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/**********
This library is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
This library is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation, Inc.,
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
**********/
// "liveMedia"
// Copyright (c) 1996-2005 Live Networks, Inc. All rights reserved.
// A simple RTP sink that packs frames into each outgoing
// packet, without any fragmentation or special headers.
// Implementation
#include "SimpleRTPSink.hh"
SimpleRTPSink::SimpleRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
unsigned char rtpPayloadFormat,
unsigned rtpTimestampFrequency,
char const* sdpMediaTypeString,
char const* rtpPayloadFormatName,
unsigned numChannels,
Boolean allowMultipleFramesPerPacket,
Boolean doNormalMBitRule)
: MultiFramedRTPSink(env, RTPgs, rtpPayloadFormat,
rtpTimestampFrequency, rtpPayloadFormatName,
numChannels),
fAllowMultipleFramesPerPacket(allowMultipleFramesPerPacket) {
fSDPMediaTypeString
= strDup(sdpMediaTypeString == NULL ? "unknown" : sdpMediaTypeString);
fSetMBitOnLastFrames
= strcmp(fSDPMediaTypeString, "video") == 0 && doNormalMBitRule;
}
SimpleRTPSink::~SimpleRTPSink() {
delete[] (char*)fSDPMediaTypeString;
}
SimpleRTPSink*
SimpleRTPSink::createNew(UsageEnvironment& env, Groupsock* RTPgs,
unsigned char rtpPayloadFormat,
unsigned rtpTimestampFrequency,
char const* sdpMediaTypeString,
char const* rtpPayloadFormatName,
unsigned numChannels,
Boolean allowMultipleFramesPerPacket,
Boolean doNormalMBitRule) {
return new SimpleRTPSink(env, RTPgs,
rtpPayloadFormat, rtpTimestampFrequency,
sdpMediaTypeString, rtpPayloadFormatName,
numChannels,
allowMultipleFramesPerPacket,
doNormalMBitRule);
}
void SimpleRTPSink::doSpecialFrameHandling(unsigned fragmentationOffset,
unsigned char* frameStart,
unsigned numBytesInFrame,
struct timeval frameTimestamp,
unsigned numRemainingBytes) {
if (numRemainingBytes == 0) {
// This packet contains the last (or only) fragment of the frame.
// Set the RTP 'M' ('marker') bit, if appropriate:
if (fSetMBitOnLastFrames) setMarkerBit();
}
// Important: Also call our base class's doSpecialFrameHandling(),
// to set the packet's timestamp:
MultiFramedRTPSink::doSpecialFrameHandling(fragmentationOffset,
frameStart, numBytesInFrame,
frameTimestamp,
numRemainingBytes);
}
Boolean SimpleRTPSink::
frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/,
unsigned /*numBytesInFrame*/) const {
return fAllowMultipleFramesPerPacket;
}
char const* SimpleRTPSink::sdpMediaType() const {
return fSDPMediaTypeString;
}
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