



from typing import List

import jiwer
import jiwer.transforms as tr
from packaging import version

import datasets
from datasets.config import PY_VERSION


if PY_VERSION < version.parse("""3.8"""):
      import importlib_metadata
else:
      import importlib.metadata as importlib_metadata


_lowerCamelCase						    =  """"""


if version.parse(importlib_metadata.version("""jiwer""")) < version.parse("""2.3.0"""):

      class       _SCREAMING_SNAKE_CASE	(tr.AbstractTransform ):





           def __init__(       self :							Dict     ,  UpperCamelCase :							str = " "				)->int:
            __SCREAMING_SNAKE_CASE       :    List[str]       =	sentence_delimiter





           def 	__snake_case    (       self :							Dict     ,  UpperCamelCase :							str				)->int:
            return list(UpperCamelCase				)






           def 	__snake_case    (       self :							str     ,  UpperCamelCase :							List[str]				)->Dict:
            __SCREAMING_SNAKE_CASE       :    str       =	[]
            for sent_idx, sentence in enumerate(UpperCamelCase				):
             chars.extend(self.process_string(UpperCamelCase				)				)
             if self.sentence_delimiter is not None and self.sentence_delimiter != "" and sent_idx < len(UpperCamelCase				) - 1:
              chars.append(self.sentence_delimiter				)
            return chars






      _lowerCamelCase						    =  tr.Compose(
          [tr.RemoveMultipleSpaces(), tr.Strip(), SentencesToListOfCharacters(SENTENCE_DELIMITER)]
      )
else:
      _lowerCamelCase						    =  tr.Compose(
          [
              tr.RemoveMultipleSpaces(),
              tr.Strip(),
              tr.ReduceToSingleSentence(SENTENCE_DELIMITER),
              tr.ReduceToListOfListOfChars(),
          ]
      )


_lowerCamelCase						    =  """\
@inproceedings{inproceedings,
    author = {Morris, Andrew and Maier, Viktoria and Green, Phil},
    year = {2004},
    month = {01},
    pages = {},
    title = {From WER and RIL to MER and WIL: improved evaluation measures for connected speech recognition.}
}
"""

_lowerCamelCase						    =  """\
Character error rate (CER) is a common metric of the performance of an automatic speech recognition system.

CER is similar to Word Error Rate (WER), but operates on character instead of word. Please refer to docs of WER for further information.

Character error rate can be computed as:

CER = (S + D + I) / N = (S + D + I) / (S + D + C)

where

S is the number of substitutions,
D is the number of deletions,
I is the number of insertions,
C is the number of correct characters,
N is the number of characters in the reference (N=S+D+C).

CER's output is not always a number between 0 and 1, in particular when there is a high number of insertions. This value is often associated to the percentage of characters that were incorrectly predicted. The lower the value, the better the
performance of the ASR system with a CER of 0 being a perfect score.
"""

_lowerCamelCase						    =  """
Computes CER score of transcribed segments against references.
Args:
    references: list of references for each speech input.
    predictions: list of transcribtions to score.
    concatenate_texts: Whether or not to concatenate sentences before evaluation, set to True for more accurate result.
Returns:
    (float): the character error rate

Examples:

    >>> predictions = [\"this is the prediction\", \"there is an other sample\"]
    >>> references = [\"this is the reference\", \"there is another one\"]
    >>> cer = datasets.load_metric(\"cer\")
    >>> cer_score = cer.compute(predictions=predictions, references=references)
    >>> print(cer_score)
    0.34146341463414637
"""

@datasets.utils.file_utils.add_start_docstrings(_DESCRIPTION			,    _KWARGS_DESCRIPTION )
class       _SCREAMING_SNAKE_CASE	(datasets.Metric ):





     def 	__snake_case    (       self :							Any				)->Dict:
      return datasets.MetricInfo(
          description=_DESCRIPTION     ,  citation=_CITATION     ,  inputs_description=_KWARGS_DESCRIPTION     ,  features=datasets.Features(
              {
                  "predictions": datasets.Value("string"     ,  id="sequence"				),
                  "references": datasets.Value("string"     ,  id="sequence"				),
              }				)     ,  codebase_urls=["https://github.com/jitsi/jiwer/"]     ,  reference_urls=[
              "https://en.wikipedia.org/wiki/Word_error_rate",
              "https://sites.google.com/site/textdigitisation/qualitymeasures/computingerrorrates",
          ]     ,  )






     def 	__snake_case    (       self :							int     ,  UpperCamelCase :							str     ,  UpperCamelCase :							Dict     ,  UpperCamelCase :							Dict=False				)->Dict:
      if concatenate_texts:
       return jiwer.compute_measures(
           UpperCamelCase     ,  UpperCamelCase     ,  truth_transform=UpperCamelCase     ,  hypothesis_transform=UpperCamelCase     ,  )["wer"]

      __SCREAMING_SNAKE_CASE       :    Tuple       =	0
      __SCREAMING_SNAKE_CASE       :    Optional[Any]       =	0
      for prediction, reference in zip(UpperCamelCase     ,  UpperCamelCase				):
       __SCREAMING_SNAKE_CASE       :    Dict       =	jiwer.compute_measures(
           UpperCamelCase     ,  UpperCamelCase     ,  truth_transform=UpperCamelCase     ,  hypothesis_transform=UpperCamelCase     ,  )
       incorrect += measures["substitutions"] + measures["deletions"] + measures["insertions"]
       total += measures["substitutions"] + measures["deletions"] + measures["hits"]

      return incorrect / total











import unittest
from typing import Dict, List, Optional, Union

import numpy as np

from transformers.testing_utils import require_torch, require_vision
from transformers.utils import is_torch_available, is_vision_available

from ...test_image_processing_common import ImageProcessingSavingTestMixin, prepare_image_inputs


if is_torch_available():
      import torch

if is_vision_available():
      from PIL import Image

      from transformers import BridgeTowerImageProcessor

class       _SCREAMING_SNAKE_CASE	(unittest.TestCase ):





     def __init__(       self :							Union[str, Any]     ,  UpperCamelCase :							List[Any]     ,  UpperCamelCase :							bool = True     ,  UpperCamelCase :							Dict[str, int] = None     ,  UpperCamelCase :							int = 3_2     ,  UpperCamelCase :							bool = True     ,  UpperCamelCase :							Union[int, float] = 1 / 2_5_5     ,  UpperCamelCase :							bool = True     ,  UpperCamelCase :							bool = True     ,  UpperCamelCase :							Optional[Union[float, List[float]]] = [0.4_8_1_4_5_4_6_6, 0.4_5_7_8_2_7_5, 0.4_0_8_2_1_0_7_3]     ,  UpperCamelCase :							Optional[Union[float, List[float]]] = [0.2_6_8_6_2_9_5_4, 0.2_6_1_3_0_2_5_8, 0.2_7_5_7_7_7_1_1]     ,  UpperCamelCase :							bool = True     ,  UpperCamelCase :							Dict=7     ,  UpperCamelCase :							Dict=3_0     ,  UpperCamelCase :							Tuple=4_0_0     ,  UpperCamelCase :							Union[str, Any]=3     ,  )->Optional[int]:
      __SCREAMING_SNAKE_CASE       :    Optional[Any]       =	parent
      __SCREAMING_SNAKE_CASE       :    str       =	do_resize
      __SCREAMING_SNAKE_CASE       :    Optional[int]       =	size if size is not None else {"shortest_edge": 2_8_8}
      __SCREAMING_SNAKE_CASE       :    List[str]       =	size_divisor
      __SCREAMING_SNAKE_CASE       :    str       =	do_rescale
      __SCREAMING_SNAKE_CASE       :    int       =	rescale_factor
      __SCREAMING_SNAKE_CASE       :    Tuple       =	do_normalize
      __SCREAMING_SNAKE_CASE       :    List[Any]       =	do_center_crop
      __SCREAMING_SNAKE_CASE       :    List[str]       =	image_mean
      __SCREAMING_SNAKE_CASE       :    Optional[Any]       =	image_std
      __SCREAMING_SNAKE_CASE       :    Optional[int]       =	do_pad
      __SCREAMING_SNAKE_CASE       :    Union[str, Any]       =	batch_size
      __SCREAMING_SNAKE_CASE       :    str       =	num_channels
      __SCREAMING_SNAKE_CASE       :    List[str]       =	min_resolution
      __SCREAMING_SNAKE_CASE       :    Tuple       =	max_resolution





     def 	__snake_case    (       self :							Optional[Any]				)->List[str]:
      return {
          "image_mean": self.image_mean,
          "image_std": self.image_std,
          "do_normalize": self.do_normalize,
          "do_resize": self.do_resize,
          "size": self.size,
          "size_divisor": self.size_divisor,
      }






     def 	__snake_case    (       self :							Optional[Any]     ,  UpperCamelCase :							Optional[int]     ,  UpperCamelCase :							Dict=False				)->Optional[Any]:
      if not batched:
       __SCREAMING_SNAKE_CASE       :    Optional[int]       =	self.size["shortest_edge"]
       __SCREAMING_SNAKE_CASE       :    List[Any]       =	image_inputs[0]
       if isinstance(UpperCamelCase     ,  Image.Image				):
        __SCREAMING_SNAKE_CASE,		__SCREAMING_SNAKE_CASE       :    List[Any]       =	image.size
       else:
        __SCREAMING_SNAKE_CASE,		__SCREAMING_SNAKE_CASE       :    Union[str, Any]       =	image.shape[1], image.shape[2]
       __SCREAMING_SNAKE_CASE       :    Tuple       =	size / min(UpperCamelCase     ,  UpperCamelCase				)
       if h < w:
        __SCREAMING_SNAKE_CASE,		__SCREAMING_SNAKE_CASE       :    int       =	size, scale * w
       else:
        __SCREAMING_SNAKE_CASE,		__SCREAMING_SNAKE_CASE       :    List[str]       =	scale * h, size

       __SCREAMING_SNAKE_CASE       :    Optional[Any]       =	int((1_3_3_3 / 8_0_0) * size				)
       if max(UpperCamelCase     ,  UpperCamelCase				) > max_size:
        __SCREAMING_SNAKE_CASE       :    Any       =	max_size / max(UpperCamelCase     ,  UpperCamelCase				)
        __SCREAMING_SNAKE_CASE       :    List[Any]       =	newh * scale
        __SCREAMING_SNAKE_CASE       :    Optional[int]       =	neww * scale

       __SCREAMING_SNAKE_CASE,		__SCREAMING_SNAKE_CASE       :    List[Any]       =	int(newh + 0.5				), int(neww + 0.5				)
       __SCREAMING_SNAKE_CASE,		__SCREAMING_SNAKE_CASE       :    Optional[Any]       =	(
           newh // self.size_divisor * self.size_divisor,
           neww // self.size_divisor * self.size_divisor,
       )

      else:
       __SCREAMING_SNAKE_CASE       :    Optional[int]       =	[]
       for image in image_inputs:
        __SCREAMING_SNAKE_CASE,		__SCREAMING_SNAKE_CASE       :    Optional[Any]       =	self.get_expected_values([image]				)
        expected_values.append((expected_height, expected_width)				)
       __SCREAMING_SNAKE_CASE       :    int       =	max(UpperCamelCase     ,  key=lambda UpperCamelCase				: item[0]				)[0]
       __SCREAMING_SNAKE_CASE       :    List[str]       =	max(UpperCamelCase     ,  key=lambda UpperCamelCase				: item[1]				)[1]

      return expected_height, expected_width






@require_torch
@require_vision
class       _SCREAMING_SNAKE_CASE	(UpperCamelCase			,    unittest.TestCase ):
     lowerCAmelCase					=			BridgeTowerImageProcessor if is_vision_available() else None





     def 	__snake_case    (       self :							str				)->int:
      __SCREAMING_SNAKE_CASE       :    str       =	BridgeTowerImageProcessingTester(self				)





     @property
     def 	__snake_case    (       self :							str				)->Any:
      return self.image_processor_tester.prepare_image_processor_dict()





     def 	__snake_case    (       self :							Optional[int]				)->Dict:
      __SCREAMING_SNAKE_CASE       :    Union[str, Any]       =	self.image_processing_class(**self.image_processor_dict				)
      self.assertTrue(hasattr(UpperCamelCase     ,  "image_mean"				)				)
      self.assertTrue(hasattr(UpperCamelCase     ,  "image_std"				)				)
      self.assertTrue(hasattr(UpperCamelCase     ,  "do_normalize"				)				)
      self.assertTrue(hasattr(UpperCamelCase     ,  "do_resize"				)				)
      self.assertTrue(hasattr(UpperCamelCase     ,  "size"				)				)
      self.assertTrue(hasattr(UpperCamelCase     ,  "size_divisor"				)				)





     def 	__snake_case    (       self :							Optional[int]				)->int:
      pass





     def 	__snake_case    (       self :							str				)->Union[str, Any]:
      # Initialize image processor
      __SCREAMING_SNAKE_CASE       :    Any       =	self.image_processing_class(**self.image_processor_dict				)
      # create random PIL images
      __SCREAMING_SNAKE_CASE       :    Optional[int]       =	prepare_image_inputs(self.image_processor_tester     ,  equal_resolution=UpperCamelCase				)
      for image in image_inputs:
       self.assertIsInstance(UpperCamelCase     ,  Image.Image				)

      # Test not batched input
      __SCREAMING_SNAKE_CASE       :    Optional[Any]       =	image_processing(image_inputs[0]     ,  return_tensors="pt"				).pixel_values

      __SCREAMING_SNAKE_CASE,		__SCREAMING_SNAKE_CASE       :    Tuple       =	self.image_processor_tester.get_expected_values(UpperCamelCase				)
      self.assertEqual(
          encoded_images.shape     ,  (1, self.image_processor_tester.num_channels, expected_height, expected_width)     ,  )

      # Test batched
      __SCREAMING_SNAKE_CASE       :    Any       =	image_processing(UpperCamelCase     ,  return_tensors="pt"				).pixel_values

      __SCREAMING_SNAKE_CASE,		__SCREAMING_SNAKE_CASE       :    Union[str, Any]       =	self.image_processor_tester.get_expected_values(UpperCamelCase     ,  batched=UpperCamelCase				)
      self.assertEqual(
          encoded_images.shape     ,  (
              self.image_processor_tester.batch_size,
              self.image_processor_tester.num_channels,
              expected_height,
              expected_width,
          )     ,  )





     def 	__snake_case    (       self :							List[str]				)->Optional[int]:
      # Initialize image processor
      __SCREAMING_SNAKE_CASE       :    List[Any]       =	self.image_processing_class(**self.image_processor_dict				)
      # create random numpy tensors
      __SCREAMING_SNAKE_CASE       :    Union[str, Any]       =	prepare_image_inputs(self.image_processor_tester     ,  equal_resolution=UpperCamelCase     ,  numpify=UpperCamelCase				)
      for image in image_inputs:
       self.assertIsInstance(UpperCamelCase     ,  np.ndarray				)

      # Test not batched input
      __SCREAMING_SNAKE_CASE       :    Optional[Any]       =	image_processing(image_inputs[0]     ,  return_tensors="pt"				).pixel_values

      __SCREAMING_SNAKE_CASE,		__SCREAMING_SNAKE_CASE       :    Optional[int]       =	self.image_processor_tester.get_expected_values(UpperCamelCase				)
      self.assertEqual(
          encoded_images.shape     ,  (1, self.image_processor_tester.num_channels, expected_height, expected_width)     ,  )

      # Test batched
      __SCREAMING_SNAKE_CASE       :    str       =	image_processing(UpperCamelCase     ,  return_tensors="pt"				).pixel_values

      __SCREAMING_SNAKE_CASE,		__SCREAMING_SNAKE_CASE       :    List[Any]       =	self.image_processor_tester.get_expected_values(UpperCamelCase     ,  batched=UpperCamelCase				)
      self.assertEqual(
          encoded_images.shape     ,  (
              self.image_processor_tester.batch_size,
              self.image_processor_tester.num_channels,
              expected_height,
              expected_width,
          )     ,  )






     def 	__snake_case    (       self :							Optional[Any]				)->Union[str, Any]:
      # Initialize image processor
      __SCREAMING_SNAKE_CASE       :    Dict       =	self.image_processing_class(**self.image_processor_dict				)
      # create random PyTorch tensors
      __SCREAMING_SNAKE_CASE       :    List[str]       =	prepare_image_inputs(self.image_processor_tester     ,  equal_resolution=UpperCamelCase     ,  torchify=UpperCamelCase				)
      for image in image_inputs:
       self.assertIsInstance(UpperCamelCase     ,  torch.Tensor				)

      # Test not batched input
      __SCREAMING_SNAKE_CASE       :    Optional[int]       =	image_processing(image_inputs[0]     ,  return_tensors="pt"				).pixel_values

      __SCREAMING_SNAKE_CASE,		__SCREAMING_SNAKE_CASE       :    Dict       =	self.image_processor_tester.get_expected_values(UpperCamelCase				)
      self.assertEqual(
          encoded_images.shape     ,  (1, self.image_processor_tester.num_channels, expected_height, expected_width)     ,  )

      # Test batched
      __SCREAMING_SNAKE_CASE       :    str       =	image_processing(UpperCamelCase     ,  return_tensors="pt"				).pixel_values

      __SCREAMING_SNAKE_CASE,		__SCREAMING_SNAKE_CASE       :    Any       =	self.image_processor_tester.get_expected_values(UpperCamelCase     ,  batched=UpperCamelCase				)
      self.assertEqual(
          encoded_images.shape     ,  (
              self.image_processor_tester.batch_size,
              self.image_processor_tester.num_channels,
              expected_height,
              expected_width,
          )     ,  )






