Fix AttributeError when prompt_cache['refer_spec'][0] is a tuple (#2428)

Co-authored-by: tzrain <tz_rain@foxmail.com>

GPT_SoVITS/TTS_infer_pack/TTS.py

@@ -1407,7 +1407,10 @@ class TTS:
     ):
         prompt_semantic_tokens = self.prompt_cache["prompt_semantic"].unsqueeze(0).unsqueeze(0).to(self.configs.device)
         prompt_phones = torch.LongTensor(self.prompt_cache["phones"]).unsqueeze(0).to(self.configs.device)
-        refer_audio_spec = self.prompt_cache["refer_spec"][0].to(dtype=self.precision, device=self.configs.device)
+        raw_entry = self.prompt_cache["refer_spec"][0]
+        if isinstance(raw_entry, tuple):
+            raw_entry = raw_entry[0]
+        refer_audio_spec = raw_entry.to(dtype=self.precision,device=self.configs.device)
 
         fea_ref, ge = self.vits_model.decode_encp(prompt_semantic_tokens, prompt_phones, refer_audio_spec)
         ref_audio: torch.Tensor = self.prompt_cache["raw_audio"]
@@ -1474,7 +1477,10 @@ class TTS:
     ) -> List[torch.Tensor]:
         prompt_semantic_tokens = self.prompt_cache["prompt_semantic"].unsqueeze(0).unsqueeze(0).to(self.configs.device)
         prompt_phones = torch.LongTensor(self.prompt_cache["phones"]).unsqueeze(0).to(self.configs.device)
-        refer_audio_spec = self.prompt_cache["refer_spec"][0].to(dtype=self.precision, device=self.configs.device)
+        raw_entry = self.prompt_cache["refer_spec"][0]
+        if isinstance(raw_entry, tuple):
+            raw_entry = raw_entry[0]
+        refer_audio_spec = raw_entry.to(dtype=self.precision,device=self.configs.device)
 
         fea_ref, ge = self.vits_model.decode_encp(prompt_semantic_tokens, prompt_phones, refer_audio_spec)
         ref_audio: torch.Tensor = self.prompt_cache["raw_audio"]