2010-05-11 19:44:00 +02:00
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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 "grfmt_sunras.hpp"
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namespace cv
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{
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static const char* fmtSignSunRas = "\x59\xA6\x6A\x95";
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/************************ Sun Raster reader *****************************/
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SunRasterDecoder::SunRasterDecoder()
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{
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m_offset = -1;
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m_signature = fmtSignSunRas;
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}
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SunRasterDecoder::~SunRasterDecoder()
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{
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}
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ImageDecoder SunRasterDecoder::newDecoder() const
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{
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return new SunRasterDecoder;
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}
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void SunRasterDecoder::close()
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{
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m_strm.close();
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}
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bool SunRasterDecoder::readHeader()
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{
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bool result = false;
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if( !m_strm.open( m_filename )) return false;
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try
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{
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m_strm.skip( 4 );
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m_width = m_strm.getDWord();
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m_height = m_strm.getDWord();
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m_bpp = m_strm.getDWord();
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int palSize = 3*(1 << m_bpp);
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m_strm.skip( 4 );
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m_encoding = (SunRasType)m_strm.getDWord();
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m_maptype = (SunRasMapType)m_strm.getDWord();
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m_maplength = m_strm.getDWord();
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if( m_width > 0 && m_height > 0 &&
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(m_bpp == 1 || m_bpp == 8 || m_bpp == 24 || m_bpp == 32) &&
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(m_encoding == RAS_OLD || m_encoding == RAS_STANDARD ||
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(m_type == RAS_BYTE_ENCODED && m_bpp == 8) || m_type == RAS_FORMAT_RGB) &&
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((m_maptype == RMT_NONE && m_maplength == 0) ||
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(m_maptype == RMT_EQUAL_RGB && m_maplength <= palSize && m_bpp <= 8)))
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{
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memset( m_palette, 0, sizeof(m_palette));
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if( m_maplength != 0 )
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{
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uchar buffer[256*3];
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if( m_strm.getBytes( buffer, m_maplength ) == m_maplength )
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{
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int i;
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palSize = m_maplength/3;
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for( i = 0; i < palSize; i++ )
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{
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m_palette[i].b = buffer[i + 2*palSize];
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m_palette[i].g = buffer[i + palSize];
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m_palette[i].r = buffer[i];
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m_palette[i].a = 0;
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}
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m_type = IsColorPalette( m_palette, m_bpp ) ? CV_8UC3 : CV_8UC1;
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m_offset = m_strm.getPos();
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assert( m_offset == 32 + m_maplength );
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result = true;
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}
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}
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else
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{
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m_type = m_bpp > 8 ? CV_8UC3 : CV_8UC1;
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if( CV_MAT_CN(m_type) == 1 )
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FillGrayPalette( m_palette, m_bpp );
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m_offset = m_strm.getPos();
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assert( m_offset == 32 + m_maplength );
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result = true;
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}
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}
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}
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catch(...)
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{
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}
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if( !result )
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{
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m_offset = -1;
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m_width = m_height = -1;
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m_strm.close();
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}
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return result;
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}
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bool SunRasterDecoder::readData( Mat& img )
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{
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int color = img.channels() > 1;
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uchar* data = img.data;
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2010-07-16 14:54:53 +02:00
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int step = (int)img.step;
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2010-05-11 19:44:00 +02:00
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uchar gray_palette[256];
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bool result = false;
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int src_pitch = ((m_width*m_bpp + 7)/8 + 1) & -2;
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int nch = color ? 3 : 1;
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int width3 = m_width*nch;
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int y;
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if( m_offset < 0 || !m_strm.isOpened())
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return false;
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AutoBuffer<uchar> _src(src_pitch + 32);
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uchar* src = _src;
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AutoBuffer<uchar> _bgr(m_width*3 + 32);
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uchar* bgr = _bgr;
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if( !color && m_maptype == RMT_EQUAL_RGB )
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CvtPaletteToGray( m_palette, gray_palette, 1 << m_bpp );
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try
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{
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m_strm.setPos( m_offset );
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switch( m_bpp )
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{
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/************************* 1 BPP ************************/
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case 1:
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if( m_type != RAS_BYTE_ENCODED )
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{
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for( y = 0; y < m_height; y++, data += step )
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{
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m_strm.getBytes( src, src_pitch );
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if( color )
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FillColorRow1( data, src, m_width, m_palette );
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else
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FillGrayRow1( data, src, m_width, gray_palette );
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}
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result = true;
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}
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else
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{
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uchar* line_end = src + (m_width*m_bpp + 7)/8;
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uchar* tsrc = src;
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y = 0;
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for(;;)
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{
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int max_count = (int)(line_end - tsrc);
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int code = 0, len = 0, len1 = 0;
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do
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{
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code = m_strm.getByte();
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if( code == 0x80 )
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{
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len = m_strm.getByte();
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if( len != 0 ) break;
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}
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tsrc[len1] = (uchar)code;
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}
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while( ++len1 < max_count );
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tsrc += len1;
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if( len > 0 ) // encoded mode
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{
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++len;
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code = m_strm.getByte();
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if( len > line_end - tsrc )
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{
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assert(0);
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goto bad_decoding_1bpp;
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}
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memset( tsrc, code, len );
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tsrc += len;
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}
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if( tsrc >= line_end )
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{
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tsrc = src;
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if( color )
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FillColorRow1( data, src, m_width, m_palette );
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else
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FillGrayRow1( data, src, m_width, gray_palette );
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data += step;
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if( ++y >= m_height ) break;
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}
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}
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result = true;
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bad_decoding_1bpp:
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;
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}
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break;
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/************************* 8 BPP ************************/
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case 8:
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if( m_type != RAS_BYTE_ENCODED )
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{
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for( y = 0; y < m_height; y++, data += step )
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{
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m_strm.getBytes( src, src_pitch );
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if( color )
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FillColorRow8( data, src, m_width, m_palette );
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else
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FillGrayRow8( data, src, m_width, gray_palette );
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}
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result = true;
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}
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else // RLE-encoded
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{
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uchar* line_end = data + width3;
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y = 0;
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for(;;)
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{
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int max_count = (int)(line_end - data);
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int code = 0, len = 0, len1;
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uchar* tsrc = src;
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do
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{
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code = m_strm.getByte();
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if( code == 0x80 )
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{
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len = m_strm.getByte();
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if( len != 0 ) break;
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}
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*tsrc++ = (uchar)code;
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}
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while( (max_count -= nch) > 0 );
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len1 = (int)(tsrc - src);
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if( len1 > 0 )
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{
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if( color )
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FillColorRow8( data, src, len1, m_palette );
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else
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FillGrayRow8( data, src, len1, gray_palette );
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data += len1*nch;
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}
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if( len > 0 ) // encoded mode
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{
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len = (len + 1)*nch;
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code = m_strm.getByte();
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if( color )
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data = FillUniColor( data, line_end, step, width3,
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y, m_height, len,
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m_palette[code] );
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else
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data = FillUniGray( data, line_end, step, width3,
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y, m_height, len,
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gray_palette[code] );
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if( y >= m_height )
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break;
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}
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if( data == line_end )
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{
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if( m_strm.getByte() != 0 )
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goto bad_decoding_end;
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line_end += step;
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data = line_end - width3;
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if( ++y >= m_height ) break;
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}
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}
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result = true;
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bad_decoding_end:
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;
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}
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break;
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/************************* 24 BPP ************************/
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case 24:
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for( y = 0; y < m_height; y++, data += step )
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{
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m_strm.getBytes( color ? data : bgr, src_pitch );
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if( color )
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{
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if( m_type == RAS_FORMAT_RGB )
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icvCvt_RGB2BGR_8u_C3R( data, 0, data, 0, cvSize(m_width,1) );
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|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
icvCvt_BGR2Gray_8u_C3C1R( bgr, 0, data, 0, cvSize(m_width,1),
|
|
|
|
|
m_type == RAS_FORMAT_RGB ? 2 : 0 );
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
result = true;
|
|
|
|
|
break;
|
|
|
|
|
/************************* 32 BPP ************************/
|
|
|
|
|
case 32:
|
|
|
|
|
for( y = 0; y < m_height; y++, data += step )
|
|
|
|
|
{
|
|
|
|
|
/* hack: a0 b0 g0 r0 a1 b1 g1 r1 ... are written to src + 3,
|
|
|
|
|
so when we look at src + 4, we see b0 g0 r0 x b1 g1 g1 x ... */
|
|
|
|
|
m_strm.getBytes( src + 3, src_pitch );
|
|
|
|
|
|
|
|
|
|
if( color )
|
|
|
|
|
icvCvt_BGRA2BGR_8u_C4C3R( src + 4, 0, data, 0, cvSize(m_width,1),
|
|
|
|
|
m_type == RAS_FORMAT_RGB ? 2 : 0 );
|
|
|
|
|
else
|
|
|
|
|
icvCvt_BGRA2Gray_8u_C4C1R( src + 4, 0, data, 0, cvSize(m_width,1),
|
|
|
|
|
m_type == RAS_FORMAT_RGB ? 2 : 0 );
|
|
|
|
|
}
|
|
|
|
|
result = true;
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
assert(0);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
catch( ... )
|
|
|
|
|
{
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return result;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
|
|
|
|
SunRasterEncoder::SunRasterEncoder()
|
|
|
|
|
{
|
|
|
|
|
m_description = "Sun raster files (*.sr;*.ras)";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ImageEncoder SunRasterEncoder::newEncoder() const
|
|
|
|
|
{
|
|
|
|
|
return new SunRasterEncoder;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
SunRasterEncoder::~SunRasterEncoder()
|
|
|
|
|
{
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
bool SunRasterEncoder::write( const Mat& img, const vector<int>& )
|
|
|
|
|
{
|
|
|
|
|
bool result = false;
|
|
|
|
|
int y, width = img.cols, height = img.rows, channels = img.channels();
|
|
|
|
|
int fileStep = (width*channels + 1) & -2;
|
|
|
|
|
WMByteStream strm;
|
|
|
|
|
|
|
|
|
|
if( strm.open(m_filename) )
|
|
|
|
|
{
|
|
|
|
|
strm.putBytes( fmtSignSunRas, (int)strlen(fmtSignSunRas) );
|
|
|
|
|
strm.putDWord( width );
|
|
|
|
|
strm.putDWord( height );
|
|
|
|
|
strm.putDWord( channels*8 );
|
|
|
|
|
strm.putDWord( fileStep*height );
|
|
|
|
|
strm.putDWord( RAS_STANDARD );
|
|
|
|
|
strm.putDWord( RMT_NONE );
|
|
|
|
|
strm.putDWord( 0 );
|
|
|
|
|
|
|
|
|
|
for( y = 0; y < height; y++ )
|
|
|
|
|
strm.putBytes( img.data + img.step*y, fileStep );
|
|
|
|
|
|
|
|
|
|
strm.close();
|
|
|
|
|
result = true;
|
|
|
|
|
}
|
|
|
|
|
return result;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
}
|
