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# image_info.hpp

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    00001 /*
    00002  * Copyright (C) 2007,2008   Alex Shulgin
    00003  *
    00004  * This file is part of png++ the C++ wrapper for libpng.  PNG++ is free
    00005  * software; the exact copying conditions are as follows:
    00006  *
    00007  * Redistribution and use in source and binary forms, with or without
    00008  * modification, are permitted provided that the following conditions are met:
    00009  *
    00010  * 1. Redistributions of source code must retain the above copyright notice,
    00011  * this list of conditions and the following disclaimer.
    00012  *
    00013  * 2. Redistributions in binary form must reproduce the above copyright
    00014  * notice, this list of conditions and the following disclaimer in the
    00015  * documentation and/or other materials provided with the distribution.
    00016  *
    00017  * 3. The name of the author may not be used to endorse or promote products
    00018  * derived from this software without specific prior written permission.
    00019  *
    00020  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
    00021  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
    00022  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
    00023  * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    00024  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
    00025  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
    00026  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
    00027  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
    00028  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
    00029  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    00030  */
    00031 #ifndef PNGPP_IMAGE_INFO_HPP_INCLUDED
    00032 #define PNGPP_IMAGE_INFO_HPP_INCLUDED
    00033
    00034 #include "types.hpp"
    00035 #include "palette.hpp"
    00036 #include "tRNS.hpp"
    00037 #include "pixel_traits.hpp"
    00038
    00039 namespace png
    00040 {
    00041
    00047     class image_info
    00048     {
    00049     public:
    00055         image_info()
    00056             : m_width(0),
    00057               m_height(0),
    00058               m_bit_depth(0),
    00059               m_color_type(color_type_none),
    00060               m_interlace_type(interlace_none),
    00061               m_compression_type(compression_type_default),
    00062               m_filter_type(filter_type_default)
    00063         {
    00064         }
    00065
    00066         size_t get_width() const
    00067         {
    00068             return m_width;
    00069         }
    00070
    00071         void set_width(size_t width)
    00072         {
    00073             m_width = width;
    00074         }
    00075
    00076         size_t get_height() const
    00077         {
    00078             return m_height;
    00079         }
    00080
    00081         void set_height(size_t height)
    00082         {
    00083             m_height = height;
    00084         }
    00085
    00086         color_type get_color_type() const
    00087         {
    00088             return m_color_type;
    00089         }
    00090
    00091         void set_color_type(color_type color_space)
    00092         {
    00093             m_color_type = color_space;
    00094         }
    00095
    00096         size_t get_bit_depth() const
    00097         {
    00098             return m_bit_depth;
    00099         }
    00100
    00101         void set_bit_depth(size_t bit_depth)
    00102         {
    00103             m_bit_depth = bit_depth;
    00104         }
    00105
    00106         interlace_type get_interlace_type() const
    00107         {
    00108             return m_interlace_type;
    00109         }
    00110
    00111         void set_interlace_type(interlace_type interlace)
    00112         {
    00113             m_interlace_type = interlace;
    00114         }
    00115
    00116         compression_type get_compression_type() const
    00117         {
    00118             return m_compression_type;
    00119         }
    00120
    00121         void set_compression_type(compression_type compression)
    00122         {
    00123             m_compression_type = compression;
    00124         }
    00125
    00126         filter_type get_filter_type() const
    00127         {
    00128             return m_filter_type;
    00129         }
    00130
    00131         void set_filter_type(filter_type filter)
    00132         {
    00133             m_filter_type = filter;
    00134         }
    00135
    00136         palette const& get_palette() const
    00137         {
    00138             return m_palette;
    00139         }
    00140
    00141         palette& get_palette()
    00142         {
    00143             return m_palette;
    00144         }
    00145
    00146         void set_palette(palette const& plte)
    00147         {
    00148             m_palette = plte;
    00149         }
    00150
    00154         void drop_palette()
    00155         {
    00156             m_palette.clear();
    00157         }
    00158
    00159         tRNS const& get_tRNS() const
    00160         {
    00161             return m_tRNS;
    00162         }
    00163
    00164         tRNS& get_tRNS()
    00165         {
    00166             return m_tRNS;
    00167         }
    00168
    00169         void set_tRNS(tRNS const& trns)
    00170         {
    00171             m_tRNS = trns;
    00172         }
    00173
    00174     protected:
    00175         uint_32 m_width;
    00176         uint_32 m_height;
    00177         size_t m_bit_depth;
    00178         color_type m_color_type;
    00179         interlace_type m_interlace_type;
    00180         compression_type m_compression_type;
    00181         filter_type m_filter_type;
    00182         palette m_palette;
    00183         tRNS m_tRNS;
    00184     };
    00185
    00190     template< typename pixel >
    00191     image_info
    00192     make_image_info()
    00193     {
    00194         typedef pixel_traits< pixel > traits;
    00195         image_info info;
    00196         info.set_color_type(traits::get_color_type());
    00197         info.set_bit_depth(traits::get_bit_depth());
    00198         return info;
    00199     }
    00200
    00201 } // namespace png
    00202
    00203 #endif // PNGPP_IMAGE_INFO_HPP_INCLUDED