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Open Source Computer Vision Library
https://opencv.org/
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183 lines
5.1 KiB
183 lines
5.1 KiB
15 years ago
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/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
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// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * The name of the copyright holders may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Intel Corporation or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#ifndef _BITSTRM_H_
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#define _BITSTRM_H_
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#include <stdio.h>
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namespace cv
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{
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enum
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{
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RBS_THROW_EOS=-123, // <end of stream> exception code
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RBS_THROW_FORB=-124, // <forrbidden huffman code> exception code
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RBS_HUFF_FORB=2047, // forrbidden huffman code "value"
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RBS_BAD_HEADER=-125, // invalid header
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};
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typedef unsigned long ulong;
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// class RBaseStream - base class for other reading streams.
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class RBaseStream
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{
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public:
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//methods
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RBaseStream();
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virtual ~RBaseStream();
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virtual bool open( const string& filename );
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virtual bool open( const Mat& buf );
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virtual void close();
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bool isOpened();
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void setPos( int pos );
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int getPos();
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void skip( int bytes );
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protected:
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bool m_allocated;
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uchar* m_start;
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uchar* m_end;
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uchar* m_current;
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FILE* m_file;
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int m_block_size;
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int m_block_pos;
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bool m_is_opened;
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virtual void readBlock();
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virtual void release();
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virtual void allocate();
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};
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// class RLByteStream - uchar-oriented stream.
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// l in prefix means that the least significant uchar of a multi-uchar value goes first
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class RLByteStream : public RBaseStream
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{
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public:
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virtual ~RLByteStream();
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int getByte();
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int getBytes( void* buffer, int count );
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int getWord();
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int getDWord();
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};
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// class RMBitStream - uchar-oriented stream.
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// m in prefix means that the most significant uchar of a multi-uchar value go first
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class RMByteStream : public RLByteStream
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{
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public:
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virtual ~RMByteStream();
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int getWord();
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int getDWord();
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};
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// WBaseStream - base class for output streams
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class WBaseStream
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{
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public:
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//methods
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WBaseStream();
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virtual ~WBaseStream();
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virtual bool open( const string& filename );
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virtual bool open( vector<uchar>& buf );
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virtual void close();
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bool isOpened();
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int getPos();
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protected:
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uchar* m_start;
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uchar* m_end;
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uchar* m_current;
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int m_block_size;
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int m_block_pos;
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FILE* m_file;
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bool m_is_opened;
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vector<uchar>* m_buf;
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virtual void writeBlock();
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virtual void release();
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virtual void allocate();
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};
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// class WLByteStream - uchar-oriented stream.
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// l in prefix means that the least significant uchar of a multi-byte value goes first
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class WLByteStream : public WBaseStream
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{
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public:
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virtual ~WLByteStream();
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void putByte( int val );
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void putBytes( const void* buffer, int count );
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void putWord( int val );
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void putDWord( int val );
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};
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// class WLByteStream - uchar-oriented stream.
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// m in prefix means that the least significant uchar of a multi-byte value goes last
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class WMByteStream : public WLByteStream
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{
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public:
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virtual ~WMByteStream();
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void putWord( int val );
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void putDWord( int val );
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};
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inline unsigned BSWAP(unsigned v)
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{
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return (v<<24)|((v&0xff00)<<8)|((v>>8)&0xff00)|((unsigned)v>>24);
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}
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bool bsIsBigEndian( void );
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}
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#endif/*_BITSTRM_H_*/
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