



"""simple docstring"""





from typing import List, Optional, Tuple, Union

import PIL
import torch
from torchvision import transforms

from diffusers.pipeline_utils import DiffusionPipeline, ImagePipelineOutput
from diffusers.schedulers import DDIMScheduler
from diffusers.utils import randn_tensor


lowercase  							=					transforms.Compose(
    [
        transforms.Resize((2_56, 2_56)),
        transforms.ToTensor(),
        transforms.Normalize([0.5], [0.5]),
    ]
)




def 	UpperCAmelCase     (		A	:						Optional[Any]       ):

		'''simple docstring'''


		if isinstance(A     ,				torch.Tensor       ):
				return image
		elif isinstance(A     ,				PIL.Image.Image       ):
				_UpperCAmelCase							 =		[image]

		_UpperCAmelCase							 =		[trans(img.convert('RGB'       )       ) for img in image]
		_UpperCAmelCase							 =		torch.stack(A       )
		return image






class 			lowercase__			(      A    ):
							'''simple docstring'''







							def __init__(  self	,       snake_case	,       snake_case						)			->							List[Any]:
									super().__init__()

									# make sure scheduler can always be converted to DDIM
									_UpperCAmelCase							 =		DDIMScheduler.from_config(scheduler.config						)

									self.register_modules(unet=snake_case	,       scheduler=snake_case						)






							def        lowerCamelCase_   (  self	,       snake_case						)			->							Optional[Any]:
									if strength < 0 or strength > 1:
											raise ValueError(f'The value of strength should in [0.0, 1.0] but is {strength}'						)






							def        lowerCamelCase_   (  self	,       snake_case	,       snake_case	,       snake_case						)			->							str:
									# get the original timestep using init_timestep
									_UpperCAmelCase							 =		min(int(num_inference_steps * strength						)	,       snake_case						)

									_UpperCAmelCase							 =		max(num_inference_steps - init_timestep	,       0						)
									_UpperCAmelCase							 =		self.scheduler.timesteps[t_start:]

									return timesteps, num_inference_steps - t_start






							def        lowerCamelCase_   (  self	,       snake_case	,       snake_case	,       snake_case	,       snake_case	,       snake_case	,       snake_case=None						)			->							List[str]:
									if not isinstance(snake_case	,       (torch.Tensor, PIL.Image.Image, list)						):
											raise ValueError(
											    f'`image` has to be of type `torch.Tensor`, `PIL.Image.Image` or list but is {type(snake_case						)}'						)

									_UpperCAmelCase							 =		image.to(device=snake_case	,       dtype=snake_case						)

									if isinstance(snake_case	,       snake_case						) and len(snake_case						) != batch_size:
											raise ValueError(
											    f'You have passed a list of generators of length {len(snake_case						)}, but requested an effective batch'
											    f' size of {batch_size}. Make sure the batch size matches the length of the generators.'						)

									_UpperCAmelCase							 =		init_latents.shape
									_UpperCAmelCase							 =		randn_tensor(snake_case	,       generator=snake_case	,       device=snake_case	,       dtype=snake_case						)

									# get latents
									print('add noise to latents at timestep'	,       snake_case						)
									_UpperCAmelCase							 =		self.scheduler.add_noise(snake_case	,       snake_case	,       snake_case						)
									_UpperCAmelCase							 =		init_latents

									return latents






							@torch.no_grad()
							def __call__(  self	,       snake_case = None	,       snake_case = 0.8	,       snake_case = 1	,       snake_case = None	,       snake_case = 0.0	,       snake_case = 50	,       snake_case = None	,       snake_case = "pil"	,       snake_case = True	,       )			->							Union[ImagePipelineOutput, Tuple]:
									self.check_inputs(snake_case						)

									# 2. Preprocess image
									_UpperCAmelCase							 =		preprocess(snake_case						)

									# 3. set timesteps
									self.scheduler.set_timesteps(snake_case	,       device=self.device						)
									_UpperCAmelCase ,					_UpperCAmelCase							 =		self.get_timesteps(snake_case	,       snake_case	,       self.device						)
									_UpperCAmelCase							 =		timesteps[:1].repeat(snake_case						)

									# 4. Prepare latent variables
									_UpperCAmelCase							 =		self.prepare_latents(snake_case	,       snake_case	,       snake_case	,       self.unet.dtype	,       self.device	,       snake_case						)
									_UpperCAmelCase							 =		latents

									# 5. Denoising loop
									for t in self.progress_bar(snake_case						):
											# 1. predict noise model_output
											_UpperCAmelCase							 =		self.unet(snake_case	,       snake_case						).sample

											# 2. predict previous mean of image x_t-1 and add variance depending on eta
											# eta corresponds to η in paper and should be between [0, 1]
											# do x_t -> x_t-1
											_UpperCAmelCase							 =		self.scheduler.step(
											    snake_case	,       snake_case	,       snake_case	,       eta=snake_case	,       use_clipped_model_output=snake_case	,       generator=snake_case	,       ).prev_sample

									_UpperCAmelCase							 =		(image / 2 + 0.5).clamp(0	,       1						)
									_UpperCAmelCase							 =		image.cpu().permute(0	,       2	,       3	,       1						).numpy()
									if output_type == "pil":
											_UpperCAmelCase							 =		self.numpy_to_pil(snake_case						)

									if not return_dict:
											return (image, latent_timestep.item())

									return ImagePipelineOutput(images=snake_case						)







"""simple docstring"""





import unittest

import numpy as np

from transformers.testing_utils import require_flax, require_tf, require_torch
from transformers.utils import (
    expand_dims,
    flatten_dict,
    is_flax_available,
    is_tf_available,
    is_torch_available,
    reshape,
    squeeze,
    transpose,
)


if is_flax_available():
					import jax.numpy as jnp

if is_tf_available():
					import tensorflow as tf

if is_torch_available():
					import torch




class 			lowercase__			(      unittest.TestCase    ):
							'''simple docstring'''







							def        lowerCamelCase_   (  self						)			->							Dict:
									_UpperCAmelCase							 =		{
									    'task_specific_params': {
									        'summarization': {'length_penalty': 1.0, 'max_length': 128, 'min_length': 12, 'num_beams': 4},
									        'summarization_cnn': {'length_penalty': 2.0, 'max_length': 142, 'min_length': 56, 'num_beams': 4},
									        'summarization_xsum': {'length_penalty': 1.0, 'max_length': 62, 'min_length': 11, 'num_beams': 6},
									    }
									}
									_UpperCAmelCase							 =		{
									    'task_specific_params.summarization.length_penalty': 1.0,
									    'task_specific_params.summarization.max_length': 128,
									    'task_specific_params.summarization.min_length': 12,
									    'task_specific_params.summarization.num_beams': 4,
									    'task_specific_params.summarization_cnn.length_penalty': 2.0,
									    'task_specific_params.summarization_cnn.max_length': 142,
									    'task_specific_params.summarization_cnn.min_length': 56,
									    'task_specific_params.summarization_cnn.num_beams': 4,
									    'task_specific_params.summarization_xsum.length_penalty': 1.0,
									    'task_specific_params.summarization_xsum.max_length': 62,
									    'task_specific_params.summarization_xsum.min_length': 11,
									    'task_specific_params.summarization_xsum.num_beams': 6,
									}

									self.assertEqual(flatten_dict(snake_case						)	,       snake_case						)






							def        lowerCamelCase_   (  self						)			->							List[str]:
									_UpperCAmelCase							 =		np.random.randn(3	,       4						)
									self.assertTrue(np.allclose(transpose(snake_case						)	,       x.transpose()						)						)

									_UpperCAmelCase							 =		np.random.randn(3	,       4	,       5						)
									self.assertTrue(np.allclose(transpose(snake_case	,       axes=(1, 2, 0)						)	,       x.transpose((1, 2, 0)						)						)						)






							@require_torch
							def        lowerCamelCase_   (  self						)			->							List[str]:
									_UpperCAmelCase							 =		np.random.randn(3	,       4						)
									_UpperCAmelCase							 =		torch.tensor(snake_case						)
									self.assertTrue(np.allclose(transpose(snake_case						)	,       transpose(snake_case						).numpy()						)						)

									_UpperCAmelCase							 =		np.random.randn(3	,       4	,       5						)
									_UpperCAmelCase							 =		torch.tensor(snake_case						)
									self.assertTrue(np.allclose(transpose(snake_case	,       axes=(1, 2, 0)						)	,       transpose(snake_case	,       axes=(1, 2, 0)						).numpy()						)						)






							@require_tf
							def        lowerCamelCase_   (  self						)			->							Union[str, Any]:
									_UpperCAmelCase							 =		np.random.randn(3	,       4						)
									_UpperCAmelCase							 =		tf.constant(snake_case						)
									self.assertTrue(np.allclose(transpose(snake_case						)	,       transpose(snake_case						).numpy()						)						)

									_UpperCAmelCase							 =		np.random.randn(3	,       4	,       5						)
									_UpperCAmelCase							 =		tf.constant(snake_case						)
									self.assertTrue(np.allclose(transpose(snake_case	,       axes=(1, 2, 0)						)	,       transpose(snake_case	,       axes=(1, 2, 0)						).numpy()						)						)






							@require_flax
							def        lowerCamelCase_   (  self						)			->							Union[str, Any]:
									_UpperCAmelCase							 =		np.random.randn(3	,       4						)
									_UpperCAmelCase							 =		jnp.array(snake_case						)
									self.assertTrue(np.allclose(transpose(snake_case						)	,       np.asarray(transpose(snake_case						)						)						)						)

									_UpperCAmelCase							 =		np.random.randn(3	,       4	,       5						)
									_UpperCAmelCase							 =		jnp.array(snake_case						)
									self.assertTrue(np.allclose(transpose(snake_case	,       axes=(1, 2, 0)						)	,       np.asarray(transpose(snake_case	,       axes=(1, 2, 0)						)						)						)						)






							def        lowerCamelCase_   (  self						)			->							List[str]:
									_UpperCAmelCase							 =		np.random.randn(3	,       4						)
									self.assertTrue(np.allclose(reshape(snake_case	,       (4, 3)						)	,       np.reshape(snake_case	,       (4, 3)						)						)						)

									_UpperCAmelCase							 =		np.random.randn(3	,       4	,       5						)
									self.assertTrue(np.allclose(reshape(snake_case	,       (12, 5)						)	,       np.reshape(snake_case	,       (12, 5)						)						)						)






							@require_torch
							def        lowerCamelCase_   (  self						)			->							Optional[Any]:
									_UpperCAmelCase							 =		np.random.randn(3	,       4						)
									_UpperCAmelCase							 =		torch.tensor(snake_case						)
									self.assertTrue(np.allclose(reshape(snake_case	,       (4, 3)						)	,       reshape(snake_case	,       (4, 3)						).numpy()						)						)

									_UpperCAmelCase							 =		np.random.randn(3	,       4	,       5						)
									_UpperCAmelCase							 =		torch.tensor(snake_case						)
									self.assertTrue(np.allclose(reshape(snake_case	,       (12, 5)						)	,       reshape(snake_case	,       (12, 5)						).numpy()						)						)






							@require_tf
							def        lowerCamelCase_   (  self						)			->							Union[str, Any]:
									_UpperCAmelCase							 =		np.random.randn(3	,       4						)
									_UpperCAmelCase							 =		tf.constant(snake_case						)
									self.assertTrue(np.allclose(reshape(snake_case	,       (4, 3)						)	,       reshape(snake_case	,       (4, 3)						).numpy()						)						)

									_UpperCAmelCase							 =		np.random.randn(3	,       4	,       5						)
									_UpperCAmelCase							 =		tf.constant(snake_case						)
									self.assertTrue(np.allclose(reshape(snake_case	,       (12, 5)						)	,       reshape(snake_case	,       (12, 5)						).numpy()						)						)






							@require_flax
							def        lowerCamelCase_   (  self						)			->							Tuple:
									_UpperCAmelCase							 =		np.random.randn(3	,       4						)
									_UpperCAmelCase							 =		jnp.array(snake_case						)
									self.assertTrue(np.allclose(reshape(snake_case	,       (4, 3)						)	,       np.asarray(reshape(snake_case	,       (4, 3)						)						)						)						)

									_UpperCAmelCase							 =		np.random.randn(3	,       4	,       5						)
									_UpperCAmelCase							 =		jnp.array(snake_case						)
									self.assertTrue(np.allclose(reshape(snake_case	,       (12, 5)						)	,       np.asarray(reshape(snake_case	,       (12, 5)						)						)						)						)






							def        lowerCamelCase_   (  self						)			->							str:
									_UpperCAmelCase							 =		np.random.randn(1	,       3	,       4						)
									self.assertTrue(np.allclose(squeeze(snake_case						)	,       np.squeeze(snake_case						)						)						)

									_UpperCAmelCase							 =		np.random.randn(1	,       4	,       1	,       5						)
									self.assertTrue(np.allclose(squeeze(snake_case	,       axis=2						)	,       np.squeeze(snake_case	,       axis=2						)						)						)






							@require_torch
							def        lowerCamelCase_   (  self						)			->							Union[str, Any]:
									_UpperCAmelCase							 =		np.random.randn(1	,       3	,       4						)
									_UpperCAmelCase							 =		torch.tensor(snake_case						)
									self.assertTrue(np.allclose(squeeze(snake_case						)	,       squeeze(snake_case						).numpy()						)						)

									_UpperCAmelCase							 =		np.random.randn(1	,       4	,       1	,       5						)
									_UpperCAmelCase							 =		torch.tensor(snake_case						)
									self.assertTrue(np.allclose(squeeze(snake_case	,       axis=2						)	,       squeeze(snake_case	,       axis=2						).numpy()						)						)






							@require_tf
							def        lowerCamelCase_   (  self						)			->							Optional[int]:
									_UpperCAmelCase							 =		np.random.randn(1	,       3	,       4						)
									_UpperCAmelCase							 =		tf.constant(snake_case						)
									self.assertTrue(np.allclose(squeeze(snake_case						)	,       squeeze(snake_case						).numpy()						)						)

									_UpperCAmelCase							 =		np.random.randn(1	,       4	,       1	,       5						)
									_UpperCAmelCase							 =		tf.constant(snake_case						)
									self.assertTrue(np.allclose(squeeze(snake_case	,       axis=2						)	,       squeeze(snake_case	,       axis=2						).numpy()						)						)






							@require_flax
							def        lowerCamelCase_   (  self						)			->							str:
									_UpperCAmelCase							 =		np.random.randn(1	,       3	,       4						)
									_UpperCAmelCase							 =		jnp.array(snake_case						)
									self.assertTrue(np.allclose(squeeze(snake_case						)	,       np.asarray(squeeze(snake_case						)						)						)						)

									_UpperCAmelCase							 =		np.random.randn(1	,       4	,       1	,       5						)
									_UpperCAmelCase							 =		jnp.array(snake_case						)
									self.assertTrue(np.allclose(squeeze(snake_case	,       axis=2						)	,       np.asarray(squeeze(snake_case	,       axis=2						)						)						)						)






							def        lowerCamelCase_   (  self						)			->							Union[str, Any]:
									_UpperCAmelCase							 =		np.random.randn(3	,       4						)
									self.assertTrue(np.allclose(expand_dims(snake_case	,       axis=1						)	,       np.expand_dims(snake_case	,       axis=1						)						)						)






							@require_torch
							def        lowerCamelCase_   (  self						)			->							Dict:
									_UpperCAmelCase							 =		np.random.randn(3	,       4						)
									_UpperCAmelCase							 =		torch.tensor(snake_case						)
									self.assertTrue(np.allclose(expand_dims(snake_case	,       axis=1						)	,       expand_dims(snake_case	,       axis=1						).numpy()						)						)






							@require_tf
							def        lowerCamelCase_   (  self						)			->							int:
									_UpperCAmelCase							 =		np.random.randn(3	,       4						)
									_UpperCAmelCase							 =		tf.constant(snake_case						)
									self.assertTrue(np.allclose(expand_dims(snake_case	,       axis=1						)	,       expand_dims(snake_case	,       axis=1						).numpy()						)						)






							@require_flax
							def        lowerCamelCase_   (  self						)			->							str:
									_UpperCAmelCase							 =		np.random.randn(3	,       4						)
									_UpperCAmelCase							 =		jnp.array(snake_case						)
									self.assertTrue(np.allclose(expand_dims(snake_case	,       axis=1						)	,       np.asarray(expand_dims(snake_case	,       axis=1						)						)						)						)


