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1 /*
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2 Copyright 2005-2007 Adobe Systems Incorporated
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3
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4 Use, modification and distribution are subject to the Boost Software License,
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5 Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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6 http://www.boost.org/LICENSE_1_0.txt).
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7
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8 See http://opensource.adobe.com/gil for most recent version including documentation.
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9 */
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10 /*************************************************************************************************/
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11
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12 #ifndef GIL_RGBA_H
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13 #define GIL_RGBA_H
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14
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15 ////////////////////////////////////////////////////////////////////////////////////////
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16 /// \file
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17 /// \brief Support for RGBA color space and variants
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18 /// \author Lubomir Bourdev and Hailin Jin \n
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19 /// Adobe Systems Incorporated
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20 /// \date 2005-2007 \n Last updated on October 10, 2007
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21 ////////////////////////////////////////////////////////////////////////////////////////
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22
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23 #include <cstddef>
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24 #include "gil_config.hpp"
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25 #include <boost/mpl/contains.hpp>
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26 #include "rgb.hpp"
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27 #include "planar_pixel_iterator.hpp"
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28
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29 namespace boost { namespace gil {
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30
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31 /// \ingroup ColorNameModel
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32 /// \brief Alpha
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33 struct alpha_t {};
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34
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35 /// \ingroup ColorSpaceModel
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36 typedef mpl::vector4<red_t,green_t,blue_t,alpha_t> rgba_t;
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37
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38 /// \ingroup LayoutModel
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39 typedef layout<rgba_t> rgba_layout_t;
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40 /// \ingroup LayoutModel
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41 typedef layout<rgba_t, mpl::vector4_c<int,2,1,0,3> > bgra_layout_t;
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42 /// \ingroup LayoutModel
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43 typedef layout<rgba_t, mpl::vector4_c<int,1,2,3,0> > argb_layout_t;
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44 /// \ingroup LayoutModel
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45 typedef layout<rgba_t, mpl::vector4_c<int,3,2,1,0> > abgr_layout_t;
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46
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47 /// \ingroup ImageViewConstructors
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48 /// \brief from raw RGBA planar data
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49 template <typename IC>
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50 inline
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51 typename type_from_x_iterator<planar_pixel_iterator<IC,rgba_t> >::view_t
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52 planar_rgba_view(std::size_t width, std::size_t height,
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53 IC r, IC g, IC b, IC a,
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54 std::ptrdiff_t rowsize_in_bytes) {
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55 typedef typename type_from_x_iterator<planar_pixel_iterator<IC,rgba_t> >::view_t RView;
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56 return RView(width, height,
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57 typename RView::locator(planar_pixel_iterator<IC,rgba_t>(r,g,b,a),
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58 rowsize_in_bytes));
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59 }
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60
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61 } } // namespace boost::gil
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62
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63 #endif
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