/usr/include/liveMedia/OggFileSink.hh is in liblivemedia-dev 2018.02.18-1.
This file is owned by root:root, with mode 0o644.
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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 3 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) 1996-2018 Live Networks, Inc. All rights reserved.
// 'Ogg' File Sink (recording a single media track only)
// C++ header
#ifndef _OGG_FILE_SINK_HH
#define _OGG_FILE_SINK_HH
#ifndef _FILE_SINK_HH
#include "FileSink.hh"
#endif
class OggFileSink: public FileSink {
public:
static OggFileSink* createNew(UsageEnvironment& env, char const* fileName,
unsigned samplingFrequency = 0, // used for granule_position
char const* configStr = NULL,
// "configStr" is an optional 'SDP format' string (Base64-encoded)
// representing 'packed configuration headers' ("identification", "comment", "setup")
// to prepend to the output. (For 'Vorbis" audio and 'Theora' video.)
unsigned bufferSize = 100000,
Boolean oneFilePerFrame = False);
// See "FileSink.hh" for a description of these parameters.
protected:
OggFileSink(UsageEnvironment& env, FILE* fid, unsigned samplingFrequency, char const* configStr,
unsigned bufferSize, char const* perFrameFileNamePrefix);
// called only by createNew()
virtual ~OggFileSink();
protected: // redefined virtual functions:
virtual Boolean continuePlaying();
virtual void addData(unsigned char const* data, unsigned dataSize,
struct timeval presentationTime);
virtual void afterGettingFrame(unsigned frameSize, unsigned numTruncatedBytes,
struct timeval presentationTime);
private:
static void ourOnSourceClosure(void* clientData);
void ourOnSourceClosure();
private:
unsigned fSamplingFrequency;
char const* fConfigStr;
Boolean fHaveWrittenFirstFrame, fHaveSeenEOF;
struct timeval fFirstPresentationTime;
int64_t fGranulePosition;
int64_t fGranulePositionAdjustment; // used to ensure that "fGranulePosition" stays monotonic
u_int32_t fPageSequenceNumber;
u_int8_t fPageHeaderBytes[27];
// the header of each Ogg page, through the "number_page_segments" byte
// Special fields used for Theora video:
Boolean fIsTheora;
u_int64_t fGranuleIncrementPerFrame; // == 1 << KFGSHIFT
// Because the last Ogg page before EOF needs to have a special 'eos' bit set in the header,
// we need to defer the writing of each incoming frame. To do this, we maintain a 2nd buffer:
unsigned char* fAltBuffer;
unsigned fAltFrameSize, fAltNumTruncatedBytes;
struct timeval fAltPresentationTime;
};
#endif
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