qrtplib: draft (2)

qrtplib/CMakeLists.txt

@@ -1,22 +1,25 @@
 project(qrtplib)
 
 set(qrtplib_SOURCES
-	rtptimeutilities.cpp
-	rtprandomurandom.cpp
-	rtprandomrand48.cpp
-	rtprandom.cpp
 	rtperrors.cpp
+	rtppacket.cpp
+	rtprandom.cpp
+	rtprandomrand48.cpp
+	rtprandomurandom.cpp
+	rtptimeutilities.cpp
 )
 
 set(qrtplib_HEADERS
-	rtptimeutilities.h
-	rtprandom.h
-	rtprandomurandom.h
-	rtprandomrand48.h
-	rtprandom.h
-	rtpinternalutils.h
 	rtperrors.h
 	rtpdefines.h
+	rtpinternalutils.h
+	rtppacket.h
+	rtprandom.h
+	rtprandomrand48.h
+	rtprandomurandom.h
+	rtprawpacket.h
+	rtpstructs.h
+	rtptimeutilities.h
 )
 
 include_directories(

qrtplib/rtppacket.cpp

@@ -0,0 +1,441 @@
+/*
+  Rewritten to fit into the Qt Network framework
+  Copyright (c) 2018 Edouard Griffiths, F4EXB
+
+  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.
+
+*/
+
+#include "rtppacket.h"
+#include "rtpstructs.h"
+#include "rtpdefines.h"
+#include "rtperrors.h"
+#include "rtprawpacket.h"
+#include <string.h>
+
+#ifdef RTPDEBUG
+	#include <stdio.h>
+#endif // RTPDEBUG
+
+//#include "rtpdebug.h"
+
+namespace qrtplib
+{
+
+void RTPPacket::Clear()
+{
+	hasextension = false;
+	hasmarker = false;
+	numcsrcs = 0;
+	payloadtype = 0;
+	extseqnr = 0;
+	timestamp = 0;
+	ssrc = 0;
+	packet = 0;
+	payload = 0;
+	packetlength = 0;
+	payloadlength = 0;
+	extid = 0;
+	extension = 0;
+	extensionlength = 0;
+	error = 0;
+	externalbuffer = false;
+
+    uint32_t endianTest32 = 1;
+    uint8_t *ptr = (uint8_t*) &endianTest32;
+    m_littleEndian = (*ptr == 1);
+}
+
+RTPPacket::RTPPacket(RTPRawPacket &rawpack) : receivetime(rawpack.GetReceiveTime())
+{
+	Clear();
+	error = ParseRawPacket(rawpack);
+}
+
+RTPPacket::RTPPacket(
+        uint8_t payloadtype,
+        const void *payloaddata,
+        std::size_t payloadlen,
+        uint16_t seqnr,
+        uint32_t timestamp,
+        uint32_t ssrc,
+        bool gotmarker,
+        uint8_t numcsrcs,
+        const uint32_t *csrcs,
+        bool gotextension,
+        uint16_t extensionid,
+        uint16_t extensionlen_numwords,
+        const void *extensiondata,
+        std::size_t maxpacksize) : receivetime(0,0)
+{
+	Clear();
+
+	error = BuildPacket(
+	        payloadtype,
+	        payloaddata,
+	        payloadlen,
+	        seqnr,
+	        timestamp,
+	        ssrc,
+	        gotmarker,
+	        numcsrcs,
+	        csrcs,
+	        gotextension,
+	        extensionid,
+	        extensionlen_numwords,
+	        extensiondata,
+	        0,
+	        maxpacksize);
+}
+
+RTPPacket::RTPPacket(
+        uint8_t payloadtype,
+        const void *payloaddata,
+        std::size_t payloadlen,
+        uint16_t seqnr,
+        uint32_t timestamp,
+        uint32_t ssrc,
+        bool gotmarker,
+        uint8_t numcsrcs,
+        const uint32_t *csrcs,
+        bool gotextension,
+        uint16_t extensionid,
+        uint16_t extensionlen_numwords,
+        const void *extensiondata,
+        void *buffer,
+        std::size_t buffersize) : receivetime(0,0)
+{
+	Clear();
+
+	if (buffer == 0) {
+		error = ERR_RTP_PACKET_EXTERNALBUFFERNULL;
+	} else if (buffersize <= 0) {
+		error = ERR_RTP_PACKET_ILLEGALBUFFERSIZE;
+	} else {
+		error = BuildPacket(
+		        payloadtype,
+		        payloaddata,
+		        payloadlen,
+		        seqnr,
+		        timestamp,
+		        ssrc,
+		        gotmarker,
+		        numcsrcs,
+		        csrcs,
+		        gotextension,
+		        extensionid,
+		        extensionlen_numwords,
+		        extensiondata,
+		        buffer,
+		        buffersize);
+	}
+}
+
+int RTPPacket::ParseRawPacket(RTPRawPacket &rawpack)
+{
+	uint8_t *packetbytes;
+	std::size_t packetlen;
+	uint8_t payloadtype;
+	RTPHeader *rtpheader;
+	bool marker;
+	int csrccount;
+	bool hasextension;
+	int payloadoffset,payloadlength;
+	int numpadbytes;
+	RTPExtensionHeader *rtpextheader;
+
+	if (!rawpack.IsRTP()) { // If we didn't receive it on the RTP port, we'll ignore it
+		return ERR_RTP_PACKET_INVALIDPACKET;
+	}
+
+	// The length should be at least the size of the RTP header
+	packetlen = rawpack.GetDataLength();
+
+	if (packetlen < sizeof(RTPHeader)) {
+		return ERR_RTP_PACKET_INVALIDPACKET;
+	}
+
+	packetbytes = (uint8_t *)rawpack.GetData();
+	rtpheader = (RTPHeader *)packetbytes;
+
+	// The version number should be correct
+	if (rtpheader->version != RTP_VERSION) {
+		return ERR_RTP_PACKET_INVALIDPACKET;
+	}
+
+	// We'll check if this is possibly a RTCP packet. For this to be possible
+	// the marker bit and payload type combined should be either an SR or RR
+	// identifier
+	marker = (rtpheader->marker == 0)?false:true;
+	payloadtype = rtpheader->payloadtype;
+
+	if (marker)
+	{
+		if (payloadtype == (RTP_RTCPTYPE_SR & 127)) { // don't check high bit (this was the marker!!)
+			return ERR_RTP_PACKET_INVALIDPACKET;
+		}
+		if (payloadtype == (RTP_RTCPTYPE_RR & 127)) {
+			return ERR_RTP_PACKET_INVALIDPACKET;
+		}
+	}
+
+	csrccount = rtpheader->csrccount;
+	payloadoffset = sizeof(RTPHeader)+(int)(csrccount*sizeof(uint32_t));
+
+	if (rtpheader->padding) // adjust payload length to take padding into account
+	{
+		numpadbytes = (int)packetbytes[packetlen-1]; // last byte contains number of padding bytes
+		if (numpadbytes <= 0) {
+			return ERR_RTP_PACKET_INVALIDPACKET;
+		}
+	}
+	else
+	{
+		numpadbytes = 0;
+	}
+
+	hasextension = (rtpheader->extension != 0);
+
+	if (hasextension) // got header extension
+	{
+		rtpextheader = (RTPExtensionHeader *)(packetbytes+payloadoffset);
+		payloadoffset += sizeof(RTPExtensionHeader);
+
+		uint16_t exthdrlen = qToHost(rtpextheader->length); // ntohs(rtpextheader->length);
+		payloadoffset += ((int)exthdrlen)*sizeof(uint32_t);
+	}
+	else
+	{
+		rtpextheader = 0;
+	}
+
+	payloadlength = packetlen-numpadbytes-payloadoffset;
+
+	if (payloadlength < 0) {
+		return ERR_RTP_PACKET_INVALIDPACKET;
+	}
+
+	// Now, we've got a valid packet, so we can create a new instance of RTPPacket
+	// and fill in the members
+
+	RTPPacket::hasextension = hasextension;
+
+	if (hasextension)
+	{
+		RTPPacket::extid = qToHost(rtpextheader->extid); // ntohs(rtpextheader->extid);
+		RTPPacket::extensionlength = ((int)qToHost(rtpextheader->length))*sizeof(uint32_t); // ((int)ntohs(rtpextheader->length))*sizeof(uint32_t);
+		RTPPacket::extension = ((uint8_t *)rtpextheader)+sizeof(RTPExtensionHeader);
+	}
+
+	RTPPacket::hasmarker = marker;
+	RTPPacket::numcsrcs = csrccount;
+	RTPPacket::payloadtype = payloadtype;
+
+	// Note: we don't fill in the EXTENDED sequence number here, since we
+	// don't have information about the source here. We just fill in the low
+	// 16 bits
+	RTPPacket::extseqnr = (uint32_t) qToHost(rtpheader->sequencenumber); // ntohs(rtpheader->sequencenumber);
+
+	RTPPacket::timestamp = qToHost(rtpheader->timestamp); // ntohl(rtpheader->timestamp);
+	RTPPacket::ssrc = qToHost(rtpheader->ssrc); // ntohl(rtpheader->ssrc);
+	RTPPacket::packet = packetbytes;
+	RTPPacket::payload = packetbytes+payloadoffset;
+	RTPPacket::packetlength = packetlen;
+	RTPPacket::payloadlength = payloadlength;
+
+	// We'll zero the data of the raw packet, since we're using it here now!
+	rawpack.ZeroData();
+
+	return 0;
+}
+
+uint32_t RTPPacket::GetCSRC(int num) const
+{
+	if (num >= numcsrcs) {
+		return 0;
+	}
+
+	uint8_t *csrcpos;
+	uint32_t *csrcval_nbo;
+	uint32_t csrcval_hbo;
+
+	csrcpos = packet+sizeof(RTPHeader)+num*sizeof(uint32_t);
+	csrcval_nbo = (uint32_t *)csrcpos;
+	csrcval_hbo = qToHost(*csrcval_nbo); // ntohl(*csrcval_nbo);
+	return csrcval_hbo;
+}
+
+int RTPPacket::BuildPacket(
+        uint8_t payloadtype,
+        const void *payloaddata,
+        std::size_t payloadlen,
+        uint16_t seqnr,
+        uint32_t timestamp,
+        uint32_t ssrc,
+        bool gotmarker,
+        uint8_t numcsrcs,
+        const uint32_t *csrcs,
+        bool gotextension,
+        uint16_t extensionid,
+        uint16_t extensionlen_numwords,
+        const void *extensiondata,
+        void *buffer,
+        std::size_t maxsize)
+{
+	if (numcsrcs > RTP_MAXCSRCS) {
+		return ERR_RTP_PACKET_TOOMANYCSRCS;
+	}
+
+	if (payloadtype > 127) { // high bit should not be used
+		return ERR_RTP_PACKET_BADPAYLOADTYPE;
+	}
+	if (payloadtype == 72 || payloadtype == 73) { // could cause confusion with rtcp types
+		return ERR_RTP_PACKET_BADPAYLOADTYPE;
+	}
+
+	packetlength = sizeof(RTPHeader);
+	packetlength += sizeof(uint32_t)*((std::size_t)numcsrcs);
+
+	if (gotextension)
+	{
+		packetlength += sizeof(RTPExtensionHeader);
+		packetlength += sizeof(uint32_t)*((size_t)extensionlen_numwords);
+	}
+
+	packetlength += payloadlen;
+
+	if (maxsize > 0 && packetlength > maxsize)
+	{
+		packetlength = 0;
+		return ERR_RTP_PACKET_DATAEXCEEDSMAXSIZE;
+	}
+
+	// Ok, now we'll just fill in...
+
+	RTPHeader *rtphdr;
+
+	if (buffer == 0)
+	{
+		packet = new uint8_t[packetlength];
+		if (packet == 0)
+		{
+			packetlength = 0;
+			return ERR_RTP_OUTOFMEM;
+		}
+		externalbuffer = false;
+	}
+	else
+	{
+		packet = (uint8_t *)buffer;
+		externalbuffer = true;
+	}
+
+	RTPPacket::hasmarker = gotmarker;
+	RTPPacket::hasextension = gotextension;
+	RTPPacket::numcsrcs = numcsrcs;
+	RTPPacket::payloadtype = payloadtype;
+	RTPPacket::extseqnr = (uint32_t)seqnr;
+	RTPPacket::timestamp = timestamp;
+	RTPPacket::ssrc = ssrc;
+	RTPPacket::payloadlength = payloadlen;
+	RTPPacket::extid = extensionid;
+	RTPPacket::extensionlength = ((std::size_t)extensionlen_numwords)*sizeof(uint32_t);
+
+	rtphdr = (RTPHeader *)packet;
+	rtphdr->version = RTP_VERSION;
+	rtphdr->padding = 0;
+	if (gotmarker)
+		rtphdr->marker = 1;
+	else
+		rtphdr->marker = 0;
+	if (gotextension)
+		rtphdr->extension = 1;
+	else
+		rtphdr->extension = 0;
+	rtphdr->csrccount = numcsrcs;
+	rtphdr->payloadtype = payloadtype&127; // make sure high bit isn't set
+	rtphdr->sequencenumber = qToBigEndian(seqnr); // htons(seqnr);
+	rtphdr->timestamp = qToBigEndian(timestamp); // htonl(timestamp);
+	rtphdr->ssrc = qToBigEndian(ssrc); // htonl(ssrc);
+
+	uint32_t *curcsrc;
+	int i;
+	curcsrc = (uint32_t *)(packet+sizeof(RTPHeader));
+
+	for (i = 0 ; i < numcsrcs ; i++,curcsrc++) {
+		*curcsrc = qToBigEndian(csrcs[i]); // htonl(csrcs[i]);
+	}
+
+	payload = packet+sizeof(RTPHeader)+((std::size_t)numcsrcs)*sizeof(uint32_t);
+
+	if (gotextension)
+	{
+		RTPExtensionHeader *rtpexthdr = (RTPExtensionHeader *)payload;
+
+		rtpexthdr->extid = qToBigEndian(extensionid); // htons(extensionid);
+		rtpexthdr->length = qToBigEndian((uint16_t)extensionlen_numwords); // htons((uint16_t)extensionlen_numwords);
+
+		payload += sizeof(RTPExtensionHeader);
+		memcpy(payload,extensiondata,RTPPacket::extensionlength);
+
+		payload += RTPPacket::extensionlength;
+	}
+
+	memcpy(payload,payloaddata,payloadlen);
+	return 0;
+}
+
+#ifdef RTPDEBUG
+void RTPPacket::Dump()
+{
+	int i;
+
+	printf("Payload type:                %d\n",(int)GetPayloadType());
+	printf("Extended sequence number:    0x%08x\n",GetExtendedSequenceNumber());
+	printf("Timestamp:                   0x%08x\n",GetTimestamp());
+	printf("SSRC:                        0x%08x\n",GetSSRC());
+	printf("Marker:                      %s\n",HasMarker()?"yes":"no");
+	printf("CSRC count:                  %d\n",GetCSRCCount());
+	for (i = 0 ; i < GetCSRCCount() ; i++)
+		printf("    CSRC[%02d]:                0x%08x\n",i,GetCSRC(i));
+	printf("Payload:                     %s\n",GetPayloadData());
+	printf("Payload length:              %d\n",GetPayloadLength());
+	printf("Packet length:               %d\n",GetPacketLength());
+	printf("Extension:                   %s\n",HasExtension()?"yes":"no");
+	if (HasExtension())
+	{
+		printf("    Extension ID:            0x%04x\n",GetExtensionID());
+		printf("    Extension data:          %s\n",GetExtensionData());
+		printf("    Extension length:        %d\n",GetExtensionLength());
+	}
+}
+#endif // RTPDEBUG
+
+} // end namespace
+

qrtplib/rtppacket.h

@@ -0,0 +1,288 @@
+/*
+  Rewritten to fit into the Qt Network framework
+  Copyright (c) 2018 Edouard Griffiths, F4EXB
+
+  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 rtppacket.h
+ */
+
+#ifndef RTPPACKET_H
+
+#define RTPPACKET_H
+
+//#include "rtpconfig.h"
+//#include "rtptypes.h"
+#include "rtptimeutilities.h"
+//#include "rtpmemoryobject.h"
+#include <cstddef>
+#include <QtEndian>
+
+namespace qrtplib
+{
+
+class RTPRawPacket;
+
+/** Represents an RTP Packet.
+ *  The RTPPacket class can be used to parse a RTPRawPacket instance if it represents RTP data.
+ *  The class can also be used to create a new RTP packet according to the parameters specified by
+ *  the user.
+ */
+class RTPPacket
+{
+public:
+	/** Creates an RTPPacket instance based upon the data in \c rawpack.
+	 *  Creates an RTPPacket instance based upon the data in \c rawpack.
+	 *  If successful, the data is moved from the raw packet to the RTPPacket instance.
+	 */
+	RTPPacket(RTPRawPacket &rawpack);
+
+	/** Creates a new buffer for an RTP packet and fills in the fields according to the specified parameters.
+	 *  Creates a new buffer for an RTP packet and fills in the fields according to the specified parameters.
+	 *  If \c maxpacksize is not equal to zero, an error is generated if the total packet size would exceed
+	 *  \c maxpacksize. The arguments of the constructor are self-explanatory. Note that the size of a header
+	 *  extension is specified in a number of 32-bit words.
+	 */
+	RTPPacket(
+	        uint8_t payloadtype,
+	        const void *payloaddata,
+	        std::size_t payloadlen,
+	        uint16_t seqnr,
+	        uint32_t timestamp,
+	        uint32_t ssrc,
+	        bool gotmarker,
+	        uint8_t numcsrcs,
+	        const uint32_t *csrcs,
+	        bool gotextension,
+	        uint16_t extensionid,
+	        uint16_t extensionlen_numwords,
+	        const void *extensiondata,
+	        std::size_t maxpacksize);
+
+	/** This constructor is similar to the other constructor, but here data is stored in an external buffer
+	 *  \c buffer with size \c buffersize. */
+	RTPPacket(uint8_t payloadtype,
+	        const void *payloaddata,
+	        std::size_t payloadlen,
+	        uint16_t seqnr,
+	        uint32_t timestamp,
+	        uint32_t ssrc,
+	        bool gotmarker,
+	        uint8_t numcsrcs,
+	        const uint32_t *csrcs,
+	        bool gotextension,
+	        uint16_t extensionid,
+	        uint16_t extensionlen_numwords,
+	        const void *extensiondata,
+	        void *buffer,
+	        std::size_t buffersize);
+
+	virtual ~RTPPacket()
+	{
+	    if (packet && !externalbuffer){
+	        delete[] packet;
+	        //RTPDeleteByteArray(packet);
+	    }
+	}
+
+	/** If an error occurred in one of the constructors, this function returns the error code. */
+	int GetCreationError() const
+	{
+	    return error;
+	}
+
+	/** Returns \c true if the RTP packet has a header extension and \c false otherwise. */
+	bool HasExtension() const
+	{
+	    return hasextension;
+	}
+
+	/** Returns \c true if the marker bit was set and \c false otherwise. */
+	bool HasMarker() const
+	{
+	    return hasmarker;
+	}
+
+	/** Returns the number of CSRCs contained in this packet. */
+	int GetCSRCCount() const
+	{
+	    return numcsrcs;
+	}
+
+	/** Returns a specific CSRC identifier.
+	 *  Returns a specific CSRC identifier. The parameter \c num can go from 0 to GetCSRCCount()-1.
+	 */
+	uint32_t GetCSRC(int num) const;
+
+	/** Returns the payload type of the packet. */
+	uint8_t GetPayloadType() const
+	{
+	    return payloadtype;
+	}
+
+	/** Returns the extended sequence number of the packet.
+	 *  Returns the extended sequence number of the packet. When the packet is just received,
+	 *  only the low $16$ bits will be set. The high 16 bits can be filled in later.
+	 */
+	uint32_t GetExtendedSequenceNumber() const
+	{
+	    return extseqnr;
+	}
+
+	/** Returns the sequence number of this packet. */
+	uint16_t GetSequenceNumber() const
+	{
+	    return (uint16_t)(extseqnr&0x0000FFFF);
+	}
+
+	/** Sets the extended sequence number of this packet to \c seq. */
+	void SetExtendedSequenceNumber(uint32_t seq)
+	{
+	    extseqnr = seq;
+	}
+
+	/** Returns the timestamp of this packet. */
+	uint32_t GetTimestamp() const
+	{
+	    return timestamp;
+	}
+
+	/** Returns the SSRC identifier stored in this packet. */
+	uint32_t GetSSRC() const
+	{
+	    return ssrc;
+	}
+
+	/** Returns a pointer to the data of the entire packet. */
+	uint8_t *GetPacketData() const
+	{
+	    return packet;
+	}
+
+	/** Returns a pointer to the actual payload data. */
+	uint8_t *GetPayloadData() const
+	{
+	    return payload;
+	}
+
+	/** Returns the length of the entire packet. */
+	std::size_t GetPacketLength() const
+	{
+	    return packetlength;
+	}
+
+	/** Returns the payload length. */
+	std::size_t GetPayloadLength() const
+	{
+	    return payloadlength;
+	}
+
+	/** If a header extension is present, this function returns the extension identifier. */
+	uint16_t GetExtensionID() const
+	{
+	    return extid;
+	}
+
+	/** Returns the length of the header extension data. */
+	uint8_t *GetExtensionData() const
+	{
+	    return extension;
+	}
+
+	/** Returns the length of the header extension data. */
+	std::size_t GetExtensionLength() const
+	{
+	    return extensionlength;
+	}
+#ifdef RTPDEBUG
+	void Dump();
+#endif // RTPDEBUG
+
+	/** Returns the time at which this packet was received.
+	 *  When an RTPPacket instance is created from an RTPRawPacket instance, the raw packet's
+	 *  reception time is stored in the RTPPacket instance. This function then retrieves that
+	 *  time.
+	 */
+	RTPTime GetReceiveTime() const
+	{
+	    return receivetime;
+	}
+
+private:
+	void Clear();
+	int ParseRawPacket(RTPRawPacket &rawpack);
+	int BuildPacket(
+	        uint8_t payloadtype,
+	        const void *payloaddata,
+	        std::size_t payloadlen,
+	        uint16_t seqnr,
+	        uint32_t timestamp,
+	        uint32_t ssrc,
+	        bool gotmarker,
+	        uint8_t numcsrcs,
+	        const uint32_t *csrcs,
+	        bool gotextension,
+	        uint16_t extensionid,
+	        uint16_t extensionlen_numwords,
+	        const void *extensiondata,
+	        void *buffer,
+	        std::size_t maxsize);
+
+	template<typename T>
+	T qToHost(const T& x) const {
+	    return m_littleEndian ? qToLittleEndian(x) : qToBigEndian(x);
+	}
+
+	int error;
+	bool m_littleEndian;
+
+	bool hasextension,hasmarker;
+	int numcsrcs;
+
+	uint8_t payloadtype;
+	uint32_t extseqnr,timestamp,ssrc;
+	uint8_t *packet,*payload;
+	std::size_t packetlength,payloadlength;
+
+	uint16_t extid;
+	uint8_t *extension;
+	std::size_t extensionlength;
+
+	bool externalbuffer;
+
+	RTPTime receivetime;
+};
+
+} // end namespace
+
+#endif // RTPPACKET_H
+

qrtplib/rtppacketbuilder.cpp

@@ -9,7 +9,7 @@
 
   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 
+  (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
@@ -46,6 +46,21 @@ namespace qrtplib
 RTPPacketBuilder::RTPPacketBuilder(RTPRandom &r) : rtprnd(r), lastwallclocktime(0,0)
 {
 	init = false;
+	deftsset = false;
+	defaultpayloadtype = 0;
+	lastrtptimestamp = 0;
+	ssrc = 0;
+	numcsrcs = 0;
+	defmarkset = false;
+	defaultmark = false;
+	defaulttimestampinc = 0;
+	timestamp = 0;
+	buffer = 0;
+	numpackets = 0;
+	seqnr = 0;
+	numpayloadbytes = 0;
+	prevrtptimestamp = 0;
+	defptset = false;
 }
 
 RTPPacketBuilder::~RTPPacketBuilder()
@@ -62,22 +77,22 @@ int RTPPacketBuilder::Init(std::size_t max)
 	if (max <= 0) {
 		return ERR_RTP_PACKBUILD_INVALIDMAXPACKETSIZE;
 	}
-	
+
 	maxpacksize = max;
 	buffer = new uint8_t[max];
 	if (buffer == 0) {
 		return ERR_RTP_OUTOFMEM;
 	}
 	packetlength = 0;
-	
+
 	CreateNewSSRC();
 
 	deftsset = false;
 	defptset = false;
 	defmarkset = false;
-		
+
 	numcsrcs = 0;
-	
+
 	init = true;
 	return 0;
 }
@@ -102,7 +117,7 @@ int RTPPacketBuilder::SetMaximumPacketSize(std::size_t max)
 	if (newbuf == 0) {
 		return ERR_RTP_OUTOFMEM;
 	}
-	
+
 	delete[] buffer;
 	buffer = newbuf;
 	maxpacksize = max;
@@ -135,7 +150,7 @@ int RTPPacketBuilder::DeleteCSRC(uint32_t csrc)
 	if (!init) {
 		return ERR_RTP_PACKBUILD_NOTINIT;
 	}
-	
+
 	int i = 0;
 	bool found = false;
 
@@ -151,7 +166,7 @@ int RTPPacketBuilder::DeleteCSRC(uint32_t csrc)
 	if (!found) {
 		return ERR_RTP_PACKBUILD_CSRCNOTINLIST;
 	}
-	
+
 	// move the last csrc in the place of the deleted one
 	numcsrcs--;
 	if (numcsrcs > 0 && numcsrcs != i) {
@@ -184,13 +199,13 @@ uint32_t RTPPacketBuilder::CreateNewSSRC()
 uint32_t RTPPacketBuilder::CreateNewSSRC(RTPSources &sources)
 {
 	bool found;
-	
+
 	do
 	{
 		ssrc = rtprnd.GetRandom32();
 		found = sources.GotEntry(ssrc);
 	} while (found);
-	
+
 	timestamp = rtprnd.GetRandom32();
 	seqnr = rtprnd.GetRandom16();
 
@@ -273,7 +288,7 @@ int RTPPacketBuilder::PrivateBuildPacket(const void *data, std::size_t len,
 		lastrtptimestamp = timestamp;
 		prevrtptimestamp = timestamp;
 	}
-	
+
 	numpayloadbytes += (uint32_t)p.GetPayloadLength();
 	numpackets++;
 	timestamp += timestampinc;

qrtplib/rtprandom.cpp

@@ -9,7 +9,7 @@
 
   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 
+  (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
@@ -35,13 +35,11 @@
 #include "rtprandom.h"
 #include "rtprandomurandom.h"
 #include "rtprandomrand48.h"
+
 #include <time.h>
-#ifndef WIN32
+#include <unistd.h>
-	#include <unistd.h>
+
-#else
+#include <QDateTime>
-	#include <process.h>
-	#include <stdlib.h>
-#endif // WIN32
 
 //#include "rtpdebug.h"
 
@@ -51,24 +49,15 @@ namespace qrtplib
 uint32_t RTPRandom::PickSeed()
 {
 	uint32_t x;
-// TODO: do it for MinGW see sdrbase/util/uid.h,cpp
+	x = (uint32_t) getpid();
+	QDateTime currentDateTime = QDateTime::currentDateTime();
+	x += currentDateTime.toTime_t();
 #if defined(WIN32)
-	x = (uint32_t)GetCurrentProcessId();
+	x += QDateTime::currentMSecsSinceEpoch() % 1000;
-
-	FILETIME ft;
-	SYSTEMTIME st;
-	
-	GetSystemTime(&st);
-	SystemTimeToFileTime(&st,&ft);
-	
-	x += ft.dwLowDateTime;
-	x ^= (uint32_t)((uint8_t *)this - (uint8_t *)0);
 #else
-	x = (uint32_t)getpid();
-	x += (uint32_t)time(0);
 	x += (uint32_t)clock();
-	x ^= (uint32_t)((uint8_t *)this - (uint8_t *)0);
 #endif
+	x ^= (uint32_t)((uint8_t *)this - (uint8_t *)0);
 	return x;
 }
 
@@ -82,7 +71,7 @@ RTPRandom *RTPRandom::CreateDefaultRandomNumberGenerator()
 		delete r;
 		rRet = new RTPRandomRand48();
 	}
-	
+
 	return rRet;
 }
 

qrtplib/rtprawpacket.h

@@ -0,0 +1,183 @@
+/*
+  Rewritten to fit into the Qt Network framework
+  Copyright (c) 2018 Edouard Griffiths, F4EXB
+
+  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 rtprawpacket.h
+ */
+
+#ifndef RTPRAWPACKET_H
+
+#define RTPRAWPACKET_H
+
+//#include "rtpconfig.h"
+#include "rtptimeutilities.h"
+//#include "rtpaddress.h"
+//#include "rtptypes.h"
+//#include "rtpmemoryobject.h"
+#include <cstddef>
+#include <QHostAddress>
+
+namespace qrtplib
+{
+
+/** This class is used by the transmission component to store the incoming RTP and RTCP data in. */
+class RTPRawPacket
+{
+public:
+    	/** Creates an instance which stores data from \c data with length \c datalen.
+	 *  Creates an instance which stores data from \c data with length \c datalen. Only the pointer
+	 *  to the data is stored, no actual copy is made! The address from which this packet originated
+	 *  is set to \c address and the time at which the packet was received is set to \c recvtime.
+	 *  The flag which indicates whether this data is RTP or RTCP data is set to \c rtp. A memory
+	 *  manager can be installed as well.
+	 */
+	RTPRawPacket(uint8_t *data, std::size_t datalen, QHostAddress *address, RTPTime &recvtime, bool rtp);
+	~RTPRawPacket();
+
+	/** Returns the pointer to the data which is contained in this packet. */
+	uint8_t *GetData()
+	{
+	    return packetdata;
+	}
+
+	/** Returns the length of the packet described by this instance. */
+	std::size_t GetDataLength() const
+	{
+	    return packetdatalength;
+	}
+
+	/** Returns the time at which this packet was received. */
+	RTPTime GetReceiveTime() const
+	{
+	    return receivetime;
+	}
+
+	/** Returns the address stored in this packet. */
+	const QHostAddress *GetSenderAddress() const
+	{
+	    return senderaddress;
+	}
+
+	/** Returns \c true if this data is RTP data, \c false if it is RTCP data. */
+	bool IsRTP() const
+	{
+	    return isrtp;
+	}
+
+	/** Sets the pointer to the data stored in this packet to zero.
+	 *  Sets the pointer to the data stored in this packet to zero. This will prevent
+	 *  a \c delete call for the actual data when the destructor of RTPRawPacket is called.
+	 *  This function is used by the RTPPacket and RTCPCompoundPacket classes to obtain
+	 *  the packet data (without having to copy it)	and to make sure the data isn't deleted
+	 *  when the destructor of RTPRawPacket is called.
+	 */
+	void ZeroData()
+	{
+	    packetdata = 0;
+	    packetdatalength = 0;
+	}
+
+	/** Allocates a number of bytes for RTP or RTCP data using the memory manager that
+	 *  was used for this raw packet instance, can be useful if the RTPRawPacket::SetData
+	 *  function will be used. */
+	uint8_t *AllocateBytes(bool isrtp, int recvlen) const;
+
+	/** Deallocates the previously stored data and replaces it with the data that's
+	 *  specified, can be useful when e.g. decrypting data in RTPSession::OnChangeIncomingData */
+	void SetData(uint8_t *data, std::size_t datalen);
+
+	/** Deallocates the currently stored RTPAddress instance and replaces it
+	 *  with the one that's specified (you probably don't need this function). */
+	void SetSenderAddress(QHostAddress *address);
+private:
+	void DeleteData();
+
+	uint8_t *packetdata;
+	std::size_t packetdatalength;
+	RTPTime receivetime;
+	QHostAddress *senderaddress;
+	bool isrtp;
+};
+
+inline RTPRawPacket::RTPRawPacket(
+        uint8_t *data,
+        std::size_t datalen,
+        QHostAddress *address,
+        RTPTime &recvtime,
+        bool rtp): receivetime(recvtime)
+{
+	packetdata = data;
+	packetdatalength = datalen;
+	senderaddress = address;
+	isrtp = rtp;
+}
+
+inline RTPRawPacket::~RTPRawPacket()
+{
+	DeleteData();
+}
+
+inline void RTPRawPacket::DeleteData()
+{
+	if (packetdata) {
+	    delete[] packetdata;
+	}
+
+	packetdata = 0;
+}
+
+inline uint8_t *RTPRawPacket::AllocateBytes(bool isrtp __attribute__((unused)), int recvlen) const
+{
+    return new uint8_t[recvlen];
+}
+
+inline void RTPRawPacket::SetData(uint8_t *data, std::size_t datalen)
+{
+	if (packetdata) {
+	    delete[] packetdata;
+	}
+
+	packetdata = data;
+	packetdatalength = datalen;
+}
+
+inline void RTPRawPacket::SetSenderAddress(QHostAddress *address)
+{
+	senderaddress = address;
+}
+
+} // end namespace
+
+#endif // RTPRAWPACKET_H
+

qrtplib/rtpstructs.h

@@ -0,0 +1,130 @@
+/*
+  Rewritten to fit into the Qt Network framework
+  Copyright (c) 2018 Edouard Griffiths, F4EXB
+
+  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 rtpstructs.h
+ */
+
+#ifndef RTPSTRUCTS_H
+
+#define RTPSTRUCTS_H
+
+//#include "rtpconfig.h"
+//#include "rtptypes.h"
+
+namespace qrtplib
+{
+
+struct RTPHeader
+{
+#ifdef RTP_BIG_ENDIAN
+	uint8_t version:2;
+	uint8_t padding:1;
+	uint8_t extension:1;
+	uint8_t csrccount:4;
+
+	uint8_t marker:1;
+	uint8_t payloadtype:7;
+#else // little endian
+	uint8_t csrccount:4;
+	uint8_t extension:1;
+	uint8_t padding:1;
+	uint8_t version:2;
+
+	uint8_t payloadtype:7;
+	uint8_t marker:1;
+#endif // RTP_BIG_ENDIAN
+
+	uint16_t sequencenumber;
+	uint32_t timestamp;
+	uint32_t ssrc;
+};
+
+struct RTPExtensionHeader
+{
+	uint16_t extid;
+	uint16_t length;
+};
+
+struct RTPSourceIdentifier
+{
+	uint32_t ssrc;
+};
+
+struct RTCPCommonHeader
+{
+#ifdef RTP_BIG_ENDIAN
+	uint8_t version:2;
+	uint8_t padding:1;
+	uint8_t count:5;
+#else // little endian
+	uint8_t count:5;
+	uint8_t padding:1;
+	uint8_t version:2;
+#endif // RTP_BIG_ENDIAN
+
+	uint8_t packettype;
+	uint16_t length;
+};
+
+struct RTCPSenderReport
+{
+	uint32_t ntptime_msw;
+	uint32_t ntptime_lsw;
+	uint32_t rtptimestamp;
+	uint32_t packetcount;
+	uint32_t octetcount;
+};
+
+struct RTCPReceiverReport
+{
+	uint32_t ssrc; // Identifies about which SSRC's data this report is...
+	uint8_t fractionlost;
+	uint8_t packetslost[3];
+	uint32_t exthighseqnr;
+	uint32_t jitter;
+	uint32_t lsr;
+	uint32_t dlsr;
+};
+
+struct RTCPSDESHeader
+{
+	uint8_t sdesid;
+	uint8_t length;
+};
+
+} // end namespace
+
+#endif // RTPSTRUCTS
+

qrtplib/rtptimeutilities.cpp

@@ -9,7 +9,7 @@
 
   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 
+  (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
@@ -35,7 +35,7 @@
 //#include "rtpconfig.h"
 #include "rtptimeutilities.h"
 
-namespace jrtplib
+namespace qrtplib
 {
 
 RTPTimeInitializerObject::RTPTimeInitializerObject()

qrtplib/rtptimeutilities.h

@@ -9,7 +9,7 @@
 
   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 
+  (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
@@ -51,11 +51,11 @@
 #define C1000000 1000000ULL
 #define CEPOCH 11644473600000000ULL
 
-namespace jrtplib
+namespace qrtplib
 {
 
 /**
- * This is a simple wrapper for the most significant word (MSW) and least 
+ * This is a simple wrapper for the most significant word (MSW) and least
  * significant word (LSW) of an NTP timestamp.
  */
 class RTPNTPTime
@@ -74,25 +74,25 @@ private:
 };
 
 /** This class is used to specify wallclock time, delay intervals etc.
- *  This class is used to specify wallclock time, delay intervals etc. 
+ *  This class is used to specify wallclock time, delay intervals etc.
  *  It stores a number of seconds and a number of microseconds.
  */
 class RTPTime
 {
 public:
-	/** Returns an RTPTime instance representing the current wallclock time. 
+	/** Returns an RTPTime instance representing the current wallclock time.
-	 *  Returns an RTPTime instance representing the current wallclock time. This is expressed 
+	 *  Returns an RTPTime instance representing the current wallclock time. This is expressed
 	 *  as a number of seconds since 00:00:00 UTC, January 1, 1970.
 	 */
 	static RTPTime CurrentTime();
 
 	/** This function waits the amount of time specified in \c delay. */
 	static void Wait(const RTPTime &delay);
-		
+
 	/** Creates an RTPTime instance representing \c t, which is expressed in units of seconds. */
 	RTPTime(double t);
 
-	/** Creates an instance that corresponds to \c ntptime. 
+	/** Creates an instance that corresponds to \c ntptime.
 	 *  Creates an instance that corresponds to \c ntptime.  If
 	 *  the conversion cannot be made, both the seconds and the
 	 *  microseconds are set to zero.
@@ -155,7 +155,7 @@ inline RTPTime::RTPTime(RTPNTPTime ntptime)
 	else
 	{
 		uint32_t sec = ntptime.GetMSW() - RTP_NTPTIMEOFFSET;
-		
+
 		double x = (double)ntptime.GetLSW();
 		x /= (65536.0*65536.0);
 		x *= 1000000.0;
@@ -233,7 +233,7 @@ inline RTPTime RTPTime::CurrentTime()
 inline RTPTime RTPTime::CurrentTime()
 {
 	struct timeval tv;
-	
+
 	gettimeofday(&tv,0);
 	return RTPTime((uint64_t)tv.tv_sec,(uint32_t)tv.tv_usec);
 }
@@ -260,13 +260,13 @@ inline void RTPTime::Wait(const RTPTime &delay)
 }
 
 inline RTPTime &RTPTime::operator-=(const RTPTime &t)
-{ 
+{
 	m_t -= t.m_t;
 	return *this;
 }
 
 inline RTPTime &RTPTime::operator+=(const RTPTime &t)
-{ 
+{
 	m_t += t.m_t;
 	return *this;
 }
@@ -279,7 +279,7 @@ inline RTPNTPTime RTPTime::GetNTPTime() const
 	uint32_t msw = sec+RTP_NTPTIMEOFFSET;
 	uint32_t lsw;
 	double x;
-	
+
     x = microsec/1000000.0;
 	x *= (65536.0*65536.0);
 	lsw = (uint32_t)x;