348fd6942e
A typical user is supposed to include the main header and to not know the library enough to include headers selectively.
70 lines
2.6 KiB
C++
70 lines
2.6 KiB
C++
//
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// Copyright 2005-2007 Adobe Systems Incorporated
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//
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// Distributed under the Boost Software License, Version 1.0
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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#ifdef WIN32
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#define _CRT_SECURE_NO_DEPRECATE 1
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#pragma warning(disable : 4244) //
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#pragma warning(disable : 4996) // MSFT declared it deprecated
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#endif
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// Example file to demonstrate how to create a model of a pixel iterator
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// FIXME: Review and remove if possible: gcc doesn't compile unless we forward-declare at_c before we include gil...
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namespace boost { namespace gil {
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template <typename ChannelReference, typename Layout> struct interleaved_ref;
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template <typename ColorBase> struct element_reference_type;
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template <int K, typename ChannelReference, typename Layout>
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typename element_reference_type<interleaved_ref<ChannelReference,Layout>>::type
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at_c(const interleaved_ref<ChannelReference,Layout>& p);
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} }
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#include <boost/gil.hpp>
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#include <boost/gil/extension/io/jpeg.hpp>
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#include <iostream>
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#include "interleaved_ptr.hpp"
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int main(int argc, char* argv[])
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{
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using namespace boost::gil;
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using rgb8_interleaved_ptr = interleaved_ptr<unsigned char*, rgb_layout_t>;
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using rgb8c_interleaved_ptr = interleaved_ptr<unsigned char const*, rgb_layout_t>;
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boost::function_requires<MutablePixelIteratorConcept<rgb8_interleaved_ptr>>();
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boost::function_requires<PixelIteratorConcept<rgb8c_interleaved_ptr>>();
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boost::function_requires<MemoryBasedIteratorConcept<memory_based_step_iterator<rgb8_interleaved_ptr>> >();
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boost::function_requires<MutablePixelConcept<rgb8_interleaved_ptr::value_type>>();
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boost::function_requires<PixelConcept<rgb8c_interleaved_ptr::value_type>>();
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using rgb8_interleaved_view_t = type_from_x_iterator<rgb8_interleaved_ptr >::view_t;
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using rgb8c_interleaved_view_t = type_from_x_iterator<rgb8c_interleaved_ptr>::view_t;
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boost::function_requires<MutableImageViewConcept<rgb8_interleaved_view_t>>();
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boost::function_requires<ImageViewConcept<rgb8c_interleaved_view_t>>();
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rgb8_image_t img;
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read_image("test.jpg", img, jpeg_tag{});
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// Get a raw pointer to the RGB buffer
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unsigned char* raw_ptr=&view(img)[0][0];
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// Construct a view from it, without casting it to rgb8_pixel_t*
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rgb8_interleaved_view_t src_view=interleaved_view(img.width(),img.height(),rgb8_interleaved_ptr(raw_ptr),
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view(img).pixels().row_size());
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// Apply view transformations and algorithms on it
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write_view("out-interleaved_ptr.jpg",nth_channel_view(flipped_up_down_view(src_view),1), jpeg_tag{});
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return 0;
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}
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