fix(dataset): skip files where audio length can't be computed

Avoids hard failures when the audio can't be decoded.

TTS/tts/datasets/dataset.py

@@ -3,7 +3,7 @@ import collections
 import logging
 import os
 import random
-from typing import Dict, List, Union
+from typing import Any, Dict, List, Union
 
 import numpy as np
 import torch
@@ -46,15 +46,21 @@ def string2filename(string):
     return filename
 
 
-def get_audio_size(audiopath) -> int:
+def get_audio_size(audiopath: Union[str, os.PathLike[Any]]) -> int:
     """Return the number of samples in the audio file."""
+    if not isinstance(audiopath, str):
+        audiopath = str(audiopath)
     extension = audiopath.rpartition(".")[-1].lower()
     if extension not in {"mp3", "wav", "flac"}:
         raise RuntimeError(
             f"The audio format {extension} is not supported, please convert the audio files to mp3, flac, or wav format!"
         )
 
-    return torchaudio.info(audiopath).num_frames
+    try:
+        return torchaudio.info(audiopath).num_frames
+    except RuntimeError as e:
+        msg = f"Failed to decode {audiopath}"
+        raise RuntimeError(msg) from e
 
 
 class TTSDataset(Dataset):
@@ -186,7 +192,11 @@ class TTSDataset(Dataset):
         lens = []
         for item in self.samples:
             _, wav_file, *_ = _parse_sample(item)
-            audio_len = get_audio_size(wav_file)
+            try:
+                audio_len = get_audio_size(wav_file)
+            except RuntimeError:
+                logger.warn(f"Failed to compute length for {item['audio_file']}")
+                audio_len = 0
             lens.append(audio_len)
         return lens
 
@@ -304,7 +314,11 @@ class TTSDataset(Dataset):
     def _compute_lengths(samples):
         new_samples = []
         for item in samples:
-            audio_length = get_audio_size(item["audio_file"])
+            try:
+                audio_length = get_audio_size(item["audio_file"])
+            except RuntimeError:
+                logger.warn(f"Failed to compute length, skipping {item['audio_file']}")
+                continue
             text_lenght = len(item["text"])
             item["audio_length"] = audio_length
             item["text_length"] = text_lenght