1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
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_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 */
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
