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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 argparse | |
| import os | |
| import torch | |
| import soundfile as sf | |
| import numpy as np | |
| from models.tts.naturalspeech2.ns2 import NaturalSpeech2 | |
| from encodec import EncodecModel | |
| from encodec.utils import convert_audio | |
| from utils.util import load_config | |
| from text import text_to_sequence | |
| from text.cmudict import valid_symbols | |
| from text.g2p import preprocess_english, read_lexicon | |
| import torchaudio | |
| class NS2Inference: | |
| def __init__(self, args, cfg): | |
| self.cfg = cfg | |
| self.args = args | |
| self.model = self.build_model() | |
| self.codec = self.build_codec() | |
| self.symbols = valid_symbols + ["sp", "spn", "sil"] + ["<s>", "</s>"] | |
| self.phone2id = {s: i for i, s in enumerate(self.symbols)} | |
| self.id2phone = {i: s for s, i in self.phone2id.items()} | |
| def build_model(self): | |
| model = NaturalSpeech2(self.cfg.model) | |
| model.load_state_dict( | |
| torch.load( | |
| os.path.join(self.args.checkpoint_path, "pytorch_model.bin"), | |
| map_location="cpu", | |
| ) | |
| ) | |
| model = model.to(self.args.device) | |
| return model | |
| def build_codec(self): | |
| encodec_model = EncodecModel.encodec_model_24khz() | |
| encodec_model = encodec_model.to(device=self.args.device) | |
| encodec_model.set_target_bandwidth(12.0) | |
| return encodec_model | |
| def get_ref_code(self): | |
| ref_wav_path = self.args.ref_audio | |
| ref_wav, sr = torchaudio.load(ref_wav_path) | |
| ref_wav = convert_audio( | |
| ref_wav, sr, self.codec.sample_rate, self.codec.channels | |
| ) | |
| ref_wav = ref_wav.unsqueeze(0).to(device=self.args.device) | |
| with torch.no_grad(): | |
| encoded_frames = self.codec.encode(ref_wav) | |
| ref_code = torch.cat([encoded[0] for encoded in encoded_frames], dim=-1) | |
| # print(ref_code.shape) | |
| ref_mask = torch.ones(ref_code.shape[0], ref_code.shape[-1]).to(ref_code.device) | |
| # print(ref_mask.shape) | |
| return ref_code, ref_mask | |
| def inference(self): | |
| ref_code, ref_mask = self.get_ref_code() | |
| lexicon = read_lexicon(self.cfg.preprocess.lexicon_path) | |
| phone_seq = preprocess_english(self.args.text, lexicon) | |
| print(phone_seq) | |
| phone_id = np.array( | |
| [ | |
| *map( | |
| self.phone2id.get, | |
| phone_seq.replace("{", "").replace("}", "").split(), | |
| ) | |
| ] | |
| ) | |
| phone_id = torch.from_numpy(phone_id).unsqueeze(0).to(device=self.args.device) | |
| print(phone_id) | |
| x0, prior_out = self.model.inference( | |
| ref_code, phone_id, ref_mask, self.args.inference_step | |
| ) | |
| print(prior_out["dur_pred"]) | |
| print(prior_out["dur_pred_round"]) | |
| print(torch.sum(prior_out["dur_pred_round"])) | |
| latent_ref = self.codec.quantizer.vq.decode(ref_code.transpose(0, 1)) | |
| rec_wav = self.codec.decoder(x0) | |
| # ref_wav = self.codec.decoder(latent_ref) | |
| os.makedirs(self.args.output_dir, exist_ok=True) | |
| sf.write( | |
| "{}/{}.wav".format( | |
| self.args.output_dir, self.args.text.replace(" ", "_", 100) | |
| ), | |
| rec_wav[0, 0].detach().cpu().numpy(), | |
| samplerate=24000, | |
| ) | |
| def add_arguments(parser: argparse.ArgumentParser): | |
| parser.add_argument( | |
| "--ref_audio", | |
| type=str, | |
| default="", | |
| help="Reference audio path", | |
| ) | |
| parser.add_argument( | |
| "--device", | |
| type=str, | |
| default="cuda", | |
| ) | |
| parser.add_argument( | |
| "--inference_step", | |
| type=int, | |
| default=200, | |
| help="Total inference steps for the diffusion model", | |
| ) | |