

'''simple docstring'''





import os
from dataclasses import dataclass, field
from io import BytesIO
from typing import TYPE_CHECKING, Any, ClassVar, Dict, Optional, Union

import numpy as np
import pyarrow as pa

from .. import config
from ..download.streaming_download_manager import xopen, xsplitext
from ..table import array_cast
from ..utils.py_utils import no_op_if_value_is_null, string_to_dict


if TYPE_CHECKING:
							from .features import FeatureType


UpperCamelCase_	,      UpperCamelCase_	,      UpperCamelCase_      	=					False, False, False





@dataclass
class 		__SCREAMING_SNAKE_CASE       :
				lowerCamelCase_							=						None
				lowerCamelCase_							=						True
				lowerCamelCase_							=						True
				lowerCamelCase_							=						None
				# Automatically constructed
				lowerCamelCase_							=						'dict'
				lowerCamelCase_							=						pa.struct({'bytes': pa.binary(), 'path': pa.string()}			)
				lowerCamelCase_							=						field(default='Audio'	,       init=lowercase__	,       repr=lowercase__			)







				def __call__(					self    :		Tuple      ):
										'''simple docstring'''
										return self.pa_type







				def    lowerCamelCase_  (					self    :		Tuple		,				UpperCAmelCase__    :		Union[str, bytes, dict]      ):
										'''simple docstring'''
										try:
																import soundfile as sf  # soundfile is a dependency of librosa, needed to decode audio files.
										except ImportError as err:
																raise ImportError('''To support encoding audio data, please install \'soundfile\'.'''      ) from err
										if isinstance(UpperCAmelCase__		,				UpperCAmelCase__      ):
																return {"bytes": None, "path": value}
										elif isinstance(UpperCAmelCase__		,				UpperCAmelCase__      ):
																return {"bytes": value, "path": None}
										elif "array" in value:
																# convert the audio array to wav bytes
																lowercase   :       Optional[int]								=BytesIO()
																sf.write(UpperCAmelCase__		,				value['''array''']		,				value['''sampling_rate''']		,				format='''wav'''      )
																return {"bytes": buffer.getvalue(), "path": None}
										elif value.get('''path'''      ) is not None and os.path.isfile(value['''path''']      ):
																# we set "bytes": None to not duplicate the data if they're already available locally
																if value["path"].endswith('''pcm'''      ):
																						# "PCM" only has raw audio bytes
																						if value.get('''sampling_rate'''      ) is None:
																												# At least, If you want to convert "PCM-byte" to "WAV-byte", you have to know sampling rate
																												raise KeyError('''To use PCM files, please specify a \'sampling_rate\' in Audio object'''      )
																						if value.get('''bytes'''      ):
																												# If we already had PCM-byte, we don`t have to make "read file, make bytes" (just use it!)
																												lowercase   :       Optional[int]								=np.frombuffer(value['''bytes''']		,				dtype=np.intaa      ).astype(np.floataa      ) / 32767
																						else:
																												lowercase   :       Union[str, Any]								=np.memmap(value['''path''']		,				dtype='''h'''		,				mode='''r'''      ).astype(np.floataa      ) / 32767

																						lowercase   :       Tuple								=BytesIO(bytes()      )
																						sf.write(UpperCAmelCase__		,				UpperCAmelCase__		,				value['''sampling_rate''']		,				format='''wav'''      )
																						return {"bytes": buffer.getvalue(), "path": None}
																else:
																						return {"bytes": None, "path": value.get('''path'''      )}
										elif value.get('''bytes'''      ) is not None or value.get('''path'''      ) is not None:
																# store the audio bytes, and path is used to infer the audio format using the file extension
																return {"bytes": value.get('''bytes'''      ), "path": value.get('''path'''      )}
										else:
																raise ValueError(
																    F'''An audio sample should have one of \'path\' or \'bytes\' but they are missing or None in {value}.'''      )







				def    lowerCamelCase_  (					self    :		int		,				UpperCAmelCase__    :		dict		,				UpperCAmelCase__    :		Optional[Dict[str, Union[str, bool, None]]] = None      ):
										'''simple docstring'''
										if not self.decode:
																raise RuntimeError('''Decoding is disabled for this feature. Please use Audio(decode=True) instead.'''      )

										lowercase   :       str								=(value['''path'''], BytesIO(value['''bytes''']      )) if value['''bytes'''] is not None else (value['''path'''], None)
										if path is None and file is None:
																raise ValueError(F'''An audio sample should have one of \'path\' or \'bytes\' but both are None in {value}.'''      )

										try:
																import librosa
																import soundfile as sf
										except ImportError as err:
																raise ImportError('''To support decoding audio files, please install \'librosa\' and \'soundfile\'.'''      ) from err

										lowercase   :       Union[str, Any]								=xsplitext(UpperCAmelCase__      )[1][1:].lower() if path is not None else None
										if not config.IS_OPUS_SUPPORTED and audio_format == "opus":
																raise RuntimeError(
																    '''Decoding \'opus\' files requires system library \'libsndfile\'>=1.0.31, '''
																    '''You can try to update `soundfile` python library: `pip install "soundfile>=0.12.1"`. '''      )
										elif not config.IS_MP3_SUPPORTED and audio_format == "mp3":
																raise RuntimeError(
																    '''Decoding \'mp3\' files requires system library \'libsndfile\'>=1.1.0, '''
																    '''You can try to update `soundfile` python library: `pip install "soundfile>=0.12.1"`. '''      )

										if file is None:
																lowercase   :       List[str]								=token_per_repo_id or {}
																lowercase   :       Dict								=path.split('''::'''      )[-1]
																try:
																						lowercase   :       Optional[Any]								=string_to_dict(UpperCAmelCase__		,				config.HUB_DATASETS_URL      )['''repo_id''']
																						lowercase   :       Optional[int]								=token_per_repo_id[repo_id]
																except (ValueError, KeyError):
																						lowercase   :       List[Any]								=None

																with xopen(UpperCAmelCase__		,				'''rb'''		,				use_auth_token=UpperCAmelCase__      ) as f:
																						lowercase   :       Any								=sf.read(UpperCAmelCase__      )

										else:
																lowercase   :       Optional[Any]								=sf.read(UpperCAmelCase__      )

										lowercase   :       int								=array.T
										if self.mono:
																lowercase   :       Tuple								=librosa.to_mono(UpperCAmelCase__      )
										if self.sampling_rate and self.sampling_rate != sampling_rate:
																lowercase   :       Union[str, Any]								=librosa.resample(UpperCAmelCase__		,				orig_sr=UpperCAmelCase__		,				target_sr=self.sampling_rate      )
																lowercase   :       str								=self.sampling_rate

										return {"path": path, "array": array, "sampling_rate": sampling_rate}







				def    lowerCamelCase_  (					self    :		str      ):
										'''simple docstring'''
										from .features import Value

										if self.decode:
																raise ValueError('''Cannot flatten a decoded Audio feature.'''      )
										return {
										    "bytes": Value('''binary'''      ),
										    "path": Value('''string'''      ),
										}







				def    lowerCamelCase_  (					self    :		Any		,				UpperCAmelCase__    :		Union[pa.StringArray, pa.StructArray]      ):
										'''simple docstring'''
										if pa.types.is_string(storage.type      ):
																lowercase   :       List[Any]								=pa.array([None] * len(UpperCAmelCase__      )		,				type=pa.binary()      )
																lowercase   :       Tuple								=pa.StructArray.from_arrays([bytes_array, storage]		,				['''bytes''', '''path''']		,				mask=storage.is_null()      )
										elif pa.types.is_binary(storage.type      ):
																lowercase   :       List[Any]								=pa.array([None] * len(UpperCAmelCase__      )		,				type=pa.string()      )
																lowercase   :       List[str]								=pa.StructArray.from_arrays([storage, path_array]		,				['''bytes''', '''path''']		,				mask=storage.is_null()      )
										elif pa.types.is_struct(storage.type      ) and storage.type.get_all_field_indices('''array'''      ):
																lowercase   :       int								=pa.array([Audio().encode_example(UpperCAmelCase__      ) if x is not None else None for x in storage.to_pylist()]      )
										elif pa.types.is_struct(storage.type      ):
																if storage.type.get_field_index('''bytes'''      ) >= 0:
																						lowercase   :       Any								=storage.field('''bytes'''      )
																else:
																						lowercase   :       Optional[int]								=pa.array([None] * len(UpperCAmelCase__      )		,				type=pa.binary()      )
																if storage.type.get_field_index('''path'''      ) >= 0:
																						lowercase   :       Optional[Any]								=storage.field('''path'''      )
																else:
																						lowercase   :       Dict								=pa.array([None] * len(UpperCAmelCase__      )		,				type=pa.string()      )
																lowercase   :       Optional[Any]								=pa.StructArray.from_arrays([bytes_array, path_array]		,				['''bytes''', '''path''']		,				mask=storage.is_null()      )
										return array_cast(UpperCAmelCase__		,				self.pa_type      )







				def    lowerCamelCase_  (					self    :		Tuple		,				UpperCAmelCase__    :		pa.StructArray      ):
										'''simple docstring'''

										@no_op_if_value_is_null
										def path_to_bytes(UpperCAmelCase__    :		Tuple      ):
																with xopen(UpperCAmelCase__		,				'''rb'''      ) as f:
																						lowercase   :       str								=f.read()
																return bytes_

										lowercase   :       List[Any]								=pa.array(
										    [
										        (path_to_bytes(x['''path''']      ) if x['''bytes'''] is None else x['''bytes''']) if x is not None else None
										        for x in storage.to_pylist()
										    ]		,				type=pa.binary()		,				)
										lowercase   :       Optional[Any]								=pa.array(
										    [os.path.basename(UpperCAmelCase__      ) if path is not None else None for path in storage.field('''path'''      ).to_pylist()]		,				type=pa.string()		,				)
										lowercase   :       List[str]								=pa.StructArray.from_arrays([bytes_array, path_array]		,				['''bytes''', '''path''']		,				mask=bytes_array.is_null()      )
										return array_cast(UpperCAmelCase__		,				self.pa_type      )








'''simple docstring'''





import mpmath  # for roots of unity
import numpy as np





class 		__SCREAMING_SNAKE_CASE       :







				def __init__(					self    :		Union[str, Any]		,				UpperCAmelCase__    :		List[Any]=None		,				UpperCAmelCase__    :		Optional[Any]=None      ):
										'''simple docstring'''
										# Input as list
										lowercase   :       Optional[int]								=list(poly_a or [0]      )[:]
										lowercase   :       Optional[Any]								=list(poly_b or [0]      )[:]

										# Remove leading zero coefficients
										while self.polyA[-1] == 0:
																self.polyA.pop()
										lowercase   :       Any								=len(self.polyA      )

										while self.polyB[-1] == 0:
																self.polyB.pop()
										lowercase   :       Dict								=len(self.polyB      )

										# Add 0 to make lengths equal a power of 2
										lowercase   :       int								=int(
										    2 ** np.ceil(np.loga(len(self.polyA      ) + len(self.polyB      ) - 1      )      )      )

										while len(self.polyA      ) < self.c_max_length:
																self.polyA.append(0      )
										while len(self.polyB      ) < self.c_max_length:
																self.polyB.append(0      )
										# A complex root used for the fourier transform
										lowercase   :       Union[str, Any]								=complex(mpmath.root(x=1		,				n=self.c_max_length		,				k=1      )      )

										# The product
										lowercase   :       Tuple								=self.__multiply()







				def    lowerCamelCase_  (					self    :		Union[str, Any]		,				UpperCAmelCase__    :		Tuple      ):
										'''simple docstring'''
										lowercase   :       Union[str, Any]								=[[x] for x in self.polyA] if which == '''A''' else [[x] for x in self.polyB]
										# Corner case
										if len(UpperCAmelCase__      ) <= 1:
																return dft[0]
										#
										lowercase   :       Any								=self.c_max_length // 2
										while next_ncol > 0:
																lowercase   :       Optional[int]								=[[] for i in range(UpperCAmelCase__      )]
																lowercase   :       Tuple								=self.root**next_ncol

																# First half of next step
																lowercase   :       str								=1
																for j in range(self.c_max_length // (next_ncol * 2)      ):
																						for i in range(UpperCAmelCase__      ):
																												new_dft[i].append(dft[i][j] + current_root * dft[i + next_ncol][j]      )
																						current_root *= root
																# Second half of next step
																lowercase   :       int								=1
																for j in range(self.c_max_length // (next_ncol * 2)      ):
																						for i in range(UpperCAmelCase__      ):
																												new_dft[i].append(dft[i][j] - current_root * dft[i + next_ncol][j]      )
																						current_root *= root
																# Update
																lowercase   :       Dict								=new_dft
																lowercase   :       Tuple								=next_ncol // 2
										return dft[0]







				def    lowerCamelCase_  (					self    :		List[Any]      ):
										'''simple docstring'''
										lowercase   :       Any								=self.__dft('''A'''      )
										lowercase   :       Any								=self.__dft('''B'''      )
										lowercase   :       Optional[int]								=[[dft_a[i] * dft_b[i] for i in range(self.c_max_length      )]]
										del dft_a
										del dft_b

										# Corner Case
										if len(inverce_c[0]      ) <= 1:
																return inverce_c[0]
										# Inverse DFT
										lowercase   :       Optional[int]								=2
										while next_ncol <= self.c_max_length:
																lowercase   :       Optional[int]								=[[] for i in range(UpperCAmelCase__      )]
																lowercase   :       List[str]								=self.root ** (next_ncol // 2)
																lowercase   :       Optional[int]								=1
																# First half of next step
																for j in range(self.c_max_length // next_ncol      ):
																						for i in range(next_ncol // 2      ):
																												# Even positions
																												new_inverse_c[i].append(
																												    (
																												        inverce_c[i][j]
																												        + inverce_c[i][j + self.c_max_length // next_ncol]
																												    )
																												    / 2      )
																												# Odd positions
																												new_inverse_c[i + next_ncol // 2].append(
																												    (
																												        inverce_c[i][j]
																												        - inverce_c[i][j + self.c_max_length // next_ncol]
																												    )
																												    / (2 * current_root)      )
																						current_root *= root
																# Update
																lowercase   :       List[Any]								=new_inverse_c
																next_ncol *= 2
										# Unpack
										lowercase   :       Tuple								=[round(x[0].real		,				8      ) + round(x[0].imag		,				8      ) * 1J for x in inverce_c]

										# Remove leading 0's
										while inverce_c[-1] == 0:
																inverce_c.pop()
										return inverce_c







				def __str__(					self    :		Any      ):
										'''simple docstring'''
										lowercase   :       Any								='''A = ''' + ''' + '''.join(
										    F'''{coef}*x^{i}''' for coef, i in enumerate(self.polyA[: self.len_A]      )      )
										lowercase   :       Tuple								='''B = ''' + ''' + '''.join(
										    F'''{coef}*x^{i}''' for coef, i in enumerate(self.polyB[: self.len_B]      )      )
										lowercase   :       List[str]								='''A*B = ''' + ''' + '''.join(
										    F'''{coef}*x^{i}''' for coef, i in enumerate(self.product      )      )

										return F'''{a}\n{b}\n{c}'''


# Unit tests
if __name__ == "__main__":
							import doctest

							doctest.testmod()





