#include <stdio.h>
#include <stdlib.h>
#include "types.h"
#include "DmaBuffer.h"

DmaBuffer::DmaBuffer(int size)
{
    //buffer[0] = malloc(size);
    //buffer[1] = malloc(size);

    posix_memalign(&buffer[0], DEFAULT_ALIGNMENT, size);
    posix_memalign(&buffer[1], DEFAULT_ALIGNMENT, size);

    flag = 0;
}

DmaBuffer::~DmaBuffer(void)
{
    free(buffer[0]);
    free(buffer[1]);
}

void
DmaBuffer::swap_buffer(void)
{
    flag ^= 1;
}

void
DmaBuffer::get_buffer(void *_dst)
{
    void **dst = (void**)_dst;
    *dst = buffer[flag];
}