cImageTGA.h

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//
 
#ifndef _INC_cImageTGA_H
#define _INC_cImageTGA_H
#ifndef NO_PRAGMA_ONCE
#pragma once
#endif
 
#include "cImageBase.h"
#include "GrayCore/include/cFilePath.h"
 
namespace GrayLib
{
        UNITTEST2_PREDEF(cImageTGA);
 
#pragma pack(push, 1)
        struct CATTR_PACKED cImageTGAHeader     // sizeof = 18 bytes
        {
                BYTE  m_identsize;          
                BYTE  m_colourmaptype;      
                BYTE  m_imagetype;          
 
                short m_colourmapstart;     
                short m_colourmaplength;    
                BYTE  m_colourmapbits;      
 
                short m_xstart;             
                short m_ystart;             
                short m_width;              
                short m_height;             
                BYTE  m_nBitsPerPixel;      
                BYTE  m_descriptor;         
 
                // pixel data follows header
        };
#pragma pack(pop)
 
        class GRAYLIB_LINK cImageTGA : public cImageBase
        {
 
                typedef cImageBase SUPER_t;
 
        public:
                cImageTGAHeader m_Head;
                cHeapBlock m_Pixels;            
 
        protected:
                HRESULT UpdateHeader();
 
        public:
                cImageTGA() noexcept;
                virtual ~cImageTGA();
 
                virtual void SetEmpty() override;
                HRESULT CreateSurfaceTGA(PIXELS_t cx, PIXELS_t cy, SURF_FORM_TYPE ePixelFormat);
 
                virtual HRESULT ReadStream(cStreamInput& strIn) override;
                virtual HRESULT WriteStream(cStreamOutput* pFile) const override;
 
                virtual HRESULT SetCopySurface(const cSurfaceBase& Surf) override;
 
                UNITTEST2_PREDEF(cImageTGA);
        };
 
        class GRAYLIB_LINK cImageTGAType
                : public IImageCreator
                , public cSingleton<cImageTGAType>
        {
        public:
                cImageTGAType()
                        : cSingleton<cImageTGAType>(this, typeid(cImageTGAType))
                {
                }
                virtual bool IsFileExt(const FILECHAR_t* pszFileExt) const
                {
                        return cFilePath::IsFileNameExt(pszFileExt, _FN(".tga"));
                }
                virtual cImageBasePtr CreateObject() const override
                {
                        return new cImageTGA;
                }
        };
};
#endif  // _INC_cImageTGA_H