seq_decompress.h

/* ***** BEGIN LICENSE BLOCK *****
*
* $Id: seq_decompress.h,v 1.2 2005/01/30 05:11:41 gabest Exp $ $Name:  $
*
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
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* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
* the specific language governing rights and limitations under the License.
*
* The Original Code is BBC Research and Development code.
*
* The Initial Developer of the Original Code is the British Broadcasting
* Corporation.
* Portions created by the Initial Developer are Copyright (C) 2004.
* All Rights Reserved.
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* Contributor(s): Thomas Davies (Original Author),
*                 Scott R Ladd,
*                 Anuradha Suraparaju
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* the GNU General Public License Version 2 (the "GPL"), or the GNU Lesser
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#ifndef _SEQ_DECOMPRESS_H_
#define _SEQ_DECOMPRESS_H_

//---------------------------------------//
//Class to manage decompressing sequences//
//---------------------------------------//

#include "libdirac_common/common.h"
#include <iostream>

namespace dirac
{
    class FrameBuffer;
    class Frame;
    class FrameDecompressor;


    class SequenceDecompressor{
    public:


        SequenceDecompressor(std::istream * ip, bool verbosity);


        ~SequenceDecompressor();


        Frame& DecompressNextFrame(bool skip = false);

        bool ReadNextFrameHeader();

        Frame& GetNextFrame();

        const FrameParams& GetNextFrameParams() const;

        bool Finished() { return m_all_done; }


        SeqParams & GetSeqParams() { return m_sparams; }

    private:

        SequenceDecompressor(const SequenceDecompressor& cpy);


        SequenceDecompressor& operator=(const SequenceDecompressor& rhs);


        void ReadStreamHeader();    

        //Member variables

        bool m_all_done;
        DecoderParams m_decparams;
        SeqParams m_sparams;
        FrameBuffer* m_fbuffer;
        std::istream* m_infile;            
        int m_current_code_fnum;        
        int m_delay;                    
        int m_last_frame_read;
        int m_show_fnum;
        FrameDecompressor *m_fdecoder;
    };

} // namespace dirac

#endif

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