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| import sys | |
| import numpy as np | |
| import torch | |
| import logging | |
| import pandas as pd | |
| import glob | |
| logger = logging.getLogger(f'main.{__name__}') | |
| sys.path.insert(0, '.') # nopep8 | |
| class JoinManifestSpecs(torch.utils.data.Dataset): | |
| def __init__(self, split, spec_dir_path, mel_num=None, spec_crop_len=None,drop=0,**kwargs): | |
| super().__init__() | |
| self.split = split | |
| self.batch_max_length = spec_crop_len | |
| self.batch_min_length = 50 | |
| self.drop = drop | |
| self.mel_num = mel_num | |
| manifest_files = [] | |
| for dir_path in spec_dir_path.split(','): | |
| manifest_files += glob.glob(f'{dir_path}/*.tsv') | |
| df_list = [pd.read_csv(manifest,sep='\t') for manifest in manifest_files] | |
| df = pd.concat(df_list,ignore_index=True) | |
| if split == 'train': | |
| self.dataset = df.iloc[100:] | |
| elif split == 'valid' or split == 'val': | |
| self.dataset = df.iloc[:100] | |
| elif split == 'test': | |
| df = self.add_name_num(df) | |
| self.dataset = df | |
| else: | |
| raise ValueError(f'Unknown split {split}') | |
| self.dataset.reset_index(inplace=True) | |
| print('dataset len:', len(self.dataset)) | |
| def add_name_num(self,df): | |
| """each file may have different caption, we add num to filename to identify each audio-caption pair""" | |
| name_count_dict = {} | |
| change = [] | |
| for t in df.itertuples(): | |
| name = getattr(t,'name') | |
| if name in name_count_dict: | |
| name_count_dict[name] += 1 | |
| else: | |
| name_count_dict[name] = 0 | |
| change.append((t[0],name_count_dict[name])) | |
| for t in change: | |
| df.loc[t[0],'name'] = df.loc[t[0],'name'] + f'_{t[1]}' | |
| return df | |
| def __getitem__(self, idx): | |
| data = self.dataset.iloc[idx] | |
| item = {} | |
| try: | |
| spec = np.load(data['mel_path']) # mel spec [80, 624] | |
| except: | |
| mel_path = data['mel_path'] | |
| print(f'corrupted:{mel_path}') | |
| spec = np.zeros((self.mel_num,self.batch_max_length)).astype(np.float32) | |
| if spec.shape[1] <= self.batch_max_length: | |
| spec = np.pad(spec, ((0, 0), (0, self.batch_max_length - spec.shape[1]))) # [80, 624] | |
| item['image'] = spec[:self.mel_num,:self.batch_max_length] | |
| p = np.random.uniform(0,1) | |
| if p > self.drop: | |
| item["caption"] = {"ori_caption":data['ori_cap'],"struct_caption":data['caption']} | |
| else: | |
| item["caption"] = {"ori_caption":"","struct_caption":""} | |
| if self.split == 'test': | |
| item['f_name'] = data['name'] | |
| return item | |
| def __len__(self): | |
| return len(self.dataset) | |
| class JoinSpecsTrain(JoinManifestSpecs): | |
| def __init__(self, specs_dataset_cfg): | |
| super().__init__('train', **specs_dataset_cfg) | |
| class JoinSpecsValidation(JoinManifestSpecs): | |
| def __init__(self, specs_dataset_cfg): | |
| super().__init__('valid', **specs_dataset_cfg) | |
| class JoinSpecsTest(JoinManifestSpecs): | |
| def __init__(self, specs_dataset_cfg): | |
| super().__init__('test', **specs_dataset_cfg) | |