import torch.nn as nn

INPUT_KERNEL = 15
SIZE = 32


class CavemanEnhancer(nn.Module):
    def __init__(self, freq_bins=513):
        super().__init__()
        self.net = nn.Sequential(
            nn.Conv2d(
                in_channels=1,
                out_channels=SIZE,
                kernel_size=INPUT_KERNEL,
                padding=INPUT_KERNEL // 2,
            ),
            nn.ReLU(),
            nn.Conv2d(SIZE, SIZE, kernel_size=3, padding=1),
            nn.ReLU(),
            nn.Conv2d(SIZE, SIZE, kernel_size=3, padding=1),
            nn.ReLU(),
            nn.Conv2d(SIZE, SIZE, kernel_size=3, padding=1),
            nn.ReLU(),
            nn.Conv2d(SIZE, SIZE, kernel_size=3, padding=1),
            nn.ReLU(),
            nn.Conv2d(SIZE, 1, kernel_size=3, padding=1),
        )

    def forward(self, x):
        # x: (batch, freq_bins)
        return self.net(x)