80 lines
2.5 KiB
C++
80 lines
2.5 KiB
C++
/*
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* File: ximabmp.h
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* Purpose: BMP Image Class Loader and Writer
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*/
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/* ==========================================================
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* CxImageBMP (c) 07/Aug/2001 Davide Pizzolato - www.xdp.it
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* For conditions of distribution and use, see copyright notice in ximage.h
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*
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* Special thanks to Troels Knakkergaard for new features, enhancements and bugfixes
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*
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* original CImageBMP and CImageIterator implementation are:
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* Copyright: (c) 1995, Alejandro Aguilar Sierra <asierra(at)servidor(dot)unam(dot)mx>
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*
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* ==========================================================
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*/
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#if !defined(__ximaBMP_h)
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#define __ximaBMP_h
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#include "ximage.h"
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const int32_t RLE_COMMAND = 0;
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const int32_t RLE_ENDOFLINE = 0;
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const int32_t RLE_ENDOFBITMAP = 1;
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const int32_t RLE_DELTA = 2;
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#if !defined(BI_RLE8)
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#define BI_RLE8 1L
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#endif
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#if !defined(BI_RLE4)
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#define BI_RLE4 2L
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#endif
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#if CXIMAGE_SUPPORT_BMP
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class CxImageBMP: public CxImage
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{
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public:
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CxImageBMP(): CxImage(CXIMAGE_FORMAT_BMP) {};
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bool Decode(CxFile * hFile);
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bool Decode(FILE *hFile) { CxIOFile file(hFile); return Decode(&file); }
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#if CXIMAGE_SUPPORT_ENCODE
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bool Encode(CxFile * hFile);
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bool Encode(FILE *hFile) { CxIOFile file(hFile); return Encode(&file); }
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#endif // CXIMAGE_SUPPORT_ENCODE
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protected:
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bool DibReadBitmapInfo(CxFile* fh, BITMAPINFOHEADER *pdib);
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};
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#define BFT_ICON 0x4349 /* 'IC' */
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#define BFT_BITMAP 0x4d42 /* 'BM' */
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#define BFT_CURSOR 0x5450 /* 'PT' */
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#ifndef WIDTHBYTES
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#define WIDTHBYTES(i) ((unsigned)((i+31)&(~31))/8) /* ULONG aligned ! */
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#endif
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#endif
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#define DibWidthBytesN(lpbi, n) (uint32_t)WIDTHBYTES((uint32_t)(lpbi)->biWidth * (uint32_t)(n))
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#define DibWidthBytes(lpbi) DibWidthBytesN(lpbi, (lpbi)->biBitCount)
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#define DibSizeImage(lpbi) ((lpbi)->biSizeImage == 0 \
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? ((uint32_t)(uint32_t)DibWidthBytes(lpbi) * (uint32_t)(uint32_t)(lpbi)->biHeight) \
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: (lpbi)->biSizeImage)
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#define DibNumColors(lpbi) ((lpbi)->biClrUsed == 0 && (lpbi)->biBitCount <= 8 \
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? (int32_t)(1 << (int32_t)(lpbi)->biBitCount) \
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: (int32_t)(lpbi)->biClrUsed)
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#define FixBitmapInfo(lpbi) if ((lpbi)->biSizeImage == 0) \
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(lpbi)->biSizeImage = DibSizeImage(lpbi); \
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if ((lpbi)->biClrUsed == 0) \
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(lpbi)->biClrUsed = DibNumColors(lpbi); \
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#endif
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