255 lines
6.9 KiB
C++
255 lines
6.9 KiB
C++
/*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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// Intel License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2000, Intel Corporation, 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 Intel Corporation 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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//
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// Image.cpp: implementation of the CvvImage class.
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//
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//////////////////////////////////////////////////////////////////////
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#include "_highgui.h"
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#if defined __cplusplus && (!defined WIN32 || !defined __GNUC__)
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//////////////////////////////////////////////////////////////////////
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// Construction/Destruction
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//////////////////////////////////////////////////////////////////////
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CvvImage::CvvImage()
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{
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m_img = 0;
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}
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void CvvImage::Destroy()
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{
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cvReleaseImage( &m_img );
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}
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CvvImage::~CvvImage()
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{
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Destroy();
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}
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bool CvvImage::Create( int w, int h, int bpp, int origin )
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{
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const unsigned max_img_size = 10000;
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if( (bpp != 8 && bpp != 24 && bpp != 32) ||
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(unsigned)w >= max_img_size || (unsigned)h >= max_img_size ||
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(origin != IPL_ORIGIN_TL && origin != IPL_ORIGIN_BL))
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{
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assert(0); // most probably, it is a programming error
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return false;
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}
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if( !m_img || Bpp() != bpp || m_img->width != w || m_img->height != h )
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{
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if( m_img && m_img->nSize == sizeof(IplImage))
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Destroy();
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/* prepare IPL header */
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m_img = cvCreateImage( cvSize( w, h ), IPL_DEPTH_8U, bpp/8 );
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}
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if( m_img )
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m_img->origin = origin == 0 ? IPL_ORIGIN_TL : IPL_ORIGIN_BL;
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return m_img != 0;
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}
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void CvvImage::CopyOf( CvvImage& image, int desired_color )
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{
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IplImage* img = image.GetImage();
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if( img )
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{
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CopyOf( img, desired_color );
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}
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}
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#define HG_IS_IMAGE(img) \
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((img) != 0 && ((const IplImage*)(img))->nSize == sizeof(IplImage) && \
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((IplImage*)img)->imageData != 0)
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void CvvImage::CopyOf( IplImage* img, int desired_color )
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{
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if( HG_IS_IMAGE(img) )
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{
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int color = desired_color;
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CvSize size = cvGetSize( img );
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if( color < 0 )
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color = img->nChannels > 1;
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if( Create( size.width, size.height,
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(!color ? 1 : img->nChannels > 1 ? img->nChannels : 3)*8,
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img->origin ))
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{
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cvConvertImage( img, m_img, 0 );
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}
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}
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}
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bool CvvImage::Load( const char* filename, int desired_color )
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{
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IplImage* img = cvLoadImage( filename, desired_color );
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if( !img )
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return false;
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CopyOf( img, desired_color );
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cvReleaseImage( &img );
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return true;
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}
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bool CvvImage::LoadRect( const char* filename,
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int desired_color, CvRect r )
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{
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if( r.width < 0 || r.height < 0 ) return false;
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IplImage* img = cvLoadImage( filename, desired_color );
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if( !img )
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return false;
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if( r.width == 0 || r.height == 0 )
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{
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r.width = img->width;
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r.height = img->height;
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r.x = r.y = 0;
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}
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if( r.x > img->width || r.y > img->height ||
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r.x + r.width < 0 || r.y + r.height < 0 )
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{
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cvReleaseImage( &img );
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return false;
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}
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/* truncate r to source image */
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if( r.x < 0 )
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{
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r.width += r.x;
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r.x = 0;
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}
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if( r.y < 0 )
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{
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r.height += r.y;
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r.y = 0;
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}
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if( r.x + r.width > img->width )
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r.width = img->width - r.x;
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if( r.y + r.height > img->height )
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r.height = img->height - r.y;
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cvSetImageROI( img, r );
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CopyOf( img, desired_color );
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cvReleaseImage( &img );
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return true;
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}
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bool CvvImage::Save( const char* filename )
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{
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if( !m_img )
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return false;
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cvSaveImage( filename, m_img );
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return true;
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}
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#ifdef WIN32
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void CImage::DrawToHDC( HDC hDCDst, RECT* pDstRect )
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{
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if( pDstRect && m_img && m_img->depth == IPL_DEPTH_8U && m_img->imageData )
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{
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uchar buffer[sizeof(BITMAPINFOHEADER) + 1024];
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BITMAPINFO* bmi = (BITMAPINFO*)buffer;
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int bmp_w = m_img->width, bmp_h = m_img->height;
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CvRect roi = cvGetImageROI( m_img );
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CvRect dst = RectToCvRect( *pDstRect );
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if( roi.width == dst.width && roi.height == dst.height )
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{
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Show( hDCDst, dst.x, dst.y, dst.width, dst.height, roi.x, roi.y );
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return;
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}
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if( roi.width > dst.width )
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{
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SetStretchBltMode(
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hDCDst, // handle to device context
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HALFTONE );
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}
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else
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{
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SetStretchBltMode(
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hDCDst, // handle to device context
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COLORONCOLOR );
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}
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FillBitmapInfo( bmi, bmp_w, bmp_h, Bpp(), m_img->origin );
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::StretchDIBits(
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hDCDst,
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dst.x, dst.y, dst.width, dst.height,
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roi.x, roi.y, roi.width, roi.height,
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m_img->imageData, bmi, DIB_RGB_COLORS, SRCCOPY );
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}
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}
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#endif
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void CvvImage::Fill( int color )
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{
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cvSet( m_img, cvScalar(color&255,(color>>8)&255,(color>>16)&255,(color>>24)&255) );
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}
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#endif
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/* End of file. */
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