import os import random import torch import torch.utils.data import torchaudio from tqdm import tqdm from data.audio.wav_aug import WavAugmentor from data.util import find_files_of_type, is_wav_file from models.tacotron2.taco_utils import load_wav_to_torch from utils.util import opt_get class WavfileDataset(torch.utils.data.Dataset): def __init__(self, opt): path = opt['path'] cache_path = opt['cache_path'] # Will fail when multiple paths specified, must be specified in this case. if not isinstance(path, list): path = [path] if os.path.exists(cache_path): self.audiopaths = torch.load(cache_path) else: print("Building cache..") self.audiopaths = [] for p in path: self.audiopaths.extend(find_files_of_type('img', p, qualifier=is_wav_file)[0]) torch.save(self.audiopaths, cache_path) # Parse options self.sampling_rate = opt_get(opt, ['sampling_rate'], 24000) self.pad_to = opt_get(opt, ['pad_to_seconds'], None) if self.pad_to is not None: self.pad_to *= self.sampling_rate self.augment = opt_get(opt, ['do_augmentation'], False) if self.augment: # The "window size" for the clips produced in seconds. self.window = 2 * self.sampling_rate self.augmentor = WavAugmentor() def get_audio_for_index(self, index): audiopath = self.audiopaths[index] audio, sampling_rate = load_wav_to_torch(audiopath) if sampling_rate != self.sampling_rate: if sampling_rate < self.sampling_rate: print(f'{audiopath} has a sample rate of {sampling_rate} which is lower than the requested sample rate of {self.sampling_rate}. This is not a good idea.') audio = torch.nn.functional.interpolate(audio.unsqueeze(0).unsqueeze(1), scale_factor=self.sampling_rate/sampling_rate, mode='nearest', recompute_scale_factor=False).squeeze() # Check some assumptions about audio range. This should be automatically fixed in load_wav_to_torch, but might not be in some edge cases, where we should squawk. # '2' is arbitrarily chosen since it seems like audio will often "overdrive" the [-1,1] bounds. if torch.any(audio > 2) or not torch.any(audio < 0): print(f"Error with {audiopath}. Max={audio.max()} min={audio.min()}") audio.clip_(-1, 1) audio = audio.unsqueeze(0) return audio, audiopath def __getitem__(self, index): success = False # This "success" thing is a hack: This dataset is randomly failing for no apparent good reason and I don't know why. # Symptoms are it complaining about being unable to read a nonsensical filename that is clearly corrupted. Memory corruption? I don't know.. while not success: try: # Split audio_norm into two tensors of equal size. audio_norm, filename = self.get_audio_for_index(index) success = True except: print(f"Failed to load {index} {self.audiopaths[index]}") if self.augment: if audio_norm.shape[1] < self.window * 2: # Try next index. This adds a bit of bias and ideally we'd filter the dataset rather than do this. return self[(index + 1) % len(self)] j = random.randint(0, audio_norm.shape[1] - self.window) clip1 = audio_norm[:, j:j+self.window] if self.augment: clip1 = self.augmentor.augment(clip1, self.sampling_rate) j = random.randint(0, audio_norm.shape[1]-self.window) clip2 = audio_norm[:, j:j+self.window] if self.augment: clip2 = self.augmentor.augment(clip2, self.sampling_rate) # This is required when training to make sure all clips align. if self.pad_to is not None: if audio_norm.shape[-1] <= self.pad_to: audio_norm = torch.nn.functional.pad(audio_norm, (0, self.pad_to - audio_norm.shape[-1])) else: #print(f"Warning! Truncating clip {filename} from {audio_norm.shape[-1]} to {self.pad_to}") audio_norm = audio_norm[:, :self.pad_to] output = { 'clip': audio_norm, 'path': filename, } if self.augment: output.update({ 'clip1': clip1[0, :].unsqueeze(0), 'clip2': clip2[0, :].unsqueeze(0), }) return output def __len__(self): return len(self.audiopaths) if __name__ == '__main__': params = { 'mode': 'wavfile_clips', 'path': ['E:\\audio\\books-split', 'E:\\audio\\LibriTTS\\train-clean-360', 'D:\\data\\audio\\podcasts-split'], 'cache_path': 'E:\\audio\\clips-cache.pth', 'sampling_rate': 22050, 'pad_to_seconds': 5, 'phase': 'train', 'n_workers': 0, 'batch_size': 16, 'do_augmentation': False } from data import create_dataset, create_dataloader, util ds = create_dataset(params) dl = create_dataloader(ds, params) i = 0 for b in tqdm(dl): for b_ in range(16): pass #torchaudio.save(f'{i}_clip1_{b_}.wav', b['clip1'][b_], ds.sampling_rate) #torchaudio.save(f'{i}_clip2_{b_}.wav', b['clip2'][b_], ds.sampling_rate) #i += 1