(void)
01859 {
01860 struct ast_rtcp *rtcp;
01861
01862 if (!(rtcp = ast_calloc(1, sizeof(*rtcp))))
01863 return NULL;
01864 rtcp->s = rtp_socket();
01865 rtcp->us.sin_family = AF_INET;
01866 rtcp->them.sin_family = AF_INET;
01867 rtcp->schedid = -1;
01868
01869 if (rtcp->s < 0) {
01870 free(rtcp);
01871 ast_log(LOG_WARNING, "Unable to allocate RTCP socket: %s\n", strerror(errno));
01872 return NULL;
01873 }
01874
01875 return rtcp;
01876 }
01877
01878
01879
01880
01881
01882 void ast_rtp_new_init(struct ast_rtp *rtp)
01883 {
01884 ast_mutex_init(&rtp->bridge_lock);
01885
01886 rtp->them.sin_family = AF_INET;
01887 rtp->us.sin_family = AF_INET;
01888 rtp->ssrc = ast_random();
01889 rtp->seqno = ast_random() & 0xffff;
01890 ast_set_flag(rtp, FLAG_HAS_DTMF);
01891
01892 return;
01893 }
01894
01895 struct ast_rtp *ast_rtp_new_with_bindaddr(struct sched_context *sched, struct io_context *io, int rtcpenable, int callbackmode, struct in_addr addr)
01896 {
01897 struct ast_rtp *rtp;
01898 int x;
01899 int first;
01900 int startplace;
01901
01902 if (!(rtp = ast_calloc(1, sizeof(*rtp))))
01903 return NULL;
01904
01905 ast_rtp_new_init(rtp);
01906
01907 rtp->s = rtp_socket();
01908 if (rtp->s < 0) {
01909 free(rtp);
01910 ast_log(LOG_ERROR, "Unable to allocate socket: %s\n", strerror(errno));
01911 return NULL;
01912 }
01913 if (sched && rtcpenable) {
01914 rtp->sched = sched;
01915 rtp->rtcp = ast_rtcp_new();
01916 }
01917
01918
01919 x = (ast_random() % (rtpend-rtpstart)) + rtpstart;
01920 x = x & ~1;
01921
01922 startplace = x;
01923
01924 for (;;) {
01925
01926 rtp->us.sin_port = htons(x);
01927 rtp->us.sin_addr = addr;
01928
01929 if (rtp->rtcp) {
01930 rtp->rtcp->us.sin_port = htons(x + 1);
01931 rtp->rtcp->us.sin_addr = addr;
01932 }
01933
01934 if (!(first = bind(rtp->s, (struct sockaddr *)&rtp->us, sizeof(rtp->us))) &&
01935 (!rtp->rtcp || !bind(rtp->rtcp->s, (struct sockaddr *)&rtp->rtcp->us, sizeof(rtp->rtcp->us))))
01936 break;
01937 if (!first) {
01938
01939 close(rtp->s);
01940 rtp->s = rtp_socket();
01941 }
01942 if (errno != EADDRINUSE) {
01943
01944 ast_log(LOG_ERROR, "Unexpected bind error: %s\n", strerror(errno));
01945 close(rtp->s);
01946 if (rtp->rtcp) {
01947 close(rtp->rtcp->s);
01948 free(rtp->rtcp);
01949 }
01950 free(rtp);
01951 return NULL;
01952 }
01953
01954 x += 2;
01955
01956 if (x > rtpend)
01957
01958 x = (rtpstart + 1) & ~1;
01959
01960 if (x == startplace) {
01961
01962 ast_log(LOG_ERROR, "No RTP ports remaining. Can't setup media stream for this call.\n");
01963 close(rtp->s);
01964 if (rtp->rtcp) {
01965 close(rtp->rtcp->s);
01966 free(rtp->rtcp);
01967 }
01968 free(rtp);
01969 return NULL;
01970 }
01971 }
01972 rtp->sched = sched;
01973 rtp->io = io;
01974 if (callbackmode) {
01975 rtp->ioid = ast_io_add(rtp->io, rtp->s, rtpread, AST_IO_IN, rtp);
01976 ast_set_flag(rtp, FLAG_CALLBACK_MODE);
01977 }
01978 ast_rtp_pt_default(rtp);
01979 return rtp;
01980 }
01981
01982 struct ast_rtp *ast_rtp_new(struct sched_context *sched, struct io_context *io, int rtcpenable, int callbackmode)
01983 {
01984 struct in_addr ia;
01985
01986 memset(&ia, 0, sizeof(ia));
01987 return ast_rtp_new_with_bindaddr(sched, io, rtcpenable, callbackmode, ia);
01988 }
01989
01990 int ast_rtp_settos(struct ast_rtp *rtp, int tos)
01991 {
01992 int res;
01993
01994 if ((res = setsockopt(rtp->s, IPPROTO_IP, IP_TOS, &tos, sizeof(tos))))
01995 ast_log(LOG_WARNING, "Unable to set TOS to %d\n", tos);
01996 return res;
01997 }
01998
01999 void ast_rtp_new_source(struct ast_rtp *rtp)
02000 {
02001 rtp->set_marker_bit = 1;
02002 return;
02003 }
02004
02005 void ast_rtp_set_peer(struct ast_rtp *rtp, struct sockaddr_in *them)
02006 {
02007 rtp->them.sin_port = them->sin_port;
02008 rtp->them.sin_addr = them->sin_addr;
02009 if (rtp->rtcp) {
02010 rtp->rtcp->them.sin_port = htons(ntohs(them->sin_port) + 1);
02011 rtp->rtcp->them.sin_addr = them->sin_addr;
02012 }
02013 rtp->rxseqno = 0;
02014 }
02015
02016 int ast_rtp_get_peer(struct ast_rtp *rtp, struct sockaddr_in *them)
02017 {
02018 if ((them->sin_family != AF_INET) ||
02019 (them->sin_port != rtp->them.sin_port) ||
02020 (them->sin_addr.s_addr != rtp->them.sin_addr.s_addr)) {
02021 them->sin_family = AF_INET;
02022 them->sin_port = rtp->them.sin_port;
02023 them->sin_addr = rtp->them.sin_addr;
02024 return 1;
02025 }
02026 return 0;
02027 }
02028
02029 void ast_rtp_get_us(struct ast_rtp *rtp, struct sockaddr_in *us)
02030 {
02031 *us = rtp->us;
02032 }
02033
02034 struct ast_rtp *ast_rtp_get_bridged(struct ast_rtp *rtp)
02035 {
02036 struct ast_rtp *bridged = NULL;
02037
02038 ast_mutex_lock(&rtp->bridge_lock);
02039 bridged = rtp->bridged;
02040 ast_mutex_unlock(&rtp->bridge_lock);
02041
02042 return bridged;
02043 }
02044
02045 void ast_rtp_stop(struct ast_rtp *rtp)
02046 {
02047 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02048
02049 memset(&rtp->them.sin_addr, 0, sizeof(rtp->them.sin_addr));
02050 memset(&rtp->them.sin_port, 0, sizeof(rtp->them.sin_port));
02051 if (rtp->rtcp) {
02052 memset(&rtp->rtcp->them.sin_addr, 0, sizeof(rtp->rtcp->them.sin_addr));
02053 memset(&rtp->rtcp->them.sin_port, 0, sizeof(rtp->rtcp->them.sin_port));
02054 }
02055
02056 ast_clear_flag(rtp, FLAG_P2P_SENT_MARK);
02057 }
02058
02059 void ast_rtp_reset(struct ast_rtp *rtp)
02060 {
02061 memset(&rtp->rxcore, 0, sizeof(rtp->rxcore));
02062 memset(&rtp->txcore, 0, sizeof(rtp->txcore));
02063 memset(&rtp->dtmfmute, 0, sizeof(rtp->dtmfmute));
02064 rtp->lastts = 0;
02065 rtp->lastdigitts = 0;
02066 rtp->lastrxts = 0;
02067 rtp->lastividtimestamp = 0;
02068 rtp->lastovidtimestamp = 0;
02069 rtp->lasteventseqn = 0;
02070 rtp->lastevent = 0;
02071 rtp->lasttxformat = 0;
02072 rtp->lastrxformat = 0;
02073 rtp->dtmfcount = 0;
02074 rtp->dtmfsamples = 0;
02075 rtp->seqno = 0;
02076 rtp->rxseqno = 0;
02077 }
02078
02079 char *ast_rtp_get_quality(struct ast_rtp *rtp, struct ast_rtp_quality *qual)
02080 {
02081
02082
02083
02084
02085
02086
02087
02088
02089
02090
02091
02092
02093 if (qual && rtp) {
02094 qual->local_ssrc = rtp->ssrc;
02095 qual->local_jitter = rtp->rxjitter;
02096 qual->local_count = rtp->rxcount;
02097 qual->remote_ssrc = rtp->themssrc;
02098 qual->remote_count = rtp->txcount;
02099 if (rtp->rtcp) {
02100 qual->local_lostpackets = rtp->rtcp->expected_prior - rtp->rtcp->received_prior;
02101 qual->remote_lostpackets = rtp->rtcp->reported_lost;
02102 qual->remote_jitter = rtp->rtcp->reported_jitter / 65536.0;
02103 qual->rtt = rtp->rtcp->rtt;
02104 }
02105 }
02106 if (rtp->rtcp) {
02107 snprintf(rtp->rtcp->quality, sizeof(rtp->rtcp->quality),
02108 "ssrc=%u;themssrc=%u;lp=%u;rxjitter=%f;rxcount=%u;txjitter=%f;txcount=%u;rlp=%u;rtt=%f",
02109 rtp->ssrc,
02110 rtp->themssrc,
02111 rtp->rtcp->expected_prior - rtp->rtcp->received_prior,
02112 rtp->rxjitter,
02113 rtp->rxcount,
02114 (double)rtp->rtcp->reported_jitter / 65536.0,
02115 rtp->txcount,
02116 rtp->rtcp->reported_lost,
02117 rtp->rtcp->rtt);
02118 return rtp->rtcp->quality;
02119 } else
02120 return "<Unknown> - RTP/RTCP has already been destroyed";
02121 }
02122
02123 void ast_rtp_destroy(struct ast_rtp *rtp)
02124 {
02125 if (rtcp_debug_test_addr(&rtp->them) || rtcpstats) {
02126
02127 ast_verbose(" RTP-stats\n");
02128 ast_verbose("* Our Receiver:\n");
02129 ast_verbose(" SSRC: %u\n", rtp->themssrc);
02130 ast_verbose(" Received packets: %u\n", rtp->rxcount);
02131 ast_verbose(" Lost packets: %u\n", rtp->rtcp->expected_prior - rtp->rtcp->received_prior);
02132 ast_verbose(" Jitter: %.4f\n", rtp->rxjitter);
02133 ast_verbose(" Transit: %.4f\n", rtp->rxtransit);
02134 ast_verbose(" RR-count: %u\n", rtp->rtcp->rr_count);
02135 ast_verbose("* Our Sender:\n");
02136 ast_verbose(" SSRC: %u\n", rtp->ssrc);
02137 ast_verbose(" Sent packets: %u\n", rtp->txcount);
02138 ast_verbose(" Lost packets: %u\n", rtp->rtcp->reported_lost);
02139 ast_verbose(" Jitter: %u\n", rtp->rtcp->reported_jitter / (unsigned int)65536.0);
02140 ast_verbose(" SR-count: %u\n", rtp->rtcp->sr_count);
02141 ast_verbose(" RTT: %f\n", rtp->rtcp->rtt);
02142 }
02143
02144 if (rtp->smoother)
02145 ast_smoother_free(rtp->smoother);
02146 if (rtp->ioid)
02147 ast_io_remove(rtp->io, rtp->ioid);
02148 if (rtp->s > -1)
02149 close(rtp->s);
02150 if (rtp->rtcp) {
02151 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02152 close(rtp->rtcp->s);
02153 free(rtp->rtcp);
02154 rtp->rtcp=NULL;
02155 }
02156
02157 ast_mutex_destroy(&rtp->bridge_lock);
02158
02159 free(rtp);
02160 }
02161
02162 static unsigned int calc_txstamp(struct ast_rtp *rtp, struct timeval *delivery)
02163 {
02164 struct timeval t;
02165 long ms;
02166 if (ast_tvzero(rtp->txcore)) {
02167 rtp->txcore = ast_tvnow();
02168
02169 rtp->txcore.tv_usec -= rtp->txcore.tv_usec % 20000;
02170 }
02171
02172 t = (delivery && !ast_tvzero(*delivery)) ? *delivery : ast_tvnow();
02173 ms = ast_tvdiff_ms(t, rtp->txcore);
02174 if (ms < 0)
02175 ms = 0;
02176
02177 rtp->txcore = t;
02178 return (unsigned int) ms;
02179 }
02180
02181
02182 int ast_rtp_senddigit_begin(struct ast_rtp *rtp, char digit)
02183 {
02184 unsigned int *rtpheader;
02185 int hdrlen = 12, res = 0, i = 0, payload = 0;
02186 char data[256];
02187
02188 if ((digit <= '9') && (digit >= '0'))
02189 digit -= '0';
02190 else if (digit == '*')
02191 digit = 10;
02192 else if (digit == '#')
02193 digit = 11;
02194 else if ((digit >= 'A') && (digit <= 'D'))
02195 digit = digit - 'A' + 12;
02196 else if ((digit >= 'a') && (digit <= 'd'))
02197 digit = digit - 'a' + 12;
02198 else {
02199 ast_log(LOG_WARNING, "Don't know how to represent '%c'\n", digit);
02200 return 0;
02201 }
02202
02203
02204 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
02205 return 0;
02206
02207 payload = ast_rtp_lookup_code(rtp, 0, AST_RTP_DTMF);
02208
02209 rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
02210 rtp->send_duration = 160;
02211
02212
02213 rtpheader = (unsigned int *)data;
02214 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (payload << 16) | (rtp->seqno));
02215 rtpheader[1] = htonl(rtp->lastdigitts);
02216 rtpheader[2] = htonl(rtp->ssrc);
02217
02218 for (i = 0; i < 2; i++) {
02219 rtpheader[3] = htonl((digit << 24) | (0xa << 16) | (rtp->send_duration));
02220 res = sendto(rtp->s, (void *) rtpheader, hdrlen + 4, 0, (struct sockaddr *) &rtp->them, sizeof(rtp->them));
02221 if (res < 0)
02222 ast_log(LOG_ERROR, "RTP Transmission error to %s:%u: %s\n",
02223 ast_inet_ntoa(rtp->them.sin_addr),
02224 ntohs(rtp->them.sin_port), strerror(errno));
02225 if (rtp_debug_test_addr(&rtp->them))
02226 ast_verbose("Sent RTP DTMF packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02227 ast_inet_ntoa(rtp->them.sin_addr),
02228 ntohs(rtp->them.sin_port), payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
02229
02230 rtp->seqno++;
02231
02232 rtp->send_duration += 160;
02233
02234 rtpheader[0] = htonl((2 << 30) | (payload << 16) | (rtp->seqno));
02235 }
02236
02237
02238 rtp->sending_digit = 1;
02239 rtp->send_digit = digit;
02240 rtp->send_payload = payload;
02241
02242 return 0;
02243 }
02244
02245
02246 static int ast_rtp_senddigit_continuation(struct ast_rtp *rtp)
02247 {
02248 unsigned int *rtpheader;
02249 int hdrlen = 12, res = 0;
02250 char data[256];
02251
02252 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
02253 return 0;
02254
02255
02256 rtpheader = (unsigned int *)data;
02257 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (rtp->send_payload << 16) | (rtp->seqno));
02258 rtpheader[1] = htonl(rtp->lastdigitts);
02259 rtpheader[2] = htonl(rtp->ssrc);
02260 rtpheader[3] = htonl((rtp->send_digit << 24) | (0xa << 16) | (rtp->send_duration));
02261 rtpheader[0] = htonl((2 << 30) | (rtp->send_payload << 16) | (rtp->seqno));
02262
02263
02264 res = sendto(rtp->s, (void *) rtpheader, hdrlen + 4, 0, (struct sockaddr *) &rtp->them, sizeof(rtp->them));
02265 if (res < 0)
02266 ast_log(LOG_ERROR, "RTP Transmission error to %s:%d: %s\n",
02267 ast_inet_ntoa(rtp->them.sin_addr),
02268 ntohs(rtp->them.sin_port), strerror(errno));
02269 if (rtp_debug_test_addr(&rtp->them))
02270 ast_verbose("Sent RTP DTMF packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02271 ast_inet_ntoa(rtp->them.sin_addr),
02272 ntohs(rtp->them.sin_port), rtp->send_payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
02273
02274
02275 rtp->seqno++;
02276
02277 rtp->send_duration += 160;
02278
02279 return 0;
02280 }
02281
02282
02283 int ast_rtp_senddigit_end(struct ast_rtp *rtp, char digit)
02284 {
02285 unsigned int *rtpheader;
02286 int hdrlen = 12, res = 0, i = 0;
02287 char data[256];
02288
02289
02290 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
02291 return 0;
02292
02293 if ((digit <= '9') && (digit >= '0'))
02294 digit -= '0';
02295 else if (digit == '*')
02296 digit = 10;
02297 else if (digit == '#')
02298 digit = 11;
02299 else if ((digit >= 'A') && (digit <= 'D'))
02300 digit = digit - 'A' + 12;
02301 else if ((digit >= 'a') && (digit <= 'd'))
02302 digit = digit - 'a' + 12;
02303 else {
02304 ast_log(LOG_WARNING, "Don't know how to represent '%c'\n", digit);
02305 return 0;
02306 }
02307
02308 rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
02309
02310 rtpheader = (unsigned int *)data;
02311 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (rtp->send_payload << 16) | (rtp->seqno));
02312 rtpheader[1] = htonl(rtp->lastdigitts);
02313 rtpheader[2] = htonl(rtp->ssrc);
02314 rtpheader[3] = htonl((digit << 24) | (0xa << 16) | (rtp->send_duration));
02315
02316 rtpheader[3] |= htonl((1 << 23));
02317 rtpheader[0] = htonl((2 << 30) | (rtp->send_payload << 16) | (rtp->seqno));
02318
02319 for (i = 0; i < 3; i++) {
02320 res = sendto(rtp->s, (void *) rtpheader, hdrlen + 4, 0, (struct sockaddr *) &rtp->them, sizeof(rtp->them));
02321 if (res < 0)
02322 ast_log(LOG_ERROR, "RTP Transmission error to %s:%d: %s\n",
02323 ast_inet_ntoa(rtp->them.sin_addr),
02324 ntohs(rtp->them.sin_port), strerror(errno));
02325 if (rtp_debug_test_addr(&rtp->them))
02326 ast_verbose("Sent RTP DTMF packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02327 ast_inet_ntoa(rtp->them.sin_addr),
02328 ntohs(rtp->them.sin_port), rtp->send_payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
02329 }
02330 rtp->sending_digit = 0;
02331 rtp->send_digit = 0;
02332
02333 rtp->lastdigitts += 960;
02334 rtp->seqno++;
02335
02336 return res;
02337 }
02338
02339
02340 int ast_rtcp_send_h261fur(void *data)
02341 {
02342 struct ast_rtp *rtp = data;
02343 int res;
02344
02345 rtp->rtcp->sendfur = 1;
02346 res = ast_rtcp_write(data);
02347
02348 return res;
02349 }
02350
02351
02352 static int ast_rtcp_write_sr(const void *data)
02353 {
02354 struct ast_rtp *rtp = (struct ast_rtp *)data;
02355 int res;
02356 int len = 0;
02357 struct timeval now;
02358 unsigned int now_lsw;
02359 unsigned int now_msw;
02360 unsigned int *rtcpheader;
02361 unsigned int lost;
02362 unsigned int extended;
02363 unsigned int expected;
02364 unsigned int expected_interval;
02365 unsigned int received_interval;
02366 int lost_interval;
02367 int fraction;
02368 struct timeval dlsr;
02369 char bdata[512];
02370
02371
02372 if (!rtp || !rtp->rtcp)
02373 return 0;
02374
02375 if (!rtp->rtcp->them.sin_addr.s_addr) {
02376 ast_verbose("RTCP SR transmission error, rtcp halted\n");
02377 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02378 return 0;
02379 }
02380
02381 gettimeofday(&now, NULL);
02382 timeval2ntp(now, &now_msw, &now_lsw);
02383 rtcpheader = (unsigned int *)bdata;
02384 rtcpheader[1] = htonl(rtp->ssrc);
02385 rtcpheader[2] = htonl(now_msw);
02386 rtcpheader[3] = htonl(now_lsw);
02387 rtcpheader[4] = htonl(rtp->lastts);
02388 rtcpheader[5] = htonl(rtp->txcount);
02389 rtcpheader[6] = htonl(rtp->txoctetcount);
02390 len += 28;
02391
02392 extended = rtp->cycles + rtp->lastrxseqno;
02393 expected = extended - rtp->seedrxseqno + 1;
02394 if (rtp->rxcount > expected)
02395 expected += rtp->rxcount - expected;
02396 lost = expected - rtp->rxcount;
02397 expected_interval = expected - rtp->rtcp->expected_prior;
02398 rtp->rtcp->expected_prior = expected;
02399 received_interval = rtp->rxcount - rtp->rtcp->received_prior;
02400 rtp->rtcp->received_prior = rtp->rxcount;
02401 lost_interval = expected_interval - received_interval;
02402 if (expected_interval == 0 || lost_interval <= 0)
02403 fraction = 0;
02404 else
02405 fraction = (lost_interval << 8) / expected_interval;
02406 timersub(&now, &rtp->rtcp->rxlsr, &dlsr);
02407 rtcpheader[7] = htonl(rtp->themssrc);
02408 rtcpheader[8] = htonl(((fraction & 0xff) << 24) | (lost & 0xffffff));
02409 rtcpheader[9] = htonl((rtp->cycles) | ((rtp->lastrxseqno & 0xffff)));
02410 rtcpheader[10] = htonl((unsigned int)(rtp->rxjitter * 65536.));
02411 rtcpheader[11] = htonl(rtp->rtcp->themrxlsr);
02412 rtcpheader[12] = htonl((((dlsr.tv_sec * 1000) + (dlsr.tv_usec / 1000)) * 65536) / 1000);
02413 len += 24;
02414
02415 rtcpheader[0] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_SR << 16) | ((len/4)-1));
02416
02417 if (rtp->rtcp->sendfur) {
02418 rtcpheader[13] = htonl((2 << 30) | (0 << 24) | (RTCP_PT_FUR << 16) | 1);
02419 rtcpheader[14] = htonl(rtp->ssrc);
02420 len += 8;
02421 rtp->rtcp->sendfur = 0;
02422 }
02423
02424
02425
02426 rtcpheader[len/4] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_SDES << 16) | 2);
02427 rtcpheader[(len/4)+1] = htonl(rtp->ssrc);
02428 rtcpheader[(len/4)+2] = htonl(0x01 << 24);
02429 len += 12;
02430
02431 res = sendto(rtp->rtcp->s, (unsigned int *)rtcpheader, len, 0, (struct sockaddr *)&rtp->rtcp->them, sizeof(rtp->rtcp->them));
02432 if (res < 0) {
02433 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));
02434 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02435 return 0;
02436 }
02437
02438
02439 gettimeofday(&rtp->rtcp->txlsr, NULL);
02440 rtp->rtcp->sr_count++;
02441
02442 rtp->rtcp->lastsrtxcount = rtp->txcount;
02443
02444 if (rtcp_debug_test_addr(&rtp->rtcp->them)) {
02445 ast_verbose("* Sent RTCP SR to %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
02446 ast_verbose(" Our SSRC: %u\n", rtp->ssrc);
02447 ast_verbose(" Sent(NTP): %u.%010u\n", (unsigned int)now.tv_sec, (unsigned int)now.tv_usec*4096);
02448 ast_verbose(" Sent(RTP): %u\n", rtp->lastts);
02449 ast_verbose(" Sent packets: %u\n", rtp->txcount);
02450 ast_verbose(" Sent octets: %u\n", rtp->txoctetcount);
02451 ast_verbose(" Report block:\n");
02452 ast_verbose(" Fraction lost: %u\n", fraction);
02453 ast_verbose(" Cumulative loss: %u\n", lost);
02454 ast_verbose(" IA jitter: %.4f\n", rtp->rxjitter);
02455 ast_verbose(" Their last SR: %u\n", rtp->rtcp->themrxlsr);
02456 ast_verbose(" DLSR: %4.4f (sec)\n\n", (double)(ntohl(rtcpheader[12])/65536.0));
02457 }
02458 return res;
02459 }
02460
02461
02462 static int ast_rtcp_write_rr(const void *data)
02463 {
02464 struct ast_rtp *rtp = (struct ast_rtp *)data;
02465 int res;
02466 int len = 32;
02467 unsigned int lost;
02468 unsigned int extended;
02469 unsigned int expected;
02470 unsigned int expected_interval;
02471 unsigned int received_interval;
02472 int lost_interval;
02473 struct timeval now;
02474 unsigned int *rtcpheader;
02475 char bdata[1024];
02476 struct timeval dlsr;
02477 int fraction;
02478
02479 if (!rtp || !rtp->rtcp || (&rtp->rtcp->them.sin_addr == 0))
02480 return 0;
02481
02482 if (!rtp->rtcp->them.sin_addr.s_addr) {
02483 ast_log(LOG_ERROR, "RTCP RR transmission error, rtcp halted\n");
02484 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02485 return 0;
02486 }
02487
02488 extended = rtp->cycles + rtp->lastrxseqno;
02489 expected = extended - rtp->seedrxseqno + 1;
02490 lost = expected - rtp->rxcount;
02491 expected_interval = expected - rtp->rtcp->expected_prior;
02492 rtp->rtcp->expected_prior = expected;
02493 received_interval = rtp->rxcount - rtp->rtcp->received_prior;
02494 rtp->rtcp->received_prior = rtp->rxcount;
02495 lost_interval = expected_interval - received_interval;
02496 if (expected_interval == 0 || lost_interval <= 0)
02497 fraction = 0;
02498 else
02499 fraction = (lost_interval << 8) / expected_interval;
02500 gettimeofday(&now, NULL);
02501 timersub(&now, &rtp->rtcp->rxlsr, &dlsr);
02502 rtcpheader = (unsigned int *)bdata;
02503 rtcpheader[0] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_RR << 16) | ((len/4)-1));
02504 rtcpheader[1] = htonl(rtp->ssrc);
02505 rtcpheader[2] = htonl(rtp->themssrc);
02506 rtcpheader[3] = htonl(((fraction & 0xff) << 24) | (lost & 0xffffff));
02507 rtcpheader[4] = htonl((rtp->cycles) | ((rtp->lastrxseqno & 0xffff)));
02508 rtcpheader[5] = htonl((unsigned int)(rtp->rxjitter * 65536.));
02509 rtcpheader[6] = htonl(rtp->rtcp->themrxlsr);
02510 rtcpheader[7] = htonl((((dlsr.tv_sec * 1000) + (dlsr.tv_usec / 1000)) * 65536) / 1000);
02511
02512 if (rtp->rtcp->sendfur) {
02513 rtcpheader[8] = htonl((2 << 30) | (0 << 24) | (RTCP_PT_FUR << 16) | 1);
02514 rtcpheader[9] = htonl(rtp->ssrc);
02515 len += 8;
02516 rtp->rtcp->sendfur = 0;
02517 }
02518
02519
02520
02521 rtcpheader[len/4] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_SDES << 16) | 2);
02522 rtcpheader[(len/4)+1] = htonl(rtp->ssrc);
02523 rtcpheader[(len/4)+2] = htonl(0x01 << 24);
02524 len += 12;
02525
02526 res = sendto(rtp->rtcp->s, (unsigned int *)rtcpheader, len, 0, (struct sockaddr *)&rtp->rtcp->them, sizeof(rtp->rtcp->them));
02527
02528 if (res < 0) {
02529 ast_log(LOG_ERROR, "RTCP RR transmission error, rtcp halted: %s\n",strerror(errno));
02530
02531 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02532 return 0;
02533 }
02534
02535 rtp->rtcp->rr_count++;
02536
02537 if (rtcp_debug_test_addr(&rtp->rtcp->them)) {
02538 ast_verbose("\n* Sending RTCP RR to %s:%d\n"
02539 " Our SSRC: %u\nTheir SSRC: %u\niFraction lost: %d\nCumulative loss: %u\n"
02540 " IA jitter: %.4f\n"
02541 " Their last SR: %u\n"
02542 " DLSR: %4.4f (sec)\n\n",
02543 ast_inet_ntoa(rtp->rtcp->them.sin_addr),
02544 ntohs(rtp->rtcp->them.sin_port),
02545 rtp->ssrc, rtp->themssrc, fraction, lost,
02546 rtp->rxjitter,
02547 rtp->rtcp->themrxlsr,
02548 (double)(ntohl(rtcpheader[7])/65536.0));
02549 }
02550
02551 return res;
02552 }
02553
02554
02555
02556
02557 static int ast_rtcp_write(const void *data)
02558 {
02559 struct ast_rtp *rtp = (struct ast_rtp *)data;
02560 int res;
02561
02562 if (!rtp || !rtp->rtcp)
02563 return 0;
02564
02565 if (rtp->txcount > rtp->rtcp->lastsrtxcount)
02566 res = ast_rtcp_write_sr(data);
02567 else
02568 res = ast_rtcp_write_rr(data);
02569
02570 return res;
02571 }
02572
02573
02574 int ast_rtp_sendcng(struct ast_rtp *rtp, int level)
02575 {
02576 unsigned int *rtpheader;
02577 int hdrlen = 12;
02578 int res;
02579 int payload;
02580 char data[256];
02581 level = 127 - (level & 0x7f);
02582 payload = ast_rtp_lookup_code(rtp, 0, AST_RTP_CN);
02583
02584
02585 if (!rtp->them.sin_addr.s_addr)
02586 return 0;
02587
02588 rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
02589
02590
02591 rtpheader = (unsigned int *)data;
02592 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (payload << 16) | (rtp->seqno++));
02593 rtpheader[1] = htonl(rtp->lastts);
02594 rtpheader[2] = htonl(rtp->ssrc);
02595 data[12] = level;
02596 if (rtp->them.sin_port && rtp->them.sin_addr.s_addr) {
02597 res = sendto(rtp->s, (void *)rtpheader, hdrlen + 1, 0, (struct sockaddr *)&rtp->them, sizeof(rtp->them));
02598 if (res <0)
02599 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));
02600 if (rtp_debug_test_addr(&rtp->them))
02601 ast_verbose("Sent Comfort Noise RTP packet to %s:%u (type %d, seq %u, ts %u, len %d)\n"
02602 , ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port), payload, rtp->seqno, rtp->lastts,res - hdrlen);
02603
02604 }
02605 return 0;
02606 }
02607
02608 static int ast_rtp_raw_write(struct ast_rtp *rtp, struct ast_frame *f, int codec)
02609 {
02610 unsigned char *rtpheader;
02611 int hdrlen = 12;
02612 int res;
02613 unsigned int ms;
02614 int pred;
02615 int mark = 0;
02616
02617 ms = calc_txstamp(rtp, &f->delivery);
02618
02619 if (f->frametype == AST_FRAME_VOICE) {
02620 pred = rtp->lastts + f->samples;
02621
02622
02623 rtp->lastts = rtp->lastts + ms * 8;
02624 if (ast_tvzero(f->delivery)) {
02625
02626
02627 if (abs(rtp->lastts - pred) < MAX_TIMESTAMP_SKEW)
02628 rtp->lastts = pred;
02629 else {
02630 if (option_debug > 2)
02631 ast_log(LOG_DEBUG, "Difference is %d, ms is %d\n", abs(rtp->lastts - pred), ms);
02632 mark = 1;
02633 }
02634 }
02635 } else if (f->frametype == AST_FRAME_VIDEO) {
02636 mark = f->subclass & 0x1;
02637 pred = rtp->lastovidtimestamp + f->samples;
02638
02639 rtp->lastts = rtp->lastts + ms * 90;
02640
02641 if (ast_tvzero(f->delivery)) {
02642 if (abs(rtp->lastts - pred) < 7200) {
02643 rtp->lastts = pred;
02644 rtp->lastovidtimestamp += f->samples;
02645 } else {
02646 if (option_debug > 2)
02647 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);
02648 rtp->lastovidtimestamp = rtp->lastts;
02649 }
02650 }
02651 }
02652
02653
02654 if (rtp->set_marker_bit) {
02655 mark = 1;
02656 rtp->set_marker_bit = 0;
02657 }
02658
02659
02660
02661
02662 if (rtp->lastts > rtp->lastdigitts)
02663 rtp->lastdigitts = rtp->lastts;
02664
02665 if (ast_test_flag(f, AST_FRFLAG_HAS_TIMING_INFO))
02666 rtp->lastts = f->ts * 8;
02667
02668
02669 rtpheader = (unsigned char *)(f->data - hdrlen);
02670
02671 put_unaligned_uint32(rtpheader, htonl((2 << 30) | (codec << 16) | (rtp->seqno) | (mark << 23)));
02672 put_unaligned_uint32(rtpheader + 4, htonl(rtp->lastts));
02673 put_unaligned_uint32(rtpheader + 8, htonl(rtp->ssrc));
02674
02675 if (rtp->them.sin_port && rtp->them.sin_addr.s_addr) {
02676 res = sendto(rtp->s, (void *)rtpheader, f->datalen + hdrlen, 0, (struct sockaddr *)&rtp->them, sizeof(rtp->them));
02677 if (res <0) {
02678 if (!rtp->nat || (rtp->nat && (ast_test_flag(rtp, FLAG_NAT_ACTIVE) == FLAG_NAT_ACTIVE))) {
02679 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));
02680 } else if (((ast_test_flag(rtp, FLAG_NAT_ACTIVE) == FLAG_NAT_INACTIVE) || rtpdebug) && !ast_test_flag(rtp, FLAG_NAT_INACTIVE_NOWARN)) {
02681
02682 if (option_debug || rtpdebug)
02683 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));
02684 ast_set_flag(rtp, FLAG_NAT_INACTIVE_NOWARN);
02685 }
02686 } else {
02687 rtp->txcount++;
02688 rtp->txoctetcount +=(res - hdrlen);
02689
02690 if (rtp->rtcp && rtp->rtcp->schedid < 1)
02691 rtp->rtcp->schedid = ast_sched_add(rtp->sched, ast_rtcp_calc_interval(rtp), ast_rtcp_write, rtp);
02692 }
02693
02694 if (rtp_debug_test_addr(&rtp->them))
02695 ast_verbose("Sent RTP packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02696 ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port), codec, rtp->seqno, rtp->lastts,res - hdrlen);
02697 }
02698
02699 rtp->seqno++;
02700
02701 return 0;
02702 }
02703
02704 int ast_rtp_codec_setpref(struct ast_rtp *rtp, struct ast_codec_pref *prefs)
02705 {
02706 int x;
02707 for (x = 0; x < 32; x++) {
02708 rtp->pref.order[x] = prefs->order[x];
02709 rtp->pref.framing[x] = prefs->framing[x];
02710 }
02711 if (rtp->smoother)
02712 ast_smoother_free(rtp->smoother);
02713 rtp->smoother = NULL;
02714 return 0;
02715 }
02716
02717 struct ast_codec_pref *ast_rtp_codec_getpref(struct ast_rtp *rtp)
02718 {
02719 return &rtp->pref;
02720 }
02721
02722 int ast_rtp_codec_getformat(int pt)
02723 {
02724 if (pt < 0 || pt > MAX_RTP_PT)
02725 return 0;
02726
02727 if (static_RTP_PT[pt].isAstFormat)
02728 return static_RTP_PT[pt].code;
02729 else
02730 return 0;
02731 }
02732
02733 int ast_rtp_write(struct ast_rtp *rtp, struct ast_frame *_f)
02734 {
02735 struct ast_frame *f;
02736 int codec;
02737 int hdrlen = 12;
02738 int subclass;
02739
02740
02741
02742 if (!rtp->them.sin_addr.s_addr)
02743 return 0;
02744
02745
02746 if (!_f->datalen)
02747 return 0;
02748
02749
02750 if ((_f->frametype != AST_FRAME_VOICE) && (_f->frametype != AST_FRAME_VIDEO)) {
02751 ast_log(LOG_WARNING, "RTP can only send voice and video\n");
02752 return -1;
02753 }
02754
02755 subclass = _f->subclass;
02756 if (_f->frametype == AST_FRAME_VIDEO)
02757 subclass &= ~0x1;
02758
02759 codec = ast_rtp_lookup_code(rtp, 1, subclass);
02760 if (codec < 0) {
02761 ast_log(LOG_WARNING, "Don't know how to send format %s packets with RTP\n", ast_getformatname(_f->subclass));
02762 return -1;
02763 }
02764
02765 if (rtp->lasttxformat != subclass) {
02766
02767 if (option_debug)
02768 ast_log(LOG_DEBUG, "Ooh, format changed from %s to %s\n", ast_getformatname(rtp->lasttxformat), ast_getformatname(subclass));
02769 rtp->lasttxformat = subclass;
02770 if (rtp->smoother)
02771 ast_smoother_free(rtp->smoother);
02772 rtp->smoother = NULL;
02773 }
02774
02775 if (!rtp->smoother && subclass != AST_FORMAT_SPEEX && subclass != AST_FORMAT_G723_1) {
02776 struct ast_format_list fmt = ast_codec_pref_getsize(&rtp->pref, subclass);
02777 if (fmt.inc_ms) {
02778 if (!(rtp->smoother = ast_smoother_new((fmt.cur_ms * fmt.fr_len) / fmt.inc_ms))) {
02779 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));
02780 return -1;
02781 }
02782 if (fmt.flags)
02783 ast_smoother_set_flags(rtp->smoother, fmt.flags);
02784 if (option_debug)
02785 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));
02786 }
02787 }
02788 if (rtp->smoother) {
02789 if (ast_smoother_test_flag(rtp->smoother, AST_SMOOTHER_FLAG_BE)) {
02790 ast_smoother_feed_be(rtp->smoother, _f);
02791 } else {
02792 ast_smoother_feed(rtp->smoother, _f);
02793 }
02794
02795 while ((f = ast_smoother_read(rtp->smoother)) && (f->data)) {
02796 if (f->subclass == AST_FORMAT_G722) {
02797
02798 f->samples /= 2;
02799 }
02800
02801 ast_rtp_raw_write(rtp, f, codec);
02802 }
02803 } else {
02804
02805 if (_f->offset < hdrlen) {
02806 f = ast_frdup(_f);
02807 } else {
02808 f = _f;
02809 }
02810 if (f->data) {
02811 if (f->subclass == AST_FORMAT_G722) {
02812
02813 f->samples /= 2;
02814 }
02815 ast_rtp_raw_write(rtp, f, codec);
02816 }
02817 if (f != _f)
02818 ast_frfree(f);
02819 }
02820
02821 return 0;
02822 }
02823
02824
02825 void ast_rtp_proto_unregister(struct ast_rtp_protocol *proto)
02826 {
02827 AST_LIST_LOCK(&protos);
02828 AST_LIST_REMOVE(&protos, proto, list);
02829 AST_LIST_UNLOCK(&protos);
02830 }
02831
02832
02833 int ast_rtp_proto_register(struct ast_rtp_protocol *proto)
02834 {
02835 struct ast_rtp_protocol *cur;
02836
02837 AST_LIST_LOCK(&protos);
02838 AST_LIST_TRAVERSE(&protos, cur, list) {
02839 if (!strcmp(cur->type, proto->type)) {
02840 ast_log(LOG_WARNING, "Tried to register same protocol '%s' twice\n", cur->type);
02841 AST_LIST_UNLOCK(&protos);
02842 return -1;
02843 }
02844 }
02845 AST_LIST_INSERT_HEAD(&protos, proto, list);
02846 AST_LIST_UNLOCK(&protos);
02847
02848 return 0;
02849 }
02850
02851
02852 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)
02853 {
02854 struct ast_frame *fr = NULL;
02855 struct ast_channel *who = NULL, *other = NULL, *cs[3] = {NULL, };
02856 int oldcodec0 = codec0, oldcodec1 = codec1;
02857 struct sockaddr_in ac1 = {0,}, vac1 = {0,}, ac0 = {0,}, vac0 = {0,};
02858 struct sockaddr_in t1 = {0,}, vt1 = {0,}, t0 = {0,}, vt0 = {0,};
02859
02860
02861
02862
02863 if (!(pr0->set_rtp_peer(c0, p1, vp1, codec1, ast_test_flag(p1, FLAG_NAT_ACTIVE)))) {
02864 ast_rtp_get_peer(p1, &ac1);
02865 if (vp1)
02866 ast_rtp_get_peer(vp1, &vac1);
02867 } else
02868 ast_log(LOG_WARNING, "Channel '%s' failed to talk to '%s'\n", c0->name, c1->name);
02869
02870
02871 if (!(pr1->set_rtp_peer(c1, p0, vp0, codec0, ast_test_flag(p0, FLAG_NAT_ACTIVE)))) {
02872 ast_rtp_get_peer(p0, &ac0);
02873 if (vp0)
02874 ast_rtp_get_peer(vp0, &vac0);
02875 } else
02876 ast_log(LOG_WARNING, "Channel '%s' failed to talk to '%s'\n", c1->name, c0->name);
02877
02878
02879 ast_channel_unlock(c0);
02880 ast_channel_unlock(c1);
02881
02882
02883 cs[0] = c0;
02884 cs[1] = c1;
02885 cs[2] = NULL;
02886 for (;;) {
02887
02888 if ((c0->tech_pvt != pvt0) ||
02889 (c1->tech_pvt != pvt1) ||
02890 (c0->masq || c0->masqr || c1->masq || c1->masqr) ||
02891 (c0->monitor || c0->audiohooks || c1->monitor || c1->audiohooks)) {
02892 ast_log(LOG_DEBUG, "Oooh, something is weird, backing out\n");
02893 if (c0->tech_pvt == pvt0)
02894 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02895 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02896 if (c1->tech_pvt == pvt1)
02897 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02898 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02899 return AST_BRIDGE_RETRY;
02900 }
02901
02902
02903 ast_rtp_get_peer(p1, &t1);
02904 if (vp1)
02905 ast_rtp_get_peer(vp1, &vt1);
02906 if (pr1->get_codec)
02907 codec1 = pr1->get_codec(c1);
02908 ast_rtp_get_peer(p0, &t0);
02909 if (vp0)
02910 ast_rtp_get_peer(vp0, &vt0);
02911 if (pr0->get_codec)
02912 codec0 = pr0->get_codec(c0);
02913 if ((inaddrcmp(&t1, &ac1)) ||
02914 (vp1 && inaddrcmp(&vt1, &vac1)) ||
02915 (codec1 != oldcodec1)) {
02916 if (option_debug > 1) {
02917 ast_log(LOG_DEBUG, "Oooh, '%s' changed end address to %s:%d (format %d)\n",
02918 c1->name, ast_inet_ntoa(t1.sin_addr), ntohs(t1.sin_port), codec1);
02919 ast_log(LOG_DEBUG, "Oooh, '%s' changed end vaddress to %s:%d (format %d)\n",
02920 c1->name, ast_inet_ntoa(vt1.sin_addr), ntohs(vt1.sin_port), codec1);
02921 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d/(format %d)\n",
02922 c1->name, ast_inet_ntoa(ac1.sin_addr), ntohs(ac1.sin_port), oldcodec1);
02923 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d/(format %d)\n",
02924 c1->name, ast_inet_ntoa(vac1.sin_addr), ntohs(vac1.sin_port), oldcodec1);
02925 }
02926 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)))
02927 ast_log(LOG_WARNING, "Channel '%s' failed to update to '%s'\n", c0->name, c1->name);
02928 memcpy(&ac1, &t1, sizeof(ac1));
02929 memcpy(&vac1, &vt1, sizeof(vac1));
02930 oldcodec1 = codec1;
02931 }
02932 if ((inaddrcmp(&t0, &ac0)) ||
02933 (vp0 && inaddrcmp(&vt0, &vac0))) {
02934 if (option_debug > 1) {
02935 ast_log(LOG_DEBUG, "Oooh, '%s' changed end address to %s:%d (format %d)\n",
02936 c0->name, ast_inet_ntoa(t0.sin_addr), ntohs(t0.sin_port), codec0);
02937 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d/(format %d)\n",
02938 c0->name, ast_inet_ntoa(ac0.sin_addr), ntohs(ac0.sin_port), oldcodec0);
02939 }
02940 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)))
02941 ast_log(LOG_WARNING, "Channel '%s' failed to update to '%s'\n", c1->name, c0->name);
02942 memcpy(&ac0, &t0, sizeof(ac0));
02943 memcpy(&vac0, &vt0, sizeof(vac0));
02944 oldcodec0 = codec0;
02945 }
02946
02947
02948 if (!(who = ast_waitfor_n(cs, 2, &timeoutms))) {
02949 if (!timeoutms) {
02950 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02951 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02952 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02953 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02954 return AST_BRIDGE_RETRY;
02955 }
02956 if (option_debug)
02957 ast_log(LOG_DEBUG, "Ooh, empty read...\n");
02958 if (ast_check_hangup(c0) || ast_check_hangup(c1))
02959 break;
02960 continue;
02961 }
02962 fr = ast_read(who);
02963 other = (who == c0) ? c1 : c0;
02964 if (!fr || ((fr->frametype == AST_FRAME_DTMF_BEGIN || fr->frametype == AST_FRAME_DTMF_END) &&
02965 (((who == c0) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) ||
02966 ((who == c1) && (flags & AST_BRIDGE_DTMF_CHANNEL_1))))) {
02967
02968 *fo = fr;
02969 *rc = who;
02970 if (option_debug)
02971 ast_log(LOG_DEBUG, "Oooh, got a %s\n", fr ? "digit" : "hangup");
02972 if (c0->tech_pvt == pvt0)
02973 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02974 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02975 if (c1->tech_pvt == pvt1)
02976 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02977 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02978 return AST_BRIDGE_COMPLETE;
02979 } else if ((fr->frametype == AST_FRAME_CONTROL) && !(flags & AST_BRIDGE_IGNORE_SIGS)) {
02980 if ((fr->subclass == AST_CONTROL_HOLD) ||
02981 (fr->subclass == AST_CONTROL_UNHOLD) ||
02982 (fr->subclass == AST_CONTROL_VIDUPDATE) ||
02983 (fr->subclass == AST_CONTROL_SRCUPDATE)) {
02984 if (fr->subclass == AST_CONTROL_HOLD) {
02985
02986 if (who == c0)
02987 pr1->set_rtp_peer(c1, NULL, NULL, 0, 0);
02988 else
02989 pr0->set_rtp_peer(c0, NULL, NULL, 0, 0);
02990 } else if (fr->subclass == AST_CONTROL_UNHOLD) {
02991
02992 if (who == c0)
02993 pr1->set_rtp_peer(c1, p0, vp0, codec0, ast_test_flag(p0, FLAG_NAT_ACTIVE));
02994 else
02995 pr0->set_rtp_peer(c0, p1, vp1, codec1, ast_test_flag(p1, FLAG_NAT_ACTIVE));
02996 }
02997
02998 ast_rtp_get_peer(p0, &t0);
02999 memcpy(&ac0, &t0, sizeof(ac0));
03000 ast_rtp_get_peer(p1, &t1);
03001 memcpy(&ac1, &t1, sizeof(ac1));
03002
03003 if (pr0->get_codec && c0->tech_pvt)
03004 oldcodec0 = codec0 = pr0->get_codec(c0);
03005 if (pr1->get_codec && c1->tech_pvt)
03006 oldcodec1 = codec1 = pr1->get_codec(c1);
03007 ast_indicate_data(other, fr->subclass, fr->data, fr->datalen);
03008 ast_frfree(fr);
03009 } else {
03010 *fo = fr;
03011 *rc = who;
03012 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", fr->subclass, who->name);
03013 return AST_BRIDGE_COMPLETE;
03014 }
03015 } else {
03016 if ((fr->frametype == AST_FRAME_DTMF_BEGIN) ||
03017 (fr->frametype == AST_FRAME_DTMF_END) ||
03018 (fr->frametype == AST_FRAME_VOICE) ||
03019 (fr->frametype == AST_FRAME_VIDEO) ||
03020 (fr->frametype == AST_FRAME_IMAGE) ||
03021 (fr->frametype == AST_FRAME_HTML) ||
03022 (fr->frametype == AST_FRAME_MODEM) ||
03023 (fr->frametype == AST_FRAME_TEXT)) {
03024 ast_write(other, fr);
03025 }
03026 ast_frfree(fr);
03027 }
03028
03029 cs[2] = cs[0];
03030 cs[0] = cs[1];
03031 cs[1] = cs[2];
03032 }
03033
03034 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
03035 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
03036 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
03037 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
03038
03039 return AST_BRIDGE_FAILED;
03040 }
03041
03042
03043 #ifdef P2P_INTENSE
03044 static int p2p_rtp_callback(int *id, int fd, short events, void *cbdata)
03045 {
03046 int res = 0, hdrlen = 12;
03047 struct sockaddr_in sin;
03048 socklen_t len;
03049 unsigned int *header;
03050 struct ast_rtp *rtp = cbdata, *bridged = NULL;
03051
03052 if (!rtp)
03053 return 1;
03054
03055 len = sizeof(sin);
03056 if ((res = recvfrom(fd, rtp->rawdata + AST_FRIENDLY_OFFSET, sizeof(rtp->rawdata) - AST_FRIENDLY_OFFSET, 0, (struct sockaddr *)&sin, &len)) < 0)
03057 return 1;
03058
03059 header = (unsigned int *)(rtp->rawdata + AST_FRIENDLY_OFFSET);
03060
03061
03062 if ((rtp->nat) &&
03063 ((rtp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
03064 (rtp->them.sin_port != sin.sin_port))) {
03065 rtp->them = sin;
03066 rtp->rxseqno = 0;
03067 ast_set_flag(rtp, FLAG_NAT_ACTIVE);
03068 if (option_debug || rtpdebug)
03069 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));
03070 }
03071
03072
03073 if ((bridged = ast_rtp_get_bridged(rtp)))
03074 bridge_p2p_rtp_write(rtp, bridged, header, res, hdrlen);
03075
03076 return 1;
03077 }
03078
03079
03080 static int p2p_callback_enable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
03081 {
03082
03083 if (ast_test_flag(rtp, FLAG_P2P_NEED_DTMF) || ast_test_flag(rtp, FLAG_HAS_STUN) || !rtp->io)
03084 return 0;
03085
03086
03087 if (rtp->ioid) {
03088 ast_io_remove(rtp->io, rtp->ioid);
03089 rtp->ioid = NULL;
03090 }
03091
03092
03093 fds[0] = chan->fds[0];
03094 chan->fds[0] = -1;
03095
03096
03097 iod[0] = ast_io_add(rtp->io, fds[0], p2p_rtp_callback, AST_IO_IN, rtp);
03098
03099 return 1;
03100 }
03101 #else
03102 static int p2p_callback_enable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
03103 {
03104 return 0;
03105 }
03106 #endif
03107
03108
03109 static int p2p_callback_disable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
03110 {
03111 ast_channel_lock(chan);
03112
03113
03114 ast_io_remove(rtp->io, iod[0]);
03115
03116
03117 chan->fds[0] = fds[0];
03118 ast_channel_unlock(chan);
03119
03120
03121 if (ast_test_flag(rtp, FLAG_CALLBACK_MODE))
03122 rtp->ioid = ast_io_add(rtp->io, rtp->s, rtpread, AST_IO_IN, rtp);
03123
03124 return 0;
03125 }
03126
03127
03128 static void p2p_set_bridge(struct ast_rtp *rtp0, struct ast_rtp *rtp1)
03129 {
03130 ast_mutex_lock(&rtp0->bridge_lock);
03131 rtp0->bridged = rtp1;
03132 ast_mutex_unlock(&rtp0->bridge_lock);
03133
03134 return;
03135 }
03136
03137
03138 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)
03139 {
03140 struct ast_frame *fr = NULL;
03141 struct ast_channel *who = NULL, *other = NULL, *cs[3] = {NULL, };
03142 int p0_fds[2] = {-1, -1}, p1_fds[2] = {-1, -1};
03143 int *p0_iod[2] = {NULL, NULL}, *p1_iod[2] = {NULL, NULL};
03144 int p0_callback = 0, p1_callback = 0;
03145 enum ast_bridge_result res = AST_BRIDGE_FAILED;
03146
03147
03148 ast_clear_flag(p0, FLAG_P2P_SENT_MARK);
03149 p2p_set_bridge(p0, p1);
03150 ast_clear_flag(p1, FLAG_P2P_SENT_MARK);
03151 p2p_set_bridge(p1, p0);
03152
03153
03154 p0_callback = p2p_callback_enable(c0, p0, &p0_fds[0], &p0_iod[0]);
03155 p1_callback = p2p_callback_enable(c1, p1, &p1_fds[0], &p1_iod[0]);
03156
03157
03158 ast_channel_unlock(c0);
03159 ast_channel_unlock(c1);
03160
03161
03162 cs[0] = c0;
03163 cs[1] = c1;
03164 cs[2] = NULL;
03165 for (;;) {
03166
03167 if ((c0->rawreadformat != c1->rawwriteformat) || (c1->rawreadformat != c0->rawwriteformat)) {
03168 ast_log(LOG_DEBUG, "Oooh, formats changed, backing out\n");
03169 res = AST_BRIDGE_FAILED_NOWARN;
03170 break;
03171 }
03172
03173 if ((c0->tech_pvt != pvt0) ||
03174 (c1->tech_pvt != pvt1) ||
03175 (c0->masq || c0->masqr || c1->masq || c1->masqr) ||
03176 (c0->monitor || c0->audiohooks || c1->monitor || c1->audiohooks)) {
03177 ast_log(LOG_DEBUG, "Oooh, something is weird, backing out\n");
03178 if ((c0->masq || c0->masqr) && (fr = ast_read(c0)))
03179 ast_frfree(fr);
03180 if ((c1->masq || c1->masqr) && (fr = ast_read(c1)))
03181 ast_frfree(fr);
03182 res = AST_BRIDGE_RETRY;
03183 break;
03184 }
03185
03186 if (!(who = ast_waitfor_n(cs, 2, &timeoutms))) {
03187 if (!timeoutms) {
03188 res = AST_BRIDGE_RETRY;
03189 break;
03190 }
03191 if (option_debug)
03192 ast_log(LOG_NOTICE, "Ooh, empty read...\n");
03193 if (ast_check_hangup(c0) || ast_check_hangup(c1))
03194 break;
03195 continue;
03196 }
03197
03198 fr = ast_read(who);
03199 other = (who == c0) ? c1 : c0;
03200
03201 if (!fr || ((fr->frametype == AST_FRAME_DTMF_BEGIN || fr->frametype == AST_FRAME_DTMF_END) &&
03202 ((who == c0) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) |
03203 ((who == c1) && (flags & AST_BRIDGE_DTMF_CHANNEL_1)))) {
03204
03205 *fo = fr;
03206 *rc = who;
03207 if (option_debug)
03208 ast_log(LOG_DEBUG, "Oooh, got a %s\n", fr ? "digit" : "hangup");
03209 res = AST_BRIDGE_COMPLETE;
03210 break;
03211 } else if ((fr->frametype == AST_FRAME_CONTROL) && !(flags & AST_BRIDGE_IGNORE_SIGS)) {
03212 if ((fr->subclass == AST_CONTROL_HOLD) ||
03213 (fr->subclass == AST_CONTROL_UNHOLD) ||
03214 (fr->subclass == AST_CONTROL_VIDUPDATE) ||
03215 (fr->subclass == AST_CONTROL_SRCUPDATE)) {
03216
03217 if (fr->subclass == AST_CONTROL_HOLD) {
03218 if (p0_callback)
03219 p0_callback = p2p_callback_disable(c0, p0, &p0_fds[0], &p0_iod[0]);
03220 if (p1_callback)
03221 p1_callback = p2p_callback_disable(c1, p1, &p1_fds[0], &p1_iod[0]);
03222 p2p_set_bridge(p0, NULL);
03223 p2p_set_bridge(p1, NULL);
03224 } else if (fr->subclass == AST_CONTROL_UNHOLD) {
03225
03226 ast_clear_flag(p0, FLAG_P2P_SENT_MARK);
03227 p2p_set_bridge(p0, p1);
03228 ast_clear_flag(p1, FLAG_P2P_SENT_MARK);
03229 p2p_set_bridge(p1, p0);
03230 p0_callback = p2p_callback_enable(c0, p0, &p0_fds[0], &p0_iod[0]);
03231 p1_callback = p2p_callback_enable(c1, p1, &p1_fds[0], &p1_iod[0]);
03232 }
03233 ast_indicate_data(other, fr->subclass, fr->data, fr->datalen);
03234 ast_frfree(fr);
03235 } else {
03236 *fo = fr;
03237 *rc = who;
03238 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", fr->subclass, who->name);
03239 res = AST_BRIDGE_COMPLETE;
03240 break;
03241 }
03242 } else {
03243 if ((fr->frametype == AST_FRAME_DTMF_BEGIN) ||
03244 (fr->frametype == AST_FRAME_DTMF_END) ||
03245 (fr->frametype == AST_FRAME_VOICE) ||
03246 (fr->frametype == AST_FRAME_VIDEO) ||
03247 (fr->frametype == AST_FRAME_IMAGE) ||
03248 (fr->frametype == AST_FRAME_HTML) ||
03249 (fr->frametype == AST_FRAME_MODEM) ||
03250 (fr->frametype == AST_FRAME_TEXT)) {
03251 ast_write(other, fr);
03252 }
03253
03254 ast_frfree(fr);
03255 }
03256
03257 cs[2] = cs[0];
03258 cs[0] = cs[1];
03259 cs[1] = cs[2];
03260 }
03261
03262
03263 if (p0_callback)
03264 p0_callback = p2p_callback_disable(c0, p0, &p0_fds[0], &p0_iod[0]);
03265 if (p1_callback)
03266 p1_callback = p2p_callback_disable(c1, p1, &p1_fds[0], &p1_iod[0]);
03267
03268
03269 p2p_set_bridge(p0, NULL);
03270 p2p_set_bridge(p1, NULL);
03271
03272 return res;
03273 }
03274
03275
03276
03277
03278 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)
03279 {
03280 struct ast_rtp *p0 = NULL, *p1 = NULL;
03281 struct ast_rtp *vp0 = NULL, *vp1 = NULL;
03282 struct ast_rtp_protocol *pr0 = NULL, *pr1 = NULL;
03283 enum ast_rtp_get_result audio_p0_res = AST_RTP_GET_FAILED, video_p0_res = AST_RTP_GET_FAILED;
03284 enum ast_rtp_get_result audio_p1_res = AST_RTP_GET_FAILED, video_p1_res = AST_RTP_GET_FAILED;
03285 enum ast_bridge_result res = AST_BRIDGE_FAILED;
03286 int codec0 = 0, codec1 = 0;
03287 void *pvt0 = NULL, *pvt1 = NULL;
03288
03289
03290 ast_channel_lock(c0);
03291 while(ast_channel_trylock(c1)) {
03292 ast_channel_unlock(c0);
03293 usleep(1);
03294 ast_channel_lock(c0);
03295 }
03296
03297
03298 if (ast_check_hangup(c0) || ast_check_hangup(c1)) {
03299 ast_log(LOG_WARNING, "Got hangup while attempting to bridge '%s' and '%s'\n", c0->name, c1->name);
03300 ast_channel_unlock(c0);
03301 ast_channel_unlock(c1);
03302 return AST_BRIDGE_FAILED;
03303 }
03304
03305
03306 if (!(pr0 = get_proto(c0))) {
03307 ast_log(LOG_WARNING, "Can't find native functions for channel '%s'\n", c0->name);
03308 ast_channel_unlock(c0);
03309 ast_channel_unlock(c1);
03310 return AST_BRIDGE_FAILED;
03311 }
03312 if (!(pr1 = get_proto(c1))) {
03313 ast_log(LOG_WARNING, "Can't find native functions for channel '%s'\n", c1->name);
03314 ast_channel_unlock(c0);
03315 ast_channel_unlock(c1);
03316 return AST_BRIDGE_FAILED;
03317 }
03318
03319
03320 pvt0 = c0->tech_pvt;
03321 pvt1 = c1->tech_pvt;
03322
03323
03324 audio_p0_res = pr0->get_rtp_info(c0, &p0);
03325 video_p0_res = pr0->get_vrtp_info ? pr0->get_vrtp_info(c0, &vp0) : AST_RTP_GET_FAILED;
03326 audio_p1_res = pr1->get_rtp_info(c1, &p1);
03327 video_p1_res = pr1->get_vrtp_info ? pr1->get_vrtp_info(c1, &vp1) : AST_RTP_GET_FAILED;
03328
03329
03330 if (video_p0_res != AST_RTP_GET_FAILED && (audio_p0_res != AST_RTP_TRY_NATIVE || video_p0_res != AST_RTP_TRY_NATIVE))
03331 audio_p0_res = AST_RTP_GET_FAILED;
03332 if (video_p1_res != AST_RTP_GET_FAILED && (audio_p1_res != AST_RTP_TRY_NATIVE || video_p1_res != AST_RTP_TRY_NATIVE))
03333 audio_p1_res = AST_RTP_GET_FAILED;
03334
03335
03336 if (audio_p0_res == AST_RTP_GET_FAILED || audio_p1_res == AST_RTP_GET_FAILED) {
03337
03338 ast_channel_unlock(c0);
03339 ast_channel_unlock(c1);
03340 return AST_BRIDGE_FAILED_NOWARN;
03341 }
03342
03343
03344 if (ast_test_flag(p0, FLAG_HAS_DTMF) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) {
03345 ast_set_flag(p0, FLAG_P2P_NEED_DTMF);
03346 audio_p0_res = AST_RTP_TRY_PARTIAL;
03347 }
03348
03349 if (ast_test_flag(p1, FLAG_HAS_DTMF) && (flags & AST_BRIDGE_DTMF_CHANNEL_1)) {
03350 ast_set_flag(p1, FLAG_P2P_NEED_DTMF);
03351 audio_p1_res = AST_RTP_TRY_PARTIAL;
03352 }
03353
03354
03355
03356
03357
03358
03359
03360
03361
03362
03363
03364
03365
03366
03367 if ( (ast_test_flag(p0, FLAG_HAS_DTMF) != ast_test_flag(p1, FLAG_HAS_DTMF)) ||
03368 (!c0->tech->send_digit_begin != !c1->tech->send_digit_begin)) {
03369 if (!ast_test_flag(p0, FLAG_P2P_NEED_DTMF) || !ast_test_flag(p1, FLAG_P2P_NEED_DTMF)) {
03370 ast_channel_unlock(c0);
03371 ast_channel_unlock(c1);
03372 return AST_BRIDGE_FAILED_NOWARN;
03373 }
03374 audio_p0_res = AST_RTP_TRY_PARTIAL;
03375 audio_p1_res = AST_RTP_TRY_PARTIAL;
03376 }
03377
03378
03379 if ((audio_p0_res == AST_RTP_TRY_PARTIAL && ast_test_flag(p0, FLAG_P2P_NEED_DTMF)) ||
03380 (audio_p1_res == AST_RTP_TRY_PARTIAL && ast_test_flag(p1, FLAG_P2P_NEED_DTMF))) {
03381 ast_channel_unlock(c0);
03382 ast_channel_unlock(c1);
03383 return AST_BRIDGE_FAILED_NOWARN;
03384 }
03385
03386
03387 codec0 = pr0->get_codec ? pr0->get_codec(c0) : 0;
03388 codec1 = pr1->get_codec ? pr1->get_codec(c1) : 0;
03389 if (codec0 && codec1 && !(codec0 & codec1)) {
03390
03391 if (option_debug)
03392 ast_log(LOG_DEBUG, "Channel codec0 = %d is not codec1 = %d, cannot native bridge in RTP.\n", codec0, codec1);
03393 ast_channel_unlock(c0);
03394 ast_channel_unlock(c1);
03395 return AST_BRIDGE_FAILED_NOWARN;
03396 }
03397
03398
03399 if (audio_p0_res == AST_RTP_TRY_PARTIAL || audio_p1_res == AST_RTP_TRY_PARTIAL) {
03400 struct ast_format_list fmt0, fmt1;
03401
03402
03403 if (c0->rawreadformat != c1->rawwriteformat || c1->rawreadformat != c0->rawwriteformat) {
03404 if (option_debug)
03405 ast_log(LOG_DEBUG, "Cannot packet2packet bridge - raw formats are incompatible\n");
03406 ast_channel_unlock(c0);
03407 ast_channel_unlock(c1);
03408 return AST_BRIDGE_FAILED_NOWARN;
03409 }
03410
03411 fmt0 = ast_codec_pref_getsize(&p0->pref, c0->rawreadformat);
03412 fmt1 = ast_codec_pref_getsize(&p1->pref, c1->rawreadformat);
03413 if (fmt0.cur_ms != fmt1.cur_ms) {
03414 if (option_debug)
03415 ast_log(LOG_DEBUG, "Cannot packet2packet bridge - packetization settings prevent it\n");
03416 ast_channel_unlock(c0);
03417 ast_channel_unlock(c1);
03418 return AST_BRIDGE_FAILED_NOWARN;
03419 }
03420
03421 if (option_verbose > 2)
03422 ast_verbose(VERBOSE_PREFIX_3 "Packet2Packet bridging %s and %s\n", c0->name, c1->name);
03423 res = bridge_p2p_loop(c0, c1, p0, p1, timeoutms, flags, fo, rc, pvt0, pvt1);
03424 } else {
03425 if (option_verbose > 2)
03426 ast_verbose(VERBOSE_PREFIX_3 "Native bridging %s and %s\n", c0->name, c1->name);
03427 res = bridge_native_loop(c0, c1, p0, p1, vp0, vp1, pr0, pr1, codec0, codec1, timeoutms, flags, fo, rc, pvt0, pvt1);
03428 }
03429
03430 return res;
03431 }
03432
03433 static int rtp_do_debug_ip(int fd, int argc, char *argv[])
03434 {
03435 struct hostent *hp;
03436 struct ast_hostent ahp;
03437 int port = 0;
03438 char *p, *arg;
03439
03440 if (argc != 4)
03441 return RESULT_SHOWUSAGE;
03442 arg = argv[3];
03443 p = strstr(arg, ":");
03444 if (p) {
03445 *p = '\0';
03446 p++;
03447 port = atoi(p);
03448 }
03449 hp = ast_gethostbyname(arg, &ahp);
03450 if (hp == NULL)
03451 return RESULT_SHOWUSAGE;
03452 rtpdebugaddr.sin_family = AF_INET;
03453 memcpy(&rtpdebugaddr.sin_addr, hp->h_addr, sizeof(rtpdebugaddr.sin_addr));
03454 rtpdebugaddr.sin_port = htons(port);
03455 if (port == 0)
03456 ast_cli(fd, "RTP Debugging Enabled for IP: %s\n", ast_inet_ntoa(rtpdebugaddr.sin_addr));
03457 else
03458 ast_cli(fd, "RTP Debugging Enabled for IP: %s:%d\n", ast_inet_ntoa(rtpdebugaddr.sin_addr), port);
03459 rtpdebug = 1;
03460 return RESULT_SUCCESS;
03461 }
03462
03463 static int rtcp_do_debug_ip_deprecated(int fd, int argc, char *argv[])
03464 {
03465 struct hostent *hp;
03466 struct ast_hostent ahp;
03467 int port = 0;
03468 char *p, *arg;
03469 if (argc != 5)
03470 return RESULT_SHOWUSAGE;
03471
03472 arg = argv[4];
03473 p = strstr(arg, ":");
03474 if (p) {
03475 *p = '\0';
03476 p++;
03477 port = atoi(p);
03478 }
03479 hp = ast_gethostbyname(arg, &ahp);
03480 if (hp == NULL)
03481 return RESULT_SHOWUSAGE;
03482 rtcpdebugaddr.sin_family = AF_INET;
03483 memcpy(&rtcpdebugaddr.sin_addr, hp->h_addr, sizeof(rtcpdebugaddr.sin_addr));
03484 rtcpdebugaddr.sin_port = htons(port);
03485 if (port == 0)
03486 ast_cli(fd, "RTCP Debugging Enabled for IP: %s\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr));
03487 else
03488 ast_cli(fd, "RTCP Debugging Enabled for IP: %s:%d\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr), port);
03489 rtcpdebug = 1;
03490 return RESULT_SUCCESS;
03491 }
03492
03493 static int rtcp_do_debug_ip(int fd, int argc, char *argv[])
03494 {
03495 struct hostent *hp;
03496 struct ast_hostent ahp;
03497 int port = 0;
03498 char *p, *arg;
03499 if (argc != 4)
03500 return RESULT_SHOWUSAGE;
03501
03502 arg = argv[3];
03503 p = strstr(arg, ":");
03504 if (p) {
03505 *p = '\0';
03506 p++;
03507 port = atoi(p);
03508 }
03509 hp = ast_gethostbyname(arg, &ahp);
03510 if (hp == NULL)
03511 return RESULT_SHOWUSAGE;
03512 rtcpdebugaddr.sin_family = AF_INET;
03513 memcpy(&rtcpdebugaddr.sin_addr, hp->h_addr, sizeof(rtcpdebugaddr.sin_addr));
03514 rtcpdebugaddr.sin_port = htons(port);
03515 if (port == 0)
03516 ast_cli(fd, "RTCP Debugging Enabled for IP: %s\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr));
03517 else
03518 ast_cli(fd, "RTCP Debugging Enabled for IP: %s:%d\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr), port);
03519 rtcpdebug = 1;
03520 return RESULT_SUCCESS;
03521 }
03522
03523 static int rtp_do_debug(int fd, int argc, char *argv[])
03524 {
03525 if (argc != 2) {
03526 if (argc != 4)
03527 return RESULT_SHOWUSAGE;
03528 return rtp_do_debug_ip(fd, argc, argv);
03529 }
03530 rtpdebug = 1;
03531 memset(&rtpdebugaddr,0,sizeof(rtpdebugaddr));
03532 ast_cli(fd, "RTP Debugging Enabled\n");
03533 return RESULT_SUCCESS;
03534 }
03535
03536 static int rtcp_do_debug_deprecated(int fd, int argc, char *argv[]) {
03537 if (argc != 3) {
03538 if (argc != 5)
03539 return RESULT_SHOWUSAGE;
03540 return rtcp_do_debug_ip_deprecated(fd, argc, argv);
03541 }
03542 rtcpdebug = 1;
03543 memset(&rtcpdebugaddr,0,sizeof(rtcpdebugaddr));
03544 ast_cli(fd, "RTCP Debugging Enabled\n");
03545 return RESULT_SUCCESS;
03546 }
03547
03548 static int rtcp_do_debug(int fd, int argc, char *argv[]) {
03549 if (argc != 2) {
03550 if (argc != 4)
03551 return RESULT_SHOWUSAGE;
03552 return rtcp_do_debug_ip(fd, argc, argv);
03553 }
03554 rtcpdebug = 1;
03555 memset(&rtcpdebugaddr,0,sizeof(rtcpdebugaddr));
03556 ast_cli(fd, "RTCP Debugging Enabled\n");
03557 return RESULT_SUCCESS;
03558 }
03559
03560 static int rtcp_do_stats_deprecated(int fd, int argc, char *argv[]) {
03561 if (argc != 3) {
03562 return RESULT_SHOWUSAGE;
03563 }
03564 rtcpstats = 1;
03565 ast_cli(fd, "RTCP Stats Enabled\n");
03566 return RESULT_SUCCESS;
03567 }
03568
03569 static int rtcp_do_stats(int fd, int argc, char *argv[]) {
03570 if (argc != 2) {
03571 return RESULT_SHOWUSAGE;
03572 }
03573 rtcpstats = 1;
03574 ast_cli(fd, "RTCP Stats Enabled\n");
03575 return RESULT_SUCCESS;
03576 }
03577
03578 static int rtp_no_debug(int fd, int argc, char *argv[])
03579 {
03580 if (argc != 3)
03581 return RESULT_SHOWUSAGE;
03582 rtpdebug = 0;
03583 ast_cli(fd,"RTP Debugging Disabled\n");
03584 return RESULT_SUCCESS;
03585 }
03586
03587 static int rtcp_no_debug_deprecated(int fd, int argc, char *argv[])
03588 {
03589 if (argc != 4)
03590 return RESULT_SHOWUSAGE;
03591 rtcpdebug = 0;
03592 ast_cli(fd,"RTCP Debugging Disabled\n");
03593 return RESULT_SUCCESS;
03594 }
03595
03596 static int rtcp_no_debug(int fd, int argc, char *argv[])
03597 {
03598 if (argc != 3)
03599 return RESULT_SHOWUSAGE;
03600 rtcpdebug = 0;
03601 ast_cli(fd,"RTCP Debugging Disabled\n");
03602 return RESULT_SUCCESS;
03603 }
03604
03605 static int rtcp_no_stats_deprecated(int fd, int argc, char *argv[])
03606 {
03607 if (argc != 4)
03608 return RESULT_SHOWUSAGE;
03609 rtcpstats = 0;
03610 ast_cli(fd,"RTCP Stats Disabled\n");
03611 return RESULT_SUCCESS;
03612 }
03613
03614 static int rtcp_no_stats(int fd, int argc, char *argv[])
03615 {
03616 if (argc != 3)
03617 return RESULT_SHOWUSAGE;
03618 rtcpstats = 0;
03619 ast_cli(fd,"RTCP Stats Disabled\n");
03620 return RESULT_SUCCESS;
03621 }
03622
03623 static int stun_do_debug(int fd, int argc, char *argv[])
03624 {
03625 if (argc != 2) {
03626 return RESULT_SHOWUSAGE;
03627 }
03628 stundebug = 1;
03629 ast_cli(fd, "STUN Debugging Enabled\n");
03630 return RESULT_SUCCESS;
03631 }
03632
03633 static int stun_no_debug(int fd, int argc, char *argv[])
03634 {
03635 if (argc != 3)
03636 return RESULT_SHOWUSAGE;
03637 stundebug = 0;
03638 ast_cli(fd, "STUN Debugging Disabled\n");
03639 return RESULT_SUCCESS;
03640 }
03641
03642 static char debug_usage[] =
03643 "Usage: rtp debug [ip host[:port]]\n"
03644 " Enable dumping of all RTP packets to and from host.\n";
03645
03646 static char no_debug_usage[] =
03647 "Usage: rtp debug off\n"
03648 " Disable all RTP debugging\n";
03649
03650 static char stun_debug_usage[] =
03651 "Usage: stun debug\n"
03652 " Enable STUN (Simple Traversal of UDP through NATs) debugging\n";
03653
03654 static char stun_no_debug_usage[] =
03655 "Usage: stun debug off\n"
03656 " Disable STUN debugging\n";
03657
03658 static char rtcp_debug_usage[] =
03659 "Usage: rtcp debug [ip host[:port]]\n"
03660 " Enable dumping of all RTCP packets to and from host.\n";
03661
03662 static char rtcp_no_debug_usage[] =
03663 "Usage: rtcp debug off\n"
03664 " Disable all RTCP debugging\n";
03665
03666 static char rtcp_stats_usage[] =
03667 "Usage: rtcp stats\n"
03668 " Enable dumping of RTCP stats.\n";
03669
03670 static char rtcp_no_stats_usage[] =
03671 "Usage: rtcp stats off\n"
03672 " Disable all RTCP stats\n";
03673
03674 static struct ast_cli_entry cli_rtp_no_debug_deprecated = {
03675 { "rtp", "no", "debug", NULL },
03676 rtp_no_debug, NULL,
03677 NULL };
03678
03679 static struct ast_cli_entry cli_rtp_rtcp_debug_ip_deprecated = {
03680 { "rtp", "rtcp", "debug", "ip", NULL },
03681 rtcp_do_debug_deprecated, NULL,
03682 NULL };
03683
03684 static struct ast_cli_entry cli_rtp_rtcp_debug_deprecated = {
03685 { "rtp", "rtcp", "debug", NULL },
03686 rtcp_do_debug_deprecated, NULL,
03687 NULL };
03688
03689 static struct ast_cli_entry cli_rtp_rtcp_no_debug_deprecated = {
03690 { "rtp", "rtcp", "no", "debug", NULL },
03691 rtcp_no_debug_deprecated, NULL,
03692 NULL };
03693
03694 static struct ast_cli_entry cli_rtp_rtcp_stats_deprecated = {
03695 { "rtp", "rtcp", "stats", NULL },
03696 rtcp_do_stats_deprecated, NULL,
03697 NULL };
03698
03699 static struct ast_cli_entry cli_rtp_rtcp_no_stats_deprecated = {
03700 { "rtp", "rtcp", "no", "stats", NULL },
03701 rtcp_no_stats_deprecated, NULL,
03702 NULL };
03703
03704 static struct ast_cli_entry cli_stun_no_debug_deprecated = {
03705 { "stun", "no", "debug", NULL },
03706 stun_no_debug, NULL,
03707 NULL };
03708
03709 static struct ast_cli_entry cli_rtp[] = {
03710 { { "rtp", "debug", "ip", NULL },
03711 rtp_do_debug, "Enable RTP debugging on IP",
03712 debug_usage },
03713
03714 { { "rtp", "debug", NULL },
03715 rtp_do_debug, "Enable RTP debugging",
03716 debug_usage },
03717
03718 { { "rtp", "debug", "off", NULL },
03719 rtp_no_debug, "Disable RTP debugging",
03720 no_debug_usage, NULL, &cli_rtp_no_debug_deprecated },
03721
03722 { { "rtcp", "debug", "ip", NULL },
03723 rtcp_do_debug, "Enable RTCP debugging on IP",
03724 rtcp_debug_usage, NULL, &cli_rtp_rtcp_debug_ip_deprecated },
03725
03726 { { "rtcp", "debug", NULL },
03727 rtcp_do_debug, "Enable RTCP debugging",
03728 rtcp_debug_usage, NULL, &cli_rtp_rtcp_debug_deprecated },
03729
03730 { { "rtcp", "debug", "off", NULL },
03731 rtcp_no_debug, "Disable RTCP debugging",
03732 rtcp_no_debug_usage, NULL, &cli_rtp_rtcp_no_debug_deprecated },
03733
03734 { { "rtcp", "stats", NULL },
03735 rtcp_do_stats, "Enable RTCP stats",
03736 rtcp_stats_usage, NULL, &cli_rtp_rtcp_stats_deprecated },
03737
03738 { { "rtcp", "stats", "off", NULL },
03739 rtcp_no_stats, "Disable RTCP stats",
03740 rtcp_no_stats_usage, NULL, &cli_rtp_rtcp_no_stats_deprecated },
03741
03742 { { "stun", "debug", NULL },
03743 stun_do_debug, "Enable STUN debugging",
03744 stun_debug_usage },
03745
03746 { { "stun", "debug", "off", NULL },
03747 stun_no_debug, "Disable STUN debugging",
03748 stun_no_debug_usage, NULL, &cli_stun_no_debug_deprecated },
03749 };
03750
03751 int ast_rtp_reload(void)
03752 {
03753 struct ast_config *cfg;
03754 const char *s;
03755
03756 rtpstart = 5000;
03757 rtpend = 31000;
03758 dtmftimeout = DEFAULT_DTMF_TIMEOUT;
03759 cfg = ast_config_load("rtp.conf");
03760 if (cfg) {
03761 if ((s = ast_variable_retrieve(cfg, "general", "rtpstart"))) {
03762 rtpstart = atoi(s);
03763 if (rtpstart < 1024)
03764 rtpstart = 1024;
03765 if (rtpstart > 65535)
03766 rtpstart = 65535;
03767 }
03768 if ((s = ast_variable_retrieve(cfg, "general", "rtpend"))) {
03769 rtpend = atoi(s);
03770 if (rtpend < 1024)
03771 rtpend = 1024;
03772 if (rtpend > 65535)
03773 rtpend = 65535;
03774 }
03775 if ((s = ast_variable_retrieve(cfg, "general", "rtcpinterval"))) {
03776 rtcpinterval = atoi(s);
03777 if (rtcpinterval == 0)
03778 rtcpinterval = 0;
03779 if (rtcpinterval < RTCP_MIN_INTERVALMS)
03780 rtcpinterval = RTCP_MIN_INTERVALMS;
03781 if (rtcpinterval > RTCP_MAX_INTERVALMS)
03782 rtcpinterval = RTCP_MAX_INTERVALMS;
03783 }
03784 if ((s = ast_variable_retrieve(cfg, "general", "rtpchecksums"))) {
03785 #ifdef SO_NO_CHECK
03786 if (ast_false(s))
03787 nochecksums = 1;
03788 else
03789 nochecksums = 0;
03790 #else
03791 if (ast_false(s))
03792 ast_log(LOG_WARNING, "Disabling RTP checksums is not supported on this operating system!\n");
03793 #endif
03794 }
03795 if ((s = ast_variable_retrieve(cfg, "general", "dtmftimeout"))) {
03796 dtmftimeout = atoi(s);
03797 if ((dtmftimeout < 0) || (dtmftimeout > 20000)) {
03798 ast_log(LOG_WARNING, "DTMF timeout of '%d' outside range, using default of '%d' instead\n",
03799 dtmftimeout, DEFAULT_DTMF_TIMEOUT);
03800 dtmftimeout = DEFAULT_DTMF_TIMEOUT;
03801 };
03802 }
03803 ast_config_destroy(cfg);
03804 }
03805 if (rtpstart >= rtpend) {
03806 ast_log(LOG_WARNING, "Unreasonable values for RTP start/end port in rtp.conf\n");
03807 rtpstart = 5000;
03808 rtpend = 31000;
03809 }
03810 if (option_verbose > 1)
03811 ast_verbose(VERBOSE_PREFIX_2 "RTP Allocating from port range %d -> %d\n", rtpstart, rtpend);
03812 return 0;
03813 }
03814
03815
03816 void ast_rtp_init(void)
03817 {
03818 ast_cli_register_multiple(cli_rtp, sizeof(cli_rtp) / sizeof(struct ast_cli_entry));
03819 ast_rtp_reload();
03820 }
03821