vrtdataset_8h-source.html

gdal库的学习文档

<a name="l00446"></a>00446                                     <span class="keywordtype">int</span> *, <span class="keywordtype">int</span> *, <span class="keywordtype">int</span> *, <span class="keywordtype">int</span> *,
<a name="l00447"></a>00447                                     <span class="keywordtype">int</span> *, <span class="keywordtype">int</span> *, <span class="keywordtype">int</span> *, <span class="keywordtype">int</span> * );
<a name="l00448"></a>00448 
<a name="l00449"></a>00449     <span class="keyword">virtual</span> CPLErr  RasterIO( <span class="keywordtype">int</span> nXOff, <span class="keywordtype">int</span> nYOff, <span class="keywordtype">int</span> nXSize, <span class="keywordtype">int</span> nYSize, 
<a name="l00450"></a>00450                               <span class="keywordtype">void</span> *pData, <span class="keywordtype">int</span> nBufXSize, <span class="keywordtype">int</span> nBufYSize, 
<a name="l00451"></a>00451                               <a class="code" href="gdal_8h.html#22e22ce0a55036a96f652765793fb7a4">GDALDataType</a> eBufType, 
<a name="l00452"></a>00452                               <span class="keywordtype">int</span> nPixelSpace, <span class="keywordtype">int</span> nLineSpace );
<a name="l00453"></a>00453 
<a name="l00454"></a>00454     <span class="keywordtype">void</span>            DstToSrc( <span class="keywordtype">double</span> dfX, <span class="keywordtype">double</span> dfY,
<a name="l00455"></a>00455                               <span class="keywordtype">double</span> &amp;dfXOut, <span class="keywordtype">double</span> &amp;dfYOut );
<a name="l00456"></a>00456     <span class="keywordtype">void</span>            SrcToDst( <span class="keywordtype">double</span> dfX, <span class="keywordtype">double</span> dfY,
<a name="l00457"></a>00457                               <span class="keywordtype">double</span> &amp;dfXOut, <span class="keywordtype">double</span> &amp;dfYOut );
<a name="l00458"></a>00458 
<a name="l00459"></a>00459 };
<a name="l00460"></a>00460 
<a name="l00461"></a>00461 <span class="comment">/************************************************************************/</span>
<a name="l00462"></a>00462 <span class="comment">/*                          VRTAveragedSource                           */</span>
<a name="l00463"></a>00463 <span class="comment">/************************************************************************/</span>
<a name="l00464"></a>00464 
<a name="l00465"></a>00465 <span class="keyword">class </span>VRTAveragedSource : <span class="keyword">public</span> VRTSimpleSource
<a name="l00466"></a>00466 {
<a name="l00467"></a>00467 <span class="keyword">public</span>:
<a name="l00468"></a>00468                     VRTAveragedSource();
<a name="l00469"></a>00469     <span class="keyword">virtual</span> CPLErr  RasterIO( <span class="keywordtype">int</span> nXOff, <span class="keywordtype">int</span> nYOff, <span class="keywordtype">int</span> nXSize, <span class="keywordtype">int</span> nYSize, 
<a name="l00470"></a>00470                               <span class="keywordtype">void</span> *pData, <span class="keywordtype">int</span> nBufXSize, <span class="keywordtype">int</span> nBufYSize, 
<a name="l00471"></a>00471                               <a class="code" href="gdal_8h.html#22e22ce0a55036a96f652765793fb7a4">GDALDataType</a> eBufType, 
<a name="l00472"></a>00472                               <span class="keywordtype">int</span> nPixelSpace, <span class="keywordtype">int</span> nLineSpace );
<a name="l00473"></a>00473     <span class="keyword">virtual</span> <a class="code" href="struct__CPLXMLNode.html">CPLXMLNode</a> *SerializeToXML( <span class="keyword">const</span> <span class="keywordtype">char</span> *pszVRTPath );
<a name="l00474"></a>00474 };
<a name="l00475"></a>00475 
<a name="l00476"></a>00476 <span class="comment">/************************************************************************/</span>
<a name="l00477"></a>00477 <span class="comment">/*                           VRTComplexSource                           */</span>
<a name="l00478"></a>00478 <span class="comment">/************************************************************************/</span>
<a name="l00479"></a>00479 
<a name="l00480"></a>00480 <span class="keyword">class </span>VRTComplexSource : <span class="keyword">public</span> VRTSimpleSource
<a name="l00481"></a>00481 {
<a name="l00482"></a>00482 <span class="keyword">public</span>:
<a name="l00483"></a>00483                    VRTComplexSource();
<a name="l00484"></a>00484     <span class="keyword">virtual</span>        ~VRTComplexSource();
<a name="l00485"></a>00485 
<a name="l00486"></a>00486     <span class="keyword">virtual</span> CPLErr RasterIO( <span class="keywordtype">int</span> nXOff, <span class="keywordtype">int</span> nYOff, <span class="keywordtype">int</span> nXSize, <span class="keywordtype">int</span> nYSize, 
<a name="l00487"></a>00487                              <span class="keywordtype">void</span> *pData, <span class="keywordtype">int</span> nBufXSize, <span class="keywordtype">int</span> nBufYSize, 
<a name="l00488"></a>00488                              <a class="code" href="gdal_8h.html#22e22ce0a55036a96f652765793fb7a4">GDALDataType</a> eBufType, 
<a name="l00489"></a>00489                              <span class="keywordtype">int</span> nPixelSpace, <span class="keywordtype">int</span> nLineSpace );
<a name="l00490"></a>00490     <span class="keyword">virtual</span> <a class="code" href="struct__CPLXMLNode.html">CPLXMLNode</a> *SerializeToXML( <span class="keyword">const</span> <span class="keywordtype">char</span> *pszVRTPath );
<a name="l00491"></a>00491     <span class="keyword">virtual</span> CPLErr XMLInit( <a class="code" href="struct__CPLXMLNode.html">CPLXMLNode</a> *, <span class="keyword">const</span> <span class="keywordtype">char</span> * );
<a name="l00492"></a>00492 
<a name="l00493"></a>00493     <span class="keywordtype">int</span>            bDoScaling;
<a name="l00494"></a>00494     <span class="keywordtype">double</span>         dfScaleOff;
<a name="l00495"></a>00495     <span class="keywordtype">double</span>         dfScaleRatio;
<a name="l00496"></a>00496 
<a name="l00497"></a>00497 };
<a name="l00498"></a>00498 
<a name="l00499"></a>00499 <span class="comment">/************************************************************************/</span>
<a name="l00500"></a>00500 <span class="comment">/*                           VRTFilteredSource                          */</span>
<a name="l00501"></a>00501 <span class="comment">/************************************************************************/</span>
<a name="l00502"></a>00502 
<a name="l00503"></a>00503 <span class="keyword">class </span>VRTFilteredSource : <span class="keyword">public</span> VRTComplexSource
<a name="l00504"></a>00504 {
<a name="l00505"></a>00505 <span class="keyword">private</span>:
<a name="l00506"></a>00506     <span class="keywordtype">int</span>          IsTypeSupported( <a class="code" href="gdal_8h.html#22e22ce0a55036a96f652765793fb7a4">GDALDataType</a> eType );
<a name="l00507"></a>00507 
<a name="l00508"></a>00508 <span class="keyword">protected</span>:
<a name="l00509"></a>00509     <span class="keywordtype">int</span>          nSupportedTypesCount;
<a name="l00510"></a>00510     <a class="code" href="gdal_8h.html#22e22ce0a55036a96f652765793fb7a4">GDALDataType</a> aeSupportedTypes[20];
<a name="l00511"></a>00511 
<a name="l00512"></a>00512     <span class="keywordtype">int</span>          nExtraEdgePixels;
<a name="l00513"></a>00513 
<a name="l00514"></a>00514 <span class="keyword">public</span>:
<a name="l00515"></a>00515             VRTFilteredSource();
<a name="l00516"></a>00516     <span class="keyword">virtual</span> ~VRTFilteredSource();
<a name="l00517"></a>00517 
<a name="l00518"></a>00518     <span class="keywordtype">void</span>    SetExtraEdgePixels( <span class="keywordtype">int</span> );
<a name="l00519"></a>00519     <span class="keywordtype">void</span>    SetFilteringDataTypesSupported( <span class="keywordtype">int</span>, <a class="code" href="gdal_8h.html#22e22ce0a55036a96f652765793fb7a4">GDALDataType</a> * );
<a name="l00520"></a>00520 
<a name="l00521"></a>00521     <span class="keyword">virtual</span> CPLErr  FilterData( <span class="keywordtype">int</span> nXSize, <span class="keywordtype">int</span> nYSize, <a class="code" href="gdal_8h.html#22e22ce0a55036a96f652765793fb7a4">GDALDataType</a> eType, 
<a name="l00522"></a>00522                                 GByte *pabySrcData, GByte *pabyDstData ) = 0;
<a name="l00523"></a>00523 
<a name="l00524"></a>00524     <span class="keyword">virtual</span> CPLErr  RasterIO( <span class="keywordtype">int</span> nXOff, <span class="keywordtype">int</span> nYOff, <span class="keywordtype">int</span> nXSize, <span class="keywordtype">int</span> nYSize, 
<a name="l00525"></a>00525                               <span class="keywordtype">void</span> *pData, <span class="keywordtype">int</span> nBufXSize, <span class="keywordtype">int</span> nBufYSize, 
<a name="l00526"></a>00526                               <a class="code" href="gdal_8h.html#22e22ce0a55036a96f652765793fb7a4">GDALDataType</a> eBufType, 
<a name="l00527"></a>00527                               <span class="keywordtype">int</span> nPixelSpace, <span class="keywordtype">int</span> nLineSpace );
<a name="l00528"></a>00528 };
<a name="l00529"></a>00529 
<a name="l00530"></a>00530 <span class="comment">/************************************************************************/</span>
<a name="l00531"></a>00531 <span class="comment">/*                       VRTKernelFilteredSource                        */</span>
<a name="l00532"></a>00532 <span class="comment">/************************************************************************/</span>
<a name="l00533"></a>00533 
<a name="l00534"></a>00534 <span class="keyword">class </span>VRTKernelFilteredSource : <span class="keyword">public</span> VRTFilteredSource
<a name="l00535"></a>00535 {
<a name="l00536"></a>00536 <span class="keyword">protected</span>:
<a name="l00537"></a>00537     <span class="keywordtype">int</span>     nKernelSize;
<a name="l00538"></a>00538 
<a name="l00539"></a>00539     <span class="keywordtype">double</span>  *padfKernelCoefs;
<a name="l00540"></a>00540 
<a name="l00541"></a>00541     <span class="keywordtype">int</span>     bNormalized;
<a name="l00542"></a>00542 
<a name="l00543"></a>00543 <span class="keyword">public</span>:
<a name="l00544"></a>00544             VRTKernelFilteredSource();
<a name="l00545"></a>00545     <span class="keyword">virtual</span> ~VRTKernelFilteredSource();
<a name="l00546"></a>00546 
<a name="l00547"></a>00547     <span class="keyword">virtual</span> CPLErr  XMLInit( <a class="code" href="struct__CPLXMLNode.html">CPLXMLNode</a> *psTree, <span class="keyword">const</span> <span class="keywordtype">char</span> * );
<a name="l00548"></a>00548     <span class="keyword">virtual</span> <a class="code" href="struct__CPLXMLNode.html">CPLXMLNode</a> *SerializeToXML( <span class="keyword">const</span> <span class="keywordtype">char</span> *pszVRTPath );
<a name="l00549"></a>00549 
<a name="l00550"></a>00550     <span class="keyword">virtual</span> CPLErr  FilterData( <span class="keywordtype">int</span> nXSize, <span class="keywordtype">int</span> nYSize, <a class="code" href="gdal_8h.html#22e22ce0a55036a96f652765793fb7a4">GDALDataType</a> eType, 
<a name="l00551"></a>00551                                 GByte *pabySrcData, GByte *pabyDstData );
<a name="l00552"></a>00552 
<a name="l00553"></a>00553     CPLErr          SetKernel( <span class="keywordtype">int</span> nKernelSize, <span class="keywordtype">double</span> *padfCoefs );
<a name="l00554"></a>00554     <span class="keywordtype">void</span>            SetNormalized( <span class="keywordtype">int</span> );
<a name="l00555"></a>00555 };
<a name="l00556"></a>00556 
<a name="l00557"></a>00557 <span class="comment">/************************************************************************/</span>
<a name="l00558"></a>00558 <span class="comment">/*                       VRTAverageFilteredSource                       */</span>
<a name="l00559"></a>00559 <span class=