Source code of Windows XP (NT5)
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/****************************************************************************
* * dibmap.h * * Microsoft Video for Windows Sample Capture Class * * Copyright (c) 1992, 1993 Microsoft Corporation. All Rights Reserved. * * You have a royalty-free right to use, modify, reproduce and * distribute the Sample Files (and/or any modified version) in * any way you find useful, provided that you agree that * Microsoft has no warranty obligations or liability for any * Sample Application Files which are modified. * ***************************************************************************/
typedef DWORD huge * LPHISTOGRAM;
#define RGB16(r,g,b) (\
(((WORD)(r) >> 3) << 10) | \ (((WORD)(g) >> 3) << 5) | \ (((WORD)(b) >> 3) << 0) )
LPHISTOGRAM InitHistogram(LPHISTOGRAM lpHistogram);void FreeHistogram(LPHISTOGRAM lpHistogram);HPALETTE HistogramPalette(LPHISTOGRAM lpHistogram, LPBYTE lp16to8, int nColors);BOOL DibHistogram(LPBITMAPINFOHEADER lpbi, LPBYTE lpBits, int x, int y, int dx, int dy, LPHISTOGRAM lpHistogram);HANDLE DibReduce(LPBITMAPINFOHEADER lpbi, LPBYTE lpBits, HPALETTE hpal, LPBYTE lp16to8);
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