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import os |
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import yaml |
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import torch |
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import torch.nn as nn |
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import numpy as np |
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from .diffusion import GaussianDiffusion |
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from .wavenet import WaveNet |
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from .vocoder import Vocoder |
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class DotDict(dict): |
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def __getattr__(*args): |
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val = dict.get(*args) |
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return DotDict(val) if type(val) is dict else val |
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__setattr__ = dict.__setitem__ |
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__delattr__ = dict.__delitem__ |
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def load_model_vocoder( |
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model_path, |
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device='cpu'): |
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config_file = os.path.join(os.path.split(model_path)[0], 'config.yaml') |
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with open(config_file, "r") as config: |
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args = yaml.safe_load(config) |
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args = DotDict(args) |
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vocoder = Vocoder(args.vocoder.type, args.vocoder.ckpt, device=device) |
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model = Unit2Mel( |
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args.data.encoder_out_channels, |
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args.model.n_spk, |
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args.model.use_pitch_aug, |
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vocoder.dimension, |
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args.model.n_layers, |
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args.model.n_chans, |
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args.model.n_hidden) |
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print(' [Loading] ' + model_path) |
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ckpt = torch.load(model_path, map_location=torch.device(device)) |
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model.to(device) |
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model.load_state_dict(ckpt['model']) |
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model.eval() |
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return model, vocoder, args |
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class Unit2Mel(nn.Module): |
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def __init__( |
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self, |
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input_channel, |
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n_spk, |
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use_pitch_aug=False, |
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out_dims=128, |
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n_layers=20, |
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n_chans=384, |
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n_hidden=256): |
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super().__init__() |
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self.unit_embed = nn.Linear(input_channel, n_hidden) |
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self.f0_embed = nn.Linear(1, n_hidden) |
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self.volume_embed = nn.Linear(1, n_hidden) |
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if use_pitch_aug: |
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self.aug_shift_embed = nn.Linear(1, n_hidden, bias=False) |
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else: |
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self.aug_shift_embed = None |
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self.n_spk = n_spk |
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if n_spk is not None and n_spk > 1: |
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self.spk_embed = nn.Embedding(n_spk, n_hidden) |
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self.decoder = GaussianDiffusion(WaveNet(out_dims, n_layers, n_chans, n_hidden), out_dims=out_dims) |
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def forward(self, units, f0, volume, spk_id = None, spk_mix_dict = None, aug_shift = None, |
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gt_spec=None, infer=True, infer_speedup=10, method='dpm-solver', k_step=300, use_tqdm=True): |
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''' |
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input: |
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B x n_frames x n_unit |
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return: |
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dict of B x n_frames x feat |
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''' |
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x = self.unit_embed(units) + self.f0_embed((1+ f0 / 700).log()) + self.volume_embed(volume) |
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if self.n_spk is not None and self.n_spk > 1: |
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if spk_mix_dict is not None: |
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for k, v in spk_mix_dict.items(): |
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spk_id_torch = torch.LongTensor(np.array([[k]])).to(units.device) |
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x = x + v * self.spk_embed(spk_id_torch - 1) |
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else: |
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x = x + self.spk_embed(spk_id - 1) |
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if self.aug_shift_embed is not None and aug_shift is not None: |
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x = x + self.aug_shift_embed(aug_shift / 5) |
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x = self.decoder(x, gt_spec=gt_spec, infer=infer, infer_speedup=infer_speedup, method=method, k_step=k_step, use_tqdm=use_tqdm) |
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return x |
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