Remove collating from paired_voice_audio_dataset

This will now be done at the model level, which is more efficient

codes/data/audio/paired_voice_audio_dataset.py

@@ -89,9 +89,6 @@ class TextWavLoader(torch.utils.data.Dataset):
         random.shuffle(self.audiopaths_and_text)
         self.max_wav_len = opt_get(hparams, ['max_wav_length'], None)
         self.max_text_len = opt_get(hparams, ['max_text_length'], None)
-        # If needs_collate=False, all outputs will be aligned and padded at maximum length.
-        self.needs_collate = opt_get(hparams, ['needs_collate'], True)
-        if not self.needs_collate:
         assert self.max_wav_len is not None and self.max_text_len is not None
         self.use_bpe_tokenizer = opt_get(hparams, ['use_bpe_tokenizer'], True)
         if self.use_bpe_tokenizer:
@@ -137,7 +134,6 @@ class TextWavLoader(torch.utils.data.Dataset):
             return self[rv]
         orig_output = wav.shape[-1]
         orig_text_len = tseq.shape[0]
-        if not self.needs_collate:
         if wav.shape[-1] != self.max_wav_len:
             wav = F.pad(wav, (0, self.max_wav_len - wav.shape[-1]))
         if tseq.shape[0] != self.max_text_len:
@@ -153,67 +149,11 @@ class TextWavLoader(torch.utils.data.Dataset):
         if self.load_conditioning:
             res['conditioning'] = cond
         return res
-        return tseq, wav, path, text, cond
 
     def __len__(self):
         return len(self.audiopaths_and_text)
 
 
-class TextMelCollate():
-    """ Zero-pads model inputs and targets based on number of frames per step
-    """
-    def __call__(self, batch):
-        """Collate's training batch from normalized text and wav
-        PARAMS
-        ------
-        batch: [text_normalized, wav, filename, text]
-        """
-        # Right zero-pad all one-hot text sequences to max input length
-        input_lengths, ids_sorted_decreasing = torch.sort(
-            torch.LongTensor([len(x[0]) for x in batch]),
-            dim=0, descending=True)
-        max_input_len = input_lengths[0]
-
-        text_padded = torch.LongTensor(len(batch), max_input_len)
-        text_padded.zero_()
-        filenames = []
-        real_text = []
-        conds = []
-        for i in range(len(ids_sorted_decreasing)):
-            text = batch[ids_sorted_decreasing[i]][0]
-            text_padded[i, :text.size(0)] = text
-            filenames.append(batch[ids_sorted_decreasing[i]][2])
-            real_text.append(batch[ids_sorted_decreasing[i]][3])
-            c = batch[ids_sorted_decreasing[i]][4]
-            if c is not None:
-                conds.append(c)
-
-        # Right zero-pad wav
-        num_wavs = batch[0][1].size(0)
-        max_target_len = max([x[1].size(1) for x in batch])
-
-        # include mel padded and gate padded
-        wav_padded = torch.FloatTensor(len(batch), num_wavs, max_target_len)
-        wav_padded.zero_()
-        output_lengths = torch.LongTensor(len(batch))
-        for i in range(len(ids_sorted_decreasing)):
-            wav = batch[ids_sorted_decreasing[i]][1]
-            wav_padded[i, :, :wav.size(1)] = wav
-            output_lengths[i] = wav.size(1)
-
-        res = {
-            'padded_text': text_padded,
-            'text_lengths': input_lengths,
-            'wav': wav_padded,
-            'wav_lengths': output_lengths,
-            'filenames': filenames,
-            'real_text': real_text,
-        }
-        if len(conds) > 0:
-            res['conditioning'] = torch.stack(conds)
-        return res
-
-
 if __name__ == '__main__':
     batch_sz = 8
     params = {
@@ -223,7 +163,6 @@ if __name__ == '__main__':
         'phase': 'train',
         'n_workers': 0,
         'batch_size': batch_sz,
-        'needs_collate': True,
         'max_wav_length': 255995,
         'max_text_length': 200,
         'sample_rate': 22050,