EMIPLIB

mipulawencoder.h

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00001 /*
00002     
00003   This file is a part of EMIPLIB, the EDM Media over IP Library.
00004   
00005   Copyright (C) 2006-2011  Hasselt University - Expertise Centre for
00006                       Digital Media (EDM) (http://www.edm.uhasselt.be)
00007 
00008   This library is free software; you can redistribute it and/or
00009   modify it under the terms of the GNU Lesser General Public
00010   License as published by the Free Software Foundation; either
00011   version 2.1 of the License, or (at your option) any later version.
00012 
00013   This library is distributed in the hope that it will be useful,
00014   but WITHOUT ANY WARRANTY; without even the implied warranty of
00015   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00016   Lesser General Public License for more details.
00017 
00018   You should have received a copy of the GNU Lesser General Public
00019   License along with this library; if not, write to the Free Software
00020   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  
00021   USA
00022 
00023 */
00024 
00029 #ifndef MIPULAWENCODER_H
00030 
00031 #define MIPULAWENCODER_H
00032 
00033 #include "mipconfig.h"
00034 #include "mipcomponent.h"
00035 #include "miptime.h"
00036 #include <list>
00037 
00038 class MIPEncodedAudioMessage;
00039 
00046 class EMIPLIB_IMPORTEXPORT MIPULawEncoder : public MIPComponent
00047 {
00048 public:
00049         MIPULawEncoder();
00050         ~MIPULawEncoder();
00051 
00053         bool init();
00054 
00056         bool destroy();
00057 
00058         bool push(const MIPComponentChain &chain, int64_t iteration, MIPMessage *pMsg);
00059         bool pull(const MIPComponentChain &chain, int64_t iteration, MIPMessage **pMsg);
00060 private:
00061         void clearMessages();
00062         
00063         bool m_init;
00064         int64_t m_prevIteration;
00065 
00066         std::list<MIPEncodedAudioMessage *> m_messages;
00067         std::list<MIPEncodedAudioMessage *>::const_iterator m_msgIt;
00068 
00069         static const uint8_t expEnc[256];
00070 };      
00071 
00072 #endif // MIPULAWENCODER_H
00073