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-rw-r--r--src/boost/libs/gil/example/interleaved_ptr.cpp69
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+//
+// 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
+//
+#ifdef WIN32
+#define _CRT_SECURE_NO_DEPRECATE 1
+#pragma warning(disable : 4244) //
+#pragma warning(disable : 4996) // MSFT declared it deprecated
+#endif
+
+// Example file to demonstrate how to create a model of a pixel iterator
+
+// FIXME: Review and remove if possible: gcc doesn't compile unless we forward-declare at_c before we include gil...
+namespace boost { namespace gil {
+ template <typename ChannelReference, typename Layout> struct interleaved_ref;
+ template <typename ColorBase> struct element_reference_type;
+
+ template <int K, typename ChannelReference, typename Layout>
+ typename element_reference_type<interleaved_ref<ChannelReference,Layout>>::type
+ at_c(const interleaved_ref<ChannelReference,Layout>& p);
+} }
+
+#include <boost/gil.hpp>
+#include <boost/gil/extension/io/jpeg.hpp>
+
+#include <iostream>
+
+#include "interleaved_ptr.hpp"
+
+int main(int argc, char* argv[])
+{
+ using namespace boost::gil;
+
+ using rgb8_interleaved_ptr = interleaved_ptr<unsigned char*, rgb_layout_t>;
+ using rgb8c_interleaved_ptr = interleaved_ptr<unsigned char const*, rgb_layout_t>;
+
+ boost::function_requires<MutablePixelIteratorConcept<rgb8_interleaved_ptr>>();
+ boost::function_requires<PixelIteratorConcept<rgb8c_interleaved_ptr>>();
+ boost::function_requires<MemoryBasedIteratorConcept<memory_based_step_iterator<rgb8_interleaved_ptr>> >();
+
+ boost::function_requires<MutablePixelConcept<rgb8_interleaved_ptr::value_type>>();
+ boost::function_requires<PixelConcept<rgb8c_interleaved_ptr::value_type>>();
+
+ using rgb8_interleaved_view_t = type_from_x_iterator<rgb8_interleaved_ptr >::view_t;
+ using rgb8c_interleaved_view_t = type_from_x_iterator<rgb8c_interleaved_ptr>::view_t;
+
+ boost::function_requires<MutableImageViewConcept<rgb8_interleaved_view_t>>();
+ boost::function_requires<ImageViewConcept<rgb8c_interleaved_view_t>>();
+
+ rgb8_image_t img;
+ read_image("test.jpg", img, jpeg_tag{});
+
+ // Get a raw pointer to the RGB buffer
+ unsigned char* raw_ptr=&view(img)[0][0];
+
+ // Construct a view from it, without casting it to rgb8_pixel_t*
+ rgb8_interleaved_view_t src_view=interleaved_view(img.width(),img.height(),rgb8_interleaved_ptr(raw_ptr),
+ view(img).pixels().row_size());
+
+ // Apply view transformations and algorithms on it
+ write_view("out-interleaved_ptr.jpg",nth_channel_view(flipped_up_down_view(src_view),1), jpeg_tag{});
+
+ return 0;
+}
+
+