Refactor TTS Android code to support jieba for Chinese TTS models (#800)

scripts/apk/build-apk-tts-engine.sh.in

@@ -61,6 +61,11 @@ sed -i.bak s/"lang = null"/"lang = \"$lang_iso_639_3\""/ ./TtsEngine.kt
   sed -i.bak s%"ruleFsts = null"%"ruleFars = \"$rule_fars\""% ./TtsEngine.kt
 {% endif %}
 
+{% if tts_model.dict_dir %}
+  dict_dir={{ tts_model.dict_dir }}
+  sed -i.bak s%"dictDir = null"%"dictDir = \"$dict_dir\""% ./TtsEngine.kt
+{% endif %}
+
 {% if tts_model.data_dir %}
   data_dir={{ tts_model.data_dir }}
   sed -i.bak s%"dataDir = null"%"dataDir = \"$data_dir\""% ./TtsEngine.kt

scripts/apk/build-apk-tts.sh.in

@@ -59,6 +59,11 @@ sed -i.bak s/"modelName = null"/"modelName = \"$model_name\""/ ./MainActivity.kt
   sed -i.bak s%"ruleFsts = null"%"ruleFars = \"$rule_fars\""% ./MainActivity.kt
 {% endif %}
 
+{% if tts_model.dict_dir %}
+  dict_dir={{ tts_model.dict_dir }}
+  sed -i.bak s%"dictDir = null"%"dictDir = \"$dict_dir\""% ./MainActivity.kt
+{% endif %}
+
 {% if tts_model.data_dir %}
   data_dir={{ tts_model.data_dir }}
   sed -i.bak s%"dataDir = null"%"dataDir = \"$data_dir\""% ./MainActivity.kt

scripts/apk/generate-tts-apk-script.py

@@ -35,6 +35,7 @@ class TtsModel:
     rule_fsts: Optional[List[str]] = None
     rule_fars: Optional[List[str]] = None
     data_dir: Optional[str] = None
+    dict_dir: Optional[str] = None
     is_char: bool = False
     lang_iso_639_3: str = ""
 
@@ -326,8 +327,14 @@ def get_vits_models() -> List[TtsModel]:
     rule_fsts = ["phone.fst", "date.fst", "number.fst", "new_heteronym.fst"]
     for m in chinese_models:
         s = [f"{m.model_dir}/{r}" for r in rule_fsts]
+        if "vits-zh-hf" in m.model_dir:
+            s = s[:-1]
+            m.dict_dir = m.model_dir + "/dict"
+
         m.rule_fsts = ",".join(s)
-        m.rule_fars = f"{m.model_dir}/rule.far"
+
+        if "vits-zh-hf" not in m.model_dir:
+            m.rule_fars = f"{m.model_dir}/rule.far"
 
     all_models = chinese_models + [
         TtsModel(