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Diffstat (limited to 'src/boost/libs/gil/example/interleaved_ptr.cpp')
-rw-r--r-- | src/boost/libs/gil/example/interleaved_ptr.cpp | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/boost/libs/gil/example/interleaved_ptr.cpp b/src/boost/libs/gil/example/interleaved_ptr.cpp new file mode 100644 index 00000000..df80003b --- /dev/null +++ b/src/boost/libs/gil/example/interleaved_ptr.cpp @@ -0,0 +1,69 @@ +// +// 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; +} + + |