| # Copyright (c) Facebook, Inc. and its affiliates. | |
| # | |
| # This source code is licensed under the MIT license found in the | |
| # LICENSE file in the root directory of this source tree. | |
| from torch import nn | |
| class SamePad(nn.Module): | |
| def __init__(self, kernel_size, causal=False): | |
| super().__init__() | |
| if causal: | |
| self.remove = kernel_size - 1 | |
| else: | |
| self.remove = 1 if kernel_size % 2 == 0 else 0 | |
| def forward(self, x): | |
| if self.remove > 0: | |
| x = x[:, :, : -self.remove] | |
| return x | |