uimg.py 文件源码

def parse(self, data, offset=0):
        if len(data) < self.size:
            raise Exception("Header: Too small size of input data !")

        val = unpack_from(self.FORMAT, data, offset)
        self.MagicNumber  = val[0]
        header_crc        = val[1]
        self.TimeStamp    = val[2]
        self.DataSize     = val[3]
        self.LoadAddress  = val[4]
        self.EntryAddress = val[5]
        self.DataCRC      = val[6]
        self.OsType       = val[7]
        self.ArchType     = val[8]
        self.ImageType    = val[9]
        self.Compression  = val[10]
        self.Name         = val[11].decode('utf-8').strip('\0')

        if header_crc != self._crc():
            raise Exception("Header: Uncorrect CRC of input data !")

        return self.size