1

vgui2/src/fileimage.h

@@ -0,0 +1,95 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef __FILEIMAGE_H__
+#define __FILEIMAGE_H__
+
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include <stdio.h>
+
+typedef void *FileHandle_t;
+
+class FileImageStream
+{
+public:
+	virtual void	Read(void *pOut, int len)=0;
+	
+	// Returns true if there were any Read errors.
+	// Clears error status.
+	virtual bool	ErrorStatus()=0;
+};
+
+
+// Use to read out of a memory buffer..
+class FileImageStream_Memory : public FileImageStream
+{
+public:
+						FileImageStream_Memory(void *pData, int dataLen);
+
+	virtual void		Read(void *pOut, int len);
+	virtual bool		ErrorStatus();
+
+
+private:		
+	unsigned char		*m_pData;
+	int					m_DataLen;
+	int					m_CurPos;
+	bool				m_bError;
+};
+
+
+
+// Generic image representation..
+class FileImage
+{
+public:
+					FileImage()
+					{
+						Clear();
+					}
+
+					~FileImage()
+					{
+						Term();
+					}
+
+	void			Term()
+	{
+		if(m_pData)
+			delete [] m_pData;
+
+		Clear();
+	}
+
+	// Clear the structure without deallocating.
+	void			Clear()
+	{
+		m_Width = m_Height = 0;
+		m_pData = NULL;
+	}
+	
+	int				m_Width, m_Height;
+	unsigned char	*m_pData;
+};
+
+
+// Functions to load/save FileImages.
+bool Load32BitTGA(
+	FileImageStream *fp,
+	FileImage *pImage);
+
+void Save32BitTGA(
+	FileHandle_t fp,
+	FileImage *pImage);
+
+
+#endif
+
+