mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-25 09:18:54 -05:00
664 lines
30 KiB
C++
664 lines
30 KiB
C++
/*
|
|
|
|
This file is a part of JRTPLIB
|
|
Copyright (c) 1999-2017 Jori Liesenborgs
|
|
|
|
Contact: jori.liesenborgs@gmail.com
|
|
|
|
This library was developed at the Expertise Centre for Digital Media
|
|
(http://www.edm.uhasselt.be), a research center of the Hasselt University
|
|
(http://www.uhasselt.be). The library is based upon work done for
|
|
my thesis at the School for Knowledge Technology (Belgium/The Netherlands).
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a
|
|
copy of this software and associated documentation files (the "Software"),
|
|
to deal in the Software without restriction, including without limitation
|
|
the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
and/or sell copies of the Software, and to permit persons to whom the
|
|
Software is furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included
|
|
in all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
IN THE SOFTWARE.
|
|
|
|
*/
|
|
|
|
/**
|
|
* \file rtpsession.h
|
|
*/
|
|
|
|
#ifndef RTPSESSION_H
|
|
|
|
#define RTPSESSION_H
|
|
|
|
#include "rtpconfig.h"
|
|
#include "rtppacketbuilder.h"
|
|
#include "rtpsessionsources.h"
|
|
#include "rtptransmitter.h"
|
|
#include "rtpcollisionlist.h"
|
|
#include "rtcpscheduler.h"
|
|
#include "rtcppacketbuilder.h"
|
|
#include "rtptimeutilities.h"
|
|
#include <list>
|
|
|
|
#include "export.h"
|
|
|
|
namespace qrtplib
|
|
{
|
|
|
|
class RTPTransmitter;
|
|
class RTPSessionParams;
|
|
class RTPTransmissionParams;
|
|
class RTPAddress;
|
|
class RTPSourceData;
|
|
class RTPPacket;
|
|
class RTPPollThread;
|
|
class RTPTransmissionInfo;
|
|
class RTCPCompoundPacket;
|
|
class RTCPPacket;
|
|
class RTCPAPPPacket;
|
|
|
|
/** High level class for using RTP.
|
|
* For most RTP based applications, the RTPSession class will probably be the one to use. It handles
|
|
* the RTCP part completely internally, so the user can focus on sending and receiving the actual data.
|
|
* In case you want to use SRTP, you should create an RTPSecureSession derived class.
|
|
* \note The RTPSession class is not meant to be thread safe. The user should use some kind of locking
|
|
* mechanism to prevent different threads from using the same RTPSession instance.
|
|
*/
|
|
class QRTPLIB_API RTPSession
|
|
{
|
|
public:
|
|
/** Constructs an RTPSession instance, optionally using a specific instance of a random
|
|
* number generator, and optionally installing a memory manager.
|
|
* Constructs an RTPSession instance, optionally using a specific instance of a random
|
|
* number generator, and optionally installing a memory manager. If no random number generator
|
|
* is specified, the RTPSession object will try to use either a RTPRandomURandom or
|
|
* RTPRandomRandS instance. If neither is available on the current platform, a RTPRandomRand48
|
|
* instance will be used instead. By specifying a random number generator yourself, it is
|
|
* possible to use the same generator in several RTPSession instances.
|
|
*/
|
|
RTPSession(RTPRandom *rnd = 0);
|
|
virtual ~RTPSession();
|
|
|
|
/** Creates an RTP session.
|
|
* This function creates an RTP session with parameters \c sessparams, which will use a transmitter
|
|
* corresponding to \c proto. Parameters for this transmitter can be specified as well. If \c
|
|
* proto is of type RTPTransmitter::UserDefinedProto, the NewUserDefinedTransmitter function must
|
|
* be implemented.
|
|
*/
|
|
//int Create(const RTPSessionParams &sessparams, const RTPTransmissionParams *transparams = 0, RTPTransmitter::TransmissionProtocol proto = RTPTransmitter::IPv4UDPProto);
|
|
|
|
/** Creates an RTP session using \c transmitter as transmission component.
|
|
* This function creates an RTP session with parameters \c sessparams, which will use the
|
|
* transmission component \c transmitter. Initialization and destruction of the transmitter
|
|
* will not be done by the RTPSession class if this Create function is used. This function
|
|
* can be useful if you which to reuse the transmission component in another RTPSession
|
|
* instance, once the original RTPSession isn't using the transmitter anymore.
|
|
*/
|
|
int Create(const RTPSessionParams &sessparams, RTPTransmitter *transmitter);
|
|
|
|
/** Leaves the session without sending a BYE packet. */
|
|
void Destroy();
|
|
|
|
/** Sends a BYE packet and leaves the session.
|
|
* Sends a BYE packet and leaves the session. At most a time \c maxwaittime will be waited to
|
|
* send the BYE packet. If this time expires, the session will be left without sending a BYE packet.
|
|
* The BYE packet will contain as reason for leaving \c reason with length \c reasonlength.
|
|
*/
|
|
void BYEDestroy(const RTPTime &maxwaittime, const void *reason, std::size_t reasonlength);
|
|
|
|
/** Returns whether the session has been created or not. */
|
|
bool IsActive();
|
|
|
|
/** Returns our own SSRC. */
|
|
uint32_t GetLocalSSRC();
|
|
|
|
/** Adds \c addr to the list of destinations. */
|
|
int AddDestination(const RTPAddress &addr);
|
|
|
|
/** Deletes \c addr from the list of destinations. */
|
|
int DeleteDestination(const RTPAddress &addr);
|
|
|
|
/** Clears the list of destinations. */
|
|
void ClearDestinations();
|
|
|
|
/** Returns \c true if multicasting is supported. */
|
|
bool SupportsMulticasting();
|
|
|
|
/** Joins the multicast group specified by \c addr. */
|
|
int JoinMulticastGroup(const RTPAddress &addr);
|
|
|
|
/** Leaves the multicast group specified by \c addr. */
|
|
int LeaveMulticastGroup(const RTPAddress &addr);
|
|
|
|
/** Sends the RTP packet with payload \c data which has length \c len.
|
|
* Sends the RTP packet with payload \c data which has length \c len.
|
|
* The used payload type, marker and timestamp increment will be those that have been set
|
|
* using the \c SetDefault member functions.
|
|
*/
|
|
int SendPacket(const void *data, std::size_t len);
|
|
|
|
/** Sends the RTP packet with payload \c data which has length \c len.
|
|
* It will use payload type \c pt, marker \c mark and after the packet has been built, the
|
|
* timestamp will be incremented by \c timestampinc.
|
|
*/
|
|
int SendPacket(const void *data, std::size_t len, uint8_t pt, bool mark, uint32_t timestampinc);
|
|
|
|
/** Sends the RTP packet with payload \c data which has length \c len.
|
|
* The packet will contain a header extension with identifier \c hdrextID and containing data
|
|
* \c hdrextdata. The length of this data is given by \c numhdrextwords and is specified in a
|
|
* number of 32-bit words. The used payload type, marker and timestamp increment will be those that
|
|
* have been set using the \c SetDefault member functions.
|
|
*/
|
|
int SendPacketEx(const void *data, std::size_t len, uint16_t hdrextID, const void *hdrextdata, std::size_t numhdrextwords);
|
|
|
|
/** Sends the RTP packet with payload \c data which has length \c len.
|
|
* It will use payload type \c pt, marker \c mark and after the packet has been built, the
|
|
* timestamp will be incremented by \c timestampinc. The packet will contain a header
|
|
* extension with identifier \c hdrextID and containing data \c hdrextdata. The length
|
|
* of this data is given by \c numhdrextwords and is specified in a number of 32-bit words.
|
|
*/
|
|
int SendPacketEx(const void *data, std::size_t len, uint8_t pt, bool mark, uint32_t timestampinc, uint16_t hdrextID, const void *hdrextdata, std::size_t numhdrextwords);
|
|
#ifdef RTP_SUPPORT_SENDAPP
|
|
/** If sending of RTCP APP packets was enabled at compile time, this function creates a compound packet
|
|
* containing an RTCP APP packet and sends it immediately.
|
|
* If sending of RTCP APP packets was enabled at compile time, this function creates a compound packet
|
|
* containing an RTCP APP packet and sends it immediately. If successful, the function returns the number
|
|
* of bytes in the RTCP compound packet. Note that this immediate sending is not compliant with the RTP
|
|
* specification, so use with care.
|
|
*/
|
|
int SendRTCPAPPPacket(uint8_t subtype, const uint8_t name[4], const void *appdata, std::size_t appdatalen);
|
|
#endif // RTP_SUPPORT_SENDAPP
|
|
|
|
/** With this function raw data can be sent directly over the RTP or
|
|
* RTCP channel (if they are different); the data is **not** passed through the
|
|
* RTPSession::OnChangeRTPOrRTCPData function. */
|
|
int SendRawData(const void *data, std::size_t len, bool usertpchannel);
|
|
|
|
/** Sets the default payload type for RTP packets to \c pt. */
|
|
int SetDefaultPayloadType(uint8_t pt);
|
|
|
|
/** Sets the default marker for RTP packets to \c m. */
|
|
int SetDefaultMark(bool m);
|
|
|
|
/** Sets the default value to increment the timestamp with to \c timestampinc. */
|
|
int SetDefaultTimestampIncrement(uint32_t timestampinc);
|
|
|
|
/** This function increments the timestamp with the amount given by \c inc.
|
|
* This function increments the timestamp with the amount given by \c inc. This can be useful
|
|
* if, for example, a packet was not sent because it contained only silence. Then, this function
|
|
* should be called to increment the timestamp with the appropriate amount so that the next packets
|
|
* will still be played at the correct time at other hosts.
|
|
*/
|
|
int IncrementTimestamp(uint32_t inc);
|
|
|
|
/** This function increments the timestamp with the amount given set by the SetDefaultTimestampIncrement
|
|
* member function.
|
|
* This function increments the timestamp with the amount given set by the SetDefaultTimestampIncrement
|
|
* member function. This can be useful if, for example, a packet was not sent because it contained only silence.
|
|
* Then, this function should be called to increment the timestamp with the appropriate amount so that the next
|
|
* packets will still be played at the correct time at other hosts.
|
|
*/
|
|
int IncrementTimestampDefault();
|
|
|
|
/** This function allows you to inform the library about the delay between sampling the first
|
|
* sample of a packet and sending the packet.
|
|
* This function allows you to inform the library about the delay between sampling the first
|
|
* sample of a packet and sending the packet. This delay is taken into account when calculating the
|
|
* relation between RTP timestamp and wallclock time, used for inter-media synchronization.
|
|
*/
|
|
int SetPreTransmissionDelay(const RTPTime &delay);
|
|
|
|
/** This function returns an instance of a subclass of RTPTransmissionInfo which will give some
|
|
* additional information about the transmitter (a list of local IP addresses for example).
|
|
* This function returns an instance of a subclass of RTPTransmissionInfo which will give some
|
|
* additional information about the transmitter (a list of local IP addresses for example). The user
|
|
* has to free the returned instance when it is no longer needed, preferably using the DeleteTransmissionInfo
|
|
* function.
|
|
*/
|
|
RTPTransmissionInfo *GetTransmissionInfo();
|
|
|
|
/** Frees the memory used by the transmission information \c inf. */
|
|
void DeleteTransmissionInfo(RTPTransmissionInfo *inf);
|
|
|
|
/** Returns the time interval after which an RTCP compound packet may have to be sent (only works when
|
|
* you're not using the poll thread.
|
|
*/
|
|
RTPTime GetRTCPDelay();
|
|
|
|
/** The following member functions (till EndDataAccess}) need to be accessed between a call
|
|
* to BeginDataAccess and EndDataAccess.
|
|
* The BeginDataAccess function makes sure that the poll thread won't access the source table
|
|
* at the same time that you're using it. When the EndDataAccess is called, the lock on the
|
|
* source table is freed again.
|
|
*/
|
|
int BeginDataAccess();
|
|
|
|
/** Starts the iteration over the participants by going to the first member in the table.
|
|
* Starts the iteration over the participants by going to the first member in the table.
|
|
* If a member was found, the function returns \c true, otherwise it returns \c false.
|
|
*/
|
|
bool GotoFirstSource();
|
|
|
|
/** Sets the current source to be the next source in the table.
|
|
* Sets the current source to be the next source in the table. If we're already at the last
|
|
* source, the function returns \c false, otherwise it returns \c true.
|
|
*/
|
|
bool GotoNextSource();
|
|
|
|
/** Sets the current source to be the previous source in the table.
|
|
* Sets the current source to be the previous source in the table. If we're at the first source,
|
|
* the function returns \c false, otherwise it returns \c true.
|
|
*/
|
|
bool GotoPreviousSource();
|
|
|
|
/** Sets the current source to be the first source in the table which has RTPPacket instances
|
|
* that we haven't extracted yet.
|
|
* Sets the current source to be the first source in the table which has RTPPacket instances
|
|
* that we haven't extracted yet. If no such member was found, the function returns \c false,
|
|
* otherwise it returns \c true.
|
|
*/
|
|
bool GotoFirstSourceWithData();
|
|
|
|
/** Sets the current source to be the next source in the table which has RTPPacket instances
|
|
* that we haven't extracted yet.
|
|
* Sets the current source to be the next source in the table which has RTPPacket instances
|
|
* that we haven't extracted yet. If no such member was found, the function returns \c false,
|
|
* otherwise it returns \c true.
|
|
*/
|
|
bool GotoNextSourceWithData();
|
|
|
|
/** Sets the current source to be the previous source in the table which has RTPPacket
|
|
* instances that we haven't extracted yet.
|
|
* Sets the current source to be the previous source in the table which has RTPPacket
|
|
* instances that we haven't extracted yet. If no such member was found, the function returns \c false,
|
|
* otherwise it returns \c true.
|
|
*/
|
|
bool GotoPreviousSourceWithData();
|
|
|
|
/** Returns the \c RTPSourceData instance for the currently selected participant. */
|
|
RTPSourceData *GetCurrentSourceInfo();
|
|
|
|
/** Returns the \c RTPSourceData instance for the participant identified by \c ssrc,
|
|
* or NULL if no such entry exists.
|
|
*/
|
|
RTPSourceData *GetSourceInfo(uint32_t ssrc);
|
|
|
|
/** Extracts the next packet from the received packets queue of the current participant,
|
|
* or NULL if no more packets are available.
|
|
* Extracts the next packet from the received packets queue of the current participant,
|
|
* or NULL if no more packets are available. When the packet is no longer needed, its
|
|
* memory should be freed using the DeletePacket member function.
|
|
*/
|
|
RTPPacket *GetNextPacket();
|
|
|
|
/** Returns the Sequence Number that will be used in the next SendPacket function call. */
|
|
uint16_t GetNextSequenceNumber() const;
|
|
|
|
/** Frees the memory used by \c p. */
|
|
void DeletePacket(RTPPacket *p);
|
|
|
|
/** See BeginDataAccess. */
|
|
int EndDataAccess();
|
|
|
|
/** Sets the receive mode to \c m.
|
|
* Sets the receive mode to \c m. Note that when the receive mode is changed, the list of
|
|
* addresses to be ignored ot accepted will be cleared.
|
|
*/
|
|
int SetReceiveMode(RTPTransmitter::ReceiveMode m);
|
|
|
|
/** Adds \c addr to the list of addresses to ignore. */
|
|
int AddToIgnoreList(const RTPAddress &addr);
|
|
|
|
/** Deletes \c addr from the list of addresses to ignore. */
|
|
int DeleteFromIgnoreList(const RTPAddress &addr);
|
|
|
|
/** Clears the list of addresses to ignore. */
|
|
void ClearIgnoreList();
|
|
|
|
/** Adds \c addr to the list of addresses to accept. */
|
|
int AddToAcceptList(const RTPAddress &addr);
|
|
|
|
/** Deletes \c addr from the list of addresses to accept. */
|
|
int DeleteFromAcceptList(const RTPAddress &addr);
|
|
|
|
/** Clears the list of addresses to accept. */
|
|
void ClearAcceptList();
|
|
|
|
/** Sets the maximum allowed packet size to \c s. */
|
|
int SetMaximumPacketSize(std::size_t s);
|
|
|
|
/** Sets the session bandwidth to \c bw, which is specified in bytes per second. */
|
|
int SetSessionBandwidth(double bw);
|
|
|
|
/** Sets the timestamp unit for our own data.
|
|
* Sets the timestamp unit for our own data. The timestamp unit is defined as a time interval in
|
|
* seconds divided by the corresponding timestamp interval. For example, for 8000 Hz audio, the
|
|
* timestamp unit would typically be 1/8000. Since this value is initially set to an illegal value,
|
|
* the user must set this to an allowed value to be able to create a session.
|
|
*/
|
|
int SetTimestampUnit(double u);
|
|
|
|
/** Sets the RTCP interval for the SDES name item.
|
|
* After all possible sources in the source table have been processed, the class will check if other
|
|
* SDES items need to be sent. If \c count is zero or negative, nothing will happen. If \c count
|
|
* is positive, an SDES name item will be added after the sources in the source table have been
|
|
* processed \c count times.
|
|
*/
|
|
void SetNameInterval(int count);
|
|
|
|
/** Sets the RTCP interval for the SDES e-mail item.
|
|
* After all possible sources in the source table have been processed, the class will check if other
|
|
* SDES items need to be sent. If \c count is zero or negative, nothing will happen. If \c count
|
|
* is positive, an SDES e-mail item will be added after the sources in the source table have been
|
|
* processed \c count times.
|
|
*/
|
|
void SetEMailInterval(int count);
|
|
|
|
/** Sets the RTCP interval for the SDES location item.
|
|
* After all possible sources in the source table have been processed, the class will check if other
|
|
* SDES items need to be sent. If \c count is zero or negative, nothing will happen. If \c count
|
|
* is positive, an SDES location item will be added after the sources in the source table have been
|
|
* processed \c count times.
|
|
*/
|
|
void SetLocationInterval(int count);
|
|
|
|
/** Sets the RTCP interval for the SDES phone item.
|
|
* After all possible sources in the source table have been processed, the class will check if other
|
|
* SDES items need to be sent. If \c count is zero or negative, nothing will happen. If \c count
|
|
* is positive, an SDES phone item will be added after the sources in the source table have been
|
|
* processed \c count times.
|
|
*/
|
|
void SetPhoneInterval(int count);
|
|
|
|
/** Sets the RTCP interval for the SDES tool item.
|
|
* After all possible sources in the source table have been processed, the class will check if other
|
|
* SDES items need to be sent. If \c count is zero or negative, nothing will happen. If \c count
|
|
* is positive, an SDES tool item will be added after the sources in the source table have been
|
|
* processed \c count times.
|
|
*/
|
|
void SetToolInterval(int count);
|
|
|
|
/** Sets the RTCP interval for the SDES note item.
|
|
* After all possible sources in the source table have been processed, the class will check if other
|
|
* SDES items need to be sent. If \c count is zero or negative, nothing will happen. If \c count
|
|
* is positive, an SDES note item will be added after the sources in the source table have been
|
|
* processed \c count times.
|
|
*/
|
|
void SetNoteInterval(int count);
|
|
|
|
/** Sets the SDES name item for the local participant to the value \c s with length \c len. */
|
|
int SetLocalName(const void *s, std::size_t len);
|
|
|
|
/** Sets the SDES e-mail item for the local participant to the value \c s with length \c len. */
|
|
int SetLocalEMail(const void *s, std::size_t len);
|
|
|
|
/** Sets the SDES location item for the local participant to the value \c s with length \c len. */
|
|
int SetLocalLocation(const void *s, std::size_t len);
|
|
|
|
/** Sets the SDES phone item for the local participant to the value \c s with length \c len. */
|
|
int SetLocalPhone(const void *s, std::size_t len);
|
|
|
|
/** Sets the SDES tool item for the local participant to the value \c s with length \c len. */
|
|
int SetLocalTool(const void *s, std::size_t len);
|
|
|
|
/** Sets the SDES note item for the local participant to the value \c s with length \c len. */
|
|
int SetLocalNote(const void *s, std::size_t len);
|
|
|
|
protected:
|
|
/** Allocate a user defined transmitter.
|
|
* In case you specified in the Create function that you want to use a
|
|
* user defined transmitter, you should override this function. The RTPTransmitter
|
|
* instance returned by this function will then be used to send and receive RTP and
|
|
* RTCP packets. Note that when the session is destroyed, this RTPTransmitter
|
|
* instance will be destroyed as well.
|
|
*/
|
|
virtual RTPTransmitter *NewUserDefinedTransmitter();
|
|
|
|
/** Is called when an incoming RTP packet is about to be processed.
|
|
* Is called when an incoming RTP packet is about to be processed. This is _not_
|
|
* a good function to process an RTP packet in, in case you want to avoid iterating
|
|
* over the sources using the GotoFirst/GotoNext functions. In that case, the
|
|
* RTPSession::OnValidatedRTPPacket function should be used.
|
|
*/
|
|
virtual void OnRTPPacket(RTPPacket *pack, const RTPTime &receivetime, const RTPAddress *senderaddress);
|
|
|
|
/** Is called when an incoming RTCP packet is about to be processed. */
|
|
virtual void OnRTCPCompoundPacket(RTCPCompoundPacket *pack, const RTPTime &receivetime, const RTPAddress *senderaddress);
|
|
|
|
/** Is called when an SSRC collision was detected.
|
|
* Is called when an SSRC collision was detected. The instance \c srcdat is the one present in
|
|
* the table, the address \c senderaddress is the one that collided with one of the addresses
|
|
* and \c isrtp indicates against which address of \c srcdat the check failed.
|
|
*/
|
|
virtual void OnSSRCCollision(RTPSourceData *srcdat, const RTPAddress *senderaddress, bool isrtp);
|
|
|
|
/** Is called when another CNAME was received than the one already present for source \c srcdat. */
|
|
virtual void OnCNAMECollision(RTPSourceData *srcdat, const RTPAddress *senderaddress, const uint8_t *cname, std::size_t cnamelength);
|
|
|
|
/** Is called when a new entry \c srcdat is added to the source table. */
|
|
virtual void OnNewSource(RTPSourceData *srcdat);
|
|
|
|
/** Is called when the entry \c srcdat is about to be deleted from the source table. */
|
|
virtual void OnRemoveSource(RTPSourceData *srcdat);
|
|
|
|
/** Is called when participant \c srcdat is timed out. */
|
|
virtual void OnTimeout(RTPSourceData *srcdat);
|
|
|
|
/** Is called when participant \c srcdat is timed after having sent a BYE packet. */
|
|
virtual void OnBYETimeout(RTPSourceData *srcdat);
|
|
|
|
/** Is called when an RTCP APP packet \c apppacket has been received at time \c receivetime
|
|
* from address \c senderaddress.
|
|
*/
|
|
virtual void OnAPPPacket(RTCPAPPPacket *apppacket, const RTPTime &receivetime, const RTPAddress *senderaddress);
|
|
|
|
/** Is called when an unknown RTCP packet type was detected. */
|
|
virtual void OnUnknownPacketType(RTCPPacket *rtcppack, const RTPTime &receivetime, const RTPAddress *senderaddress);
|
|
|
|
/** Is called when an unknown packet format for a known packet type was detected. */
|
|
virtual void OnUnknownPacketFormat(RTCPPacket *rtcppack, const RTPTime &receivetime, const RTPAddress *senderaddress);
|
|
|
|
/** Is called when the SDES NOTE item for source \c srcdat has been timed out. */
|
|
virtual void OnNoteTimeout(RTPSourceData *srcdat);
|
|
|
|
/** Is called when an RTCP sender report has been processed for this source. */
|
|
virtual void OnRTCPSenderReport(RTPSourceData *srcdat);
|
|
|
|
/** Is called when an RTCP receiver report has been processed for this source. */
|
|
virtual void OnRTCPReceiverReport(RTPSourceData *srcdat);
|
|
|
|
/** Is called when a specific SDES item was received for this source. */
|
|
virtual void OnRTCPSDESItem(RTPSourceData *srcdat, RTCPSDESPacket::ItemType t, const void *itemdata, std::size_t itemlength);
|
|
#ifdef RTP_SUPPORT_SDESPRIV
|
|
/** Is called when a specific SDES item of 'private' type was received for this source. */
|
|
virtual void OnRTCPSDESPrivateItem(RTPSourceData *srcdat, const void *prefixdata, std::size_t prefixlen, const void *valuedata, std::size_t valuelen);
|
|
#endif // RTP_SUPPORT_SDESPRIV
|
|
|
|
/** Is called when a BYE packet has been processed for source \c srcdat. */
|
|
virtual void OnBYEPacket(RTPSourceData *srcdat);
|
|
|
|
/** Is called when an RTCP compound packet has just been sent (useful to inspect outgoing RTCP data). */
|
|
virtual void OnSendRTCPCompoundPacket(RTCPCompoundPacket *pack);
|
|
|
|
/** If this is set to true, outgoing data will be passed through RTPSession::OnChangeRTPOrRTCPData
|
|
* and RTPSession::OnSentRTPOrRTCPData, allowing you to modify the data (e.g. to encrypt it). */
|
|
void SetChangeOutgoingData(bool change)
|
|
{
|
|
m_changeOutgoingData = change;
|
|
}
|
|
|
|
/** If this is set to true, incoming data will be passed through RTPSession::OnChangeIncomingData,
|
|
* allowing you to modify the data (e.g. to decrypt it). */
|
|
void SetChangeIncomingData(bool change)
|
|
{
|
|
m_changeIncomingData = change;
|
|
}
|
|
|
|
/** If RTPSession::SetChangeOutgoingData was sent to true, overriding this you can change the
|
|
* data packet that will actually be sent, for example adding encryption.
|
|
* If RTPSession::SetChangeOutgoingData was sent to true, overriding this you can change the
|
|
* data packet that will actually be sent, for example adding encryption.
|
|
* Note that no memory management will be performed on the `senddata` pointer you fill in,
|
|
* so if it needs to be deleted at some point you need to take care of this in some way
|
|
* yourself, a good way may be to do this in RTPSession::OnSentRTPOrRTCPData. If `senddata` is
|
|
* set to 0, no packet will be sent out. This also provides a way to turn off sending RTCP
|
|
* packets if desired. */
|
|
virtual int OnChangeRTPOrRTCPData(const void *origdata, std::size_t origlen, bool isrtp, void **senddata, std::size_t *sendlen);
|
|
|
|
/** This function is called when an RTP or RTCP packet was sent, it can be helpful
|
|
* when data was allocated in RTPSession::OnChangeRTPOrRTCPData to deallocate it
|
|
* here. */
|
|
virtual void OnSentRTPOrRTCPData(void *senddata, std::size_t sendlen, bool isrtp);
|
|
|
|
/** By overriding this function, the raw incoming data can be inspected
|
|
* and modified (e.g. for encryption).
|
|
* By overriding this function, the raw incoming data can be inspected
|
|
* and modified (e.g. for encryption). If the function returns `false`,
|
|
* the packet is discarded.
|
|
*/
|
|
virtual bool OnChangeIncomingData(RTPRawPacket *rawpack);
|
|
|
|
/** Allows you to use an RTP packet from the specified source directly.
|
|
* Allows you to use an RTP packet from the specified source directly. If
|
|
* `ispackethandled` is set to `true`, the packet will no longer be stored in this
|
|
* source's packet list. Note that if you do set this flag, you'll need to
|
|
* deallocate the packet yourself at an appropriate time.
|
|
*
|
|
* The difference with RTPSession::OnRTPPacket is that that
|
|
* function will always process the RTP packet further and is therefore not
|
|
* really suited to actually do something with the data.
|
|
*/
|
|
virtual void OnValidatedRTPPacket(RTPSourceData *srcdat, RTPPacket *rtppack, bool isonprobation, bool *ispackethandled);
|
|
private:
|
|
int InternalCreate(const RTPSessionParams &sessparams);
|
|
int CreateCNAME(uint8_t *buffer, std::size_t *bufferlength, bool resolve);
|
|
int ProcessPolledData();
|
|
int ProcessRTCPCompoundPacket(RTCPCompoundPacket &rtcpcomppack, RTPRawPacket *pack);
|
|
RTPRandom *GetRandomNumberGenerator(RTPRandom *r);
|
|
int SendRTPData(const void *data, std::size_t len);
|
|
int SendRTCPData(const void *data, std::size_t len);
|
|
|
|
RTPRandom *rtprnd;
|
|
bool deletertprnd;
|
|
|
|
RTPTransmitter *rtptrans;
|
|
bool created;
|
|
bool deletetransmitter;
|
|
bool usingpollthread;
|
|
bool acceptownpackets;
|
|
bool useSR_BYEifpossible;
|
|
std::size_t maxpacksize;
|
|
double sessionbandwidth;
|
|
double controlfragment;
|
|
double sendermultiplier;
|
|
double byemultiplier;
|
|
double membermultiplier;
|
|
double collisionmultiplier;
|
|
double notemultiplier;
|
|
bool sentpackets;
|
|
|
|
bool m_changeIncomingData, m_changeOutgoingData;
|
|
|
|
RTPSessionSources sources;
|
|
RTPPacketBuilder packetbuilder;
|
|
RTCPScheduler rtcpsched;
|
|
RTCPPacketBuilder rtcpbuilder;
|
|
RTPCollisionList collisionlist;
|
|
|
|
std::list<RTCPCompoundPacket *> byepackets;
|
|
|
|
friend class RTPSessionSources;
|
|
friend class RTCPSessionPacketBuilder;
|
|
};
|
|
|
|
inline RTPTransmitter *RTPSession::NewUserDefinedTransmitter()
|
|
{
|
|
return 0;
|
|
}
|
|
inline void RTPSession::OnRTPPacket(RTPPacket *, const RTPTime &, const RTPAddress *)
|
|
{
|
|
}
|
|
inline void RTPSession::OnRTCPCompoundPacket(RTCPCompoundPacket *, const RTPTime &, const RTPAddress *)
|
|
{
|
|
}
|
|
inline void RTPSession::OnSSRCCollision(RTPSourceData *, const RTPAddress *, bool)
|
|
{
|
|
}
|
|
inline void RTPSession::OnCNAMECollision(RTPSourceData *, const RTPAddress *, const uint8_t *, std::size_t)
|
|
{
|
|
}
|
|
inline void RTPSession::OnNewSource(RTPSourceData *)
|
|
{
|
|
}
|
|
inline void RTPSession::OnRemoveSource(RTPSourceData *)
|
|
{
|
|
}
|
|
inline void RTPSession::OnTimeout(RTPSourceData *)
|
|
{
|
|
}
|
|
inline void RTPSession::OnBYETimeout(RTPSourceData *)
|
|
{
|
|
}
|
|
inline void RTPSession::OnAPPPacket(RTCPAPPPacket *, const RTPTime &, const RTPAddress *)
|
|
{
|
|
}
|
|
inline void RTPSession::OnUnknownPacketType(RTCPPacket *, const RTPTime &, const RTPAddress *)
|
|
{
|
|
}
|
|
inline void RTPSession::OnUnknownPacketFormat(RTCPPacket *, const RTPTime &, const RTPAddress *)
|
|
{
|
|
}
|
|
inline void RTPSession::OnNoteTimeout(RTPSourceData *)
|
|
{
|
|
}
|
|
inline void RTPSession::OnRTCPSenderReport(RTPSourceData *)
|
|
{
|
|
}
|
|
inline void RTPSession::OnRTCPReceiverReport(RTPSourceData *)
|
|
{
|
|
}
|
|
inline void RTPSession::OnRTCPSDESItem(RTPSourceData *, RTCPSDESPacket::ItemType, const void *, std::size_t)
|
|
{
|
|
}
|
|
|
|
#ifdef RTP_SUPPORT_SDESPRIV
|
|
inline void RTPSession::OnRTCPSDESPrivateItem(RTPSourceData *, const void *, std::size_t, const void *, std::size_t)
|
|
{
|
|
}
|
|
#endif // RTP_SUPPORT_SDESPRIV
|
|
|
|
inline void RTPSession::OnBYEPacket(RTPSourceData *)
|
|
{
|
|
}
|
|
inline void RTPSession::OnSendRTCPCompoundPacket(RTCPCompoundPacket *)
|
|
{
|
|
}
|
|
|
|
inline int RTPSession::OnChangeRTPOrRTCPData(const void *, std::size_t, bool, void **, std::size_t *)
|
|
{
|
|
return ERR_RTP_RTPSESSION_CHANGEREQUESTEDBUTNOTIMPLEMENTED;
|
|
}
|
|
inline void RTPSession::OnSentRTPOrRTCPData(void *, std::size_t, bool)
|
|
{
|
|
}
|
|
inline bool RTPSession::OnChangeIncomingData(RTPRawPacket *)
|
|
{
|
|
return true;
|
|
}
|
|
inline void RTPSession::OnValidatedRTPPacket(RTPSourceData *, RTPPacket *, bool, bool *)
|
|
{
|
|
}
|
|
|
|
} // end namespace
|
|
|
|
#endif // RTPSESSION_H
|
|
|