diff --git a/LibCmo/CK2/CKContext.cpp b/LibCmo/CK2/CKContext.cpp
index a7af4e9..5fb86cd 100644
--- a/LibCmo/CK2/CKContext.cpp
+++ b/LibCmo/CK2/CKContext.cpp
@@ -87,11 +87,17 @@ namespace LibCmo::CK2 {
 	}
 
 	ObjImpls::CKObject* GeneralPrevFinder(XContainer::XObjectPointerArray& objptrs, ObjImpls::CKObject* previous) {
-		auto finder = std::find(objptrs.begin(), objptrs.end(), previous);
-		if (finder == objptrs.end()) return nullptr;
-		++finder;
-		if (finder == objptrs.end()) return nullptr;
-		return *finder;
+		if (objptrs.empty()) return nullptr;
+
+		if (previous == nullptr) {
+			return objptrs.front();
+		} else {
+			auto finder = std::find(objptrs.begin(), objptrs.end(), previous);
+			if (finder == objptrs.end()) return nullptr;
+			++finder;
+			if (finder == objptrs.end()) return nullptr;
+			return *finder;
+		}
 	}
 	ObjImpls::CKObject* CKContext::GetObjectByName(CKSTRING name, ObjImpls::CKObject* previous) {
 		if (name == nullptr) return nullptr;
diff --git a/LibCmo/CK2/CKTypes.hpp b/LibCmo/CK2/CKTypes.hpp
index 457e04f..cd7957c 100644
--- a/LibCmo/CK2/CKTypes.hpp
+++ b/LibCmo/CK2/CKTypes.hpp
@@ -262,12 +262,11 @@ namespace LibCmo::CK2 {
 	//class CKFile;
 	class CKDependencies;
 	class CKDependenciesContext;
-	class CKPluginManager;
 	class CKDebugContext;
 	class CKObjectArray;
 	class CKObjectDeclaration;
 	//class CKContext;
-	struct CKBitmapProperties;
+	//struct CKBitmapProperties;
 	class CKVertexBuffer;
 
 	//--- Managers
@@ -284,6 +283,13 @@ namespace LibCmo::CK2 {
 		class CKPathManager;
 		class CKVariableManager;
 		class CKSceneObjectDesc;
+		class CKPluginManager;
+	}
+
+	namespace DataHandlers {
+		class CKBitmapHandler;
+		class CKMovieHandler;
+		class CKSoundHandler;
 	}
 
 	//--- Important classes
@@ -360,5 +366,41 @@ namespace LibCmo::CK2 {
 		}
 	};
 
+	
+	/**
+	 * The struct describe the bitmap handler's infomation,
+	 * including its GUID and supported file extension.
+	 * This struct also will store some parameters related to bitmap handler,
+	 * such as jpeg compress level and etc. But currently there are no
+	 * such parameters.
+	*/
+	struct CKBitmapProperties {
+		CKBitmapProperties() :
+			m_ReaderGuid(), m_Ext(3, '\0') {}
+		CKBitmapProperties(CKGUID& guid, const char* ext) :
+			m_ReaderGuid(guid), m_Ext(3, '\0') {
+			SetExt(ext);
+		}
+		LIBCMO_DEFAULT_COPY_MOVE(CKBitmapProperties);
+
+		void SetExt(const char* s) {
+			if (s == nullptr) {
+				m_Ext[0] = '\0';
+			} else {
+				if (s[0] == '.') ++s;	// skip dot
+				size_t len = std::strlen(s);
+				if (len > m_Ext.size()) len = m_Ext.size();
+				std::memcpy(m_Ext.data(), s, len);
+			}
+		}
+
+		CKSTRING ExtToCKSTRING() {
+			return m_Ext.c_str();
+		}
+
+		CKGUID m_ReaderGuid; /**< CKGUID that uniquely identifies the reader that created this properties structure */
+		std::string m_Ext; /**< File Extension of the image being described by this structure */
+	};
+
 
 }
diff --git a/LibCmo/CK2/DataHandlers/CKBitmapHandler.cpp b/LibCmo/CK2/DataHandlers/CKBitmapHandler.cpp
new file mode 100644
index 0000000..7cbec6b
--- /dev/null
+++ b/LibCmo/CK2/DataHandlers/CKBitmapHandler.cpp
@@ -0,0 +1,274 @@
+#include "CKBitmapHandler.hpp"
+#include "stb_image.h"
+#include "stb_image_write.h"
+#include "stb_image_resize.h"
+
+namespace LibCmo::CK2::DataHandlers {
+
+	static void RGBAToARGB(CK2::CKDWORD count, const void* _rgba, void* _argb) {
+		const char* rgba = reinterpret_cast<const char*>(_rgba);
+		char* argb = reinterpret_cast<char*>(_argb);
+		// copy RGB
+		VxMath::VxCopyStructure(
+			count,
+			argb + sizeof(uint8_t),
+			4 * sizeof(uint8_t),
+			3 * sizeof(uint8_t),
+			rgba,
+			4 * sizeof(uint8_t)
+		);
+		// copy A
+		VxMath::VxCopyStructure(
+			count,
+			argb,
+			4 * sizeof(uint8_t),
+			sizeof(uint8_t),
+			rgba + (3 * sizeof(uint8_t)),
+			4 * sizeof(uint8_t)
+		);
+	}
+
+	static void ARGBToRGBA(CK2::CKDWORD count, const void* _argb, void* _rgba) {
+		const char* argb = reinterpret_cast<const char*>(_argb);
+		char* rgba = reinterpret_cast<char*>(_rgba);
+		// copy RGB
+		VxMath::VxCopyStructure(
+			count,
+			rgba,
+			4 * sizeof(uint8_t),
+			3 * sizeof(uint8_t),
+			argb + sizeof(uint8_t),
+			4 * sizeof(uint8_t)
+		);
+		// copy A
+		VxMath::VxCopyStructure(
+			count,
+			rgba + (3 * sizeof(uint8_t)),
+			4 * sizeof(uint8_t),
+			sizeof(uint8_t),
+			argb,
+			4 * sizeof(uint8_t)
+		);
+	}
+
+	static void PostRead(stbi_uc* data, int x, int y, VxMath::VxImageDescEx* read_image) {
+		// scale image if need
+		if (x != read_image->GetWidth() || y != read_image->GetHeight()) {
+			// alloc
+			CKBYTE* newdata = new CKBYTE[read_image->GetImageSize()];
+			// resize
+			stbir_resize(
+				data, x, y, 0,
+				newdata, static_cast<int>(read_image->GetWidth()), static_cast<int>(read_image->GetHeight()), 0,
+				STBIR_TYPE_UINT8, 4, STBIR_ALPHA_CHANNEL_NONE, 0,	// no alpha channel, mean we treat alpha channel as a normal color factor.
+				STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP,
+				STBIR_FILTER_BOX, STBIR_FILTER_BOX,
+				STBIR_COLORSPACE_SRGB, nullptr
+			);
+			// copy data
+			RGBAToARGB(read_image->GetPixelCount(), newdata, read_image->GetImage());
+			// free
+			delete[] newdata;
+		} else {
+			// copy data RGBA -> ARGB
+			RGBAToARGB(read_image->GetPixelCount(), data, read_image->GetImage());
+		}
+	}
+	static bool StbReadFile(CKSTRING u8filename, VxMath::VxImageDescEx* read_image) {
+		if (u8filename == nullptr || read_image == nullptr) return false;
+		FILE* fs = EncodingHelper::U8FOpen(u8filename, "rb");
+		if (fs == nullptr) return false;
+
+		// read data
+		int x, y, channels_in_file;
+		stbi_uc* data = stbi_load_from_file(fs, &x, &y, &channels_in_file, 4);	// 4 == RGBA8888
+		std::fclose(fs);
+		if (data == nullptr) return false;
+
+		// scale image if need
+		PostRead(data, x, y, read_image);
+
+		// clear data
+		stbi_image_free(data);
+		return true;
+	}
+	static bool StbReadMemory(const void* memory, CKDWORD size, VxMath::VxImageDescEx* read_image) {
+		// same like ReadFile
+		if (memory == nullptr || read_image == nullptr) return false;
+
+		// read data
+		int x, y, channels_in_file;
+		stbi_uc* data = stbi_load_from_memory(
+			reinterpret_cast<const stbi_uc*>(memory),
+			static_cast<int>(size),
+			&x, &y, &channels_in_file, 4	// 4 == RGBA8888
+		);
+		if (data == nullptr) return false;
+
+		// scale image if need
+		PostRead(data, x, y, read_image);
+
+		// clear data
+		stbi_image_free(data);
+		return true;
+	}
+
+	struct FileSaveContext {
+		FileSaveContext(FILE* fs) :
+			m_Fs(fs), m_Counter(0) {}
+		FILE* m_Fs;
+		size_t m_Counter;
+	};
+	static void FileWriteFunction(void* context, void* data, int size) {
+		FileSaveContext* ctx = reinterpret_cast<FileSaveContext*>(context);
+		if (ctx->m_Fs != nullptr) {
+			std::fwrite(data, sizeof(char), size, ctx->m_Fs);
+		}
+		ctx->m_Counter += size;
+	}
+	struct MemorySaveContext {
+		MemorySaveContext(void* mem) :
+			m_Mem(mem), m_Counter(0) {}
+		void* m_Mem;
+		size_t m_Counter;
+	};
+	static void MemoryWriteFunction(void* context, void* data, int size) {
+		MemorySaveContext* ctx = reinterpret_cast<MemorySaveContext*>(context);
+		if (ctx->m_Mem != nullptr) {
+			std::memcpy(ctx->m_Mem, data, size);
+			ctx->m_Mem = reinterpret_cast<char*>(ctx->m_Mem) + size;
+		}
+		ctx->m_Counter += size;
+	}
+
+	using SaveOperation = std::function<int(stbi_write_func*, void*, int, int, int, const void*)>;
+	static bool StbSaveFile(CKSTRING u8filename, const VxMath::VxImageDescEx* write_image, SaveOperation oper) {
+		if (u8filename == nullptr || write_image == nullptr) return false;
+		FILE* fs = EncodingHelper::U8FOpen(u8filename, "wb");
+		if (fs == nullptr) return;
+
+		// allocate buffer and convert data from ARGB to RGBA
+		VxMath::VxImageDescEx* wi = const_cast<VxMath::VxImageDescEx*>(write_image);
+		CKBYTE* data = new CKBYTE[write_image->GetImageSize()];
+		ARGBToRGBA(write_image->GetPixelCount(), wi->GetImage(), data);
+
+		// write data
+		FileSaveContext* ctx = new FileSaveContext(fs);
+		int ret = oper(
+			&FileWriteFunction, ctx,
+			static_cast<int>(wi->GetWidth()), static_cast<int>(wi->GetHeight()),
+			4, data	// 4 == RGBA8888
+		);
+
+		// free data
+		delete ctx;
+		delete[] data;
+		std::fclose(fs);
+
+		return ret == 0;
+	}
+	static CKDWORD StbSaveMemory(void* memory, const VxMath::VxImageDescEx* write_image, SaveOperation oper) {
+		if (write_image == nullptr) return 0;
+
+		// allocate buffer and convert data from ARGB to RGBA
+		VxMath::VxImageDescEx* wi = const_cast<VxMath::VxImageDescEx*>(write_image);
+		CKBYTE* data = new CKBYTE[write_image->GetImageSize()];
+		ARGBToRGBA(write_image->GetPixelCount(), wi->GetImage(), data);
+
+		// write data
+		MemorySaveContext* ctx = new MemorySaveContext(memory);
+		int ret = oper(
+			&FileWriteFunction, ctx,
+			static_cast<int>(wi->GetWidth()), static_cast<int>(wi->GetHeight()),
+			4, data	// 4 == RGBA8888
+		);
+
+		// free data
+		CKDWORD expected = static_cast<CKDWORD>(ctx->m_Counter);
+		delete ctx;
+		delete[] data;
+
+		if (ret == 0) return 0;
+		else return expected;
+	}
+
+#pragma region CKBitmapBMPHandler
+
+	CKBitmapBMPHandler::CKBitmapBMPHandler() :
+		CKBitmapHandler(), c_DefaultProp() {
+		c_DefaultProp.SetExt("Tga");
+		c_DefaultProp.m_ReaderGuid.d1 = 0xBCA97223u;
+		c_DefaultProp.m_ReaderGuid.d2 = 0x48578BCAu;
+	}
+
+	CKBitmapBMPHandler::~CKBitmapBMPHandler() {}
+
+	const CKBitmapProperties& CKBitmapBMPHandler::GetBitmapDefaultProperties() {
+		return c_DefaultProp;
+	}
+
+	bool CKBitmapBMPHandler::ReadFile(CKSTRING u8filename, VxMath::VxImageDescEx* read_image) {
+		StbReadFile(u8filename, read_image);
+	}
+
+	bool CKBitmapBMPHandler::ReadMemory(const void* memory, CKDWORD size, VxMath::VxImageDescEx* read_image) {
+		StbReadMemory(memory, size, read_image);
+	}
+
+	bool CKBitmapBMPHandler::SaveFile(CKSTRING u8filename, const VxMath::VxImageDescEx* write_image, const CKBitmapProperties& codec_param) {
+		return StbSaveFile(u8filename, write_image,
+			[&codec_param](stbi_write_func* func, void* context, int w, int h, int comp, const void* data) -> int {
+				return stbi_write_bmp_to_func(func, context, w, h, comp, data);
+			});
+	}
+
+	CKDWORD CKBitmapBMPHandler::SaveMemory(void* memory, const VxMath::VxImageDescEx* write_image, const CKBitmapProperties& codec_param) {
+		return StbSaveMemory(memory, write_image,
+			[&codec_param](stbi_write_func* func, void* context, int w, int h, int comp, const void* data) -> int {
+				return stbi_write_bmp_to_func(func, context, w, h, comp, data);
+			});
+	}
+
+#pragma endregion
+
+#pragma region CKBitmapTGAHandler
+
+	CKBitmapTGAHandler::CKBitmapTGAHandler() :
+		CKBitmapHandler(), c_DefaultProp() {
+		c_DefaultProp.SetExt("Tga");
+		c_DefaultProp.m_ReaderGuid.d1 = 0x585C7216u;
+		c_DefaultProp.m_ReaderGuid.d2 = 0x33302657u;
+	}
+
+	CKBitmapTGAHandler::~CKBitmapTGAHandler() {}
+
+	const CKBitmapProperties& CKBitmapTGAHandler::GetBitmapDefaultProperties() {
+		return c_DefaultProp;
+	}
+
+	bool CKBitmapTGAHandler::ReadFile(CKSTRING u8filename, VxMath::VxImageDescEx* read_image) {
+		StbReadFile(u8filename, read_image);
+	}
+
+	bool CKBitmapTGAHandler::ReadMemory(const void* memory, CKDWORD size, VxMath::VxImageDescEx* read_image) {
+		StbReadMemory(memory, size, read_image);
+	}
+
+	bool CKBitmapTGAHandler::SaveFile(CKSTRING u8filename, const VxMath::VxImageDescEx* write_image, const CKBitmapProperties& codec_param) {
+		return StbSaveFile(u8filename, write_image,
+			[&codec_param](stbi_write_func* func, void* context, int w, int h, int comp, const void* data) -> int {
+				return stbi_write_bmp_to_func(func, context, w, h, comp, data);
+			});
+	}
+
+	CKDWORD CKBitmapTGAHandler::SaveMemory(void* memory, const VxMath::VxImageDescEx* write_image, const CKBitmapProperties& codec_param) {
+		return StbSaveMemory(memory, write_image,
+			[&codec_param](stbi_write_func* func, void* context, int w, int h, int comp, const void* data) -> int {
+				return stbi_write_bmp_to_func(func, context, w, h, comp, data);
+			});
+	}
+
+#pragma endregion
+
+
+}
diff --git a/LibCmo/CK2/DataHandlers/CKBitmapHandler.hpp b/LibCmo/CK2/DataHandlers/CKBitmapHandler.hpp
new file mode 100644
index 0000000..9307493
--- /dev/null
+++ b/LibCmo/CK2/DataHandlers/CKBitmapHandler.hpp
@@ -0,0 +1,98 @@
+#pragma once
+
+#include "../../VTAll.hpp"
+
+namespace LibCmo::CK2::DataHandlers {
+
+	/**
+	 * The interface about processing bitmap data between raw data and specific data.
+	 * This interface will be capable to converting specific bitmap data into raw ARGB8888 raw data,
+	 * or convert them back.
+	*/
+	class CKBitmapHandler {
+	public:
+		CKBitmapHandler() {}
+		virtual ~CKBitmapHandler() {}
+		LIBCMO_DISABLE_COPY_MOVE(CKBitmapHandler);
+
+		/**
+		 * @brief Returns the current default bitmap options.
+		 * @return Current default bitmap options
+		*/
+		virtual const CKBitmapProperties& GetBitmapDefaultProperties() = 0;
+
+		/**
+		@brief Loads a bitmap file.
+		@return Returns true if successful.
+		@param u8filename[in] The file ready to read.
+		@param read_image[out] The pointer point to existed image desc which describe this image HW.
+		@see ReadMemory
+		*/
+		virtual bool ReadFile(CKSTRING u8filename, VxMath::VxImageDescEx* read_image) = 0;
+		/**
+		@brief Loads a bitmap file stored in memory.
+		@return Returns true if successful.
+		@param memory[in] The pointer to memory.
+		@param size[in] The size of memory.
+		@param read_image[out] The pointer point to existed image desc which describe this image HW.
+		@see ReadFile
+		*/
+		virtual bool ReadMemory(const void* memory, CKDWORD size, VxMath::VxImageDescEx* read_image) = 0;
+		/**
+		@brief Saves a image to a file 
+		@return Returns true if successful.
+		@param u8filename[in] The file ready to write.
+		@param write_image[in] The image will be written in file.
+		@param codec_param[in] The written image format parameter.
+		@see SaveMemory
+		*/
+		virtual bool SaveFile(CKSTRING u8filename, const VxMath::VxImageDescEx* write_image, const CKBitmapProperties& codec_param) = 0;
+		/**
+		@brief Saves an image into a memory block.
+		@return Returns the number of written bytes if successful, 0 otherwise.
+		@param memory[in] The memory where the image will be written. nullptr if you need a dry run to get how many bytes you need to allocate.
+		@param write_image[in] The image will be written in file.
+		@param codec_param[in] The written image format parameter.
+		@remark
+			+ You should call this method first to get how much bytes will be written.
+			+ Then you allocate a proper buffer.
+			+ Finally, call this method with your allocated buffer to get the result.
+		@see SaveFile
+		*/
+		virtual CKDWORD SaveMemory(void* memory, const VxMath::VxImageDescEx* write_image, const CKBitmapProperties& codec_param) = 0;
+
+	};
+
+	class CKBitmapBMPHandler : public CKBitmapHandler {
+	public:
+		CKBitmapBMPHandler();
+		virtual ~CKBitmapBMPHandler();
+		LIBCMO_DISABLE_COPY_MOVE(CKBitmapBMPHandler);
+
+		virtual const CKBitmapProperties& GetBitmapDefaultProperties() override;
+		virtual bool ReadFile(CKSTRING u8filename, VxMath::VxImageDescEx* read_image) override;
+		virtual bool ReadMemory(const void* memory, CKDWORD size, VxMath::VxImageDescEx* read_image) override;
+		virtual bool SaveFile(CKSTRING u8filename, const VxMath::VxImageDescEx* write_image, const CKBitmapProperties& codec_param) override;
+		virtual CKDWORD SaveMemory(void* memory, const VxMath::VxImageDescEx* write_image, const CKBitmapProperties& codec_param) override;
+
+	protected:
+		CKBitmapProperties c_DefaultProp;
+	};
+	
+	class CKBitmapTGAHandler : public CKBitmapHandler {
+	public:
+		CKBitmapTGAHandler();
+		virtual ~CKBitmapTGAHandler();
+		LIBCMO_DISABLE_COPY_MOVE(CKBitmapTGAHandler);
+
+		virtual const CKBitmapProperties& GetBitmapDefaultProperties() override;
+		virtual bool ReadFile(CKSTRING u8filename, VxMath::VxImageDescEx* read_image) override;
+		virtual bool ReadMemory(const void* memory, CKDWORD size, VxMath::VxImageDescEx* read_image) override;
+		virtual bool SaveFile(CKSTRING u8filename, const VxMath::VxImageDescEx* write_image, const CKBitmapProperties& codec_param) override;
+		virtual CKDWORD SaveMemory(void* memory, const VxMath::VxImageDescEx* write_image, const CKBitmapProperties& codec_param) override;
+
+	protected:
+		CKBitmapProperties c_DefaultProp;
+	};
+
+}
diff --git a/LibCmo/LibCmo.vcxproj b/LibCmo/LibCmo.vcxproj
index cc4b588..af85d3c 100644
--- a/LibCmo/LibCmo.vcxproj
+++ b/LibCmo/LibCmo.vcxproj
@@ -178,6 +178,7 @@
     <ClCompile Include="CK2\CKFileOthers.cpp" />
     <ClCompile Include="CK2\CKFileWriter.cpp" />
     <ClCompile Include="CK2\CKGlobals.cpp" />
+    <ClCompile Include="CK2\DataHandlers\CKBitmapHandler.cpp" />
     <ClCompile Include="CK2\MgrImpls\CKBaseManager.cpp" />
     <ClCompile Include="CK2\CKContext.cpp" />
     <ClCompile Include="CK2\MgrImpls\CKObjectManager.cpp" />
@@ -191,7 +192,9 @@
     <ClCompile Include="VTEncoding.cpp" />
     <ClCompile Include="CK2\CKFileReader.cpp" />
     <ClCompile Include="CK2\CKStateChunk.cpp" />
+    <ClCompile Include="VTImage.cpp" />
     <ClCompile Include="VTUtils.cpp" />
+    <ClCompile Include="VxMath\VxMath.cpp" />
     <ClCompile Include="VxMath\VxMemoryMappedFile.cpp" />
     <ClCompile Include="XContainer\XBitArray.cpp" />
   </ItemGroup>
@@ -201,6 +204,7 @@
     <ClInclude Include="CK2\CKFile.hpp" />
     <ClInclude Include="CK2\CKGlobals.hpp" />
     <ClInclude Include="CK2\CKIdentifiers.hpp" />
+    <ClInclude Include="CK2\DataHandlers\CKBitmapHandler.hpp" />
     <ClInclude Include="CK2\MgrImpls\CKBaseManager.hpp" />
     <ClInclude Include="CK2\CKContext.hpp" />
     <ClInclude Include="CK2\CKStateChunk.hpp" />
diff --git a/LibCmo/LibCmo.vcxproj.filters b/LibCmo/LibCmo.vcxproj.filters
index a2a44ba..f5415e4 100644
--- a/LibCmo/LibCmo.vcxproj.filters
+++ b/LibCmo/LibCmo.vcxproj.filters
@@ -43,6 +43,12 @@
     <Filter Include="Sources\CK2\ObjImpls">
       <UniqueIdentifier>{a8cd2188-b552-478c-9801-a6286b3d48a0}</UniqueIdentifier>
     </Filter>
+    <Filter Include="Headers\CK2\DataHandlers">
+      <UniqueIdentifier>{d66924c0-b040-4f5d-8a8e-87d6d412af38}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="Sources\CK2\DataHandlers">
+      <UniqueIdentifier>{cff15b64-e076-47af-9719-74af31d1804d}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="VTEncoding.cpp">
@@ -102,6 +108,15 @@
     <ClCompile Include="CK2\MgrImpls\CKPathManager.cpp">
       <Filter>Sources\CK2\MgrImpls</Filter>
     </ClCompile>
+    <ClCompile Include="CK2\DataHandlers\CKBitmapHandler.cpp">
+      <Filter>Sources\CK2\DataHandlers</Filter>
+    </ClCompile>
+    <ClCompile Include="VTImage.cpp">
+      <Filter>Sources</Filter>
+    </ClCompile>
+    <ClCompile Include="VxMath\VxMath.cpp">
+      <Filter>Sources\VxMath</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="VTUtils.hpp">
@@ -185,5 +200,8 @@
     <ClInclude Include="VxMath\VxMath.hpp">
       <Filter>Headers\VxMath</Filter>
     </ClInclude>
+    <ClInclude Include="CK2\DataHandlers\CKBitmapHandler.hpp">
+      <Filter>Headers\CK2\DataHandlers</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/LibCmo/VTImage.cpp b/LibCmo/VTImage.cpp
new file mode 100644
index 0000000..70148a4
--- /dev/null
+++ b/LibCmo/VTImage.cpp
@@ -0,0 +1,9 @@
+
+// Bad wrapper for stb image library.
+
+#define STB_IMAGE_IMPLEMENTATION
+#include "stb_image.h"
+#define STB_IMAGE_WRITE_IMPLEMENTATION
+#include "stb_image_write.h"
+#define STB_IMAGE_RESIZE_IMPLEMENTATION
+#include "stb_image_resize.h"
diff --git a/LibCmo/VxMath/VxMath.cpp b/LibCmo/VxMath/VxMath.cpp
new file mode 100644
index 0000000..5ba33d5
--- /dev/null
+++ b/LibCmo/VxMath/VxMath.cpp
@@ -0,0 +1,109 @@
+#include "VxMath.hpp"
+
+namespace LibCmo::VxMath {
+
+#pragma region Structure copying
+
+	void VxFillStructure(CK2::CKDWORD Count, void* Dst, CK2::CKDWORD Stride, CK2::CKDWORD SizeSrc, const void* Src) {
+		VxCopyStructure(Count, Dst, Stride, SizeSrc, Src, SizeSrc);
+	}
+
+	void VxCopyStructure(CK2::CKDWORD Count, void* Dst, CK2::CKDWORD OutStride, CK2::CKDWORD SizeSrc, const void* Src, CK2::CKDWORD InStride) {
+		if (Dst == nullptr || Src == nullptr) return;
+
+		char* cdst = reinterpret_cast<char*>(Dst);
+		const char* csrc = reinterpret_cast<const char*>(Src);
+		for (CK2::CKDWORD i = 0; i < Count; ++i) {
+			std::memcpy(cdst, csrc, SizeSrc);
+			cdst += OutStride;
+			csrc += InStride;
+		}
+	}
+
+#pragma endregion
+
+#pragma region Graphic Utilities
+
+	//CK2::CKDWORD VxGetBitCount(CK2::CKDWORD dwMask) {
+	//	if (dwMask == 0u) return 0;
+	//	dwMask >>= VxGetBitShift(dwMask);
+	//	CK2::CKDWORD count = 0;
+	//	while ((dwMask & 1u) == 0u) {
+	//		dwMask >>= 1u;
+	//		++count;
+	//	}
+	//	return count;
+	//}
+
+	//CK2::CKDWORD VxGetBitShift(CK2::CKDWORD dwMask) {
+	//	if (dwMask == 0u) return 0;
+	//	CK2::CKDWORD count = 0;
+	//	while ((dwMask & 1u) != 0u) {
+	//		dwMask >>= 1u;
+	//		++count;
+	//	}
+	//	return count;
+	//}
+
+	//CK2::CKDWORD VxScaleFactor(CK2::CKDWORD val, CK2::CKDWORD srcBitCount, CK2::CKDWORD dstBitCount) {
+	//	if (srcBitCount == dstBitCount) return val;
+	//	if (srcBitCount > dstBitCount) {
+	//		return val >> (srcBitCount - dstBitCount);
+	//	} else {
+	//		return val << (dstBitCount - srcBitCount);
+	//	}
+	//}
+
+	void VxDoAlphaBlit(VxImageDescEx* dst_desc, CK2::CKBYTE AlphaValue) {
+		if (dst_desc == nullptr) return;
+
+		CK2::CKDWORD* pixels = dst_desc->GetPixels();
+		CK2::CKDWORD pixelcount = dst_desc->GetPixelCount();
+
+		for (CK2::CKDWORD i = 0; i < pixelcount; ++i) {
+			*pixels = (*pixels) & 0xFF000000 | AlphaValue;
+			++pixels;
+		}
+
+		//CK2::CKDWORD* pixels = dst_desc->GetPixels();
+		//CK2::CKDWORD pixelcount = dst_desc->GetPixelCount(),
+		//	alphashift = VxGetBitShift(dst_desc->m_AlphaMask),
+		//	alphacount = VxGetBitCount(dst_desc->m_AlphaMask);
+
+		//CK2::CKDWORD av = VxScaleFactor(AlphaValue, static_cast<CK2::CKDWORD>(sizeof(CK2::CKBYTE) * 8), alphacount) << alphashift;
+
+		//for (CK2::CKDWORD i = 0; i < pixelcount; ++i) {
+		//	*pixels = (*pixels) & (~dst_desc->m_AlphaMask) | av;
+		//	++pixels;
+		//}
+	}
+
+	void VxDoAlphaBlit(VxImageDescEx* dst_desc, CK2::CKBYTE* AlphaValues) {
+		if (dst_desc == nullptr) return;
+		
+		CK2::CKDWORD* pixels = dst_desc->GetPixels();
+		CK2::CKDWORD pixelcount = dst_desc->GetPixelCount();
+
+		for (CK2::CKDWORD i = 0; i < pixelcount; ++i) {
+			*pixels =  (*pixels) & 0xFF000000 | (*AlphaValues);
+			++pixels;
+			++AlphaValues;
+		}
+		
+		//CK2::CKDWORD* pixels = dst_desc->GetPixels();
+		//CK2::CKDWORD pixelcount = dst_desc->GetPixelCount(),
+		//	alphashift = VxGetBitShift(dst_desc->m_AlphaMask),
+		//	alphacount = VxGetBitCount(dst_desc->m_AlphaMask);
+
+		//for (CK2::CKDWORD i = 0; i < pixelcount; ++i) {
+		//	*pixels = (*pixels) & (~dst_desc->m_AlphaMask) | (VxScaleFactor(*AlphaValues, static_cast<CK2::CKDWORD>(sizeof(CK2::CKBYTE) * 8), alphacount) << alphashift);
+		//	++pixels;
+		//	++AlphaValues;
+		//}
+	}
+
+#pragma endregion
+
+
+
+}
diff --git a/LibCmo/VxMath/VxMath.hpp b/LibCmo/VxMath/VxMath.hpp
index bc72870..c3fd995 100644
--- a/LibCmo/VxMath/VxMath.hpp
+++ b/LibCmo/VxMath/VxMath.hpp
@@ -11,7 +11,7 @@ namespace LibCmo::VxMath {
 	 * @param Count[in] Number of element to set in the destination buffer
 	 * @param Dst[out] Destination buffer
 	 * @param Stride[in] Amount in bytes between each element in the destination buffer
-	 * @param SizeSrc[in] Size in bytes (but must be a multiple of 4) of an element int the Src buffer
+	 * @param SizeSrc[in] Size in bytes of an element int the Src buffer
 	 * @param Src[in] Source buffer
 	 * @remark This function can be used to initialized an array of structure when only some members should be modified.
 	*/
@@ -21,29 +21,56 @@ namespace LibCmo::VxMath {
 	 * @param Count[in] Number of element to copy in the destination buffer
 	 * @param Dst[out] Destination buffer
 	 * @param OutStride[in] Amount in bytes between each element in the destination buffer
-	 * @param SizeSrc[in] Size in bytes (but must be a multiple of 4) of an element
+	 * @param SizeSrc[in] Size in bytes of an element
 	 * @param Src[in] Source buffer.
 	 * @param InStride[in] Amount in bytes between each element in the source buffer
 	 * @remark This function can be used to initialized an array of structure when only some members should be modified.
 	*/
-	void VxCopyStructure(CK2::CKDWORD Count, void* Dst, CK2::CKDWORD OutStride, CK2::CKDWORD SizeSrc, const void* Src,CK2::CKDWORD InStride);
+	void VxCopyStructure(CK2::CKDWORD Count, void* Dst, CK2::CKDWORD OutStride, CK2::CKDWORD SizeSrc, const void* Src, CK2::CKDWORD InStride);
 	
 	// ========== Graphic Utilities ==========
-	
+	//
+	///**
+	// * @brief Copy origin image to dest image.
+	// * Supporting for size scaling. If the size is matched, just a direct copy.
+	// * @param dest[out] The dest image.
+	// * @param origin[in] The origin image.
+	//*/
+	//void VxDoBlit(VxImageDescEx* dst, const VxImageDescEx* origin);
+
+	///**
+	// * @brief Counts number of bits to representing a value in dwMask
+	//*/
+	//CK2::CKDWORD VxGetBitCount(CK2::CKDWORD dwMask);
+	///**
+	// * @brief Counts number of bits to shift to acces a non zero value in dwMask.
+	//*/
+	//CK2::CKDWORD VxGetBitShift(CK2::CKDWORD dwMask);
+
+	///**
+	// * @brief scale the integer to a new range.
+	// * @param val The int need to be scale
+	// * @param srcBitCount The bit count which source integer consumed.
+	// * @param dstBitCount The bit count which dest integer consumed.
+	// * @remark This function usually used in image color factor assign with mask.
+	// * @return The result integer.
+	//*/
+	//CK2::CKDWORD VxScaleFactor(CK2::CKDWORD val, CK2::CKDWORD srcBitCount, CK2::CKDWORD dstBitCount);
+
 	/**
 	 * @brief Sets the alpha component of an image.
 	 * @param dst_desc[in] A pointer to a structure describing the destination image format.
 	 * @param AlphaValue[in] A CKBYTE value containing the alpha value to set to the whole image
 	 * @remark If the destination image does not have alpha information the function returns immediatly.
 	*/
-	void VxDoAlphaBlit(const VxImageDescEx* dst_desc, CK2::CKBYTE AlphaValue);
+	void VxDoAlphaBlit(VxImageDescEx* dst_desc, CK2::CKBYTE AlphaValue);
 	/**
 	 * @brief Sets the alpha component of an image.
 	 * @param dst_desc[in] A pointer to a structure describing the destination image format.
 	 * @param AlphaValues[in] A BYTE array containing the alpha values for each pixel. This array should be allocated to Width*Height bytes.
 	 * @remark If the destination image does not have alpha information the function returns immediatly.
 	*/
-	void VxDoAlphaBlit(const VxImageDescEx* dst_desc, CK2::CKBYTE* AlphaValues);
+	void VxDoAlphaBlit(VxImageDescEx* dst_desc, CK2::CKBYTE* AlphaValues);
 
 }
 
diff --git a/LibCmo/VxMath/VxTypes.hpp b/LibCmo/VxMath/VxTypes.hpp
index ffe4565..e452b8c 100644
--- a/LibCmo/VxMath/VxTypes.hpp
+++ b/LibCmo/VxMath/VxTypes.hpp
@@ -70,57 +70,68 @@ namespace LibCmo::VxMath {
 	};
 
 	/**
-	 * @brief Enhanced Image description
-	 * @remark The VxImageDescEx holds basically an VxImageDesc with additionnal support for
-	 * Colormap, Image pointer and is ready for future enhancements.
+	 * VxImageDescEx describe the height, width,
+	 * and etc for image.
+	 * Also it hold a pointer to raw image data.
+	 * The image data must be 32bit format.
+	 * Thus the size of Image must be 4 * Width * Height.
 	*/
-	struct VxImageDescEx {
-		VX_PIXELFORMAT Flags; /**< Reserved for special formats (such as compressed ) 0 otherwise */
+	class VxImageDescEx {
+	public:
+		VxImageDescEx(CK2::CKDWORD height, CK2::CKDWORD width) :
+			m_Width(width), m_Height(height), 
+			//m_RedMask(0), m_GreenMask(0), m_BlueMask(0), m_AlphaMask(0),
+			m_Image(nullptr){
+			m_Image = new CK2::CKBYTE[GetImageSize()];
+		}
+		~VxImageDescEx() {
+			delete[] m_Image;
+		}
+		LIBCMO_DISABLE_COPY_MOVE(VxImageDescEx);
 
-		CK2::CKDWORD Width; /**< Width in pixel of the image */
-		CK2::CKDWORD Height; /**< Height in pixel of the image */
-		union {
-			CK2::CKDWORD BytesPerLine; /**< Pitch (width in bytes) of the image */
-			CK2::CKDWORD TotalImageSize; /**< For compressed image (DXT1...) the total size of the image */
-		};
-		CK2::CKINT BitsPerPixel; /**< Number of bits per pixel */
-		union {
-			CK2::CKDWORD RedMask; /**< Mask for Red component */
-			CK2::CKDWORD BumpDuMask; /**< Mask for Bump Du component */
-		};
-		union {
-			CK2::CKDWORD GreenMask; /**< Mask for Green component */
-			CK2::CKDWORD BumpDvMask; /**< Mask for Bump Dv component */
-		};
-		union {
-			CK2::CKDWORD BlueMask; /**< Mask for Blue component */
-			CK2::CKDWORD BumpLumMask; /**< Mask for Luminance component */
-
-		};
-		CK2::CKDWORD AlphaMask; /**< Mask for Alpha component */
-
-		CK2::CKWORD BytesPerColorEntry; /**< ColorMap Stride */
-		CK2::CKWORD ColorMapEntries; /**< If other than 0 image is palletized */
-
-		CK2::CKBYTE* ColorMap; /**< Palette colors */
-		CK2::CKBYTE* Image; /**< Image */
-
-		bool HasAlpha() {
-			return (AlphaMask == 0 || Flags >= VX_PIXELFORMAT::_DXT1);
+		CK2::CKDWORD GetImageSize() const {
+			return static_cast<CK2::CKDWORD>(sizeof(uint32_t) * m_Width * m_Height);
+		}
+		CK2::CKBYTE* GetImage() {
+			return m_Image;
 		}
 
-		bool operator==(const VxImageDescEx& rhs) const {
-			return (
-				Height == rhs.Height && Width == rhs.Width &&
-				BitsPerPixel == rhs.BitsPerPixel && BytesPerLine == rhs.BytesPerLine &&
-				RedMask == rhs.RedMask && GreenMask == rhs.GreenMask && BlueMask == rhs.BlueMask && AlphaMask == rhs.AlphaMask &&
-				BytesPerColorEntry == rhs.BytesPerColorEntry && ColorMapEntries == rhs.ColorMapEntries
-				);
+		CK2::CKDWORD GetPixelCount() const {
+			return static_cast<CK2::CKDWORD>(m_Width * m_Height);
 		}
-		bool operator!=(const VxImageDescEx& rhs) const {
-			return !((*this) == rhs);
+		CK2::CKDWORD* GetPixels() {
+			return reinterpret_cast<CK2::CKDWORD*>(m_Image);
 		}
 
+		CK2::CKDWORD GetWidth() const {
+			return m_Width;
+		}
+		CK2::CKDWORD GetHeight() const {
+			return m_Height;
+		}
+
+		bool IsHWEqual(const VxImageDescEx& rhs) const {
+			return (m_Width == rhs.m_Width && m_Height == rhs.m_Height);
+		}
+	//	bool IsMaskEqual(const VxImageDescEx& rhs) const {
+	//		return (
+	//			m_RedMask == rhs.m_RedMask &&
+	//			m_GreenMask == rhs.m_GreenMask &&
+	//			m_BlueMask == rhs.m_BlueMask &&
+	//			m_AlphaMask == rhs.m_AlphaMask
+	//			);
+	//	}
+
+	//public:
+	//	CK2::CKDWORD m_RedMask;
+	//	CK2::CKDWORD m_GreenMask;
+	//	CK2::CKDWORD m_BlueMask;
+	//	CK2::CKDWORD m_AlphaMask;
+
+	protected:
+		CK2::CKDWORD m_Width; /**< Width in pixel of the image */
+		CK2::CKDWORD m_Height; /**< Height in pixel of the image */
+		CK2::CKBYTE* m_Image; /**< A pointer point to current processing image */
 	};
 
 }