Cirrus Logic CS485 Dokumentacja Pobierz pdf (Strona 102)

100

101

Intel

Image Processing Library Reference Manual

4-48

Example 4-8 Translating a DIB Image Into an IplImage

int example47( void ) {

#define WIDTH 8

#define HEIGHT 8

BITMAPINFO *dib; // pointer to bitmap

RGBQUAD *rgb; // pointer to bitmap colors

unsigned char *data; // pointer to bitmap data

BITMAPINFOHEADER *dibh; // header beginning

IplImage *img = NULL;

BOOL cloneData; // variable to get result

int i;

__try {

int size = HEIGHT * ((WIDTH+3) & ~3);

// allocate memory for bitmap

dib = malloc(sizeof(BITMAPINFOHEADER)

+ sizeof(RGBQUAD)*256 + size );

if( NULL == dib ) return 0;

// define the pointers

dibh = (BITMAPINFOHEADER*)dib;

rgb=(RGBQUAD*)((char*)dib + sizeof(BITMAPINFOHEADER));

data=(unsigned char*)((char*)rgb+sizeof(RGBQUAD)*256);

// define bitmap

dibh->biSize = sizeof(BITMAPINFOHEADER);

dibh->biWidth = WIDTH;

dibh->biHeight = HEIGHT;

dibh->biPlanes = 1;

dibh->biBitCount = 8;

dibh->biCompression = BI_RGB;

dibh->biSizeImage = size;

dibh->biClrUsed = 256;

dibh->biClrImportant = 0;

continued

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