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Diffstat (limited to 'basebmp/inc/basebmp/greylevelformats.hxx')
-rw-r--r-- | basebmp/inc/basebmp/greylevelformats.hxx | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/basebmp/inc/basebmp/greylevelformats.hxx b/basebmp/inc/basebmp/greylevelformats.hxx new file mode 100644 index 000000000000..0adbcbb53c30 --- /dev/null +++ b/basebmp/inc/basebmp/greylevelformats.hxx @@ -0,0 +1,135 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +#ifndef INCLUDED_BASEBMP_GREYLEVELFORMATS_HXX +#define INCLUDED_BASEBMP_GREYLEVELFORMATS_HXX + +#include <basebmp/color.hxx> +#include <basebmp/colortraits.hxx> +#include <basebmp/accessor.hxx> +#include <basebmp/pixeliterator.hxx> +#include <basebmp/packedpixeliterator.hxx> +#include <basebmp/pixelformatadapters.hxx> +#include <basebmp/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_GREYLEVELFORMATS_HXX */ |