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_GRAY_PIXEL_HPP_INCLUDED 00032 #define PNGPP_GRAY_PIXEL_HPP_INCLUDED 00033 00034 #include "types.hpp" 00035 #include "packed_pixel.hpp" 00036 #include "pixel_traits.hpp" 00037 00038 namespace png 00039 { 00040 00044 typedef byte gray_pixel; 00045 00049 typedef uint_16 gray_pixel_16; 00050 00055 template< size_t bits > 00056 class packed_gray_pixel 00057 : public packed_pixel< bits > 00058 { 00059 public: 00060 packed_gray_pixel(byte value = 0) 00061 : packed_pixel< bits >(value) 00062 { 00063 } 00064 }; 00065 00069 typedef packed_gray_pixel< 1 > gray_pixel_1; 00070 00074 typedef packed_gray_pixel< 2 > gray_pixel_2; 00075 00079 typedef packed_gray_pixel< 4 > gray_pixel_4; 00080 00084 template<> 00085 struct pixel_traits< gray_pixel > 00086 : basic_pixel_traits< gray_pixel, byte, color_type_gray > 00087 { 00088 }; 00089 00093 template<> 00094 struct pixel_traits< gray_pixel_16 > 00095 : basic_pixel_traits< gray_pixel_16, uint_16, color_type_gray > 00096 { 00097 }; 00098 00102 template< size_t bits > 00103 struct pixel_traits< packed_gray_pixel< bits > > 00104 : basic_pixel_traits< packed_gray_pixel< bits >, byte, 00105 color_type_gray, /* channels = */ 1, bits > 00106 { 00107 }; 00108 00109 } // namespace png 00110 00111 #endif // PNGPP_GRAY_PIXEL_HPP_INCLUDED
1.7.1