New file |
| | |
| | | /********** |
| | | 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) 1996-2017 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 |