import torch.nn as nn

class SISUGenerator(nn.Module):
    def __init__(self, upscale_scale=1): # No noise_dim parameter
        super(SISUGenerator, self).__init__()
        self.layers1 = nn.Sequential(
            nn.Conv1d(2, 128, kernel_size=3, padding=1),
            # nn.LeakyReLU(0.2, inplace=True),
            nn.Conv1d(128, 256, kernel_size=3, padding=1),
            # nn.LeakyReLU(0.2, inplace=True),
        )

        self.layers2 = nn.Sequential(
            nn.Conv1d(256, 128, kernel_size=3, padding=1),
            # nn.LeakyReLU(0.2, inplace=True),
            nn.Conv1d(128, 64, kernel_size=3, padding=1),
            # nn.LeakyReLU(0.2, inplace=True),
            nn.Conv1d(64, 2, kernel_size=3, padding=1),
            # nn.Tanh()
        )

    def forward(self, x, scale):
        x = self.layers1(x)
        upsample = nn.Upsample(scale_factor=scale, mode='nearest')
        x = upsample(x)
        x = self.layers2(x)
        return x