WIP. Scale cover art option. Seems to work
This commit is contained in:
emeric
@@ -0,0 +1,782 @@
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/*
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Copyright 2007-2008 Christian Henning, Lubomir Bourdev
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Use, modification and distribution are subject to the Boost Software License,
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Version 1.0. (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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/*************************************************************************************************/
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#ifndef BOOST_GIL_EXTENSION_IO_TIFF_IO_READ_HPP
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#define BOOST_GIL_EXTENSION_IO_TIFF_IO_READ_HPP
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////////////////////////////////////////////////////////////////////////////////////////
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/// \file
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/// \brief
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/// \author Christian Henning, Lubomir Bourdev \n
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///
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/// \date 2007-2008 \n
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///
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////////////////////////////////////////////////////////////////////////////////////////
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extern "C" {
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#include "tiff.h"
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#include "tiffio.h"
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}
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#include <algorithm>
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#include <string>
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#include <vector>
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#include <boost/static_assert.hpp>
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#include <boost/gil/extension/io_new/detail/base.hpp>
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#include <boost/gil/extension/io_new/detail/conversion_policies.hpp>
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#include <boost/gil/extension/io_new/detail/bit_operations.hpp>
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#include <boost/gil/extension/io_new/detail/row_buffer_helper.hpp>
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#include <boost/gil/extension/io_new/detail/io_device.hpp>
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#include <boost/gil/extension/io_new/detail/reader_base.hpp>
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#include "device.hpp"
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#include "is_allowed.hpp"
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namespace boost { namespace gil { namespace detail {
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template < int K >
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struct plane_recursion
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{
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template< typename View
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, typename Device
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, typename ConversionPolicy
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>
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static
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void read_plane( const View& dst_view
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, reader< Device
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, tiff_tag
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, ConversionPolicy >* p
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)
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{
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typedef typename kth_channel_view_type< K, View >::type plane_t;
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plane_t plane = kth_channel_view<K>( dst_view );
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p->template read_data< row_buffer_helper_view< plane_t > >( plane, K );
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plane_recursion< K - 1 >::read_plane( dst_view, p );
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}
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};
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template <>
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struct plane_recursion< -1 >
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{
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template< typename View
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, typename Device
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, typename ConversionPolicy
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>
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static
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void read_plane( const View& /* dst_view */
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, reader< Device
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, tiff_tag
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, ConversionPolicy
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>* /* p */
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)
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{}
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};
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template< typename Device
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, typename ConversionPolicy
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>
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class reader< Device
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, tiff_tag
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, ConversionPolicy
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>
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: public reader_base< tiff_tag
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, ConversionPolicy >
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{
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public:
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reader( Device& device
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, const image_read_settings< tiff_tag >& settings
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)
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: reader_base< tiff_tag
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, ConversionPolicy
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>( settings )
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, _io_dev( device )
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{
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init_multipage_read( settings );
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}
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reader( Device& device
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, const typename ConversionPolicy::color_converter_type& cc
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, const image_read_settings< tiff_tag >& settings
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)
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: reader_base< tiff_tag
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, ConversionPolicy
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>( cc
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, settings
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)
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, _io_dev( device )
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{
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init_multipage_read( settings );
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}
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image_read_info<tiff_tag> get_info() const
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{
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image_read_info<tiff_tag> info;
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io_error_if( _io_dev.template get_property<tiff_image_width> ( info._width ) == false
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, "cannot read tiff tag." );
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io_error_if( _io_dev.template get_property<tiff_image_height> ( info._height ) == false
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, "cannot read tiff tag." );
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io_error_if( _io_dev.template get_property<tiff_compression> ( info._compression ) == false
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, "cannot read tiff tag." );
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io_error_if( _io_dev.template get_property<tiff_samples_per_pixel> ( info._samples_per_pixel ) == false
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, "cannot read tiff tag." );
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io_error_if( _io_dev.template get_property<tiff_bits_per_sample> ( info._bits_per_sample ) == false
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, "cannot read tiff tag." );
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io_error_if( _io_dev.template get_property<tiff_sample_format> ( info._sample_format ) == false
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, "cannot read tiff tag." );
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io_error_if( _io_dev.template get_property<tiff_planar_configuration> ( info._planar_configuration ) == false
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, "cannot read tiff tag." );
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io_error_if( _io_dev.template get_property<tiff_photometric_interpretation>( info._photometric_interpretation ) == false
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, "cannot read tiff tag." );
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info._is_tiled = false;
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// Tile tags
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if( _io_dev.is_tiled() )
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{
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info._is_tiled = true;
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io_error_if( !_io_dev.template get_property< tiff_tile_width >( info._tile_width )
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, "cannot read tiff_tile_width tag." );
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io_error_if( !_io_dev.template get_property< tiff_tile_length >( info._tile_length )
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, "cannot read tiff_tile_length tag." );
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}
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return info;
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}
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// only works for homogeneous image types
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template< typename View >
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void apply( View& dst_view )
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{
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if( this->_info._photometric_interpretation == PHOTOMETRIC_PALETTE )
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{
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// Steps:
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// 1. Read indices. It's an array of grayX_pixel_t.
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// 2. Read palette. It's an array of rgb16_pixel_t.
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// 3. ??? Create virtual image or transform the two arrays
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// into a rgb16_image_t object. The latter might
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// be a good first solution.
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switch( this->_info._bits_per_sample )
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{
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case 1: { read_palette_image< gray1_image_t >( dst_view ); break; }
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case 2: { read_palette_image< gray2_image_t >( dst_view ); break; }
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case 4: { read_palette_image< gray4_image_t >( dst_view ); break; }
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case 8: { read_palette_image< gray8_image_t >( dst_view ); break; }
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case 16: { read_palette_image< gray16_image_t >( dst_view ); break; }
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default: { io_error( "Not supported palette " ); }
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}
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return;
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}
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else
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{
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// In case we only read the image the user's type and
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// the tiff type need to compatible. Which means:
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// color_spaces_are_compatible && channels_are_pairwise_compatible
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typedef typename is_same< ConversionPolicy
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, read_and_no_convert
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>::type is_read_only;
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io_error_if( !is_allowed< View >( this->_info
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, is_read_only()
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)
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, "Image types aren't compatible."
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);
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if( this->_info._planar_configuration == PLANARCONFIG_SEPARATE )
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{
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plane_recursion< num_channels< View >::value - 1 >::read_plane( dst_view
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, this
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);
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}
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else if( this->_info._planar_configuration == PLANARCONFIG_CONTIG )
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{
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if( is_read_only::value == false )
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{
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// the read_data function needs to know what gil type the source image is
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// to have the default color converter function correctly
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switch( this->_info._photometric_interpretation )
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{
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case PHOTOMETRIC_MINISWHITE:
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case PHOTOMETRIC_MINISBLACK:
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{
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switch( this->_info._bits_per_sample )
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{
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case 1: { read_data< row_buffer_helper_view< gray1_image_t::view_t > >( dst_view, 0 ); break; }
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case 2: { read_data< row_buffer_helper_view< gray2_image_t::view_t > >( dst_view, 0 ); break; }
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case 4: { read_data< row_buffer_helper_view< gray4_image_t::view_t > >( dst_view, 0 ); break; }
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case 8: { read_data< row_buffer_helper_view< gray8_view_t > >( dst_view, 0 ); break; }
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case 16: { read_data< row_buffer_helper_view< gray16_view_t > >( dst_view, 0 ); break; }
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case 32: { read_data< row_buffer_helper_view< gray32_view_t > >( dst_view, 0 ); break; }
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}
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break;
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}
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case PHOTOMETRIC_RGB:
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{
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switch( this->_info._bits_per_sample )
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{
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case 8: { read_data< row_buffer_helper_view< rgb8_view_t > >( dst_view, 0 ); break; }
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case 16: { read_data< row_buffer_helper_view< rgb16_view_t > >( dst_view, 0 ); break; }
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case 32: { read_data< row_buffer_helper_view< rgb32_view_t > >( dst_view, 0 ); break; }
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}
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break;
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}
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case PHOTOMETRIC_SEPARATED: // CYMK
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{
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switch( this->_info._bits_per_sample )
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{
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case 8: { read_data< row_buffer_helper_view< cmyk8_view_t > >( dst_view, 0 ); break; }
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case 16: { read_data< row_buffer_helper_view< cmyk16_view_t > >( dst_view, 0 ); break; }
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case 32: { read_data< row_buffer_helper_view< cmyk32_view_t > >( dst_view, 0 ); break; }
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}
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break;
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}
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default: { io_error( "Not supported colorspace " ); }
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}
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}
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else
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{
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read_data< row_buffer_helper_view< View > >( dst_view, 0 );
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}
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}
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else
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{
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io_error( "Wrong planar configuration setting." );
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}
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}
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}
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private:
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void init_multipage_read( const image_read_settings< tiff_tag >& settings )
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{
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if( settings._directory > 0 )
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{
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_io_dev.set_directory( settings._directory );
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}
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}
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template< typename PaletteImage
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, typename View
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>
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void read_palette_image( const View& dst_view )
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{
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PaletteImage indices( this->_info._width - this->_settings._top_left.x
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, this->_info._height - this->_settings._top_left.y );
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// read the palette first
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read_data< row_buffer_helper_view< typename PaletteImage::view_t > >( view( indices ), 0 );
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read_palette_image( dst_view
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, view( indices )
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, typename is_same< View, rgb16_view_t >::type() );
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}
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template< typename View
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, typename Indices_View
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>
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void read_palette_image( const View& dst_view
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, const Indices_View& indices_view
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, mpl::true_ // is View rgb16_view_t
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)
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{
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tiff_color_map::red_t red = NULL;
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tiff_color_map::green_t green = NULL;
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tiff_color_map::blue_t blue = NULL;
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_io_dev.get_field_defaulted( red, green, blue );
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typedef typename channel_traits<
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typename element_type<
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typename Indices_View::value_type >::type >::value_type channel_t;
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int num_colors = channel_traits< channel_t >::max_value();
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rgb16_planar_view_t palette = planar_rgb_view( num_colors
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, 1
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, red
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, green
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, blue
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, sizeof( bits16 ) * num_colors );
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typename rgb16_planar_view_t::x_iterator palette_it = palette.row_begin( 0 );
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for( typename rgb16_view_t::y_coord_t y = 0; y < dst_view.height(); ++y )
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{
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typename rgb16_view_t::x_iterator it = dst_view.row_begin( y );
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typename rgb16_view_t::x_iterator end = dst_view.row_end( y );
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typename Indices_View::x_iterator indices_it = indices_view.row_begin( y );
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for( ; it != end; ++it, ++indices_it )
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{
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bits16 i = gil::at_c<0>( *indices_it );
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*it = palette[i];
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}
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}
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}
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template< typename View
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, typename Indices_View
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>
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inline
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void read_palette_image( const View& /* dst_view */
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, const Indices_View& /* indices_view */
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, mpl::false_ // is View rgb16_view_t
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)
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{
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io_error( "User supplied image type must be rgb16_image_t." );
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}
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template< typename Buffer >
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void skip_over_rows( Buffer& buffer
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, int plane
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)
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{
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if( this->_info._compression != COMPRESSION_NONE )
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{
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// Skipping over rows is not possible for compressed images( no random access ). See man
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// page ( diagnostics section ) for more information.
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for( std::ptrdiff_t row = 0; row < this->_settings._top_left.y; ++row )
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{
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_io_dev.read_scanline( buffer
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, row
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, static_cast< tsample_t >( plane ));
|
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}
|
||||
}
|
||||
}
|
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|
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template< typename Buffer
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, typename View
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>
|
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void read_data( const View& dst_view
|
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, int plane )
|
||||
{
|
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if( _io_dev.is_tiled() )
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||||
{
|
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read_tiled_data< Buffer >( dst_view, 0 );
|
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}
|
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else
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{
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read_stripped_data< Buffer >( dst_view, 0 );
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}
|
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}
|
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|
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|
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template< typename Buffer
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||||
, typename View
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>
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void read_tiled_data( const View& dst_view
|
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, int plane
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)
|
||||
{
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if( dst_view.width() != this->_info._width
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|| dst_view.height() != this->_info._height
|
||||
)
|
||||
{
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// read a subimage
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read_tiled_data_subimage< Buffer >( dst_view, plane );
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}
|
||||
else
|
||||
{
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||||
// read full image
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||||
read_tiled_data_full< Buffer >( dst_view, plane );
|
||||
}
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||||
}
|
||||
|
||||
template< typename Buffer
|
||||
, typename View
|
||||
>
|
||||
void read_tiled_data_subimage( const View& dst_view
|
||||
, int plane
|
||||
)
|
||||
{
|
||||
///@todo: why is
|
||||
/// typedef Buffer row_buffer_helper_t;
|
||||
/// not working? I get compiler error with MSVC10.
|
||||
/// read_stripped_data IS working.
|
||||
typedef row_buffer_helper_view< View > row_buffer_helper_t;
|
||||
|
||||
typedef typename row_buffer_helper_t::buffer_t buffer_t;
|
||||
typedef typename row_buffer_helper_t::iterator_t it_t;
|
||||
|
||||
tiff_image_width::type image_width = this->_info._width;
|
||||
tiff_image_height::type image_height = this->_info._height;
|
||||
|
||||
tiff_tile_width::type tile_width = this->_info._tile_width;
|
||||
tiff_tile_length::type tile_height = this->_info._tile_length;
|
||||
|
||||
std::ptrdiff_t subimage_x = this->_settings._top_left.x;
|
||||
std::ptrdiff_t subimage_y = this->_settings._top_left.y;
|
||||
|
||||
std::ptrdiff_t subimage_width = this->_settings._dim.x;
|
||||
std::ptrdiff_t subimage_height = this->_settings._dim.y;
|
||||
|
||||
row_buffer_helper_t row_buffer_helper( _io_dev.get_tile_size(), true );
|
||||
|
||||
mirror_bits< buffer_t
|
||||
, typename is_bit_aligned< typename View::value_type >::type
|
||||
> mirror_bits( _io_dev.are_bytes_swapped() );
|
||||
|
||||
for( unsigned int y = 0; y < image_height; y += tile_height )
|
||||
{
|
||||
for( unsigned int x = 0; x < image_width; x += tile_width )
|
||||
{
|
||||
uint32_t current_tile_width = ( x + tile_width < image_width ) ? tile_width : image_width - x;
|
||||
uint32_t current_tile_length = ( y + tile_height < image_height ) ? tile_height : image_height - y;
|
||||
|
||||
_io_dev.read_tile( row_buffer_helper.buffer()
|
||||
, x
|
||||
, y
|
||||
, 0
|
||||
, static_cast< tsample_t >( plane )
|
||||
);
|
||||
|
||||
mirror_bits( row_buffer_helper.buffer() );
|
||||
|
||||
// these are all whole image coordinates
|
||||
point_t tile_top_left ( x, y );
|
||||
point_t tile_lower_right( x + current_tile_width - 1, y + current_tile_length - 1 );
|
||||
|
||||
point_t view_top_left ( subimage_x, subimage_y );
|
||||
point_t view_lower_right( subimage_x + subimage_width - 1
|
||||
, subimage_y + subimage_height - 1 );
|
||||
|
||||
if( tile_top_left.x > view_lower_right.x
|
||||
|| tile_top_left.y > view_lower_right.y
|
||||
|| tile_lower_right.x < view_top_left.x
|
||||
|| tile_lower_right.y < view_top_left.y
|
||||
)
|
||||
{
|
||||
// current tile and dst_view do not overlap
|
||||
continue;
|
||||
}
|
||||
else
|
||||
{
|
||||
// dst_view is overlapping the current tile
|
||||
|
||||
// next is to define the portion in the tile that needs to be copied
|
||||
|
||||
// get the whole image coordinates
|
||||
std::ptrdiff_t img_x0 = ( tile_top_left.x >= view_top_left.x ) ? tile_top_left.x : view_top_left.x;
|
||||
std::ptrdiff_t img_y0 = ( tile_top_left.y >= view_top_left.y ) ? tile_top_left.y : view_top_left.y;
|
||||
|
||||
std::ptrdiff_t img_x1 = ( tile_lower_right.x <= view_lower_right.x ) ? tile_lower_right.x : view_lower_right.x;
|
||||
std::ptrdiff_t img_y1 = ( tile_lower_right.y <= view_lower_right.y ) ? tile_lower_right.y : view_lower_right.y;
|
||||
|
||||
// convert to tile coordinates
|
||||
std::ptrdiff_t tile_x0 = img_x0 - x;
|
||||
std::ptrdiff_t tile_y0 = img_y0 - y;
|
||||
std::ptrdiff_t tile_x1 = img_x1 - x;
|
||||
std::ptrdiff_t tile_y1 = img_y1 - y;
|
||||
|
||||
assert( tile_x0 >= 0 && tile_y0 >= 0 && tile_x1 >= 0 && tile_y1 >= 0 );
|
||||
assert( tile_x0 <= img_x1 && tile_y0 <= img_y1 );
|
||||
assert( tile_x0 < tile_width && tile_y0 < tile_height && tile_x1 < tile_width && tile_y1 < tile_height );
|
||||
|
||||
std::ptrdiff_t tile_subimage_view_width = tile_x1 - tile_x0 + 1;
|
||||
std::ptrdiff_t tile_subimage_view_height = tile_y1 - tile_y0 + 1;
|
||||
|
||||
// convert to dst_view coordinates
|
||||
std::ptrdiff_t dst_x0 = img_x0 - subimage_x;
|
||||
std::ptrdiff_t dst_y0 = img_y0 - subimage_y;
|
||||
assert( dst_x0 >= 0 && dst_y0 >= 0 );
|
||||
|
||||
View dst_subimage_view = subimage_view( dst_view
|
||||
, (int) dst_x0
|
||||
, (int) dst_y0
|
||||
, (int) tile_subimage_view_width
|
||||
, (int) tile_subimage_view_height
|
||||
);
|
||||
|
||||
// the row_buffer is a 1D array which represents a 2D image. We cannot
|
||||
// use interleaved_view here, since row_buffer could be bit_aligned.
|
||||
// Interleaved_view's fourth parameter "rowsize_in_bytes" doesn't work
|
||||
// for bit_aligned pixels.
|
||||
|
||||
for( std::ptrdiff_t dst_row = 0; dst_row < dst_subimage_view.height(); ++dst_row )
|
||||
{
|
||||
std::ptrdiff_t tile_row = dst_row + tile_y0;
|
||||
|
||||
// jump to the beginning of the current tile row
|
||||
it_t begin = row_buffer_helper.begin() + tile_row * tile_width;
|
||||
|
||||
begin += tile_x0;
|
||||
it_t end = begin + dst_subimage_view.width();
|
||||
|
||||
this->_cc_policy.read( begin
|
||||
, end
|
||||
, dst_subimage_view.row_begin( dst_row )
|
||||
);
|
||||
} //for
|
||||
}
|
||||
} // for
|
||||
} // for
|
||||
}
|
||||
|
||||
template< typename Buffer
|
||||
, typename View
|
||||
>
|
||||
void read_tiled_data_full( const View& dst_view
|
||||
, int plane
|
||||
)
|
||||
{
|
||||
///@todo: why is
|
||||
/// typedef Buffer row_buffer_helper_t;
|
||||
/// not working? I get compiler error with MSVC10.
|
||||
/// read_stripped_data IS working.
|
||||
typedef row_buffer_helper_view< View > row_buffer_helper_t;
|
||||
|
||||
typedef typename row_buffer_helper_t::buffer_t buffer_t;
|
||||
typedef typename row_buffer_helper_t::iterator_t it_t;
|
||||
|
||||
tiff_image_width::type image_width = this->_info._width;
|
||||
tiff_image_height::type image_height = this->_info._height;
|
||||
|
||||
tiff_tile_width::type tile_width = this->_info._tile_width;
|
||||
tiff_tile_length::type tile_height = this->_info._tile_length;
|
||||
|
||||
row_buffer_helper_t row_buffer_helper( _io_dev.get_tile_size(), true );
|
||||
|
||||
mirror_bits< buffer_t
|
||||
, typename is_bit_aligned< typename View::value_type >::type
|
||||
> mirror_bits( _io_dev.are_bytes_swapped() );
|
||||
|
||||
for( unsigned int y = 0; y < image_height; y += tile_height )
|
||||
{
|
||||
for( unsigned int x = 0; x < image_width; x += tile_width )
|
||||
{
|
||||
uint32_t current_tile_width = ( x + tile_width < image_width ) ? tile_width : image_width - x;
|
||||
uint32_t current_tile_length = ( y + tile_height < image_height ) ? tile_height : image_height - y;
|
||||
|
||||
_io_dev.read_tile( row_buffer_helper.buffer()
|
||||
, x
|
||||
, y
|
||||
, 0
|
||||
, static_cast< tsample_t >( plane )
|
||||
);
|
||||
|
||||
mirror_bits( row_buffer_helper.buffer() );
|
||||
|
||||
View dst_subimage_view = subimage_view( dst_view
|
||||
, x
|
||||
, y
|
||||
, current_tile_width
|
||||
, current_tile_length
|
||||
);
|
||||
|
||||
// the row_buffer is a 1D array which represents a 2D image. We cannot
|
||||
// use interleaved_view here, since row_buffer could be bit_aligned.
|
||||
// Interleaved_view's fourth parameter "rowsize_in_bytes" doesn't work
|
||||
// for bit_aligned pixels.
|
||||
|
||||
for( int row = 0; row < dst_subimage_view.height(); ++row )
|
||||
{
|
||||
it_t begin = row_buffer_helper.begin() + row * tile_width;
|
||||
it_t end = begin + dst_subimage_view.width();
|
||||
|
||||
this->_cc_policy.read( begin
|
||||
, end
|
||||
, dst_subimage_view.row_begin( row )
|
||||
);
|
||||
} //for
|
||||
} // for
|
||||
} // for
|
||||
}
|
||||
|
||||
template< typename Buffer
|
||||
, typename View
|
||||
>
|
||||
void read_stripped_data( const View& dst_view
|
||||
, int plane )
|
||||
{
|
||||
typedef typename is_bit_aligned< typename View::value_type >::type is_view_bit_aligned_t;
|
||||
|
||||
//typedef row_buffer_helper_view< View > row_buffer_helper_t;
|
||||
typedef Buffer row_buffer_helper_t;
|
||||
|
||||
typedef typename row_buffer_helper_t::buffer_t buffer_t;
|
||||
typedef typename row_buffer_helper_t::iterator_t it_t;
|
||||
|
||||
std::size_t size_to_allocate = buffer_size< typename View::value_type >( dst_view.width()
|
||||
, is_view_bit_aligned_t() );
|
||||
row_buffer_helper_t row_buffer_helper( size_to_allocate, true );
|
||||
|
||||
it_t begin = row_buffer_helper.begin();
|
||||
|
||||
it_t first = begin + this->_settings._top_left.x;
|
||||
it_t last = first + this->_settings._dim.x; // one after last element
|
||||
|
||||
// I don't think tiff allows for random access of row, that's why we need
|
||||
// to read and discard rows when reading subimages.
|
||||
skip_over_rows( row_buffer_helper.buffer()
|
||||
, plane
|
||||
);
|
||||
|
||||
mirror_bits< buffer_t
|
||||
, typename is_bit_aligned< View >::type
|
||||
> mirror_bits( _io_dev.are_bytes_swapped() );
|
||||
|
||||
std::ptrdiff_t row = this->_settings._top_left.y;
|
||||
std::ptrdiff_t row_end = row + this->_settings._dim.y;
|
||||
std::ptrdiff_t dst_row = 0;
|
||||
|
||||
for(
|
||||
; row < row_end
|
||||
; ++row, ++dst_row
|
||||
)
|
||||
{
|
||||
_io_dev.read_scanline( row_buffer_helper.buffer()
|
||||
, row
|
||||
, static_cast< tsample_t >( plane )
|
||||
);
|
||||
|
||||
mirror_bits( row_buffer_helper.buffer() );
|
||||
|
||||
this->_cc_policy.read( first
|
||||
, last
|
||||
, dst_view.row_begin( dst_row ));
|
||||
}
|
||||
}
|
||||
|
||||
template< typename Pixel >
|
||||
std::size_t buffer_size( std::size_t width
|
||||
, mpl::false_ // is_bit_aligned
|
||||
)
|
||||
{
|
||||
std::size_t scanline_size_in_bytes = _io_dev.get_scanline_size();
|
||||
|
||||
std::size_t element_size = sizeof( Pixel );
|
||||
|
||||
return std::max( width
|
||||
, (( scanline_size_in_bytes + element_size - 1 ) / element_size ));
|
||||
}
|
||||
|
||||
template< typename Pixel >
|
||||
std::size_t buffer_size( std::size_t /* width */
|
||||
, mpl::true_ // is_bit_aligned
|
||||
)
|
||||
{
|
||||
return _io_dev.get_scanline_size();
|
||||
}
|
||||
|
||||
private:
|
||||
|
||||
Device& _io_dev;
|
||||
|
||||
template < int K > friend struct plane_recursion;
|
||||
};
|
||||
|
||||
struct tiff_type_format_checker
|
||||
{
|
||||
tiff_type_format_checker( const image_read_info< tiff_tag >& info )
|
||||
: _info( info )
|
||||
{}
|
||||
|
||||
template< typename Image >
|
||||
bool apply()
|
||||
{
|
||||
typedef typename Image::view_t view_t;
|
||||
|
||||
return is_allowed< view_t >( _info
|
||||
, mpl::true_()
|
||||
);
|
||||
}
|
||||
|
||||
private:
|
||||
|
||||
const image_read_info< tiff_tag >& _info;
|
||||
};
|
||||
|
||||
struct tiff_read_is_supported
|
||||
{
|
||||
template< typename View >
|
||||
struct apply : public is_read_supported< typename get_pixel_type< View >::type
|
||||
, tiff_tag
|
||||
>
|
||||
{};
|
||||
};
|
||||
|
||||
template< typename Device
|
||||
>
|
||||
class dynamic_image_reader< Device
|
||||
, tiff_tag
|
||||
>
|
||||
: public reader< Device
|
||||
, tiff_tag
|
||||
, detail::read_and_no_convert
|
||||
>
|
||||
{
|
||||
typedef reader< Device
|
||||
, tiff_tag
|
||||
, detail::read_and_no_convert
|
||||
> parent_t;
|
||||
|
||||
public:
|
||||
|
||||
dynamic_image_reader( Device& device
|
||||
, const image_read_settings< tiff_tag >& settings
|
||||
)
|
||||
: parent_t( device
|
||||
, settings
|
||||
)
|
||||
{}
|
||||
|
||||
template< typename Images >
|
||||
void apply( any_image< Images >& images )
|
||||
{
|
||||
tiff_type_format_checker format_checker( this->_info );
|
||||
|
||||
if( !construct_matched( images
|
||||
, format_checker
|
||||
))
|
||||
{
|
||||
io_error( "No matching image type between those of the given any_image and that of the file" );
|
||||
}
|
||||
else
|
||||
{
|
||||
init_image( images
|
||||
, this->_info
|
||||
);
|
||||
|
||||
dynamic_io_fnobj< tiff_read_is_supported
|
||||
, parent_t
|
||||
> op( this );
|
||||
|
||||
apply_operation( view( images )
|
||||
, op
|
||||
);
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
} // namespace detail
|
||||
} // namespace gil
|
||||
} // namespace boost
|
||||
|
||||
#endif // BOOST_GIL_EXTENSION_IO_TIFF_IO_READ_HPP
|
||||
Reference in New Issue
Block a user