+int __tts_cb_hello(int uid, int ret, int credential_needed)
+{
+ tts_client_s* client = tts_client_get_by_uid(uid);
+ if (NULL == client) {
+ SLOG(LOG_ERROR, TAG_TTSC, "Fail to get TTS client or ignore this uid(%d)", uid);
+ return TTS_ERROR_OPERATION_FAILED;
+ }
+
+ if (g_hello_timer) {
+ ecore_timer_del(g_hello_timer);
+ g_hello_timer = NULL;
+ }
+
+ if (TTS_STATE_READY == client->current_state) {
+ SLOG(LOG_INFO, TAG_TTSC, "[INFO] tts client is already READY");
+ return TTS_ERROR_NONE;
+ }
+
+ if (TTS_ERROR_ENGINE_NOT_FOUND == ret) {
+ SLOG(LOG_ERROR, TAG_TTSC, "[ERROR] Fail to initialize : %s", __tts_get_error_code(ret));
+
+ client->reason = TTS_ERROR_ENGINE_NOT_FOUND;
+ client->utt_id = -1;
+
+ ecore_timer_add(0, __tts_notify_error, (void*)client->tts);
+ return TTS_ERROR_OPERATION_FAILED;
+
+ } else if (TTS_ERROR_PERMISSION_DENIED == ret) {
+ SLOG(LOG_ERROR, TAG_TTSC, "[ERROR] Fail to initialize : %s", __tts_get_error_code(ret));
+
+ client->reason = TTS_ERROR_PERMISSION_DENIED;
+ client->utt_id = -1;
+
+ ecore_timer_add(0, __tts_notify_error, (void*)client->tts);
+ return TTS_ERROR_PERMISSION_DENIED;
+
+ } else if (TTS_ERROR_NONE != ret) {
+ SLOG(LOG_WARN, TAG_TTSC, "[WARNING] Fail to connection. Retry to connect : %s", __tts_get_error_code(ret));
+ return TTS_ERROR_OPERATION_FAILED;
+
+ } else {
+ /* success to connect tts-daemon */
+ client->credential_needed = credential_needed;
+ SLOG(LOG_ERROR, TAG_TTSC, "Supported options : credential(%s)", credential_needed ? "need" : "no need");
+ }
+
+ client->before_state = client->current_state;
+ client->current_state = TTS_STATE_READY;
+
+ ecore_timer_add(0.0, __tts_notify_state_changed, client->tts);
+
+ SLOG(LOG_DEBUG, TAG_TTSC, "@@@");
+ return TTS_ERROR_NONE;
+}
+
+static Eina_Bool __send_hello(void *data)
+{
+ tts_h tts = (tts_h)data;
+ tts_client_s* client = tts_client_get(tts);
+
+ /* check handle */
+ if (NULL == client) {
+ SLOG(LOG_ERROR, TAG_TTSC, "[ERROR] A handle is not valid");
+ g_hello_timer = NULL;
+ return EINA_FALSE;
+ }
+
+ /* check state */
+ if (client->current_state == TTS_STATE_READY) {
+ SLOG(LOG_ERROR, TAG_TTSC, "[INFO] TTS client has been already connected to tts service"); //LCOV_EXCL_LINE
+ SLOG(LOG_DEBUG, TAG_TTSC, "@@@");
+ g_hello_timer = NULL;
+ return EINA_FALSE;
+ }
+
+ /* Send hello */
+ int ret = tts_dbus_request_hello(client->uid);
+ if (0 != ret) {
+ SLOG(LOG_ERROR, TAG_TTSC, "[ERROR] Fail to request hello !!"); //LCOV_EXCL_LINE
+ } else {
+ SLOG(LOG_ERROR, TAG_TTSC, "@@@ Send Hello");
+ }
+
+ g_retry_cnt++;
+ if (TTS_HELLO_RETRY_COUNT == g_retry_cnt) {
+ SLOG(LOG_ERROR, TAG_TTSC, "[ERROR] Stop to send hello, retry count reaches the limit");
+ g_retry_cnt = 0;
+ return EINA_FALSE;
+ }
+
+ if (!g_hello_timer) {
+ SLOG(LOG_ERROR, TAG_TTSC, "@@@ Call checking Hello timer callback");
+ g_hello_timer = ecore_timer_add(0.5, __send_hello, tts);
+ return EINA_FALSE;
+ }
+ return EINA_TRUE;
+}
+