| /************************************************************** |
| * |
| * 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 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| |
| #ifndef INCLUDED_BASEBMP_PACKEDPIXELFORMATS_HXX |
| #define INCLUDED_BASEBMP_PACKEDPIXELFORMATS_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/paletteimageaccessor.hxx> |
| #include <basebmp/metafunctions.hxx> |
| |
| #include <vigra/numerictraits.hxx> |
| #include <vigra/metaprogramming.hxx> |
| |
| #include <functional> |
| |
| namespace basebmp |
| { |
| |
| //----------------------------------------------------------------------------- |
| |
| /** Lookup index value for given color value in a PaletteImageAccessor |
| */ |
| template< class Accessor > struct ColorLookup |
| { |
| typename Accessor::data_type operator()( const Accessor& acc, |
| typename Accessor::value_type v ) const |
| { |
| return acc.lookup(v); |
| } |
| }; |
| |
| //----------------------------------------------------------------------------- |
| |
| // partial specialization of AccessorTraits for PaletteAccessor |
| template< class Accessor, typename ColorType > struct AccessorTraits< |
| PaletteImageAccessor< Accessor, ColorType > > |
| { |
| /// value type of described accessor |
| typedef typename PaletteImageAccessor< Accessor, ColorType >::value_type value_type; |
| |
| /// Retrieve stand-alone color lookup function for given Accessor type |
| typedef ColorLookup< PaletteImageAccessor< Accessor, ColorType > > color_lookup; |
| |
| /// Retrieve raw pixel data accessor for given Accessor type |
| typedef Accessor raw_accessor; |
| |
| /** accessor for XOR setter access is disabled, since the results |
| * are usually completely unintended - you'll usually want to |
| * wrap an xor_accessor with a PaletteAccessor, not the other way |
| * around. |
| */ |
| typedef vigra::VigraFalseType xor_accessor; |
| |
| /** accessor for masked setter access is disabled, since the |
| * results are usually completely unintended - you'll usually |
| * want to wrap a masked_accessor with a PaletteAccessor, not the |
| * other way around. |
| */ |
| template< class MaskAccessor, |
| class Iterator, |
| class MaskIterator > struct masked_accessor |
| { |
| typedef vigra::VigraFalseType type; |
| }; |
| }; |
| |
| //----------------------------------------------------------------------------- |
| |
| template< typename ColorType > struct PaletteAccessorSelector |
| { |
| template< class Accessor > struct wrap_accessor |
| { |
| typedef PaletteImageAccessor< Accessor, ColorType > type; |
| }; |
| }; |
| |
| //----------------------------------------------------------------------------- |
| |
| template< class Iterator, |
| class Accessor > struct PixelFormatTraitsTemplate_Palette |
| { |
| typedef typename Iterator::value_type pixel_type; |
| typedef Iterator iterator_type; |
| typedef Accessor raw_accessor_type; |
| typedef PaletteAccessorSelector<Color> accessor_selector; |
| }; |
| |
| template< int BitsPerPixel, |
| bool MsbFirst > struct PixelFormatTraitsTemplate_PackedPalette : |
| public PixelFormatTraitsTemplate_Palette< |
| PackedPixelIterator< sal_uInt8, |
| BitsPerPixel, |
| MsbFirst >, |
| NonStandardAccessor< sal_uInt8 > > |
| {}; |
| |
| //----------------------------------------------------------------------------- |
| |
| // 1bpp MSB |
| typedef PixelFormatTraitsTemplate_PackedPalette<1, true> PixelFormatTraits_PAL1_MSB; |
| |
| // 1bpp LSB |
| typedef PixelFormatTraitsTemplate_PackedPalette<1, false> PixelFormatTraits_PAL1_LSB; |
| |
| // 4bpp MSB |
| typedef PixelFormatTraitsTemplate_PackedPalette<4, true> PixelFormatTraits_PAL4_MSB; |
| |
| // 4bpp LSB |
| typedef PixelFormatTraitsTemplate_PackedPalette<4, false> PixelFormatTraits_PAL4_LSB; |
| |
| // 8bpp |
| typedef PixelFormatTraitsTemplate_Palette< |
| PixelIterator< sal_uInt8 >, |
| StandardAccessor< sal_uInt8 > > PixelFormatTraits_PAL8; |
| |
| } // namespace basebmp |
| |
| #endif /* INCLUDED_BASEBMP_PACKEDPIXELFORMATS_HXX */ |
