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require_color_space.hpp
Go to the documentation of this file.
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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_REQUIRE_COLOR_SPACE_HPP_INCLUDED
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#define PNGPP_REQUIRE_COLOR_SPACE_HPP_INCLUDED
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#include "
error.hpp
"
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#include "
rgb_pixel.hpp
"
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#include "
rgba_pixel.hpp
"
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#include "
gray_pixel.hpp
"
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#include "
ga_pixel.hpp
"
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#include "
index_pixel.hpp
"
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#include "
io_base.hpp
"
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namespace
png
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{
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namespace
detail
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{
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template
<
typename
pixel >
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struct
wrong_color_space
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{
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inline
static
char
const
*
error_msg
();
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};
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template
<>
inline
char
const
*
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wrong_color_space< rgb_pixel >::error_msg
()
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{
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return
"8-bit RGB color space required"
;
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}
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template
<>
inline
char
const
*
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wrong_color_space< rgb_pixel_16 >::error_msg
()
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{
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return
"16-bit RGB color space required"
;
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}
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template
<>
inline
char
const
*
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wrong_color_space< rgba_pixel >::error_msg
()
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{
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return
"8-bit RGBA color space required"
;
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}
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template
<>
inline
char
const
*
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wrong_color_space< rgba_pixel_16 >::error_msg
()
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{
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return
"16-bit RGBA color space required"
;
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}
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template
<>
inline
char
const
*
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wrong_color_space< gray_pixel >::error_msg
()
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{
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return
"8-bit Grayscale color space required"
;
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}
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template
<>
inline
char
const
*
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wrong_color_space< gray_pixel_1 >::error_msg
()
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{
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return
"1-bit Grayscale color space required"
;
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}
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template
<>
inline
char
const
*
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wrong_color_space< gray_pixel_2 >::error_msg
()
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{
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return
"2-bit Grayscale color space required"
;
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}
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template
<>
inline
char
const
*
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wrong_color_space< gray_pixel_4 >::error_msg
()
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{
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return
"4-bit Grayscale color space required"
;
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}
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template
<>
inline
char
const
*
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wrong_color_space< gray_pixel_16 >::error_msg
()
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{
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return
"16-bit Grayscale color space required"
;
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}
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template
<>
inline
char
const
*
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wrong_color_space< ga_pixel >::error_msg
()
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{
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return
"8-bit Gray+Alpha color space required"
;
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}
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template
<>
inline
char
const
*
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wrong_color_space< ga_pixel_16 >::error_msg
()
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{
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return
"16-bit Gray+Alpha color space required"
;
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}
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template
<>
inline
char
const
*
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wrong_color_space< index_pixel >::error_msg
()
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{
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return
"8-bit Colormap color space required"
;
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}
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template
<>
inline
char
const
*
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wrong_color_space< index_pixel_1 >::error_msg
()
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{
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return
"1-bit Colormap color space required"
;
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}
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template
<>
inline
char
const
*
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wrong_color_space< index_pixel_2 >::error_msg
()
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{
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return
"2-bit Colormap color space required"
;
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}
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template
<>
inline
char
const
*
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wrong_color_space< index_pixel_4 >::error_msg
()
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{
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return
"4-bit Colormap color space required"
;
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}
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}
// namespace detail
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template
<
typename
pixel >
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struct
require_color_space
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{
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typedef
pixel_traits< pixel >
traits
;
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void
operator()
(
io_base
& io)
const
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{
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if
(io.
get_color_type
() != traits::get_color_type()
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|| io.
get_bit_depth
() != traits::get_bit_depth())
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{
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throw
error
(
detail::wrong_color_space< pixel >::error_msg
());
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}
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}
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};
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}
// namespace png
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#endif // PNGPP_REQUIRE_COLOR_SPACE_HPP_INCLUDED
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