FM / gil

/usr/include/boost/gil

Name	Size	Mode	Actions
concepts/	-	0755	rm
detail/	-	0755	rm
extension/	-	0755	rm
image_processing/	-	0755	rm
io/	-	0755	rm
algorithm.hpp	41333	0644	edit dl rm
bit_aligned_pixel_iterator.hpp	9200	0644	edit dl rm
bit_aligned_pixel_reference.hpp	14096	0644	edit dl rm
channel.hpp	29913	0644	edit dl rm
channel_algorithm.hpp	23081	0644	edit dl rm
cmyk.hpp	1296	0644	edit dl rm
color_base.hpp	22010	0644	edit dl rm
color_base_algorithm.hpp	29889	0644	edit dl rm
color_convert.hpp	13851	0644	edit dl rm
concepts.hpp	897	0644	edit dl rm
deprecated.hpp	2477	0644	edit dl rm
device_n.hpp	3591	0644	edit dl rm
dynamic_step.hpp	893	0644	edit dl rm
gray.hpp	619	0644	edit dl rm
image.hpp	20452	0644	edit dl rm
image_view.hpp	14046	0644	edit dl rm
image_view_factory.hpp	24625	0644	edit dl rm
iterator_from_2d.hpp	6648	0644	edit dl rm
locator.hpp	18786	0644	edit dl rm
metafunctions.hpp	31186	0644	edit dl rm
packed_pixel.hpp	9214	0644	edit dl rm
pixel.hpp	9866	0644	edit dl rm
pixel_iterator.hpp	5307	0644	edit dl rm
pixel_iterator_adaptor.hpp	9071	0644	edit dl rm
planar_pixel_iterator.hpp	10059	0644	edit dl rm
planar_pixel_reference.hpp	9916	0644	edit dl rm
point.hpp	6899	0644	edit dl rm
position_iterator.hpp	5005	0644	edit dl rm
premultiply.hpp	3521	0644	edit dl rm
promote_integral.hpp	6185	0644	edit dl rm
rgb.hpp	1458	0644	edit dl rm
rgba.hpp	1674	0644	edit dl rm
step_iterator.hpp	14226	0644	edit dl rm
typedefs.hpp	13415	0644	edit dl rm
utilities.hpp	8161	0644	edit dl rm
virtual_locator.hpp	6288	0644	edit dl rm

Edit: /usr/include/boost/gil/pixel_iterator.hpp (5307B)

//
// Copyright 2005-2007 Adobe Systems Incorporated
//
// Distributed under 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
//
#ifndef BOOST_GIL_PIXEL_ITERATOR_HPP
#define BOOST_GIL_PIXEL_ITERATOR_HPP

#include <boost/gil/concepts.hpp>
#include <boost/gil/dynamic_step.hpp>
#include <boost/gil/utilities.hpp>
#include <boost/gil/pixel.hpp>

#include <iterator>
#include <type_traits>

namespace boost { namespace gil {

//forwarded declaration (as this file is included in step_iterator.hpp)
template <typename Iterator>
class memory_based_step_iterator;

/// \brief metafunction predicate determining whether the given iterator is a plain one or an adaptor over another iterator.
/// Examples of adaptors are the step iterator and the dereference iterator adaptor.
template <typename It>
struct is_iterator_adaptor : public std::false_type {};

/// \brief returns the base iterator for a given iterator adaptor. Provide an specialization when introducing new iterator adaptors
template <typename It>
struct iterator_adaptor_get_base;

/// \brief Changes the base iterator of an iterator adaptor. Provide an specialization when introducing new iterator adaptors
template <typename It, typename NewBaseIt>
struct iterator_adaptor_rebind;

/// \brief Returns the type of an iterator just like the input iterator, except operating over immutable values
template <typename It>
struct const_iterator_type;

// The default implementation when the iterator is a C pointer is to use the standard constness semantics
template <typename T> struct const_iterator_type<T*>       { using type = T const*; };
template <typename T> struct const_iterator_type<T const*> { using type = T const*; };

/// \brief Metafunction predicate returning whether the given iterator allows for changing its values
/// \ingroup GILIsMutable
template <typename It>
struct iterator_is_mutable{};

// The default implementation when the iterator is a C pointer is to use the standard constness semantics
template <typename T>
struct iterator_is_mutable<T*> : std::true_type {};

template <typename T>
struct iterator_is_mutable<T const*> : std::false_type {};

/// \defgroup PixelIteratorModelInterleavedPtr C pointer to a pixel
/// \ingroup PixelIteratorModel
/// \brief Iterators over interleaved pixels.
/// A C pointer to a model of PixelValueConcept is used as an iterator over interleaved pixels. Models PixelIteratorConcept, HomogeneousPixelBasedConcept, HasDynamicXStepTypeConcept, MemoryBasedIteratorConcept

/////////////////////////////
//  HasDynamicXStepTypeConcept
/////////////////////////////

/// \ingroup PixelIteratorModelInterleavedPtr
template <typename Pixel>
struct dynamic_x_step_type<Pixel*> {
    using type = memory_based_step_iterator<Pixel *>;
};

/// \ingroup PixelIteratorModelInterleavedPtr
template <typename Pixel>
struct dynamic_x_step_type<const Pixel*> {
    using type = memory_based_step_iterator<const Pixel *>;
};

/////////////////////////////
//  PixelBasedConcept
/////////////////////////////

template <typename Pixel>
struct color_space_type<Pixel*> : color_space_type<Pixel> {};

template <typename Pixel>
struct color_space_type<Pixel const*> : color_space_type<Pixel> {};

template <typename Pixel>
struct channel_mapping_type<Pixel*> : channel_mapping_type<Pixel> {};

template <typename Pixel>
struct channel_mapping_type<Pixel const*> : channel_mapping_type<Pixel> {};

template <typename Pixel>
struct is_planar<Pixel*> : is_planar<Pixel> {};

template <typename Pixel>
struct is_planar<Pixel const*> : is_planar<Pixel> {};

/////////////////////////////
//  HomogeneousPixelBasedConcept
/////////////////////////////

template <typename Pixel>
struct channel_type<Pixel*> : channel_type<Pixel> {};

template <typename Pixel>
struct channel_type<Pixel const*> : channel_type<Pixel> {};

////////////////////////////////////////////////////////////////////////////////////////
/// Support for pixel iterator movement measured in memory units (bytes or bits) as opposed to pixel type.
/// Necessary to handle image row alignment and channel plane alignment.
////////////////////////////////////////////////////////////////////////////////////////

/////////////////////////////
//  MemoryBasedIteratorConcept
/////////////////////////////

template <typename T>
struct byte_to_memunit : std::integral_constant<int, 1> {};

template <typename P>
inline std::ptrdiff_t memunit_step(P const*) { return sizeof(P); }

template <typename P>
inline std::ptrdiff_t memunit_distance(P const* p1, P const* p2)
{
    return (
        gil_reinterpret_cast_c<unsigned char const*>(p2) -
        gil_reinterpret_cast_c<unsigned char const*>(p1));
}

template <typename P>
inline void memunit_advance(P* &p, std::ptrdiff_t diff)
{
    p = (P*)((unsigned char*)(p)+diff);
}

template <typename P>
inline P* memunit_advanced(const P* p, std::ptrdiff_t diff)
{
    return (P*)((char*)(p)+diff);
}

//  memunit_advanced_ref
//  (shortcut to advancing a pointer by a given number of memunits and taking the reference in case the compiler is not smart enough)

template <typename P>
inline P& memunit_advanced_ref(P* p, std::ptrdiff_t diff) {
    return *memunit_advanced(p,diff);
}

} }  // namespace boost::gil

#endif

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