Line data Source code
1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #ifndef INCLUDED_BASEBMP_PACKEDPIXELFORMATS_HXX
21 : #define INCLUDED_BASEBMP_PACKEDPIXELFORMATS_HXX
22 :
23 : #include <basebmp/color.hxx>
24 : #include <basebmp/colortraits.hxx>
25 : #include <basebmp/accessor.hxx>
26 : #include <basebmp/pixeliterator.hxx>
27 : #include <basebmp/packedpixeliterator.hxx>
28 : #include <basebmp/pixelformatadapters.hxx>
29 : #include <basebmp/paletteimageaccessor.hxx>
30 : #include <basebmp/metafunctions.hxx>
31 :
32 : #include <vigra/numerictraits.hxx>
33 : #include <vigra/metaprogramming.hxx>
34 :
35 : namespace basebmp
36 : {
37 :
38 : //-----------------------------------------------------------------------------
39 :
40 : /** Lookup index value for given color value in a PaletteImageAccessor
41 : */
42 : template< class Accessor > struct ColorLookup
43 : {
44 1176 : typename Accessor::data_type operator()( const Accessor& acc,
45 : typename Accessor::value_type v ) const
46 : {
47 1176 : return acc.lookup(v);
48 : }
49 : };
50 :
51 : //-----------------------------------------------------------------------------
52 :
53 : // partial specialization of AccessorTraits for PaletteAccessor
54 : template< class Accessor, typename ColorType > struct AccessorTraits<
55 : PaletteImageAccessor< Accessor, ColorType > >
56 : {
57 : /// value type of described accessor
58 : typedef typename PaletteImageAccessor< Accessor, ColorType >::value_type value_type;
59 :
60 : /// Retrieve stand-alone color lookup function for given Accessor type
61 : typedef ColorLookup< PaletteImageAccessor< Accessor, ColorType > > color_lookup;
62 :
63 : /// Retrieve raw pixel data accessor for given Accessor type
64 : typedef Accessor raw_accessor;
65 :
66 : /** accessor for XOR setter access is disabled, since the results
67 : * are usually completely unintended - you'll usually want to
68 : * wrap an xor_accessor with a PaletteAccessor, not the other way
69 : * around.
70 : */
71 : typedef vigra::VigraFalseType xor_accessor;
72 :
73 : /** accessor for masked setter access is disabled, since the
74 : * results are usually completely unintended - you'll usually
75 : * want to wrap a masked_accessor with a PaletteAccessor, not the
76 : * other way around.
77 : */
78 : template< class MaskAccessor,
79 : class Iterator,
80 : class MaskIterator > struct masked_accessor
81 : {
82 : typedef vigra::VigraFalseType type;
83 : };
84 : };
85 :
86 : //-----------------------------------------------------------------------------
87 :
88 : template< typename ColorType > struct PaletteAccessorSelector
89 : {
90 : template< class Accessor > struct wrap_accessor
91 : {
92 : typedef PaletteImageAccessor< Accessor, ColorType > type;
93 : };
94 : };
95 :
96 : //-----------------------------------------------------------------------------
97 :
98 : template< class Iterator,
99 : class Accessor > struct PixelFormatTraitsTemplate_Palette
100 : {
101 : typedef typename Iterator::value_type pixel_type;
102 : typedef Iterator iterator_type;
103 : typedef Accessor raw_accessor_type;
104 : typedef PaletteAccessorSelector<Color> accessor_selector;
105 : };
106 :
107 : template< int BitsPerPixel,
108 : bool MsbFirst > struct PixelFormatTraitsTemplate_PackedPalette :
109 : public PixelFormatTraitsTemplate_Palette<
110 : PackedPixelIterator< sal_uInt8,
111 : BitsPerPixel,
112 : MsbFirst >,
113 : NonStandardAccessor< sal_uInt8 > >
114 : {};
115 :
116 : //-----------------------------------------------------------------------------
117 :
118 : // 1bpp MSB
119 : typedef PixelFormatTraitsTemplate_PackedPalette<1, true> PixelFormatTraits_PAL1_MSB;
120 :
121 : // 1bpp LSB
122 : typedef PixelFormatTraitsTemplate_PackedPalette<1, false> PixelFormatTraits_PAL1_LSB;
123 :
124 : // 4bpp MSB
125 : typedef PixelFormatTraitsTemplate_PackedPalette<4, true> PixelFormatTraits_PAL4_MSB;
126 :
127 : // 4bpp LSB
128 : typedef PixelFormatTraitsTemplate_PackedPalette<4, false> PixelFormatTraits_PAL4_LSB;
129 :
130 : // 8bpp
131 : typedef PixelFormatTraitsTemplate_Palette<
132 : PixelIterator< sal_uInt8 >,
133 : StandardAccessor< sal_uInt8 > > PixelFormatTraits_PAL8;
134 :
135 : } // namespace basebmp
136 :
137 : #endif /* INCLUDED_BASEBMP_PACKEDPIXELFORMATS_HXX */
138 :
139 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
