Source code of Windows XP (NT5)
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12 lines
606 B

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);