| import os | |
| import sys | |
| import torch | |
| sys.path.append(os.getcwd()) | |
| from .commons import fused_add_tanh_sigmoid_multiply | |
| class WaveNet(torch.nn.Module): | |
| def __init__(self, hidden_channels, kernel_size, dilation_rate, n_layers, gin_channels=0, p_dropout=0): | |
| super(WaveNet, self).__init__() | |
| assert kernel_size % 2 == 1 | |
| self.hidden_channels = hidden_channels | |
| self.kernel_size = (kernel_size,) | |
| self.dilation_rate = dilation_rate | |
| self.n_layers = n_layers | |
| self.gin_channels = gin_channels | |
| self.p_dropout = p_dropout | |
| self.in_layers = torch.nn.ModuleList() | |
| self.res_skip_layers = torch.nn.ModuleList() | |
| self.drop = torch.nn.Dropout(p_dropout) | |
| if gin_channels != 0: self.cond_layer = torch.nn.utils.parametrizations.weight_norm(torch.nn.Conv1d(gin_channels, 2 * hidden_channels * n_layers, 1), name="weight") | |
| dilations = [dilation_rate**i for i in range(n_layers)] | |
| paddings = [(kernel_size * d - d) // 2 for d in dilations] | |
| for i in range(n_layers): | |
| in_layer = torch.nn.Conv1d(hidden_channels, 2 * hidden_channels, kernel_size, dilation=dilations[i], padding=paddings[i]) | |
| in_layer = torch.nn.utils.parametrizations.weight_norm(in_layer, name="weight") | |
| self.in_layers.append(in_layer) | |
| res_skip_channels = (hidden_channels if i == n_layers - 1 else 2 * hidden_channels) | |
| res_skip_layer = torch.nn.Conv1d(hidden_channels, res_skip_channels, 1) | |
| res_skip_layer = torch.nn.utils.parametrizations.weight_norm(res_skip_layer, name="weight") | |
| self.res_skip_layers.append(res_skip_layer) | |
| def forward(self, x, x_mask, g=None, **kwargs): | |
| output = torch.zeros_like(x) | |
| n_channels_tensor = torch.IntTensor([self.hidden_channels]) | |
| if g is not None: g = self.cond_layer(g) | |
| for i in range(self.n_layers): | |
| x_in = self.in_layers[i](x) | |
| if g is not None: | |
| cond_offset = i * 2 * self.hidden_channels | |
| g_l = g[:, cond_offset : cond_offset + 2 * self.hidden_channels, :] | |
| else: g_l = torch.zeros_like(x_in) | |
| res_skip_acts = self.res_skip_layers[i](self.drop(fused_add_tanh_sigmoid_multiply(x_in, g_l, n_channels_tensor))) | |
| if i < self.n_layers - 1: | |
| x = (x + (res_skip_acts[:, : self.hidden_channels, :])) * x_mask | |
| output = output + res_skip_acts[:, self.hidden_channels :, :] | |
| else: output = output + res_skip_acts | |
| return output * x_mask | |
| def remove_weight_norm(self): | |
| if self.gin_channels != 0: torch.nn.utils.remove_weight_norm(self.cond_layer) | |
| for l in self.in_layers: | |
| torch.nn.utils.remove_weight_norm(l) | |
| for l in self.res_skip_layers: | |
| torch.nn.utils.remove_weight_norm(l) |