import cffi
import os
import functools
import binascii
from datetime import timedelta

def loadlib(dll_path,*includes,**kwargs):
    ffi = cffi.FFI()
    for include in includes:
        ffi.cdef(open(include).read(),**kwargs)
    return ffi,ffi.dlopen(dll_path)

class DVDRead(object):
    def __init__(self,path):
        self.dvd=None
        self.ffi,self.lib = loadlib("libdvdread-8.dll",
            "dvd_types.h",
            "dvd_reader.h",
            "ifo_types.h",
            "ifo_read.h",
            "ifo_print.h",
            "nav_types.h",
            "nav_read.h",
            "nav_print.h")
        self.path=path
        self.titles={}
        self.open(path)

    def __del__(self):
        if self.dvd:
            self.lib.DVDClose(self.dvd)

    def open(self,path):
        # self.dvd_css=self.css_lib.dvdcss_open()
        self.dvd=self.lib.DVDOpen(bytes(path,"utf8"))
        vol_id=self.ffi.new("unsigned char[]",32)
        self.lib.DVDDiscID(self.dvd,vol_id)
        self.disc_id=str(binascii.hexlify(self.ffi.buffer(vol_id,16)[:]),"utf8")
        self.lib.DVDUDFVolumeInfo(self.dvd,vol_id,32,self.ffi.NULL,0)
        self.udf_disc_name=str(self.ffi.string(vol_id),"utf8")
        self.lib.DVDISOVolumeInfo(self.dvd,vol_id,32,self.ffi.NULL,0)
        self.iso_disc_name=str(self.ffi.string(vol_id),"utf8")
        self.ffi.release(vol_id)