mirror of
https://github.com/Wan-Video/Wan2.1.git
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40 lines
1.2 KiB
Python
40 lines
1.2 KiB
Python
# Copyright (c) Meta Platforms, Inc. and affiliates.
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# All rights reserved.
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#
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# This source code is licensed under the license found in the
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# LICENSE file in the root directory of this source tree.
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# References:
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# https://github.com/facebookresearch/dino/blob/master/vision_transformer.py
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# https://github.com/rwightman/pytorch-image-models/tree/master/timm/layers/mlp.py
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from typing import Callable, Optional
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from torch import Tensor, nn
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class Mlp(nn.Module):
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def __init__(
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self,
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in_features: int,
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hidden_features: Optional[int] = None,
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out_features: Optional[int] = None,
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act_layer: Callable[..., nn.Module] = nn.GELU,
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drop: float = 0.0,
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bias: bool = True,
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) -> None:
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super().__init__()
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out_features = out_features or in_features
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hidden_features = hidden_features or in_features
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self.fc1 = nn.Linear(in_features, hidden_features, bias=bias)
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self.act = act_layer()
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self.fc2 = nn.Linear(hidden_features, out_features, bias=bias)
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self.drop = nn.Dropout(drop)
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def forward(self, x: Tensor) -> Tensor:
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x = self.fc1(x)
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x = self.act(x)
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x = self.drop(x)
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x = self.fc2(x)
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x = self.drop(x)
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return x
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