




from typing import Dict, List, Optional, Union

import numpy as np

from ...image_processing_utils import BaseImageProcessor, BatchFeature, get_size_dict
from ...image_transforms import (
    center_crop,
    convert_to_rgb,
    get_resize_output_image_size,
    normalize,
    rescale,
    resize,
    to_channel_dimension_format,
)
from ...image_utils import (
    OPENAI_CLIP_MEAN,
    OPENAI_CLIP_STD,
    ChannelDimension,
    ImageInput,
    PILImageResampling,
    make_list_of_images,
    to_numpy_array,
    valid_images,
)
from ...utils import TensorType, is_vision_available, logging


a													=			logging.get_logger(__name__)


if is_vision_available():
				import PIL




class       _A				(		__lowercase     ):
		__a					    =       ["""pixel_values"""]






		def __init__(    self						,		_SCREAMING_SNAKE_CASE = True						,		_SCREAMING_SNAKE_CASE = None						,		_SCREAMING_SNAKE_CASE = PILImageResampling.BICUBIC						,		_SCREAMING_SNAKE_CASE = True						,		_SCREAMING_SNAKE_CASE = None						,		_SCREAMING_SNAKE_CASE = True						,		_SCREAMING_SNAKE_CASE = 1 / 255						,		_SCREAMING_SNAKE_CASE = True						,		_SCREAMING_SNAKE_CASE = None						,		_SCREAMING_SNAKE_CASE = None						,		_SCREAMING_SNAKE_CASE = True						,		**_SCREAMING_SNAKE_CASE						,		):
								super().__init__(**_SCREAMING_SNAKE_CASE			)
								_UpperCAmelCase      =			size if size is not None else {"""shortest_edge""": 224}
								_UpperCAmelCase      =			get_size_dict(_SCREAMING_SNAKE_CASE						,		default_to_square=_SCREAMING_SNAKE_CASE			)
								_UpperCAmelCase      =			crop_size if crop_size is not None else {"""height""": 224, """width""": 224}
								_UpperCAmelCase      =			get_size_dict(_SCREAMING_SNAKE_CASE						,		default_to_square=_SCREAMING_SNAKE_CASE						,		param_name="""crop_size"""			)

								_UpperCAmelCase      =			do_resize
								_UpperCAmelCase      =			size
								_UpperCAmelCase      =			resample
								_UpperCAmelCase      =			do_center_crop
								_UpperCAmelCase      =			crop_size
								_UpperCAmelCase      =			do_rescale
								_UpperCAmelCase      =			rescale_factor
								_UpperCAmelCase      =			do_normalize
								_UpperCAmelCase      =			image_mean if image_mean is not None else OPENAI_CLIP_MEAN
								_UpperCAmelCase      =			image_std if image_std is not None else OPENAI_CLIP_STD
								_UpperCAmelCase      =			do_convert_rgb






		def 				UpperCAmelCase (    self						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE = PILImageResampling.BICUBIC						,		_SCREAMING_SNAKE_CASE = None						,		**_SCREAMING_SNAKE_CASE						,		):
								_UpperCAmelCase      =			get_size_dict(_SCREAMING_SNAKE_CASE						,		default_to_square=_SCREAMING_SNAKE_CASE			)
								if "shortest_edge" not in size:
														raise ValueError(F"The `size` parameter must contain the key `shortest_edge`. Got {size.keys()}"			)
								_UpperCAmelCase      =			get_resize_output_image_size(_SCREAMING_SNAKE_CASE						,		size=size["""shortest_edge"""]						,		default_to_square=_SCREAMING_SNAKE_CASE			)
								return resize(_SCREAMING_SNAKE_CASE						,		size=_SCREAMING_SNAKE_CASE						,		resample=_SCREAMING_SNAKE_CASE						,		data_format=_SCREAMING_SNAKE_CASE						,		**_SCREAMING_SNAKE_CASE			)






		def 				UpperCAmelCase (    self						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE = None						,		**_SCREAMING_SNAKE_CASE						,		):
								_UpperCAmelCase      =			get_size_dict(_SCREAMING_SNAKE_CASE			)
								if "height" not in size or "width" not in size:
														raise ValueError(F"The `size` parameter must contain the keys (height, width). Got {size.keys()}"			)
								return center_crop(_SCREAMING_SNAKE_CASE						,		size=(size["""height"""], size["""width"""])						,		data_format=_SCREAMING_SNAKE_CASE						,		**_SCREAMING_SNAKE_CASE			)






		def 				UpperCAmelCase (    self						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE = None						,		**_SCREAMING_SNAKE_CASE						,		):
								return rescale(_SCREAMING_SNAKE_CASE						,		scale=_SCREAMING_SNAKE_CASE						,		data_format=_SCREAMING_SNAKE_CASE						,		**_SCREAMING_SNAKE_CASE			)






		def 				UpperCAmelCase (    self						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE = None						,		**_SCREAMING_SNAKE_CASE						,		):
								return normalize(_SCREAMING_SNAKE_CASE						,		mean=_SCREAMING_SNAKE_CASE						,		std=_SCREAMING_SNAKE_CASE						,		data_format=_SCREAMING_SNAKE_CASE						,		**_SCREAMING_SNAKE_CASE			)






		def 				UpperCAmelCase (    self						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE = None						,		_SCREAMING_SNAKE_CASE = None						,		_SCREAMING_SNAKE_CASE = None						,		_SCREAMING_SNAKE_CASE = None						,		_SCREAMING_SNAKE_CASE = None						,		_SCREAMING_SNAKE_CASE = None						,		_SCREAMING_SNAKE_CASE = None						,		_SCREAMING_SNAKE_CASE = None						,		_SCREAMING_SNAKE_CASE = None						,		_SCREAMING_SNAKE_CASE = None						,		_SCREAMING_SNAKE_CASE = None						,		_SCREAMING_SNAKE_CASE = None						,		_SCREAMING_SNAKE_CASE = ChannelDimension.FIRST						,		**_SCREAMING_SNAKE_CASE						,		):
								_UpperCAmelCase      =			do_resize if do_resize is not None else self.do_resize
								_UpperCAmelCase      =			size if size is not None else self.size
								_UpperCAmelCase      =			get_size_dict(_SCREAMING_SNAKE_CASE						,		param_name="""size"""						,		default_to_square=_SCREAMING_SNAKE_CASE			)
								_UpperCAmelCase      =			resample if resample is not None else self.resample
								_UpperCAmelCase      =			do_center_crop if do_center_crop is not None else self.do_center_crop
								_UpperCAmelCase      =			crop_size if crop_size is not None else self.crop_size
								_UpperCAmelCase      =			get_size_dict(_SCREAMING_SNAKE_CASE						,		param_name="""crop_size"""						,		default_to_square=_SCREAMING_SNAKE_CASE			)
								_UpperCAmelCase      =			do_rescale if do_rescale is not None else self.do_rescale
								_UpperCAmelCase      =			rescale_factor if rescale_factor is not None else self.rescale_factor
								_UpperCAmelCase      =			do_normalize if do_normalize is not None else self.do_normalize
								_UpperCAmelCase      =			image_mean if image_mean is not None else self.image_mean
								_UpperCAmelCase      =			image_std if image_std is not None else self.image_std
								_UpperCAmelCase      =			do_convert_rgb if do_convert_rgb is not None else self.do_convert_rgb

								_UpperCAmelCase      =			make_list_of_images(_SCREAMING_SNAKE_CASE			)

								if not valid_images(_SCREAMING_SNAKE_CASE			):
														raise ValueError(
														    """Invalid image type. Must be of type PIL.Image.Image, numpy.ndarray, """
														    """torch.Tensor, tf.Tensor or jax.ndarray."""			)

								if do_resize and size is None:
														raise ValueError("""Size must be specified if do_resize is True."""			)

								if do_center_crop and crop_size is None:
														raise ValueError("""Crop size must be specified if do_center_crop is True."""			)

								if do_rescale and rescale_factor is None:
														raise ValueError("""Rescale factor must be specified if do_rescale is True."""			)

								if do_normalize and (image_mean is None or image_std is None):
														raise ValueError("""Image mean and std must be specified if do_normalize is True."""			)

								# PIL RGBA images are converted to RGB
								if do_convert_rgb:
														_UpperCAmelCase      =			[convert_to_rgb(_SCREAMING_SNAKE_CASE			) for image in images]

								# All transformations expect numpy arrays.
								_UpperCAmelCase      =			[to_numpy_array(_SCREAMING_SNAKE_CASE			) for image in images]

								if do_resize:
														_UpperCAmelCase      =			[self.resize(image=_SCREAMING_SNAKE_CASE						,		size=_SCREAMING_SNAKE_CASE						,		resample=_SCREAMING_SNAKE_CASE			) for image in images]

								if do_center_crop:
														_UpperCAmelCase      =			[self.center_crop(image=_SCREAMING_SNAKE_CASE						,		size=_SCREAMING_SNAKE_CASE			) for image in images]

								if do_rescale:
														_UpperCAmelCase      =			[self.rescale(image=_SCREAMING_SNAKE_CASE						,		scale=_SCREAMING_SNAKE_CASE			) for image in images]

								if do_normalize:
														_UpperCAmelCase      =			[self.normalize(image=_SCREAMING_SNAKE_CASE						,		mean=_SCREAMING_SNAKE_CASE						,		std=_SCREAMING_SNAKE_CASE			) for image in images]

								_UpperCAmelCase      =			[to_channel_dimension_format(_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE			) for image in images]

								_UpperCAmelCase      =			{"""pixel_values""": images}
								return BatchFeature(data=_SCREAMING_SNAKE_CASE						,		tensor_type=_SCREAMING_SNAKE_CASE			)





from dataclasses import dataclass
from typing import Optional

import numpy as np
import torch
import torch.nn as nn

from ..utils import BaseOutput, is_torch_version, randn_tensor
from .attention_processor import SpatialNorm
from .unet_ad_blocks import UNetMidBlockaD, get_down_block, get_up_block




@dataclass
class       _A				(		__lowercase     ):
		__a					    =       42




class       _A				(		nn.Module     ):






		def __init__(    self						,		_SCREAMING_SNAKE_CASE=3						,		_SCREAMING_SNAKE_CASE=3						,		_SCREAMING_SNAKE_CASE=("DownEncoderBlock2D",)						,		_SCREAMING_SNAKE_CASE=(64,)						,		_SCREAMING_SNAKE_CASE=2						,		_SCREAMING_SNAKE_CASE=32						,		_SCREAMING_SNAKE_CASE="silu"						,		_SCREAMING_SNAKE_CASE=True						,		):
								super().__init__()
								_UpperCAmelCase      =			layers_per_block

								_UpperCAmelCase      =			torch.nn.Convad(
								    _SCREAMING_SNAKE_CASE						,		block_out_channels[0]						,		kernel_size=3						,		stride=1						,		padding=1						,		)

								_UpperCAmelCase      =			None
								_UpperCAmelCase      =			nn.ModuleList([]			)

								# down
								_UpperCAmelCase      =			block_out_channels[0]
								for i, down_block_type in enumerate(_SCREAMING_SNAKE_CASE			):
														_UpperCAmelCase      =			output_channel
														_UpperCAmelCase      =			block_out_channels[i]
														_UpperCAmelCase      =			i == len(_SCREAMING_SNAKE_CASE			) - 1

														_UpperCAmelCase      =			get_down_block(
														    _SCREAMING_SNAKE_CASE						,		num_layers=self.layers_per_block						,		in_channels=_SCREAMING_SNAKE_CASE						,		out_channels=_SCREAMING_SNAKE_CASE						,		add_downsample=not is_final_block						,		resnet_eps=1e-6						,		downsample_padding=0						,		resnet_act_fn=_SCREAMING_SNAKE_CASE						,		resnet_groups=_SCREAMING_SNAKE_CASE						,		attention_head_dim=_SCREAMING_SNAKE_CASE						,		temb_channels=_SCREAMING_SNAKE_CASE						,		)
														self.down_blocks.append(_SCREAMING_SNAKE_CASE			)

								# mid
								_UpperCAmelCase      =			UNetMidBlockaD(
								    in_channels=block_out_channels[-1]						,		resnet_eps=1e-6						,		resnet_act_fn=_SCREAMING_SNAKE_CASE						,		output_scale_factor=1						,		resnet_time_scale_shift="""default"""						,		attention_head_dim=block_out_channels[-1]						,		resnet_groups=_SCREAMING_SNAKE_CASE						,		temb_channels=_SCREAMING_SNAKE_CASE						,		)

								# out
								_UpperCAmelCase      =			nn.GroupNorm(num_channels=block_out_channels[-1]						,		num_groups=_SCREAMING_SNAKE_CASE						,		eps=1e-6			)
								_UpperCAmelCase      =			nn.SiLU()

								_UpperCAmelCase      =			2 * out_channels if double_z else out_channels
								_UpperCAmelCase      =			nn.Convad(block_out_channels[-1]						,		_SCREAMING_SNAKE_CASE						,		3						,		padding=1			)

								_UpperCAmelCase      =			False






		def 				UpperCAmelCase (    self						,		_SCREAMING_SNAKE_CASE			):
								_UpperCAmelCase      =			x
								_UpperCAmelCase      =			self.conv_in(_SCREAMING_SNAKE_CASE			)

								if self.training and self.gradient_checkpointing:

														def create_custom_forward(_SCREAMING_SNAKE_CASE			):
																				def custom_forward(*_SCREAMING_SNAKE_CASE			):
																										return module(*_SCREAMING_SNAKE_CASE			)

																				return custom_forward

														# down
														if is_torch_version(""">="""						,		"""1.11.0"""			):
																				for down_block in self.down_blocks:
																										_UpperCAmelCase      =			torch.utils.checkpoint.checkpoint(
																										    create_custom_forward(_SCREAMING_SNAKE_CASE			)						,		_SCREAMING_SNAKE_CASE						,		use_reentrant=_SCREAMING_SNAKE_CASE			)
																				# middle
																				_UpperCAmelCase      =			torch.utils.checkpoint.checkpoint(
																				    create_custom_forward(self.mid_block			)						,		_SCREAMING_SNAKE_CASE						,		use_reentrant=_SCREAMING_SNAKE_CASE			)
														else:
																				for down_block in self.down_blocks:
																										_UpperCAmelCase      =			torch.utils.checkpoint.checkpoint(create_custom_forward(_SCREAMING_SNAKE_CASE			)						,		_SCREAMING_SNAKE_CASE			)
																				# middle
																				_UpperCAmelCase      =			torch.utils.checkpoint.checkpoint(create_custom_forward(self.mid_block			)						,		_SCREAMING_SNAKE_CASE			)

								else:
														# down
														for down_block in self.down_blocks:
																				_UpperCAmelCase      =			down_block(_SCREAMING_SNAKE_CASE			)

														# middle
														_UpperCAmelCase      =			self.mid_block(_SCREAMING_SNAKE_CASE			)

								# post-process
								_UpperCAmelCase      =			self.conv_norm_out(_SCREAMING_SNAKE_CASE			)
								_UpperCAmelCase      =			self.conv_act(_SCREAMING_SNAKE_CASE			)
								_UpperCAmelCase      =			self.conv_out(_SCREAMING_SNAKE_CASE			)

								return sample




class       _A				(		nn.Module     ):






		def __init__(    self						,		_SCREAMING_SNAKE_CASE=3						,		_SCREAMING_SNAKE_CASE=3						,		_SCREAMING_SNAKE_CASE=("UpDecoderBlock2D",)						,		_SCREAMING_SNAKE_CASE=(64,)						,		_SCREAMING_SNAKE_CASE=2						,		_SCREAMING_SNAKE_CASE=32						,		_SCREAMING_SNAKE_CASE="silu"						,		_SCREAMING_SNAKE_CASE="group"						,		):
								super().__init__()
								_UpperCAmelCase      =			layers_per_block

								_UpperCAmelCase      =			nn.Convad(
								    _SCREAMING_SNAKE_CASE						,		block_out_channels[-1]						,		kernel_size=3						,		stride=1						,		padding=1						,		)

								_UpperCAmelCase      =			None
								_UpperCAmelCase      =			nn.ModuleList([]			)

								_UpperCAmelCase      =			in_channels if norm_type == """spatial""" else None

								# mid
								_UpperCAmelCase      =			UNetMidBlockaD(
								    in_channels=block_out_channels[-1]						,		resnet_eps=1e-6						,		resnet_act_fn=_SCREAMING_SNAKE_CASE						,		output_scale_factor=1						,		resnet_time_scale_shift="""default""" if norm_type == """group""" else norm_type						,		attention_head_dim=block_out_channels[-1]						,		resnet_groups=_SCREAMING_SNAKE_CASE						,		temb_channels=_SCREAMING_SNAKE_CASE						,		)

								# up
								_UpperCAmelCase      =			list(reversed(_SCREAMING_SNAKE_CASE			)			)
								_UpperCAmelCase      =			reversed_block_out_channels[0]
								for i, up_block_type in enumerate(_SCREAMING_SNAKE_CASE			):
														_UpperCAmelCase      =			output_channel
														_UpperCAmelCase      =			reversed_block_out_channels[i]

														_UpperCAmelCase      =			i == len(_SCREAMING_SNAKE_CASE			) - 1

														_UpperCAmelCase      =			get_up_block(
														    _SCREAMING_SNAKE_CASE						,		num_layers=self.layers_per_block + 1						,		in_channels=_SCREAMING_SNAKE_CASE						,		out_channels=_SCREAMING_SNAKE_CASE						,		prev_output_channel=_SCREAMING_SNAKE_CASE						,		add_upsample=not is_final_block						,		resnet_eps=1e-6						,		resnet_act_fn=_SCREAMING_SNAKE_CASE						,		resnet_groups=_SCREAMING_SNAKE_CASE						,		attention_head_dim=_SCREAMING_SNAKE_CASE						,		temb_channels=_SCREAMING_SNAKE_CASE						,		resnet_time_scale_shift=_SCREAMING_SNAKE_CASE						,		)
														self.up_blocks.append(_SCREAMING_SNAKE_CASE			)
														_UpperCAmelCase      =			output_channel

								# out
								if norm_type == "spatial":
														_UpperCAmelCase      =			SpatialNorm(block_out_channels[0]						,		_SCREAMING_SNAKE_CASE			)
								else:
														_UpperCAmelCase      =			nn.GroupNorm(num_channels=block_out_channels[0]						,		num_groups=_SCREAMING_SNAKE_CASE						,		eps=1e-6			)
								_UpperCAmelCase      =			nn.SiLU()
								_UpperCAmelCase      =			nn.Convad(block_out_channels[0]						,		_SCREAMING_SNAKE_CASE						,		3						,		padding=1			)

								_UpperCAmelCase      =			False






		def 				UpperCAmelCase (    self						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE=None			):
								_UpperCAmelCase      =			z
								_UpperCAmelCase      =			self.conv_in(_SCREAMING_SNAKE_CASE			)

								_UpperCAmelCase      =			next(iter(self.up_blocks.parameters()			)			).dtype
								if self.training and self.gradient_checkpointing:

														def create_custom_forward(_SCREAMING_SNAKE_CASE			):
																				def custom_forward(*_SCREAMING_SNAKE_CASE			):
																										return module(*_SCREAMING_SNAKE_CASE			)

																				return custom_forward

														if is_torch_version(""">="""						,		"""1.11.0"""			):
																				# middle
																				_UpperCAmelCase      =			torch.utils.checkpoint.checkpoint(
																				    create_custom_forward(self.mid_block			)						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE						,		use_reentrant=_SCREAMING_SNAKE_CASE			)
																				_UpperCAmelCase      =			sample.to(_SCREAMING_SNAKE_CASE			)

																				# up
																				for up_block in self.up_blocks:
																										_UpperCAmelCase      =			torch.utils.checkpoint.checkpoint(
																										    create_custom_forward(_SCREAMING_SNAKE_CASE			)						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE						,		use_reentrant=_SCREAMING_SNAKE_CASE			)
														else:
																				# middle
																				_UpperCAmelCase      =			torch.utils.checkpoint.checkpoint(
																				    create_custom_forward(self.mid_block			)						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE			)
																				_UpperCAmelCase      =			sample.to(_SCREAMING_SNAKE_CASE			)

																				# up
																				for up_block in self.up_blocks:
																										_UpperCAmelCase      =			torch.utils.checkpoint.checkpoint(create_custom_forward(_SCREAMING_SNAKE_CASE			)						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE			)
								else:
														# middle
														_UpperCAmelCase      =			self.mid_block(_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE			)
														_UpperCAmelCase      =			sample.to(_SCREAMING_SNAKE_CASE			)

														# up
														for up_block in self.up_blocks:
																				_UpperCAmelCase      =			up_block(_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE			)

        # post-process
								if latent_embeds is None:
														_UpperCAmelCase      =			self.conv_norm_out(_SCREAMING_SNAKE_CASE			)
								else:
														_UpperCAmelCase      =			self.conv_norm_out(_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE			)
								_UpperCAmelCase      =			self.conv_act(_SCREAMING_SNAKE_CASE			)
								_UpperCAmelCase      =			self.conv_out(_SCREAMING_SNAKE_CASE			)

								return sample




class       _A				(		nn.Module     ):






		def __init__(    self						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE=None						,		_SCREAMING_SNAKE_CASE="random"						,		_SCREAMING_SNAKE_CASE=False						,		_SCREAMING_SNAKE_CASE=True			):
								super().__init__()
								_UpperCAmelCase      =			n_e
								_UpperCAmelCase      =			vq_embed_dim
								_UpperCAmelCase      =			beta
								_UpperCAmelCase      =			legacy

								_UpperCAmelCase      =			nn.Embedding(self.n_e						,		self.vq_embed_dim			)
								self.embedding.weight.data.uniform_(-1.0 / self.n_e						,		1.0 / self.n_e			)

								_UpperCAmelCase      =			remap
								if self.remap is not None:
														self.register_buffer("""used"""						,		torch.tensor(np.load(self.remap			)			)			)
														_UpperCAmelCase      =			self.used.shape[0]
														_UpperCAmelCase      =			unknown_index  # "random" or "extra" or integer
														if self.unknown_index == "extra":
																				_UpperCAmelCase      =			self.re_embed
																				_UpperCAmelCase      =			self.re_embed + 1
														print(
														    F"Remapping {self.n_e} indices to {self.re_embed} indices. "
														    F"Using {self.unknown_index} for unknown indices."			)
								else:
														_UpperCAmelCase      =			n_e

								_UpperCAmelCase      =			sane_index_shape






		def 				UpperCAmelCase (    self						,		_SCREAMING_SNAKE_CASE			):
								_UpperCAmelCase      =			inds.shape
								assert len(_SCREAMING_SNAKE_CASE			) > 1
								_UpperCAmelCase      =			inds.reshape(ishape[0]						,		-1			)
								_UpperCAmelCase      =			self.used.to(_SCREAMING_SNAKE_CASE			)
								_UpperCAmelCase      =			(inds[:, :, None] == used[None, None, ...]).long()
								_UpperCAmelCase      =			match.argmax(-1			)
								_UpperCAmelCase      =			match.sum(2			) < 1
								if self.unknown_index == "random":
														_UpperCAmelCase      =			torch.randint(0						,		self.re_embed						,		size=new[unknown].shape			).to(device=new.device			)
								else:
														_UpperCAmelCase      =			self.unknown_index
								return new.reshape(_SCREAMING_SNAKE_CASE			)






		def 				UpperCAmelCase (    self						,		_SCREAMING_SNAKE_CASE			):
								_UpperCAmelCase      =			inds.shape
								assert len(_SCREAMING_SNAKE_CASE			) > 1
								_UpperCAmelCase      =			inds.reshape(ishape[0]						,		-1			)
								_UpperCAmelCase      =			self.used.to(_SCREAMING_SNAKE_CASE			)
								if self.re_embed > self.used.shape[0]:  # extra token
														_UpperCAmelCase      =			0  # simply set to zero
								_UpperCAmelCase      =			torch.gather(used[None, :][inds.shape[0] * [0], :]						,		1						,		_SCREAMING_SNAKE_CASE			)
								return back.reshape(_SCREAMING_SNAKE_CASE			)






		def 				UpperCAmelCase (    self						,		_SCREAMING_SNAKE_CASE			):
								# reshape z -> (batch, height, width, channel) and flatten
								_UpperCAmelCase      =			z.permute(0						,		2						,		3						,		1			).contiguous()
								_UpperCAmelCase      =			z.view(-1						,		self.vq_embed_dim			)

								# distances from z to embeddings e_j (z - e)^2 = z^2 + e^2 - 2 e * z
								_UpperCAmelCase      =			torch.argmin(torch.cdist(_SCREAMING_SNAKE_CASE						,		self.embedding.weight			)						,		dim=1			)

								_UpperCAmelCase      =			self.embedding(_SCREAMING_SNAKE_CASE			).view(z.shape			)
								_UpperCAmelCase      =			None
								_UpperCAmelCase      =			None

								# compute loss for embedding
								if not self.legacy:
														_UpperCAmelCase      =			self.beta * torch.mean((z_q.detach() - z) ** 2			) + torch.mean((z_q - z.detach()) ** 2			)
								else:
														_UpperCAmelCase      =			torch.mean((z_q.detach() - z) ** 2			) + self.beta * torch.mean((z_q - z.detach()) ** 2			)

								# preserve gradients
								_UpperCAmelCase      =			z + (z_q - z).detach()

								# reshape back to match original input shape
								_UpperCAmelCase      =			z_q.permute(0						,		3						,		1						,		2			).contiguous()

								if self.remap is not None:
														_UpperCAmelCase      =			min_encoding_indices.reshape(z.shape[0]						,		-1			)  # add batch axis
														_UpperCAmelCase      =			self.remap_to_used(_SCREAMING_SNAKE_CASE			)
														_UpperCAmelCase      =			min_encoding_indices.reshape(-1						,		1			)  # flatten

								if self.sane_index_shape:
														_UpperCAmelCase      =			min_encoding_indices.reshape(z_q.shape[0]						,		z_q.shape[2]						,		z_q.shape[3]			)

								return z_q, loss, (perplexity, min_encodings, min_encoding_indices)






		def 				UpperCAmelCase (    self						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE			):
								# shape specifying (batch, height, width, channel)
								if self.remap is not None:
														_UpperCAmelCase      =			indices.reshape(shape[0]						,		-1			)  # add batch axis
														_UpperCAmelCase      =			self.unmap_to_all(_SCREAMING_SNAKE_CASE			)
														_UpperCAmelCase      =			indices.reshape(-1			)  # flatten again

								# get quantized latent vectors
								_UpperCAmelCase      =			self.embedding(_SCREAMING_SNAKE_CASE			)

								if shape is not None:
														_UpperCAmelCase      =			z_q.view(_SCREAMING_SNAKE_CASE			)
														# reshape back to match original input shape
														_UpperCAmelCase      =			z_q.permute(0						,		3						,		1						,		2			).contiguous()

								return z_q




class       _A				(		__lowercase     ):






		def __init__(    self						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE=False			):
								_UpperCAmelCase      =			parameters
								_UpperCAmelCase    ,					_UpperCAmelCase      =			torch.chunk(_SCREAMING_SNAKE_CASE						,		2						,		dim=1			)
								_UpperCAmelCase      =			torch.clamp(self.logvar						,		-30.0						,		20.0			)
								_UpperCAmelCase      =			deterministic
								_UpperCAmelCase      =			torch.exp(0.5 * self.logvar			)
								_UpperCAmelCase      =			torch.exp(self.logvar			)
								if self.deterministic:
														_UpperCAmelCase      =			_UpperCAmelCase      =			torch.zeros_like(
														    self.mean						,		device=self.parameters.device						,		dtype=self.parameters.dtype			)






		def 				UpperCAmelCase (    self						,		_SCREAMING_SNAKE_CASE = None			):
								# make sure sample is on the same device as the parameters and has same dtype
								_UpperCAmelCase      =			randn_tensor(
								    self.mean.shape						,		generator=_SCREAMING_SNAKE_CASE						,		device=self.parameters.device						,		dtype=self.parameters.dtype			)
								_UpperCAmelCase      =			self.mean + self.std * sample
								return x






		def 				UpperCAmelCase (    self						,		_SCREAMING_SNAKE_CASE=None			):
								if self.deterministic:
														return torch.Tensor([0.0]			)
								else:
														if other is None:
																				return 0.5 * torch.sum(torch.pow(self.mean						,		2			) + self.var - 1.0 - self.logvar						,		dim=[1, 2, 3]			)
														else:
																				return 0.5 * torch.sum(
																				    torch.pow(self.mean - other.mean						,		2			) / other.var
																				    + self.var / other.var
																				    - 1.0
																				    - self.logvar
																				    + other.logvar						,		dim=[1, 2, 3]						,		)






		def 				UpperCAmelCase (    self						,		_SCREAMING_SNAKE_CASE						,		_SCREAMING_SNAKE_CASE=[1, 2, 3]			):
								if self.deterministic:
														return torch.Tensor([0.0]			)
								_UpperCAmelCase      =			np.log(2.0 * np.pi			)
								return 0.5 * torch.sum(logtwopi + self.logvar + torch.pow(sample - self.mean						,		2			) / self.var						,		dim=_SCREAMING_SNAKE_CASE			)






		def 				UpperCAmelCase (    self			):
								return self.mean