_freeimage.py 文件源码

def __init__(self):

        # Initialize freeimage lib as None
        self._lib = None

        # A lock to create thread-safety
        self._lock = threading.RLock()

        # Init log messages lists
        self._messages = []

        # Select functype for error handler
        if sys.platform.startswith('win'): 
            functype = ctypes.WINFUNCTYPE
        else: 
            functype = ctypes.CFUNCTYPE

        # Create output message handler
        @functype(None, ctypes.c_int, ctypes.c_char_p)
        def error_handler(fif, message):
            message = message.decode('utf-8')
            self._messages.append(message)
            while (len(self._messages)) > 256:
                self._messages.pop(0)

        # Make sure to keep a ref to function
        self._error_handler = error_handler