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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.
// Select from multiple, prioritized RTP streams, based on RTP sequence
// number, producing a single output stream
// C++ header
#ifndef _PRIORITIZED_RTP_STREAM_SELECTOR_HH
#define _PRIORITIZED_RTP_STREAM_SELECTOR_HH
#ifndef _RTCP_HH
#include "RTCP.hh"
#endif
class PrioritizedRTPStreamSelector: public FramedSource {
public:
static PrioritizedRTPStreamSelector*
createNew(UsageEnvironment& env, unsigned seqNumStagger);
// seqNumStagger is the maximum staggering of RTP sequence #s expected
unsigned addInputRTPStream(RTPSource* inputStream,
RTCPInstance* inputStreamRTCP);
// the input streams are assumed to be added in priority order;
// highest priority first. Returns the priority (0 == highest)
void removeInputRTPStream(unsigned priority); // also closes stream
static Boolean lookupByName(UsageEnvironment& env,
char const* sourceName,
PrioritizedRTPStreamSelector*& resultSource);
friend class PrioritizedInputStreamDescriptor;
private:
// Redefined virtual functions:
virtual Boolean isPrioritizedRTPStreamSelector() const;
void doGetNextFrame();
private:
PrioritizedRTPStreamSelector(UsageEnvironment& env,
unsigned seqNumStagger);
// called only by createNew()
virtual ~PrioritizedRTPStreamSelector();
void startReadingProcess();
void handleNewIncomingFrame(unsigned priority, unsigned short rtpSeqNo,
unsigned char* buffer, unsigned frameSize);
Boolean deliverFrameToClient(unsigned& uSecondsToDefer);
static void completeDelivery(void* clientData);
private:
unsigned fNextInputStreamPriority;
class PrioritizedInputStreamDescriptor* fInputStreams;
class PacketWarehouse* fWarehouse;
Boolean fAmCurrentlyReading;
Boolean fNeedAFrame;
};
#endif
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