// Packed struct for pixel storage    
typedef struct __attribute__((packed)) RGB_24Bit
{
    uint8_t red;
    uint8_t green;
    uint8_t blue;
} RGB_24Bit_t;

// Number of pixels in the image
constexpr uint32_t IMAGE_SIZE       = 1920 * 1080;
constexpr uint8_t  PIXEL_SIZE_BYTES = 3;

// local variables
uint8_t* baseAddr = reinterpret_cast<uint8_t*>(MEM_BASE_ADDR);
static RGB_24Bit_t pixel = { 0 };    
static uint32_t    red   = 0;
static uint32_t    green = 0;
static uint32_t    blue  = 0;


// Iterate over image by pixel size in bytes        
            for (size_t p = 0; p < IMAGE_SIZE * PIXEL_SIZE_BYTES; p += sizeof(RGB_24Bit_t))
            {
                // Get addr
                RGB_24Bit_t* pixelAddr = reinterpret_cast<RGB_24Bit_t*>(baseAddr + p);

                // Dereference to get pixel data
                pixel = *pixelAddr;

                // Sum Pixel values    
                red   += pixel.red;
                green += pixel.green;
                blue  += pixel.blue;
            }

            // Gather average by considering total pixels
            red   /= IMAGE_SIZE;
            green /= IMAGE_SIZE;
            blue  /= IMAGE_SIZE;

            // Display average
            xil_printf("%d", iter);
            xil_printf("\r\n Red: %d",   red);
            xil_printf("\r\n Blue: %d",  blue);
            xil_printf("\r\n Green: %d", green);
    
            // Reset values
            red   = 0;
            blue  = 0;
            green = 0;

            break;