Split up JBig2_GeneralDecoder.cpp.

core/src/fxcodec/jbig2/JBig2_Context.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
+#include "JBig2_Context.h"
+
 #include <list>
-#include "JBig2_Context.h"
+
+#include "JBig2_GrdProc.h"
+#include "JBig2_GrrdProc.h"
+#include "JBig2_HtrdProc.h"
+#include "JBig2_PddProc.h"
+#include "JBig2_SddProc.h"
+#include "JBig2_TrdProc.h"
 
 // Implement a very small least recently used (LRU) cache. It is very
 // common for a JBIG2 dictionary to span multiple pages in a PDF file,
 // and we do not want to decode the same dictionary over and over
 // again. We key off of the memory location of the dictionary. The
 // list keeps track of the freshness of entries, with freshest ones
 // at the front. Even a tiny cache size like 2 makes a dramatic
 // difference for typical JBIG2 documents.
-const int kSymbolDictCacheMaxSize = 2;
+static const int kSymbolDictCacheMaxSize = 2;
 
 CJBig2_Context* CJBig2_Context::CreateContext(
     const uint8_t* pGlobalData,
     FX_DWORD dwGlobalLength,
     const uint8_t* pData,
     FX_DWORD dwLength,
     int32_t nStreamType,
     std::list<CJBig2_CachePair>* pSymbolDictCache,
     IFX_Pause* pPause) {
   return new CJBig2_Context(pGlobalData, dwGlobalLength, pData, dwLength,
@@ skipping 462 matching lines @@
       break;
   }
   return JBIG2_SUCCESS;
 }
 
 int32_t CJBig2_Context::parseSymbolDict(CJBig2_Segment* pSegment,
                                         IFX_Pause* pPause) {
   FX_DWORD dwTemp;
   FX_WORD wFlags;
   uint8_t cSDHUFFDH, cSDHUFFDW, cSDHUFFBMSIZE, cSDHUFFAGGINST;
-  CJBig2_HuffmanTable *Table_B1 = NULL, *Table_B2 = NULL, *Table_B3 = NULL,
-                      *Table_B4 = NULL, *Table_B5 = NULL;
+  CJBig2_HuffmanTable* Table_B1 = nullptr;
+  CJBig2_HuffmanTable* Table_B2 = nullptr;
+  CJBig2_HuffmanTable* Table_B3 = nullptr;
+  CJBig2_HuffmanTable* Table_B4 = nullptr;
+  CJBig2_HuffmanTable* Table_B5 = nullptr;
   int32_t i, nIndex, nRet;
-  CJBig2_Segment *pSeg = NULL, *pLRSeg = NULL;
+  CJBig2_Segment* pSeg = nullptr;
+  CJBig2_Segment* pLRSeg = nullptr;
   FX_BOOL bUsed;
-  CJBig2_Image** SDINSYMS = NULL;
-  JBig2ArithCtx *gbContext = NULL, *grContext = NULL;
+  CJBig2_Image** SDINSYMS = nullptr;
+  JBig2ArithCtx* gbContext = nullptr;
+  JBig2ArithCtx* grContext = nullptr;
   CJBig2_ArithDecoder* pArithDecoder;
   CJBig2_SDDProc* pSymbolDictDecoder = new CJBig2_SDDProc();
   const uint8_t* key = pSegment->m_pData;
   FX_BOOL cache_hit = false;
   if (m_pStream->readShortInteger(&wFlags) != 0) {
     nRet = JBIG2_ERROR_TOO_SHORT;
     goto failed;
   }
   pSymbolDictDecoder->SDHUFF = wFlags & 0x0001;
   pSymbolDictDecoder->SDREFAGG = (wFlags >> 1) & 0x0001;
@@ skipping 243 matching lines @@
   FX_Free(grContext);
   return nRet;
 }
 
 int32_t CJBig2_Context::parseTextRegion(CJBig2_Segment* pSegment) {
   FX_DWORD dwTemp;
   FX_WORD wFlags;
   int32_t i, nIndex, nRet;
   JBig2RegionInfo ri;
   CJBig2_Segment* pSeg;
-  CJBig2_Image** SBSYMS = NULL;
-  JBig2HuffmanCode* SBSYMCODES = NULL;
+  CJBig2_Image** SBSYMS = nullptr;
+  JBig2HuffmanCode* SBSYMCODES = nullptr;
   uint8_t cSBHUFFFS, cSBHUFFDS, cSBHUFFDT, cSBHUFFRDW, cSBHUFFRDH, cSBHUFFRDX,
       cSBHUFFRDY, cSBHUFFRSIZE;
-  CJBig2_HuffmanTable *Table_B1 = NULL, *Table_B6 = NULL, *Table_B7 = NULL,
-                      *Table_B8 = NULL, *Table_B9 = NULL, *Table_B10 = NULL,
-                      *Table_B11 = NULL, *Table_B12 = NULL, *Table_B13 = NULL,
-                      *Table_B14 = NULL, *Table_B15 = NULL;
-  JBig2ArithCtx* grContext = NULL;
+  CJBig2_HuffmanTable* Table_B1 = nullptr;
+  CJBig2_HuffmanTable* Table_B6 = nullptr;
+  CJBig2_HuffmanTable* Table_B7 = nullptr;
+  CJBig2_HuffmanTable* Table_B8 = nullptr;
+  CJBig2_HuffmanTable* Table_B9 = nullptr;
+  CJBig2_HuffmanTable* Table_B10 = nullptr;
+  CJBig2_HuffmanTable* Table_B11 = nullptr;
+  CJBig2_HuffmanTable* Table_B12 = nullptr;
+  CJBig2_HuffmanTable* Table_B13 = nullptr;
+  CJBig2_HuffmanTable* Table_B14 = nullptr;
+  CJBig2_HuffmanTable* Table_B15 = nullptr;
+  JBig2ArithCtx* grContext = nullptr;
   CJBig2_ArithDecoder* pArithDecoder;
   CJBig2_TRDProc* pTRD = new CJBig2_TRDProc();
   if ((parseRegionInfo(&ri) != JBIG2_SUCCESS) ||
       (m_pStream->readShortInteger(&wFlags) != 0)) {
     nRet = JBIG2_ERROR_TOO_SHORT;
     goto failed;
   }
   pTRD->SBW = ri.width;
   pTRD->SBH = ri.height;
   pTRD->SBHUFF = wFlags & 0x0001;
@@ skipping 837 matching lines @@
         SBSYMCODES[CURTEMP].code = CURCODE;
         CURCODE = CURCODE + 1;
       }
       CURTEMP = CURTEMP + 1;
     }
     CURLEN = CURLEN + 1;
   }
   FX_Free(LENCOUNT);
   FX_Free(FIRSTCODE);
 }