diff DEPENDENCIES/generic/include/boost/gil/pixel.hpp @ 16:2665513ce2d3

Add boost headers

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DEPENDENCIES/generic/include/boost/gil/pixel.hpp	Tue Aug 05 11:11:38 2014 +0100
@@ -0,0 +1,214 @@
+/*
+    Copyright 2005-2007 Adobe Systems Incorporated
+   
+    Use, modification and distribution are subject to the Boost Software License,
+    Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+    http://www.boost.org/LICENSE_1_0.txt).
+
+    See http://opensource.adobe.com/gil for most recent version including documentation.
+*/
+/*************************************************************************************************/
+
+#ifndef GIL_PIXEL_H
+#define GIL_PIXEL_H
+
+////////////////////////////////////////////////////////////////////////////////////////
+/// \file               
+/// \brief pixel class and related utilities
+/// \author Lubomir Bourdev and Hailin Jin \n
+///         Adobe Systems Incorporated
+/// \date   2005-2007 \n Last updated on September 28, 2006
+///
+////////////////////////////////////////////////////////////////////////////////////////
+
+#include <functional>
+#include <boost/utility/enable_if.hpp>
+#include <boost/mpl/bool.hpp>
+#include <boost/mpl/front.hpp>
+#include <boost/type_traits.hpp>
+#include "gil_config.hpp"
+#include "color_base.hpp"
+#include "gil_concept.hpp"
+#include "channel.hpp"
+#include "metafunctions.hpp"
+#include "utilities.hpp"
+#include "color_base_algorithm.hpp"
+
+namespace boost { namespace gil {
+
+// Forward-declare gray_t
+struct gray_color_t;
+typedef mpl::vector1<gray_color_t> gray_t;
+template <typename PixelBased> struct color_space_type;
+template <typename PixelBased> struct channel_mapping_type;
+template <typename PixelBased> struct channel_type;
+template <typename PixelBased> struct is_planar;
+
+template <typename PixelBased> struct color_space_type<const PixelBased> : public color_space_type<PixelBased> {};
+template <typename PixelBased> struct channel_mapping_type<const PixelBased> : public channel_mapping_type<PixelBased> {};
+template <typename PixelBased> struct channel_type<const PixelBased> : public channel_type<PixelBased> {};
+
+template <typename PixelBased> struct is_planar : mpl::false_ {};
+template <typename PixelBased> struct is_planar<const PixelBased> : public is_planar<PixelBased> {};
+
+
+template <typename T> struct is_pixel : public mpl::false_{};
+template <typename T> struct is_pixel<const T> : public is_pixel<T> {};
+
+/// \ingroup PixelBasedAlgorithm
+/// \brief Returns the number of channels of a pixel-based GIL construct
+template <typename PixelBased>
+struct num_channels : public mpl::size<typename color_space_type<PixelBased>::type> {}; 
+
+/**
+\addtogroup PixelBasedAlgorithm
+
+Example:
+\code
+BOOST_STATIC_ASSERT((num_channels<rgb8_view_t>::value==3));
+BOOST_STATIC_ASSERT((num_channels<cmyk16_planar_ptr_t>::value==4));
+
+BOOST_STATIC_ASSERT((is_planar<rgb16_planar_image_t>::value));
+BOOST_STATIC_ASSERT((is_same<color_space_type<rgb8_planar_ref_t>::type, rgb_t>::value));
+BOOST_STATIC_ASSERT((is_same<channel_mapping_type<cmyk8_pixel_t>::type, 
+                             channel_mapping_type<rgba8_pixel_t>::type>::value));
+BOOST_STATIC_ASSERT((is_same<channel_type<bgr8_pixel_t>::type, bits8>::value));
+\endcode
+*/
+
+/// \defgroup ColorBaseModelPixel pixel 
+/// \ingroup ColorBaseModel
+/// \brief A homogeneous color base whose element is a channel value. Models HomogeneousColorBaseValueConcept
+
+/// \defgroup PixelModelPixel pixel 
+/// \ingroup PixelModel
+/// \brief A homogeneous pixel value. Models HomogeneousPixelValueConcept
+
+/// \ingroup PixelModelPixel ColorBaseModelPixel PixelBasedModel
+/// \brief Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept, PixelValueConcept, HomogeneousPixelBasedConcept
+/// 
+/// A pixel is a set of channels defining the color at a given point in an image. Conceptually, a pixel is little more than a color base whose elements 
+/// model \p ChannelConcept. The class \p pixel defines a simple, homogeneous pixel value. It is used to store 
+/// the value of a color. The built-in C++ references to \p pixel, \p pixel& and \p const \p pixel& are used to represent a reference to a pixel
+/// inside an interleaved image view (a view in which all channels are together in memory). Similarly, built-in pointer types \p pixel* and \p const \p pixel*
+/// are used as the standard iterator over a row of interleaved homogeneous pixels. 
+///
+/// Since \p pixel inherits the properties of color base, assigning, equality comparison and copy-construcion are allowed between compatible pixels.
+/// This means that an 8-bit RGB pixel may be assigned to an 8-bit BGR pixel, or to an 8-bit planar reference. The channels are properly paired semantically.
+///
+/// The single-channel (grayscale) instantiation of the class pixel, (i.e. \p pixel<T,gray_layout_t>) is also convertible to/from a channel value.
+/// This allows grayscale pixels to be used in simpler expressions like *gray_pix1 = *gray_pix2  instead of more complicated at_c<0>(gray_pix1) = at_c<0>(gray_pix2)
+/// or get_color<gray_color_t>(gray_pix1) = get_color<gray_color_t>(gray_pix2)
+
+template <typename ChannelValue, typename Layout> // = mpl::range_c<int,0,ColorSpace::size> >
+struct pixel : public detail::homogeneous_color_base<ChannelValue,Layout,mpl::size<typename Layout::color_space_t>::value> {
+private:
+    typedef ChannelValue channel_t;
+    typedef detail::homogeneous_color_base<ChannelValue,Layout,mpl::size<typename Layout::color_space_t>::value> parent_t;
+public:
+    typedef pixel                               value_type;
+    typedef value_type&                         reference;
+    typedef const value_type&                   const_reference;
+    BOOST_STATIC_CONSTANT(bool,                 is_mutable = channel_traits<channel_t>::is_mutable);
+
+    pixel(){}
+    explicit pixel(channel_t v) : parent_t(v) {}  // sets all channels to v
+    pixel(channel_t v0, channel_t v1)                                                         : parent_t(v0,v1) {}
+    pixel(channel_t v0, channel_t v1, channel_t v2)                                           : parent_t(v0,v1,v2) {}
+    pixel(channel_t v0, channel_t v1, channel_t v2, channel_t v3)                             : parent_t(v0,v1,v2,v3) {}
+    pixel(channel_t v0, channel_t v1, channel_t v2, channel_t v3, channel_t v4)               : parent_t(v0,v1,v2,v3,v4) {}
+    pixel(channel_t v0, channel_t v1, channel_t v2, channel_t v3, channel_t v4, channel_t v5) : parent_t(v0,v1,v2,v3,v4,v5) {}
+
+    pixel(const pixel& p) : parent_t(p) {}
+    pixel&                       operator=(const pixel& p)       { static_copy(p,*this); return *this; }
+
+    // Construct from another compatible pixel type
+    template <typename Pixel>    pixel(const Pixel& p, typename enable_if_c<is_pixel<Pixel>::value>::type* dummy = 0) : parent_t(p) { 
+        check_compatible<Pixel>();
+    }   
+
+    template <typename P> pixel& operator=(const P& p)           { assign(p, mpl::bool_<is_pixel<P>::value>()); return *this; } 
+    template <typename P> bool   operator==(const P& p)    const { return equal(p, mpl::bool_<is_pixel<P>::value>()); } 
+
+    template <typename P> bool   operator!=(const P& p)    const { return !(*this==p); }
+
+    // homogeneous pixels have operator[]
+    typename channel_traits<channel_t>::reference       operator[](std::size_t i)       { return dynamic_at_c(*this,i); }
+    typename channel_traits<channel_t>::const_reference operator[](std::size_t i) const { return dynamic_at_c(*this,i); }
+private:
+    template <typename Pixel> void assign(const Pixel& p, mpl::true_)       { check_compatible<Pixel>(); static_copy(p,*this); } 
+    template <typename Pixel> bool  equal(const Pixel& p, mpl::true_) const { check_compatible<Pixel>(); return static_equal(*this,p); } 
+
+    template <typename Pixel> void check_compatible() const { gil_function_requires<PixelsCompatibleConcept<Pixel,pixel> >(); }
+
+// Support for assignment/equality comparison of a channel with a grayscale pixel
+
+private:
+    static void check_gray() {  BOOST_STATIC_ASSERT((is_same<typename Layout::color_space_t, gray_t>::value)); }
+    template <typename Channel> void assign(const Channel& chan, mpl::false_)       { check_gray(); gil::at_c<0>(*this)=chan; }
+    template <typename Channel> bool equal (const Channel& chan, mpl::false_) const { check_gray(); return gil::at_c<0>(*this)==chan; }
+public:
+    pixel&  operator= (channel_t chan)       { check_gray(); gil::at_c<0>(*this)=chan; return *this; }
+    bool    operator==(channel_t chan) const { check_gray(); return gil::at_c<0>(*this)==chan; }
+};
+
+/////////////////////////////
+//  ColorBasedConcept
+/////////////////////////////
+
+template <typename ChannelValue, typename Layout, int K>  
+struct kth_element_type<pixel<ChannelValue,Layout>, K> {
+    typedef ChannelValue type;
+};
+
+template <typename ChannelValue, typename Layout, int K>  
+struct kth_element_reference_type<pixel<ChannelValue,Layout>, K> {
+    typedef typename channel_traits<ChannelValue>::reference type;
+};
+
+template <typename ChannelValue, typename Layout, int K>  
+struct kth_element_reference_type<const pixel<ChannelValue,Layout>, K> {
+    typedef typename channel_traits<ChannelValue>::const_reference type;
+};
+
+template <typename ChannelValue, typename Layout, int K>  
+struct kth_element_const_reference_type<pixel<ChannelValue,Layout>, K> {
+    typedef typename channel_traits<ChannelValue>::const_reference type;
+};
+
+/////////////////////////////
+//  PixelConcept
+/////////////////////////////
+
+template <typename ChannelValue, typename Layout> 
+struct is_pixel<pixel<ChannelValue,Layout> > : public mpl::true_{};
+
+/////////////////////////////
+//  HomogeneousPixelBasedConcept
+/////////////////////////////
+
+template <typename ChannelValue, typename Layout>
+struct color_space_type<pixel<ChannelValue,Layout> > {
+    typedef typename Layout::color_space_t type;
+}; 
+
+template <typename ChannelValue, typename Layout>
+struct channel_mapping_type<pixel<ChannelValue,Layout> > {
+    typedef typename Layout::channel_mapping_t type;
+}; 
+
+template <typename ChannelValue, typename Layout>
+struct is_planar<pixel<ChannelValue,Layout> > : public mpl::false_ {};
+
+template <typename ChannelValue, typename Layout>
+struct channel_type<pixel<ChannelValue,Layout> > {
+    typedef ChannelValue type;
+}; 
+
+} }  // namespace boost::gil
+
+namespace boost {
+    template <typename ChannelValue, typename Layout> 
+    struct has_trivial_constructor<gil::pixel<ChannelValue,Layout> > : public has_trivial_constructor<ChannelValue> {};
+}
+#endif