diff options
author | bubnikv <bubnikv@gmail.com> | 2018-09-19 12:02:24 +0300 |
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committer | bubnikv <bubnikv@gmail.com> | 2018-09-19 12:02:24 +0300 |
commit | 0558b53493a77bae44831cf87bb0f59359828ef5 (patch) | |
tree | c3e8dbdf7d91a051c12d9ebbf7606d41047fea96 /src/png/pixel_traits.hpp | |
parent | 3ddaccb6410478ad02d8c0e02d6d8e6eb1785b9f (diff) |
WIP: Moved sources int src/, separated most of the source code from Perl.
The XS was left only for the unit / integration tests, and it links
libslic3r only. No wxWidgets are allowed to be used from Perl starting
from now.
Diffstat (limited to 'src/png/pixel_traits.hpp')
-rw-r--r-- | src/png/pixel_traits.hpp | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/src/png/pixel_traits.hpp b/src/png/pixel_traits.hpp new file mode 100644 index 000000000..8ffdfeedb --- /dev/null +++ b/src/png/pixel_traits.hpp @@ -0,0 +1,103 @@ +/* + * Copyright (C) 2007,2008 Alex Shulgin + * + * This file is part of png++ the C++ wrapper for libpng. PNG++ is free + * software; the exact copying conditions are as follows: + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#ifndef PNGPP_PIXEL_TRAITS_HPP_INCLUDED +#define PNGPP_PIXEL_TRAITS_HPP_INCLUDED + +#include <limits> +#include "types.hpp" + +namespace png +{ + + /** + * \brief Pixel traits class template. + * + * Provides information about pixel color type and components bit depth. + * Not implemented--see specializations. + * + * \see pixel_traits<rgb_pixel>, pixel_traits<rgba_pixel> + */ + template< typename pixel > struct pixel_traits; + + /** + * \brief Basic pixel traits class template. + * + * Provides common implementation for various pixel_traits<> + * specializations. + */ + template< typename pixel, + typename component, + color_type pixel_color_type, + int channels_value = sizeof(pixel) / sizeof(component), + int bit_depth_value = std::numeric_limits< component >::digits > + struct basic_pixel_traits + { + typedef pixel pixel_type; + typedef component component_type; + + static color_type get_color_type() + { + return pixel_color_type; + } + + static const int channels = channels_value; + static int get_channels() + { + return channels; + } + + static const int bit_depth = bit_depth_value; + static int get_bit_depth() + { + return bit_depth; + } + }; + + /** + * \brief Basic pixel traits class template for pixels with alpha + * channel. + */ + template< typename component > + struct basic_alpha_pixel_traits + { + /** + * \brief Returns the default alpha channel filler for full + * opacity. + */ + static component get_alpha_filler() + { + return std::numeric_limits< component >::max(); + } + }; + +} // namespace png + +#endif // PNGPP_PIXEL_TRAITS_HPP_INCLUDED |