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https://github.com/KolibriOS/kolibrios.git
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143 lines
3.4 KiB
C
143 lines
3.4 KiB
C
//
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// bmp.h - header file / freeware
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//
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// David Henry - tfc_duke@hotmail.com
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//
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#ifndef __BITMAP_H_
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#define __BITMAP_H_
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// magic number "BM"
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#define BITMAP_ID ('B' + ('M'<<8))
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// header byte type for RLE
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#define RLE_COMMAND 0
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#define RLE_ENDOFLINE 0
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#define RLE_ENDOFBITMAP 1
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#define RLE_DELTA 2
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#define BI_OS2 -1
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// compression type
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#define BI_RGB 0
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#define BI_RLE8 1
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#define BI_RLE4 2
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#define BI_BITFIELDS 3
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#pragma warning( disable : 4103 )
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// --------------------------------------------
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// tagBITMAPFILEHEADER - bitmap file header.
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// --------------------------------------------
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#pragma pack(2)
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typedef struct tagBITMAPFILEHEADER // bmfh
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{
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unsigned short bfType; // magic number "BM"
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unsigned int bfSize; // file size
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unsigned short bfReserved1; // reserved
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unsigned short bfReserved2; // reserved
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unsigned int bfOffBits; // offset to bitmap data
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} BITMAPFILEHEADER, *PBITMAPFILEHEADER;
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#pragma pack(4)
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// --------------------------------------------
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// tagBITMAPCOREHEADER - bitmap core header.
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// --------------------------------------------
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typedef struct tagBITMAPCOREHEADER // bmch
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{
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unsigned int bcSize; // size of the structure
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unsigned short bcWidth; // image width
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unsigned short bcHeight; // image height
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unsigned short bcPlanes; // must be equal to 1
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unsigned short bcBitCount; // number of bits per pixel
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} BITMAPCOREHEADER, *PBITMAPCOREHEADER;
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// --------------------------------------------
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// tagRGBTRIPLE - 24 bits pixel
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// --------------------------------------------
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typedef struct tagRGBTRIPLE // rgbt
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{
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unsigned char rgbtBlue; // blue
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unsigned char rgbtGreen; // green
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unsigned char rgbtRed; // red
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} RGBTRIPLE, *PRGBTRIPLE;
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// --------------------------------------------
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// tagRGBQUAD - 32 bits pixel
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// --------------------------------------------
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typedef struct tagRGBQUAD // rgbt
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{
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unsigned char rgbBlue; // blue
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unsigned char rgbGreen; // green
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unsigned char rgbRed; // red
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unsigned char rgbReserved; // reserved
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} RGBQUAD, *PRGBQUAD;
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// --------------------------------------------
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// tagBITMAPCOREINFO - bitmap core info.
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// --------------------------------------------
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typedef struct tagBITMAPCOREINFO // bmci
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{
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BITMAPCOREHEADER bmciHeader; // size of the structure
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RGBTRIPLE bcmiColors[1]; // color palette
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} BITMAPCOREINFO, *PBITMAPCOREINFO;
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// --------------------------------------------
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// BITMAPFILEHEADER - bitmap info header.
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// --------------------------------------------
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typedef struct tagBITMAPINFOHEADER
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{
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unsigned int biSize; // size of the structure
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int biWidth; // image width
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int biHeight; // image height
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unsigned short biPlanes; // must be equal to 1
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unsigned short biBitCount; // number of bits per pixel
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unsigned int biCompression; // compression type
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unsigned int biSizeImage; // size of data bitmap
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int biXPelsPerMeter; // number of pixels per meter on the X axis
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int biYPelsPerMeter; // number of pixels per meter on the Y axis
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unsigned int biClrUsed; // number of colors used
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unsigned int biClrImportant; // number of important colors
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} BITMAPINFOHEADER, *PBITMAPINFOHEADER;
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// prototype
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int LoadFileBMP( const char *filename, unsigned char **pixels, int *width, int *height, bool flipvert );
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#endif // __BITMAP_H_
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