Various changes to JBig2 cache:

core/src/fxcodec/codec/codec_int.h

 // 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
 
 #ifndef CORE_SRC_FXCODEC_CODEC_CODEC_INT_H_
 #define CORE_SRC_FXCODEC_CODEC_CODEC_INT_H_
 
 #include <limits.h>
@@ skipping 256 matching lines @@
   void DestroyDecoder(CJPX_Decoder* pDecoder) override;
 };
 
 class CCodec_Jbig2Context {
  public:
   CCodec_Jbig2Context();
   ~CCodec_Jbig2Context() {}
 
   FX_DWORD m_width;
   FX_DWORD m_height;
-  uint8_t* m_src_buf;
-  FX_DWORD m_src_size;
-  const uint8_t* m_global_data;
-  FX_DWORD m_global_size;
+  CPDF_StreamAcc* m_pGlobalStream;
+  CPDF_StreamAcc* m_pSrcStream;
   uint8_t* m_dest_buf;
   FX_DWORD m_dest_pitch;
   IFX_Pause* m_pPause;
   CJBig2_Context* m_pContext;
   CJBig2_Image* m_dest_image;
 };
 class CCodec_Jbig2Module : public ICodec_Jbig2Module {
  public:
   CCodec_Jbig2Module() {}
   ~CCodec_Jbig2Module() override;
 
   // ICodec_Jbig2Module
   void* CreateJbig2Context() override;
   FXCODEC_STATUS StartDecode(void* pJbig2Context,
+                             CFX_PrivateData* pPrivateData,
                              FX_DWORD width,
                              FX_DWORD height,
-                             const uint8_t* src_buf,
-                             FX_DWORD src_size,
-                             const uint8_t* global_data,
-                             FX_DWORD global_size,
+                             CPDF_StreamAcc* src_stream,
+                             CPDF_StreamAcc* global_stream,
                              uint8_t* dest_buf,
                              FX_DWORD dest_pitch,
                              IFX_Pause* pPause) override;
   FXCODEC_STATUS ContinueDecode(void* pJbig2Context,
                                 IFX_Pause* pPause) override;
   void DestroyJbig2Context(void* pJbig2Context) override;
-
- private:
-  std::list<CJBig2_CachePair> m_SymbolDictCache;
 };
 
 struct DecodeData {
  public:
   DecodeData(unsigned char* src_data, OPJ_SIZE_T src_size)
       : src_data(src_data), src_size(src_size), offset(0) {}
   unsigned char* src_data;
   OPJ_SIZE_T src_size;
   OPJ_SIZE_T offset;
 };
 
 /* Wrappers for C-style callbacks. */
 OPJ_SIZE_T opj_read_from_memory(void* p_buffer,
                                 OPJ_SIZE_T nb_bytes,
                                 void* p_user_data);
 OPJ_SIZE_T opj_write_from_memory(void* p_buffer,
                                  OPJ_SIZE_T nb_bytes,
                                  void* p_user_data);
 OPJ_OFF_T opj_skip_from_memory(OPJ_OFF_T nb_bytes, void* p_user_data);
 OPJ_BOOL opj_seek_from_memory(OPJ_OFF_T nb_bytes, void* p_user_data);
 
 #endif  // CORE_SRC_FXCODEC_CODEC_CODEC_INT_H_