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Diffstat (limited to 'basebmp/inc/greylevelformats.hxx')
-rw-r--r-- | basebmp/inc/greylevelformats.hxx | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/basebmp/inc/greylevelformats.hxx b/basebmp/inc/greylevelformats.hxx new file mode 100644 index 000000000000..a758fa941047 --- /dev/null +++ b/basebmp/inc/greylevelformats.hxx @@ -0,0 +1,129 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#ifndef INCLUDED_BASEBMP_INC_GREYLEVELFORMATS_HXX +#define INCLUDED_BASEBMP_INC_GREYLEVELFORMATS_HXX + +#include <basebmp/color.hxx> +#include <colortraits.hxx> +#include <accessor.hxx> +#include <pixeliterator.hxx> +#include <packedpixeliterator.hxx> +#include <pixelformatadapters.hxx> +#include <metafunctions.hxx> + +#include <vigra/numerictraits.hxx> +#include <vigra/metaprogramming.hxx> + +#include <functional> + +namespace basebmp +{ + +template< typename PixelType, + typename ColorType, + int UsedRange > struct GreylevelGetter : + public std::unary_function<PixelType, ColorType> +{ + ColorType operator()( PixelType const& c ) const + { + return ColorTraits<ColorType>::fromGreyscale( + vigra::NumericTraits<PixelType>::toPromote(c) * + vigra::NumericTraits<PixelType>::maxConst / UsedRange ); + } +}; + +template< typename PixelType, + typename ColorType, + int UsedRange > struct GreylevelSetter : + public std::unary_function<ColorType, PixelType> +{ + PixelType operator()( ColorType const& c ) const + { + return vigra::NumericTraits<PixelType>::toPromote( + ColorTraits<ColorType>::toGreyscale(c)) * + UsedRange / + vigra::NumericTraits<PixelType>::maxConst; + } +}; + + + +template< class Iterator, + class Accessor, + int UsedRange > struct PixelFormatTraitsTemplate_Greylevel +{ + typedef typename Iterator::value_type pixel_type; + + typedef GreylevelGetter<pixel_type, + Color, + UsedRange> getter_type; + typedef GreylevelSetter<pixel_type, + Color, + UsedRange> setter_type; + + typedef Iterator iterator_type; + typedef Accessor raw_accessor_type; + typedef AccessorSelector< + getter_type, + setter_type > accessor_selector; +}; + +template< int BitsPerPixel, + bool MsbFirst > struct PixelFormatTraitsTemplate_PackedGreylevel : + public PixelFormatTraitsTemplate_Greylevel< + PackedPixelIterator< sal_uInt8, + BitsPerPixel, + true >, + NonStandardAccessor< sal_uInt8 >, + (1UL << BitsPerPixel)-1 > +{}; + + + +// 1bpp MSB +typedef PixelFormatTraitsTemplate_PackedGreylevel<1, true> PixelFormatTraits_GREY1_MSB; + +// 1bpp LSB +typedef PixelFormatTraitsTemplate_PackedGreylevel<1, false> PixelFormatTraits_GREY1_LSB; +BASEBMP_SPECIALIZE_ACCESSORTRAITS(PixelFormatTraits_GREY1_MSB::getter_type, + PixelFormatTraits_GREY1_MSB::setter_type); + + +// 4bpp MSB +typedef PixelFormatTraitsTemplate_PackedGreylevel<4, true> PixelFormatTraits_GREY4_MSB; + +// 4bpp LSB +typedef PixelFormatTraitsTemplate_PackedGreylevel<4, false> PixelFormatTraits_GREY4_LSB; +BASEBMP_SPECIALIZE_ACCESSORTRAITS(PixelFormatTraits_GREY4_MSB::getter_type, + PixelFormatTraits_GREY4_MSB::setter_type); + +// 8bpp +typedef PixelFormatTraitsTemplate_Greylevel< + PixelIterator< sal_uInt8 >, + StandardAccessor< sal_uInt8 >, + 255 > PixelFormatTraits_GREY8; +BASEBMP_SPECIALIZE_ACCESSORTRAITS(PixelFormatTraits_GREY8::getter_type, + PixelFormatTraits_GREY8::setter_type); + +} // namespace basebmp + +#endif /* INCLUDED_BASEBMP_INC_GREYLEVELFORMATS_HXX */ + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |