void* error_user_data;
tts_default_voice_changed_cb default_voice_changed_cb;
void* default_voice_changed_user_data;
+ tts_engine_changed_cb engine_changed_cb;
+ void* engine_changed_user_data;
tts_supported_voice_cb supported_voice_cb;
void* supported_voice_user_data;
/* options */
char* credential;
bool credential_needed;
+ bool internal;
} tts_client_s;
int tts_client_new(tts_h* tts);