Delete TTS/vocoder/models/fatchord_version.py

TTS/vocoder/models/fatchord_version.py

@@ -1,413 +0,0 @@
-import torch
-import torch.nn as nn
-import torch.nn.functional as F
-from vocoder.distribution import sample_from_discretized_mix_logistic
-from vocoder.display import *
-from vocoder.audio import *
-
-
-class ResBlock(nn.Module):
-    def __init__(self, dims):
-        super().__init__()
-        self.conv1 = nn.Conv1d(dims, dims, kernel_size=1, bias=False)
-        self.conv2 = nn.Conv1d(dims, dims, kernel_size=1, bias=False)
-        self.batch_norm1 = nn.BatchNorm1d(dims)
-        self.batch_norm2 = nn.BatchNorm1d(dims)
-
-    def forward(self, x):
-        residual = x
-        x = self.conv1(x)
-        x = self.batch_norm1(x)
-        x = F.relu(x)
-        x = self.conv2(x)
-        x = self.batch_norm2(x)
-        return x + residual
-
-
-class MelResNet(nn.Module):
-    def __init__(self, res_blocks, in_dims, compute_dims, res_out_dims, pad):
-        super().__init__()
-        k_size = pad * 2 + 1
-        self.conv_in = nn.Conv1d(in_dims, compute_dims, kernel_size=k_size, bias=False)
-        self.batch_norm = nn.BatchNorm1d(compute_dims)
-        self.layers = nn.ModuleList()
-        for i in range(res_blocks):
-            self.layers.append(ResBlock(compute_dims))
-        self.conv_out = nn.Conv1d(compute_dims, res_out_dims, kernel_size=1)
-
-    def forward(self, x):
-        x = self.conv_in(x)
-        x = self.batch_norm(x)
-        x = F.relu(x)
-        for f in self.layers: x = f(x)
-        x = self.conv_out(x)
-        return x
-
-
-class Stretch2d(nn.Module):
-    def __init__(self, x_scale, y_scale):
-        super().__init__()
-        self.x_scale = x_scale
-        self.y_scale = y_scale
-
-    def forward(self, x):
-        b, c, h, w = x.size()
-        x = x.unsqueeze(-1).unsqueeze(3)
-        x = x.repeat(1, 1, 1, self.y_scale, 1, self.x_scale)
-        return x.view(b, c, h * self.y_scale, w * self.x_scale)
-
-
-class UpsampleNetwork(nn.Module):
-    def __init__(self, feat_dims, upsample_scales, compute_dims,
-                 res_blocks, res_out_dims, pad):
-        super().__init__()
-        total_scale = np.cumproduct(upsample_scales)[-1]
-        self.indent = pad * total_scale
-        self.resnet = MelResNet(res_blocks, feat_dims, compute_dims, res_out_dims, pad)
-        self.resnet_stretch = Stretch2d(total_scale, 1)
-        self.up_layers = nn.ModuleList()
-        for scale in upsample_scales:
-            k_size = (1, scale * 2 + 1)
-            padding = (0, scale)
-            stretch = Stretch2d(scale, 1)
-            conv = nn.Conv2d(1, 1, kernel_size=k_size, padding=padding, bias=False)
-            conv.weight.data.fill_(1. / k_size[1])
-            self.up_layers.append(stretch)
-            self.up_layers.append(conv)
-
-    def forward(self, m):
-        aux = self.resnet(m).unsqueeze(1)
-        aux = self.resnet_stretch(aux)
-        aux = aux.squeeze(1)
-        m = m.unsqueeze(1)
-        for f in self.up_layers: m = f(m)
-        m = m.squeeze(1)[:, :, self.indent:-self.indent]
-        return m.transpose(1, 2), aux.transpose(1, 2)
-
-
-class WaveRNN(nn.Module):
-    def __init__(self, rnn_dims, fc_dims, bits, pad, upsample_factors,
-                 feat_dims, compute_dims, res_out_dims, res_blocks,
-                 hop_length, sample_rate, mode='RAW'):
-        super().__init__()
-        self.mode = mode
-        self.pad = pad
-        if self.mode == 'RAW' :
-            self.n_classes = 2 ** bits
-        elif self.mode == 'MOL' :
-            self.n_classes = 30
-        else :
-            RuntimeError("Unknown model mode value - ", self.mode)
-
-        self.rnn_dims = rnn_dims
-        self.aux_dims = res_out_dims // 4
-        self.hop_length = hop_length
-        self.sample_rate = sample_rate
-
-        self.upsample = UpsampleNetwork(feat_dims, upsample_factors, compute_dims, res_blocks, res_out_dims, pad)
-        self.I = nn.Linear(feat_dims + self.aux_dims + 1, rnn_dims)
-        self.rnn1 = nn.GRU(rnn_dims, rnn_dims, batch_first=True)
-        self.rnn2 = nn.GRU(rnn_dims + self.aux_dims, rnn_dims, batch_first=True)
-        self.fc1 = nn.Linear(rnn_dims + self.aux_dims, fc_dims)
-        self.fc2 = nn.Linear(fc_dims + self.aux_dims, fc_dims)
-        self.fc3 = nn.Linear(fc_dims, self.n_classes)
-
-        self.step = nn.Parameter(torch.zeros(1).long(), requires_grad=False)
-        self.num_params()
-
-    def forward(self, x, mels):
-        self.step += 1
-        bsize = x.size(0)
-        h1 = torch.zeros(1, bsize, self.rnn_dims).cuda()
-        h2 = torch.zeros(1, bsize, self.rnn_dims).cuda()
-        mels, aux = self.upsample(mels)
-
-        aux_idx = [self.aux_dims * i for i in range(5)]
-        a1 = aux[:, :, aux_idx[0]:aux_idx[1]]
-        a2 = aux[:, :, aux_idx[1]:aux_idx[2]]
-        a3 = aux[:, :, aux_idx[2]:aux_idx[3]]
-        a4 = aux[:, :, aux_idx[3]:aux_idx[4]]
-
-        x = torch.cat([x.unsqueeze(-1), mels, a1], dim=2)
-        x = self.I(x)
-        res = x
-        x, _ = self.rnn1(x, h1)
-
-        x = x + res
-        res = x
-        x = torch.cat([x, a2], dim=2)
-        x, _ = self.rnn2(x, h2)
-
-        x = x + res
-        x = torch.cat([x, a3], dim=2)
-        x = F.relu(self.fc1(x))
-
-        x = torch.cat([x, a4], dim=2)
-        x = F.relu(self.fc2(x))
-        return self.fc3(x)
-
-    def generate(self, mels, batched, target, overlap, mu_law, progress_callback=None):
-        mu_law = mu_law if self.mode == 'RAW' else False
-        progress_callback = progress_callback or self.gen_display
-
-        self.eval()
-        output = []
-        start = time.time()
-        rnn1 = self.get_gru_cell(self.rnn1)
-        rnn2 = self.get_gru_cell(self.rnn2)
-
-        with torch.no_grad():
-            mels = mels.cuda()
-            wave_len = (mels.size(-1) - 1) * self.hop_length
-            mels = self.pad_tensor(mels.transpose(1, 2), pad=self.pad, side='both')
-            mels, aux = self.upsample(mels.transpose(1, 2))
-
-            if batched:
-                mels = self.fold_with_overlap(mels, target, overlap)
-                aux = self.fold_with_overlap(aux, target, overlap)
-
-            b_size, seq_len, _ = mels.size()
-
-            h1 = torch.zeros(b_size, self.rnn_dims).cuda()
-            h2 = torch.zeros(b_size, self.rnn_dims).cuda()
-            x = torch.zeros(b_size, 1).cuda()
-
-            d = self.aux_dims
-            aux_split = [aux[:, :, d * i:d * (i + 1)] for i in range(4)]
-
-            for i in range(seq_len):
-
-                m_t = mels[:, i, :]
-
-                a1_t, a2_t, a3_t, a4_t = (a[:, i, :] for a in aux_split)
-
-                x = torch.cat([x, m_t, a1_t], dim=1)
-                x = self.I(x)
-                h1 = rnn1(x, h1)
-
-                x = x + h1
-                inp = torch.cat([x, a2_t], dim=1)
-                h2 = rnn2(inp, h2)
-
-                x = x + h2
-                x = torch.cat([x, a3_t], dim=1)
-                x = F.relu(self.fc1(x))
-
-                x = torch.cat([x, a4_t], dim=1)
-                x = F.relu(self.fc2(x))
-
-                logits = self.fc3(x)
-
-                if self.mode == 'MOL':
-                    sample = sample_from_discretized_mix_logistic(logits.unsqueeze(0).transpose(1, 2))
-                    output.append(sample.view(-1))
-                    # x = torch.FloatTensor([[sample]]).cuda()
-                    x = sample.transpose(0, 1).cuda()
-
-                elif self.mode == 'RAW' :
-                    posterior = F.softmax(logits, dim=1)
-                    distrib = torch.distributions.Categorical(posterior)
-
-                    sample = 2 * distrib.sample().float() / (self.n_classes - 1.) - 1.
-                    output.append(sample)
-                    x = sample.unsqueeze(-1)
-                else:
-                    raise RuntimeError("Unknown model mode value - ", self.mode)
-
-                if i % 100 == 0:
-                    gen_rate = (i + 1) / (time.time() - start) * b_size / 1000
-                    progress_callback(i, seq_len, b_size, gen_rate)
-
-        output = torch.stack(output).transpose(0, 1)
-        output = output.cpu().numpy()
-        output = output.astype(np.float64)
-        
-        if batched:
-            output = self.xfade_and_unfold(output, target, overlap)
-        else:
-            output = output[0]
-
-        if mu_law:
-            output = decode_mu_law(output, self.n_classes, False)
-        if hp.apply_preemphasis:
-            output = de_emphasis(output)
-
-        # Fade-out at the end to avoid signal cutting out suddenly
-        fade_out = np.linspace(1, 0, 20 * self.hop_length)
-        output = output[:wave_len]
-        output[-20 * self.hop_length:] *= fade_out
-        
-        self.train()
-
-        return output
-
-
-    def gen_display(self, i, seq_len, b_size, gen_rate):
-        pbar = progbar(i, seq_len)
-        msg = f'| {pbar} {i*b_size}/{seq_len*b_size} | Batch Size: {b_size} | Gen Rate: {gen_rate:.1f}kHz | '
-        stream(msg)
-
-    def get_gru_cell(self, gru):
-        gru_cell = nn.GRUCell(gru.input_size, gru.hidden_size)
-        gru_cell.weight_hh.data = gru.weight_hh_l0.data
-        gru_cell.weight_ih.data = gru.weight_ih_l0.data
-        gru_cell.bias_hh.data = gru.bias_hh_l0.data
-        gru_cell.bias_ih.data = gru.bias_ih_l0.data
-        return gru_cell
-
-    def pad_tensor(self, x, pad, side='both'):
-        # NB - this is just a quick method i need right now
-        # i.e., it won't generalise to other shapes/dims
-        b, t, c = x.size()
-        total = t + 2 * pad if side == 'both' else t + pad
-        padded = torch.zeros(b, total, c).cuda()
-        if side == 'before' or side == 'both':
-            padded[:, pad:pad + t, :] = x
-        elif side == 'after':
-            padded[:, :t, :] = x
-        return padded
-
-    def fold_with_overlap(self, x, target, overlap):
-
-        ''' Fold the tensor with overlap for quick batched inference.
-            Overlap will be used for crossfading in xfade_and_unfold()
-
-        Args:
-            x (tensor)    : Upsampled conditioning features.
-                            shape=(1, timesteps, features)
-            target (int)  : Target timesteps for each index of batch
-            overlap (int) : Timesteps for both xfade and rnn warmup
-
-        Return:
-            (tensor) : shape=(num_folds, target + 2 * overlap, features)
-
-        Details:
-            x = [[h1, h2, ... hn]]
-
-            Where each h is a vector of conditioning features
-
-            Eg: target=2, overlap=1 with x.size(1)=10
-
-            folded = [[h1, h2, h3, h4],
-                      [h4, h5, h6, h7],
-                      [h7, h8, h9, h10]]
-        '''
-
-        _, total_len, features = x.size()
-
-        # Calculate variables needed
-        num_folds = (total_len - overlap) // (target + overlap)
-        extended_len = num_folds * (overlap + target) + overlap
-        remaining = total_len - extended_len
-
-        # Pad if some time steps poking out
-        if remaining != 0:
-            num_folds += 1
-            padding = target + 2 * overlap - remaining
-            x = self.pad_tensor(x, padding, side='after')
-
-        folded = torch.zeros(num_folds, target + 2 * overlap, features).cuda()
-
-        # Get the values for the folded tensor
-        for i in range(num_folds):
-            start = i * (target + overlap)
-            end = start + target + 2 * overlap
-            folded[i] = x[:, start:end, :]
-
-        return folded
-
-    def xfade_and_unfold(self, y, target, overlap):
-
-        ''' Applies a crossfade and unfolds into a 1d array.
-
-        Args:
-            y (ndarry)    : Batched sequences of audio samples
-                            shape=(num_folds, target + 2 * overlap)
-                            dtype=np.float64
-            overlap (int) : Timesteps for both xfade and rnn warmup
-
-        Return:
-            (ndarry) : audio samples in a 1d array
-                       shape=(total_len)
-                       dtype=np.float64
-
-        Details:
-            y = [[seq1],
-                 [seq2],
-                 [seq3]]
-
-            Apply a gain envelope at both ends of the sequences
-
-            y = [[seq1_in, seq1_target, seq1_out],
-                 [seq2_in, seq2_target, seq2_out],
-                 [seq3_in, seq3_target, seq3_out]]
-
-            Stagger and add up the groups of samples:
-
-            [seq1_in, seq1_target, (seq1_out + seq2_in), seq2_target, ...]
-
-        '''
-
-        num_folds, length = y.shape
-        target = length - 2 * overlap
-        total_len = num_folds * (target + overlap) + overlap
-
-        # Need some silence for the rnn warmup
-        silence_len = overlap // 2
-        fade_len = overlap - silence_len
-        silence = np.zeros((silence_len), dtype=np.float64)
-
-        # Equal power crossfade
-        t = np.linspace(-1, 1, fade_len, dtype=np.float64)
-        fade_in = np.sqrt(0.5 * (1 + t))
-        fade_out = np.sqrt(0.5 * (1 - t))
-
-        # Concat the silence to the fades
-        fade_in = np.concatenate([silence, fade_in])
-        fade_out = np.concatenate([fade_out, silence])
-
-        # Apply the gain to the overlap samples
-        y[:, :overlap] *= fade_in
-        y[:, -overlap:] *= fade_out
-
-        unfolded = np.zeros((total_len), dtype=np.float64)
-
-        # Loop to add up all the samples
-        for i in range(num_folds):
-            start = i * (target + overlap)
-            end = start + target + 2 * overlap
-            unfolded[start:end] += y[i]
-
-        return unfolded
-
-    def get_step(self) :
-        return self.step.data.item()
-
-    def checkpoint(self, model_dir, optimizer) :
-        k_steps = self.get_step() // 1000
-        self.save(model_dir.joinpath("checkpoint_%dk_steps.pt" % k_steps), optimizer)
-
-    def log(self, path, msg) :
-        with open(path, 'a') as f:
-            print(msg, file=f)
-
-    def load(self, path, optimizer) :
-        checkpoint = torch.load(path)
-        if "optimizer_state" in checkpoint:
-            self.load_state_dict(checkpoint["model_state"])
-            optimizer.load_state_dict(checkpoint["optimizer_state"])
-        else:
-            # Backwards compatibility
-            self.load_state_dict(checkpoint)
-
-    def save(self, path, optimizer) :
-        torch.save({
-            "model_state": self.state_dict(),
-            "optimizer_state": optimizer.state_dict(),
-        }, path)
-
-    def num_params(self, print_out=True):
-        parameters = filter(lambda p: p.requires_grad, self.parameters())
-        parameters = sum([np.prod(p.size()) for p in parameters]) / 1_000_000
-        if print_out :
-            print('Trainable Parameters: %.3fM' % parameters)