VorbisAudioRTPSource.hh

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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
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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
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// "liveMedia"
// Copyright (c) 1996-2024 Live Networks, Inc.  All rights reserved.
// Vorbis Audio RTP Sources
// C++ header
 
#ifndef _VORBIS_AUDIO_RTP_SOURCE_HH
#define _VORBIS_AUDIO_RTP_SOURCE_HH
 
#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
#include "MultiFramedRTPSource.hh"
#endif
 
class VorbisAudioRTPSource: public MultiFramedRTPSource {
public:
  static VorbisAudioRTPSource*
  createNew(UsageEnvironment& env, Groupsock* RTPgs,
            unsigned char rtpPayloadFormat,
            unsigned rtpTimestampFrequency);
 
  u_int32_t curPacketIdent() const { return fCurPacketIdent; } // The current "Ident" field; only the low-order 24 bits are used
 
protected:
  VorbisAudioRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
                       unsigned char rtpPayloadFormat,
                       unsigned rtpTimestampFrequency);
      // called only by createNew()
 
  virtual ~VorbisAudioRTPSource();
 
protected:
  // redefined virtual functions:
  virtual Boolean processSpecialHeader(BufferedPacket* packet,
                                       unsigned& resultSpecialHeaderSize);
  virtual char const* MIMEtype() const;
 
private:
  u_int32_t fCurPacketIdent; // only the low-order 24 bits are used
};
 
void parseVorbisOrTheoraConfigStr(char const* configStr,
                                  u_int8_t*& identificationHdr, unsigned& identificationHdrSize,
                                  u_int8_t*& commentHdr, unsigned& commentHdrSize,
                                  u_int8_t*& setupHdr, unsigned& setupHdrSize,
                                  u_int32_t& identField);
    // Returns (in each of the result parameters) unpacked Vorbis or Theora
    // "identification", "comment", and "setup" headers that were specified in a
    // "config" string (in the SDP description for a Vorbis/RTP or Theora/RTP stream).
    // Each of the "*Hdr" result arrays are dynamically allocated by this routine,
    // and must be delete[]d by the caller.
 
#endif