






from ..utils import (
    OptionalDependencyNotAvailable,
    is_flax_available,
    is_scipy_available,
    is_torch_available,
    is_torchsde_available,
)


try:
	if not is_torch_available():
		raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
	from ..utils.dummy_pt_objects import *  # noqa F403
else:
	from .scheduling_consistency_models import CMStochasticIterativeScheduler
	from .scheduling_ddim import DDIMScheduler
	from .scheduling_ddim_inverse import DDIMInverseScheduler
	from .scheduling_ddim_parallel import DDIMParallelScheduler
	from .scheduling_ddpm import DDPMScheduler
	from .scheduling_ddpm_parallel import DDPMParallelScheduler
	from .scheduling_deis_multistep import DEISMultistepScheduler
	from .scheduling_dpmsolver_multistep import DPMSolverMultistepScheduler
	from .scheduling_dpmsolver_multistep_inverse import DPMSolverMultistepInverseScheduler
	from .scheduling_dpmsolver_singlestep import DPMSolverSinglestepScheduler
	from .scheduling_euler_ancestral_discrete import EulerAncestralDiscreteScheduler
	from .scheduling_euler_discrete import EulerDiscreteScheduler
	from .scheduling_heun_discrete import HeunDiscreteScheduler
	from .scheduling_ipndm import IPNDMScheduler
	from .scheduling_k_dpm_2_ancestral_discrete import KDPMaAncestralDiscreteScheduler
	from .scheduling_k_dpm_2_discrete import KDPMaDiscreteScheduler
	from .scheduling_karras_ve import KarrasVeScheduler
	from .scheduling_pndm import PNDMScheduler
	from .scheduling_repaint import RePaintScheduler
	from .scheduling_sde_ve import ScoreSdeVeScheduler
	from .scheduling_sde_vp import ScoreSdeVpScheduler
	from .scheduling_unclip import UnCLIPScheduler
	from .scheduling_unipc_multistep import UniPCMultistepScheduler
	from .scheduling_utils import KarrasDiffusionSchedulers, SchedulerMixin
	from .scheduling_vq_diffusion import VQDiffusionScheduler

try:
	if not is_flax_available():
		raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
	from ..utils.dummy_flax_objects import *  # noqa F403
else:
	from .scheduling_ddim_flax import FlaxDDIMScheduler
	from .scheduling_ddpm_flax import FlaxDDPMScheduler
	from .scheduling_dpmsolver_multistep_flax import FlaxDPMSolverMultistepScheduler
	from .scheduling_karras_ve_flax import FlaxKarrasVeScheduler
	from .scheduling_lms_discrete_flax import FlaxLMSDiscreteScheduler
	from .scheduling_pndm_flax import FlaxPNDMScheduler
	from .scheduling_sde_ve_flax import FlaxScoreSdeVeScheduler
	from .scheduling_utils_flax import (
	    FlaxKarrasDiffusionSchedulers,
	    FlaxSchedulerMixin,
	    FlaxSchedulerOutput,
	    broadcast_to_shape_from_left,
	)


try:
	if not (is_torch_available() and is_scipy_available()):
		raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
	from ..utils.dummy_torch_and_scipy_objects import *  # noqa F403
else:
	from .scheduling_lms_discrete import LMSDiscreteScheduler

try:
	if not (is_torch_available() and is_torchsde_available()):
		raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
	from ..utils.dummy_torch_and_torchsde_objects import *  # noqa F403
else:
	from .scheduling_dpmsolver_sde import DPMSolverSDEScheduler










import math
from typing import Any, Callable, List, Optional, Tuple, Union

import numpy as np
import torch

from ...models import TaFilmDecoder
from ...schedulers import DDPMScheduler
from ...utils import is_onnx_available, logging, randn_tensor


if is_onnx_available():
	from ..onnx_utils import OnnxRuntimeModel

from ..pipeline_utils import AudioPipelineOutput, DiffusionPipeline
from .continous_encoder import SpectrogramContEncoder
from .notes_encoder import SpectrogramNotesEncoder


a__       =     logging.get_logger(__name__)  # pylint: disable=invalid-name

a__       =     2_5_6


class    _lowerCAmelCase			(		lowercase_      ):



				"""simple docstring"""



				_lowercase				:   str      =  ['''melgan''']



				def __init__(      self    :    int			,		UpperCamelCase__    :    SpectrogramNotesEncoder			,		UpperCamelCase__    :    SpectrogramContEncoder			,		UpperCamelCase__    :    TaFilmDecoder			,		UpperCamelCase__    :    DDPMScheduler			,		UpperCamelCase__    :    OnnxRuntimeModel if is_onnx_available() else Any			,		):






											'''simple docstring'''







											super().__init__()

											# From MELGAN
											snake_case__	  =       math.log(1E-5)  # Matches MelGAN training.
											snake_case__	  =       4.0  # Largest value for most examples
											snake_case__	  =       1_2_8

											self.register_modules(
											    notes_encoder=UpperCamelCase__			,		continuous_encoder=UpperCamelCase__			,		decoder=UpperCamelCase__			,		scheduler=UpperCamelCase__			,		melgan=UpperCamelCase__			,		)



				def 					__magic_name__							(      self    :    Tuple			,		UpperCamelCase__    :    Any			,		UpperCamelCase__    :    int=(-1.0, 1.0)			,		UpperCamelCase__    :    Tuple=False):






											'''simple docstring'''







											snake_case__  , snake_case__	  =       output_range
											if clip:
																		snake_case__	  =       torch.clip(UpperCamelCase__			,		self.min_value			,		self.max_value)
											# Scale to [0, 1].
											snake_case__	  =       (features - self.min_value) / (self.max_value - self.min_value)
											# Scale to [min_out, max_out].
											return zero_one * (max_out - min_out) + min_out



				def 					__magic_name__							(      self    :    Optional[Any]			,		UpperCamelCase__    :    str			,		UpperCamelCase__    :    List[str]=(-1.0, 1.0)			,		UpperCamelCase__    :    Optional[Any]=False):






											'''simple docstring'''







											snake_case__  , snake_case__	  =       input_range
											snake_case__	  =       torch.clip(UpperCamelCase__			,		UpperCamelCase__			,		UpperCamelCase__) if clip else outputs
											# Scale to [0, 1].
											snake_case__	  =       (outputs - min_out) / (max_out - min_out)
											# Scale to [self.min_value, self.max_value].
											return zero_one * (self.max_value - self.min_value) + self.min_value



				def 					__magic_name__							(      self    :    Optional[int]			,		UpperCamelCase__    :    Union[str, Any]			,		UpperCamelCase__    :    Optional[int]			,		UpperCamelCase__    :    Any):






											'''simple docstring'''







											snake_case__	  =       input_tokens > 0
											snake_case__  , snake_case__	  =       self.notes_encoder(
											    encoder_input_tokens=UpperCamelCase__			,		encoder_inputs_mask=UpperCamelCase__)

											snake_case__  , snake_case__	  =       self.continuous_encoder(
											    encoder_inputs=UpperCamelCase__			,		encoder_inputs_mask=UpperCamelCase__)

											return [(tokens_encoded, tokens_mask), (continuous_encoded, continuous_mask)]



				def 					__magic_name__							(      self    :    List[Any]			,		UpperCamelCase__    :    Dict			,		UpperCamelCase__    :    Any			,		UpperCamelCase__    :    int):






											'''simple docstring'''







											snake_case__	  =       noise_time
											if not torch.is_tensor(UpperCamelCase__):
																		snake_case__	  =       torch.tensor([timesteps]			,		dtype=torch.long			,		device=input_tokens.device)
											elif torch.is_tensor(UpperCamelCase__) and len(timesteps.shape) == 0:
																		snake_case__	  =       timesteps[None].to(input_tokens.device)

											# broadcast to batch dimension in a way that's compatible with ONNX/Core ML
											snake_case__	  =       timesteps * torch.ones(input_tokens.shape[0]			,		dtype=timesteps.dtype			,		device=timesteps.device)

											snake_case__	  =       self.decoder(
											    encodings_and_masks=UpperCamelCase__			,		decoder_input_tokens=UpperCamelCase__			,		decoder_noise_time=UpperCamelCase__)
											return logits



				@torch.no_grad()
				def __call__(      self    :    Dict			,		UpperCamelCase__    :    List[List[int]]			,		UpperCamelCase__    :    Optional[torch.Generator] = None			,		UpperCamelCase__    :    int = 1_0_0			,		UpperCamelCase__    :    bool = True			,		UpperCamelCase__    :    str = "numpy"			,		UpperCamelCase__    :    Optional[Callable[[int, int, torch.FloatTensor], None]] = None			,		UpperCamelCase__    :    int = 1			,		):






											'''simple docstring'''







											if (callback_steps is None) or (
											    callback_steps is not None and (not isinstance(UpperCamelCase__			,		UpperCamelCase__) or callback_steps <= 0)
											):
																		raise ValueError(
																		    F'''`callback_steps` has to be a positive integer but is {callback_steps} of type'''
																		    F''' {type(UpperCamelCase__)}.''')

											snake_case__	  =       np.zeros([1, TARGET_FEATURE_LENGTH, self.n_dims]			,		dtype=np.floataa)
											snake_case__	  =       np.zeros([1, 0, self.n_dims]			,		np.floataa)
											snake_case__	  =       torch.ones((1, TARGET_FEATURE_LENGTH)			,		dtype=UpperCamelCase__			,		device=self.device)

											for i, encoder_input_tokens in enumerate(UpperCamelCase__):
																		if i == 0:
																									snake_case__	  =       torch.from_numpy(pred_mel[:1].copy()).to(
																									    device=self.device			,		dtype=self.decoder.dtype)
																									# The first chunk has no previous context.
																									snake_case__	  =       torch.zeros((1, TARGET_FEATURE_LENGTH)			,		dtype=UpperCamelCase__			,		device=self.device)
																		else:
																									# The full song pipeline does not feed in a context feature, so the mask
																									# will be all 0s after the feature converter. Because we know we're
																									# feeding in a full context chunk from the previous prediction, set it
																									# to all 1s.
																									snake_case__	  =       ones

																		snake_case__	  =       self.scale_features(
																		    UpperCamelCase__			,		output_range=[-1.0, 1.0]			,		clip=UpperCamelCase__)

																		snake_case__	  =       self.encode(
																		    input_tokens=torch.IntTensor([encoder_input_tokens]).to(device=self.device)			,		continuous_inputs=UpperCamelCase__			,		continuous_mask=UpperCamelCase__			,		)

																		# Sample encoder_continuous_inputs shaped gaussian noise to begin loop
																		snake_case__	  =       randn_tensor(
																		    shape=encoder_continuous_inputs.shape			,		generator=UpperCamelCase__			,		device=self.device			,		dtype=self.decoder.dtype			,		)

																		# set step values
																		self.scheduler.set_timesteps(UpperCamelCase__)

																		# Denoising diffusion loop
																		for j, t in enumerate(self.progress_bar(self.scheduler.timesteps)):
																									snake_case__	  =       self.decode(
																									    encodings_and_masks=UpperCamelCase__			,		input_tokens=UpperCamelCase__			,		noise_time=t / self.scheduler.config.num_train_timesteps			,		)

																									# Compute previous output: x_t -> x_t-1
																									snake_case__	  =       self.scheduler.step(UpperCamelCase__			,		UpperCamelCase__			,		UpperCamelCase__			,		generator=UpperCamelCase__).prev_sample

																		snake_case__	  =       self.scale_to_features(UpperCamelCase__			,		input_range=[-1.0, 1.0])
																		snake_case__	  =       mel[:1]
																		snake_case__	  =       mel.cpu().float().numpy()

																		snake_case__	  =       np.concatenate([full_pred_mel, pred_mel[:1]]			,		axis=1)

																		# call the callback, if provided
																		if callback is not None and i % callback_steps == 0:
																									callback(UpperCamelCase__			,		UpperCamelCase__)

																		logger.info("""Generated segment"""			,		UpperCamelCase__)

											if output_type == "numpy" and not is_onnx_available():
																		raise ValueError(
																		    """Cannot return output in 'np' format if ONNX is not available. Make sure to have ONNX installed or set 'output_type' to 'mel'.""")
											elif output_type == "numpy" and self.melgan is None:
																		raise ValueError(
																		    """Cannot return output in 'np' format if melgan component is not defined. Make sure to define `self.melgan` or set 'output_type' to 'mel'.""")

											if output_type == "numpy":
																		snake_case__	  =       self.melgan(input_features=full_pred_mel.astype(np.floataa))
											else:
																		snake_case__	  =       full_pred_mel

											if not return_dict:
																		return (output,)

											return AudioPipelineOutput(audios=UpperCamelCase__)
