






"""simple docstring"""



import inspect
import unittest

from transformers import ViTMSNConfig
from transformers.testing_utils import require_torch, require_vision, slow, torch_device
from transformers.utils import cached_property, is_torch_available, is_vision_available

from ...test_configuration_common import ConfigTester
from ...test_modeling_common import ModelTesterMixin, floats_tensor, ids_tensor
from ...test_pipeline_mixin import PipelineTesterMixin


if is_torch_available():
    import torch
    from torch import nn

    from transformers import ViTMSNForImageClassification, ViTMSNModel
    from transformers.models.vit_msn.modeling_vit_msn import VIT_MSN_PRETRAINED_MODEL_ARCHIVE_LIST


if is_vision_available():
    from PIL import Image

    from transformers import ViTImageProcessor

class        a     :







    def __init__(			self							,		_lowerCamelCase							,		_lowerCamelCase=1_3							,		_lowerCamelCase=3_0							,		_lowerCamelCase=2							,		_lowerCamelCase=3							,		_lowerCamelCase=True							,		_lowerCamelCase=True							,		_lowerCamelCase=3_2							,		_lowerCamelCase=5							,		_lowerCamelCase=4							,		_lowerCamelCase=3_7							,		_lowerCamelCase="gelu"							,		_lowerCamelCase=0.1							,		_lowerCamelCase=0.1							,		_lowerCamelCase=1_0							,		_lowerCamelCase=0.0_2							,		_lowerCamelCase=None							,		):
      lowercase							    =       parent
      lowercase							    =       batch_size
      lowercase							    =       image_size
      lowercase							    =       patch_size
      lowercase							    =       num_channels
      lowercase							    =       is_training
      lowercase							    =       use_labels
      lowercase							    =       hidden_size
      lowercase							    =       num_hidden_layers
      lowercase							    =       num_attention_heads
      lowercase							    =       intermediate_size
      lowercase							    =       hidden_act
      lowercase							    =       hidden_dropout_prob
      lowercase							    =       attention_probs_dropout_prob
      lowercase							    =       type_sequence_label_size
      lowercase							    =       initializer_range
      lowercase							    =       scope

      # in ViT MSN, the seq length equals the number of patches + 1 (we add 1 for the [CLS] token)
      lowercase							    =       (image_size // patch_size) ** 2
      lowercase							    =       num_patches + 1







    def 			UpperCamelCase_      (			self       ):
      lowercase							    =       floats_tensor([self.batch_size, self.num_channels, self.image_size, self.image_size]       )

      lowercase							    =       None
      if self.use_labels:
        lowercase							    =       ids_tensor([self.batch_size]							,		self.type_sequence_label_size       )

      lowercase							    =       self.get_config()

      return config, pixel_values, labels







    def 			UpperCamelCase_      (			self       ):
      return ViTMSNConfig(
          image_size=self.image_size							,		patch_size=self.patch_size							,		num_channels=self.num_channels							,		hidden_size=self.hidden_size							,		num_hidden_layers=self.num_hidden_layers							,		num_attention_heads=self.num_attention_heads							,		intermediate_size=self.intermediate_size							,		hidden_act=self.hidden_act							,		hidden_dropout_prob=self.hidden_dropout_prob							,		attention_probs_dropout_prob=self.attention_probs_dropout_prob							,		initializer_range=self.initializer_range							,		)







    def 			UpperCamelCase_      (			self							,		_lowerCamelCase							,		_lowerCamelCase							,		_lowerCamelCase       ):
      lowercase							    =       ViTMSNModel(config=lowerCAmelCase__       )
      model.to(lowerCAmelCase__       )
      model.eval()
      lowercase							    =       model(lowerCAmelCase__       )
      self.parent.assertEqual(result.last_hidden_state.shape							,		(self.batch_size, self.seq_length, self.hidden_size)       )







    def 			UpperCamelCase_      (			self							,		_lowerCamelCase							,		_lowerCamelCase							,		_lowerCamelCase       ):
      lowercase							    =       self.type_sequence_label_size
      lowercase							    =       ViTMSNForImageClassification(lowerCAmelCase__       )
      model.to(lowerCAmelCase__       )
      model.eval()
      lowercase							    =       model(lowerCAmelCase__							,		labels=lowerCAmelCase__       )
      print('Pixel and labels shape: {pixel_values.shape}, {labels.shape}'       )
      print('Labels: {labels}'       )
      self.parent.assertEqual(result.logits.shape							,		(self.batch_size, self.type_sequence_label_size)       )

      # test greyscale images
      lowercase							    =       1
      lowercase							    =       ViTMSNForImageClassification(lowerCAmelCase__       )
      model.to(lowerCAmelCase__       )
      model.eval()

      lowercase							    =       floats_tensor([self.batch_size, 1, self.image_size, self.image_size]       )
      lowercase							    =       model(lowerCAmelCase__       )
      self.parent.assertEqual(result.logits.shape							,		(self.batch_size, self.type_sequence_label_size)       )







    def 			UpperCamelCase_      (			self       ):
      lowercase							    =       self.prepare_config_and_inputs()
      lowercase    ,     lowercase    ,     lowercase							    =       config_and_inputs
      lowercase							    =       {'pixel_values': pixel_values}
      return config, inputs_dict


@require_torch
class        a     (   lowerCamelCase_,				lowerCamelCase_,				unittest.TestCase	):
    UpperCAmelCase_ :     int	     =(ViTMSNModel, ViTMSNForImageClassification) if is_torch_available() else ()
    UpperCAmelCase_ :     Any	     =(
        {"""feature-extraction""": ViTMSNModel, """image-classification""": ViTMSNForImageClassification}
        if is_torch_available()
        else {}
    )

    UpperCAmelCase_ :     Dict	     =False
    UpperCAmelCase_ :     Dict	     =False
    UpperCAmelCase_ :     List[Any]	     =False
    UpperCAmelCase_ :     List[str]	     =False







    def 			UpperCamelCase_      (			self       ):
      lowercase							    =       ViTMSNModelTester(self       )
      lowercase							    =       ConfigTester(self							,		config_class=lowerCAmelCase__							,		has_text_modality=lowerCAmelCase__							,		hidden_size=3_7       )







    def 			UpperCamelCase_      (			self       ):
      self.config_tester.run_common_tests()







    @unittest.skip(reason='ViTMSN does not use inputs_embeds'       )
    def 			UpperCamelCase_      (			self       ):
      pass







    def 			UpperCamelCase_      (			self       ):
      lowercase    ,     lowercase							    =       self.model_tester.prepare_config_and_inputs_for_common()

      for model_class in self.all_model_classes:
        lowercase							    =       model_class(lowerCAmelCase__       )
        self.assertIsInstance(model.get_input_embeddings()							,		(nn.Module)       )
        lowercase							    =       model.get_output_embeddings()
        self.assertTrue(x is None or isinstance(lowerCAmelCase__							,		nn.Linear       )       )







    def 			UpperCamelCase_      (			self       ):
      lowercase    ,     lowercase							    =       self.model_tester.prepare_config_and_inputs_for_common()

      for model_class in self.all_model_classes:
        lowercase							    =       model_class(lowerCAmelCase__       )
        lowercase							    =       inspect.signature(model.forward       )
        # signature.parameters is an OrderedDict => so arg_names order is deterministic
        lowercase							    =       [*signature.parameters.keys()]

        lowercase							    =       ['pixel_values']
        self.assertListEqual(arg_names[:1]							,		lowerCAmelCase__       )







    def 			UpperCamelCase_      (			self       ):
      lowercase							    =       self.model_tester.prepare_config_and_inputs()
      self.model_tester.create_and_check_model(*lowerCAmelCase__       )







    def 			UpperCamelCase_      (			self       ):
      lowercase							    =       self.model_tester.prepare_config_and_inputs()
      self.model_tester.create_and_check_for_image_classification(*lowerCAmelCase__       )







    @slow
    def 			UpperCamelCase_      (			self       ):
      for model_name in VIT_MSN_PRETRAINED_MODEL_ARCHIVE_LIST[:1]:
        lowercase							    =       ViTMSNModel.from_pretrained(lowerCAmelCase__       )
        self.assertIsNotNone(lowerCAmelCase__       )


def 						_SCREAMING_SNAKE_CASE (    ):





  '''simple docstring'''





  lowercase							    =       Image.open('./tests/fixtures/tests_samples/COCO/000000039769.png'    )
  return image



@require_torch
@require_vision
class        a     (   unittest.TestCase	):







    @cached_property
    def 			UpperCamelCase_      (			self       ):
      return ViTImageProcessor.from_pretrained('facebook/vit-msn-small'       ) if is_vision_available() else None







    @slow
    def 			UpperCamelCase_      (			self       ):
      torch.manual_seed(2       )
      lowercase							    =       ViTMSNForImageClassification.from_pretrained('facebook/vit-msn-small'       ).to(lowerCAmelCase__       )

      lowercase							    =       self.default_image_processor
      lowercase							    =       prepare_img()
      lowercase							    =       image_processor(images=lowerCAmelCase__							,		return_tensors='pt'       ).to(lowerCAmelCase__       )

      # forward pass
      with torch.no_grad():
        lowercase							    =       model(**lowerCAmelCase__       )

      # verify the logits
      lowercase							    =       torch.Size((1, 1_0_0_0)       )
      self.assertEqual(outputs.logits.shape							,		lowerCAmelCase__       )

      lowercase							    =       torch.tensor([-0.0_8_0_3, -0.4_4_5_4, -0.2_3_7_5]       ).to(lowerCAmelCase__       )

      self.assertTrue(torch.allclose(outputs.logits[0, :3]							,		lowerCAmelCase__							,		atol=1e-4       )       )






"""simple docstring"""




from typing import List, Optional, Tuple, Union

import torch
from torch import nn
from torch.nn import CrossEntropyLoss

from ... import AutoBackbone
from ...modeling_outputs import SemanticSegmenterOutput
from ...modeling_utils import PreTrainedModel
from ...utils import add_start_docstrings, add_start_docstrings_to_model_forward, replace_return_docstrings
from ...utils.backbone_utils import BackboneMixin
from .configuration_upernet import UperNetConfig


__UpperCamelCase						=      [
    '''openmmlab/upernet-convnext-tiny''',
    # See all UperNet models at https://huggingface.co/models?filter=upernet
]

# General docstring
__UpperCamelCase						=      '''UperNetConfig'''
class 					lowerCAmelCase	(					nn.Module    ):




		'''simple docstring'''







		def __init__(	self						,       lowerCAmelCase__						,       lowerCAmelCase__						,       lowerCAmelCase__						,       lowerCAmelCase__ = 0						,       lowerCAmelCase__ = False						,       lowerCAmelCase__ = 1						,       )     ->							None:
								super().__init__()
								SCREAMING_SNAKE_CASE													=					nn.Convad(
								    in_channels=lowerCAmelCase__						,       out_channels=lowerCAmelCase__						,       kernel_size=lowerCAmelCase__						,       padding=lowerCAmelCase__						,       bias=lowerCAmelCase__						,       dilation=lowerCAmelCase__						,       )
								SCREAMING_SNAKE_CASE													=					nn.BatchNormad(lowerCAmelCase__				)
								SCREAMING_SNAKE_CASE													=					nn.ReLU()







		def 							__A						(	self						,       lowerCAmelCase__				)     ->							torch.Tensor:
								SCREAMING_SNAKE_CASE													=					self.conv(lowerCAmelCase__				)
								SCREAMING_SNAKE_CASE													=					self.batch_norm(lowerCAmelCase__				)
								SCREAMING_SNAKE_CASE													=					self.activation(lowerCAmelCase__				)

								return output





class 					lowerCAmelCase	(					nn.Module    ):




		'''simple docstring'''







		def __init__(	self						,       lowerCAmelCase__						,       lowerCAmelCase__						,       lowerCAmelCase__				)     ->							None:
								super().__init__()
								SCREAMING_SNAKE_CASE													=					[
								    nn.AdaptiveAvgPoolad(lowerCAmelCase__				),
								    UperNetConvModule(lowerCAmelCase__						,       lowerCAmelCase__						,       kernel_size=1				),
								]
								for i, layer in enumerate(self.layers				):
														self.add_module(str(lowerCAmelCase__				)						,       lowerCAmelCase__				)







		def 							__A						(	self						,       lowerCAmelCase__				)     ->							torch.Tensor:
								SCREAMING_SNAKE_CASE													=					input
								for layer in self.layers:
														SCREAMING_SNAKE_CASE													=					layer(lowerCAmelCase__				)
								return hidden_state





class 					lowerCAmelCase	(					nn.Module    ):




		'''simple docstring'''







		def __init__(	self						,       lowerCAmelCase__						,       lowerCAmelCase__						,       lowerCAmelCase__						,       lowerCAmelCase__				)     ->							None:
								super().__init__()
								SCREAMING_SNAKE_CASE													=					pool_scales
								SCREAMING_SNAKE_CASE													=					align_corners
								SCREAMING_SNAKE_CASE													=					in_channels
								SCREAMING_SNAKE_CASE													=					channels
								SCREAMING_SNAKE_CASE													=					[]
								for i, pool_scale in enumerate(lowerCAmelCase__				):
														SCREAMING_SNAKE_CASE													=					UperNetPyramidPoolingBlock(pool_scale=lowerCAmelCase__						,       in_channels=lowerCAmelCase__						,       channels=lowerCAmelCase__				)
														self.blocks.append(lowerCAmelCase__				)
														self.add_module(str(lowerCAmelCase__				)						,       lowerCAmelCase__				)







		def 							__A						(	self						,       lowerCAmelCase__				)     ->							List[torch.Tensor]:
								SCREAMING_SNAKE_CASE													=					[]
								for ppm in self.blocks:
														SCREAMING_SNAKE_CASE													=					ppm(lowerCAmelCase__				)
														SCREAMING_SNAKE_CASE													=					nn.functional.interpolate(
														    lowerCAmelCase__						,       size=x.size()[2:]						,       mode='bilinear'						,       align_corners=self.align_corners				)
														ppm_outs.append(lowerCAmelCase__				)
								return ppm_outs





class 					lowerCAmelCase	(					nn.Module    ):




		'''simple docstring'''







		def __init__(	self						,       lowerCAmelCase__						,       lowerCAmelCase__				)     ->							List[str]:
								super().__init__()

								SCREAMING_SNAKE_CASE													=					config
								SCREAMING_SNAKE_CASE													=					config.pool_scales  # e.g. (1, 2, 3, 6)
								SCREAMING_SNAKE_CASE													=					in_channels
								SCREAMING_SNAKE_CASE													=					config.hidden_size
								SCREAMING_SNAKE_CASE													=					False
								SCREAMING_SNAKE_CASE													=					nn.Convad(self.channels						,       config.num_labels						,       kernel_size=1				)

								# PSP Module
								SCREAMING_SNAKE_CASE													=					UperNetPyramidPoolingModule(
								    self.pool_scales						,       self.in_channels[-1]						,       self.channels						,       align_corners=self.align_corners						,       )
								SCREAMING_SNAKE_CASE													=					UperNetConvModule(
								    self.in_channels[-1] + len(self.pool_scales				) * self.channels						,       self.channels						,       kernel_size=3						,       padding=1						,       )
								# FPN Module
								SCREAMING_SNAKE_CASE													=					nn.ModuleList()
								SCREAMING_SNAKE_CASE													=					nn.ModuleList()
								for in_channels in self.in_channels[:-1]:  # skip the top layer
														SCREAMING_SNAKE_CASE													=					UperNetConvModule(lowerCAmelCase__						,       self.channels						,       kernel_size=1				)
														SCREAMING_SNAKE_CASE													=					UperNetConvModule(self.channels						,       self.channels						,       kernel_size=3						,       padding=1				)
														self.lateral_convs.append(lowerCAmelCase__				)
														self.fpn_convs.append(lowerCAmelCase__				)

								SCREAMING_SNAKE_CASE													=					UperNetConvModule(
								    len(self.in_channels				) * self.channels						,       self.channels						,       kernel_size=3						,       padding=1						,       )







		def 							__A						(	self				)     ->							int:
								self.apply(self._init_weights				)







		def 							__A						(	self						,       lowerCAmelCase__				)     ->							Tuple:
								if isinstance(lowerCAmelCase__						,       nn.Convad				):
														module.weight.data.normal_(mean=0.0						,       std=self.config.initializer_range				)
														if module.bias is not None:
																				module.bias.data.zero_()







		def 							__A						(	self						,       lowerCAmelCase__				)     ->							Optional[int]:
								SCREAMING_SNAKE_CASE													=					inputs[-1]
								SCREAMING_SNAKE_CASE													=					[x]
								psp_outs.extend(self.psp_modules(lowerCAmelCase__				)				)
								SCREAMING_SNAKE_CASE													=					torch.cat(lowerCAmelCase__						,       dim=1				)
								SCREAMING_SNAKE_CASE													=					self.bottleneck(lowerCAmelCase__				)

								return output







		def 							__A						(	self						,       lowerCAmelCase__				)     ->							torch.Tensor:
								# build laterals
								SCREAMING_SNAKE_CASE													=					[lateral_conv(encoder_hidden_states[i]				) for i, lateral_conv in enumerate(self.lateral_convs				)]

								laterals.append(self.psp_forward(lowerCAmelCase__				)				)

								# build top-down path
								SCREAMING_SNAKE_CASE													=					len(lowerCAmelCase__				)
								for i in range(used_backbone_levels - 1						,       0						,       -1				):
														SCREAMING_SNAKE_CASE													=					laterals[i - 1].shape[2:]
														SCREAMING_SNAKE_CASE													=					laterals[i - 1] + nn.functional.interpolate(
														    laterals[i]						,       size=lowerCAmelCase__						,       mode='bilinear'						,       align_corners=self.align_corners				)

								# build outputs
								SCREAMING_SNAKE_CASE													=					[self.fpn_convs[i](laterals[i]				) for i in range(used_backbone_levels - 1				)]
								# append psp feature
								fpn_outs.append(laterals[-1]				)

								for i in range(used_backbone_levels - 1						,       0						,       -1				):
														SCREAMING_SNAKE_CASE													=					nn.functional.interpolate(
														    fpn_outs[i]						,       size=fpn_outs[0].shape[2:]						,       mode='bilinear'						,       align_corners=self.align_corners				)
								SCREAMING_SNAKE_CASE													=					torch.cat(lowerCAmelCase__						,       dim=1				)
								SCREAMING_SNAKE_CASE													=					self.fpn_bottleneck(lowerCAmelCase__				)
								SCREAMING_SNAKE_CASE													=					self.classifier(lowerCAmelCase__				)

								return output





class 					lowerCAmelCase	(					nn.Module    ):




		'''simple docstring'''







		def __init__(	self						,       lowerCAmelCase__						,       lowerCAmelCase__ = 2						,       lowerCAmelCase__ = 3						,       lowerCAmelCase__ = 1				)     ->							None:
								super().__init__()

								SCREAMING_SNAKE_CASE													=					config
								SCREAMING_SNAKE_CASE													=					config.auxiliary_in_channels
								SCREAMING_SNAKE_CASE													=					config.auxiliary_channels
								SCREAMING_SNAKE_CASE													=					config.auxiliary_num_convs
								SCREAMING_SNAKE_CASE													=					config.auxiliary_concat_input
								SCREAMING_SNAKE_CASE													=					in_index

								SCREAMING_SNAKE_CASE													=					(kernel_size // 2) * dilation
								SCREAMING_SNAKE_CASE													=					[]
								convs.append(
								    UperNetConvModule(
								        self.in_channels						,       self.channels						,       kernel_size=lowerCAmelCase__						,       padding=lowerCAmelCase__						,       dilation=lowerCAmelCase__				)				)
								for i in range(self.num_convs - 1				):
														convs.append(
														    UperNetConvModule(
														        self.channels						,       self.channels						,       kernel_size=lowerCAmelCase__						,       padding=lowerCAmelCase__						,       dilation=lowerCAmelCase__				)				)
								if self.num_convs == 0:
														SCREAMING_SNAKE_CASE													=					nn.Identity()
								else:
														SCREAMING_SNAKE_CASE													=					nn.Sequential(*lowerCAmelCase__				)
								if self.concat_input:
														SCREAMING_SNAKE_CASE													=					UperNetConvModule(
														    self.in_channels + self.channels						,       self.channels						,       kernel_size=lowerCAmelCase__						,       padding=kernel_size // 2				)

								SCREAMING_SNAKE_CASE													=					nn.Convad(self.channels						,       config.num_labels						,       kernel_size=1				)







		def 							__A						(	self				)     ->							Dict:
								self.apply(self._init_weights				)







		def 							__A						(	self						,       lowerCAmelCase__				)     ->							Dict:
								if isinstance(lowerCAmelCase__						,       nn.Convad				):
														module.weight.data.normal_(mean=0.0						,       std=self.config.initializer_range				)
														if module.bias is not None:
																				module.bias.data.zero_()







		def 							__A						(	self						,       lowerCAmelCase__				)     ->							torch.Tensor:
								# just take the relevant feature maps
								SCREAMING_SNAKE_CASE													=					encoder_hidden_states[self.in_index]
								SCREAMING_SNAKE_CASE													=					self.convs(lowerCAmelCase__				)
								if self.concat_input:
														SCREAMING_SNAKE_CASE													=					self.conv_cat(torch.cat([hidden_states, output]						,       dim=1				)				)
								SCREAMING_SNAKE_CASE													=					self.classifier(lowerCAmelCase__				)
								return output





class 					lowerCAmelCase	(					lowerCamelCase_    ):




		'''simple docstring'''







		SCREAMING_SNAKE_CASE_						:     int								=     UperNetConfig
		SCREAMING_SNAKE_CASE_						:     Optional[Any]								=     """pixel_values"""
		SCREAMING_SNAKE_CASE_						:     Optional[int]								=     True







		def 							__A						(	self						,       lowerCAmelCase__				)     ->							List[str]:
								if isinstance(lowerCAmelCase__						,       lowerCAmelCase__				):
														module.backbone.init_weights()
														module.decode_head.init_weights()
														module.auxiliary_head.init_weights()







		def 							__A						(	self				)     ->							int:
								self.backbone.init_weights()
								self.decode_head.init_weights()
								self.auxiliary_head.init_weights()







		def 							__A						(	self						,       lowerCAmelCase__						,       lowerCAmelCase__=False				)     ->							str:
								if isinstance(lowerCAmelCase__						,       lowerCAmelCase__				):
														SCREAMING_SNAKE_CASE													=					value





__UpperCamelCase						=      R'''
    Parameters:
    This model is a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) sub-class. Use
    it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and
    behavior.
        config ([`UperNetConfig`]): Model configuration class with all the parameters of the model.
            Initializing with a config file does not load the weights associated with the model, only the
            configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights.
'''

__UpperCamelCase						=      R'''
    Args:
        pixel_values (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`):
            Pixel values. Padding will be ignored by default should you provide it. Pixel values can be obtained using
            [`AutoImageProcessor`]. See [`SegformerImageProcessor.__call__`] for details.
        output_attentions (`bool`, *optional*):
            Whether or not to return the attentions tensors of all attention layers in case the backbone has them. See
            `attentions` under returned tensors for more detail.
        output_hidden_states (`bool`, *optional*):
            Whether or not to return the hidden states of all layers of the backbone. See `hidden_states` under
            returned tensors for more detail.
        return_dict (`bool`, *optional*):
            Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple.
'''
@add_start_docstrings(
    """UperNet framework leveraging any vision backbone e.g. for ADE20k, CityScapes."""	,    lowerCamelCase_	,    )
class 					lowerCAmelCase	(					lowerCamelCase_    ):




		'''simple docstring'''







		def __init__(	self						,       lowerCAmelCase__				)     ->							Optional[int]:
								super().__init__(lowerCAmelCase__				)

								SCREAMING_SNAKE_CASE													=					AutoBackbone.from_config(config.backbone_config				)

								# Semantic segmentation head(s)
								SCREAMING_SNAKE_CASE													=					UperNetHead(lowerCAmelCase__						,       in_channels=self.backbone.channels				)
								SCREAMING_SNAKE_CASE													=					UperNetFCNHead(lowerCAmelCase__				) if config.use_auxiliary_head else None

								# Initialize weights and apply final processing
								self.post_init()







		@add_start_docstrings_to_model_forward(UPERNET_INPUTS_DOCSTRING.format('batch_size, sequence_length'				)				)
		@replace_return_docstrings(output_type=lowerCAmelCase__						,       config_class=_CONFIG_FOR_DOC				)
		def 							__A						(	self						,       lowerCAmelCase__ = None						,       lowerCAmelCase__ = None						,       lowerCAmelCase__ = None						,       lowerCAmelCase__ = None						,       lowerCAmelCase__ = None						,       )     ->							Union[tuple, SemanticSegmenterOutput]:
								SCREAMING_SNAKE_CASE													=					return_dict if return_dict is not None else self.config.use_return_dict
								SCREAMING_SNAKE_CASE													=					(
								    output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
								)
								SCREAMING_SNAKE_CASE													=					output_attentions if output_attentions is not None else self.config.output_attentions

								SCREAMING_SNAKE_CASE													=					self.backbone.forward_with_filtered_kwargs(
								    lowerCAmelCase__						,       output_hidden_states=lowerCAmelCase__						,       output_attentions=lowerCAmelCase__				)
								SCREAMING_SNAKE_CASE													=					outputs.feature_maps

								SCREAMING_SNAKE_CASE													=					self.decode_head(lowerCAmelCase__				)
								SCREAMING_SNAKE_CASE													=					nn.functional.interpolate(lowerCAmelCase__						,       size=pixel_values.shape[2:]						,       mode='bilinear'						,       align_corners=lowerCAmelCase__				)

								SCREAMING_SNAKE_CASE													=					None
								if self.auxiliary_head is not None:
														SCREAMING_SNAKE_CASE													=					self.auxiliary_head(lowerCAmelCase__				)
														SCREAMING_SNAKE_CASE													=					nn.functional.interpolate(
														    lowerCAmelCase__						,       size=pixel_values.shape[2:]						,       mode='bilinear'						,       align_corners=lowerCAmelCase__				)

								SCREAMING_SNAKE_CASE													=					None
								if labels is not None:
														if self.config.num_labels == 1:
																				raise ValueError('The number of labels should be greater than one'				)
														else:
																				# compute weighted loss
																				SCREAMING_SNAKE_CASE													=					CrossEntropyLoss(ignore_index=self.config.loss_ignore_index				)
																				SCREAMING_SNAKE_CASE													=					loss_fct(lowerCAmelCase__						,       lowerCAmelCase__				)
																				SCREAMING_SNAKE_CASE													=					loss_fct(lowerCAmelCase__						,       lowerCAmelCase__				)
																				SCREAMING_SNAKE_CASE													=					main_loss + self.config.auxiliary_loss_weight * auxiliary_loss

								if not return_dict:
														if output_hidden_states:
																				SCREAMING_SNAKE_CASE													=					(logits,) + outputs[1:]
														else:
																				SCREAMING_SNAKE_CASE													=					(logits,) + outputs[2:]
														return ((loss,) + output) if loss is not None else output

								return SemanticSegmenterOutput(
								    loss=lowerCAmelCase__						,       logits=lowerCAmelCase__						,       hidden_states=outputs.hidden_states						,       attentions=outputs.attentions						,       )


