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tiff_dynamic_io.hpp - Hosted on DriveHQ Cloud IT Platform
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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\gil\extension\io\tiff_dynamic_io.hpp
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/* Copyright 2005-2007 Adobe Systems Incorporated Use, modification and distribution are subject to 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). See http://opensource.adobe.com/gil for most recent version including documentation. */ /*************************************************************************************************/ #ifndef GIL_TIFF_DYNAMIC_IO_H #define GIL_TIFF_DYNAMIC_IO_H /// \file /// \brief Support for reading and writing TIFF files /// Requires libtiff! /// \author Hailin Jin and Lubomir Bourdev \n /// Adobe Systems Incorporated /// \date 2005-2007 \n Last updated June 10, 2006 // // We are currently providing the following functions: // template
void tiff_read_image(const char*,any_image
) // template
void tiff_write_view(const char*,any_image_view
) // #include
#include
#include "../dynamic_image/dynamic_image_all.hpp" #include "io_error.hpp" #include "tiff_io.hpp" #include "dynamic_io.hpp" namespace boost { namespace gil { namespace detail { struct tiff_write_is_supported { template
struct apply : public mpl::bool_
::is_supported> {}; }; class tiff_writer_dynamic : public tiff_writer { public: typedef void result_type; tiff_writer_dynamic(const char* filename) : tiff_writer(filename) {} template
void write_view(const any_image_view
& runtime_view) { dynamic_io_fnobj
op(this); apply_operation(runtime_view,op); } }; class tiff_type_format_checker { int _bit_depth; int _color_type; public: tiff_type_format_checker(int bit_depth_in,int color_type_in) : _bit_depth(bit_depth_in),_color_type(color_type_in) {} template
bool apply() { return tiff_read_support
::bit_depth==_bit_depth && tiff_read_support
::color_type==_color_type; } }; struct tiff_read_is_supported { template
struct apply : public mpl::bool_
::is_supported> {}; }; class tiff_reader_dynamic : public tiff_reader { public: tiff_reader_dynamic(const char* filename) : tiff_reader(filename) {} template
void read_image(any_image
& im) { int width,height; unsigned short bps,photometric; TIFFGetField(_tp,TIFFTAG_IMAGEWIDTH,&width); TIFFGetField(_tp,TIFFTAG_IMAGELENGTH,&height); TIFFGetField(_tp,TIFFTAG_BITSPERSAMPLE,&bps); TIFFGetField(_tp,TIFFTAG_PHOTOMETRIC,&photometric); if (!construct_matched(im,tiff_type_format_checker(bps,photometric))) { io_error("tiff_reader_dynamic::read_image(): no matching image type between those of the given any_image and that of the file"); } else { im.recreate(width,height); dynamic_io_fnobj
op(this); apply_operation(view(im),op); } } }; } // namespace detail /// \ingroup TIFF_IO /// \brief reads a TIFF image into a run-time instantiated image /// Opens the given tiff file name, selects the first type in Images whose color space and channel are compatible to those of the image file /// and creates a new image of that type with the dimensions specified by the image file. /// Throws std::ios_base::failure if none of the types in Images are compatible with the type on disk. template
inline void tiff_read_image(const char* filename,any_image
& im) { detail::tiff_reader_dynamic m(filename); m.read_image(im); } /// \ingroup TIFF_IO /// \brief reads a TIFF image into a run-time instantiated image template
inline void tiff_read_image(const std::string& filename,any_image
& im) { tiff_read_image(filename.c_str(),im); } /// \ingroup TIFF_IO /// \brief Saves the currently instantiated view to a tiff file specified by the given tiff image file name. /// Throws std::ios_base::failure if the currently instantiated view type is not supported for writing by the I/O extension /// or if it fails to create the file. template
inline void tiff_write_view(const char* filename,const any_image_view
& runtime_view) { detail::tiff_writer_dynamic m(filename); m.write_view(runtime_view); } /// \ingroup TIFF_IO /// \brief Saves the currently instantiated view to a tiff file specified by the given tiff image file name. template
inline void tiff_write_view(const std::string& filename,const any_image_view
& runtime_view) { tiff_write_view(filename.c_str(),runtime_view); } } } // namespace boost::gil #endif
tiff_dynamic_io.hpp
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