MpegAudioStream.hxx

Go to the documentation of this file.
00001 /*
00002  * Copyright (c) 2004 MUSIC TECHNOLOGY GROUP (MTG)
00003  *                         UNIVERSITAT POMPEU FABRA
00004  *
00005  *
00006  * This program is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU General Public License as published by
00008  * the Free Software Foundation; either version 2 of the License, or
00009  * (at your option) any later version.
00010  *
00011  * This program is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  * GNU General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU General Public License
00017  * along with this program; if not, write to the Free Software
00018  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00019  *
00020  */
00021 
00022 #ifndef __MpegAudioStream__
00023 #define __MpegAudioStream__
00024 
00025 
00026 #include "AudioCodecs_Stream.hxx"
00027 #include "MpegBitstream.hxx"
00028 #include <deque>
00029 #include <string>
00030 
00031 namespace CLAM
00032 {
00033 
00034 namespace AudioCodecs
00035 {
00036         class MpegAudioStream : public Stream
00037         {
00038         public:
00039                 MpegAudioStream( const AudioFile& file );
00040                 ~MpegAudioStream();
00041 
00042                 void PrepareReading();
00043                 void PrepareWriting();
00044                 void Dispose();
00045                 void SeekTo(unsigned long framePosition);
00046 
00047         protected:
00048                 void DiskToMemoryTransfer();
00049                 void MemoryToDiskTransfer();
00050 
00051         private:
00052                 void ConsumeDecodedSamples();
00053 
00054         private:
00055                 std::string   mName;
00056                 FILE*         mpHandle;
00057                 MpegBitstream mBitstream;
00058                 int           mEncodedSampleRate;
00059                 unsigned      _mp3Frame;
00060 
00061                 static const TSize                    mMaxDecodedBlockSize;
00062                 std::vector<std::deque<mad_fixed_t> > mDecodeBuffer;
00063                 TSize                                 mSamplesDecoded;
00064                 std::vector<unsigned long> _seekCache;
00065         };
00066 }
00067 
00068 }
00069 
00070 
00071 #endif // MpegAudioStream.hxx
00072 
Generated by  doxygen 1.6.3