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dataset.py
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dataset.py
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from torch.utils import data
import torch
import glob
import os
from os.path import join, basename, dirname, split, exists
import numpy as np
import json
import csv
import random
from torch.utils.data import DataLoader
from collections import defaultdict
from prosodic_encoder.ppgvc_f0.ppgvc_lf0 import get_cont_lf0 as process_ppgvc_f0
def get_dataloader(config):
train_dataset = Dataset(config, config['train_meta'], config['train_set'])
dev_dataset = Dataset(config, config['dev_meta'], config['dev_set'])
if config['ngpu'] >1:
shuffle = False
train_sampler = torch.utils.data.distributed.DistributedSampler(
train_dataset)
dev_sampler = torch.utils.data.distributed.DistributedSampler(
dev_dataset)
else:
shuffle = True
train_sampler = None
dev_sampler = None
train_loader = DataLoader(
train_dataset,
batch_size = config['batch_size'],
shuffle = shuffle,
collate_fn = train_dataset.collate_fn,
num_workers = config['num_workers'],
sampler = train_sampler
)
dev_loader = DataLoader(
dev_dataset,
batch_size = config['batch_size'],
shuffle = False,
collate_fn = dev_dataset.collate_fn,
num_workers = config['num_workers'],
sampler = dev_sampler
)
return train_loader, dev_loader
def pad_1D(inputs, length, PAD = 0):
def pad_data(x, length, PAD):
x_padded = np.pad(
x, (0, length - x.shape[0]), mode = 'constant', constant_values = PAD
)
return x_padded
max_len = max(len(x) for x in inputs)
padded = np.stack([pad_data(x, max_len, PAD) for x in inputs])
return padded
def pad_2D(inputs, maxlen = None):
def pad(x, max_len):
PAD = 0
if np.shape(x)[0] > max_len:
raise ValueError(f'shape {x.shape[0]} excceed max_len {max_len}')
s = np.shape(x)[1]
x_padded = np.pad(
x, (0, max_len - x.shape[0]), mode = 'constant', constant_values = PAD
)
return x_padded[:,:s]
if maxlen:
output = np.stack([pad(x,maxlen) for x in inputs])
else:
max_len = max([x.shape[0] for x in inputs])
output = np.stack([pad(x, max_len) for x in inputs])
return output
class Dataset(data.Dataset):
def __init__(self, config, metadata_csv, split):
super().__init__()
self.metadata = []
# read metadata
with open(metadata_csv) as f:
reader = csv.DictReader(f, delimiter = ',')
for row in reader:
# remove utterances that are too long for training.
if config['rm_long_utt']:
_duration = row['duration']
if float(_duration) < config['max_utt_duration']:
self.metadata.append(row)
f.close()
print(f'{split} data samples {len(self.metadata)}')
self.batch_size = config['batch_size']
self.drop_last = config['drop_last']
self.sort = config['sort']
# feature dirs
self.mel_dir = os.path.join(config['dump_dir'], config['dataset'], split, config['mel_type'])
self.ling_enc = config['ling_enc']
self.ling_rep_dir = os.path.join(config['dump_dir'], config['dataset'], split, self.ling_enc)
self.spk_enc = config['spk_enc']
self.spk_emb_dir = os.path.join(config['dump_dir'], config['dataset'], split, self.spk_enc)
self.pros_enc = config['pros_enc'] #e.g. ppgvc_f0
self.pros_rep_dir = os.path.join(config['dump_dir'], config['dataset'], split, self.pros_enc)
self.pros_rep_process_func = f'process_{self.pros_enc}'
# frames per step (only work for TacoMOL)
self.frames_per_step = config['frames_per_step'] if 'frames_per_step' in config else 1
def __len__(self):
return len(self.metadata)
def __getitem__(self, idx):
row = self.metadata[idx]
ID = row['ID']
spk = row['spk']
# feature path
mel_path = os.path.join(self.mel_dir, spk, ID + '.npy')
ling_rep_path = os.path.join(self.ling_rep_dir, spk, ID+'.npy')
spk_emb_path = os.path.join(self.spk_emb_dir, spk, ID+'.npy')
pros_rep_path = os.path.join(self.pros_rep_dir, spk, ID + '.npy')
assert os.path.exists(mel_path), f"{mel_path}"
assert os.path.exists(ling_rep_path), f'{ling_rep_path}'
assert os.path.exists(spk_emb_path), f'{spk_emb_path}'
assert os.path.exists(pros_rep_path), f'{pros_rep_path}'
# load feature
mel = np.load(mel_path)
mel_duration = mel.shape[0]
ling_rep = np.load(ling_rep_path)
ling_duration = ling_rep.shape[0]
spk_emb = np.load(spk_emb_path)
pros_rep = np.load(pros_rep_path)
pros_rep = eval(self.pros_rep_process_func)(pros_rep)
pros_duration = pros_rep.shape[0]
# up_sample ling_rep to 10hz, in case some ling_rep are 50hz or 25hz.
factor = int(round(mel_duration / ling_duration))
repeated_ling_rep = np.repeat(ling_rep, factor, axis=1)
ling_rep = np.reshape(repeated_ling_rep, [ling_duration * factor, ling_rep.shape[1]])
ling_duration = ling_rep.shape[0]
# match length between mel and ling_rep
if mel_duration > ling_duration :
pad_vec = np.expand_dims(ling_rep[-1,:], axis = 0)
ling_rep = np.concatenate((ling_rep, np.repeat(pad_vec, mel_duration - ling_duration, 0)),0)
elif mel_duration < ling_duration:
ling_rep = ling_rep[:mel_duration,:]
# match length between mel and pros_rep
if mel_duration > pros_duration:
pad_vec = np.expand_dims(pros_rep[-1,:],axis = 0)
pros_rep = np.concatenate((pros_rep, np.repeat(pad_vec, mel_duration - pros_duration, 0)),0)
elif mel_duration < pros_duration:
pros_rep = pros_rep[:mel_duration,:]
return (mel, ling_rep, pros_rep, spk_emb, mel_duration)
def collate_fn(self, data):
# sort in batch
batch_size = len(data)
if self.sort:
len_arr = np.array([d[-1] for d in data])
idx_arr = np.argsort(~len_arr)
else:
idx_arr = np.arange(batch_size)
mel = [ data[id][0] for id in idx_arr]
ling_rep = [ data[id][1] for id in idx_arr]
pros_rep = [ data[id][2] for id in idx_arr]
spk_emb = [ data[id][3] for id in idx_arr]
length = [ data[id][4] for id in idx_arr ]
max_len = max(length)
if max_len % self.frames_per_step != 0:
max_len += (self.frames_per_step - max_len % self.frames_per_step)
padded_mel = torch.FloatTensor(pad_2D(mel, max_len))
padded_ling_rep = torch.FloatTensor(pad_2D(ling_rep, max_len))
padded_pros_rep = torch.FloatTensor(pad_2D(pros_rep, max_len))
spk_emb_tensor = torch.FloatTensor(np.array(spk_emb)).unsqueeze(1)
length = torch.LongTensor(np.array(length))
output = (padded_mel, padded_ling_rep, padded_pros_rep, spk_emb_tensor, length, max_len)
return output