X-Git-Url: https://vcs.maemo.org/git/?a=blobdiff_plain;f=src%2Fhighgui%2Fimage.cpp;fp=src%2Fhighgui%2Fimage.cpp;h=78166554b767b716cb8053a45f52b4bb11c012cd;hb=e4c14cdbdf2fe805e79cd96ded236f57e7b89060;hp=0000000000000000000000000000000000000000;hpb=454138ff8a20f6edb9b65a910101403d8b520643;p=opencv diff --git a/src/highgui/image.cpp b/src/highgui/image.cpp new file mode 100644 index 0000000..7816655 --- /dev/null +++ b/src/highgui/image.cpp @@ -0,0 +1,285 @@ +/*M/////////////////////////////////////////////////////////////////////////////////////// +// +// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. +// +// By downloading, copying, installing or using the software you agree to this license. +// If you do not agree to this license, do not download, install, +// copy or use the software. +// +// +// Intel License Agreement +// For Open Source Computer Vision Library +// +// Copyright (C) 2000, Intel Corporation, all rights reserved. +// Third party copyrights are property of their respective owners. +// +// Redistribution and use in source and binary forms, with or without modification, +// are permitted provided that the following conditions are met: +// +// * Redistribution's of source code must retain the above copyright notice, +// this list of conditions and the following disclaimer. +// +// * Redistribution's in binary form must reproduce the above copyright notice, +// this list of conditions and the following disclaimer in the documentation +// and/or other materials provided with the distribution. +// +// * The name of Intel Corporation may not be used to endorse or promote products +// derived from this software without specific prior written permission. +// +// This software is provided by the copyright holders and contributors "as is" and +// any express or implied warranties, including, but not limited to, the implied +// warranties of merchantability and fitness for a particular purpose are disclaimed. +// In no event shall the Intel Corporation or contributors be liable for any direct, +// indirect, incidental, special, exemplary, or consequential damages +// (including, but not limited to, procurement of substitute goods or services; +// loss of use, data, or profits; or business interruption) however caused +// and on any theory of liability, whether in contract, strict liability, +// or tort (including negligence or otherwise) arising in any way out of +// the use of this software, even if advised of the possibility of such damage. +// +//M*/ + +// +// Image.cpp: implementation of the CvvImage class. +// +////////////////////////////////////////////////////////////////////// + +#include "_highgui.h" + +#if defined __cplusplus + +////////////////////////////////////////////////////////////////////// +// Construction/Destruction +////////////////////////////////////////////////////////////////////// + +CvvImage::CvvImage() +{ + m_img = 0; +} + +void CvvImage::Destroy() +{ + cvReleaseImage( &m_img ); +} + +CvvImage::~CvvImage() +{ + Destroy(); +} + +bool CvvImage::Create( int w, int h, int bpp, int origin ) +{ + const unsigned max_img_size = 10000; + + if( (bpp != 8 && bpp != 24 && bpp != 32) || + (unsigned)w >= max_img_size || (unsigned)h >= max_img_size || + (origin != IPL_ORIGIN_TL && origin != IPL_ORIGIN_BL)) + { + assert(0); // most probably, it is a programming error + return false; + } + + if( !m_img || Bpp() != bpp || m_img->width != w || m_img->height != h ) + { + if( m_img && m_img->nSize == sizeof(IplImage)) + Destroy(); + + /* prepare IPL header */ + m_img = cvCreateImage( cvSize( w, h ), IPL_DEPTH_8U, bpp/8 ); + } + + if( m_img ) + m_img->origin = origin == 0 ? IPL_ORIGIN_TL : IPL_ORIGIN_BL; + + return m_img != 0; +} + +void CvvImage::CopyOf( CvvImage& image, int desired_color ) +{ + IplImage* img = image.GetImage(); + if( img ) + { + CopyOf( img, desired_color ); + } +} + + +#define HG_IS_IMAGE(img) \ + ((img) != 0 && ((const IplImage*)(img))->nSize == sizeof(IplImage) && \ + ((IplImage*)img)->imageData != 0) + + +void CvvImage::CopyOf( IplImage* img, int desired_color ) +{ + if( HG_IS_IMAGE(img) ) + { + int color = desired_color; + CvSize size = cvGetSize( img ); + + if( color < 0 ) + color = img->nChannels > 1; + + if( Create( size.width, size.height, + (!color ? 1 : img->nChannels > 1 ? img->nChannels : 3)*8, + img->origin )) + { + cvConvertImage( img, m_img, 0 ); + } + } +} + + +bool CvvImage::Load( const char* filename, int desired_color ) +{ + IplImage* img = cvLoadImage( filename, desired_color ); + if( !img ) + return false; + + CopyOf( img, desired_color ); + cvReleaseImage( &img ); + + return true; +} + + +bool CvvImage::LoadRect( const char* filename, + int desired_color, CvRect r ) +{ + if( r.width < 0 || r.height < 0 ) return false; + + IplImage* img = cvLoadImage( filename, desired_color ); + if( !img ) + return false; + + if( r.width == 0 || r.height == 0 ) + { + r.width = img->width; + r.height = img->height; + r.x = r.y = 0; + } + + if( r.x > img->width || r.y > img->height || + r.x + r.width < 0 || r.y + r.height < 0 ) + { + cvReleaseImage( &img ); + return false; + } + + /* truncate r to source image */ + if( r.x < 0 ) + { + r.width += r.x; + r.x = 0; + } + if( r.y < 0 ) + { + r.height += r.y; + r.y = 0; + } + + if( r.x + r.width > img->width ) + r.width = img->width - r.x; + + if( r.y + r.height > img->height ) + r.height = img->height - r.y; + + cvSetImageROI( img, r ); + CopyOf( img, desired_color ); + + cvReleaseImage( &img ); + return true; +} + + +bool CvvImage::Save( const char* filename ) +{ + if( !m_img ) + return false; + cvSaveImage( filename, m_img ); + return true; +} + + +void CvvImage::Show( const char* window ) +{ + if( m_img ) + cvShowImage( window, m_img ); +} + + +#ifdef WIN32 + +void CvvImage::Show( HDC dc, int x, int y, int w, int h, int from_x, int from_y ) +{ + if( m_img && m_img->depth == IPL_DEPTH_8U ) + { + uchar buffer[sizeof(BITMAPINFOHEADER) + 1024]; + BITMAPINFO* bmi = (BITMAPINFO*)buffer; + int bmp_w = m_img->width, bmp_h = m_img->height; + + FillBitmapInfo( bmi, bmp_w, bmp_h, Bpp(), m_img->origin ); + + from_x = MIN( MAX( from_x, 0 ), bmp_w - 1 ); + from_y = MIN( MAX( from_y, 0 ), bmp_h - 1 ); + + int sw = MAX( MIN( bmp_w - from_x, w ), 0 ); + int sh = MAX( MIN( bmp_h - from_y, h ), 0 ); + + SetDIBitsToDevice( + dc, x, y, sw, sh, from_x, from_y, from_y, sh, + m_img->imageData + from_y*m_img->widthStep, + bmi, DIB_RGB_COLORS ); + } +} + + +void CImage::DrawToHDC( HDC hDCDst, RECT* pDstRect ) +{ + if( pDstRect && m_img && m_img->depth == IPL_DEPTH_8U && m_img->imageData ) + { + uchar buffer[sizeof(BITMAPINFOHEADER) + 1024]; + BITMAPINFO* bmi = (BITMAPINFO*)buffer; + int bmp_w = m_img->width, bmp_h = m_img->height; + + CvRect roi = cvGetImageROI( m_img ); + CvRect dst = RectToCvRect( *pDstRect ); + + if( roi.width == dst.width && roi.height == dst.height ) + { + Show( hDCDst, dst.x, dst.y, dst.width, dst.height, roi.x, roi.y ); + return; + } + + if( roi.width > dst.width ) + { + SetStretchBltMode( + hDCDst, // handle to device context + HALFTONE ); + } + else + { + SetStretchBltMode( + hDCDst, // handle to device context + COLORONCOLOR ); + } + + FillBitmapInfo( bmi, bmp_w, bmp_h, Bpp(), m_img->origin ); + + ::StretchDIBits( + hDCDst, + dst.x, dst.y, dst.width, dst.height, + roi.x, roi.y, roi.width, roi.height, + m_img->imageData, bmi, DIB_RGB_COLORS, SRCCOPY ); + } +} + +#endif + +void CvvImage::Fill( int color ) +{ + cvSet( m_img, cvScalar(color&255,(color>>8)&255,(color>>16)&255,(color>>24)&255) ); +} + +#endif + +/* End of file. */