85 lines
3.7 KiB
C++
85 lines
3.7 KiB
C++
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/**********
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This library is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the
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Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
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This library is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
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more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this library; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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**********/
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// "liveMedia"
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// Copyright (c) 1996-2015 Live Networks, Inc. All rights reserved.
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// A server demultiplexor for a Matroska file
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// C++ header
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#ifndef _MATROSKA_FILE_SERVER_DEMUX_HH
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#define _MATROSKA_FILE_SERVER_DEMUX_HH
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#ifndef _SERVER_MEDIA_SESSION_HH
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#include "ServerMediaSession.hh"
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#endif
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#ifndef _MATROSKA_FILE_HH
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#include "MatroskaFile.hh"
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#endif
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class MatroskaFileServerDemux: public Medium {
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public:
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typedef void (onCreationFunc)(MatroskaFileServerDemux* newDemux, void* clientData);
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static void createNew(UsageEnvironment& env, char const* fileName,
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onCreationFunc* onCreation, void* onCreationClientData,
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char const* preferredLanguage = "eng");
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// Note: Unlike most "createNew()" functions, this one doesn't return a new object immediately. Instead, because this class
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// requires file reading (to parse the Matroska 'Track' headers) before a new object can be initialized, the creation of a new
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// object is signalled by calling - from the event loop - an 'onCreationFunc' that is passed as a parameter to "createNew()".
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ServerMediaSubsession* newServerMediaSubsession();
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ServerMediaSubsession* newServerMediaSubsession(unsigned& resultTrackNumber);
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// Returns a new "ServerMediaSubsession" object that represents the next preferred media track
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// (video, audio, subtitle - in that order) from the file. (Preferred media tracks are based on the file's language preference.)
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// This function returns NULL when no more media tracks exist.
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ServerMediaSubsession* newServerMediaSubsessionByTrackNumber(unsigned trackNumber);
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// As above, but creates a new "ServerMediaSubsession" object for a specific track number within the Matroska file.
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// (You should not call this function more than once with the same track number.)
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// The following public: member functions are called only by the "ServerMediaSubsession" objects:
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MatroskaFile* ourMatroskaFile() { return fOurMatroskaFile; }
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char const* fileName() const { return fFileName; }
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float fileDuration() const { return fOurMatroskaFile->fileDuration(); }
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FramedSource* newDemuxedTrack(unsigned clientSessionId, unsigned trackNumber);
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// Used by the "ServerMediaSubsession" objects to implement their "createNewStreamSource()" virtual function.
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private:
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MatroskaFileServerDemux(UsageEnvironment& env, char const* fileName,
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onCreationFunc* onCreation, void* onCreationClientData,
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char const* preferredLanguage);
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// called only by createNew()
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virtual ~MatroskaFileServerDemux();
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static void onMatroskaFileCreation(MatroskaFile* newFile, void* clientData);
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void onMatroskaFileCreation(MatroskaFile* newFile);
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private:
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char const* fFileName;
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onCreationFunc* fOnCreation;
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void* fOnCreationClientData;
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MatroskaFile* fOurMatroskaFile;
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// Used to implement "newServerMediaSubsession()":
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u_int8_t fNextTrackTypeToCheck;
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// Used to set up demuxing, to implement "newDemuxedTrack()":
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unsigned fLastClientSessionId;
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MatroskaDemux* fLastCreatedDemux;
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};
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#endif
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