Milena (Olena)
User documentation 2.0a Id
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00001 // Copyright (C) 2010 EPITA Research and Development Laboratory (LRDE) 00002 // 00003 // This file is part of Olena. 00004 // 00005 // Olena is free software: you can redistribute it and/or modify it under 00006 // the terms of the GNU General Public License as published by the Free 00007 // Software Foundation, version 2 of the License. 00008 // 00009 // Olena is distributed in the hope that it will be useful, 00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 // General Public License for more details. 00013 // 00014 // You should have received a copy of the GNU General Public License 00015 // along with Olena. If not, see <http://www.gnu.org/licenses/>. 00016 // 00017 // As a special exception, you may use this file as part of a free 00018 // software project without restriction. Specifically, if other files 00019 // instantiate templates or use macros or inline functions from this 00020 // file, or you compile this file and link it with other files to produce 00021 // an executable, this file does not by itself cause the resulting 00022 // executable to be covered by the GNU General Public License. This 00023 // exception does not however invalidate any other reasons why the 00024 // executable file might be covered by the GNU General Public License. 00025 00029 00030 #ifndef MLN_CONVERT_TO_QIMAGE_NOCOPY_HH 00031 # define MLN_CONVERT_TO_QIMAGE_NOCOPY_HH 00032 00033 # include <QtGui/QImage> 00034 00035 # include <mln/core/concept/image.hh> 00036 # include <mln/geom/nrows.hh> 00037 # include <mln/geom/ncols.hh> 00038 # include <mln/border/resize.hh> 00039 00040 00041 # include <mln/value/qt/rgb32.hh> 00042 # include <mln/value/rgb8.hh> 00043 00044 # if QT_VERSION < 0x040000 00045 # error "Your version of Qt is too old and is not supported." 00046 # endif 00047 00048 00049 namespace mln 00050 { 00051 00052 namespace convert 00053 { 00054 00055 // Implementation 00056 00057 namespace impl 00058 { 00059 00060 template <typename I> 00061 inline 00062 QImage to_qimage_nocopy_qt_rgb32(const Image<I>& ima_) 00063 { 00064 const I& ima = exact(ima_); 00065 mln_precondition(ima.is_valid()); 00066 00067 const int 00068 nrows = geom::nrows(ima), 00069 ncols = geom::ncols(ima); 00070 00071 typedef mln_value(I) V; 00072 QImage qima((uchar *)(&ima(ima.domain().pmin())), ncols, nrows, 00073 (ncols + 2 * ima.border()) * sizeof(V), 00074 QImage::Format_RGB32); 00075 00076 return qima; 00077 } 00078 00079 00080 # if QT_VERSION >= 0x040400 00081 00082 template <typename I> 00083 inline 00084 QImage to_qimage_nocopy_rgb8(const Image<I>& ima_) 00085 { 00086 const I& ima = exact(ima_); 00087 mln_precondition(ima.is_valid()); 00088 00089 const int 00090 nrows = geom::nrows(ima), 00091 ncols = geom::ncols(ima); 00092 00093 typedef mln_value(I) V; 00094 QImage qima((uchar *)(&ima(ima.domain().pmin())), ncols, nrows, 00095 (ncols + 2 * ima.border()) * sizeof(V), 00096 QImage::Format_RGB888); 00097 00098 return qima; 00099 } 00100 00101 # endif 00102 00103 00104 } // end of namespace mln::convert::impl 00105 00106 00107 00108 00109 // Dispatch 00110 00111 namespace internal 00112 { 00113 00114 template <typename I> 00115 inline 00116 QImage to_qimage_nocopy_dispatch(const Image<I>& ima, 00117 const value::qt::rgb32&) 00118 { 00119 return impl::to_qimage_nocopy_qt_rgb32(ima); 00120 } 00121 00122 00123 # if QT_VERSION >= 0x040400 00124 00125 template <typename I> 00126 inline 00127 QImage to_qimage_nocopy_dispatch(const Image<I>& ima, 00128 const value::rgb8&) 00129 { 00130 return impl::to_qimage_nocopy_rgb8(ima); 00131 } 00132 00133 # endif 00134 00135 00136 template <typename I, typename V> 00137 inline 00138 QImage to_qimage_nocopy_dispatch(const Image<I>&, V&) 00139 { 00140 // Not supported yet! 00141 mlc_abort(I)::check(); 00142 return QImage(); 00143 } 00144 00145 00146 template <typename I> 00147 inline 00148 QImage to_qimage_nocopy_dispatch(const Image<I>& ima) 00149 { 00150 typedef mln_value(I) V; 00151 return to_qimage_nocopy_dispatch(ima, V()); 00152 } 00153 00154 } // end of namespace mln::convert::internal 00155 00156 00157 00158 // Facade 00159 00160 template <typename I> 00161 inline 00162 QImage to_qimage_nocopy(const Image<I>& ima_) 00163 { 00164 trace::entering("convert::to_qimage_nocopy"); 00165 00166 const I& ima = exact(ima_); 00167 mln_precondition(ima.is_valid()); 00168 00169 QImage output = internal::to_qimage_nocopy_dispatch(ima); 00170 00171 trace::exiting("convert::to_qimage_nocopy"); 00172 return output; 00173 } 00174 00175 00176 } // end of namespace mln::convert 00177 00178 } // end of namespace mln 00179 00180 #endif // ! MLN_CONVERT_TO_QIMAGE_NOCOPY_HH