Source/System/FileIO/OSB/OSGOSBChunkBlockElement.cpp

   1 /*---------------------------------------------------------------------------*\
   2  *                                OpenSG                                     *
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   5  *                   Copyright (C) 2009 by the OpenSG Forum                  *
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  17  * by the Free Software Foundation, version 2.                               *
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  29 /*---------------------------------------------------------------------------*\
  30  *                                Changes                                    *
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  37 \*---------------------------------------------------------------------------*/
  38
  39 #include "OSGOSBChunkBlockElement.h"
  40
  41 #include "OSGOSBRootElement.h"
  42 #include "OSGChunkBlock.h"
  43
  44 #include "OSGOSBTextureChunkElement.h"
  45 #include "OSGOSBCubeTextureChunkElement.h"
  46 #include "OSGTextureObjChunk.h"
  47 #include "OSGCubeTextureObjChunk.h"
  48 #include "OSGTextureEnvChunk.h"
  49
  50 OSG_USING_NAMESPACE
  51
  52 /*-------------------------------------------------------------------------*/
  53 /* OSBChunkBlockElement                                                    */
  54 /*-------------------------------------------------------------------------*/
  55
  56 /*-------------------------------------------------------------------------*/
  57 /* Static members                                                          */
  58
  59 OSBElementRegistrationHelper<OSBChunkBlockElement>
  60     OSBChunkBlockElement::_regHelper =
  61         OSBElementRegistrationHelper<OSBChunkBlockElement>("ChunkBlock");
  62
  63
  64 /*-------------------------------------------------------------------------*/
  65 /* Constructor                                                             */
  66
  67 OSBChunkBlockElement::OSBChunkBlockElement(OSBRootElement *root) :
  68      Inherited            (root,
  69                            OSGOSBHeaderVersion200),
  70     _mfSlots              (                      ),
  71     _chunksPtrFieldIt     (                      ),
  72     _chunksPtrFieldItValid(false                 )
  73 {
  74 }
  75
  76 /*-------------------------------------------------------------------------*/
  77 /* Destructor                                                              */
  78
  79 OSBChunkBlockElement::~OSBChunkBlockElement(void)
  80 {
  81 }
  82
  83 /*-------------------------------------------------------------------------*/
  84 /* Reading                                                                 */
  85
  86 void OSBChunkBlockElement::read(const std::string &typeName)
  87 {
  88     OSG_OSB_LOG(("OSBChunkBlockElement::read [%s]\n", typeName.c_str()));
  89
  90     BinaryReadHandler *rh = editRoot()->getReadHandler();
  91
  92     UInt8  ptrTypeId;
  93     UInt16 version;
  94
  95     rh->getValue(ptrTypeId);
  96     rh->getValue(version  );
  97
  98     OSG_OSB_LOG(("OSBChunkBlockElement::read: version: [%u]\n", version));
  99
 100     std::string    fieldName;
 101     std::string    fieldTypeName;
 102     UInt32         fieldSize;
 103     PtrFieldListIt ptrFieldIt;
 104
 105     ChunkBlockUnrecPtr pMat = dynamic_pointer_cast<ChunkBlock>(
 106         FieldContainerFactory::the()->createContainer(typeName.c_str()));
 107
 108     setContainer(pMat);
 109
 110     while(readFieldHeader("", fieldName, fieldTypeName, fieldSize))
 111     {
 112         if(fieldName == "chunks")
 113         {
 114             // keep an interator to the _mfChunks field contents
 115             readFieldContent(fieldName, fieldTypeName, fieldSize, "",
 116                              _chunksPtrFieldIt);
 117
 118             _chunksPtrFieldItValid = true;
 119         }
 120         else
 121         {
 122             readFieldContent(fieldName, fieldTypeName, fieldSize, "",
 123                              ptrFieldIt);
 124         }
 125     }
 126 }
 127
 128 void OSBChunkBlockElement::postRead(void)
 129 {
 130     // _mfChunks and _mfSlots have to be kept consistent for ChunkBlock.
 131     // Also TextureChunk is split into TextureObjChunk and TextureObjChunk
 132     // on load, so the slot info has to be duplicated.
 133     // TODO:
 134     // It would be better if that handling could be confined to
 135     // TextureChunkElement, but I've not found a good way to do that and keep
 136     // the information in _mfSlots correct. -- cneumann
 137
 138     const OSBRootElement *root   = getRoot();
 139           ChunkBlock     *chkMat = dynamic_cast<ChunkBlock *>(getContainer());
 140
 141     // No chunks loaded
 142     if(_chunksPtrFieldItValid == false)
 143         return;
 144
 145     PtrFieldInfo::PtrIdStoreConstIt idIt  =
 146         _chunksPtrFieldIt->getIdStore().begin();
 147     PtrFieldInfo::PtrIdStoreConstIt idEnd =
 148         _chunksPtrFieldIt->getIdStore().end  ();
 149
 150     for(UInt32 i = 0; idIt != idEnd; ++idIt, ++i)
 151     {
 152         UInt32 uiId   =  (*idIt) & 0x00FFFFFF;
 153         UInt32 uiSlot = ((*idIt) & 0xFF000000) >> 24;
 154
 155         OSBRootElement::IdElemMapConstIt mapIt =
 156             root->getIdElemMap().find(uiId);
 157
 158         if(mapIt == root->getIdElemMap().end())
 159         {
 160             continue;
 161         }
 162
 163         OSBElementBase *chunkElem = mapIt->second;
 164
 165         // other chunk
 166         StateChunk     *chunk     =
 167             dynamic_cast<StateChunk *>(chunkElem->getContainer());
 168
 169
 170         chkMat->addChunk(chunk, uiSlot);
 171     }
 172
 173     // pointer mapping is already done here for _mfChunks, clear info
 174     _chunksPtrFieldIt->editIdStore     ().clear();
 175     _chunksPtrFieldIt->editBindingStore().clear();
 176 }
 177
 178 /*-------------------------------------------------------------------------*/
 179 /* Writing                                                                 */
 180
 181 void OSBChunkBlockElement::preWrite(FieldContainer * const fc)
 182 {
 183     OSG_OSB_LOG(("OSBChunkBlockElement::preWrite\n"));
 184
 185     if(getContainer() == NULL || fc == NULL)
 186     {
 187         FWARNING(("OSBChunkBlockElement::prewrite: Attempt to write NULL.\n"));
 188         return;
 189     }
 190
 191     preWriteFieldContainer(fc, "");
 192 }
 193
 194 void OSBChunkBlockElement::write(void)
 195 {
 196     OSG_OSB_LOG(("OSBChunkBlockElement::write\n"));
 197
 198     if(getContainer() == NULL)
 199     {
 200         FWARNING(("OSBChunkBlockElement::write: Attempt to write NULL.\n"));
 201         return;
 202     }
 203
 204     BinaryWriteHandler *wh = editRoot()->getWriteHandler();
 205
 206     wh->putValue(getFCPtrType(getContainer()));
 207     wh->putValue(getVersion()                );
 208
 209     ChunkBlock *pCBlock = dynamic_cast<ChunkBlock *>(getContainer());
 210
 211     if(pCBlock != NULL)
 212     {
 213         _mfSlots.clear();
 214
 215         ChunkBlock::MFChunksType::const_iterator cIt  =
 216             pCBlock->getMFChunks()->begin();
 217         ChunkBlock::MFChunksType::const_iterator cEnd =
 218             pCBlock->getMFChunks()->end();
 219
 220         UInt32 cIdx = 0;
 221
 222         for(; cIt != cEnd; ++cIt, ++cIdx)
 223         {
 224             if(*cIt != NULL)
 225             {
 226                 UInt32 uiId  = (*cIt)->getId();
 227                 Int32  iSlot = cIdx - (*cIt)->getClassId();
 228
 229                 if(iSlot != -1)
 230                 {
 231                     uiId |= iSlot << 24;
 232                 }
 233
 234                 _mfSlots.push_back(uiId);
 235             }
 236         }
 237
 238         writeFieldHeader("chunks",
 239                          "MFUnrecStateChunkPtr",
 240                          _mfSlots.size() * sizeof(UInt32));
 241
 242         wh = editRoot()->getWriteHandler();
 243
 244         _mfSlots.copyToBin(*wh);
 245     }
 246
 247     writeFields("'chunks'", true);
 248 }