kopia lustrzana https://github.com/f4exb/sdrangel
69 wiersze
2.3 KiB
C++
69 wiersze
2.3 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.
|
|
|
|
*/
|
|
|
|
#include "rtcpsrpacket.h"
|
|
|
|
namespace qrtplib
|
|
{
|
|
|
|
RTCPSRPacket::RTCPSRPacket(uint8_t *data, std::size_t datalength) :
|
|
RTCPPacket(SR, data, datalength)
|
|
{
|
|
knownformat = false;
|
|
|
|
RTCPCommonHeader *hdr;
|
|
std::size_t len = datalength;
|
|
std::size_t expectedlength;
|
|
|
|
hdr = (RTCPCommonHeader *) data;
|
|
if (hdr->padding)
|
|
{
|
|
uint8_t padcount = data[datalength - 1];
|
|
if ((padcount & 0x03) != 0) // not a multiple of four! (see rfc 3550 p 37)
|
|
return;
|
|
if (((std::size_t) padcount) >= len)
|
|
return;
|
|
len -= (std::size_t) padcount;
|
|
}
|
|
|
|
expectedlength = sizeof(RTCPCommonHeader) + sizeof(uint32_t) + sizeof(RTCPSenderReport);
|
|
expectedlength += sizeof(RTCPReceiverReport) * ((int) hdr->count);
|
|
|
|
if (expectedlength != len)
|
|
return;
|
|
|
|
knownformat = true;
|
|
}
|
|
|
|
} // end namespace
|
|
|