core/src/fxcrt/extension.h - pdfium - Git at Google

 // 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_FXCRT_EXTENSION_H_
 #define CORE_SRC_FXCRT_EXTENSION_H_

 #include "core/include/fxcrt/fx_basic.h"
 #include "core/include/fxcrt/fx_safe_types.h"

 class IFXCRT_FileAccess {
  public:
   virtual ~IFXCRT_FileAccess() {}
   virtual FX_BOOL Open(const CFX_ByteStringC& fileName, FX_DWORD dwMode) = 0;
   virtual FX_BOOL Open(const CFX_WideStringC& fileName, FX_DWORD dwMode) = 0;
   virtual void Close() = 0;
   virtual void Release() = 0;
   virtual FX_FILESIZE GetSize() const = 0;
   virtual FX_FILESIZE GetPosition() const = 0;
   virtual FX_FILESIZE SetPosition(FX_FILESIZE pos) = 0;
   virtual size_t Read(void* pBuffer, size_t szBuffer) = 0;
   virtual size_t Write(const void* pBuffer, size_t szBuffer) = 0;
   virtual size_t ReadPos(void* pBuffer, size_t szBuffer, FX_FILESIZE pos) = 0;
   virtual size_t WritePos(const void* pBuffer,
                           size_t szBuffer,
                           FX_FILESIZE pos) = 0;
   virtual FX_BOOL Flush() = 0;
   virtual FX_BOOL Truncate(FX_FILESIZE szFile) = 0;
 };
 IFXCRT_FileAccess* FXCRT_FileAccess_Create();

 class CFX_CRTFileStream final : public IFX_FileStream {
  public:
   CFX_CRTFileStream(IFXCRT_FileAccess* pFA) : m_pFile(pFA), m_dwCount(1) {}
   ~CFX_CRTFileStream() override {
     if (m_pFile) {
       m_pFile->Release();
     }
   }
   virtual IFX_FileStream* Retain() override {
     m_dwCount++;
     return this;
   }
   virtual void Release() override {
     FX_DWORD nCount = --m_dwCount;
     if (!nCount) {
       delete this;
     }
   }
   virtual FX_FILESIZE GetSize() override { return m_pFile->GetSize(); }
   virtual FX_BOOL IsEOF() override { return GetPosition() >= GetSize(); }
   virtual FX_FILESIZE GetPosition() override { return m_pFile->GetPosition(); }
   virtual FX_BOOL ReadBlock(void* buffer,
                             FX_FILESIZE offset,
                             size_t size) override {
     return (FX_BOOL)m_pFile->ReadPos(buffer, size, offset);
   }
   virtual size_t ReadBlock(void* buffer, size_t size) override {
     return m_pFile->Read(buffer, size);
   }
   virtual FX_BOOL WriteBlock(const void* buffer,
                              FX_FILESIZE offset,
                              size_t size) override {
     return (FX_BOOL)m_pFile->WritePos(buffer, size, offset);
   }
   virtual FX_BOOL Flush() override { return m_pFile->Flush(); }

  protected:
   IFXCRT_FileAccess* m_pFile;
   FX_DWORD m_dwCount;
 };

 #define FX_MEMSTREAM_BlockSize (64 * 1024)
 #define FX_MEMSTREAM_Consecutive 0x01
 #define FX_MEMSTREAM_TakeOver 0x02
 class CFX_MemoryStream final : public IFX_MemoryStream {
  public:
   CFX_MemoryStream(FX_BOOL bConsecutive)
       : m_dwCount(1),
         m_nTotalSize(0),
         m_nCurSize(0),
         m_nCurPos(0),
         m_nGrowSize(FX_MEMSTREAM_BlockSize) {
     m_dwFlags =
         FX_MEMSTREAM_TakeOver | (bConsecutive ? FX_MEMSTREAM_Consecutive : 0);
   }
   CFX_MemoryStream(uint8_t* pBuffer, size_t nSize, FX_BOOL bTakeOver)
       : m_dwCount(1),
         m_nTotalSize(nSize),
         m_nCurSize(nSize),
         m_nCurPos(0),
         m_nGrowSize(FX_MEMSTREAM_BlockSize) {
     m_Blocks.Add(pBuffer);
     m_dwFlags =
         FX_MEMSTREAM_Consecutive | (bTakeOver ? FX_MEMSTREAM_TakeOver : 0);
   }
   ~CFX_MemoryStream() override {
     if (m_dwFlags & FX_MEMSTREAM_TakeOver) {
       for (int32_t i = 0; i < m_Blocks.GetSize(); i++) {
         FX_Free((uint8_t*)m_Blocks[i]);
       }
     }
     m_Blocks.RemoveAll();
   }

   // IFX_MemoryStream:
   IFX_FileStream* Retain() override {
     m_dwCount++;
     return this;
   }
   void Release() override {
     FX_DWORD nCount = --m_dwCount;
     if (nCount) {
       return;
     }
     delete this;
   }
   FX_FILESIZE GetSize() override { return (FX_FILESIZE)m_nCurSize; }
   FX_BOOL IsEOF() override { return m_nCurPos >= (size_t)GetSize(); }
   FX_FILESIZE GetPosition() override { return (FX_FILESIZE)m_nCurPos; }
   FX_BOOL ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override {
     if (!buffer || !size) {
       return FALSE;
     }

     FX_SAFE_SIZE_T newPos = size;
     newPos += offset;
     if (!newPos.IsValid() || newPos.ValueOrDefault(0) == 0 ||
         newPos.ValueOrDie() > m_nCurSize) {
       return FALSE;
     }

     m_nCurPos = newPos.ValueOrDie();
     if (m_dwFlags & FX_MEMSTREAM_Consecutive) {
       FXSYS_memcpy(buffer, (uint8_t*)m_Blocks[0] + (size_t)offset, size);
       return TRUE;
     }
     size_t nStartBlock = (size_t)offset / m_nGrowSize;
     offset -= (FX_FILESIZE)(nStartBlock * m_nGrowSize);
     while (size) {
       size_t nRead = m_nGrowSize - (size_t)offset;
       if (nRead > size) {
         nRead = size;
       }
       FXSYS_memcpy(
           buffer, (uint8_t*)m_Blocks[(int)nStartBlock] + (size_t)offset, nRead);
       buffer = ((uint8_t*)buffer) + nRead;
       size -= nRead;
       nStartBlock++;
       offset = 0;
     }
     return TRUE;
   }
   size_t ReadBlock(void* buffer, size_t size) override {
     if (m_nCurPos >= m_nCurSize) {
       return 0;
     }
     size_t nRead = FX_MIN(size, m_nCurSize - m_nCurPos);
     if (!ReadBlock(buffer, (int32_t)m_nCurPos, nRead)) {
       return 0;
     }
     return nRead;
   }
   FX_BOOL WriteBlock(const void* buffer,
                      FX_FILESIZE offset,
                      size_t size) override {
     if (!buffer || !size) {
       return FALSE;
     }
     if (m_dwFlags & FX_MEMSTREAM_Consecutive) {
       FX_SAFE_SIZE_T newPos = size;
       newPos += offset;
       if (!newPos.IsValid())
         return FALSE;

       m_nCurPos = newPos.ValueOrDie();
       if (m_nCurPos > m_nTotalSize) {
         m_nTotalSize =
             (m_nCurPos + m_nGrowSize - 1) / m_nGrowSize * m_nGrowSize;
         if (m_Blocks.GetSize() < 1) {
           void* block = FX_Alloc(uint8_t, m_nTotalSize);
           m_Blocks.Add(block);
         } else {
           m_Blocks[0] = FX_Realloc(uint8_t, m_Blocks[0], m_nTotalSize);
         }
         if (!m_Blocks[0]) {
           m_Blocks.RemoveAll();
           return FALSE;
         }
       }
       FXSYS_memcpy((uint8_t*)m_Blocks[0] + (size_t)offset, buffer, size);
       if (m_nCurSize < m_nCurPos) {
         m_nCurSize = m_nCurPos;
       }
       return TRUE;
     }

     FX_SAFE_SIZE_T newPos = size;
     newPos += offset;
     if (!newPos.IsValid()) {
       return FALSE;
     }

     if (!ExpandBlocks(newPos.ValueOrDie())) {
       return FALSE;
     }
     m_nCurPos = newPos.ValueOrDie();
     size_t nStartBlock = (size_t)offset / m_nGrowSize;
     offset -= (FX_FILESIZE)(nStartBlock * m_nGrowSize);
     while (size) {
       size_t nWrite = m_nGrowSize - (size_t)offset;
       if (nWrite > size) {
         nWrite = size;
       }
       FXSYS_memcpy((uint8_t*)m_Blocks[(int)nStartBlock] + (size_t)offset,
                    buffer, nWrite);
       buffer = ((uint8_t*)buffer) + nWrite;
       size -= nWrite;
       nStartBlock++;
       offset = 0;
     }
     return TRUE;
   }
   FX_BOOL Flush() override { return TRUE; }
   FX_BOOL IsConsecutive() const override {
     return m_dwFlags & FX_MEMSTREAM_Consecutive;
   }
   void EstimateSize(size_t nInitSize, size_t nGrowSize) override {
     if (m_dwFlags & FX_MEMSTREAM_Consecutive) {
       if (m_Blocks.GetSize() < 1) {
         uint8_t* pBlock = FX_Alloc(uint8_t, FX_MAX(nInitSize, 4096));
         m_Blocks.Add(pBlock);
       }
       m_nGrowSize = FX_MAX(nGrowSize, 4096);
     } else if (m_Blocks.GetSize() < 1) {
       m_nGrowSize = FX_MAX(nGrowSize, 4096);
     }
   }
   uint8_t* GetBuffer() const override {
     return m_Blocks.GetSize() ? (uint8_t*)m_Blocks[0] : NULL;
   }
   void AttachBuffer(uint8_t* pBuffer,
                     size_t nSize,
                     FX_BOOL bTakeOver = FALSE) override {
     if (!(m_dwFlags & FX_MEMSTREAM_Consecutive)) {
       return;
     }
     m_Blocks.RemoveAll();
     m_Blocks.Add(pBuffer);
     m_nTotalSize = m_nCurSize = nSize;
     m_nCurPos = 0;
     m_dwFlags =
         FX_MEMSTREAM_Consecutive | (bTakeOver ? FX_MEMSTREAM_TakeOver : 0);
   }
   void DetachBuffer() override {
     if (!(m_dwFlags & FX_MEMSTREAM_Consecutive)) {
       return;
     }
     m_Blocks.RemoveAll();
     m_nTotalSize = m_nCurSize = m_nCurPos = 0;
     m_dwFlags = FX_MEMSTREAM_TakeOver;
   }

  protected:
   CFX_PtrArray m_Blocks;
   FX_DWORD m_dwCount;
   size_t m_nTotalSize;
   size_t m_nCurSize;
   size_t m_nCurPos;
   size_t m_nGrowSize;
   FX_DWORD m_dwFlags;
   FX_BOOL ExpandBlocks(size_t size) {
     if (m_nCurSize < size) {
       m_nCurSize = size;
     }
     if (size <= m_nTotalSize) {
       return TRUE;
     }
     int32_t iCount = m_Blocks.GetSize();
     size = (size - m_nTotalSize + m_nGrowSize - 1) / m_nGrowSize;
     m_Blocks.SetSize(m_Blocks.GetSize() + (int32_t)size);
     while (size--) {
       uint8_t* pBlock = FX_Alloc(uint8_t, m_nGrowSize);
       m_Blocks.SetAt(iCount++, pBlock);
       m_nTotalSize += m_nGrowSize;
     }
     return TRUE;
   }
 };

 #ifdef __cplusplus
 extern "C" {
 #endif
 #define MT_N 848
 #define MT_M 456
 #define MT_Matrix_A 0x9908b0df
 #define MT_Upper_Mask 0x80000000
 #define MT_Lower_Mask 0x7fffffff
 typedef struct _FX_MTRANDOMCONTEXT {
   _FX_MTRANDOMCONTEXT() {
     mti = MT_N + 1;
     bHaveSeed = FALSE;
   }
   FX_DWORD mti;
   FX_BOOL bHaveSeed;
   FX_DWORD mt[MT_N];
 } FX_MTRANDOMCONTEXT, *FX_LPMTRANDOMCONTEXT;
 typedef FX_MTRANDOMCONTEXT const* FX_LPCMTRANDOMCONTEXT;
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
 FX_BOOL FX_GenerateCryptoRandom(FX_DWORD* pBuffer, int32_t iCount);
 #endif
 #ifdef __cplusplus
 }
 #endif

 #endif  // CORE_SRC_FXCRT_EXTENSION_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_FXCRT_EXTENSION_H_
	#define CORE_SRC_FXCRT_EXTENSION_H_

	#include "core/include/fxcrt/fx_basic.h"
	#include "core/include/fxcrt/fx_safe_types.h"

	class IFXCRT_FileAccess {
	public:
	virtual ~IFXCRT_FileAccess() {}
	virtual FX_BOOL Open(const CFX_ByteStringC& fileName, FX_DWORD dwMode) = 0;
	virtual FX_BOOL Open(const CFX_WideStringC& fileName, FX_DWORD dwMode) = 0;
	virtual void Close() = 0;
	virtual void Release() = 0;
	virtual FX_FILESIZE GetSize() const = 0;
	virtual FX_FILESIZE GetPosition() const = 0;
	virtual FX_FILESIZE SetPosition(FX_FILESIZE pos) = 0;
	virtual size_t Read(void* pBuffer, size_t szBuffer) = 0;
	virtual size_t Write(const void* pBuffer, size_t szBuffer) = 0;
	virtual size_t ReadPos(void* pBuffer, size_t szBuffer, FX_FILESIZE pos) = 0;
	virtual size_t WritePos(const void* pBuffer,
	size_t szBuffer,
	FX_FILESIZE pos) = 0;
	virtual FX_BOOL Flush() = 0;
	virtual FX_BOOL Truncate(FX_FILESIZE szFile) = 0;
	};
	IFXCRT_FileAccess* FXCRT_FileAccess_Create();

	class CFX_CRTFileStream final : public IFX_FileStream {
	public:
	CFX_CRTFileStream(IFXCRT_FileAccess* pFA) : m_pFile(pFA), m_dwCount(1) {}
	~CFX_CRTFileStream() override {
	if (m_pFile) {
	m_pFile->Release();
	}
	}
	virtual IFX_FileStream* Retain() override {
	m_dwCount++;
	return this;
	}
	virtual void Release() override {
	FX_DWORD nCount = --m_dwCount;
	if (!nCount) {
	delete this;
	}
	}
	virtual FX_FILESIZE GetSize() override { return m_pFile->GetSize(); }
	virtual FX_BOOL IsEOF() override { return GetPosition() >= GetSize(); }
	virtual FX_FILESIZE GetPosition() override { return m_pFile->GetPosition(); }
	virtual FX_BOOL ReadBlock(void* buffer,
	FX_FILESIZE offset,
	size_t size) override {
	return (FX_BOOL)m_pFile->ReadPos(buffer, size, offset);
	}
	virtual size_t ReadBlock(void* buffer, size_t size) override {
	return m_pFile->Read(buffer, size);
	}
	virtual FX_BOOL WriteBlock(const void* buffer,
	FX_FILESIZE offset,
	size_t size) override {
	return (FX_BOOL)m_pFile->WritePos(buffer, size, offset);
	}
	virtual FX_BOOL Flush() override { return m_pFile->Flush(); }

	protected:
	IFXCRT_FileAccess* m_pFile;
	FX_DWORD m_dwCount;
	};

	#define FX_MEMSTREAM_BlockSize (64 * 1024)
	#define FX_MEMSTREAM_Consecutive 0x01
	#define FX_MEMSTREAM_TakeOver 0x02
	class CFX_MemoryStream final : public IFX_MemoryStream {
	public:
	CFX_MemoryStream(FX_BOOL bConsecutive)
	: m_dwCount(1),
	m_nTotalSize(0),
	m_nCurSize(0),
	m_nCurPos(0),
	m_nGrowSize(FX_MEMSTREAM_BlockSize) {
	m_dwFlags =
	FX_MEMSTREAM_TakeOver \| (bConsecutive ? FX_MEMSTREAM_Consecutive : 0);
	}
	CFX_MemoryStream(uint8_t* pBuffer, size_t nSize, FX_BOOL bTakeOver)
	: m_dwCount(1),
	m_nTotalSize(nSize),
	m_nCurSize(nSize),
	m_nCurPos(0),
	m_nGrowSize(FX_MEMSTREAM_BlockSize) {
	m_Blocks.Add(pBuffer);
	m_dwFlags =
	FX_MEMSTREAM_Consecutive \| (bTakeOver ? FX_MEMSTREAM_TakeOver : 0);
	}
	~CFX_MemoryStream() override {
	if (m_dwFlags & FX_MEMSTREAM_TakeOver) {
	for (int32_t i = 0; i < m_Blocks.GetSize(); i++) {
	FX_Free((uint8_t*)m_Blocks[i]);
	}
	}
	m_Blocks.RemoveAll();
	}

	// IFX_MemoryStream:
	IFX_FileStream* Retain() override {
	m_dwCount++;
	return this;
	}
	void Release() override {
	FX_DWORD nCount = --m_dwCount;
	if (nCount) {
	return;
	}
	delete this;
	}
	FX_FILESIZE GetSize() override { return (FX_FILESIZE)m_nCurSize; }
	FX_BOOL IsEOF() override { return m_nCurPos >= (size_t)GetSize(); }
	FX_FILESIZE GetPosition() override { return (FX_FILESIZE)m_nCurPos; }
	FX_BOOL ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override {
	if (!buffer \|\| !size) {
	return FALSE;
	}

	FX_SAFE_SIZE_T newPos = size;
	newPos += offset;
	if (!newPos.IsValid() \|\| newPos.ValueOrDefault(0) == 0 \|\|
	newPos.ValueOrDie() > m_nCurSize) {
	return FALSE;
	}

	m_nCurPos = newPos.ValueOrDie();
	if (m_dwFlags & FX_MEMSTREAM_Consecutive) {
	FXSYS_memcpy(buffer, (uint8_t*)m_Blocks[0] + (size_t)offset, size);
	return TRUE;
	}
	size_t nStartBlock = (size_t)offset / m_nGrowSize;
	offset -= (FX_FILESIZE)(nStartBlock * m_nGrowSize);
	while (size) {
	size_t nRead = m_nGrowSize - (size_t)offset;
	if (nRead > size) {
	nRead = size;
	}
	FXSYS_memcpy(
	buffer, (uint8_t*)m_Blocks[(int)nStartBlock] + (size_t)offset, nRead);
	buffer = ((uint8_t*)buffer) + nRead;
	size -= nRead;
	nStartBlock++;
	offset = 0;
	}
	return TRUE;
	}
	size_t ReadBlock(void* buffer, size_t size) override {
	if (m_nCurPos >= m_nCurSize) {
	return 0;
	}
	size_t nRead = FX_MIN(size, m_nCurSize - m_nCurPos);
	if (!ReadBlock(buffer, (int32_t)m_nCurPos, nRead)) {
	return 0;
	}
	return nRead;
	}
	FX_BOOL WriteBlock(const void* buffer,
	FX_FILESIZE offset,
	size_t size) override {
	if (!buffer \|\| !size) {
	return FALSE;
	}
	if (m_dwFlags & FX_MEMSTREAM_Consecutive) {
	FX_SAFE_SIZE_T newPos = size;
	newPos += offset;
	if (!newPos.IsValid())
	return FALSE;

	m_nCurPos = newPos.ValueOrDie();
	if (m_nCurPos > m_nTotalSize) {
	m_nTotalSize =
	(m_nCurPos + m_nGrowSize - 1) / m_nGrowSize * m_nGrowSize;
	if (m_Blocks.GetSize() < 1) {
	void* block = FX_Alloc(uint8_t, m_nTotalSize);
	m_Blocks.Add(block);
	} else {
	m_Blocks[0] = FX_Realloc(uint8_t, m_Blocks[0], m_nTotalSize);
	}
	if (!m_Blocks[0]) {
	m_Blocks.RemoveAll();
	return FALSE;
	}
	}
	FXSYS_memcpy((uint8_t*)m_Blocks[0] + (size_t)offset, buffer, size);
	if (m_nCurSize < m_nCurPos) {
	m_nCurSize = m_nCurPos;
	}
	return TRUE;
	}

	FX_SAFE_SIZE_T newPos = size;
	newPos += offset;
	if (!newPos.IsValid()) {
	return FALSE;
	}

	if (!ExpandBlocks(newPos.ValueOrDie())) {
	return FALSE;
	}
	m_nCurPos = newPos.ValueOrDie();
	size_t nStartBlock = (size_t)offset / m_nGrowSize;
	offset -= (FX_FILESIZE)(nStartBlock * m_nGrowSize);
	while (size) {
	size_t nWrite = m_nGrowSize - (size_t)offset;
	if (nWrite > size) {
	nWrite = size;
	}
	FXSYS_memcpy((uint8_t*)m_Blocks[(int)nStartBlock] + (size_t)offset,
	buffer, nWrite);
	buffer = ((uint8_t*)buffer) + nWrite;
	size -= nWrite;
	nStartBlock++;
	offset = 0;
	}
	return TRUE;
	}
	FX_BOOL Flush() override { return TRUE; }
	FX_BOOL IsConsecutive() const override {
	return m_dwFlags & FX_MEMSTREAM_Consecutive;
	}
	void EstimateSize(size_t nInitSize, size_t nGrowSize) override {
	if (m_dwFlags & FX_MEMSTREAM_Consecutive) {
	if (m_Blocks.GetSize() < 1) {
	uint8_t* pBlock = FX_Alloc(uint8_t, FX_MAX(nInitSize, 4096));
	m_Blocks.Add(pBlock);
	}
	m_nGrowSize = FX_MAX(nGrowSize, 4096);
	} else if (m_Blocks.GetSize() < 1) {
	m_nGrowSize = FX_MAX(nGrowSize, 4096);
	}
	}
	uint8_t* GetBuffer() const override {
	return m_Blocks.GetSize() ? (uint8_t*)m_Blocks[0] : NULL;
	}
	void AttachBuffer(uint8_t* pBuffer,
	size_t nSize,
	FX_BOOL bTakeOver = FALSE) override {
	if (!(m_dwFlags & FX_MEMSTREAM_Consecutive)) {
	return;
	}
	m_Blocks.RemoveAll();
	m_Blocks.Add(pBuffer);
	m_nTotalSize = m_nCurSize = nSize;
	m_nCurPos = 0;
	m_dwFlags =
	FX_MEMSTREAM_Consecutive \| (bTakeOver ? FX_MEMSTREAM_TakeOver : 0);
	}
	void DetachBuffer() override {
	if (!(m_dwFlags & FX_MEMSTREAM_Consecutive)) {
	return;
	}
	m_Blocks.RemoveAll();
	m_nTotalSize = m_nCurSize = m_nCurPos = 0;
	m_dwFlags = FX_MEMSTREAM_TakeOver;
	}

	protected:
	CFX_PtrArray m_Blocks;
	FX_DWORD m_dwCount;
	size_t m_nTotalSize;
	size_t m_nCurSize;
	size_t m_nCurPos;
	size_t m_nGrowSize;
	FX_DWORD m_dwFlags;
	FX_BOOL ExpandBlocks(size_t size) {
	if (m_nCurSize < size) {
	m_nCurSize = size;
	}
	if (size <= m_nTotalSize) {
	return TRUE;
	}
	int32_t iCount = m_Blocks.GetSize();
	size = (size - m_nTotalSize + m_nGrowSize - 1) / m_nGrowSize;
	m_Blocks.SetSize(m_Blocks.GetSize() + (int32_t)size);
	while (size--) {
	uint8_t* pBlock = FX_Alloc(uint8_t, m_nGrowSize);
	m_Blocks.SetAt(iCount++, pBlock);
	m_nTotalSize += m_nGrowSize;
	}
	return TRUE;
	}
	};

	#ifdef __cplusplus
	extern "C" {
	#endif
	#define MT_N 848
	#define MT_M 456
	#define MT_Matrix_A 0x9908b0df
	#define MT_Upper_Mask 0x80000000
	#define MT_Lower_Mask 0x7fffffff
	typedef struct _FX_MTRANDOMCONTEXT {
	_FX_MTRANDOMCONTEXT() {
	mti = MT_N + 1;
	bHaveSeed = FALSE;
	}
	FX_DWORD mti;
	FX_BOOL bHaveSeed;
	FX_DWORD mt[MT_N];
	} FX_MTRANDOMCONTEXT, *FX_LPMTRANDOMCONTEXT;
	typedef FX_MTRANDOMCONTEXT const* FX_LPCMTRANDOMCONTEXT;
	#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
	FX_BOOL FX_GenerateCryptoRandom(FX_DWORD* pBuffer, int32_t iCount);
	#endif
	#ifdef __cplusplus
	}
	#endif

	#endif // CORE_SRC_FXCRT_EXTENSION_H_