qrtools.py 文件源码

def decode(self, filename=None):
        self.filename = filename or self.filename
        if self.filename:
            scanner = zbar.ImageScanner()
            # configure the reader
            scanner.parse_config('enable')
            # obtain image data
            pil = Image.open(self.filename).convert('L')
            width, height = pil.size
            try:
                raw = pil.tobytes()
            except AttributeError:
                raw = pil.tostring()
            # wrap image data
            image = zbar.Image(width, height, 'Y800', raw)
            # scan the image for barcodes
            result = scanner.scan(image)
            # extract results
            if result == 0:
                return False
            else:
                for symbol in image:
                    pass
                # clean up
                del(image)
                # Assuming data is encoded in utf8
                self.data = symbol.data.decode(u'utf-8')
                self.data_type = self.data_recognise()
                return True
        else:
            return False