/*
* @Summary: Calculate Weights (Count each byte in file)
* @Returns: Array of Weights
* @Param  :
*       FILE    *fp   : The file
*       int     *total: The Number of different bytes in the file (Number of entries in Weight-Array)
*/
uint32_t*
    huffman_calc_weight(FILE *fp, int *total) {
    uint8_t buffer[512];
    int i;
    int real_buffer_size;
    uint32_t *Weights;

    Weights = (uint32_t*)calloc(sizeof(uint32_t), 256);

    if (fp != NULL) {
        fseek(fp, 0, SEEK_SET);
        while (!feof(fp)) {
            if ((real_buffer_size = fread(buffer, 1, sizeof(buffer), fp)) != 0) {

                for (i = 0; i < real_buffer_size; i++) {
                    Weights[buffer[i]]++;
                }

                *total += real_buffer_size;
            }
        }
        fseek(fp, 0, SEEK_SET);
    }

    return Weights;
}