# Copyright 2022 Facebook AI and The HuggingFace Inc. team. All rights reserved.
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# Licensed under the Apache License, Version 2.0 (the "License");
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#     http://www.apache.org/licenses/LICENSE-2.0
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"""ViT MAE model configuration"""

from huggingface_hub.dataclasses import strict

from ...configuration_utils import PreTrainedConfig
from ...utils import auto_docstring


@auto_docstring(checkpoint="facebook/vit-mae-base")
@strict
class ViTMAEConfig(PreTrainedConfig):
    r"""
    decoder_num_hidden_layers (`int`, *optional*, defaults to 8):
        Number of hidden layers in the decoder.
    mask_ratio (`float`, *optional*, defaults to 0.75):
        The ratio of the number of masked tokens in the input sequence.
    norm_pix_loss (`bool`, *optional*, defaults to `False`):
        Whether or not to train with normalized pixels (see Table 3 in the paper). Using normalized pixels improved
        representation quality in the experiments of the authors.

    Example:

    ```python
    >>> from transformers import ViTMAEConfig, ViTMAEModel

    >>> # Initializing a ViT MAE vit-mae-base style configuration
    >>> configuration = ViTMAEConfig()

    >>> # Initializing a model (with random weights) from the vit-mae-base style configuration
    >>> model = ViTMAEModel(configuration)

    >>> # Accessing the model configuration
    >>> configuration = model.config
    ```"""

    model_type = "vit_mae"

    hidden_size: int = 768
    num_hidden_layers: int = 12
    num_attention_heads: int = 12
    intermediate_size: int = 3072
    hidden_act: str = "gelu"
    hidden_dropout_prob: float | int = 0.0
    attention_probs_dropout_prob: float | int = 0.0
    initializer_range: float = 0.02
    layer_norm_eps: float = 1e-12
    image_size: int | list[int] | tuple[int, int] = 224
    patch_size: int | list[int] | tuple[int, int] = 16
    num_channels: int = 3
    qkv_bias: bool = True
    decoder_num_attention_heads: int = 16
    decoder_hidden_size: int = 512
    decoder_num_hidden_layers: int = 8
    decoder_intermediate_size: int = 2048
    mask_ratio: float = 0.75
    norm_pix_loss: bool = False


__all__ = ["ViTMAEConfig"]