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// A simple example of flood filling of connected area
// using Intel(R) Integrated Primitives (Intel(R) IPP) functions:
//     ippiFloodFillGetSize
//     ippiFloodFill_4Con_32s_C1IR
//     ippiFloodFill_8Con_32s_C1IR


#include <stdio.h>
#include "ipp.h"

#define WIDTH   8  /* source image width */
#define HEIGHT  8  /* source image height */

static Ipp32s pImage[WIDTH*HEIGHT] = /* Pointer to ROI of initial image */
{
    0, 10, 90,  0, 0, 0, 0, 0,
    0, 10, 10, 90, 0, 0, 0, 0,
    0, 10,  0, 10, 0, 0, 0, 0,
    0, 10, 10, 90, 0, 0, 0, 0,
    0,  0, 10,  0, 0, 10, 10, 10,
    0, 10,  0,  0, 0, 10, 0, 10,
    0,  0,  0, 10, 0, 10, 10, 10,
    0,  0,  0,  0, 10, 0, 0, 0
};

/* Next two defines are created to simplify code reading and understanding */
#define EXIT_MAIN exitLine:                                  /* Label for Exit */
#define check_sts(st) if((st) != ippStsNoErr) goto exitLine; /* Go to Exit if Intel(R) IPP function returned status different from ippStsNoErr */

/* Results of ippMalloc() are not validated because Intel(R) IPP functions perform bad arguments check and will return an appropriate status  */

int main(void)
{
    IppStatus status = ippStsNoErr;
    int imageStep = WIDTH*sizeof(Ipp32s); /* Steps, in bytes, through the source images */
    IppiSize roiSize = { WIDTH, HEIGHT }; /* Size of source ROI in pixels */
    IppiConnectedComp pRegion = {0};      /* Pointer to repainted region properties structure */
    IppiPoint seedPoint1 = {1,0},seedPoint2 = {5,4}; /* Coordinates of the seed point inside image ROI */
    int Point1NewValue = 1, Point2NewValue = 2; /* Value to fill with for one-channel data */
    Ipp8u* pBuffer = NULL;                /* Pointer to the work buffer */
    int bufferSize = 0;

    /* Calculate size of temporary buffer for flood filling operation */
    check_sts( status = ippiFloodFillGetSize(roiSize, &bufferSize) )

    pBuffer = ippsMalloc_8u(bufferSize);

    /* Perform flood filling of 4-connected area */
    check_sts( status = ippiFloodFill_4Con_32s_C1IR(pImage, imageStep, roiSize, seedPoint1, Point1NewValue, &pRegion, pBuffer) )

    /* Perform flood filling of 8-connected area */
    check_sts( status = ippiFloodFill_8Con_32s_C1IR(pImage, imageStep, roiSize, seedPoint2, Point2NewValue, &pRegion, pBuffer) )

EXIT_MAIN
    ippsFree(pBuffer);
    printf("Exit status %d (%s)\n", (int)status, ippGetStatusString(status));
    return (int)status;
}