add support for TongyiQwen tts (#2311)

### What problem does this PR solve?

add support for TongyiQwen tts
#1853

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

---------

Co-authored-by: Zhedong Cen <cenzhedong2@126.com>

conf/llm_factories.json

@@ -104,18 +104,24 @@
                     "max_tokens": 2048,
                     "model_type": "embedding"
                 },
+                {
+                    "llm_name": "sambert-zhide-v1",
+                    "tags": "TTS",
+                    "max_tokens": 2048,
+                    "model_type": "tts"
+                },
+                {
+                    "llm_name": "sambert-zhiru-v1",
+                    "tags": "TTS",
+                    "max_tokens": 2048,
+                    "model_type": "tts"
+                },
                 {
                     "llm_name": "text-embedding-v3",
                     "tags": "TEXT EMBEDDING,8K",
                     "max_tokens": 8192,
                     "model_type": "embedding"
                 },
-                {
-                    "llm_name": "paraformer-realtime-8k-v1",
-                    "tags": "SPEECH2TEXT",
-                    "max_tokens": 26214400,
-                    "model_type": "speech2text"
-                },
                 {
                     "llm_name": "qwen-vl-max",
                     "tags": "LLM,CHAT,IMAGE2TEXT",

rag/llm/__init__.py

@@ -137,5 +137,6 @@ Seq2txtModel = {
 }
 
 TTSModel = {
-    "Fish Audio": FishAudioTTS
+    "Fish Audio": FishAudioTTS,
+    "Tongyi-Qianwen": QwenTTS
 }

rag/llm/tts_model.py

@@ -22,7 +22,7 @@ from pydantic import BaseModel, conint
 from rag.utils import num_tokens_from_string
 import json
 import re
-
+import time
 class ServeReferenceAudio(BaseModel):
     audio: bytes
     text: str
@@ -96,3 +96,61 @@ class FishAudioTTS(Base):
 
             except httpx.HTTPStatusError as e:
                 raise RuntimeError(f"**ERROR**: {e}")
+
+
+class QwenTTS(Base):
+    def __init__(self, key, model_name, base_url=""):
+        import dashscope
+        
+        self.model_name = model_name
+        dashscope.api_key = key
+
+    def tts(self, text):
+        from dashscope.api_entities.dashscope_response import SpeechSynthesisResponse
+        from dashscope.audio.tts import ResultCallback, SpeechSynthesizer, SpeechSynthesisResult
+        from collections import deque
+        
+        class Callback(ResultCallback):
+            def __init__(self) -> None:
+                self.dque = deque()
+                   
+            def _run(self):
+                while True:
+                    if not self.dque:
+                        time.sleep(0)
+                        continue
+                    val = self.dque.popleft()
+                    if val:
+                        yield val
+                    else:
+                        break
+
+            def on_open(self):
+                pass
+
+            def on_complete(self):
+                self.dque.append(None)
+
+            def on_error(self, response: SpeechSynthesisResponse):
+                raise RuntimeError(str(response))
+
+            def on_close(self):
+                pass
+
+            def on_event(self, result: SpeechSynthesisResult):
+                if result.get_audio_frame() is not None:
+                    self.dque.append(result.get_audio_frame())
+
+        text = self.normalize_text(text)
+        callback = Callback()
+        SpeechSynthesizer.call(model=self.model_name,
+                                text=text,
+                                callback=callback,
+                                format="mp3")
+        try:
+            for data in callback._run():
+                yield data
+            yield num_tokens_from_string(text)
+            
+        except Exception as e:
+            raise RuntimeError(f"**ERROR**: {e}")