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| # Copyright (c) 2023 Amphion. | |
| # | |
| # This source code is licensed under the MIT license found in the | |
| # LICENSE file in the root directory of this source tree. | |
| import torch | |
| import torch.nn.functional as F | |
| import torch.nn as nn | |
| from torch.nn import Conv2d, Conv1d | |
| from torch.nn.utils import weight_norm, spectral_norm | |
| from torch import nn | |
| from modules.vocoder_blocks import * | |
| LRELU_SLOPE = 0.1 | |
| class DiscriminatorP(torch.nn.Module): | |
| def __init__(self, cfg, period, kernel_size=5, stride=3, use_spectral_norm=False): | |
| super(DiscriminatorP, self).__init__() | |
| self.period = period | |
| self.d_mult = cfg.model.mpd.discriminator_channel_mult_factor | |
| norm_f = weight_norm if use_spectral_norm == False else spectral_norm | |
| self.convs = nn.ModuleList( | |
| [ | |
| norm_f( | |
| Conv2d( | |
| 1, | |
| int(32 * self.d_mult), | |
| (kernel_size, 1), | |
| (stride, 1), | |
| padding=(get_padding(5, 1), 0), | |
| ) | |
| ), | |
| norm_f( | |
| Conv2d( | |
| int(32 * self.d_mult), | |
| int(128 * self.d_mult), | |
| (kernel_size, 1), | |
| (stride, 1), | |
| padding=(get_padding(5, 1), 0), | |
| ) | |
| ), | |
| norm_f( | |
| Conv2d( | |
| int(128 * self.d_mult), | |
| int(512 * self.d_mult), | |
| (kernel_size, 1), | |
| (stride, 1), | |
| padding=(get_padding(5, 1), 0), | |
| ) | |
| ), | |
| norm_f( | |
| Conv2d( | |
| int(512 * self.d_mult), | |
| int(1024 * self.d_mult), | |
| (kernel_size, 1), | |
| (stride, 1), | |
| padding=(get_padding(5, 1), 0), | |
| ) | |
| ), | |
| norm_f( | |
| Conv2d( | |
| int(1024 * self.d_mult), | |
| int(1024 * self.d_mult), | |
| (kernel_size, 1), | |
| (stride, 1), | |
| padding=(2, 0), | |
| ) | |
| ), | |
| ] | |
| ) | |
| self.conv_post = norm_f( | |
| Conv2d(int(1024 * self.d_mult), 1, (3, 1), 1, padding=(1, 0)) | |
| ) | |
| def forward(self, x): | |
| fmap = [] | |
| # 1d to 2d | |
| b, c, t = x.shape | |
| if t % self.period != 0: # pad first | |
| n_pad = self.period - (t % self.period) | |
| x = F.pad(x, (0, n_pad), "reflect") | |
| t = t + n_pad | |
| x = x.view(b, c, t // self.period, self.period) | |
| for l in self.convs: | |
| x = l(x) | |
| x = F.leaky_relu(x, LRELU_SLOPE) | |
| fmap.append(x) | |
| x = self.conv_post(x) | |
| fmap.append(x) | |
| x = torch.flatten(x, 1, -1) | |
| return x, fmap | |
| class MultiPeriodDiscriminator(torch.nn.Module): | |
| def __init__(self, cfg): | |
| super(MultiPeriodDiscriminator, self).__init__() | |
| self.mpd_reshapes = cfg.model.mpd.mpd_reshapes | |
| print("mpd_reshapes: {}".format(self.mpd_reshapes)) | |
| discriminators = [ | |
| DiscriminatorP(cfg, rs, use_spectral_norm=cfg.model.mpd.use_spectral_norm) | |
| for rs in self.mpd_reshapes | |
| ] | |
| self.discriminators = nn.ModuleList(discriminators) | |
| def forward(self, y, y_hat): | |
| y_d_rs = [] | |
| y_d_gs = [] | |
| fmap_rs = [] | |
| fmap_gs = [] | |
| for i, d in enumerate(self.discriminators): | |
| y_d_r, fmap_r = d(y) | |
| y_d_g, fmap_g = d(y_hat) | |
| y_d_rs.append(y_d_r) | |
| fmap_rs.append(fmap_r) | |
| y_d_gs.append(y_d_g) | |
| fmap_gs.append(fmap_g) | |
| return y_d_rs, y_d_gs, fmap_rs, fmap_gs | |
| # TODO: merge with DiscriminatorP (lmxue, yicheng) | |
| class DiscriminatorP_vits(torch.nn.Module): | |
| def __init__(self, period, kernel_size=5, stride=3, use_spectral_norm=False): | |
| super(DiscriminatorP_vits, self).__init__() | |
| self.period = period | |
| self.use_spectral_norm = use_spectral_norm | |
| norm_f = weight_norm if use_spectral_norm == False else spectral_norm | |
| self.convs = nn.ModuleList( | |
| [ | |
| norm_f( | |
| Conv2d( | |
| 1, | |
| 32, | |
| (kernel_size, 1), | |
| (stride, 1), | |
| padding=(get_padding(kernel_size, 1), 0), | |
| ) | |
| ), | |
| norm_f( | |
| Conv2d( | |
| 32, | |
| 128, | |
| (kernel_size, 1), | |
| (stride, 1), | |
| padding=(get_padding(kernel_size, 1), 0), | |
| ) | |
| ), | |
| norm_f( | |
| Conv2d( | |
| 128, | |
| 512, | |
| (kernel_size, 1), | |
| (stride, 1), | |
| padding=(get_padding(kernel_size, 1), 0), | |
| ) | |
| ), | |
| norm_f( | |
| Conv2d( | |
| 512, | |
| 1024, | |
| (kernel_size, 1), | |
| (stride, 1), | |
| padding=(get_padding(kernel_size, 1), 0), | |
| ) | |
| ), | |
| norm_f( | |
| Conv2d( | |
| 1024, | |
| 1024, | |
| (kernel_size, 1), | |
| 1, | |
| padding=(get_padding(kernel_size, 1), 0), | |
| ) | |
| ), | |
| ] | |
| ) | |
| self.conv_post = norm_f(Conv2d(1024, 1, (3, 1), 1, padding=(1, 0))) | |
| def forward(self, x): | |
| fmap = [] | |
| # 1d to 2d | |
| b, c, t = x.shape | |
| if t % self.period != 0: # pad first | |
| n_pad = self.period - (t % self.period) | |
| x = F.pad(x, (0, n_pad), "reflect") | |
| t = t + n_pad | |
| x = x.view(b, c, t // self.period, self.period) | |
| for l in self.convs: | |
| x = l(x) | |
| x = F.leaky_relu(x, LRELU_SLOPE) | |
| fmap.append(x) | |
| x = self.conv_post(x) | |
| fmap.append(x) | |
| x = torch.flatten(x, 1, -1) | |
| return x, fmap | |
| class DiscriminatorS(torch.nn.Module): | |
| def __init__(self, use_spectral_norm=False): | |
| super(DiscriminatorS, self).__init__() | |
| norm_f = weight_norm if use_spectral_norm == False else spectral_norm | |
| self.convs = nn.ModuleList( | |
| [ | |
| norm_f(Conv1d(1, 16, 15, 1, padding=7)), | |
| norm_f(Conv1d(16, 64, 41, 4, groups=4, padding=20)), | |
| norm_f(Conv1d(64, 256, 41, 4, groups=16, padding=20)), | |
| norm_f(Conv1d(256, 1024, 41, 4, groups=64, padding=20)), | |
| norm_f(Conv1d(1024, 1024, 41, 4, groups=256, padding=20)), | |
| norm_f(Conv1d(1024, 1024, 5, 1, padding=2)), | |
| ] | |
| ) | |
| self.conv_post = norm_f(Conv1d(1024, 1, 3, 1, padding=1)) | |
| def forward(self, x): | |
| fmap = [] | |
| for l in self.convs: | |
| x = l(x) | |
| x = F.leaky_relu(x, LRELU_SLOPE) | |
| fmap.append(x) | |
| x = self.conv_post(x) | |
| fmap.append(x) | |
| x = torch.flatten(x, 1, -1) | |
| return x, fmap | |
| # TODO: merge with MultiPeriodDiscriminator (lmxue, yicheng) | |
| class MultiPeriodDiscriminator_vits(torch.nn.Module): | |
| def __init__(self, use_spectral_norm=False): | |
| super(MultiPeriodDiscriminator_vits, self).__init__() | |
| periods = [2, 3, 5, 7, 11] | |
| discs = [DiscriminatorS(use_spectral_norm=use_spectral_norm)] | |
| discs = discs + [ | |
| DiscriminatorP_vits(i, use_spectral_norm=use_spectral_norm) for i in periods | |
| ] | |
| self.discriminators = nn.ModuleList(discs) | |
| def forward(self, y, y_hat): | |
| y_d_rs = [] | |
| y_d_gs = [] | |
| fmap_rs = [] | |
| fmap_gs = [] | |
| for i, d in enumerate(self.discriminators): | |
| y_d_r, fmap_r = d(y) | |
| y_d_g, fmap_g = d(y_hat) | |
| y_d_rs.append(y_d_r) | |
| y_d_gs.append(y_d_g) | |
| fmap_rs.append(fmap_r) | |
| fmap_gs.append(fmap_g) | |
| outputs = { | |
| "y_d_hat_r": y_d_rs, | |
| "y_d_hat_g": y_d_gs, | |
| "fmap_rs": fmap_rs, | |
| "fmap_gs": fmap_gs, | |
| } | |
| return outputs | |