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Diffstat (limited to 'src/png/image_info.hpp')
| -rw-r--r-- | src/png/image_info.hpp | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/src/png/image_info.hpp b/src/png/image_info.hpp new file mode 100644 index 000000000..8407bc18b --- /dev/null +++ b/src/png/image_info.hpp @@ -0,0 +1,215 @@ +/* + * 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_IMAGE_INFO_HPP_INCLUDED +#define PNGPP_IMAGE_INFO_HPP_INCLUDED + +#include "types.hpp" +#include "palette.hpp" +#include "tRNS.hpp" +#include "pixel_traits.hpp" + +namespace png +{ + + /** + * \brief Holds information about PNG image. + * + * \see image, generator, consumer + */ + class image_info + { + public: + /** + * \brief Constructs the image_info object with default values + * for color_type, interlace_type, compression_method and + * filter_type. + */ + image_info() + : m_width(0), + m_height(0), + m_bit_depth(0), + m_color_type(color_type_none), + m_interlace_type(interlace_none), + m_compression_type(compression_type_default), + m_filter_type(filter_type_default), + m_gamma(0.0) + { + } + + uint_32 get_width() const + { + return m_width; + } + + void set_width(uint_32 width) + { + m_width = width; + } + + uint_32 get_height() const + { + return m_height; + } + + void set_height(uint_32 height) + { + m_height = height; + } + + color_type get_color_type() const + { + return m_color_type; + } + + void set_color_type(color_type color_space) + { + m_color_type = color_space; + } + + int get_bit_depth() const + { + return m_bit_depth; + } + + void set_bit_depth(int bit_depth) + { + m_bit_depth = bit_depth; + } + + interlace_type get_interlace_type() const + { + return m_interlace_type; + } + + void set_interlace_type(interlace_type interlace) + { + m_interlace_type = interlace; + } + + compression_type get_compression_type() const + { + return m_compression_type; + } + + void set_compression_type(compression_type compression) + { + m_compression_type = compression; + } + + filter_type get_filter_type() const + { + return m_filter_type; + } + + void set_filter_type(filter_type filter) + { + m_filter_type = filter; + } + + palette const& get_palette() const + { + return m_palette; + } + + palette& get_palette() + { + return m_palette; + } + + void set_palette(palette const& plte) + { + m_palette = plte; + } + + /** + * \brief Removes all entries from the palette. + */ + void drop_palette() + { + m_palette.clear(); + } + + tRNS const& get_tRNS() const + { + return m_tRNS; + } + + tRNS& get_tRNS() + { + return m_tRNS; + } + + void set_tRNS(tRNS const& trns) + { + m_tRNS = trns; + } + + double get_gamma() const + { + return m_gamma; + } + + void set_gamma(double gamma) + { + m_gamma = gamma; + } + + protected: + uint_32 m_width; + uint_32 m_height; + int m_bit_depth; + color_type m_color_type; + interlace_type m_interlace_type; + compression_type m_compression_type; + filter_type m_filter_type; + palette m_palette; + tRNS m_tRNS; + double m_gamma; + }; + + /** + * \brief Returns an image_info object with color_type and + * bit_depth fields setup appropriate for the \c pixel type. + */ + template< typename pixel > + image_info + make_image_info() + { + typedef pixel_traits< pixel > traits; + image_info info; + info.set_color_type(traits::get_color_type()); + info.set_bit_depth(traits::get_bit_depth()); + return info; + } + +} // namespace png + +#endif // PNGPP_IMAGE_INFO_HPP_INCLUDED |