2010-05-12 01:44:00 +08:00
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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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#include "precomp.hpp"
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#include "bitstrm.hpp"
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2018-01-09 22:56:52 +08:00
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#include "utils.hpp"
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2010-05-12 01:44:00 +08:00
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namespace cv
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{
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const int BS_DEF_BLOCK_SIZE = 1<<15;
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bool bsIsBigEndian( void )
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{
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return (((const int*)"\0\x1\x2\x3\x4\x5\x6\x7")[0] & 255) != 0;
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}
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///////////////////////// RBaseStream ////////////////////////////
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bool RBaseStream::isOpened()
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2012-10-17 15:12:04 +08:00
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{
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2010-05-12 01:44:00 +08:00
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return m_is_opened;
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}
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void RBaseStream::allocate()
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{
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if( !m_allocated )
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{
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m_start = new uchar[m_block_size];
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m_end = m_start + m_block_size;
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m_current = m_end;
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m_allocated = true;
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}
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}
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RBaseStream::RBaseStream()
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{
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m_start = m_end = m_current = 0;
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m_file = 0;
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2017-06-28 21:26:55 +08:00
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m_block_pos = 0;
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2010-05-12 01:44:00 +08:00
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m_block_size = BS_DEF_BLOCK_SIZE;
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m_is_opened = false;
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m_allocated = false;
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}
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RBaseStream::~RBaseStream()
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{
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close(); // Close files
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release(); // free buffers
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}
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void RBaseStream::readBlock()
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{
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setPos( getPos() ); // normalize position
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if( m_file == 0 )
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{
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if( m_block_pos == 0 && m_current < m_end )
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return;
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2018-11-09 00:46:25 +08:00
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throw RBS_THROW_EOS;
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2010-05-12 01:44:00 +08:00
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}
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fseek( m_file, m_block_pos, SEEK_SET );
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size_t readed = fread( m_start, 1, m_block_size, m_file );
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m_end = m_start + readed;
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if( readed == 0 || m_current >= m_end )
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2018-11-09 00:46:25 +08:00
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throw RBS_THROW_EOS;
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2010-05-12 01:44:00 +08:00
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}
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2013-03-23 00:37:49 +08:00
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bool RBaseStream::open( const String& filename )
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2010-05-12 01:44:00 +08:00
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{
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close();
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allocate();
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m_file = fopen( filename.c_str(), "rb" );
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if( m_file )
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{
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m_is_opened = true;
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setPos(0);
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readBlock();
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}
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return m_file != 0;
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}
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bool RBaseStream::open( const Mat& buf )
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{
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close();
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if( buf.empty() )
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return false;
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CV_Assert(buf.isContinuous());
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m_start = buf.data;
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m_end = m_start + buf.cols*buf.rows*buf.elemSize();
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m_allocated = false;
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m_is_opened = true;
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setPos(0);
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return true;
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}
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void RBaseStream::close()
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{
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if( m_file )
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{
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fclose( m_file );
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m_file = 0;
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}
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m_is_opened = false;
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if( !m_allocated )
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m_start = m_end = m_current = 0;
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}
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void RBaseStream::release()
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{
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if( m_allocated )
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delete[] m_start;
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m_start = m_end = m_current = 0;
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m_allocated = false;
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}
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void RBaseStream::setPos( int pos )
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{
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2018-01-09 22:48:55 +08:00
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CV_Assert(isOpened() && pos >= 0);
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2010-05-12 01:44:00 +08:00
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if( !m_file )
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{
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m_current = m_start + pos;
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m_block_pos = 0;
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return;
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}
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int offset = pos % m_block_size;
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m_block_pos = pos - offset;
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m_current = m_start + offset;
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}
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int RBaseStream::getPos()
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{
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2018-01-09 22:48:55 +08:00
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CV_Assert(isOpened());
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2018-01-09 22:56:52 +08:00
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int pos = validateToInt((m_current - m_start) + m_block_pos);
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CV_Assert(pos >= m_block_pos); // overflow check
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CV_Assert(pos >= 0); // overflow check
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return pos;
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2010-05-12 01:44:00 +08:00
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}
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void RBaseStream::skip( int bytes )
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{
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2018-01-09 22:48:55 +08:00
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CV_Assert(bytes >= 0);
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2018-01-09 22:56:52 +08:00
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uchar* old = m_current;
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2010-05-12 01:44:00 +08:00
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m_current += bytes;
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2018-01-09 22:56:52 +08:00
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CV_Assert(m_current >= old); // overflow check
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2010-05-12 01:44:00 +08:00
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}
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///////////////////////// RLByteStream ////////////////////////////
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RLByteStream::~RLByteStream()
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{
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}
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int RLByteStream::getByte()
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{
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uchar *current = m_current;
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int val;
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if( current >= m_end )
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{
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readBlock();
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current = m_current;
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}
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2017-08-16 06:04:55 +08:00
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CV_Assert(current < m_end);
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2010-05-12 01:44:00 +08:00
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val = *((uchar*)current);
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m_current = current + 1;
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return val;
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}
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int RLByteStream::getBytes( void* buffer, int count )
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{
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uchar* data = (uchar*)buffer;
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int readed = 0;
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2018-01-09 22:48:55 +08:00
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CV_Assert(count >= 0);
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2012-10-17 15:12:04 +08:00
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2010-05-12 01:44:00 +08:00
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while( count > 0 )
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{
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int l;
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for(;;)
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{
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l = (int)(m_end - m_current);
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if( l > count ) l = count;
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if( l > 0 ) break;
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readBlock();
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}
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memcpy( data, m_current, l );
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m_current += l;
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data += l;
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count -= l;
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readed += l;
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}
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return readed;
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}
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//////////// RLByteStream & RMByteStream <Get[d]word>s ////////////////
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RMByteStream::~RMByteStream()
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{
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}
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int RLByteStream::getWord()
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{
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uchar *current = m_current;
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int val;
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if( current+1 < m_end )
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{
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val = current[0] + (current[1] << 8);
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m_current = current + 2;
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}
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else
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{
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val = getByte();
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val|= getByte() << 8;
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}
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return val;
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}
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int RLByteStream::getDWord()
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{
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uchar *current = m_current;
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int val;
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if( current+3 < m_end )
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{
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val = current[0] + (current[1] << 8) +
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(current[2] << 16) + (current[3] << 24);
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m_current = current + 4;
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}
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else
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{
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val = getByte();
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val |= getByte() << 8;
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val |= getByte() << 16;
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val |= getByte() << 24;
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}
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return val;
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}
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int RMByteStream::getWord()
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{
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uchar *current = m_current;
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int val;
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if( current+1 < m_end )
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{
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val = (current[0] << 8) + current[1];
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m_current = current + 2;
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}
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else
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{
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val = getByte() << 8;
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val|= getByte();
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}
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return val;
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}
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int RMByteStream::getDWord()
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{
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uchar *current = m_current;
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int val;
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if( current+3 < m_end )
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{
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val = (current[0] << 24) + (current[1] << 16) +
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(current[2] << 8) + current[3];
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m_current = current + 4;
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}
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else
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{
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val = getByte() << 24;
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val |= getByte() << 16;
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val |= getByte() << 8;
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val |= getByte();
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}
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return val;
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}
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/////////////////////////// WBaseStream /////////////////////////////////
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// WBaseStream - base class for output streams
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WBaseStream::WBaseStream()
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{
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m_start = m_end = m_current = 0;
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m_file = 0;
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2017-06-29 21:40:22 +08:00
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m_block_pos = 0;
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2010-05-12 01:44:00 +08:00
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m_block_size = BS_DEF_BLOCK_SIZE;
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m_is_opened = false;
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m_buf = 0;
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}
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WBaseStream::~WBaseStream()
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{
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close();
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release();
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}
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bool WBaseStream::isOpened()
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2012-10-17 15:12:04 +08:00
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{
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2010-05-12 01:44:00 +08:00
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return m_is_opened;
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}
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void WBaseStream::allocate()
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{
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if( !m_start )
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m_start = new uchar[m_block_size];
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m_end = m_start + m_block_size;
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m_current = m_start;
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}
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void WBaseStream::writeBlock()
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{
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int size = (int)(m_current - m_start);
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2012-10-17 15:12:04 +08:00
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2018-01-09 22:48:55 +08:00
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CV_Assert(isOpened());
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2010-05-12 01:44:00 +08:00
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if( size == 0 )
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return;
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if( m_buf )
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{
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size_t sz = m_buf->size();
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m_buf->resize( sz + size );
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memcpy( &(*m_buf)[sz], m_start, size );
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}
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else
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{
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fwrite( m_start, 1, size, m_file );
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}
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m_current = m_start;
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m_block_pos += size;
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}
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2013-03-23 00:37:49 +08:00
|
|
|
bool WBaseStream::open( const String& filename )
|
2010-05-12 01:44:00 +08:00
|
|
|
{
|
|
|
|
close();
|
|
|
|
allocate();
|
2012-10-17 15:12:04 +08:00
|
|
|
|
2010-05-12 01:44:00 +08:00
|
|
|
m_file = fopen( filename.c_str(), "wb" );
|
|
|
|
if( m_file )
|
|
|
|
{
|
|
|
|
m_is_opened = true;
|
|
|
|
m_block_pos = 0;
|
|
|
|
m_current = m_start;
|
|
|
|
}
|
|
|
|
return m_file != 0;
|
|
|
|
}
|
|
|
|
|
2013-02-25 00:14:01 +08:00
|
|
|
bool WBaseStream::open( std::vector<uchar>& buf )
|
2010-05-12 01:44:00 +08:00
|
|
|
{
|
|
|
|
close();
|
|
|
|
allocate();
|
2012-10-17 15:12:04 +08:00
|
|
|
|
2010-05-12 01:44:00 +08:00
|
|
|
m_buf = &buf;
|
|
|
|
m_is_opened = true;
|
|
|
|
m_block_pos = 0;
|
|
|
|
m_current = m_start;
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
void WBaseStream::close()
|
|
|
|
{
|
|
|
|
if( m_is_opened )
|
|
|
|
writeBlock();
|
|
|
|
if( m_file )
|
|
|
|
{
|
|
|
|
fclose( m_file );
|
|
|
|
m_file = 0;
|
|
|
|
}
|
|
|
|
m_buf = 0;
|
|
|
|
m_is_opened = false;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void WBaseStream::release()
|
|
|
|
{
|
|
|
|
if( m_start )
|
|
|
|
delete[] m_start;
|
|
|
|
m_start = m_end = m_current = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
int WBaseStream::getPos()
|
|
|
|
{
|
2018-01-09 22:48:55 +08:00
|
|
|
CV_Assert(isOpened());
|
2010-05-12 01:44:00 +08:00
|
|
|
return m_block_pos + (int)(m_current - m_start);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2012-10-17 15:12:04 +08:00
|
|
|
///////////////////////////// WLByteStream ///////////////////////////////////
|
2010-05-12 01:44:00 +08:00
|
|
|
|
|
|
|
WLByteStream::~WLByteStream()
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
void WLByteStream::putByte( int val )
|
|
|
|
{
|
|
|
|
*m_current++ = (uchar)val;
|
|
|
|
if( m_current >= m_end )
|
|
|
|
writeBlock();
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void WLByteStream::putBytes( const void* buffer, int count )
|
|
|
|
{
|
|
|
|
uchar* data = (uchar*)buffer;
|
2012-10-17 15:12:04 +08:00
|
|
|
|
2018-01-09 22:48:55 +08:00
|
|
|
CV_Assert(data && m_current && count >= 0);
|
2010-05-12 01:44:00 +08:00
|
|
|
|
|
|
|
while( count )
|
|
|
|
{
|
|
|
|
int l = (int)(m_end - m_current);
|
2012-10-17 15:12:04 +08:00
|
|
|
|
2010-05-12 01:44:00 +08:00
|
|
|
if( l > count )
|
|
|
|
l = count;
|
2012-10-17 15:12:04 +08:00
|
|
|
|
2010-05-12 01:44:00 +08:00
|
|
|
if( l > 0 )
|
|
|
|
{
|
|
|
|
memcpy( m_current, data, l );
|
|
|
|
m_current += l;
|
|
|
|
data += l;
|
|
|
|
count -= l;
|
|
|
|
}
|
|
|
|
if( m_current == m_end )
|
|
|
|
writeBlock();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void WLByteStream::putWord( int val )
|
|
|
|
{
|
|
|
|
uchar *current = m_current;
|
|
|
|
|
|
|
|
if( current+1 < m_end )
|
|
|
|
{
|
|
|
|
current[0] = (uchar)val;
|
|
|
|
current[1] = (uchar)(val >> 8);
|
|
|
|
m_current = current + 2;
|
|
|
|
if( m_current == m_end )
|
|
|
|
writeBlock();
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
putByte(val);
|
|
|
|
putByte(val >> 8);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void WLByteStream::putDWord( int val )
|
|
|
|
{
|
|
|
|
uchar *current = m_current;
|
|
|
|
|
|
|
|
if( current+3 < m_end )
|
|
|
|
{
|
|
|
|
current[0] = (uchar)val;
|
|
|
|
current[1] = (uchar)(val >> 8);
|
|
|
|
current[2] = (uchar)(val >> 16);
|
|
|
|
current[3] = (uchar)(val >> 24);
|
|
|
|
m_current = current + 4;
|
|
|
|
if( m_current == m_end )
|
|
|
|
writeBlock();
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
putByte(val);
|
|
|
|
putByte(val >> 8);
|
|
|
|
putByte(val >> 16);
|
|
|
|
putByte(val >> 24);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2012-10-17 15:12:04 +08:00
|
|
|
///////////////////////////// WMByteStream ///////////////////////////////////
|
2010-05-12 01:44:00 +08:00
|
|
|
|
|
|
|
WMByteStream::~WMByteStream()
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void WMByteStream::putWord( int val )
|
|
|
|
{
|
|
|
|
uchar *current = m_current;
|
|
|
|
|
|
|
|
if( current+1 < m_end )
|
|
|
|
{
|
|
|
|
current[0] = (uchar)(val >> 8);
|
|
|
|
current[1] = (uchar)val;
|
|
|
|
m_current = current + 2;
|
|
|
|
if( m_current == m_end )
|
|
|
|
writeBlock();
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
putByte(val >> 8);
|
|
|
|
putByte(val);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void WMByteStream::putDWord( int val )
|
|
|
|
{
|
|
|
|
uchar *current = m_current;
|
|
|
|
|
|
|
|
if( current+3 < m_end )
|
|
|
|
{
|
|
|
|
current[0] = (uchar)(val >> 24);
|
|
|
|
current[1] = (uchar)(val >> 16);
|
|
|
|
current[2] = (uchar)(val >> 8);
|
|
|
|
current[3] = (uchar)val;
|
|
|
|
m_current = current + 4;
|
|
|
|
if( m_current == m_end )
|
|
|
|
writeBlock();
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
putByte(val >> 24);
|
|
|
|
putByte(val >> 16);
|
|
|
|
putByte(val >> 8);
|
|
|
|
putByte(val);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|