forked from 0ad/0ad
83 lines
1.9 KiB
C
83 lines
1.9 KiB
C
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//***********************************************************
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//
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// Name: Bitmap.H
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// Author: Poya Manouchehri
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//
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// Description: CBitmap operates on a bitmap. Currently it
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// can load BMPs and TGAs. All bitmaps (even 8-bit
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// ones) are converted into full RGBAs.
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//
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//***********************************************************
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#ifndef BITMAP_H
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#define BITMAP_H
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#include <stdio.h>
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#include "Types.H"
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#include "FileResource.H"
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//image types
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#define FILE_TYPE_NOSUPPORT (0)
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#define FILE_TYPE_BMP (1)
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#define FILE_TYPE_TGA (2)
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//this structure holds header data for a TGA file
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typedef struct
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{
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unsigned char IDLength;
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unsigned char MapType;
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unsigned char ImageType;
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unsigned short MapOrigin;
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unsigned short MapLength;
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unsigned char MapEntrySize;
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unsigned short XOrigin;
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unsigned short YOrigin;
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unsigned short Width;
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unsigned short Height;
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unsigned char BPP;
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unsigned char Descriptor;
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} TGAHeader;
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class CBitmap : public CFileResource
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{
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public:
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CBitmap ();
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virtual ~CBitmap ();
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//Load the image from a file
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virtual FRESULT LoadBitmap (char *path, RESOURCETYPE type);
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//Creates the bits for the bitmap
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virtual FRESULT CreateBitmap (RESOURCETYPE type, char *name, int width, int height);
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//Get the pointer to the image data
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unsigned char *GetBits () { return m_pBits; }
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//Get width and height
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int GetWidth () { return m_Width; }
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int GetHeight () { return m_Height; }
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private:
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//Get the file format
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int GetImageType (FILE *file);
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//Load a bmp file
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FRESULT LoadBMP (FILE *file);
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//Load a TGA file
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FRESULT LoadTGA (FILE *file);
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//Load the actual bits from a file. the table is NULL
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//unless the image is 8-bit
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FRESULT LoadData (FILE *file, int bpp, RGBQUAD *table);
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protected:
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//release the memory of the bits
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void DestroyData ();
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protected:
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unsigned char *m_pBits; //Bitmap's bits
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int m_Width;
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int m_Height;
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};
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#endif
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