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<h1>pl2passscale.h</h1><div class="fragment"><pre>00001 <span class="comment">/*</span>
00002 <span class="comment">/--------------------------------------------------------------------</span>
00003 <span class="comment">|</span>
00004 <span class="comment">| $Id: pl2passscale_8h-source.html,v 1.4 2004/09/15 15:26:24 uzadow Exp $</span>
00005 <span class="comment">|</span>
00006 <span class="comment">| Copyright (c) 1996-2002 Ulrich von Zadow</span>
00007 <span class="comment">|</span>
00008 <span class="comment">\--------------------------------------------------------------------</span>
00009 <span class="comment">*/</span>
00010
00011 <span class="preprocessor">#ifndef _2_PASS_SCALE_H_</span>
00012 <span class="preprocessor"></span><span class="preprocessor">#define _2_PASS_SCALE_H_</span>
00013 <span class="preprocessor"></span>
00014 <span class="preprocessor">#include "plcontribdefs.h"</span>
00015 <span class="preprocessor">#include "<a class="code" href="plpaintlibdefs_8h.html">plpaintlibdefs.h</a>"</span>
00016
00017 <span class="preprocessor">#include <math.h></span>
00018
00019 <span class="comment">// Not every math.h defines this :-(.</span>
00020 <span class="preprocessor">#ifndef min</span>
00021 <span class="preprocessor"></span><span class="preprocessor">#define min(a, b) ((a) < (b) ? (a) : (b))</span>
00022 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
00023 <span class="preprocessor"></span>
00024 <span class="preprocessor">#ifndef max</span>
00025 <span class="preprocessor"></span><span class="preprocessor">#define max(a, b) ((a) < (b) ? (b) : (a))</span>
00026 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
00027 <span class="preprocessor"></span>
00028 <span class="keyword">typedef</span> <span class="keyword">struct</span>
00029 <span class="keyword"></span>{
00030 <span class="keywordtype">int</span> *Weights; <span class="comment">// Normalized weights of neighboring pixels</span>
00031 <span class="keywordtype">int</span> Left,Right; <span class="comment">// Bounds of source pixels window</span>
00032 } ContributionType; <span class="comment">// Contirbution information for a single pixel</span>
00033
00034 <span class="keyword">typedef</span> <span class="keyword">struct</span>
00035 <span class="keyword"></span>{
00036 ContributionType *ContribRow; <span class="comment">// Row (or column) of contribution weights</span>
00037 <span class="keywordtype">int</span> WindowSize, <span class="comment">// Filter window size (of affecting source pixels)</span>
00038 LineLength; <span class="comment">// Length of line (no. or rows / cols)</span>
00039 } LineContribType; <span class="comment">// Contribution information for an entire line (row or column)</span>
00040
00041 <span class="keyword">typedef</span> bool (*ProgressAndAbortCallBack)(PLBYTE bPercentComplete);
00042
00043 <span class="keyword">class </span>CDataRGB_UBYTE
00044 {
00045 <span class="keyword">public</span>:
00046 <span class="keyword">typedef</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> _DataType[3];
00047 <span class="keyword">typedef</span> _DataType* _RowType;
00048 <span class="keyword">class </span>_Accumulator {
00049 <span class="keyword">public</span>:
00050 _Accumulator ()
00051 {
00052 val [0] = val [1] = val [2] = 0;
00053 };
00054 <span class="keywordtype">void</span> Accumulate (<span class="keywordtype">int</span> Weight, _DataType &value)
00055 {
00056 val [0] += (Weight * value [0]);
00057 val [1] += (Weight * value [1]);
00058 val [2] += (Weight * value [2]);
00059 };
00060 <span class="keywordtype">void</span> Store (_DataType &value)
00061 {
00062 value [0] = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>) ((val [0] + 128)/256);
00063 value [1] = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>) ((val [1] + 128)/256);
00064 value [2] = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>) ((val [2] + 128)/256);
00065 };
00066 <span class="keywordtype">int</span> val [3];
00067 };
00068 };
00069
00070 <span class="keyword">class </span>CDataRGBA_UBYTE {
00071 <span class="keyword">public</span>:
00072 <span class="keyword">typedef</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> _DataType[4];
00073 <span class="keyword">typedef</span> _DataType* _RowType;
00074 <span class="keyword">class </span>_Accumulator {
00075 <span class="keyword">public</span>:
00076 _Accumulator ()
00077 {
00078 val [0] = val [1] = val [2] = val [3] = 0;
00079 };
00080 <span class="keywordtype">void</span> Accumulate (<span class="keywordtype">int</span> dWeight, _DataType &value)
00081 {
00082 val [0] += (dWeight * (value [0]));
00083 val [1] += (dWeight * (value [1]));
00084 val [2] += (dWeight * (value [2]));
00085 val [3] += (dWeight * (value [3]));
00086 };
00087 <span class="keywordtype">void</span> Store (_DataType &value)
00088 {
00089 value [0] = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>) ((val [0] + 128)/256);
00090 value [1] = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>) ((val [1] + 128)/256);
00091 value [2] = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>) ((val [2] + 128)/256);
00092 value [3] = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>) ((val [3] + 128)/256);
00093 };
00094 <span class="keywordtype">int</span> val [4];
00095 };
00096 };
00097
00098 <span class="keyword">template</span> <<span class="keyword">class</span> DataClass>
00099 <span class="keyword">class </span>C2PassScale
00100 {
00101 <span class="keyword">public</span>:
00102 <span class="keyword">typedef</span> <span class="keyword">typename</span> DataClass::_DataType _DataType;
00103 <span class="keyword">typedef</span> <span class="keyword">typename</span> DataClass::_RowType _RowType;
00104
00105 C2PassScale (<span class="keyword">const</span> PLContribDef& ContribDef,
00106 ProgressAndAbortCallBack callback = NULL)
00107 : m_Callback (callback), m_ContribDef (ContribDef)
00108 {};
00109
00110 <span class="keyword">virtual</span> ~C2PassScale() {};
00111
00112 _RowType * Scale (
00113 _RowType *pOrigImage,
00114 PLUINT uOrigWidth,
00115 PLUINT uOrigHeight,
00116 _RowType *pDstImage,
00117 PLUINT uNewWidth,
00118 PLUINT uNewHeight);
00119
00120 <span class="keyword">private</span>:
00121
00122 ProgressAndAbortCallBack m_Callback;
00123 <span class="keywordtype">bool</span> m_bCanceled;
00124
00125 LineContribType *AllocContributions (PLUINT uLineLength,
00126 PLUINT uWindowSize);
00127
00128 <span class="keywordtype">void</span> FreeContributions (LineContribType * p);
00129
00130 LineContribType *CalcContributions (PLUINT uLineSize,
00131 PLUINT uSrcSize,
00132 <span class="keywordtype">double</span> dScale);
00133
00134 <span class="keywordtype">void</span> ScaleRow (_RowType *pSrc,
00135 PLUINT uSrcWidth,
00136 _RowType *pRes,
00137 PLUINT uResWidth,
00138 PLUINT uRow,
00139 LineContribType *Contrib);
00140
00141 <span class="keywordtype">void</span> HorizScale (_RowType *pSrc,
00142 PLUINT uSrcWidth,
00143 PLUINT uSrcHeight,
00144 _RowType *pDst,
00145 PLUINT uResWidth,
00146 PLUINT uResHeight);
00147
00148 <span class="keywordtype">void</span> VertScale (_RowType *pSrc,
00149 PLUINT uSrcWidth,
00150 PLUINT uSrcHeight,
00151 _RowType *pDst,
00152 PLUINT uResWidth,
00153 PLUINT uResHeight);
00154
00155 <span class="keyword">const</span> PLContribDef& m_ContribDef;
00156 };
00157
00158 <span class="keyword">template</span> <<span class="keyword">class</span> DataClass>
00159 LineContribType *
00160 C2PassScale<DataClass>::AllocContributions (PLUINT uLineLength, PLUINT uWindowSize)
00161 {
00162 LineContribType *res = <span class="keyword">new</span> LineContribType;
00163 <span class="comment">// Init structure header</span>
00164 res->WindowSize = uWindowSize;
00165 res->LineLength = uLineLength;
00166 <span class="comment">// Allocate list of contributions</span>
00167 res->ContribRow = <span class="keyword">new</span> ContributionType[uLineLength];
00168 <span class="keywordflow">for</span> (PLUINT u = 0 ; u < uLineLength ; u++)
00169 {
00170 <span class="comment">// Allocate contributions for every pixel</span>
00171 res->ContribRow[u].Weights = <span class="keyword">new</span> <span class="keywordtype">int</span>[uWindowSize];
00172 }
00173 <span class="keywordflow">return</span> res;
00174 }
00175
00176 <span class="keyword">template</span> <<span class="keyword">class</span> DataClass>
00177 <span class="keywordtype">void</span>
00178 C2PassScale<DataClass>::FreeContributions (LineContribType * p)
00179 {
00180 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> u = 0; u < p->LineLength; u++)
00181 {
00182 <span class="comment">// Free contribs for every pixel</span>
00183 <span class="keyword">delete</span> [] p->ContribRow[u].Weights;
00184 }
00185 <span class="keyword">delete</span> [] p->ContribRow; <span class="comment">// Free list of pixels contribs</span>
00186 <span class="keyword">delete</span> p; <span class="comment">// Free contribs header</span>
00187 }
00188
00189 <span class="keyword">template</span> <<span class="keyword">class</span> DataClass>
00190 LineContribType *
00191 C2PassScale<DataClass>::CalcContributions
00192 (PLUINT uLineSize, PLUINT uSrcSize, <span class="keywordtype">double</span> dScale)
00193 {
00194 <span class="keywordtype">double</span> dWidth;
00195 <span class="keywordtype">double</span> dFScale = 1.0;
00196 <span class="keywordtype">double</span> dFilterWidth = m_ContribDef.GetWidth();
00197
00198 <span class="keywordflow">if</span> (dScale < 1.0)
00199 { <span class="comment">// Minification</span>
00200 dWidth = dFilterWidth / dScale;
00201 dFScale = dScale;
00202 }
00203 <span class="keywordflow">else</span>
00204 { <span class="comment">// Magnification</span>
00205 dWidth= dFilterWidth;
00206 }
00207
00208 <span class="comment">// Window size is the number of sampled pixels</span>
00209 <span class="keywordtype">int</span> iWindowSize = 2 * (<span class="keywordtype">int</span>)ceil(dWidth) + 1;
00210
00211 <span class="comment">// Allocate a new line contributions strucutre</span>
00212 LineContribType *res = AllocContributions (uLineSize, iWindowSize);
00213
00214 <span class="keywordflow">for</span> (PLUINT u = 0; u < uLineSize; u++)
00215 { <span class="comment">// Scan through line of contributions</span>
00216 <span class="keywordtype">double</span> dCenter = (u+0.5)/dScale-0.5; <span class="comment">// Reverse mapping</span>
00217 <span class="comment">// Find the significant edge points that affect the pixel</span>
00218 <span class="keywordtype">int</span> iLeft = max (0, (<span class="keywordtype">int</span>)floor (dCenter - dWidth));
00219 <span class="keywordtype">int</span> iRight = min ((<span class="keywordtype">int</span>)ceil (dCenter + dWidth), <span class="keywordtype">int</span>(uSrcSize) - 1);
00220
00221 <span class="comment">// Cut edge points to fit in filter window in case of spill-off</span>
00222 <span class="keywordflow">if</span> (iRight - iLeft + 1 > iWindowSize)
00223 {
00224 <span class="keywordflow">if</span> (iLeft < (int(uSrcSize) - 1 / 2))
00225 {
00226 iLeft++;
00227 }
00228 <span class="keywordflow">else</span>
00229 {
00230 iRight--;
00231 }
00232 }
00233 <span class="comment">//ets+++ adjusted ileft and iright values not stored in contrib array</span>
00234 res->ContribRow[u].Left = iLeft;
00235 res->ContribRow[u].Right = iRight;
00236 <span class="comment">//ets</span>
00237 <span class="keywordtype">int</span> dTotalWeight = 0; <span class="comment">// Zero sum of weights</span>
00238 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> iSrc = iLeft; iSrc <= iRight; iSrc++)
00239 { <span class="comment">// Calculate weights</span>
00240 <span class="keywordtype">int</span> CurWeight = int (dFScale * (m_ContribDef.Filter (dFScale * (dCenter - (<span class="keywordtype">double</span>)iSrc)))*256);
00241 res->ContribRow[u].Weights[iSrc-iLeft] = CurWeight;
00242 dTotalWeight += CurWeight;
00243 }
00244 PLASSERT (dTotalWeight >= 0); <span class="comment">// An error in the filter function can cause this</span>
00245 <span class="keywordtype">int</span> UsedWeight = 0;
00246 <span class="keywordflow">if</span> (dTotalWeight > 0)
00247 { <span class="comment">// Normalize weight of neighbouring points</span>
00248 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> iSrc = iLeft; iSrc < iRight; iSrc++)
00249 { <span class="comment">// Normalize point</span>
00250 <span class="keywordtype">int</span> CurWeight = (res->ContribRow[u].Weights[iSrc-iLeft]*256)/dTotalWeight;
00251 res->ContribRow[u].Weights[iSrc-iLeft] = CurWeight;
00252 UsedWeight += CurWeight;
00253 }
00254 <span class="comment">// The last point gets everything that's left over so the sum is</span>
00255 <span class="comment">// always correct.</span>
00256 res->ContribRow[u].Weights[iRight-iLeft] = 256 - UsedWeight;
00257 }
00258 }
00259 <span class="keywordflow">return</span> res;
00260 }
00261
00262
00263 <span class="keyword">template</span> <<span class="keyword">class</span> DataClass>
00264 <span class="keywordtype">void</span>
00265 C2PassScale<DataClass>::ScaleRow (_RowType *pSrc, PLUINT uSrcWidth,
00266 _RowType *pRes, PLUINT uResWidth,
00267 PLUINT uRow, LineContribType *Contrib)
00268 {
00269 _DataType *pSrcRow = pSrc[uRow];
00270 _DataType *pDstRow = pRes[uRow];
00271 <span class="keywordflow">for</span> (PLUINT x = 0; x < uResWidth; x++)
00272 { <span class="comment">// Loop through row</span>
00273 <span class="keyword">typename</span> DataClass::_Accumulator a;
00274 <span class="keywordtype">int</span> iLeft = Contrib->ContribRow[x].Left; <span class="comment">// Retrieve left boundries</span>
00275 <span class="keywordtype">int</span> iRight = Contrib->ContribRow[x].Right; <span class="comment">// Retrieve right boundries</span>
00276 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = iLeft; i <= iRight; i++)
00277 { <span class="comment">// Scan between boundries</span>
00278 <span class="comment">// Accumulate weighted effect of each neighboring pixel</span>
00279 a .Accumulate (Contrib->ContribRow[x].Weights[i-iLeft], pSrcRow[i]);
00280 }
00281 a .Store (pDstRow [x]);
00282 }
00283 }
00284
00285 <span class="keyword">template</span> <<span class="keyword">class</span> DataClass>
00286 <span class="keywordtype">void</span>
00287 C2PassScale<DataClass>::HorizScale (_RowType *pSrc, PLUINT uSrcWidth, PLUINT uSrcHeight,
00288 _RowType *pDst, PLUINT uResWidth, PLUINT uResHeight)
00289 {
00290 <span class="keywordflow">if</span> (uResWidth == uSrcWidth)
00291 { <span class="comment">// No scaling required, just copy</span>
00292 <span class="keywordflow">for</span> (PLUINT u = 0; u < uResHeight; u++)
00293 memcpy (pDst[u], pSrc[u], <span class="keyword">sizeof</span> (_DataType) * uSrcWidth);
00294
00295 }
00296 <span class="comment">// Allocate and calculate the contributions</span>
00297 LineContribType * Contrib;
00298 Contrib = CalcContributions (uResWidth, uSrcWidth,
00299 <span class="keywordtype">double</span>(uResWidth) / <span class="keywordtype">double</span>(uSrcWidth));
00300 <span class="keywordflow">for</span> (PLUINT u = 0; u < uResHeight; u++)
00301 { <span class="comment">// Step through rows</span>
00302 <span class="keywordflow">if</span> (NULL != m_Callback)
00303 {
00304 <span class="comment">//</span>
00305 <span class="comment">// Progress and report callback supplied</span>
00306 <span class="comment">//</span>
00307 <span class="keywordflow">if</span> (!m_Callback (PLBYTE(<span class="keywordtype">double</span>(u) / <span class="keywordtype">double</span> (uResHeight) * 50.0)))
00308 {
00309 <span class="comment">//</span>
00310 <span class="comment">// User wished to abort now</span>
00311 <span class="comment">//</span>
00312 m_bCanceled = <span class="keyword">true</span>;
00313 FreeContributions (Contrib); <span class="comment">// Free contributions structure</span>
00314 <span class="keywordflow">return</span>;
00315 }
00316 }
00317
00318 ScaleRow ( pSrc,
00319 uSrcWidth,
00320 pDst,
00321 uResWidth,
00322 u,
00323 Contrib); <span class="comment">// Scale each row</span>
00324 }
00325 FreeContributions (Contrib); <span class="comment">// Free contributions structure</span>
00326 }
00327
00328
00329 <span class="keyword">template</span> <<span class="keyword">class</span> DataClass>
00330 <span class="keywordtype">void</span>
00331 C2PassScale<DataClass>::VertScale (_RowType *pSrc, PLUINT uSrcWidth, PLUINT uSrcHeight,
00332 _RowType *pDst, PLUINT uResWidth, PLUINT uResHeight)
00333 {
00334 PLUINT u;
00335
00336 <span class="keywordflow">if</span> (uSrcHeight == uResHeight)
00337 { <span class="comment">// No scaling required, just copy</span>
00338 <span class="keywordflow">for</span> (u = 0; u < uResHeight; u++)
00339 memcpy (pDst[u], pSrc[u], <span class="keyword">sizeof</span> (_DataType) * uSrcWidth);
00340 }
00341 <span class="comment">// Allocate and calculate the contributions</span>
00342 LineContribType * Contrib = CalcContributions (uResHeight, uSrcHeight, <span class="keywordtype">double</span>(uResHeight) / <span class="keywordtype">double</span>(uSrcHeight));
00343 <span class="keywordflow">for</span> (PLUINT y = 0; y < uResHeight; y++)
00344 { <span class="comment">// Loop through column</span>
00345 <span class="keywordflow">if</span> (NULL != m_Callback)
00346 {
00347 <span class="comment">//</span>
00348 <span class="comment">// Progress and report callback supplied</span>
00349 <span class="comment">//</span>
00350 <span class="keywordflow">if</span> (!m_Callback (PLBYTE(<span class="keywordtype">double</span>(y) / <span class="keywordtype">double</span> (uResHeight) * 50.0) + 50))
00351 {
00352 <span class="comment">//</span>
00353 <span class="comment">// User wished to abort now</span>
00354 <span class="comment">//</span>
00355 m_bCanceled = <span class="keyword">true</span>;
00356 FreeContributions (Contrib); <span class="comment">// Free contributions structure</span>
00357 <span class="keywordflow">return</span>;
00358 }
00359 }
00360 <span class="keywordflow">for</span> (u = 0; u < uResWidth; u++)
00361 { <span class="comment">// Step through columns</span>
00362 <span class="keyword">typename</span> DataClass::_Accumulator a;
00363 <span class="keywordtype">int</span> iLeft = Contrib->ContribRow[y].Left; <span class="comment">// Retrieve left boundries</span>
00364 <span class="keywordtype">int</span> iRight = Contrib->ContribRow[y].Right; <span class="comment">// Retrieve right boundries</span>
00365 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = iLeft; i <= iRight; i++)
00366 { <span class="comment">// Scan between boundries</span>
00367 <span class="comment">// Accumulate weighted effect of each neighboring pixel</span>
00368 a.Accumulate (Contrib->ContribRow[y].Weights[i-iLeft], pSrc[i][u]);
00369 }
00370 a .Store (pDst[y][u]);
00371 }
00372
00373 }
00374 FreeContributions (Contrib); <span class="comment">// Free contributions structure</span>
00375 }
00376
00377
00378 <span class="keyword">template</span> <<span class="keyword">class</span> DataClass>
00379 <span class="keyword">typename</span> C2PassScale<DataClass>::_RowType *
00380 C2PassScale<DataClass>::Scale (_RowType *pOrigImage, PLUINT uOrigWidth, PLUINT uOrigHeight,
00381 _RowType *pDstImage, PLUINT uNewWidth, PLUINT uNewHeight)
00382 {
00383 <span class="comment">// Scale source image horizontally into temporary image</span>
00384 m_bCanceled = <span class="keyword">false</span>;
00385 PLUINT u;
00386
00387 <span class="comment">// Allocate temp image</span>
00388 _RowType *pTemp = <span class="keyword">new</span> _RowType[uOrigHeight];
00389 <span class="keywordflow">for</span> (u = 0; u < uOrigHeight; u++)
00390 pTemp[u] = <span class="keyword">new</span> _DataType[uNewWidth];
00391
00392 HorizScale (pOrigImage,
00393 uOrigWidth,
00394 uOrigHeight,
00395 pTemp,
00396 uNewWidth,
00397 uOrigHeight);
00398 <span class="keywordflow">if</span> (m_bCanceled)
00399 {
00400 <span class="keywordflow">for</span> (u = 0; u < uOrigHeight; u++)
00401 <span class="keyword">delete</span> [] pTemp[u];
00402 <span class="keyword">delete</span> [] pTemp;
00403 <span class="keywordflow">return</span> NULL;
00404 }
00405
00406 <span class="comment">// Scale temporary image vertically into result image</span>
00407 VertScale ( pTemp,
00408 uNewWidth,
00409 uOrigHeight,
00410 pDstImage,
00411 uNewWidth,
00412 uNewHeight);
00413 <span class="keywordflow">for</span> (u = 0; u < uOrigHeight; u++)
00414 <span class="keyword">delete</span> [] pTemp[u];
00415 <span class="keyword">delete</span> [] pTemp;
00416 <span class="keywordflow">if</span> (m_bCanceled)
00417 {
00418 <span class="keywordflow">return</span> NULL;
00419 }
00420 <span class="keywordflow">return</span> pDstImage;
00421 }
00422
00423
00424 <span class="preprocessor">#endif // _2_PASS_SCALE_H_</span>
00425 <span class="preprocessor"></span>
00426 <span class="comment">/*</span>
00427 <span class="comment">/--------------------------------------------------------------------</span>
00428 <span class="comment">|</span>
00429 <span class="comment">| $Log: pl2passscale_8h-source.html,v $
00429 <span class="comment">| Revision 1.4 2004/09/15 15:26:24 uzadow
00429 <span class="comment">| Linux compatibility changes, doc update.
00429 <span class="comment">|</span>
00430 <span class="comment">| Revision 1.9 2004/07/28 13:55:48 artcom</span>
00431 <span class="comment">| Added 24 bpp support to plfilterresizebilinear.</span>
00432 <span class="comment">|</span>
00433 <span class="comment">| Revision 1.8 2002/11/04 22:40:13 uzadow</span>
00434 <span class="comment">| Updated for gcc 3.1</span>
00435 <span class="comment">|</span>
00436 <span class="comment">| Revision 1.7 2002/02/24 13:00:45 uzadow</span>
00437 <span class="comment">| Documentation update; removed buggy PLFilterRotate.</span>
00438 <span class="comment">|</span>
00439 <span class="comment">| Revision 1.6 2001/10/06 22:03:26 uzadow</span>
00440 <span class="comment">| Added PL prefix to basic data types.</span>
00441 <span class="comment">|</span>
00442 <span class="comment">| Revision 1.5 2001/10/03 14:00:29 uzadow</span>
00443 <span class="comment">| Much improved quality in FilterResizeBilinear.</span>
00444 <span class="comment">|</span>
00445 <span class="comment">| Revision 1.4 2001/09/30 17:19:16 uzadow</span>
00446 <span class="comment">| Removed lots of floating-point calculations.</span>
00447 <span class="comment">|</span>
00448 <span class="comment">| Revision 1.3 2001/09/30 16:57:25 uzadow</span>
00449 <span class="comment">| Improved speed of 2passfilter.h, code readability changes.</span>
00450 <span class="comment">|</span>
00451 <span class="comment">| Revision 1.2 2001/09/16 20:57:17 uzadow</span>
00452 <span class="comment">| Linux version name prefix changes</span>
00453 <span class="comment">|</span>
00454 <span class="comment">| Revision 1.1 2001/09/16 19:03:23 uzadow</span>
00455 <span class="comment">| Added global name prefix PL, changed most filenames.</span>
00456 <span class="comment">|</span>
00457 <span class="comment">| Revision 1.8 2000/12/04 23:56:11 uzadow</span>
00458 <span class="comment">| no message</span>
00459 <span class="comment">|</span>
00460 <span class="comment">| Revision 1.7 2000/08/13 12:11:43 Administrator</span>
00461 <span class="comment">| Added experimental DirectDraw-Support</span>
00462 <span class="comment">|</span>
00463 <span class="comment">| Revision 1.6 2000/05/27 16:34:05 Ulrich von Zadow</span>
00464 <span class="comment">| Linux compatibility changes</span>
00465 <span class="comment">|</span>
00466 <span class="comment">| Revision 1.5 2000/01/16 20:43:15 anonymous</span>
00467 <span class="comment">| Removed MFC dependencies</span>
00468 <span class="comment">|</span>
00469 <span class="comment">| Revision 1.4 1999/12/31 17:55:08 Ulrich von Zadow</span>
00470 <span class="comment">| Corrected rounding error.</span>
00471 <span class="comment">|</span>
00472 <span class="comment">| Revision 1.3 1999/12/08 16:31:40 Ulrich von Zadow</span>
00473 <span class="comment">| Unix compatibility</span>
00474 <span class="comment">|</span>
00475 <span class="comment">| Revision 1.2 1999/10/22 21:21:34 Ulrich von Zadow</span>
00476 <span class="comment">| no message</span>
00477 <span class="comment">|</span>
00478 <span class="comment">| Revision 1.1 1999/10/21 16:05:17 Ulrich von Zadow</span>
00479 <span class="comment">| Moved filters to separate directory. Added Crop, Grayscale and</span>
00480 <span class="comment">| GetAlpha filters.</span>
00481 <span class="comment">|</span>
00482 <span class="comment">| Revision 1.1 1999/10/19 21:29:55 Ulrich von Zadow</span>
00483 <span class="comment">| Added filters.</span>
00484 <span class="comment">|</span>
00485 <span class="comment">|</span>
00486 <span class="comment">\--------------------------------------------------------------------</span>
00487 <span class="comment">*/</span>
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Mon Sep 13 16:16:40 2004 for paintlib by
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