forked from mrq/DL-Art-School
93 lines
3.2 KiB
Python
93 lines
3.2 KiB
Python
import os
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import random
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import torch
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import torch.utils.data
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import torchaudio
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from tqdm import tqdm
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from data.audio.wav_aug import WavAugmentor
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from data.util import get_image_paths, is_wav_file
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from models.tacotron2.taco_utils import load_wav_to_torch
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from utils.util import opt_get
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class WavfileDataset(torch.utils.data.Dataset):
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def __init__(self, opt):
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self.path = os.path.dirname(opt['path'])
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cache_path = os.path.join(self.path, 'cache.pth')
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if os.path.exists(cache_path):
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self.audiopaths = torch.load(cache_path)
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else:
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print("Building cache..")
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self.audiopaths = get_image_paths('img', opt['path'], qualifier=is_wav_file)[0]
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torch.save(self.audiopaths, cache_path)
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# Parse options
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self.sampling_rate = opt_get(opt, ['sampling_rate'], 24000)
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self.augment = opt_get(opt, ['do_augmentation'], False)
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self.max_wav_value = 32768.0
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self.window = 2 * self.sampling_rate
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if self.augment:
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self.augmentor = WavAugmentor()
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def get_audio_for_index(self, index):
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audiopath = self.audiopaths[index]
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filename = os.path.join(self.path, audiopath)
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audio, sampling_rate = load_wav_to_torch(filename)
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if sampling_rate != self.sampling_rate:
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raise ValueError(f"Input sampling rate does not match specified rate {self.sampling_rate}")
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audio_norm = audio / self.max_wav_value
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audio_norm = audio_norm.unsqueeze(0)
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return audio_norm, audiopath
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def __getitem__(self, index):
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clip1, clip2 = None, None
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while clip1 is None and clip2 is None:
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# Split audio_norm into two tensors of equal size.
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audio_norm, filename = self.get_audio_for_index(index)
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if audio_norm.shape[1] < self.window * 2:
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# Try next index. This adds a bit of bias and ideally we'd filter the dataset rather than do this.
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index = (index + 1) % len(self)
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continue
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j = random.randint(0, audio_norm.shape[1] - self.window)
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clip1 = audio_norm[:, j:j+self.window]
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if self.augment:
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clip1 = self.augmentor.augment(clip1, self.sampling_rate)
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j = random.randint(0, audio_norm.shape[1]-self.window)
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clip2 = audio_norm[:, j:j+self.window]
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if self.augment:
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clip2 = self.augmentor.augment(clip2, self.sampling_rate)
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return {
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'clip1': clip1,
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'clip2': clip2,
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'path': filename,
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}
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def __len__(self):
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return len(self.audiopaths)
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if __name__ == '__main__':
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params = {
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'mode': 'wavfile_clips',
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'path': 'E:\\audio\\LibriTTS\\train-other-500',
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'phase': 'train',
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'n_workers': 0,
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'batch_size': 16,
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'do_augmentation': True,
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}
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from data import create_dataset, create_dataloader, util
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ds, c = create_dataset(params, return_collate=True)
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dl = create_dataloader(ds, params, collate_fn=c)
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i = 0
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for b in tqdm(dl):
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torchaudio.save(f'{i}_clip1.wav', b['clip1'], ds.sampling_rate)
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torchaudio.save(f'{i}_clip2.wav', b['clip2'], ds.sampling_rate)
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i += 1
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