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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.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
**********/
// "liveMedia"
// Copyright (c) 1996-2012 Live Networks, Inc.  All rights reserved.
// RTP sink for Vorbis audio
// C++ header

#ifndef _VORBIS_AUDIO_RTP_SINK_HH
#define _VORBIS_AUDIO_RTP_SINK_HH

#ifndef _AUDIO_RTP_SINK_HH
#include "AudioRTPSink.hh"
#endif

class VorbisAudioRTPSink: public AudioRTPSink {
public:
  static VorbisAudioRTPSink* createNew(UsageEnvironment& env,
				       Groupsock* RTPgs,
				       u_int8_t rtpPayloadFormat, u_int32_t rtpTimestampFrequency, unsigned numChannels,
				       // The following headers provide the 'configuration' information, for the SDP description:
				       u_int8_t* identificationHeader, unsigned identificationHeaderSize,
				       u_int8_t* commentHeader, unsigned commentHeaderSize,
				       u_int8_t* setupHeader, unsigned setupHeaderSize);

protected:
  VorbisAudioRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
		     u_int8_t rtpPayloadFormat, u_int32_t rtpTimestampFrequency, unsigned numChannels,
		     u_int8_t* identificationHeader, unsigned identificationHeaderSize,
		     u_int8_t* commentHeader, unsigned commentHeaderSize,
		     u_int8_t* setupHeader, unsigned setupHeaderSize);
	// called only by createNew()

  virtual ~VorbisAudioRTPSink();

private: // redefined virtual functions:
  virtual char const* auxSDPLine(); // for the "a=fmtp:" SDP line

  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
                                      unsigned char* frameStart,
                                      unsigned numBytesInFrame,
                                      struct timeval framePresentationTime,
                                      unsigned numRemainingBytes);
  virtual Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
						 unsigned numBytesInFrame) const;
  virtual unsigned specialHeaderSize() const;
  virtual unsigned frameSpecificHeaderSize() const;
#endif

private:
  u_int32_t fIdent; // "Ident" field used by this stream.  (Only the low 24 bits of this are used.)
  char* fFmtpSDPLine;
};