live: liveMedia/include/ByteStreamMultiFileSource.hh Source File

00001 /**********
00002 This library is free software; you can redistribute it and/or modify it under
00003 the terms of the GNU Lesser General Public License as published by the
00004 Free Software Foundation; either version 2.1 of the License, or (at your
00005 option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
00006 
00007 This library is distributed in the hope that it will be useful, but WITHOUT
00008 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
00009 FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
00010 more details.
00011 
00012 You should have received a copy of the GNU Lesser General Public License
00013 along with this library; if not, write to the Free Software Foundation, Inc.,
00014 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
00015 **********/
00016 // "liveMedia"
00017 // Copyright (c) 1996-2008 Live Networks, Inc.  All rights reserved.
00018 // A source that consists of multiple byte-stream files, read sequentially
00019 // C++ header
00020 
00021 #ifndef _BYTE_STREAM_MULTI_FILE_SOURCE_HH
00022 #define _BYTE_STREAM_MULTI_FILE_SOURCE_HH
00023 
00024 #ifndef _BYTE_STREAM_FILE_SOURCE_HH
00025 #include "ByteStreamFileSource.hh"
00026 #endif
00027 
00028 class ByteStreamMultiFileSource: public FramedSource {
00029 public:
00030   static ByteStreamMultiFileSource*
00031   createNew(UsageEnvironment& env, char const** fileNameArray,
00032             unsigned preferredFrameSize = 0, unsigned playTimePerFrame = 0);
00033   // A 'filename' of NULL indicates the end of the array
00034 
00035   Boolean haveStartedNewFile() const { return fHaveStartedNewFile; }
00036   // True iff the most recently delivered frame was the first from a newly-opened file
00037 
00038 protected:
00039   ByteStreamMultiFileSource(UsageEnvironment& env, char const** fileNameArray,
00040                             unsigned preferredFrameSize, unsigned playTimePerFrame);
00041         // called only by createNew()
00042 
00043   virtual ~ByteStreamMultiFileSource();
00044 
00045 private:
00046   // redefined virtual functions:
00047   virtual void doGetNextFrame();
00048 
00049 private:
00050   static void onSourceClosure(void* clientData);
00051   void onSourceClosure1();
00052   static void afterGettingFrame(void* clientData,
00053                                 unsigned frameSize, unsigned numTruncatedBytes,
00054                                 struct timeval presentationTime,
00055                                 unsigned durationInMicroseconds);
00056 
00057 private:
00058   unsigned fPreferredFrameSize;
00059   unsigned fPlayTimePerFrame;
00060   unsigned fNumSources;
00061   unsigned fCurrentlyReadSourceNumber;
00062   Boolean fHaveStartedNewFile;
00063   char const** fFileNameArray;
00064   ByteStreamFileSource** fSourceArray;
00065 };
00066 
00067 #endif