int tts_dbus_request_finalize(unsigned int uid);
-int tts_dbus_request_set_mode(unsigned int uid, tts_mode_e mode);
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int tts_dbus_request_add_text(unsigned int uid, const char* text, const char* lang, int vctype, int speed, int uttid, const char* credential);
int tts_dbus_request_play(unsigned int uid, const char* credential);