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annotate Core/Images/PixelTraits.h @ 2493:5aa787a03e7d

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PixelTraits::FloatToPixel for color formats
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 15 Mar 2018 16:17:01 +0100
parents e91bab2d8c75
children 89b789366596
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2018 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU General Public License as
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9 * published by the Free Software Foundation, either version 3 of the
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10 * License, or (at your option) any later version.
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11 *
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12 * In addition, as a special exception, the copyright holders of this
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13 * program give permission to link the code of its release with the
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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15 * that use the same license as the "OpenSSL" library), and distribute
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16 * the linked executables. You must obey the GNU General Public License
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17 * in all respects for all of the code used other than "OpenSSL". If you
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18 * modify file(s) with this exception, you may extend this exception to
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19 * your version of the file(s), but you are not obligated to do so. If
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20 * you do not wish to do so, delete this exception statement from your
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21 * version. If you delete this exception statement from all source files
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22 * in the program, then also delete it here.
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23 *
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24 * This program is distributed in the hope that it will be useful, but
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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27 * General Public License for more details.
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28 *
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29 * You should have received a copy of the GNU General Public License
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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31 **/
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32
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33
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34 #pragma once
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35
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36 #include "../Enumerations.h"
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37 #include "../OrthancException.h"
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38
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39 #include <limits>
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40
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41 namespace Orthanc
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42 {
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43 template <PixelFormat format,
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44 typename _PixelType>
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45 struct IntegerPixelTraits
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46 {
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47 typedef _PixelType PixelType;
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48
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49 ORTHANC_FORCE_INLINE
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50 static PixelFormat GetPixelFormat()
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51 {
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52 return format;
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53 }
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54
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55 ORTHANC_FORCE_INLINE
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56 static PixelType IntegerToPixel(int64_t value)
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57 {
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58 if (value < static_cast<int64_t>(std::numeric_limits<PixelType>::min()) ||
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59 value > static_cast<int64_t>(std::numeric_limits<PixelType>::max()))
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60 {
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61 throw OrthancException(ErrorCode_ParameterOutOfRange);
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62 }
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63 else
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64 {
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65 return static_cast<PixelType>(value);
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66 }
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67 }
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68
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69 ORTHANC_FORCE_INLINE
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70 static void SetZero(PixelType& target)
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71 {
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72 target = 0;
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73 }
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74
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75 ORTHANC_FORCE_INLINE
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76 static void SetMinValue(PixelType& target)
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77 {
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78 target = std::numeric_limits<PixelType>::min();
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79 }
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80
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81 ORTHANC_FORCE_INLINE
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82 static void SetMaxValue(PixelType& target)
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83 {
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84 target = std::numeric_limits<PixelType>::max();
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85 }
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86
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87 ORTHANC_FORCE_INLINE
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88 static void Copy(PixelType& target,
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89 const PixelType& source)
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90 {
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91 target = source;
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92 }
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93
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94 ORTHANC_FORCE_INLINE
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95 static float PixelToFloat(const PixelType& source)
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96 {
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97 return static_cast<float>(source);
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98 }
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99
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100 ORTHANC_FORCE_INLINE
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101 static void FloatToPixel(PixelType& target,
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102 float value)
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103 {
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104 if (value < static_cast<float>(std::numeric_limits<PixelType>::min()))
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105 {
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106 target = std::numeric_limits<PixelType>::min();
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107 }
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108 else if (value > static_cast<float>(std::numeric_limits<PixelType>::max()))
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109 {
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110 target = std::numeric_limits<PixelType>::max();
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111 }
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112 else
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113 {
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114 target = static_cast<PixelType>(value);
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115 }
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116 }
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117
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118 ORTHANC_FORCE_INLINE
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119 static bool IsEqual(const PixelType& a,
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120 const PixelType& b)
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121 {
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122 return a == b;
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123 }
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124 };
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125
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126
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127 template <PixelFormat Format>
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128 struct PixelTraits;
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129
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130
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131 template <>
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132 struct PixelTraits<PixelFormat_Grayscale8> :
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133 public IntegerPixelTraits<PixelFormat_Grayscale8, uint8_t>
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134 {
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135 };
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136
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137
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138 template <>
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139 struct PixelTraits<PixelFormat_Grayscale16> :
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140 public IntegerPixelTraits<PixelFormat_Grayscale16, uint16_t>
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141 {
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142 };
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143
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144
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145 template <>
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146 struct PixelTraits<PixelFormat_SignedGrayscale16> :
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147 public IntegerPixelTraits<PixelFormat_SignedGrayscale16, int16_t>
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148 {
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149 };
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150
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151
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152 template <>
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153 struct PixelTraits<PixelFormat_RGB24>
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154 {
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155 struct PixelType
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156 {
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157 uint8_t red_;
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158 uint8_t green_;
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159 uint8_t blue_;
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160 };
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161
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162 ORTHANC_FORCE_INLINE
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163 static PixelFormat GetPixelFormat()
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164 {
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165 return PixelFormat_RGB24;
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166 }
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167
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168 ORTHANC_FORCE_INLINE
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169 static void SetZero(PixelType& target)
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170 {
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171 target.red_ = 0;
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172 target.green_ = 0;
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173 target.blue_ = 0;
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174 }
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175
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176 ORTHANC_FORCE_INLINE
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177 static void Copy(PixelType& target,
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178 const PixelType& source)
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179 {
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180 target.red_ = source.red_;
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181 target.green_ = source.green_;
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182 target.blue_ = source.blue_;
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183 }
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184
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185 ORTHANC_FORCE_INLINE
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186 static bool IsEqual(const PixelType& a,
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187 const PixelType& b)
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188 {
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189 return (a.red_ == b.red_ &&
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190 a.green_ == b.green_ &&
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191 a.blue_ == b.blue_);
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192 }
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193
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194 ORTHANC_FORCE_INLINE
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195 static void FloatToPixel(PixelType& target,
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196 float value)
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197 {
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198 uint8_t v;
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199 PixelTraits<PixelFormat_Grayscale8>::FloatToPixel(v, value);
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200
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201 target.red_ = v;
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202 target.green_ = v;
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203 target.blue_ = v;
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204 }
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205 };
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206
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207
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208 template <>
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209 struct PixelTraits<PixelFormat_BGRA32>
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210 {
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211 struct PixelType
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212 {
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213 uint8_t blue_;
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214 uint8_t green_;
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215 uint8_t red_;
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216 uint8_t alpha_;
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217 };
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218
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219 ORTHANC_FORCE_INLINE
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220 static PixelFormat GetPixelFormat()
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221 {
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222 return PixelFormat_BGRA32;
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223 }
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224
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225 ORTHANC_FORCE_INLINE
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226 static void SetZero(PixelType& target)
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227 {
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228 target.blue_ = 0;
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229 target.green_ = 0;
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230 target.red_ = 0;
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231 target.alpha_ = 0;
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232 }
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233
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234 ORTHANC_FORCE_INLINE
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235 static void Copy(PixelType& target,
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236 const PixelType& source)
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237 {
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238 target.blue_ = source.blue_;
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239 target.green_ = source.green_;
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240 target.red_ = source.red_;
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241 target.alpha_ = source.alpha_;
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242 }
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243
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244 ORTHANC_FORCE_INLINE
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245 static bool IsEqual(const PixelType& a,
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246 const PixelType& b)
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247 {
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248 return (a.blue_ == b.blue_ &&
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249 a.green_ == b.green_ &&
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250 a.red_ == b.red_ &&
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251 a.alpha_ == b.alpha_);
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252 }
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253
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254 ORTHANC_FORCE_INLINE
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255 static void FloatToPixel(PixelType& target,
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256 float value)
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257 {
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258 uint8_t v;
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259 PixelTraits<PixelFormat_Grayscale8>::FloatToPixel(v, value);
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260
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261 target.blue_ = v;
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262 target.green_ = v;
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263 target.red_ = v;
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264 target.alpha_ = 255;
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265 }
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266 };
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267 }