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141 lines
4.1 KiB
C++
141 lines
4.1 KiB
C++
/*
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This file is a part of JRTPLIB
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Copyright (c) 1999-2017 Jori Liesenborgs
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Contact: jori.liesenborgs@gmail.com
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This library was developed at the Expertise Centre for Digital Media
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(http://www.edm.uhasselt.be), a research center of the Hasselt University
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(http://www.uhasselt.be). The library is based upon work done for
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my thesis at the School for Knowledge Technology (Belgium/The Netherlands).
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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IN THE SOFTWARE.
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*/
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/**
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* \file rtcpbyepacket.h
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*/
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#ifndef RTCPBYEPACKET_H
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#define RTCPBYEPACKET_H
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#include "rtpconfig.h"
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#include "rtcppacket.h"
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#include "rtpstructs.h"
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#include "rtpendian.h"
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#include "util/export.h"
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namespace qrtplib
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{
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class RTCPCompoundPacket;
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/** Describes an RTCP BYE packet. */
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class QRTPLIB_API RTCPBYEPacket: public RTCPPacket
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{
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public:
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/** Creates an instance based on the data in \c data with length \c datalen.
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* Creates an instance based on the data in \c data with length \c datalen. Since the \c data pointer
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* is referenced inside the class (no copy of the data is made) one must make sure that the memory it
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* points to is valid as long as the class instance exists.
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*/
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RTCPBYEPacket(uint8_t *data, std::size_t datalen);
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~RTCPBYEPacket()
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{
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}
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/** Returns the number of SSRC identifiers present in this BYE packet. */
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int GetSSRCCount() const;
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/** Returns the SSRC described by \c index which may have a value from 0 to GetSSRCCount()-1
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* (note that no check is performed to see if \c index is valid).
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*/
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uint32_t GetSSRC(int index) const; // note: no check is performed to see if index is valid!
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/** Returns true if the BYE packet contains a reason for leaving. */
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bool HasReasonForLeaving() const;
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/** Returns the length of the string which describes why the source(s) left. */
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std::size_t GetReasonLength() const;
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/** Returns the actual reason for leaving data. */
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uint8_t *GetReasonData();
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private:
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RTPEndian m_endian;
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std::size_t reasonoffset;
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};
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inline int RTCPBYEPacket::GetSSRCCount() const
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{
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if (!knownformat)
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return 0;
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RTCPCommonHeader *hdr = (RTCPCommonHeader *) data;
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return (int) (hdr->count);
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}
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inline uint32_t RTCPBYEPacket::GetSSRC(int index) const
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{
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if (!knownformat)
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return 0;
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uint32_t *ssrc = (uint32_t *) (data + sizeof(RTCPCommonHeader) + sizeof(uint32_t) * index);
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return m_endian.qToHost(*ssrc);
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}
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inline bool RTCPBYEPacket::HasReasonForLeaving() const
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{
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if (!knownformat)
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return false;
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if (reasonoffset == 0)
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return false;
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return true;
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}
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inline std::size_t RTCPBYEPacket::GetReasonLength() const
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{
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if (!knownformat)
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return 0;
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if (reasonoffset == 0)
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return 0;
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uint8_t *reasonlen = (data + reasonoffset);
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return (std::size_t)(*reasonlen);
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}
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inline uint8_t *RTCPBYEPacket::GetReasonData()
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{
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if (!knownformat)
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return 0;
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if (reasonoffset == 0)
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return 0;
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uint8_t *reasonlen = (data + reasonoffset);
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if ((*reasonlen) == 0)
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return 0;
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return (data + reasonoffset + 1);
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}
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} // end namespace
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#endif // RTCPBYEPACKET_H
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