add func to path manager. fix bitmap handler. add general bitmap handler getter

LibCmo/CK2/CKContext.cpp

@@ -21,11 +21,14 @@ namespace LibCmo::CK2 {
 		m_FileWriteMode(CK_FILE_WRITEMODE::CKFILE_UNCOMPRESSED),
 		m_GlobalImagesSaveOptions(CK_TEXTURE_SAVEOPTIONS::CKTEXTURE_RAWDATA),
 		m_GlobalSoundsSaveOptions(CK_SOUND_SAVEOPTIONS::CKSOUND_EXTERNAL),
-		m_GlobalImagesSaveFormat(nullptr),	// todo: setup save format
+		m_GlobalImagesSaveFormat(),
 		// misc init
 		m_NameEncoding(),
 		m_OutputCallback(nullptr) {
 
+		// setup save format
+		m_GlobalImagesSaveFormat.m_Ext.SetExt("bmp");
+
 		// setup managers
 		m_ObjectManager = new MgrImpls::CKObjectManager(this);
 		m_ManagerList.emplace_back(m_ObjectManager);
@@ -225,12 +228,12 @@ namespace LibCmo::CK2 {
 		}
 	}
 
-	const CKBitmapProperties* CKContext::GetGlobalImagesSaveFormat() {
+	const CKBitmapProperties& CKContext::GetGlobalImagesSaveFormat() {
 		return m_GlobalImagesSaveFormat;
 	}
 
-	void CKContext::SetGlobalImagesSaveFormat(const CKBitmapProperties* Format) {
+	void CKContext::SetGlobalImagesSaveFormat(const CKBitmapProperties& Format) {
-		// todo: copy CKBitmapProperties
+		m_GlobalImagesSaveFormat = Format;
 	}
 
 	CK_SOUND_SAVEOPTIONS CKContext::GetGlobalSoundsSaveOptions() {

LibCmo/CK2/CKContext.hpp

@@ -85,8 +85,8 @@ namespace LibCmo::CK2 {
 		CK_TEXTURE_SAVEOPTIONS GetGlobalImagesSaveOptions();
 		void SetGlobalImagesSaveOptions(CK_TEXTURE_SAVEOPTIONS Options);
 
-		const CKBitmapProperties* GetGlobalImagesSaveFormat();
+		const CKBitmapProperties& GetGlobalImagesSaveFormat();
-		void SetGlobalImagesSaveFormat(const CKBitmapProperties* Format);
+		void SetGlobalImagesSaveFormat(const CKBitmapProperties& Format);
 
 		CK_SOUND_SAVEOPTIONS GetGlobalSoundsSaveOptions();
 		void SetGlobalSoundsSaveOptions(CK_SOUND_SAVEOPTIONS Options);
@@ -96,7 +96,7 @@ namespace LibCmo::CK2 {
 		CK_FILE_WRITEMODE m_FileWriteMode;
 		CK_TEXTURE_SAVEOPTIONS m_GlobalImagesSaveOptions;
 		CK_SOUND_SAVEOPTIONS m_GlobalSoundsSaveOptions;
-		CKBitmapProperties* m_GlobalImagesSaveFormat;
+		CKBitmapProperties m_GlobalImagesSaveFormat;
 
 		// ========== Encoding utilities ==========
 	public:

LibCmo/CK2/CKGlobals.cpp

@@ -78,6 +78,32 @@ namespace LibCmo::CK2 {
 		}
 	}
 
+	bool CKStrEqualI(CKSTRING str1, CKSTRING str2) {
+		if (str1 == nullptr) {
+			if (str2 == nullptr) return true;
+			else return false;
+		} else {
+			if (str2 == nullptr) return false;
+			else {
+				// do real cmp
+				size_t i = 0;
+				while (str1[i] != '\0' && str2[i] != '\0') {
+					if (std::tolower(str1[i]) != std::tolower(str2[i])) return false;
+					++str1;
+					++str2;
+				}
+
+				// !XOR the result, if both of them is zero, return true(1)
+				return !((str1[i] != '\0') ^ (str2[i] != '\0'));
+			}
+		}
+	}
+
+	bool CKStrEmpty(CKSTRING strl) {
+		if (strl == nullptr) return true;
+		return strl[0] == '\0';
+	}
+
 #pragma endregion
 
 #pragma region CKClass Registration

LibCmo/CK2/CKGlobals.hpp

@@ -47,7 +47,28 @@ namespace LibCmo::CK2 {
 
 	// ========== String Utilities ==========
 
+	/**
+	 * @brief Check whether 2 string is equal. Case senstive.
+	 * @param str1[in] String 1
+	 * @param str2[in] String 2
+	 * @return True if 2 string is equal.
+	 * @see CKStrIEqual
+	*/
 	bool CKStrEqual(CKSTRING str1, CKSTRING str2);
+	/**
+	 * @brief Check whther 2 string is equal. Case insenstive.
+	 * @param str1 
+	 * @param str2 
+	 * @return True if 2 string is equal.
+	 * @see CKStrEqual
+	*/
+	bool CKStrEqualI(CKSTRING str1, CKSTRING str2);
+	/**
+	 * @brief Check whether string is empty
+	 * @param strl 
+	 * @return True if string is empty.
+	*/
+	bool CKStrEmpty(CKSTRING strl);
 
 	// ========== Numberic Utilities ==========
 

LibCmo/CK2/CKTypes.hpp

@@ -366,6 +366,55 @@ namespace LibCmo::CK2 {
 		}
 	};
 
+	/**
+	 * @brief Storage class for filename extensions
+	*/
+	class CKFileExtension {
+	public:
+		CKFileExtension() : m_Data() {
+			std::memset(m_Data, 0, c_DataLen);
+		}
+		CKFileExtension(CKSTRING s) : CKFileExtension() {
+			SetExt(s);
+		}
+		CKFileExtension(const CKFileExtension& rhs) : CKFileExtension() {
+			std::memcpy(m_Data, rhs.m_Data, c_DataLen);
+		}
+		CKFileExtension(CKFileExtension&& rhs) : CKFileExtension() {
+			std::memmove(m_Data, rhs.m_Data, c_DataLen);
+			std::memset(rhs.m_Data, 0, c_DataLen);
+		}
+		CKFileExtension& operator=(const CKFileExtension& rhs) {
+			std::memcpy(m_Data, rhs.m_Data, c_DataLen);
+		}
+		CKFileExtension& operator=(CKFileExtension&& rhs) {
+			std::memmove(m_Data, rhs.m_Data, c_DataLen);
+			std::memset(rhs.m_Data, 0, c_DataLen);
+		}
+
+		void SetExt(CKSTRING s) {
+			if (s == nullptr) {
+				m_Data[0] = '\0';
+			} else {
+				if (s[0] == '.') ++s;	// skip dot
+				size_t len = std::strlen(s);
+				if (len > (c_DataLen - 1)) len = c_DataLen - 1;
+				std::memcpy(m_Data, s, len);
+			}
+		}
+
+		CKSTRING GetExt() const {
+			return m_Data;
+		}
+
+		bool operator==(const CKFileExtension& rhs) const {
+			return CKStrEqualI(m_Data, rhs.m_Data);
+		}
+
+	protected:
+		static const size_t c_DataLen = 4u;
+		CKCHAR m_Data[c_DataLen];
+	};
 	
 	/**
 	 * The struct describe the bitmap handler's infomation,
@@ -374,32 +423,16 @@ namespace LibCmo::CK2 {
 	 * such as jpeg compress level and etc. But currently there are no
 	 * such parameters.
 	*/
-	struct CKBitmapProperties {
+	class CKBitmapProperties {
+	public:
 		CKBitmapProperties() :
-			m_ReaderGuid(), m_Ext(3, '\0') {}
+			m_ReaderGuid(), m_Ext() {}
-		CKBitmapProperties(CKGUID& guid, const char* ext) :
+		CKBitmapProperties(const CKGUID& guid, CKSTRING ext) :
-			m_ReaderGuid(guid), m_Ext(3, '\0') {
+			m_ReaderGuid(guid), m_Ext(ext) {}
-			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 */
+		CKFileExtension m_Ext; /**< File Extension of the image being described by this structure */
 	};
 
 

LibCmo/CK2/DataHandlers/CKBitmapHandler.cpp

@@ -5,6 +5,8 @@
 
 namespace LibCmo::CK2::DataHandlers {
 
+#pragma region Help Functions
+
 	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);
@@ -66,12 +68,12 @@ namespace LibCmo::CK2::DataHandlers {
 				STBIR_COLORSPACE_SRGB, nullptr
 			);
 			// copy data
-			RGBAToARGB(read_image->GetPixelCount(), newdata, read_image->GetImage());
+			RGBAToARGB(read_image->GetPixelCount(), newdata, read_image->GetMutableImage());
 			// free
 			delete[] newdata;
 		} else {
 			// copy data RGBA -> ARGB
-			RGBAToARGB(read_image->GetPixelCount(), data, read_image->GetImage());
+			RGBAToARGB(read_image->GetPixelCount(), data, read_image->GetMutableImage());
 		}
 	}
 	static bool StbReadFile(CKSTRING u8filename, VxMath::VxImageDescEx* read_image) {
@@ -145,18 +147,17 @@ namespace LibCmo::CK2::DataHandlers {
 	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;
+		if (fs == nullptr) return false;
 
 		// 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);
+		ARGBToRGBA(write_image->GetPixelCount(), write_image->GetImage(), data);
 
 		// write data
 		FileSaveContext* ctx = new FileSaveContext(fs);
 		int ret = oper(
 			&FileWriteFunction, ctx,
-			static_cast<int>(wi->GetWidth()), static_cast<int>(wi->GetHeight()),
+			static_cast<int>(write_image->GetWidth()), static_cast<int>(write_image->GetHeight()),
 			4, data	// 4 == RGBA8888
 		);
 
@@ -171,15 +172,14 @@ namespace LibCmo::CK2::DataHandlers {
 		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);
+		ARGBToRGBA(write_image->GetPixelCount(), write_image->GetImage(), data);
 
 		// write data
 		MemorySaveContext* ctx = new MemorySaveContext(memory);
 		int ret = oper(
 			&FileWriteFunction, ctx,
-			static_cast<int>(wi->GetWidth()), static_cast<int>(wi->GetHeight()),
+			static_cast<int>(write_image->GetWidth()), static_cast<int>(write_image->GetHeight()),
 			4, data	// 4 == RGBA8888
 		);
 
@@ -191,20 +191,20 @@ namespace LibCmo::CK2::DataHandlers {
 		if (ret == 0) return 0;
 		else return expected;
 	}
+	
+#pragma endregion
 
 #pragma region CKBitmapBMPHandler
 
+	static const CKBitmapProperties g_BMPProperties(CKGUID(0xBCA97223u, 0x48578BCAu), "Bmp");
+
 	CKBitmapBMPHandler::CKBitmapBMPHandler() :
-		CKBitmapHandler(), c_DefaultProp() {
+		CKBitmapHandler() {}
-		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;
+		return g_BMPProperties;
 	}
 
 	bool CKBitmapBMPHandler::ReadFile(CKSTRING u8filename, VxMath::VxImageDescEx* read_image) {
@@ -232,18 +232,16 @@ namespace LibCmo::CK2::DataHandlers {
 #pragma endregion
 
 #pragma region CKBitmapTGAHandler
+	
+	static const CKBitmapProperties g_TGAProperties(CKGUID(0x585C7216u,  0x33302657u), "Tga");
 
 	CKBitmapTGAHandler::CKBitmapTGAHandler() :
-		CKBitmapHandler(), c_DefaultProp() {
+		CKBitmapHandler() {}
-		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;
+		return g_TGAProperties;
 	}
 
 	bool CKBitmapTGAHandler::ReadFile(CKSTRING u8filename, VxMath::VxImageDescEx* read_image) {
@@ -257,18 +255,51 @@ namespace LibCmo::CK2::DataHandlers {
 	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);
+				return stbi_write_tga_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);
+				return stbi_write_tga_to_func(func, context, w, h, comp, data);
 			});
 	}
 
 #pragma endregion
+	
+#pragma region General Getter Freer
 
+	static CKBitmapHandler* FindHandlerByExt(const CKFileExtension& ext) {
+		if (ext == g_BMPProperties.m_Ext) return new CKBitmapBMPHandler();
+		if (ext == g_TGAProperties.m_Ext) return new CKBitmapTGAHandler();
+		return nullptr;
+	}
+
+	static CKBitmapHandler* FindHandlerByGuid(const CKGUID& guid) {
+		if (guid == g_BMPProperties.m_ReaderGuid) return new CKBitmapBMPHandler();
+		if (guid == g_TGAProperties.m_ReaderGuid) return new CKBitmapTGAHandler();
+		return nullptr;
+	}
+
+	CKBitmapHandler* CKBitmapHandler::GetBitmapHandler(const CKFileExtension& ext, const CKGUID& guid) {
+		CKBitmapHandler* handler = nullptr;
+
+		// check ext first
+		handler = FindHandlerByExt(ext);
+		if (handler != nullptr) return handler;
+		
+		// check guid
+		handler = FindHandlerByGuid(guid);
+		if (handler != nullptr) return handler;
+
+		return nullptr;
+	}
+
+	void CKBitmapHandler::ReleaseBitmapHandler(CKBitmapHandler* handler) {
+		if (handler != nullptr) delete handler;
+	}
+
+#pragma endregion
 
 }

LibCmo/CK2/DataHandlers/CKBitmapHandler.hpp

@@ -15,6 +15,22 @@ namespace LibCmo::CK2::DataHandlers {
 		virtual ~CKBitmapHandler() {}
 		LIBCMO_DISABLE_COPY_MOVE(CKBitmapHandler);
 
+		/**
+		 * @brief General CKBitmapHandler getter.
+		 * @param ext[in] The file extention help finding corresponding bitmap handler.
+		 * @param guid[in] The GUID of bitmap handler used in fall back finding.
+		 * @remark 
+		 *		+ Returns a reader capable of reading file with the given extension ext
+		 *		+ It may be several plugins that support the same extension, in which case a preferedGUID identifying the reader that should be returned can be given (optionnal).
+		 * @return The pointer to CKBitmapHandler. nullptr if fail to find.
+		*/
+		static CKBitmapHandler* GetBitmapHandler(const CKFileExtension& ext, const CKGUID& guid);
+		/**
+		 * @brief General CKBitmapHandler disposer
+		 * @param handler[in] The handler need to be free.
+		*/
+		static void ReleaseBitmapHandler(CKBitmapHandler* handler);
+
 		/**
 		 * @brief Returns the current default bitmap options.
 		 * @return Current default bitmap options
@@ -75,8 +91,6 @@ namespace LibCmo::CK2::DataHandlers {
 		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 {
@@ -91,8 +105,6 @@ namespace LibCmo::CK2::DataHandlers {
 		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;
 	};
 
 }

LibCmo/CK2/MgrImpls/CKPathManager.cpp

@@ -10,7 +10,7 @@ namespace LibCmo::CK2::MgrImpls {
 
 	CKPathManager::CKPathManager(CKContext* ctx) :
 		CKBaseManager(ctx, PATH_MANAGER_GUID, "Path Manager"),
-		m_TempFolder() {
+		m_TempFolder(), m_ExtraPathes() {
 		// preset for temp folder
 		// todo: add current CKContext pointer as the part of temp path.
 		// thus multiple CKContext can work.
@@ -21,8 +21,15 @@ namespace LibCmo::CK2::MgrImpls {
 	}
 	CKPathManager::~CKPathManager() {}
 
-	void CKPathManager::SetTempFolder(CKSTRING u8_temp) {
+	bool CKPathManager::SetTempFolder(CKSTRING u8_temp) {
-		EncodingHelper::U8PathToStdPath(this->m_TempFolder, u8_temp);
+		std::filesystem::path cache;
+		EncodingHelper::U8PathToStdPath(cache, u8_temp);
+		if (std::filesystem::is_directory(cache)) {
+			m_TempFolder = cache;
+			return true;
+		} else {
+			return false;
+		}
 	}
 
 	std::string CKPathManager::GetTempFolder() {
@@ -41,8 +48,49 @@ namespace LibCmo::CK2::MgrImpls {
 		return result;
 	}
 
+	bool CKPathManager::AddPath(CKSTRING u8path) {
+		if (u8path == nullptr) return;
+		std::filesystem::path newpath;
+		EncodingHelper::U8PathToStdPath(newpath, u8path);
+		if (std::filesystem::is_directory(newpath)) {
+			m_ExtraPathes.emplace_back(std::move(newpath));
+			return true;
+		} else {
+			return false;
+		}
+	}
+
+	void CKPathManager::ClearPath() {
+		m_ExtraPathes.clear();
+	}
+
 	bool CKPathManager::ResolveFileName(std::string& u8_filename) {
-		// todo: finish resolve file name
+		std::filesystem::path filepath;
+		EncodingHelper::U8PathToStdPath(filepath, u8_filename.c_str());
+
+		// if it is absolute path, return it directly
+		if (filepath.is_absolute()) {
+			return true;
+		}
+
+		// otherwise check it in extra path
+		for (const auto& extrapath : m_ExtraPathes) {
+			auto combinedpath = extrapath / filepath;
+			if (std::filesystem::is_regular_file(combinedpath)) {
+				// this is correct
+				EncodingHelper::StdPathToU8Path(u8_filename, combinedpath);
+				return true;
+			}
+		}
+
+		// test in temp folder
+		auto tempfile = m_TempFolder / filepath;
+		if (std::filesystem::is_regular_file(tempfile)) {
+			EncodingHelper::StdPathToU8Path(u8_filename, combinedpath);
+			return true;
+		}
+
+		// failed
 		return false;
 	}
 

LibCmo/CK2/MgrImpls/CKPathManager.hpp

@@ -14,9 +14,10 @@ namespace LibCmo::CK2::MgrImpls {
 		
 		/**
 		 * @brief Set the temp folder of current context.
-		 * @param u8_temp 
+		 * @param u8_temp The temp folder you need to assign
+		 * @return true if success.
 		*/
-		void SetTempFolder(CKSTRING u8_temp);
+		bool SetTempFolder(CKSTRING u8_temp);
 		/**
 		 * @brief Get current temp folder.
 		 * @return 
@@ -29,15 +30,32 @@ namespace LibCmo::CK2::MgrImpls {
 		*/
 		std::string GetTempFilePath(CKSTRING u8_filename);
 		
+		/**
+		 * @brief Add extra path for ResolveFileName
+		 * @param u8path The added path.
+		 * @return true if success.
+		*/
+		bool AddPath(CKSTRING u8path);
+		/**
+		 * @brief Clear all extra path.
+		*/
+		void ClearPath();
+
 		/**
 		 * @brief Finds a file in the paths
 		 * @param u8_filename[inout] The given file path. overwritten by the final path if success.
+		 * @remark
+		 * We match file in following order.
+		 *		+ Whether given file is absolute path. return if true.
+		 *		+ User provided extra path.
+		 *		+ Virtools temp folder.
 		 * @return true if success
 		*/
 		bool ResolveFileName(std::string& u8_filename);
 
 	protected:
 		std::filesystem::path m_TempFolder;
+		XContainer::XArray<std::filesystem::path> m_ExtraPathes;
 	};
 
 }

LibCmo/VxMath/VxMath.cpp

@@ -57,7 +57,7 @@ namespace LibCmo::VxMath {
 	void VxDoAlphaBlit(VxImageDescEx* dst_desc, CK2::CKBYTE AlphaValue) {
 		if (dst_desc == nullptr) return;
 
-		CK2::CKDWORD* pixels = dst_desc->GetPixels();
+		CK2::CKDWORD* pixels = dst_desc->GetMutablePixels();
 		CK2::CKDWORD pixelcount = dst_desc->GetPixelCount();
 
 		for (CK2::CKDWORD i = 0; i < pixelcount; ++i) {
@@ -81,7 +81,7 @@ namespace LibCmo::VxMath {
 	void VxDoAlphaBlit(VxImageDescEx* dst_desc, CK2::CKBYTE* AlphaValues) {
 		if (dst_desc == nullptr) return;
 		
-		CK2::CKDWORD* pixels = dst_desc->GetPixels();
+		CK2::CKDWORD* pixels = dst_desc->GetMutablePixels();
 		CK2::CKDWORD pixelcount = dst_desc->GetPixelCount();
 
 		for (CK2::CKDWORD i = 0; i < pixelcount; ++i) {

LibCmo/VxMath/VxTypes.hpp

@@ -92,14 +92,20 @@ namespace LibCmo::VxMath {
 		CK2::CKDWORD GetImageSize() const {
 			return static_cast<CK2::CKDWORD>(sizeof(uint32_t) * m_Width * m_Height);
 		}
-		CK2::CKBYTE* GetImage() {
+		const CK2::CKBYTE* GetImage() const {
+			return m_Image;
+		}
+		CK2::CKBYTE* GetMutableImage() {
 			return m_Image;
 		}
 
 		CK2::CKDWORD GetPixelCount() const {
 			return static_cast<CK2::CKDWORD>(m_Width * m_Height);
 		}
-		CK2::CKDWORD* GetPixels() {
+		const CK2::CKDWORD* GetPixels() const {
+			return reinterpret_cast<CK2::CKDWORD*>(m_Image);
+		}
+		CK2::CKDWORD* GetMutablePixels() {
 			return reinterpret_cast<CK2::CKDWORD*>(m_Image);
 		}