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63 lines
2.5 KiB
C++
63 lines
2.5 KiB
C++
/// \file
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/// \brief Example file to demonstrate how to create a model of a pixel iterator
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/// \author Lubomir Bourdev and Hailin Jin
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/// \date February 27, 2007
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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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// 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 <iostream>
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#include <boost/gil/extension/io/jpeg_dynamic_io.hpp>
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#include "interleaved_ptr.hpp"
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int main(int argc, unsigned char* argv[])
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{
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using namespace boost::gil;
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typedef interleaved_ptr<unsigned char*, rgb_layout_t> rgb8_interleaved_ptr;
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typedef interleaved_ptr<const unsigned char*, rgb_layout_t> rgb8c_interleaved_ptr;
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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<ByteAdvanceableIteratorConcept<byte_addressable_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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typedef type_from_x_iterator<rgb8_interleaved_ptr >::view_t rgb8_interleaved_view_t;
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typedef type_from_x_iterator<rgb8c_interleaved_ptr>::view_t rgb8c_interleaved_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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jpeg_read_image("test.jpg", img);
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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_bytes());
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// Apply view transformations and algorithms on it
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jpeg_write_view("out-interleaved_ptr.jpg",nth_channel_view(flipped_up_down_view(src_view),1));
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return 0;
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}
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