1 | /* |
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2 | ----------------------------------------------------------------------------- |
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3 | This source file is part of OGRE |
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4 | (Object-oriented Graphics Rendering Engine) |
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5 | For the latest info, see http://www.ogre3d.org/ |
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6 | |
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7 | Copyright (c) 2000-2006 Torus Knot Software Ltd |
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8 | Also see acknowledgements in Readme.html |
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9 | |
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10 | This program is free software; you can redistribute it and/or modify it under |
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11 | the terms of the GNU Lesser General Public License as published by the Free Software |
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12 | Foundation; either version 2 of the License, or (at your option) any later |
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13 | version. |
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14 | |
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15 | This program is distributed in the hope that it will be useful, but WITHOUT |
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16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. |
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18 | |
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19 | You should have received a copy of the GNU Lesser General Public License along with |
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20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
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21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to |
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22 | http://www.gnu.org/copyleft/lesser.txt. |
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23 | |
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24 | You may alternatively use this source under the terms of a specific version of |
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25 | the OGRE Unrestricted License provided you have obtained such a license from |
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26 | Torus Knot Software Ltd. |
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27 | ----------------------------------------------------------------------------- |
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28 | */ |
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29 | #include "OgreStableHeaders.h" |
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30 | #include "OgreImage.h" |
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31 | #include "OgreArchiveManager.h" |
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32 | #include "OgreException.h" |
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33 | #include "OgreImageCodec.h" |
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34 | #include "OgreColourValue.h" |
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35 | |
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36 | #include "OgreImageResampler.h" |
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37 | |
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38 | namespace Ogre { |
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39 | ImageCodec::~ImageCodec() { |
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40 | } |
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41 | |
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42 | //----------------------------------------------------------------------------- |
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43 | Image::Image() |
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44 | : m_uWidth(0), |
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45 | m_uHeight(0), |
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46 | m_uDepth(0), |
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47 | m_uSize(0), |
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48 | m_uNumMipmaps(0), |
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49 | m_uFlags(0), |
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50 | m_pBuffer( NULL ), |
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51 | m_bAutoDelete( true ) |
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52 | { |
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53 | } |
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54 | |
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55 | //----------------------------------------------------------------------------- |
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56 | Image::Image( const Image &img ) |
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57 | : m_pBuffer( NULL ), |
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58 | m_bAutoDelete( true ) |
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59 | { |
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60 | // call assignment operator |
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61 | *this = img; |
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62 | } |
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63 | |
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64 | //----------------------------------------------------------------------------- |
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65 | Image::~Image() |
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66 | { |
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67 | //Only delete if this was not a dynamic image (meaning app holds & destroys buffer) |
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68 | if( m_pBuffer && m_bAutoDelete ) |
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69 | { |
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70 | delete[] m_pBuffer; |
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71 | m_pBuffer = NULL; |
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72 | } |
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73 | } |
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74 | |
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75 | //----------------------------------------------------------------------------- |
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76 | Image & Image::operator = ( const Image &img ) |
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77 | { |
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78 | if( m_pBuffer && m_bAutoDelete ) |
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79 | { |
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80 | delete[] m_pBuffer; |
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81 | m_pBuffer = NULL; |
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82 | } |
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83 | m_uWidth = img.m_uWidth; |
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84 | m_uHeight = img.m_uHeight; |
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85 | m_uDepth = img.m_uDepth; |
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86 | m_eFormat = img.m_eFormat; |
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87 | m_uSize = img.m_uSize; |
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88 | m_uFlags = img.m_uFlags; |
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89 | m_ucPixelSize = img.m_ucPixelSize; |
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90 | m_uNumMipmaps = img.m_uNumMipmaps; |
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91 | m_bAutoDelete = img.m_bAutoDelete; |
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92 | //Only create/copy when previous data was not dynamic data |
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93 | if( m_bAutoDelete ) |
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94 | { |
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95 | m_pBuffer = new uchar[ m_uSize ]; |
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96 | memcpy( m_pBuffer, img.m_pBuffer, m_uSize ); |
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97 | } |
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98 | else |
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99 | { |
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100 | m_pBuffer = img.m_pBuffer; |
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101 | } |
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102 | |
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103 | return *this; |
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104 | } |
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105 | |
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106 | //----------------------------------------------------------------------------- |
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107 | Image & Image::flipAroundY() |
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108 | { |
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109 | if( !m_pBuffer ) |
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110 | { |
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111 | OGRE_EXCEPT( |
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112 | Exception::ERR_INTERNAL_ERROR, |
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113 | "Can not flip an unitialized texture", |
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114 | "Image::flipAroundY" ); |
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115 | } |
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116 | |
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117 | m_uNumMipmaps = 0; // Image operations lose precomputed mipmaps |
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118 | |
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119 | uchar *pTempBuffer1 = NULL; |
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120 | ushort *pTempBuffer2 = NULL; |
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121 | uchar *pTempBuffer3 = NULL; |
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122 | uint *pTempBuffer4 = NULL; |
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123 | |
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124 | uchar *src1 = m_pBuffer, *dst1 = NULL; |
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125 | ushort *src2 = (ushort *)m_pBuffer, *dst2 = NULL; |
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126 | uchar *src3 = m_pBuffer, *dst3 = NULL; |
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127 | uint *src4 = (uint *)m_pBuffer, *dst4 = NULL; |
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128 | |
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129 | ushort y; |
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130 | switch (m_ucPixelSize) |
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131 | { |
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132 | case 1: |
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133 | pTempBuffer1 = new uchar[m_uWidth * m_uHeight]; |
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134 | for (y = 0; y < m_uHeight; y++) |
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135 | { |
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136 | dst1 = (pTempBuffer1 + ((y * m_uWidth) + m_uWidth - 1)); |
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137 | for (ushort x = 0; x < m_uWidth; x++) |
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138 | memcpy(dst1--, src1++, sizeof(uchar)); |
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139 | } |
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140 | |
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141 | memcpy(m_pBuffer, pTempBuffer1, m_uWidth * m_uHeight * sizeof(uchar)); |
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142 | delete [] pTempBuffer1; |
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143 | break; |
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144 | |
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145 | case 2: |
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146 | pTempBuffer2 = new ushort[m_uWidth * m_uHeight]; |
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147 | for (y = 0; y < m_uHeight; y++) |
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148 | { |
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149 | dst2 = (pTempBuffer2 + ((y * m_uWidth) + m_uWidth - 1)); |
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150 | for (ushort x = 0; x < m_uWidth; x++) |
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151 | memcpy(dst2--, src2++, sizeof(ushort)); |
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152 | } |
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153 | |
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154 | memcpy(m_pBuffer, pTempBuffer2, m_uWidth * m_uHeight * sizeof(ushort)); |
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155 | delete [] pTempBuffer2; |
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156 | break; |
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157 | |
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158 | case 3: |
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159 | pTempBuffer3 = new uchar[m_uWidth * m_uHeight * 3]; |
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160 | for (y = 0; y < m_uHeight; y++) |
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161 | { |
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162 | size_t offset = ((y * m_uWidth) + (m_uWidth - 1)) * 3; |
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163 | dst3 = pTempBuffer3; |
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164 | dst3 += offset; |
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165 | for (size_t x = 0; x < m_uWidth; x++) |
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166 | { |
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167 | memcpy(dst3, src3, sizeof(uchar) * 3); |
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168 | dst3 -= 3; src3 += 3; |
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169 | } |
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170 | } |
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171 | |
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172 | memcpy(m_pBuffer, pTempBuffer3, m_uWidth * m_uHeight * sizeof(uchar) * 3); |
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173 | delete [] pTempBuffer3; |
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174 | break; |
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175 | |
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176 | case 4: |
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177 | pTempBuffer4 = new uint[m_uWidth * m_uHeight]; |
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178 | for (y = 0; y < m_uHeight; y++) |
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179 | { |
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180 | dst4 = (pTempBuffer4 + ((y * m_uWidth) + m_uWidth - 1)); |
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181 | for (ushort x = 0; x < m_uWidth; x++) |
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182 | memcpy(dst4--, src4++, sizeof(uint)); |
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183 | } |
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184 | |
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185 | memcpy(m_pBuffer, pTempBuffer4, m_uWidth * m_uHeight * sizeof(uint)); |
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186 | delete [] pTempBuffer4; |
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187 | break; |
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188 | |
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189 | default: |
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190 | OGRE_EXCEPT( |
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191 | Exception::ERR_INTERNAL_ERROR, |
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192 | "Unknown pixel depth", |
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193 | "Image::flipAroundY" ); |
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194 | break; |
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195 | } |
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196 | |
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197 | return *this; |
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198 | |
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199 | } |
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200 | |
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201 | //----------------------------------------------------------------------------- |
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202 | Image & Image::flipAroundX() |
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203 | { |
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204 | if( !m_pBuffer ) |
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205 | { |
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206 | OGRE_EXCEPT( |
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207 | Exception::ERR_INTERNAL_ERROR, |
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208 | "Can not flip an unitialized texture", |
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209 | "Image::flipAroundX" ); |
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210 | } |
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211 | |
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212 | m_uNumMipmaps = 0; // Image operations lose precomputed mipmaps |
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213 | |
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214 | size_t rowSpan = m_uWidth * m_ucPixelSize; |
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215 | |
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216 | uchar *pTempBuffer = new uchar[ rowSpan * m_uHeight ]; |
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217 | uchar *ptr1 = m_pBuffer, *ptr2 = pTempBuffer + ( ( m_uHeight - 1 ) * rowSpan ); |
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218 | |
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219 | for( ushort i = 0; i < m_uHeight; i++ ) |
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220 | { |
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221 | memcpy( ptr2, ptr1, rowSpan ); |
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222 | ptr1 += rowSpan; ptr2 -= rowSpan; |
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223 | } |
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224 | |
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225 | memcpy( m_pBuffer, pTempBuffer, rowSpan * m_uHeight); |
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226 | |
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227 | delete [] pTempBuffer; |
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228 | |
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229 | return *this; |
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230 | } |
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231 | |
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232 | //----------------------------------------------------------------------------- |
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233 | Image& Image::loadDynamicImage( uchar* pData, size_t uWidth, size_t uHeight, |
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234 | size_t depth, |
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235 | PixelFormat eFormat, bool autoDelete, |
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236 | size_t numFaces, size_t numMipMaps) |
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237 | { |
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238 | |
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239 | if( m_pBuffer && m_bAutoDelete ) |
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240 | { |
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241 | delete[] m_pBuffer; |
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242 | m_pBuffer = NULL; |
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243 | } |
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244 | // Set image metadata |
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245 | m_uWidth = uWidth; |
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246 | m_uHeight = uHeight; |
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247 | m_uDepth = depth; |
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248 | m_eFormat = eFormat; |
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249 | m_ucPixelSize = static_cast<uchar>(PixelUtil::getNumElemBytes( m_eFormat )); |
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250 | m_uNumMipmaps = numMipMaps; |
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251 | m_uFlags = 0; |
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252 | // Set flags |
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253 | if (PixelUtil::isCompressed(eFormat)) |
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254 | m_uFlags |= IF_COMPRESSED; |
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255 | if (m_uDepth != 1) |
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256 | m_uFlags |= IF_3D_TEXTURE; |
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257 | if(numFaces == 6) |
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258 | m_uFlags |= IF_CUBEMAP; |
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259 | if(numFaces != 6 && numFaces != 1) |
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260 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, |
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261 | "Number of faces currently must be 6 or 1.", |
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262 | "Image::loadDynamicImage"); |
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263 | |
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264 | m_uSize = calculateSize(numMipMaps, numFaces, uWidth, uHeight, depth, eFormat); |
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265 | m_pBuffer = pData; |
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266 | m_bAutoDelete = autoDelete; |
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267 | |
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268 | return *this; |
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269 | |
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270 | } |
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271 | |
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272 | //----------------------------------------------------------------------------- |
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273 | Image & Image::loadRawData( |
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274 | DataStreamPtr& stream, |
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275 | size_t uWidth, size_t uHeight, size_t uDepth, |
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276 | PixelFormat eFormat, |
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277 | size_t numFaces, size_t numMipMaps) |
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278 | { |
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279 | |
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280 | size_t size = calculateSize(numMipMaps, numFaces, uWidth, uHeight, uDepth, eFormat); |
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281 | if (size != stream->size()) |
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282 | { |
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283 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, |
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284 | "Stream size does not match calculated image size", |
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285 | "Image::loadRawData"); |
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286 | } |
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287 | |
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288 | uchar *buffer = new uchar[ size ]; |
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289 | stream->read(buffer, size); |
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290 | |
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291 | return loadDynamicImage(buffer, |
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292 | uWidth, uHeight, uDepth, |
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293 | eFormat, true, numFaces, numMipMaps); |
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294 | |
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295 | } |
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296 | |
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297 | //----------------------------------------------------------------------------- |
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298 | Image & Image::load(const String& strFileName, const String& group) |
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299 | { |
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300 | |
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301 | if( m_pBuffer && m_bAutoDelete ) |
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302 | { |
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303 | delete[] m_pBuffer; |
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304 | m_pBuffer = NULL; |
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305 | } |
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306 | |
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307 | String strExt; |
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308 | |
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309 | size_t pos = strFileName.find_last_of("."); |
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310 | if( pos == String::npos ) |
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311 | OGRE_EXCEPT( |
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312 | Exception::ERR_INVALIDPARAMS, |
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313 | "Unable to load image file '" + strFileName + "' - invalid extension.", |
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314 | "Image::load" ); |
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315 | |
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316 | while( pos != strFileName.length() - 1 ) |
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317 | strExt += strFileName[++pos]; |
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318 | |
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319 | Codec * pCodec = Codec::getCodec(strExt); |
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320 | if( !pCodec ) |
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321 | OGRE_EXCEPT( |
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322 | Exception::ERR_INVALIDPARAMS, |
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323 | "Unable to load image file '" + strFileName + "' - invalid extension.", |
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324 | "Image::load" ); |
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325 | |
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326 | DataStreamPtr encoded = |
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327 | ResourceGroupManager::getSingleton().openResource(strFileName, group); |
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328 | |
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329 | Codec::DecodeResult res = pCodec->decode(encoded); |
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330 | |
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331 | ImageCodec::ImageData* pData = |
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332 | static_cast<ImageCodec::ImageData*>(res.second.getPointer()); |
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333 | |
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334 | // Get the format and compute the pixel size |
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335 | m_uWidth = pData->width; |
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336 | m_uHeight = pData->height; |
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337 | m_uDepth = pData->depth; |
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338 | m_uSize = pData->size; |
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339 | m_eFormat = pData->format; |
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340 | m_uNumMipmaps = pData->num_mipmaps; |
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341 | m_ucPixelSize = static_cast<uchar>(PixelUtil::getNumElemBytes( m_eFormat )); |
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342 | m_uFlags = pData->flags; |
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343 | |
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344 | // re-use the decoded buffer |
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345 | m_pBuffer = res.first->getPtr(); |
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346 | // ensure we don't delete when stream is closed |
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347 | res.first->setFreeOnClose(false); |
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348 | |
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349 | return *this; |
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350 | |
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351 | } |
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352 | //----------------------------------------------------------------------------- |
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353 | void Image::save(const String& filename) |
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354 | { |
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355 | if( !m_pBuffer ) |
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356 | { |
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357 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "No image data loaded", |
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358 | "Image::save"); |
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359 | } |
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360 | |
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361 | String strExt; |
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362 | size_t pos = filename.find_last_of("."); |
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363 | if( pos == String::npos ) |
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364 | OGRE_EXCEPT( |
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365 | Exception::ERR_INVALIDPARAMS, |
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366 | "Unable to save image file '" + filename + "' - invalid extension.", |
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367 | "Image::save" ); |
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368 | |
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369 | while( pos != filename.length() - 1 ) |
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370 | strExt += filename[++pos]; |
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371 | |
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372 | Codec * pCodec = Codec::getCodec(strExt); |
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373 | if( !pCodec ) |
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374 | OGRE_EXCEPT( |
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375 | Exception::ERR_INVALIDPARAMS, |
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376 | "Unable to save image file '" + filename + "' - invalid extension.", |
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377 | "Image::save" ); |
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378 | |
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379 | ImageCodec::ImageData* imgData = new ImageCodec::ImageData(); |
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380 | imgData->format = m_eFormat; |
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381 | imgData->height = m_uHeight; |
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382 | imgData->width = m_uWidth; |
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383 | imgData->depth = m_uDepth; |
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384 | // Wrap in CodecDataPtr, this will delete |
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385 | Codec::CodecDataPtr codeDataPtr(imgData); |
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386 | // Wrap memory, be sure not to delete when stream destroyed |
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387 | MemoryDataStreamPtr wrapper(new MemoryDataStream(m_pBuffer, m_uSize, false)); |
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388 | |
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389 | pCodec->codeToFile(wrapper, filename, codeDataPtr); |
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390 | } |
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391 | //----------------------------------------------------------------------------- |
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392 | Image & Image::load(DataStreamPtr& stream, const String& type ) |
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393 | { |
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394 | if( m_pBuffer && m_bAutoDelete ) |
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395 | { |
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396 | delete[] m_pBuffer; |
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397 | m_pBuffer = NULL; |
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398 | } |
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399 | |
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400 | String strType = type; |
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401 | |
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402 | Codec * pCodec = Codec::getCodec(strType); |
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403 | if( !pCodec ) |
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404 | OGRE_EXCEPT( |
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405 | Exception::ERR_INVALIDPARAMS, |
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406 | "Unable to load image - invalid extension.", |
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407 | "Image::load" ); |
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408 | |
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409 | Codec::DecodeResult res = pCodec->decode(stream); |
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410 | |
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411 | ImageCodec::ImageData* pData = |
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412 | static_cast<ImageCodec::ImageData*>(res.second.getPointer()); |
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413 | |
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414 | m_uWidth = pData->width; |
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415 | m_uHeight = pData->height; |
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416 | m_uDepth = pData->depth; |
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417 | m_uSize = pData->size; |
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418 | m_uNumMipmaps = pData->num_mipmaps; |
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419 | m_uFlags = pData->flags; |
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420 | |
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421 | // Get the format and compute the pixel size |
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422 | m_eFormat = pData->format; |
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423 | m_ucPixelSize = static_cast<uchar>(PixelUtil::getNumElemBytes( m_eFormat )); |
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424 | // Just use internal buffer of returned memory stream |
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425 | m_pBuffer = res.first->getPtr(); |
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426 | // Make sure stream does not delete |
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427 | res.first->setFreeOnClose(false); |
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428 | |
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429 | return *this; |
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430 | } |
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431 | |
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432 | //----------------------------------------------------------------------------- |
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433 | uchar* Image::getData() |
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434 | { |
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435 | return m_pBuffer; |
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436 | } |
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437 | |
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438 | //----------------------------------------------------------------------------- |
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439 | const uchar* Image::getData() const |
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440 | { |
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441 | assert( m_pBuffer ); |
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442 | return m_pBuffer; |
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443 | } |
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444 | |
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445 | //----------------------------------------------------------------------------- |
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446 | size_t Image::getSize() const |
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447 | { |
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448 | return m_uSize; |
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449 | } |
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450 | |
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451 | //----------------------------------------------------------------------------- |
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452 | size_t Image::getNumMipmaps() const |
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453 | { |
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454 | return m_uNumMipmaps; |
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455 | } |
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456 | |
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457 | //----------------------------------------------------------------------------- |
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458 | bool Image::hasFlag(const ImageFlags imgFlag) const |
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459 | { |
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460 | if(m_uFlags & imgFlag) |
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461 | { |
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462 | return true; |
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463 | } |
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464 | else |
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465 | { |
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466 | return false; |
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467 | } |
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468 | } |
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469 | |
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470 | //----------------------------------------------------------------------------- |
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471 | size_t Image::getDepth() const |
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472 | { |
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473 | return m_uDepth; |
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474 | } |
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475 | //----------------------------------------------------------------------------- |
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476 | size_t Image::getWidth() const |
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477 | { |
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478 | return m_uWidth; |
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479 | } |
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480 | |
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481 | //----------------------------------------------------------------------------- |
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482 | size_t Image::getHeight() const |
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483 | { |
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484 | return m_uHeight; |
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485 | } |
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486 | //----------------------------------------------------------------------------- |
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487 | size_t Image::getNumFaces(void) const |
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488 | { |
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489 | if(hasFlag(IF_CUBEMAP)) |
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490 | return 6; |
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491 | return 1; |
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492 | } |
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493 | //----------------------------------------------------------------------------- |
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494 | size_t Image::getRowSpan() const |
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495 | { |
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496 | return m_uWidth * m_ucPixelSize; |
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497 | } |
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498 | |
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499 | //----------------------------------------------------------------------------- |
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500 | PixelFormat Image::getFormat() const |
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501 | { |
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502 | return m_eFormat; |
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503 | } |
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504 | |
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505 | //----------------------------------------------------------------------------- |
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506 | uchar Image::getBPP() const |
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507 | { |
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508 | return m_ucPixelSize * 8; |
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509 | } |
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510 | |
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511 | //----------------------------------------------------------------------------- |
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512 | bool Image::getHasAlpha(void) const |
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513 | { |
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514 | return PixelUtil::getFlags(m_eFormat) & PFF_HASALPHA; |
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515 | } |
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516 | //----------------------------------------------------------------------------- |
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517 | void Image::applyGamma( unsigned char *buffer, Real gamma, size_t size, uchar bpp ) |
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518 | { |
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519 | if( gamma == 1.0f ) |
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520 | return; |
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521 | |
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522 | //NB only 24/32-bit supported |
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523 | if( bpp != 24 && bpp != 32 ) return; |
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524 | |
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525 | uint stride = bpp >> 3; |
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526 | |
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527 | for( size_t i = 0, j = size / stride; i < j; i++, buffer += stride ) |
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528 | { |
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529 | float r, g, b; |
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530 | |
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531 | r = (float)buffer[0]; |
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532 | g = (float)buffer[1]; |
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533 | b = (float)buffer[2]; |
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534 | |
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535 | r = r * gamma; |
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536 | g = g * gamma; |
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537 | b = b * gamma; |
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538 | |
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539 | float scale = 1.0f, tmp; |
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540 | |
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541 | if( r > 255.0f && (tmp=(255.0f/r)) < scale ) |
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542 | scale = tmp; |
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543 | if( g > 255.0f && (tmp=(255.0f/g)) < scale ) |
---|
544 | scale = tmp; |
---|
545 | if( b > 255.0f && (tmp=(255.0f/b)) < scale ) |
---|
546 | scale = tmp; |
---|
547 | |
---|
548 | r *= scale; g *= scale; b *= scale; |
---|
549 | |
---|
550 | buffer[0] = (uchar)r; |
---|
551 | buffer[1] = (uchar)g; |
---|
552 | buffer[2] = (uchar)b; |
---|
553 | } |
---|
554 | } |
---|
555 | //----------------------------------------------------------------------------- |
---|
556 | void Image::resize(ushort width, ushort height, Filter filter) |
---|
557 | { |
---|
558 | // resizing dynamic images is not supported |
---|
559 | assert(m_bAutoDelete); |
---|
560 | assert(m_uDepth == 1); |
---|
561 | |
---|
562 | // reassign buffer to temp image, make sure auto-delete is true |
---|
563 | Image temp; |
---|
564 | temp.loadDynamicImage(m_pBuffer, m_uWidth, m_uHeight, 1, m_eFormat, true); |
---|
565 | // do not delete[] m_pBuffer! temp will destroy it |
---|
566 | |
---|
567 | // set new dimensions, allocate new buffer |
---|
568 | m_uWidth = width; |
---|
569 | m_uHeight = height; |
---|
570 | m_uSize = PixelUtil::getMemorySize(m_uWidth, m_uHeight, 1, m_eFormat); |
---|
571 | m_pBuffer = new uchar[m_uSize]; |
---|
572 | m_uNumMipmaps = 0; // Loses precomputed mipmaps |
---|
573 | |
---|
574 | // scale the image from temp into our resized buffer |
---|
575 | Image::scale(temp.getPixelBox(), getPixelBox(), filter); |
---|
576 | } |
---|
577 | //----------------------------------------------------------------------- |
---|
578 | void Image::scale(const PixelBox &src, const PixelBox &scaled, Filter filter) |
---|
579 | { |
---|
580 | assert(PixelUtil::isAccessible(src.format)); |
---|
581 | assert(PixelUtil::isAccessible(scaled.format)); |
---|
582 | MemoryDataStreamPtr buf; // For auto-delete |
---|
583 | PixelBox temp; |
---|
584 | switch (filter) |
---|
585 | { |
---|
586 | default: |
---|
587 | case FILTER_NEAREST: |
---|
588 | if(src.format == scaled.format) |
---|
589 | { |
---|
590 | // No intermediate buffer needed |
---|
591 | temp = scaled; |
---|
592 | } |
---|
593 | else |
---|
594 | { |
---|
595 | // Allocate temporary buffer of destination size in source format |
---|
596 | temp = PixelBox(scaled.getWidth(), scaled.getHeight(), scaled.getDepth(), src.format); |
---|
597 | buf.bind(new MemoryDataStream(temp.getConsecutiveSize())); |
---|
598 | temp.data = buf->getPtr(); |
---|
599 | } |
---|
600 | // super-optimized: no conversion |
---|
601 | switch (PixelUtil::getNumElemBytes(src.format)) |
---|
602 | { |
---|
603 | case 1: NearestResampler<1>::scale(src, temp); break; |
---|
604 | case 2: NearestResampler<2>::scale(src, temp); break; |
---|
605 | case 3: NearestResampler<3>::scale(src, temp); break; |
---|
606 | case 4: NearestResampler<4>::scale(src, temp); break; |
---|
607 | case 6: NearestResampler<6>::scale(src, temp); break; |
---|
608 | case 8: NearestResampler<8>::scale(src, temp); break; |
---|
609 | case 12: NearestResampler<12>::scale(src, temp); break; |
---|
610 | case 16: NearestResampler<16>::scale(src, temp); break; |
---|
611 | default: |
---|
612 | // never reached |
---|
613 | assert(false); |
---|
614 | } |
---|
615 | if(temp.data != scaled.data) |
---|
616 | { |
---|
617 | // Blit temp buffer |
---|
618 | PixelUtil::bulkPixelConversion(temp, scaled); |
---|
619 | } |
---|
620 | break; |
---|
621 | |
---|
622 | case FILTER_LINEAR: |
---|
623 | case FILTER_BILINEAR: |
---|
624 | switch (src.format) |
---|
625 | { |
---|
626 | case PF_L8: case PF_A8: case PF_BYTE_LA: |
---|
627 | case PF_R8G8B8: case PF_B8G8R8: |
---|
628 | case PF_R8G8B8A8: case PF_B8G8R8A8: |
---|
629 | case PF_A8B8G8R8: case PF_A8R8G8B8: |
---|
630 | case PF_X8B8G8R8: case PF_X8R8G8B8: |
---|
631 | if(src.format == scaled.format) |
---|
632 | { |
---|
633 | // No intermediate buffer needed |
---|
634 | temp = scaled; |
---|
635 | } |
---|
636 | else |
---|
637 | { |
---|
638 | // Allocate temp buffer of destination size in source format |
---|
639 | temp = PixelBox(scaled.getWidth(), scaled.getHeight(), scaled.getDepth(), src.format); |
---|
640 | buf.bind(new MemoryDataStream(temp.getConsecutiveSize())); |
---|
641 | temp.data = buf->getPtr(); |
---|
642 | } |
---|
643 | // super-optimized: byte-oriented math, no conversion |
---|
644 | switch (PixelUtil::getNumElemBytes(src.format)) |
---|
645 | { |
---|
646 | case 1: LinearResampler_Byte<1>::scale(src, temp); break; |
---|
647 | case 2: LinearResampler_Byte<2>::scale(src, temp); break; |
---|
648 | case 3: LinearResampler_Byte<3>::scale(src, temp); break; |
---|
649 | case 4: LinearResampler_Byte<4>::scale(src, temp); break; |
---|
650 | default: |
---|
651 | // never reached |
---|
652 | assert(false); |
---|
653 | } |
---|
654 | if(temp.data != scaled.data) |
---|
655 | { |
---|
656 | // Blit temp buffer |
---|
657 | PixelUtil::bulkPixelConversion(temp, scaled); |
---|
658 | } |
---|
659 | break; |
---|
660 | case PF_FLOAT32_RGB: |
---|
661 | case PF_FLOAT32_RGBA: |
---|
662 | if (scaled.format == PF_FLOAT32_RGB || scaled.format == PF_FLOAT32_RGBA) |
---|
663 | { |
---|
664 | // float32 to float32, avoid unpack/repack overhead |
---|
665 | LinearResampler_Float32::scale(src, scaled); |
---|
666 | break; |
---|
667 | } |
---|
668 | // else, fall through |
---|
669 | default: |
---|
670 | // non-optimized: floating-point math, performs conversion but always works |
---|
671 | LinearResampler::scale(src, scaled); |
---|
672 | } |
---|
673 | break; |
---|
674 | } |
---|
675 | } |
---|
676 | |
---|
677 | //----------------------------------------------------------------------------- |
---|
678 | |
---|
679 | ColourValue Image::getColourAt(int x, int y, int z) |
---|
680 | { |
---|
681 | ColourValue rval; |
---|
682 | PixelUtil::unpackColour(&rval, m_eFormat, &m_pBuffer[m_ucPixelSize * (z * m_uWidth * m_uHeight + m_uWidth * y + x)]); |
---|
683 | return rval; |
---|
684 | } |
---|
685 | |
---|
686 | //----------------------------------------------------------------------------- |
---|
687 | |
---|
688 | PixelBox Image::getPixelBox(size_t face, size_t mipmap) const |
---|
689 | { |
---|
690 | // Image data is arranged as: |
---|
691 | // face 0, top level (mip 0) |
---|
692 | // face 0, mip 1 |
---|
693 | // face 0, mip 2 |
---|
694 | // face 1, top level (mip 0) |
---|
695 | // face 1, mip 1 |
---|
696 | // face 1, mip 2 |
---|
697 | // etc |
---|
698 | if(mipmap > getNumMipmaps()) |
---|
699 | OGRE_EXCEPT( Exception::ERR_NOT_IMPLEMENTED, |
---|
700 | "Mipmap index out of range", |
---|
701 | "Image::getPixelBox" ) ; |
---|
702 | if(face >= getNumFaces()) |
---|
703 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "Face index out of range", |
---|
704 | "Image::getPixelBox"); |
---|
705 | // Calculate mipmap offset and size |
---|
706 | uint8 *offset = const_cast<uint8*>(getData()); |
---|
707 | // Base offset is number of full faces |
---|
708 | size_t width = getWidth(), height=getHeight(), depth=getDepth(); |
---|
709 | size_t numMips = getNumMipmaps(); |
---|
710 | |
---|
711 | // Figure out the offsets |
---|
712 | size_t fullFaceSize = 0; |
---|
713 | size_t finalFaceSize = 0; |
---|
714 | size_t finalWidth, finalHeight, finalDepth; |
---|
715 | for(size_t mip=0; mip <= numMips; ++mip) |
---|
716 | { |
---|
717 | if (mip == mipmap) |
---|
718 | { |
---|
719 | finalFaceSize = fullFaceSize; |
---|
720 | finalWidth = width; |
---|
721 | finalHeight = height; |
---|
722 | finalDepth = depth; |
---|
723 | } |
---|
724 | fullFaceSize += PixelUtil::getMemorySize(width, height, depth, getFormat()); |
---|
725 | |
---|
726 | /// Half size in each dimension |
---|
727 | if(width!=1) width /= 2; |
---|
728 | if(height!=1) height /= 2; |
---|
729 | if(depth!=1) depth /= 2; |
---|
730 | } |
---|
731 | // Advance pointer by number of full faces, plus mip offset into |
---|
732 | offset += face * fullFaceSize; |
---|
733 | offset += finalFaceSize; |
---|
734 | // Return subface as pixelbox |
---|
735 | PixelBox src(finalWidth, finalHeight, finalDepth, getFormat(), offset); |
---|
736 | return src; |
---|
737 | } |
---|
738 | //----------------------------------------------------------------------------- |
---|
739 | size_t Image::calculateSize(size_t mipmaps, size_t faces, size_t width, size_t height, size_t depth, |
---|
740 | PixelFormat format) |
---|
741 | { |
---|
742 | size_t size = 0; |
---|
743 | for(size_t mip=0; mip<=mipmaps; ++mip) |
---|
744 | { |
---|
745 | size += PixelUtil::getMemorySize(width, height, depth, format)*faces; |
---|
746 | if(width!=1) width /= 2; |
---|
747 | if(height!=1) height /= 2; |
---|
748 | if(depth!=1) depth /= 2; |
---|
749 | } |
---|
750 | return size; |
---|
751 | } |
---|
752 | |
---|
753 | } |
---|