Emeric Vigier | 2f62582 | 2012-08-06 11:09:52 -0400 | [diff] [blame] | 1 | // Copyright (C) 2001,2002,2004,2005 Federico Montesino Pouzols <fedemp@altern.org>. |
| 2 | // |
| 3 | // This program is free software; you can redistribute it and/or modify |
| 4 | // it under the terms of the GNU General Public License as published by |
| 5 | // the Free Software Foundation; either version 2 of the License, or |
| 6 | // (at your option) any later version. |
| 7 | // |
| 8 | // This program is distributed in the hope that it will be useful, |
| 9 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | // GNU General Public License for more details. |
| 12 | // |
| 13 | // You should have received a copy of the GNU General Public License |
| 14 | // along with this program; if not, write to the Free Software |
| 15 | // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 16 | // |
| 17 | // As a special exception, you may use this file as part of a free software |
| 18 | // library without restriction. Specifically, if other files instantiate |
| 19 | // templates or use macros or inline functions from this file, or you compile |
| 20 | // this file and link it with other files to produce an executable, this |
| 21 | // file does not by itself cause the resulting executable to be covered by |
| 22 | // the GNU General Public License. This exception does not however |
| 23 | // invalidate any other reasons why the executable file might be covered by |
| 24 | // the GNU General Public License. |
| 25 | // |
| 26 | // This exception applies only to the code released under the name GNU |
| 27 | // ccRTP. If you copy code from other releases into a copy of GNU |
| 28 | // ccRTP, as the General Public License permits, the exception does |
| 29 | // not apply to the code that you add in this way. To avoid misleading |
| 30 | // anyone as to the status of such modified files, you must delete |
| 31 | // this exception notice from them. |
| 32 | // |
| 33 | // If you write modifications of your own for GNU ccRTP, it is your choice |
| 34 | // whether to permit this exception to apply to your modifications. |
| 35 | // If you do not wish that, delete this exception notice. |
| 36 | // |
| 37 | |
| 38 | /** |
| 39 | * @file oqueue.h |
| 40 | * |
| 41 | * @short Generic RTP output queues. |
| 42 | **/ |
| 43 | |
| 44 | #ifndef CCXX_RTP_OQUEUE_H_ |
| 45 | #define CCXX_RTP_OQUEUE_H_ |
| 46 | |
| 47 | #include <ccrtp/queuebase.h> |
| 48 | #include <ccrtp/CryptoContext.h> |
| 49 | #include <list> |
| 50 | |
| 51 | #ifdef CCXX_NAMESPACES |
| 52 | namespace ost { |
| 53 | #endif |
| 54 | |
| 55 | /** |
| 56 | * @defgroup oqueue Generic RTP output queues. |
| 57 | * @{ |
| 58 | **/ |
| 59 | |
| 60 | /** |
| 61 | * @class DestinationListHandler |
| 62 | * |
| 63 | * This class handles a list of destination addresses. Stores network |
| 64 | * addresses as InetAddress objects. |
| 65 | * |
| 66 | * @author Federico Montesino Pouzols <fedemp@altern.org> |
| 67 | **/ |
| 68 | class __EXPORT DestinationListHandler |
| 69 | { |
| 70 | protected: |
| 71 | struct TransportAddress; |
| 72 | std::list<TransportAddress*> destList; |
| 73 | |
| 74 | public: |
| 75 | DestinationListHandler(); |
| 76 | |
| 77 | ~DestinationListHandler(); |
| 78 | |
| 79 | /** |
| 80 | * Get whether there is only a destination in the list. |
| 81 | **/ |
| 82 | inline bool isSingleDestination() const |
| 83 | { return (1 == destList.size()); } |
| 84 | |
| 85 | inline TransportAddress* getFirstDestination() const |
| 86 | { return destList.front(); } |
| 87 | |
| 88 | inline void lockDestinationList() const |
| 89 | { destinationLock.readLock(); } |
| 90 | |
| 91 | inline void unlockDestinationList() const |
| 92 | { destinationLock.unlock(); } |
| 93 | |
| 94 | protected: |
| 95 | inline void writeLockDestinationList() const |
| 96 | { destinationLock.writeLock(); } |
| 97 | |
| 98 | /** |
| 99 | * Locks the object before modifying it. |
| 100 | **/ |
| 101 | bool |
| 102 | addDestinationToList(const InetAddress& ia, tpport_t data, |
| 103 | tpport_t control); |
| 104 | |
| 105 | /** |
| 106 | * Locks the object before modifying it. |
| 107 | **/ |
| 108 | bool removeDestinationFromList(const InetAddress& ia, |
| 109 | tpport_t dataPort, |
| 110 | tpport_t controlPort); |
| 111 | |
| 112 | struct TransportAddress |
| 113 | { |
| 114 | TransportAddress(InetAddress na, tpport_t dtp, tpport_t ctp) : |
| 115 | networkAddress(na), dataTransportPort(dtp), |
| 116 | controlTransportPort(ctp) |
| 117 | { } |
| 118 | |
| 119 | inline const InetAddress& getNetworkAddress() const |
| 120 | { return networkAddress; } |
| 121 | |
| 122 | inline tpport_t getDataTransportPort() const |
| 123 | { return dataTransportPort; } |
| 124 | |
| 125 | inline tpport_t getControlTransportPort() const |
| 126 | { return controlTransportPort; } |
| 127 | |
| 128 | InetAddress networkAddress; |
| 129 | tpport_t dataTransportPort, controlTransportPort; |
| 130 | }; |
| 131 | |
| 132 | private: |
| 133 | mutable ThreadLock destinationLock; |
| 134 | }; |
| 135 | |
| 136 | #ifdef CCXX_IPV6 |
| 137 | /** |
| 138 | * @class DestinationListHandler |
| 139 | * |
| 140 | * This class handles a list of destination addresses. Stores network |
| 141 | * addresses as InetAddress objects. |
| 142 | * |
| 143 | * @author Federico Montesino Pouzols <fedemp@altern.org> |
| 144 | **/ |
| 145 | class __EXPORT DestinationListHandlerIPV6 |
| 146 | { |
| 147 | protected: |
| 148 | struct TransportAddressIPV6; |
| 149 | std::list<TransportAddressIPV6*> destListIPV6; |
| 150 | |
| 151 | public: |
| 152 | DestinationListHandlerIPV6(); |
| 153 | |
| 154 | ~DestinationListHandlerIPV6(); |
| 155 | |
| 156 | /** |
| 157 | * Get whether there is only a destination in the list. |
| 158 | **/ |
| 159 | inline bool isSingleDestinationIPV6() const |
| 160 | { return (1 == destListIPV6.size()); } |
| 161 | |
| 162 | inline TransportAddressIPV6* getFirstDestinationIPV6() const |
| 163 | { return destListIPV6.front(); } |
| 164 | |
| 165 | inline void lockDestinationListIPV6() const |
| 166 | { destinationLock.readLock(); } |
| 167 | |
| 168 | inline void unlockDestinationListIPV6() const |
| 169 | { destinationLock.unlock(); } |
| 170 | |
| 171 | protected: |
| 172 | inline void writeLockDestinationListIPV6() const |
| 173 | { destinationLock.writeLock(); } |
| 174 | |
| 175 | /** |
| 176 | * Locks the object before modifying it. |
| 177 | **/ |
| 178 | bool |
| 179 | addDestinationToListIPV6(const IPV6Address& ia, tpport_t data, |
| 180 | tpport_t control); |
| 181 | |
| 182 | /** |
| 183 | * Locks the object before modifying it. |
| 184 | **/ |
| 185 | bool removeDestinationFromListIPV6(const IPV6Address& ia, |
| 186 | tpport_t dataPort, |
| 187 | tpport_t controlPort); |
| 188 | |
| 189 | struct TransportAddressIPV6 |
| 190 | { |
| 191 | TransportAddressIPV6(IPV6Address na, tpport_t dtp, tpport_t ctp) : |
| 192 | networkAddress(na), dataTransportPort(dtp), |
| 193 | controlTransportPort(ctp) |
| 194 | { } |
| 195 | |
| 196 | inline const IPV6Address& getNetworkAddress() const |
| 197 | { return networkAddress; } |
| 198 | |
| 199 | inline tpport_t getDataTransportPort() const |
| 200 | { return dataTransportPort; } |
| 201 | |
| 202 | inline tpport_t getControlTransportPort() const |
| 203 | { return controlTransportPort; } |
| 204 | |
| 205 | IPV6Address networkAddress; |
| 206 | tpport_t dataTransportPort, controlTransportPort; |
| 207 | }; |
| 208 | |
| 209 | private: |
| 210 | mutable ThreadLock destinationLock; |
| 211 | }; |
| 212 | |
| 213 | #endif |
| 214 | |
| 215 | /** |
| 216 | * @class OutgoingDataQueue |
| 217 | * |
| 218 | * A generic outgoing RTP data queue supporting multiple destinations. |
| 219 | * |
| 220 | * @author Federico Montesino Pouzols <fedemp@altern.org> |
| 221 | **/ |
| 222 | class __EXPORT OutgoingDataQueue: |
| 223 | public OutgoingDataQueueBase, |
| 224 | #ifdef CCXX_IPV6 |
| 225 | protected DestinationListHandlerIPV6, |
| 226 | #endif |
| 227 | protected DestinationListHandler |
| 228 | { |
| 229 | public: |
| 230 | #ifdef CCXX_IPV6 |
| 231 | bool |
| 232 | addDestination(const IPV6Address& ia, |
| 233 | tpport_t dataPort = DefaultRTPDataPort, |
| 234 | tpport_t controlPort = 0); |
| 235 | |
| 236 | bool |
| 237 | forgetDestination(const IPV6Address& ia, |
| 238 | tpport_t dataPort = DefaultRTPDataPort, |
| 239 | tpport_t controlPort = 0); |
| 240 | |
| 241 | #endif |
| 242 | |
| 243 | bool |
| 244 | addDestination(const InetHostAddress& ia, |
| 245 | tpport_t dataPort = DefaultRTPDataPort, |
| 246 | tpport_t controlPort = 0); |
| 247 | |
| 248 | bool |
| 249 | addDestination(const InetMcastAddress& ia, |
| 250 | tpport_t dataPort = DefaultRTPDataPort, |
| 251 | tpport_t controlPort = 0); |
| 252 | |
| 253 | bool |
| 254 | forgetDestination(const InetHostAddress& ia, |
| 255 | tpport_t dataPort = DefaultRTPDataPort, |
| 256 | tpport_t controlPort = 0); |
| 257 | |
| 258 | bool |
| 259 | forgetDestination(const InetMcastAddress& ia, |
| 260 | tpport_t dataPort = DefaultRTPDataPort, |
| 261 | tpport_t controlPort = 0); |
| 262 | |
| 263 | /** |
| 264 | * Add csrc as the CSRC identifier of a new contributor. This |
| 265 | * method adds the CSRC identifier to a list of contributors |
| 266 | * that will be inserted in every packet enqueued from now on. |
| 267 | **/ |
| 268 | void |
| 269 | addContributor(uint32 csrc); |
| 270 | |
| 271 | /** |
| 272 | * Remove CSRC from the list of contributors. |
| 273 | **/ |
| 274 | bool |
| 275 | removeContributor(uint32 csrc); |
| 276 | |
| 277 | /** |
| 278 | * Determine if outgoing packets are waiting to send. |
| 279 | * |
| 280 | * @return true if there are packets waiting to be send. |
| 281 | */ |
| 282 | bool |
| 283 | isSending() const; |
| 284 | |
| 285 | |
| 286 | /** |
| 287 | * This is used to create a data packet in the send queue. |
| 288 | * Sometimes a "NULL" or empty packet will be used instead, and |
| 289 | * these are known as "silent" packets. "Silent" packets are |
| 290 | * used simply to "push" the scheduler along more accurately |
| 291 | * by giving the appearence that a next packet is waiting to |
| 292 | * be sent and to provide a valid timestamp for that packet. |
| 293 | * |
| 294 | * @param stamp Timestamp for expected send time of packet. |
| 295 | * @param data Value or NULL if special "silent" packet. |
| 296 | * @param len May be 0 to indicate a default by payload type. |
| 297 | **/ |
| 298 | void |
| 299 | putData(uint32 stamp, const unsigned char* data = NULL, size_t len = 0); |
| 300 | |
| 301 | /** |
| 302 | * This is used to create a data packet and send it immediately. |
| 303 | * Sometimes a "NULL" or empty packet will be used instead, and |
| 304 | * these are known as "silent" packets. "Silent" packets are |
| 305 | * used simply to "push" the scheduler along more accurately |
| 306 | * by giving the appearence that a next packet is waiting to |
| 307 | * be sent and to provide a valid timestamp for that packet. |
| 308 | * |
| 309 | * @param stamp Timestamp immediate send time of packet. |
| 310 | * @param data Value or NULL if special "silent" packet. |
| 311 | * @param len May be 0 to indicate a default by payload type. |
| 312 | **/ |
| 313 | void |
| 314 | sendImmediate(uint32 stamp, const unsigned char* data = NULL, size_t len = 0); |
| 315 | |
| 316 | |
| 317 | /** |
| 318 | * Set padding. All outgoing packets will be transparently |
| 319 | * padded to a multiple of paddinglen. |
| 320 | * |
| 321 | * @param paddinglen pad packets to a length multiple of paddinglen. |
| 322 | **/ |
| 323 | void setPadding(uint8 paddinglen) |
| 324 | { sendInfo.paddinglen = paddinglen; } |
| 325 | |
| 326 | /** |
| 327 | * Set marker bit for the packet in which the next data |
| 328 | * provided will be send. When transmitting audio, should be |
| 329 | * set for the first packet of a talk spurt. When transmitting |
| 330 | * video, should be set for the last packet for a video frame. |
| 331 | * |
| 332 | * @param mark Marker bit value for next packet. |
| 333 | **/ |
| 334 | void setMark(bool mark) |
| 335 | { sendInfo.marked = mark; } |
| 336 | |
| 337 | /** |
| 338 | * Get wheter the mark bit will be set in the next packet. |
| 339 | **/ |
| 340 | inline bool getMark() const |
| 341 | { return sendInfo.marked; } |
| 342 | |
| 343 | /** |
| 344 | * Set partial data for an already queued packet. This is often |
| 345 | * used for multichannel data. |
| 346 | * |
| 347 | * @param timestamp Timestamp of packet. |
| 348 | * @param data Buffer to copy from. |
| 349 | * @param offset Offset to copy from. |
| 350 | * @param max Maximum data size. |
| 351 | * @return Number of packet data bytes set. |
| 352 | **/ |
| 353 | size_t |
| 354 | setPartial(uint32 timestamp, unsigned char* data, size_t offset, size_t max); |
| 355 | |
| 356 | inline microtimeout_t |
| 357 | getDefaultSchedulingTimeout() const |
| 358 | { return defaultSchedulingTimeout; } |
| 359 | |
| 360 | /** |
| 361 | * Set the default scheduling timeout to use when no data |
| 362 | * packets are waiting to be sent. |
| 363 | * |
| 364 | * @param to timeout in milliseconds. |
| 365 | **/ |
| 366 | inline void |
| 367 | setSchedulingTimeout(microtimeout_t to) |
| 368 | { schedulingTimeout = to; } |
| 369 | |
| 370 | inline microtimeout_t |
| 371 | getDefaultExpireTimeout() const |
| 372 | { return defaultExpireTimeout; } |
| 373 | |
| 374 | /** |
| 375 | * Set the "expired" timer for expiring packets pending in |
| 376 | * the send queue which have gone unsent and are already |
| 377 | * "too late" to be sent now. |
| 378 | * |
| 379 | * @param to timeout to expire unsent packets in milliseconds. |
| 380 | **/ |
| 381 | inline void |
| 382 | setExpireTimeout(microtimeout_t to) |
| 383 | { expireTimeout = to; } |
| 384 | |
| 385 | inline microtimeout_t getExpireTimeout() const |
| 386 | { return expireTimeout; } |
| 387 | |
| 388 | /** |
| 389 | * Get the total number of packets sent so far |
| 390 | * |
| 391 | * @return total number of packets sent |
| 392 | */ |
| 393 | inline uint32 |
| 394 | getSendPacketCount() const |
| 395 | { return sendInfo.packetCount; } |
| 396 | |
| 397 | /** |
| 398 | * Get the total number of octets (payload only) sent so far. |
| 399 | * |
| 400 | * @return total number of payload octets sent in RTP packets. |
| 401 | **/ |
| 402 | inline uint32 |
| 403 | getSendOctetCount() const |
| 404 | { return sendInfo.octetCount; } |
| 405 | |
| 406 | /** |
| 407 | * Get the sequence number of the next outgoing packet. |
| 408 | * |
| 409 | * @return the 16 bit sequence number. |
| 410 | **/ |
| 411 | inline uint16 |
| 412 | getSequenceNumber() const |
| 413 | { return sendInfo.sendSeq; } |
| 414 | |
| 415 | /** |
| 416 | * Set ouput queue CryptoContext. |
| 417 | * |
| 418 | * The endQueue method (provided by RTPQueue) deletes all |
| 419 | * registered CryptoContexts. |
| 420 | * |
| 421 | * @param cc Pointer to initialized CryptoContext. |
| 422 | */ |
| 423 | void |
| 424 | setOutQueueCryptoContext(CryptoContext* cc); |
| 425 | |
| 426 | /** |
| 427 | * Remove output queue CryptoContext. |
| 428 | * |
| 429 | * The endQueue method (provided by RTPQueue) also deletes all |
| 430 | * registered CryptoContexts. |
| 431 | * |
| 432 | * @param cc Pointer to initialized CryptoContext to remove. |
| 433 | */ |
| 434 | void |
| 435 | removeOutQueueCryptoContext(CryptoContext* cc); |
| 436 | |
| 437 | /** |
| 438 | * Get an output queue CryptoContext identified by SSRC |
| 439 | * |
| 440 | * @param ssrc Request CryptoContext for this incoming SSRC |
| 441 | * @return Pointer to CryptoContext of the SSRC of NULL if no context |
| 442 | * available for this SSRC. |
| 443 | */ |
| 444 | CryptoContext* |
| 445 | getOutQueueCryptoContext(uint32 ssrc); |
| 446 | |
| 447 | |
| 448 | protected: |
| 449 | OutgoingDataQueue(); |
| 450 | |
| 451 | virtual ~OutgoingDataQueue() |
| 452 | { } |
| 453 | |
| 454 | struct OutgoingRTPPktLink |
| 455 | { |
| 456 | OutgoingRTPPktLink(OutgoingRTPPkt* pkt, |
| 457 | OutgoingRTPPktLink* p, |
| 458 | OutgoingRTPPktLink* n) : |
| 459 | packet(pkt), prev(p), next(n) { } |
| 460 | |
| 461 | ~OutgoingRTPPktLink() { delete packet; } |
| 462 | |
| 463 | inline OutgoingRTPPkt* getPacket() { return packet; } |
| 464 | |
| 465 | inline void setPacket(OutgoingRTPPkt* pkt) { packet = pkt; } |
| 466 | |
| 467 | inline OutgoingRTPPktLink* getPrev() { return prev; } |
| 468 | |
| 469 | inline void setPrev(OutgoingRTPPktLink* p) { prev = p; } |
| 470 | |
| 471 | inline OutgoingRTPPktLink* getNext() { return next; } |
| 472 | |
| 473 | inline void setNext(OutgoingRTPPktLink* n) { next = n; } |
| 474 | |
| 475 | // the packet this link refers to. |
| 476 | OutgoingRTPPkt* packet; |
| 477 | // global outgoing packets queue. |
| 478 | OutgoingRTPPktLink * prev, * next; |
| 479 | }; |
| 480 | |
| 481 | /** |
| 482 | * This is used to write the RTP data packet to one or more |
| 483 | * destinations. It is used by both sendImmediate and by |
| 484 | * dispatchDataPacket. |
| 485 | * |
| 486 | * @param RTP packet to send. |
| 487 | */ |
| 488 | void |
| 489 | dispatchImmediate(OutgoingRTPPkt *packet); |
| 490 | |
| 491 | /** |
| 492 | * This computes the timeout period for scheduling transmission |
| 493 | * of the next packet at the "head" of the send buffer. If no |
| 494 | * packets are waiting, a default timeout is used. This actually |
| 495 | * forms the "isPending()" timeout of the rtp receiver in the |
| 496 | * service thread. |
| 497 | * |
| 498 | * @return timeout until next packet is scheduled to send. |
| 499 | **/ |
| 500 | microtimeout_t |
| 501 | getSchedulingTimeout(); |
| 502 | |
| 503 | /** |
| 504 | * This function is used by the service thread to process |
| 505 | * the next outgoing packet pending in the sending queue. |
| 506 | * |
| 507 | * @return number of bytes sent. 0 if silent, <0 if error. |
| 508 | **/ |
| 509 | size_t |
| 510 | dispatchDataPacket(); |
| 511 | |
| 512 | /** |
| 513 | * For thoses cases in which the application requires a method |
| 514 | * to set the sequence number for the outgoing stream (such as |
| 515 | * for implementing the RTSP PLAY command). |
| 516 | * |
| 517 | * @param seqNum next sequence number to be used for outgoing packets. |
| 518 | * |
| 519 | **/ |
| 520 | inline void |
| 521 | setNextSeqNum(uint32 seqNum) |
| 522 | { sendInfo.sendSeq = seqNum; } |
| 523 | |
| 524 | inline uint32 |
| 525 | getCurrentSeqNum(void) |
| 526 | { return sendInfo.sendSeq; } |
| 527 | |
| 528 | /** |
| 529 | */ |
| 530 | inline void |
| 531 | setInitialTimestamp(uint32 ts) |
| 532 | { initialTimestamp = ts; } |
| 533 | |
| 534 | /** |
| 535 | */ |
| 536 | inline uint32 |
| 537 | getInitialTimestamp() |
| 538 | { return initialTimestamp; } |
| 539 | |
| 540 | void purgeOutgoingQueue(); |
| 541 | |
| 542 | virtual void |
| 543 | setControlPeer(const InetAddress &host, tpport_t port) {} |
| 544 | |
| 545 | #ifdef CCXX_IPV6 |
| 546 | virtual void |
| 547 | setControlPeerIPV6(const IPV6Address &host, tpport_t port) {} |
| 548 | #endif |
| 549 | |
| 550 | // The crypto contexts for outgoing SRTP sessions. |
| 551 | mutable Mutex cryptoMutex; |
| 552 | std::list<CryptoContext *> cryptoContexts; |
| 553 | |
| 554 | private: |
| 555 | /** |
| 556 | * A hook to filter packets being sent that have been expired. |
| 557 | * |
| 558 | * @param - expired packet from the send queue. |
| 559 | **/ |
| 560 | inline virtual void onExpireSend(OutgoingRTPPkt&) |
| 561 | { } |
| 562 | |
| 563 | virtual void |
| 564 | setDataPeer(const InetAddress &host, tpport_t port) {} |
| 565 | |
| 566 | #ifdef CCXX_IPV6 |
| 567 | virtual void |
| 568 | setDataPeerIPV6(const IPV6Address &host, tpport_t port) {} |
| 569 | #endif |
| 570 | |
| 571 | /** |
| 572 | * This function performs the physical I/O for writing a |
| 573 | * packet to the destination. It is a virtual that is |
| 574 | * overriden in the derived class. |
| 575 | * |
| 576 | * @param buffer Pointer to data to write. |
| 577 | * @param len Length of data to write. |
| 578 | * @return number of bytes sent. |
| 579 | **/ |
| 580 | virtual size_t |
| 581 | sendData(const unsigned char* const buffer, size_t len) {return 0;} |
| 582 | |
| 583 | #ifdef CCXX_IPV6 |
| 584 | virtual size_t |
| 585 | sendDataIPV6(const unsigned char* const buffer, size_t len) {return 0;} |
| 586 | #endif |
| 587 | |
| 588 | static const microtimeout_t defaultSchedulingTimeout; |
| 589 | static const microtimeout_t defaultExpireTimeout; |
| 590 | mutable ThreadLock sendLock; |
| 591 | // outgoing data packets queue |
| 592 | OutgoingRTPPktLink* sendFirst, * sendLast; |
| 593 | uint32 initialTimestamp; |
| 594 | // transmission scheduling timeout for the service thread |
| 595 | microtimeout_t schedulingTimeout; |
| 596 | // how old a packet can reach in the sending queue before deletetion |
| 597 | microtimeout_t expireTimeout; |
| 598 | |
| 599 | |
| 600 | struct { |
| 601 | // number of packets sent from the beginning |
| 602 | uint32 packetCount; |
| 603 | // number of payload octets sent from the beginning |
| 604 | uint32 octetCount; |
| 605 | // the sequence number of the next packet to sent |
| 606 | uint16 sendSeq; |
| 607 | // contributing sources |
| 608 | uint32 sendSources[16]; |
| 609 | // how many CSRCs to send. |
| 610 | uint16 sendCC; |
| 611 | // pad packets to a paddinglen multiple |
| 612 | uint8 paddinglen; |
| 613 | // This flags tells whether to set the bit M in the |
| 614 | // RTP fixed header of the packet in which the next |
| 615 | // provided data will be sent. |
| 616 | bool marked; |
| 617 | // whether there was not loss. |
| 618 | bool complete; |
| 619 | // ramdonly generated offset for the timestamp of sent packets |
| 620 | uint32 initialTimestamp; |
| 621 | // elapsed time accumulated through successive overflows of |
| 622 | // the local timestamp field |
| 623 | timeval overflowTime; |
| 624 | } sendInfo; |
| 625 | }; |
| 626 | |
| 627 | /** @}*/ // oqueue |
| 628 | |
| 629 | #ifdef CCXX_NAMESPACES |
| 630 | } |
| 631 | #endif |
| 632 | |
| 633 | #endif //CCXX_RTP_OQUEUE_H_ |
| 634 | |
| 635 | /** EMACS ** |
| 636 | * Local variables: |
| 637 | * mode: c++ |
| 638 | * c-basic-offset: 8 |
| 639 | * End: |
| 640 | */ |