


"""simple docstring"""






from typing import Dict, List, Optional, Tuple

from ...tokenization_utils import AddedToken, PreTrainedTokenizer
from ...utils import logging


__snake_case												=							logging.get_logger(__name__)


class      __lowerCamelCase	(       a__					):

     '''simple docstring'''
     A_							:						List[str]     =		['input_ids', 'attention_mask']


     def __init__(   self     ,					__UpperCAmelCase="[PAD]"     ,					__UpperCAmelCase="[BOS]"     ,					__UpperCAmelCase="[EOS]"     ,					__UpperCAmelCase="[MASK]"     ,					__UpperCAmelCase="[CLS]"     ,					__UpperCAmelCase="[SEP]"     ,					__UpperCAmelCase=2048     ,					**__UpperCAmelCase     ,					)							->				None:
          _a     						=					AddedToken(__UpperCAmelCase     ,					lstrip=__UpperCAmelCase     ,					rstrip=__UpperCAmelCase				) if isinstance(__UpperCAmelCase     ,					__UpperCAmelCase				) else pad_token
          _a     						=					AddedToken(__UpperCAmelCase     ,					lstrip=__UpperCAmelCase     ,					rstrip=__UpperCAmelCase				) if isinstance(__UpperCAmelCase     ,					__UpperCAmelCase				) else bos_token
          _a     						=					AddedToken(__UpperCAmelCase     ,					lstrip=__UpperCAmelCase     ,					rstrip=__UpperCAmelCase				) if isinstance(__UpperCAmelCase     ,					__UpperCAmelCase				) else eos_token
          _a     						=					AddedToken(__UpperCAmelCase     ,					lstrip=__UpperCAmelCase     ,					rstrip=__UpperCAmelCase				) if isinstance(__UpperCAmelCase     ,					__UpperCAmelCase				) else mask_token
          _a     						=					AddedToken(__UpperCAmelCase     ,					lstrip=__UpperCAmelCase     ,					rstrip=__UpperCAmelCase				) if isinstance(__UpperCAmelCase     ,					__UpperCAmelCase				) else cls_token
          _a     						=					AddedToken(__UpperCAmelCase     ,					lstrip=__UpperCAmelCase     ,					rstrip=__UpperCAmelCase				) if isinstance(__UpperCAmelCase     ,					__UpperCAmelCase				) else sep_token

          super().__init__(
              pad_token=__UpperCAmelCase     ,					bos_token=__UpperCAmelCase     ,					eos_token=__UpperCAmelCase     ,					mask_token=__UpperCAmelCase     ,					cls_token=__UpperCAmelCase     ,					sep_token=__UpperCAmelCase     ,					model_max_length=__UpperCAmelCase     ,					**__UpperCAmelCase     ,					)

          _a     						=					2**8  # utf is 8 bits

          # define special tokens dict
          _a     						=					{
              self.pad_token: 0,
              self.bos_token: 1,
              self.eos_token: 2,
              self.mask_token: 3,
              self.cls_token: 4,
              self.sep_token: 5,
          }
          _a     						=					len(self.special_tokens_encoder				)
          _a     						=					{v: k for k, v in self.special_tokens_encoder.items()}


     def 				_UpperCAmelCase   (   self				)							->				Dict[str, int]:
          _a     						=					self.special_tokens_encoder.copy()
          vocab.update(self.added_tokens_encoder				)
          for i in range(self._utf_vocab_size				):
               _a     						=					chr(__UpperCAmelCase				)
               _a     						=					i + len(self.special_tokens_encoder				)
          return vocab


     @property
     def 				_UpperCAmelCase   (   self				)							->				int:
          return self._utf_vocab_size + self._num_special_tokens


     def 				_UpperCAmelCase   (   self     ,					__UpperCAmelCase     ,					__UpperCAmelCase = None     ,					__UpperCAmelCase = False				)							->				List[int]:
          if already_has_special_tokens:
               return super().get_special_tokens_mask(
                   token_ids_a=__UpperCAmelCase     ,					token_ids_a=__UpperCAmelCase     ,					already_has_special_tokens=__UpperCAmelCase				)

          # normal case: some special tokens
          if token_ids_a is None:
               return [1] + [0] * len(__UpperCAmelCase				) + [1]
          return [1] + ([0] * len(__UpperCAmelCase				)) + [1] + ([0] * len(__UpperCAmelCase				)) + [1]


     def 				_UpperCAmelCase   (   self     ,					__UpperCAmelCase     ,					__UpperCAmelCase = None				)							->				List[int]:
          if token_ids_a is None:
               return [self.cls_token_id] + token_ids_a + [self.sep_token_id]
          else:
               return [self.cls_token_id] + token_ids_a + [self.sep_token_id] + token_ids_a + [self.sep_token_id]


     def 				_UpperCAmelCase   (   self     ,					__UpperCAmelCase				)							->				List[str]:
          _a     						=					[chr(__UpperCAmelCase				) for i in text.encode('''utf-8'''				)]
          return tokens


     def 				_UpperCAmelCase   (   self     ,					__UpperCAmelCase				)							->				List[str]:
          if token in self.special_tokens_encoder:
               _a     						=					self.special_tokens_encoder[token]
          elif token in self.added_tokens_encoder:
               _a     						=					self.added_tokens_encoder[token]
          elif len(__UpperCAmelCase				) != 1:
               _a     						=					self.unk_token_id
          else:
               _a     						=					ord(__UpperCAmelCase				) + self._num_special_tokens
          return token_id


     def 				_UpperCAmelCase   (   self     ,					__UpperCAmelCase				)							->				Any:
          if index in self.special_tokens_decoder:
               _a     						=					self.special_tokens_decoder[index]
          elif index in self.added_tokens_decoder:
               _a     						=					self.added_tokens_decoder[index]
          else:
               _a     						=					chr(index - self._num_special_tokens				)
          return token


     def 				_UpperCAmelCase   (   self     ,					__UpperCAmelCase				)							->				Any:
          _a     						=					B''''''
          for token in tokens:
               if token in self.special_tokens_decoder:
                    _a     						=					self.special_tokens_decoder[token].encode('''utf-8'''				)
               elif token in self.added_tokens_decoder:
                    _a     						=					self.special_tokens_decoder[token].encode('''utf-8'''				)
               elif token in self.special_tokens_encoder:
                    _a     						=					token.encode('''utf-8'''				)
               elif token in self.added_tokens_encoder:
                    _a     						=					token.encode('''utf-8'''				)
               else:
                    _a     						=					bytes([ord(__UpperCAmelCase				)]				)
               bstring += tok_string
          _a     						=					bstring.decode('''utf-8'''     ,					errors='''replace'''				)
          return string





     def 				_UpperCAmelCase   (   self     ,					__UpperCAmelCase     ,					__UpperCAmelCase = None				)							->				Tuple[str]:
          return ()



"""simple docstring"""






import math
import os

import cva
import numpy as np

__snake_case												=							255.0
def    A_ ( _lowerCAmelCase  :       float,  _lowerCAmelCase  :       float							):






     """simple docstring"""

     _a     						=					np.mean((original - contrast) ** 2							)
     if mse == 0:
          return 1_00

     return 20 * math.logaa(PIXEL_MAX / math.sqrt(_lowerCAmelCase							)							)
def    A_ ( ):






     """simple docstring"""

     _a     						=					os.path.dirname(os.path.realpath(_lowerCAmelCase							)							)
     # Loading images (original image and compressed image)
     _a     						=					cva.imread(os.path.join(_lowerCAmelCase,  '''image_data/original_image.png'''							)							)
     _a     						=					cva.imread(os.path.join(_lowerCAmelCase,  '''image_data/compressed_image.png'''							),  1							)

     _a     						=					cva.imread(os.path.join(_lowerCAmelCase,  '''image_data/PSNR-example-base.png'''							)							)
     _a     						=					cva.imread(
         os.path.join(_lowerCAmelCase,  '''image_data/PSNR-example-comp-10.jpg'''							),  1							)

     # Value expected: 29.73dB
     print('''-- First Test --'''							)
     print(f'PSNR value is {peak_signal_to_noise_ratio(_lowerCAmelCase,  _lowerCAmelCase							)} dB'							)

     # # Value expected: 31.53dB (Wikipedia Example)
     print('''\n-- Second Test --'''							)
     print(f'PSNR value is {peak_signal_to_noise_ratio(_lowerCAmelCase,  _lowerCAmelCase							)} dB'							)


if __name__ == "__main__":
   main()