Image Component Library (ICL)
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Channel.h
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00001 /********************************************************************
00002 **                Image Component Library (ICL)                    **
00003 **                                                                 **
00004 ** Copyright (C) 2006-2013 CITEC, University of Bielefeld          **
00005 **                         Neuroinformatics Group                  **
00006 ** Website: www.iclcv.org and                                      **
00007 **          http://opensource.cit-ec.de/projects/icl               **
00008 **                                                                 **
00009 ** File   : ICLCore/src/ICLCore/Channel.h                          **
00010 ** Module : ICLCore                                                **
00011 ** Authors: Christof Elbrechter                                    **
00012 **                                                                 **
00013 **                                                                 **
00014 ** GNU LESSER GENERAL PUBLIC LICENSE                               **
00015 ** This file may be used under the terms of the GNU Lesser General **
00016 ** Public License version 3.0 as published by the                  **
00017 **                                                                 **
00018 ** Free Software Foundation and appearing in the file LICENSE.LGPL **
00019 ** included in the packaging of this file.  Please review the      **
00020 ** following information to ensure the license requirements will   **
00021 ** be met: http://www.gnu.org/licenses/lgpl-3.0.txt                **
00022 **                                                                 **
00023 ** The development of this software was supported by the           **
00024 ** Excellence Cluster EXC 277 Cognitive Interaction Technology.    **
00025 ** The Excellence Cluster EXC 277 is a grant of the Deutsche       **
00026 ** Forschungsgemeinschaft (DFG) in the context of the German       **
00027 ** Excellence Initiative.                                          **
00028 **                                                                 **
00029 ********************************************************************/
00030 
00031 #pragma once
00032 
00033 #include <ICLUtils/CompatMacros.h>
00034 #include <ICLCore/Types.h>
00035 #include <ICLUtils/Size.h>
00036 #include <ICLUtils/Point.h>
00037 #include <ICLUtils/Rect.h>
00038 #include <ICLCore/ImgIterator.h>
00039 
00040 namespace icl{
00041   namespace core{
00042   
00043   
00045 
00143     template<class T>
00144     class Channel{
00145       mutable T *m_data;   
00146       mutable utils::Size m_size;
00147       mutable utils::Rect m_roi;
00148       
00149       public:
00151 
00153       Channel():m_data(0){}
00154   
00156       inline Channel(const Channel &other){
00157         *this = other;      
00158       }    
00159   
00161       Channel<T> &operator=(Channel<T> &other){
00162         m_data = other.m_data;
00163         m_size = other.m_size;
00164         m_roi = other.m_roi;
00165         return *this;
00166       }
00167   
00169 
00172       const Channel<T> &operator=(const Channel<T> &other) const{
00173         return *const_cast<Channel*>(this) = const_cast<Channel<T>&>(other);
00174       }
00175   
00177 
00182       inline T &operator()(int x, int y){ 
00183         return m_data[x+m_size.width*y]; 
00184       }
00185 
00187 
00188       inline T &operator()(const utils::Point &p){
00189         return operator()(p.x,p.y);
00190       }
00191 
00193 
00194       inline const T &operator()(const utils::Point &p) const{
00195         return operator()(p.x,p.y);
00196       }
00197       
00199 
00204       inline const T &operator()(int x, int y) const{  
00205         return m_data[x+m_size.width*y]; 
00206       }
00207       
00209 
00212       inline T &operator[](int idx) { 
00213         return m_data[idx]; 
00214       }
00215       
00217 
00220       inline const T &operator[](int idx) const { 
00221         return m_data[idx]; 
00222       }
00223   
00225 
00230       template<class Vec2D>
00231       inline T operator()(const Vec2D &p) const{
00232         float fX0 = p[0] - floor(p[0]), fX1 = 1.0 - fX0;
00233         float fY0 = p[1] - floor(p[1]), fY1 = 1.0 - fY0;
00234         const T* pLL = &operator()((int)p[0],(int)p[1]);
00235         float a = *pLL;        //  a b
00236         float b = *(++pLL);    //  c d
00237         pLL += getWidth();
00238         float d = *pLL;
00239         float c = *(--pLL);
00240         return fX1 * (fY1*a + fY0*c) + fX0 * (fY1*b + fY0*d);
00241       }
00242   
00244       typedef T* iterator;
00245   
00247       typedef const T* const_iterator;
00248   
00250       typedef ImgIterator<T> roi_iterator;
00251   
00253       typedef const ImgIterator<T> const_roi_iterator;
00254       
00256       iterator begin(){
00257         return m_data;
00258       }
00259       
00261       const_iterator begin() const{
00262         return m_data;
00263       }
00264   
00266       iterator end(){
00267         return m_data+getDim();
00268       }
00269   
00271       const_iterator end() const{
00272         return m_data+getDim();
00273       }
00274   
00276       inline roi_iterator beginROI(){
00277         return roi_iterator(m_data,getWidth(),getROI());
00278       } 
00279   
00281       inline const_roi_iterator beginROI() const{
00282         return const_cast<Channel<T>*>(this)->beginROI();
00283       } 
00284       
00286 
00287       inline roi_iterator endROI() {
00288         return roi_iterator::create_end_roi_iterator(m_data,getWidth(),getROI());
00289       }
00290   
00292       inline const_roi_iterator endROI() const{
00293         return const_roi_iterator::create_end_roi_iterator(m_data,getWidth(),getROI());
00294       }
00295   
00296       bool isNull() const { return !m_data; }
00297       
00299 
00300       inline int getWidth() const { return m_size.width; }
00301   
00303 
00304       inline int getHeight() const { return m_size.height; }
00305   
00307       inline const utils::Size& getSize() const { return m_size; }
00308       
00310 
00311       inline int getDim() const { return m_size.getDim(); }
00312       
00314       inline const utils::Rect &getROI() const { return m_roi; }
00315   
00317       inline utils::Point getROIOffset() const { return m_roi.ul(); }
00318   
00320       inline utils::Size getROISize() const { return m_roi.getSize(); }
00321   
00323       inline int getROIWidth() const { return m_roi.width; }
00324   
00326       inline int getROIHeight() const { return m_roi.height; }
00327   
00329       inline int getROIXOffset() const { return m_roi.x; }
00330   
00332       inline int getROIYOffset() const { return m_roi.y; }
00333   
00335 
00336       void redefineROI(const utils::Rect &newROI) const{
00337         m_roi = newROI;
00338       }
00339       
00341       friend class Img<T>;
00342   
00343       private:    
00345 
00348       inline Channel(const T *data, const utils::Size &size, const utils::Rect &roi):
00349       m_data(data),m_size(size),m_roi(roi){}
00350   
00351       inline Channel(T *data, const utils::Size &size, const utils::Rect &roi):
00352       m_data(data),m_size(size),m_roi(roi){}
00353   
00354     };
00355     
00357   #define ICL_INSTANTIATE_DEPTH(D) typedef Channel<icl##D> Channel##D;
00358     ICL_INSTANTIATE_ALL_DEPTHS
00359   #undef ICL_INSTANTIATE_DEPTH
00360 
00361   } // namespace core
00362 }
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