Merge to XFA: Fix subtle issues in opj_skip_from_memory and add unit tests.

core/src/fxcodec/codec/codec_int.h

Index: core/src/fxcodec/codec/codec_int.h
diff --git a/core/src/fxcodec/codec/codec_int.h b/core/src/fxcodec/codec/codec_int.h
index be71bf8dd9d3075f0039d028ab80d2d6f61ead9f..752eb3f1a57a0da8a36c9821d710cac3ff8bc69d 100644
--- a/core/src/fxcodec/codec/codec_int.h
+++ b/core/src/fxcodec/codec/codec_int.h
@@ -4,9 +4,16 @@
  
 // 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>
 #include <list>
+
+#include "../../../include/fxcodec/fx_codec.h"
 #include "../jbig2/JBig2_Context.h"
+#include "../fx_libopenjpeg/libopenjpeg20/openjpeg.h"  // For OPJ_SIZE_T.
+
 class CCodec_BasicModule : public ICodec_BasicModule
 {
 public:
@@ -144,67 +151,67 @@ public:
     virtual void*		Start();
     virtual void		Finish(void* pContext);
     virtual void		Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size);
-    virtual int			ReadHeader(void* pContext, int* width, int* height, int* nComps, CFX_DIBAttribute* pAttribute = NULL);
+    virtual int			ReadHeader(void* pContext, int* width, int* height, int* nComps, CFX_DIBAttribute* pAttribute = NULL);
     virtual FX_BOOL		StartScanline(void* pContext, int down_scale);
     virtual FX_BOOL		ReadScanline(void* pContext, FX_LPBYTE dest_buf);
     virtual FX_DWORD	GetAvailInput(void* pContext, FX_LPBYTE* avail_buf_ptr);
 protected:
     IFX_JpegProvider* m_pExtProvider;
 };
-#define PNG_ERROR_SIZE 256
-class CCodec_PngModule : public ICodec_PngModule
-{
-public:
-    CCodec_PngModule()
-    {
-        FXSYS_memset8(m_szLastError, '\0', PNG_ERROR_SIZE);
-    }
-
-    virtual void*		Start(void* pModule);
-    virtual void		Finish(void* pContext);
-    virtual FX_BOOL		Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size, CFX_DIBAttribute* pAttribute);
-protected:
-    FX_CHAR				m_szLastError[PNG_ERROR_SIZE];
-};
-class CCodec_GifModule : public ICodec_GifModule
-{
-public:
-    CCodec_GifModule()
-    {
-        FXSYS_memset8(m_szLastError, '\0', 256);
-    }
-    virtual void*		Start(void* pModule);
-    virtual void		Finish(void* pContext);
-    virtual FX_DWORD	GetAvailInput(void* pContext, FX_LPBYTE* avail_buf_ptr);
-    virtual void		Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size);
-
-    virtual FX_INT32	ReadHeader(void* pContext, int* width, int* height,
-                                   int* pal_num, void** pal_pp, int* bg_index, CFX_DIBAttribute* pAttribute);
-
-    virtual FX_INT32	LoadFrameInfo(void* pContext, int* frame_num);
-
-    virtual FX_INT32	LoadFrame(void* pContext, int frame_num, CFX_DIBAttribute* pAttribute);
-
-protected:
-    FX_CHAR				m_szLastError[256];
-};
-class CCodec_BmpModule : public ICodec_BmpModule
-{
-public:
-    CCodec_BmpModule()
-    {
-        FXSYS_memset8(m_szLastError, '\0', 256);
-    }
-    virtual void*		Start(void* pModule);
-    virtual void		Finish(void* pContext);
-    virtual FX_DWORD	GetAvailInput(void* pContext, FX_LPBYTE* avail_buf_ptr);
-    virtual void		Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size);
-    virtual FX_INT32	ReadHeader(void* pContext, FX_INT32* width, FX_INT32* height, FX_BOOL* tb_flag, FX_INT32* components, FX_INT32* pal_num, FX_DWORD** pal_pp, CFX_DIBAttribute* pAttribute);
-    virtual FX_INT32	LoadImage(void* pContext);
-
-protected:
-    FX_CHAR				m_szLastError[256];
-};
+#define PNG_ERROR_SIZE 256
+class CCodec_PngModule : public ICodec_PngModule
+{
+public:
+    CCodec_PngModule()
+    {
+        FXSYS_memset8(m_szLastError, '\0', PNG_ERROR_SIZE);
+    }
+
+    virtual void*		Start(void* pModule);
+    virtual void		Finish(void* pContext);
+    virtual FX_BOOL		Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size, CFX_DIBAttribute* pAttribute);
+protected:
+    FX_CHAR				m_szLastError[PNG_ERROR_SIZE];
+};
+class CCodec_GifModule : public ICodec_GifModule
+{
+public:
+    CCodec_GifModule()
+    {
+        FXSYS_memset8(m_szLastError, '\0', 256);
+    }
+    virtual void*		Start(void* pModule);
+    virtual void		Finish(void* pContext);
+    virtual FX_DWORD	GetAvailInput(void* pContext, FX_LPBYTE* avail_buf_ptr);
+    virtual void		Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size);
+
+    virtual FX_INT32	ReadHeader(void* pContext, int* width, int* height,
+                                   int* pal_num, void** pal_pp, int* bg_index, CFX_DIBAttribute* pAttribute);
+
+    virtual FX_INT32	LoadFrameInfo(void* pContext, int* frame_num);
+
+    virtual FX_INT32	LoadFrame(void* pContext, int frame_num, CFX_DIBAttribute* pAttribute);
+
+protected:
+    FX_CHAR				m_szLastError[256];
+};
+class CCodec_BmpModule : public ICodec_BmpModule
+{
+public:
+    CCodec_BmpModule()
+    {
+        FXSYS_memset8(m_szLastError, '\0', 256);
+    }
+    virtual void*		Start(void* pModule);
+    virtual void		Finish(void* pContext);
+    virtual FX_DWORD	GetAvailInput(void* pContext, FX_LPBYTE* avail_buf_ptr);
+    virtual void		Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size);
+    virtual FX_INT32	ReadHeader(void* pContext, FX_INT32* width, FX_INT32* height, FX_BOOL* tb_flag, FX_INT32* components, FX_INT32* pal_num, FX_DWORD** pal_pp, CFX_DIBAttribute* pAttribute);
+    virtual FX_INT32	LoadImage(void* pContext);
+
+protected:
+    FX_CHAR				m_szLastError[256];
+};
 class CCodec_IccModule : public ICodec_IccModule
 {
 public:
@@ -252,14 +259,14 @@ public:
     FX_BOOL		Decode(void* ctx, FX_LPBYTE dest_data, int pitch, FX_BOOL bTranslateColor, FX_LPBYTE offsets);
     void		DestroyDecoder(void* ctx);
 };
-class CCodec_TiffModule : public ICodec_TiffModule
-{
-public:
-    virtual FX_LPVOID 	CreateDecoder(IFX_FileRead* file_ptr);
-    virtual void		GetFrames(FX_LPVOID ctx, FX_INT32& frames);
-    virtual FX_BOOL		LoadFrameInfo(FX_LPVOID ctx, FX_INT32 frame, FX_DWORD& width, FX_DWORD& height, FX_DWORD& comps, FX_DWORD& bpc, CFX_DIBAttribute* pAttribute = NULL);
-    virtual FX_BOOL		Decode(FX_LPVOID ctx, class CFX_DIBitmap* pDIBitmap);
-    virtual void		DestroyDecoder(FX_LPVOID ctx);
+class CCodec_TiffModule : public ICodec_TiffModule
+{
+public:
+    virtual FX_LPVOID 	CreateDecoder(IFX_FileRead* file_ptr);
+    virtual void		GetFrames(FX_LPVOID ctx, FX_INT32& frames);
+    virtual FX_BOOL		LoadFrameInfo(FX_LPVOID ctx, FX_INT32 frame, FX_DWORD& width, FX_DWORD& height, FX_DWORD& comps, FX_DWORD& bpc, CFX_DIBAttribute* pAttribute = NULL);
+    virtual FX_BOOL		Decode(FX_LPVOID ctx, class CFX_DIBitmap* pDIBitmap);
+    virtual void		DestroyDecoder(FX_LPVOID ctx);
 };
 class CPDF_Jbig2Interface : public CFX_Object, public CJBig2_Module
 {
@@ -335,27 +342,45 @@ public:
     std::list<CJBig2_CachePair> m_SymbolDictCache;
 private:
 };
-class CFX_DIBAttributeExif : public IFX_DIBAttributeExif
-{
-public:
-    CFX_DIBAttributeExif();
-    ~CFX_DIBAttributeExif();
-    virtual FX_BOOL		GetInfo(FX_WORD tag, FX_LPVOID val);
-
-    FX_BOOL ParseExif(CFX_MapPtrTemplate<FX_DWORD, FX_LPBYTE>* pHead, FX_LPBYTE data, FX_DWORD len, CFX_MapPtrTemplate<FX_DWORD, FX_LPBYTE>* pVal);
-
-    typedef FX_WORD (*_Read2Bytes)(FX_LPBYTE data);
-    typedef FX_DWORD (*_Read4Bytes)(FX_LPBYTE data);
-    FX_LPBYTE ParseExifIFH(FX_LPBYTE data, FX_DWORD len, _Read2Bytes* pReadWord, _Read4Bytes* pReadDword);
-    FX_BOOL ParseExifIFD(CFX_MapPtrTemplate<FX_DWORD, FX_LPBYTE>* pMap, FX_LPBYTE data, FX_DWORD len);
-
-    FX_LPBYTE			m_pExifData;
-
-    FX_DWORD			m_dwExifDataLen;
-
-    void				clear();
-    _Read2Bytes m_readWord;
-    _Read4Bytes m_readDword;
-    CFX_MapPtrTemplate<FX_DWORD, FX_LPBYTE> m_TagHead;
-    CFX_MapPtrTemplate<FX_DWORD, FX_LPBYTE> m_TagVal;
-};
+class CFX_DIBAttributeExif : public IFX_DIBAttributeExif
+{
+public:
+    CFX_DIBAttributeExif();
+    ~CFX_DIBAttributeExif();
+    virtual FX_BOOL		GetInfo(FX_WORD tag, FX_LPVOID val);
+
+    FX_BOOL ParseExif(CFX_MapPtrTemplate<FX_DWORD, FX_LPBYTE>* pHead, FX_LPBYTE data, FX_DWORD len, CFX_MapPtrTemplate<FX_DWORD, FX_LPBYTE>* pVal);
+
+    typedef FX_WORD (*_Read2Bytes)(FX_LPBYTE data);
+    typedef FX_DWORD (*_Read4Bytes)(FX_LPBYTE data);
+    FX_LPBYTE ParseExifIFH(FX_LPBYTE data, FX_DWORD len, _Read2Bytes* pReadWord, _Read4Bytes* pReadDword);
+    FX_BOOL ParseExifIFD(CFX_MapPtrTemplate<FX_DWORD, FX_LPBYTE>* pMap, FX_LPBYTE data, FX_DWORD len);
+
+    FX_LPBYTE			m_pExifData;
+
+    FX_DWORD			m_dwExifDataLen;
+
+    void				clear();
+    _Read2Bytes m_readWord;
+    _Read4Bytes m_readDword;
+    CFX_MapPtrTemplate<FX_DWORD, FX_LPBYTE> m_TagHead;
+    CFX_MapPtrTemplate<FX_DWORD, FX_LPBYTE> m_TagVal;
+};
+
+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_