rtppacket.h

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/*

 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.

 */

#ifndef RTPPACKET_H

#define RTPPACKET_H

#include "rtpconfig.h"
#include "rtptypes.h"
#include "rtptimeutilities.h"
#include "rtpendian.h"

namespace qrtplib
{

class RTPRawPacket;

class RTPPacket
{
public:
    RTPPacket(RTPRawPacket &rawpack);

    RTPPacket(uint8_t payloadtype,
            const void *payloaddata,
            unsigned int 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,
            unsigned int maxpacksize);

    RTPPacket(uint8_t payloadtype,
            const void *payloaddata,
            unsigned int 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,
            unsigned int buffersize);

    virtual ~RTPPacket()
    {
        if (packet && !externalbuffer)
            delete[] packet;
    }

    int GetCreationError() const
    {
        return error;
    }

    bool HasExtension() const
    {
        return hasextension;
    }

    bool HasMarker() const
    {
        return hasmarker;
    }

    int GetCSRCCount() const
    {
        return numcsrcs;
    }

    uint32_t GetCSRC(int num) const;

    uint8_t GetPayloadType() const
    {
        return payloadtype;
    }

    uint32_t GetExtendedSequenceNumber() const
    {
        return extseqnr;
    }

    uint16_t GetSequenceNumber() const
    {
        return (uint16_t) (extseqnr & 0x0000FFFF);
    }

    void SetExtendedSequenceNumber(uint32_t seq)
    {
        extseqnr = seq;
    }

    uint32_t GetTimestamp() const
    {
        return timestamp;
    }

    uint32_t GetSSRC() const
    {
        return ssrc;
    }

    uint8_t *GetPacketData() const
    {
        return packet;
    }

    uint8_t *GetPayloadData() const
    {
        return payload;
    }

    unsigned int GetPacketLength() const
    {
        return packetlength;
    }

    unsigned int GetPayloadLength() const
    {
        return payloadlength;
    }

    uint16_t GetExtensionID() const
    {
        return extid;
    }

    uint8_t *GetExtensionData() const
    {
        return extension;
    }

    unsigned int GetExtensionLength() const
    {
        return extensionlength;
    }

    RTPTime GetReceiveTime() const
    {
        return receivetime;
    }
private:
    void Clear();
    int ParseRawPacket(RTPRawPacket &rawpack);
    int BuildPacket(uint8_t payloadtype, const void *payloaddata, unsigned int 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, unsigned int maxsize);

    RTPEndian m_endian;
    int error;

    bool hasextension, hasmarker;
    int numcsrcs;

    uint8_t payloadtype;
    uint32_t extseqnr, timestamp, ssrc;
    uint8_t *packet, *payload;
    unsigned int packetlength, payloadlength;

    uint16_t extid;
    uint8_t *extension;
    unsigned int extensionlength;

    bool externalbuffer;

    RTPTime receivetime;
};

} // end namespace

#endif // RTPPACKET_H