BZIP2_IOBUF_SIZE
bd->inbufCount = bd->fill(bd->inbuf, BZIP2_IOBUF_SIZE);
outbuf = malloc(BZIP2_IOBUF_SIZE);
inbuf = malloc(BZIP2_IOBUF_SIZE);
i = read_bunzip(bd, outbuf, BZIP2_IOBUF_SIZE);