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index_pixel.hpp
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/*
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* Copyright (C) 2007,2008 Alex Shulgin
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*
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* This file is part of png++ the C++ wrapper for libpng. PNG++ is free
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* software; the exact copying conditions are as follows:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef PNGPP_INDEX_PIXEL_HPP_INCLUDED
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#define PNGPP_INDEX_PIXEL_HPP_INCLUDED
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#include "
types.hpp
"
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#include "
packed_pixel.hpp
"
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#include "
pixel_traits.hpp
"
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namespace
png
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{
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class
index_pixel
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{
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public
:
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index_pixel
(
byte
index = 0)
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: m_index(index)
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{
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}
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operator
byte
()
const
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{
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return
m_index;
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}
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private
:
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byte
m_index;
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};
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template
<
size_t
bits >
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class
packed_index_pixel
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:
public
packed_pixel
< bits >
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{
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public
:
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packed_index_pixel
(
byte
value = 0)
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:
packed_pixel
< bits >(value)
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{
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}
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};
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typedef
packed_index_pixel< 1 >
index_pixel_1
;
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typedef
packed_index_pixel< 2 >
index_pixel_2
;
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typedef
packed_index_pixel< 4 >
index_pixel_4
;
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template
<>
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struct
pixel_traits<
index_pixel
>
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:
basic_pixel_traits
< index_pixel, byte, color_type_palette >
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{
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};
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template
<
size_t
bits >
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struct
pixel_traits<
packed_index_pixel
< bits > >
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:
basic_pixel_traits
< packed_index_pixel< bits >, byte,
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color_type_palette,
/* channels = */
1, bits >
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{
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};
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}
// namespace png
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#endif // PNGPP_INDEX_PIXEL_HPP_INCLUDED
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