client/stt.c

   1 /*
   2 *  Copyright (c) 2011-2016 Samsung Electronics Co., Ltd All Rights Reserved
   3 *  Licensed under the Apache License, Version 2.0 (the "License");
   4 *  you may not use this file except in compliance with the License.
   5 *  You may obtain a copy of the License at
   6 *  http://www.apache.org/licenses/LICENSE-2.0
   7 *  Unless required by applicable law or agreed to in writing, software
   8 *  distributed under the License is distributed on an "AS IS" BASIS,
   9 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  10 *  See the License for the specific language governing permissions and
  11 *  limitations under the License.
  12 */
  13
  14 #include <aul.h>
  15 #include <cynara-client.h>
  16 #include <cynara-error.h>
  17 #include <cynara-session.h>
  18 #include <dirent.h>
  19 #include <Ecore.h>
  20 #include <fcntl.h>
  21 #include <pthread.h>
  22 #include <sys/stat.h>
  23 #include <sys/types.h>
  24 #include <sys/wait.h>
  25 #include <system_info.h>
  26 #include <unistd.h>
  27 #include <buxton2.h>
  28
  29 #include "stt.h"
  30 #include "stt_client.h"
  31 #include "stt_dbus.h"
  32 #include "stt_config_mgr.h"
  33 #include "stt_internal.h"
  34 #include "stt_main.h"
  35
  36
  37 static void __stt_notify_state_changed(void *data);
  38 static Eina_Bool __stt_notify_error(void *data);
  39
  40 static Ecore_Timer* g_connect_timer = NULL;
  41 static float g_volume_db = 0;
  42
  43 static int g_feature_enabled = -1;
  44
  45 static int g_privilege_allowed = -1;
  46 static int g_privilege_applaunch_allowed = -1;
  47
  48 static cynara *p_cynara = NULL;
  49
  50 static bool g_err_callback_status = false;
  51
  52 const char* stt_tag()
  53 {
  54         return "sttc";
  55 }
  56
  57 static int __stt_get_feature_enabled()
  58 {
  59         if (0 == g_feature_enabled) {
  60                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] STT NOT supported");
  61                 return STT_ERROR_NOT_SUPPORTED;
  62         } else if (-1 == g_feature_enabled) {
  63                 bool stt_supported = false;
  64                 bool mic_supported = false;
  65                 if (0 == system_info_get_platform_bool(STT_FEATURE_PATH, &stt_supported)) {
  66                         if (0 == system_info_get_platform_bool(STT_MIC_FEATURE_PATH, &mic_supported)) {
  67                                 if (false == stt_supported || false == mic_supported) {
  68                                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] STT NOT supported");
  69                                         g_feature_enabled = 0;
  70                                         return STT_ERROR_NOT_SUPPORTED;
  71                                 }
  72
  73                                 g_feature_enabled = 1;
  74                         } else {
  75                                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to get feature value");
  76                                 return STT_ERROR_NOT_SUPPORTED;
  77                         }
  78                 } else {
  79                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to get feature value");
  80                         return STT_ERROR_NOT_SUPPORTED;
  81                 }
  82         }
  83
  84         return 0;
  85 }
  86
  87 static int __check_privilege_initialize()
  88 {
  89         int ret = cynara_initialize(&p_cynara, NULL);
  90         if (CYNARA_API_SUCCESS != ret)
  91                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] fail to initialize");
  92
  93         return ret == CYNARA_API_SUCCESS;
  94 }
  95
  96 static bool __check_privilege(const char* uid, const char * privilege)
  97 {
  98         FILE *fp = NULL;
  99         char label_path[1024] = "/proc/self/attr/current";
 100         char smack_label[1024] = {'\0',};
 101
 102         if (!p_cynara) {
 103             return false;
 104         }
 105
 106         fp = fopen(label_path, "r");
 107         if (fp != NULL) {
 108             if (fread(smack_label, 1, sizeof(smack_label), fp) <= 0)
 109                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] fail to fread");
 110
 111             fclose(fp);
 112         }
 113
 114         pid_t pid = getpid();
 115         char *session = cynara_session_from_pid(pid);
 116         int ret = cynara_check(p_cynara, smack_label, session, uid, privilege);
 117         SLOG(LOG_DEBUG, TAG_STTC, "[Client]cynara_check returned %d(%s)", ret, (CYNARA_API_ACCESS_ALLOWED == ret) ? "Allowed" : "Denied");
 118         if (session) {
 119                 free(session);
 120                 session = NULL;
 121         }
 122
 123         if (ret != CYNARA_API_ACCESS_ALLOWED)
 124             return false;
 125         return true;
 126 }
 127
 128 static void __check_privilege_deinitialize()
 129 {
 130         if (p_cynara)
 131                 cynara_finish(p_cynara);
 132         p_cynara = NULL;
 133 }
 134
 135 static int __stt_check_privilege()
 136 {
 137         char uid[16];
 138
 139         if (0 == g_privilege_allowed) {
 140                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Permission is denied");
 141                 return STT_ERROR_PERMISSION_DENIED;
 142         } else if (-1 == g_privilege_allowed) {
 143                 if (false == __check_privilege_initialize()) {
 144                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] privilege initialize is failed");
 145                         return STT_ERROR_PERMISSION_DENIED;
 146                 }
 147                 snprintf(uid, 16, "%d", getuid());
 148                 if (false == __check_privilege(uid, STT_PRIVILEGE_RECORDER)) {
 149                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Permission is denied");
 150                         g_privilege_allowed = 0;
 151                         __check_privilege_deinitialize();
 152                         return STT_ERROR_PERMISSION_DENIED;
 153                 }
 154                 __check_privilege_deinitialize();
 155         }
 156
 157         g_privilege_allowed = 1;
 158         return STT_ERROR_NONE;
 159 }
 160
 161 static int __stt_check_privilege_for_applaunch()
 162 {
 163         char uid[16];
 164
 165         if (0 == g_privilege_applaunch_allowed) {
 166                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Permission for applaunch is denied");
 167                 return STT_ERROR_PERMISSION_DENIED;
 168         } else if (-1 == g_privilege_applaunch_allowed) {
 169                 if (false == __check_privilege_initialize()) {
 170                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] privilege initialize is failed (applaunch)");
 171                         return STT_ERROR_PERMISSION_DENIED;
 172                 }
 173                 snprintf(uid, 16, "%d", getuid());
 174                 if (false == __check_privilege(uid, STT_PRIVILEGE_APPLAUNCH)) {
 175                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Permission is denied : appmanager.launch");
 176                         g_privilege_applaunch_allowed = 0;
 177                         __check_privilege_deinitialize();
 178                         return STT_ERROR_PERMISSION_DENIED;
 179                 }
 180                 __check_privilege_deinitialize();
 181         }
 182
 183         g_privilege_applaunch_allowed = 1;
 184         return STT_ERROR_NONE;
 185 }
 186
 187 static const char* __stt_get_error_code(stt_error_e err)
 188 {
 189         switch (err) {
 190         case STT_ERROR_NONE:                    return "STT_ERROR_NONE";
 191         case STT_ERROR_OUT_OF_MEMORY:           return "STT_ERROR_OUT_OF_MEMORY";
 192         case STT_ERROR_IO_ERROR:                return "STT_ERROR_IO_ERROR";
 193         case STT_ERROR_INVALID_PARAMETER:       return "STT_ERROR_INVALID_PARAMETER";
 194         case STT_ERROR_TIMED_OUT:               return "STT_ERROR_TIMED_OUT";
 195         case STT_ERROR_RECORDER_BUSY:           return "STT_ERROR_RECORDER_BUSY";
 196         case STT_ERROR_OUT_OF_NETWORK:          return "STT_ERROR_OUT_OF_NETWORK";
 197         case STT_ERROR_PERMISSION_DENIED:       return "STT_ERROR_PERMISSION_DENIED";
 198         case STT_ERROR_NOT_SUPPORTED:           return "STT_ERROR_NOT_SUPPORTED";
 199         case STT_ERROR_INVALID_STATE:           return "STT_ERROR_INVALID_STATE";
 200         case STT_ERROR_INVALID_LANGUAGE:        return "STT_ERROR_INVALID_LANGUAGE";
 201         case STT_ERROR_ENGINE_NOT_FOUND:        return "STT_ERROR_ENGINE_NOT_FOUND";
 202         case STT_ERROR_OPERATION_FAILED:        return "STT_ERROR_OPERATION_FAILED";
 203         case STT_ERROR_NOT_SUPPORTED_FEATURE:   return "STT_ERROR_NOT_SUPPORTED_FEATURE";
 204         case STT_ERROR_SERVICE_RESET:           return "STT_ERROR_SERVICE_RESET";
 205         default:
 206                 return "Invalid error code";
 207         }
 208 }
 209
 210 static int __stt_convert_config_error_code(stt_config_error_e code)
 211 {
 212         if (code == STT_CONFIG_ERROR_NONE)                      return STT_ERROR_NONE;
 213         if (code == STT_CONFIG_ERROR_OUT_OF_MEMORY)             return STT_ERROR_OUT_OF_MEMORY;
 214         if (code == STT_CONFIG_ERROR_IO_ERROR)                  return STT_ERROR_IO_ERROR;
 215         if (code == STT_CONFIG_ERROR_INVALID_PARAMETER)         return STT_ERROR_INVALID_PARAMETER;
 216         if (code == STT_CONFIG_ERROR_PERMISSION_DENIED)         return STT_ERROR_PERMISSION_DENIED;
 217         if (code == STT_CONFIG_ERROR_NOT_SUPPORTED)             return STT_ERROR_NOT_SUPPORTED;
 218         if (code == STT_CONFIG_ERROR_INVALID_STATE)             return STT_ERROR_INVALID_STATE;
 219         if (code == STT_CONFIG_ERROR_INVALID_LANGUAGE)          return STT_ERROR_INVALID_LANGUAGE;
 220         if (code == STT_CONFIG_ERROR_ENGINE_NOT_FOUND)          return STT_ERROR_ENGINE_NOT_FOUND;
 221         if (code == STT_CONFIG_ERROR_OPERATION_FAILED)          return STT_ERROR_OPERATION_FAILED;
 222
 223         return code;
 224 }
 225
 226 void __stt_config_lang_changed_cb(const char* before_language, const char* current_language, void* user_data)
 227 {
 228         SLOG(LOG_DEBUG, TAG_STTC, "Language changed : Before lang(%s) Current lang(%s)",
 229                 before_language, current_language);
 230
 231         if (0 == strcmp(before_language, current_language)) {
 232                 return;
 233         }
 234
 235         GList* client_list = NULL;
 236         client_list = stt_client_get_client_list();
 237
 238         GList *iter = NULL;
 239         stt_client_s *data = NULL;
 240
 241         if (g_list_length(client_list) > 0) {
 242                 /* Get a first item */
 243                 iter = g_list_first(client_list);
 244
 245                 while (NULL != iter) {
 246                         data = iter->data;
 247                         if (NULL != data->default_lang_changed_cb) {
 248                                 SLOG(LOG_DEBUG, TAG_STTC, "Call default language changed callback : uid(%d)", data->uid);
 249                                 data->default_lang_changed_cb(data->stt, before_language, current_language,
 250                                         data->default_lang_changed_user_data);
 251                         }
 252
 253                         /* Next item */
 254                         iter = g_list_next(iter);
 255                 }
 256         }
 257
 258         return;
 259 }
 260
 261 static Eina_Bool __reconnect_by_engine_changed(void *data)
 262 {
 263         stt_h stt = (stt_h)data;
 264
 265         stt_client_s* client = stt_client_get(stt);
 266         if (NULL == client) {
 267                 SLOG(LOG_ERROR, TAG_STTC, "[WARNING] A handle is not valid");
 268                 return EINA_FALSE;
 269         }
 270
 271         if (STT_STATE_READY != client->current_state) {
 272                 usleep(10000);
 273                 return EINA_TRUE;
 274         }
 275
 276         int ret = stt_unprepare(stt);
 277         if (0 != ret) {
 278                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to prepare for setting a new engine... (%d)", ret);
 279         }
 280         ret = stt_prepare(stt);
 281         if (0 != ret) {
 282                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to prepare for setting a new engine... (%d)", ret);
 283         }
 284
 285         return EINA_FALSE;
 286 }
 287
 288 void __stt_config_engine_changed_cb(const char* engine_id, const char* setting, const char* language, bool support_silence, bool need_credential, void* user_data)
 289 {
 290         stt_h stt = (stt_h)user_data;
 291
 292         stt_client_s* client = stt_client_get(stt);
 293         if (NULL == client) {
 294                 SLOG(LOG_ERROR, TAG_STTC, "[WARNING] A handle is not valid");
 295                 return;
 296         }
 297
 298         if (NULL != engine_id)  SLOG(LOG_DEBUG, TAG_STTC, "Engine id(%s)", engine_id);
 299         if (NULL != setting)    SLOG(LOG_DEBUG, TAG_STTC, "Engine setting(%s)", setting);
 300         if (NULL != language)   SLOG(LOG_DEBUG, TAG_STTC, "Language(%s)", language);
 301         SLOG(LOG_DEBUG, TAG_STTC, "Silence(%s), Credential(%s)", support_silence ? "on" : "off", need_credential ? "need" : "no need");
 302
 303         /* When the default engine is changed, please unload the old engine and load the new one. */
 304         int ret = -1;
 305
 306         if (NULL == client->current_engine_id) {
 307                 if (STT_STATE_RECORDING == client->current_state || STT_STATE_PROCESSING == client->current_state) {
 308                         ret = stt_cancel(stt);
 309                         if (0 != ret) {
 310                                 SLOG(LOG_DEBUG, TAG_STTC, "[DEBUG] STT client canceling...");
 311                         }
 312
 313                         ecore_idler_add(__reconnect_by_engine_changed, (void*)stt);
 314                 } else if (STT_STATE_READY == client->current_state) {
 315                         ret = stt_unprepare(stt);
 316                         if (0 != ret) {
 317                                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to prepare for setting a new engine... (%d)", ret);
 318                         }
 319                         ret = stt_prepare(stt);
 320                         if (0 != ret) {
 321                                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to prepare for setting a new engine... (%d)", ret);
 322                         }
 323                 }
 324         }
 325
 326         /* call callback function */
 327         if (NULL != client->engine_changed_cb) {
 328                 client->engine_changed_cb(stt, engine_id, language, support_silence, need_credential, client->engine_changed_user_data);
 329         } else {
 330                 SLOG(LOG_WARN, TAG_STTC, "No registered callback function for engine change");
 331         }
 332         return;
 333 }
 334
 335 static int __stt_check_handle(stt_h stt, stt_client_s** client)
 336 {
 337         if (NULL == stt) {
 338                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Input handle is null");
 339                 return STT_ERROR_INVALID_PARAMETER;
 340         }
 341
 342         stt_client_s* temp = NULL;
 343         temp = stt_client_get(stt);
 344
 345         /* check handle */
 346         if (NULL == temp) {
 347                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] A handle is not available");
 348                 return STT_ERROR_INVALID_PARAMETER;
 349         }
 350         *client = temp;
 351
 352         return STT_ERROR_NONE;
 353 }
 354
 355 int stt_create(stt_h* stt)
 356 {
 357         if (0 != __stt_get_feature_enabled()) {
 358                 return STT_ERROR_NOT_SUPPORTED;
 359         }
 360         if (0 != __stt_check_privilege()) {
 361                 return STT_ERROR_PERMISSION_DENIED;
 362         }
 363
 364         SLOG(LOG_DEBUG, TAG_STTC, "===== Create STT");
 365
 366         if (NULL == stt) {
 367                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] A handle is null");
 368                 return STT_ERROR_INVALID_PARAMETER;
 369         }
 370
 371         if (0 == stt_client_get_size()) {
 372                 if (0 != stt_dbus_open_connection()) {
 373                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to open connection");
 374                         return STT_ERROR_OPERATION_FAILED;
 375                 }
 376         }
 377
 378         if (0 != stt_client_new(stt)) {
 379                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to create client!");
 380                 return STT_ERROR_OUT_OF_MEMORY;
 381         }
 382
 383         stt_client_s* client = stt_client_get(*stt);
 384         if (NULL == client) {
 385                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to create client");
 386                 stt_client_destroy(*stt);
 387                 return STT_ERROR_OPERATION_FAILED;
 388         }
 389
 390         int ret = stt_config_mgr_initialize(client->uid);
 391         ret = __stt_convert_config_error_code(ret);
 392         if (0 != ret) {
 393                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to init config manager : %s", __stt_get_error_code(ret));
 394                 stt_client_destroy(*stt);
 395                 return ret;
 396         }
 397
 398         ret = stt_config_mgr_set_callback(client->uid, __stt_config_engine_changed_cb, __stt_config_lang_changed_cb, NULL, client->stt);
 399         ret = __stt_convert_config_error_code(ret);
 400         if (0 != ret) {
 401                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to set config changed : %s", __stt_get_error_code(ret));
 402                 stt_client_destroy(*stt);
 403                 return ret;
 404         }
 405
 406         SLOG(LOG_DEBUG, TAG_STTC, "[Success] uid(%d)", (*stt)->handle);
 407
 408         SLOG(LOG_DEBUG, TAG_STTC, "=====");
 409         SLOG(LOG_DEBUG, TAG_STTC, " ");
 410
 411         return STT_ERROR_NONE;
 412 }
 413
 414 int stt_destroy(stt_h stt)
 415 {
 416         stt_client_s* client = NULL;
 417         if (0 != __stt_get_feature_enabled()) {
 418                 return STT_ERROR_NOT_SUPPORTED;
 419         }
 420         if (0 != __stt_check_privilege()) {
 421                 return STT_ERROR_PERMISSION_DENIED;
 422         }
 423         if (0 != __stt_check_handle(stt, &client)) {
 424                 return STT_ERROR_INVALID_PARAMETER;
 425         }
 426
 427         SLOG(LOG_DEBUG, TAG_STTC, "===== Destroy STT");
 428
 429         /* check used callback */
 430         if (0 != stt_client_get_use_callback(client)) {
 431                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Cannot destroy in Callback function");
 432                 return STT_ERROR_OPERATION_FAILED;
 433         }
 434
 435         stt_config_mgr_finalize(client->uid);
 436
 437         int ret = -1;
 438
 439         /* check state */
 440         switch (client->current_state) {
 441         case STT_STATE_PROCESSING:
 442         case STT_STATE_RECORDING:
 443         case STT_STATE_READY:
 444                 ret = stt_dbus_request_finalize(client->uid);
 445                 if (0 != ret) {
 446                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to request finalize : %s", __stt_get_error_code(ret));
 447                 }
 448         case STT_STATE_CREATED:
 449                 if (NULL != g_connect_timer) {
 450                         SLOG(LOG_DEBUG, TAG_STTC, "Connect Timer is deleted");
 451                         ecore_timer_del(g_connect_timer);
 452                         g_connect_timer = NULL;
 453                 }
 454
 455                 /* Free resources */
 456                 stt_client_destroy(stt);
 457                 break;
 458         default:
 459                 break;
 460         }
 461
 462         if (0 == stt_client_get_size()) {
 463                 if (0 != stt_dbus_close_connection()) {
 464                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to close connection");
 465                 }
 466         }
 467
 468         stt = NULL;
 469
 470         SLOG(LOG_DEBUG, TAG_STTC, "=====");
 471         SLOG(LOG_DEBUG, TAG_STTC, " ");
 472
 473         return STT_ERROR_NONE;
 474 }
 475
 476 bool __stt_config_supported_engine_cb(const char* engine_id, const char* engine_name,
 477                                       const char* setting, bool support_silence, void* user_data)
 478 {
 479         stt_h stt = (stt_h)user_data;
 480
 481         stt_client_s* client = stt_client_get(stt);
 482         if (NULL == client) {
 483                 SLOG(LOG_ERROR, TAG_STTC, "[WARNING] A handle is not valid");
 484                 return false;
 485         }
 486
 487         /* call callback function */
 488         if (NULL != client->supported_engine_cb) {
 489                 return client->supported_engine_cb(stt, engine_id, engine_name, client->supported_engine_user_data);
 490         } else {
 491                 SLOG(LOG_WARN, TAG_STTC, "No registered callback function of supported engine");
 492         }
 493
 494         return false;
 495 }
 496
 497 int stt_foreach_supported_engines(stt_h stt, stt_supported_engine_cb callback, void* user_data)
 498 {
 499         stt_client_s* client = NULL;
 500         if (0 != __stt_get_feature_enabled()) {
 501                 return STT_ERROR_NOT_SUPPORTED;
 502         }
 503         if (0 != __stt_check_privilege()) {
 504                 return STT_ERROR_PERMISSION_DENIED;
 505         }
 506         if (0 != __stt_check_handle(stt, &client)) {
 507                 return STT_ERROR_INVALID_PARAMETER;
 508         }
 509
 510         SLOG(LOG_DEBUG, TAG_STTC, "===== Foreach Supported engine");
 511
 512         if (NULL == callback) {
 513                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Input parameter is NULL");
 514                 return STT_ERROR_INVALID_PARAMETER;
 515         }
 516
 517         if (client->current_state != STT_STATE_CREATED) {
 518                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State: Current state(%d) is not CREATED", client->current_state);
 519                 return STT_ERROR_INVALID_STATE;
 520         }
 521
 522         client->supported_engine_cb = callback;
 523         client->supported_engine_user_data = user_data;
 524
 525         int ret = 0;
 526         ret = stt_config_mgr_get_engine_list(__stt_config_supported_engine_cb, client->stt);
 527         ret = __stt_convert_config_error_code(ret);
 528         if (0 != ret) {
 529                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to get engines : %s", __stt_get_error_code(ret));
 530         }
 531
 532         client->supported_engine_cb = NULL;
 533         client->supported_engine_user_data = NULL;
 534
 535         SLOG(LOG_DEBUG, TAG_STTC, "=====");
 536         SLOG(LOG_DEBUG, TAG_STTC, " ");
 537
 538         return ret;
 539 }
 540
 541 int stt_get_engine(stt_h stt, char** engine_id)
 542 {
 543         stt_client_s* client = NULL;
 544         if (0 != __stt_get_feature_enabled()) {
 545                 return STT_ERROR_NOT_SUPPORTED;
 546         }
 547         if (0 != __stt_check_privilege()) {
 548                 return STT_ERROR_PERMISSION_DENIED;
 549         }
 550         if (0 != __stt_check_handle(stt, &client)) {
 551                 return STT_ERROR_INVALID_PARAMETER;
 552         }
 553
 554         SLOG(LOG_DEBUG, TAG_STTC, "===== Get current engine");
 555
 556         if (NULL == engine_id) {
 557                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Input parameter is NULL");
 558                 return STT_ERROR_INVALID_PARAMETER;
 559         }
 560
 561         if (client->current_state != STT_STATE_CREATED) {
 562                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State: Current state(%d) is not CREATED", client->current_state);
 563                 return STT_ERROR_INVALID_STATE;
 564         }
 565
 566         int ret = 0;
 567
 568         if (NULL != client->current_engine_id) {
 569                 *engine_id = strdup(client->current_engine_id);
 570                 SLOG(LOG_DEBUG, TAG_STTC, "[SUCCESS] Current engine uuid = %s", *engine_id);
 571         } else {
 572
 573                 ret = stt_config_mgr_get_engine(engine_id);
 574                 ret = __stt_convert_config_error_code(ret);
 575                 if (0 != ret) {
 576                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to request get current engine : %s", __stt_get_error_code(ret));
 577                 } else {
 578                         SLOG(LOG_DEBUG, TAG_STTC, "[SUCCESS] Current engine uuid = %s", *engine_id);
 579                 }
 580         }
 581
 582         SLOG(LOG_DEBUG, TAG_STTC, "=====");
 583         SLOG(LOG_DEBUG, TAG_STTC, " ");
 584
 585         return ret;
 586 }
 587
 588 int __stt_set_buxtonkey(const char* engine_id)
 589 {
 590         /* Set vconfkey */
 591         struct buxton_client * bux_cli;
 592         struct buxton_layer * bux_layer;
 593         struct buxton_value * bux_val;
 594
 595         int ret = buxton_open(&bux_cli, NULL, NULL);
 596         if (0 != ret) {
 597                 SLOG(LOG_ERROR, stt_tag(), "[DBUS-BUXTON2] Fail to open buxton client");
 598                 return STT_ERROR_OPERATION_FAILED;
 599         }
 600         SLOG(LOG_DEBUG, stt_tag(), "[DBUS-BUXTON2] buxton_open: %d", ret);
 601         bux_layer = buxton_create_layer("system");
 602         if (NULL == bux_layer) {
 603                 SLOG(LOG_ERROR, stt_tag(), "[DBUS-BUXTON2] buxton_create_layer FAIL");
 604                 buxton_close(bux_cli);
 605                 bux_cli = NULL;
 606                 return STT_ERROR_OPERATION_FAILED;
 607         }
 608         bux_val = buxton_value_create_string(engine_id);
 609         if (NULL == bux_val) {
 610                 SLOG(LOG_ERROR, stt_tag(), "[DBUS-BUXTON2] buxton_value_create_string FAIL");
 611                 buxton_free_layer(bux_layer);
 612                 buxton_close(bux_cli);
 613                 bux_layer = NULL;
 614                 bux_cli = NULL;
 615                 return STT_ERROR_OPERATION_FAILED;
 616         }
 617
 618         ret = buxton_set_value_sync(bux_cli, bux_layer, STT_ENGINE_DB_CUSTOM, bux_val);
 619         if (0 != ret) {
 620                 SLOG(LOG_ERROR, stt_tag(), "[DBUS-BUXTON2] Fail to set value sync");
 621                 buxton_value_free(bux_val);
 622                 buxton_free_layer(bux_layer);
 623                 buxton_close(bux_cli);
 624
 625                 bux_cli = NULL;
 626                 bux_layer = NULL;
 627                 bux_val = NULL;
 628                 return STT_ERROR_OPERATION_FAILED;
 629         }
 630         SLOG(LOG_DEBUG, stt_tag(), "[DBUS-BUXTON2] buxton_set_value_sync: %d, %s", ret, STT_ENGINE_DB_CUSTOM);
 631
 632         buxton_value_free(bux_val);
 633         buxton_free_layer(bux_layer);
 634         buxton_close(bux_cli);
 635
 636         bux_cli = NULL;
 637         bux_layer = NULL;
 638         bux_val = NULL;
 639
 640         return STT_ERROR_NONE;
 641 }
 642
 643 int stt_set_engine(stt_h stt, const char* engine_id)
 644 {
 645         stt_client_s* client = NULL;
 646         if (0 != __stt_get_feature_enabled()) {
 647                 return STT_ERROR_NOT_SUPPORTED;
 648         }
 649         if (0 != __stt_check_privilege()) {
 650                 return STT_ERROR_PERMISSION_DENIED;
 651         }
 652         if (0 != __stt_check_privilege_for_applaunch()) {
 653                 return STT_ERROR_PERMISSION_DENIED;
 654         }
 655         if (0 != __stt_check_handle(stt, &client)) {
 656                 return STT_ERROR_INVALID_PARAMETER;
 657         }
 658
 659         SLOG(LOG_DEBUG, TAG_STTC, "===== Set current engine");
 660
 661         if (NULL == engine_id) {
 662                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Input parameter is NULL");
 663                 return STT_ERROR_INVALID_PARAMETER;
 664         }
 665
 666         /* check state */
 667         if (client->current_state != STT_STATE_CREATED) {
 668                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State: Current state(%d) is not CREATED", client->current_state);
 669                 return STT_ERROR_INVALID_STATE;
 670         }
 671
 672         if (NULL != client->current_engine_id) {
 673                 free(client->current_engine_id);
 674                 client->current_engine_id = NULL;
 675         }
 676
 677         SLOG(LOG_DEBUG, TAG_STTC, "===== engined_id(%s)", engine_id);
 678
 679         client->current_engine_id = strdup(engine_id);
 680
 681         /* Set vconfkey */
 682         int ret = __stt_set_buxtonkey(engine_id);
 683         if (0 != ret) {
 684                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] set buxtonkey Failed!!!");
 685                 return ret;
 686         }
 687
 688         SLOG(LOG_DEBUG, TAG_STTC, "=====");
 689         SLOG(LOG_DEBUG, TAG_STTC, " ");
 690
 691         return 0;
 692 }
 693
 694 int stt_set_credential(stt_h stt, const char* credential)
 695 {
 696         stt_client_s* client = NULL;
 697         if (0 != __stt_get_feature_enabled()) {
 698                 return STT_ERROR_NOT_SUPPORTED;
 699         }
 700         if (0 != __stt_check_privilege()) {
 701                 return STT_ERROR_PERMISSION_DENIED;
 702         }
 703         if (0 != __stt_check_handle(stt, &client)) {
 704                 return STT_ERROR_INVALID_PARAMETER;
 705         }
 706
 707         SLOG(LOG_DEBUG, TAG_STTC, "===== Set credential");
 708
 709         if (NULL == credential) {
 710                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Input parameter is NULL");
 711                 return STT_ERROR_INVALID_PARAMETER;
 712         }
 713
 714         /* check state */
 715         if (client->current_state != STT_STATE_CREATED && client->current_state != STT_STATE_READY) {
 716                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State: Current state(%d) is not CREATED or READY", client->current_state);
 717                 return STT_ERROR_INVALID_STATE;
 718         }
 719
 720         if (NULL != client->credential) {
 721                 free(client->credential);
 722                 client->credential = NULL;
 723         }
 724         client->credential = strdup(credential);
 725
 726         SLOG(LOG_DEBUG, TAG_STTC, "=====");
 727         SLOG(LOG_DEBUG, TAG_STTC, " ");
 728
 729         return STT_ERROR_NONE;
 730 }
 731
 732 int stt_set_private_data(stt_h stt, const char* key, const char* data)
 733 {
 734         stt_client_s* client = NULL;
 735         if (0 != __stt_get_feature_enabled()) {
 736                 return STT_ERROR_NOT_SUPPORTED;
 737         }
 738         if (0 != __stt_check_privilege()) {
 739                 return STT_ERROR_PERMISSION_DENIED;
 740         }
 741         if (0 != __stt_check_handle(stt, &client)) {
 742                 return STT_ERROR_INVALID_PARAMETER;
 743         }
 744
 745         SLOG(LOG_DEBUG, TAG_STTC, "===== Set private data");
 746
 747         if (NULL == key || NULL == data) {
 748                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid parameter");
 749                 return STT_ERROR_INVALID_PARAMETER;
 750         }
 751
 752         /* check state */
 753         if (STT_STATE_READY != client->current_state) {
 754                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State: Current state(%d) is not READY", client->current_state);
 755                 return STT_ERROR_INVALID_STATE;
 756         }
 757
 758         if (true != client->internal && (0 == strcmp(key, "server") || 0 == strcmp(key, "rampcode") || 0 == strcmp(key, "epd"))) {
 759                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] This is not an internal app");
 760                 return STT_ERROR_INVALID_PARAMETER;
 761         }
 762
 763         int ret = -1;
 764         int count = 0;
 765         while (0 != ret) {
 766                 ret = stt_dbus_request_set_private_data(client->uid, key, data);
 767                 if (0 != ret) {
 768                         if (STT_ERROR_TIMED_OUT != ret) {
 769                                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to set private data : %s", __stt_get_error_code(ret));
 770                                 return ret;
 771                         } else {
 772                                 SLOG(LOG_WARN, TAG_STTC, "[WARNING] retry : %s", __stt_get_error_code(ret));
 773                                 usleep(10000);
 774                                 count++;
 775                                 if (STT_RETRY_COUNT == count) {
 776                                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to request");
 777                                         return ret;
 778                                 }
 779                         }
 780                 }
 781         }
 782
 783         SLOG(LOG_DEBUG, TAG_STTC, "=====");
 784         SLOG(LOG_DEBUG, TAG_STTC, "");
 785
 786         return STT_ERROR_NONE;
 787
 788 }
 789 int stt_get_private_data(stt_h stt, const char* key, char** data)
 790 {
 791         stt_client_s* client = NULL;
 792         if (0 != __stt_get_feature_enabled()) {
 793                 return STT_ERROR_NOT_SUPPORTED;
 794         }
 795         if (0 != __stt_check_privilege()) {
 796                 return STT_ERROR_PERMISSION_DENIED;
 797         }
 798         if (0 != __stt_check_handle(stt, &client)) {
 799                 return STT_ERROR_INVALID_PARAMETER;
 800         }
 801
 802         SLOG(LOG_DEBUG, TAG_STTC, "===== Get private data");
 803
 804         if (NULL == key || NULL == data) {
 805                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid parameter");
 806                 return STT_ERROR_INVALID_PARAMETER;
 807         }
 808
 809         /* check state */
 810         if (STT_STATE_READY != client->current_state) {
 811                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State: Current state(%d) is not READY", client->current_state);
 812                 return STT_ERROR_INVALID_STATE;
 813         }
 814
 815         int ret = -1;
 816         int count = 0;
 817         while (0 != ret) {
 818                 ret = stt_dbus_request_get_private_data(client->uid, key, data);
 819                 if (0 != ret) {
 820                         if (STT_ERROR_TIMED_OUT != ret) {
 821                                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to get private data : %s", __stt_get_error_code(ret));
 822                                 return ret;
 823                         } else {
 824                                 SLOG(LOG_WARN, TAG_STTC, "[WARNING] retry : %s", __stt_get_error_code(ret));
 825                                 usleep(10000);
 826                                 count++;
 827                                 if (STT_RETRY_COUNT == count) {
 828                                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to request");
 829                                         return ret;
 830                                 }
 831                         }
 832                 }
 833         }
 834
 835         if (0 == strncmp(*data, "NULL", strlen(*data))) {
 836                 free(*data);
 837                 *data = NULL;
 838         }
 839
 840         SLOG(LOG_DEBUG, TAG_STTC, "=====");
 841         SLOG(LOG_DEBUG, TAG_STTC, "");
 842
 843         return STT_ERROR_NONE;
 844 }
 845
 846 int stt_set_server_stt(stt_h stt, const char* key, char* user_data)
 847 {
 848         int ret = -1;
 849         stt_client_s* client = NULL;
 850
 851         if (0 != __stt_get_feature_enabled()) {
 852                 return STT_ERROR_NOT_SUPPORTED;
 853         }
 854         if (0 != __stt_check_privilege()) {
 855                 return STT_ERROR_PERMISSION_DENIED;
 856         }
 857         if (0 != __stt_check_handle(stt, &client)) {
 858                 return STT_ERROR_INVALID_PARAMETER;
 859         }
 860
 861         SLOG(LOG_DEBUG, TAG_STTC, "===== Set STT server");
 862
 863         if (NULL == key || NULL == user_data) {
 864                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid parameter");
 865                 return STT_ERROR_INVALID_PARAMETER;
 866         }
 867
 868         if (STT_STATE_CREATED != client->current_state && STT_STATE_READY != client->current_state) {
 869                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] The current state is invalid (%d).", client->current_state);
 870                 return STT_ERROR_INVALID_STATE;
 871         }
 872
 873
 874         client->internal = true;
 875
 876         char* private_key = NULL;
 877         private_key = strdup(key);
 878         if (NULL == private_key) {
 879                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to allocate memory(private_key)");
 880                 return STT_ERROR_OUT_OF_MEMORY;
 881         }
 882
 883         char* data = NULL;
 884         data = strdup(user_data);
 885         if (NULL == data) {
 886                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to allocate memory(data)");
 887                 free(private_key);
 888                 private_key = NULL;
 889                 return STT_ERROR_OUT_OF_MEMORY;
 890         }
 891
 892         ret = stt_set_private_data(stt, private_key, data);
 893         if (0 != ret) {
 894                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to set private data, ret(%d), key(%s)", ret, private_key);
 895         }
 896
 897         free(data);
 898         data = NULL;
 899         free(private_key);
 900         private_key = NULL;
 901
 902         SLOG(LOG_DEBUG, TAG_STTC, "======");
 903         SLOG(LOG_DEBUG, TAG_STTC, " ");
 904
 905         return ret;
 906 }
 907
 908 static Eina_Bool __stt_connect_daemon(void *data)
 909 {
 910         stt_client_s* client = (stt_client_s*)data;
 911         int ret = -1;
 912
 913         if (NULL == client) {
 914                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] A handle is not available");
 915                 g_connect_timer = NULL;
 916                 return EINA_FALSE;
 917         }
 918
 919         /* Check and Set vconfkey of custom engine before sending hello */
 920         if (1 == g_privilege_applaunch_allowed && NULL != client->current_engine_id) {
 921                 /* Set vconfkey */
 922                 ret = __stt_set_buxtonkey(client->current_engine_id);
 923                 if (0 != ret) {
 924                         SLOG(LOG_DEBUG, TAG_STTC, "[DEBUG] set buxtonkey Failed!!! (inside __stt_connect_daemon)");
 925                         return EINA_TRUE;
 926                 }
 927         }
 928
 929         /* Send hello */
 930         ret = stt_dbus_request_hello(client->uid);
 931
 932         if (0 != ret) {
 933                 if (STT_ERROR_INVALID_STATE == ret) {
 934                         g_connect_timer = NULL;
 935                         return EINA_FALSE;
 936                 }
 937                 return EINA_TRUE;
 938         }
 939
 940         g_connect_timer = NULL;
 941         SLOG(LOG_DEBUG, TAG_STTC, "===== Connect stt-service");
 942
 943         /* request initialization */
 944         bool silence_supported = false;
 945         bool credential_needed = false;
 946
 947         ret = stt_dbus_request_initialize(client->uid, &silence_supported, &credential_needed);
 948
 949         if (STT_ERROR_ENGINE_NOT_FOUND == ret) {
 950                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to initialize : %s", __stt_get_error_code(ret));
 951
 952                 client->reason = STT_ERROR_ENGINE_NOT_FOUND;
 953                 ecore_timer_add(0, __stt_notify_error, (void*)client);
 954
 955                 return EINA_FALSE;
 956
 957         } else if (STT_ERROR_NONE != ret) {
 958                 SLOG(LOG_ERROR, TAG_STTC, "[WARNING] Fail to connection. Retry to connect");
 959                 return EINA_TRUE;
 960         } else {
 961                 /* success to connect stt-service */
 962                 client->silence_supported = silence_supported;
 963                 client->credential_needed = credential_needed;
 964                 SLOG(LOG_DEBUG, TAG_STTC, "Supported options : silence(%s), credential(%s)", silence_supported ? "support" : "no support", credential_needed ? "need" : "no need");
 965         }
 966
 967 #ifdef __UNUSED_CODES__
 968         if (NULL != client->current_engine_id) {
 969                 ret = -1;
 970                 int count = 0;
 971                 silence_supported = false;
 972                 credential_needed = false;
 973                 SLOG(LOG_DEBUG, TAG_STTC, "[WARNING] current_engine_id(%s)", client->current_engine_id);
 974
 975                 while (0 != ret) {
 976                         ret = stt_dbus_request_set_current_engine(client->uid, client->current_engine_id, &silence_supported, &credential_needed);
 977                         if (0 != ret) {
 978                                 if (STT_ERROR_TIMED_OUT != ret) {
 979                                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to set current engine : %s", __stt_get_error_code(ret));
 980                                         return ret;
 981                                 } else {
 982                                         SLOG(LOG_WARN, TAG_STTC, "[WARNING] retry");
 983                                         usleep(10000);
 984                                         count++;
 985                                         if (STT_RETRY_COUNT == count) {
 986                                                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to request");
 987                                                 return ret;
 988                                         }
 989                                 }
 990                         } else {
 991                                 SLOG(LOG_DEBUG, TAG_STTC, "[SUCCESS] Current engine uuid = %s", client->current_engine_id);
 992
 993                                 /* success to change engine */
 994                                 client->silence_supported = silence_supported;
 995                                 SLOG(LOG_DEBUG, TAG_STTC, "Supported options : silence(%s), credential(%s)", silence_supported ? "support" : "no support", credential_needed ? "need" : "no need");
 996                         }
 997                 }
 998         }
 999 #endif
1000         SLOG(LOG_DEBUG, TAG_STTC, "[SUCCESS] uid(%d)", client->uid);
1001
1002         client->before_state = client->current_state;
1003         client->current_state = STT_STATE_READY;
1004
1005         if (NULL != client->state_changed_cb) {
1006                 stt_client_use_callback(client);
1007                 client->state_changed_cb(client->stt, client->before_state,
1008                         client->current_state, client->state_changed_user_data);
1009                 stt_client_not_use_callback(client);
1010                 SLOG(LOG_DEBUG, TAG_STTC, "State changed callback is called");
1011         } else {
1012                 SLOG(LOG_WARN, TAG_STTC, "[WARNING] State changed callback is null");
1013         }
1014
1015         SLOG(LOG_DEBUG, TAG_STTC, "=====");
1016         SLOG(LOG_DEBUG, TAG_STTC, "  ");
1017
1018         return EINA_FALSE;
1019 }
1020
1021 int stt_prepare(stt_h stt)
1022 {
1023         stt_client_s* client = NULL;
1024         if (0 != __stt_get_feature_enabled()) {
1025                 return STT_ERROR_NOT_SUPPORTED;
1026         }
1027         if (0 != __stt_check_privilege()) {
1028                 return STT_ERROR_PERMISSION_DENIED;
1029         }
1030         if (0 != __stt_check_handle(stt, &client)) {
1031                 return STT_ERROR_INVALID_PARAMETER;
1032         }
1033
1034         /* check state */
1035         if (client->current_state != STT_STATE_CREATED) {
1036                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State: Current state(%d) is not 'CREATED'", client->current_state);
1037                 return STT_ERROR_INVALID_STATE;
1038         }
1039
1040         g_connect_timer = ecore_timer_add(0, __stt_connect_daemon, (void*)client);
1041
1042         SLOG(LOG_DEBUG, TAG_STTC, "=====");
1043         SLOG(LOG_DEBUG, TAG_STTC, " ");
1044
1045         return STT_ERROR_NONE;
1046 }
1047
1048 int stt_unprepare(stt_h stt)
1049 {
1050         stt_client_s* client = NULL;
1051         if (0 != __stt_get_feature_enabled()) {
1052                 return STT_ERROR_NOT_SUPPORTED;
1053         }
1054         if (0 != __stt_check_privilege()) {
1055                 return STT_ERROR_PERMISSION_DENIED;
1056         }
1057         if (0 != __stt_check_handle(stt, &client)) {
1058                 return STT_ERROR_INVALID_PARAMETER;
1059         }
1060
1061         SLOG(LOG_DEBUG, TAG_STTC, "===== Unprepare STT");
1062
1063         /* check state */
1064         if (client->current_state != STT_STATE_READY) {
1065                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State: Current state(%d) is not 'READY'", client->current_state);
1066                 return STT_ERROR_INVALID_STATE;
1067         }
1068
1069         int ret = -1;
1070         int count = 0;
1071         while (0 != ret) {
1072                 ret = stt_dbus_request_finalize(client->uid);
1073                 if (0 != ret) {
1074                         if (STT_ERROR_TIMED_OUT != ret) {
1075                                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to request finalize : %s", __stt_get_error_code(ret));
1076                                 break;
1077                         } else {
1078                                 SLOG(LOG_WARN, TAG_STTC, "[WARNING] retry");
1079                                 usleep(10000);
1080                                 count++;
1081                                 if (STT_RETRY_COUNT == count) {
1082                                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to request");
1083                                         break;
1084                                 }
1085                         }
1086                 }
1087         }
1088
1089         client->internal_state = STT_INTERNAL_STATE_NONE;
1090
1091         client->before_state = client->current_state;
1092         client->current_state = STT_STATE_CREATED;
1093
1094         if (NULL != client->state_changed_cb) {
1095                 stt_client_use_callback(client);
1096                 client->state_changed_cb(client->stt, client->before_state,
1097                         client->current_state, client->state_changed_user_data);
1098                 stt_client_not_use_callback(client);
1099         } else {
1100                 SLOG(LOG_WARN, TAG_STTC, "[WARNING] State changed callback is null");
1101         }
1102
1103         if (g_connect_timer) {
1104                 ecore_timer_del(g_connect_timer);
1105                 g_connect_timer = NULL;
1106         }
1107
1108         SLOG(LOG_DEBUG, TAG_STTC, "=====");
1109         SLOG(LOG_DEBUG, TAG_STTC, " ");
1110
1111         return STT_ERROR_NONE;
1112 }
1113
1114 bool __stt_config_supported_language_cb(const char* engine_id, const char* language, void* user_data)
1115 {
1116         stt_h stt = (stt_h)user_data;
1117
1118         stt_client_s* client = stt_client_get(stt);
1119         if (NULL == client) {
1120                 SLOG(LOG_ERROR, TAG_STTC, "[WARNING] A handle is not valid");
1121                 return false;
1122         }
1123
1124         /* call callback function */
1125         if (NULL != client->supported_lang_cb) {
1126                 return client->supported_lang_cb(stt, language, client->supported_lang_user_data);
1127         } else {
1128                 SLOG(LOG_WARN, TAG_STTC, "No registered callback function of supported languages");
1129         }
1130
1131         return false;
1132 }
1133
1134 int stt_foreach_supported_languages(stt_h stt, stt_supported_language_cb callback, void* user_data)
1135 {
1136         stt_client_s* client = NULL;
1137         if (0 != __stt_get_feature_enabled()) {
1138                 return STT_ERROR_NOT_SUPPORTED;
1139         }
1140         if (0 != __stt_check_privilege()) {
1141                 return STT_ERROR_PERMISSION_DENIED;
1142         }
1143         if (0 != __stt_check_handle(stt, &client)) {
1144                 return STT_ERROR_INVALID_PARAMETER;
1145         }
1146
1147         SLOG(LOG_DEBUG, TAG_STTC, "===== Foreach Supported Language");
1148
1149         if (NULL == callback) {
1150                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Input parameter is NULL");
1151                 return STT_ERROR_INVALID_PARAMETER;
1152         }
1153
1154         int ret;
1155         char* current_engine_id = NULL;
1156
1157         if (NULL == client->current_engine_id) {
1158                 ret = stt_config_mgr_get_engine(&current_engine_id);
1159                 ret = __stt_convert_config_error_code(ret);
1160                 if (0 != ret) {
1161                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to get default engine id : %s", __stt_get_error_code(ret));
1162                         return ret;
1163                 }
1164         } else {
1165                 current_engine_id = strdup(client->current_engine_id);
1166                 if (NULL == current_engine_id) {
1167                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to allocate memory");
1168                         return STT_ERROR_OUT_OF_MEMORY;
1169                 }
1170         }
1171
1172         client->supported_lang_cb = callback;
1173         client->supported_lang_user_data = user_data;
1174
1175         ret = stt_config_mgr_get_language_list(current_engine_id, __stt_config_supported_language_cb, client->stt);
1176         ret = __stt_convert_config_error_code(ret);
1177         if (0 != ret) {
1178                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to get languages : %s", __stt_get_error_code(ret));
1179         }
1180
1181         if (NULL != current_engine_id) {
1182                 free(current_engine_id);
1183                 current_engine_id = NULL;
1184         }
1185
1186         client->supported_lang_cb = NULL;
1187         client->supported_lang_user_data = NULL;
1188
1189         SLOG(LOG_DEBUG, TAG_STTC, "=====");
1190         SLOG(LOG_DEBUG, TAG_STTC, " ");
1191
1192         return ret;
1193 }
1194
1195 int stt_get_default_language(stt_h stt, char** language)
1196 {
1197         stt_client_s* client = NULL;
1198         if (0 != __stt_get_feature_enabled()) {
1199                 return STT_ERROR_NOT_SUPPORTED;
1200         }
1201         if (0 != __stt_check_privilege()) {
1202                 return STT_ERROR_PERMISSION_DENIED;
1203         }
1204         if (0 != __stt_check_handle(stt, &client)) {
1205                 return STT_ERROR_INVALID_PARAMETER;
1206         }
1207
1208         SLOG(LOG_DEBUG, TAG_STTC, "===== Get Default Language");
1209
1210         if (NULL == language) {
1211                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Input parameter is NULL");
1212                 return STT_ERROR_INVALID_PARAMETER;
1213         }
1214
1215         int ret = 0;
1216         ret = stt_config_mgr_get_default_language(language);
1217         ret = __stt_convert_config_error_code(ret);
1218         if (0 != ret) {
1219                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to get default language : %s", __stt_get_error_code(ret));
1220         } else {
1221                 SLOG(LOG_DEBUG, TAG_STTC, "[SUCCESS] Current language = %s", *language);
1222         }
1223
1224         SLOG(LOG_DEBUG, TAG_STTC, "=====");
1225         SLOG(LOG_DEBUG, TAG_STTC, " ");
1226
1227         return ret;
1228 }
1229
1230 int stt_get_state(stt_h stt, stt_state_e* state)
1231 {
1232         stt_client_s* client = NULL;
1233         if (0 != __stt_get_feature_enabled()) {
1234                 return STT_ERROR_NOT_SUPPORTED;
1235         }
1236         if (0 != __stt_check_privilege()) {
1237                 return STT_ERROR_PERMISSION_DENIED;
1238         }
1239         if (0 != __stt_check_handle(stt, &client)) {
1240                 return STT_ERROR_INVALID_PARAMETER;
1241         }
1242
1243         if (NULL == state) {
1244                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Input parameter is NULL");
1245                 return STT_ERROR_INVALID_PARAMETER;
1246         }
1247
1248         *state = client->current_state;
1249
1250         switch (*state) {
1251         case STT_STATE_CREATED:         SLOG(LOG_DEBUG, TAG_STTC, "Current state is 'CREATED'");        break;
1252         case STT_STATE_READY:           SLOG(LOG_DEBUG, TAG_STTC, "Current state is 'Ready'");          break;
1253         case STT_STATE_RECORDING:       SLOG(LOG_DEBUG, TAG_STTC, "Current state is 'Recording'");      break;
1254         case STT_STATE_PROCESSING:      SLOG(LOG_DEBUG, TAG_STTC, "Current state is 'Processing'");     break;
1255         default:                        SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid value");             break;
1256         }
1257
1258         return STT_ERROR_NONE;
1259 }
1260
1261 int stt_get_error_message(stt_h stt, char** err_msg)
1262 {
1263         stt_client_s* client = NULL;
1264         if (0 != __stt_get_feature_enabled()) {
1265                 return STT_ERROR_NOT_SUPPORTED;
1266         }
1267         if (0 != __stt_check_privilege()) {
1268                 return STT_ERROR_PERMISSION_DENIED;
1269         }
1270         if (0 != __stt_check_handle(stt, &client)) {
1271                 return STT_ERROR_INVALID_PARAMETER;
1272         }
1273
1274         if (NULL == err_msg) {
1275                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Input parameter is NULL");
1276                 return STT_ERROR_INVALID_PARAMETER;
1277         }
1278
1279         if (false == g_err_callback_status) {
1280                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] This callback should be called during an err_callback");
1281                 return STT_ERROR_OPERATION_FAILED;
1282         }
1283
1284         if (NULL != client->err_msg) {
1285                 *err_msg = strdup(client->err_msg);
1286                 SLOG(LOG_DEBUG, TAG_STTC, "[SUCCESS] Error msg (%s)", *err_msg);
1287         } else {
1288                 SLOG(LOG_DEBUG, TAG_STTC, "[SUCCESS] Error msg (NULL)");
1289         }
1290
1291         SLOG(LOG_DEBUG, TAG_STTC, "=====");
1292         SLOG(LOG_DEBUG, TAG_STTC, " ");
1293
1294         return STT_ERROR_NONE;
1295 }
1296
1297 int stt_is_recognition_type_supported(stt_h stt, const char* type, bool* support)
1298 {
1299         stt_client_s* client = NULL;
1300         if (0 != __stt_get_feature_enabled()) {
1301                 return STT_ERROR_NOT_SUPPORTED;
1302         }
1303         if (0 != __stt_check_privilege()) {
1304                 return STT_ERROR_PERMISSION_DENIED;
1305         }
1306         if (0 != __stt_check_handle(stt, &client)) {
1307                 return STT_ERROR_INVALID_PARAMETER;
1308         }
1309
1310         if (NULL == type || NULL == support) {
1311                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Input parameter is NULL");
1312                 return STT_ERROR_INVALID_PARAMETER;
1313         }
1314
1315         /* check state */
1316         if (client->current_state != STT_STATE_READY) {
1317                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State: Current state(%d) is not READY", client->current_state);
1318                 return STT_ERROR_INVALID_STATE;
1319         }
1320
1321         int ret = -1;
1322         int count = 0;
1323         while (0 != ret) {
1324                 ret = stt_dbus_request_is_recognition_type_supported(client->uid, type, support);
1325                 if (0 != ret) {
1326                         if (STT_ERROR_TIMED_OUT != ret) {
1327                                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to get recognition type supported : %s", __stt_get_error_code(ret));
1328                                 return ret;
1329                         } else {
1330                                 SLOG(LOG_WARN, TAG_STTC, "[WARNING] retry");
1331                                 usleep(10000);
1332                                 count++;
1333                                 if (STT_RETRY_COUNT == count) {
1334                                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to request");
1335                                         return ret;
1336                                 }
1337                         }
1338                 } else {
1339                         SLOG(LOG_DEBUG, TAG_STTC, "[SUCCESS] recognition type is %s", *support ? "true " : "false");
1340                         break;
1341                 }
1342         }
1343
1344         return STT_ERROR_NONE;
1345 }
1346
1347 int stt_set_silence_detection(stt_h stt, stt_option_silence_detection_e type)
1348 {
1349         stt_client_s* client = NULL;
1350         if (0 != __stt_get_feature_enabled()) {
1351                 return STT_ERROR_NOT_SUPPORTED;
1352         }
1353         if (0 != __stt_check_privilege()) {
1354                 return STT_ERROR_PERMISSION_DENIED;
1355         }
1356         if (0 != __stt_check_handle(stt, &client)) {
1357                 return STT_ERROR_INVALID_PARAMETER;
1358         }
1359
1360         /* check state */
1361         if (client->current_state != STT_STATE_READY) {
1362                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State: Current state(%d) is not READY", client->current_state);
1363                 return STT_ERROR_INVALID_STATE;
1364         }
1365
1366         if (true == client->silence_supported) {
1367                 if (type >= STT_OPTION_SILENCE_DETECTION_FALSE && type <= STT_OPTION_SILENCE_DETECTION_AUTO) {
1368                         client->silence = type;
1369                 } else {
1370                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Type is invalid");
1371                         return STT_ERROR_INVALID_PARAMETER;
1372                 }
1373         } else {
1374                 return STT_ERROR_NOT_SUPPORTED_FEATURE;
1375         }
1376
1377         return STT_ERROR_NONE;
1378 }
1379
1380 int stt_set_start_sound(stt_h stt, const char* filename)
1381 {
1382         stt_client_s* client = NULL;
1383         if (0 != __stt_get_feature_enabled()) {
1384                 return STT_ERROR_NOT_SUPPORTED;
1385         }
1386         if (0 != __stt_check_privilege()) {
1387                 return STT_ERROR_PERMISSION_DENIED;
1388         }
1389         if (0 != __stt_check_handle(stt, &client)) {
1390                 return STT_ERROR_INVALID_PARAMETER;
1391         }
1392
1393         SLOG(LOG_DEBUG, TAG_STTC, "===== STT SET START SOUND");
1394
1395         if (NULL == filename) {
1396                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Input parameter is NULL");
1397                 return STT_ERROR_INVALID_PARAMETER;
1398         }
1399
1400         if (0 != access(filename, F_OK)) {
1401                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] File does not exist");
1402                 return STT_ERROR_INVALID_PARAMETER;
1403         }
1404
1405         /* check state */
1406         if (client->current_state != STT_STATE_READY) {
1407                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State: Current state(%d) is not READY", client->current_state);
1408                 return STT_ERROR_INVALID_STATE;
1409         }
1410
1411         int ret = -1;
1412         int count = 0;
1413         while (0 != ret) {
1414                 ret = stt_dbus_request_set_start_sound(client->uid, filename);
1415                 if (0 != ret) {
1416                         if (STT_ERROR_TIMED_OUT != ret) {
1417                                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to set start sound : %s", __stt_get_error_code(ret));
1418                                 return ret;
1419                         } else {
1420                                 SLOG(LOG_WARN, TAG_STTC, "[WARNING] retry");
1421                                 usleep(10000);
1422                                 count++;
1423                                 if (STT_RETRY_COUNT == count) {
1424                                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to request");
1425                                         return ret;
1426                                 }
1427                         }
1428                 } else {
1429                         SLOG(LOG_DEBUG, TAG_STTC, "[SUCCESS] Set start sound : %s", filename);
1430                         break;
1431                 }
1432         }
1433
1434         return STT_ERROR_NONE;
1435 }
1436
1437 int stt_unset_start_sound(stt_h stt)
1438 {
1439         stt_client_s* client = NULL;
1440         if (0 != __stt_get_feature_enabled()) {
1441                 return STT_ERROR_NOT_SUPPORTED;
1442         }
1443         if (0 != __stt_check_privilege()) {
1444                 return STT_ERROR_PERMISSION_DENIED;
1445         }
1446         if (0 != __stt_check_handle(stt, &client)) {
1447                 return STT_ERROR_INVALID_PARAMETER;
1448         }
1449
1450         SLOG(LOG_DEBUG, TAG_STTC, "===== STT UNSET START SOUND");
1451
1452         /* check state */
1453         if (client->current_state != STT_STATE_READY) {
1454                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State: Current state(%d) is not READY", client->current_state);
1455                 return STT_ERROR_INVALID_STATE;
1456         }
1457
1458         int ret = -1;
1459         int count = 0;
1460         while (0 != ret) {
1461                 ret = stt_dbus_request_unset_start_sound(client->uid);
1462                 if (0 != ret) {
1463                         if (STT_ERROR_TIMED_OUT != ret) {
1464                                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to unset start sound : %s", __stt_get_error_code(ret));
1465                                 return ret;
1466                         } else {
1467                                 SLOG(LOG_WARN, TAG_STTC, "[WARNING] retry");
1468                                 usleep(10000);
1469                                 count++;
1470                                 if (STT_RETRY_COUNT == count) {
1471                                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to request");
1472                                         return ret;
1473                                 }
1474                         }
1475                 } else {
1476                         SLOG(LOG_DEBUG, TAG_STTC, "[SUCCESS] Unset start sound");
1477                         break;
1478                 }
1479         }
1480
1481         return STT_ERROR_NONE;
1482 }
1483
1484 int stt_set_stop_sound(stt_h stt, const char* filename)
1485 {
1486         stt_client_s* client = NULL;
1487         if (0 != __stt_get_feature_enabled()) {
1488                 return STT_ERROR_NOT_SUPPORTED;
1489         }
1490         if (0 != __stt_check_privilege()) {
1491                 return STT_ERROR_PERMISSION_DENIED;
1492         }
1493         if (0 != __stt_check_handle(stt, &client)) {
1494                 return STT_ERROR_INVALID_PARAMETER;
1495         }
1496
1497         SLOG(LOG_DEBUG, TAG_STTC, "===== STT SET STOP SOUND");
1498
1499         if (NULL == filename) {
1500                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Input parameter is NULL");
1501                 return STT_ERROR_INVALID_PARAMETER;
1502         }
1503
1504         if (0 != access(filename, F_OK)) {
1505                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] File does not exist");
1506                 return STT_ERROR_INVALID_PARAMETER;
1507         }
1508
1509         /* check state */
1510         if (client->current_state != STT_STATE_READY) {
1511                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State: Current state(%d) is not READY", client->current_state);
1512                 return STT_ERROR_INVALID_STATE;
1513         }
1514
1515         int ret = -1;
1516         int count = 0;
1517         while (0 != ret) {
1518                 ret = stt_dbus_request_set_stop_sound(client->uid, filename);
1519                 if (0 != ret) {
1520                         if (STT_ERROR_TIMED_OUT != ret) {
1521                                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to set stop sound : %s", __stt_get_error_code(ret));
1522                                 return ret;
1523                         } else {
1524                                 SLOG(LOG_WARN, TAG_STTC, "[WARNING] retry");
1525                                 usleep(10000);
1526                                 count++;
1527                                 if (STT_RETRY_COUNT == count) {
1528                                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to request");
1529                                         return ret;
1530                                 }
1531                         }
1532                 } else {
1533                         SLOG(LOG_DEBUG, TAG_STTC, "[SUCCESS] Set stop sound : %s", filename);
1534                         break;
1535                 }
1536         }
1537
1538         return STT_ERROR_NONE;
1539 }
1540
1541 int stt_unset_stop_sound(stt_h stt)
1542 {
1543         stt_client_s* client = NULL;
1544         if (0 != __stt_get_feature_enabled()) {
1545                 return STT_ERROR_NOT_SUPPORTED;
1546         }
1547         if (0 != __stt_check_privilege()) {
1548                 return STT_ERROR_PERMISSION_DENIED;
1549         }
1550         if (0 != __stt_check_handle(stt, &client)) {
1551                 return STT_ERROR_INVALID_PARAMETER;
1552         }
1553
1554         SLOG(LOG_DEBUG, TAG_STTC, "===== STT UNSET STOP SOUND");
1555
1556         /* check state */
1557         if (client->current_state != STT_STATE_READY) {
1558                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State: Current state(%d) is not READY", client->current_state);
1559                 return STT_ERROR_INVALID_STATE;
1560         }
1561
1562         int ret = -1;
1563         int count = 0;
1564         while (0 != ret) {
1565                 ret = stt_dbus_request_unset_stop_sound(client->uid);
1566                 if (0 != ret) {
1567                         if (STT_ERROR_TIMED_OUT != ret) {
1568                                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to unset stop sound : %s", __stt_get_error_code(ret));
1569                                 return ret;
1570                         } else {
1571                                 SLOG(LOG_WARN, TAG_STTC, "[WARNING] retry");
1572                                 usleep(10000);
1573                                 count++;
1574                                 if (STT_RETRY_COUNT == count) {
1575                                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to request");
1576                                         return ret;
1577                                 }
1578                         }
1579                 } else {
1580                         SLOG(LOG_DEBUG, TAG_STTC, "[SUCCESS] Unset stop sound");
1581                         break;
1582                 }
1583         }
1584
1585         return STT_ERROR_NONE;
1586 }
1587
1588 int stt_start(stt_h stt, const char* language, const char* type)
1589 {
1590         stt_client_s* client = NULL;
1591         if (0 != __stt_get_feature_enabled()) {
1592                 return STT_ERROR_NOT_SUPPORTED;
1593         }
1594         if (0 != __stt_check_privilege()) {
1595                 return STT_ERROR_PERMISSION_DENIED;
1596         }
1597         if (0 != __stt_check_handle(stt, &client)) {
1598                 return STT_ERROR_INVALID_PARAMETER;
1599         }
1600
1601         SLOG(LOG_DEBUG, TAG_STTC, "===== STT START");
1602
1603         /* check state */
1604         if (client->current_state != STT_STATE_READY) {
1605                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State: Current state(%d) is not READY", client->current_state);
1606                 return STT_ERROR_INVALID_STATE;
1607         }
1608
1609         if (STT_INTERNAL_STATE_NONE != client->internal_state) {
1610                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State : Internal state is NOT none : %d", client->internal_state);
1611                 return STT_ERROR_IN_PROGRESS_TO_RECORDING;
1612         }
1613
1614         int ret = -1;
1615         char appid[128] = {0, };
1616         ret = aul_app_get_appid_bypid(getpid(), appid, sizeof(appid));
1617
1618         if ((AUL_R_OK != ret) || (0 == strlen(appid))) {
1619                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to get application ID");
1620         } else {
1621                 SLOG(LOG_DEBUG, TAG_STTC, "[DEBUG] Current app id is %s", appid);
1622         }
1623
1624         char* temp = NULL;
1625         if (NULL == language) {
1626                 temp = strdup("default");
1627         } else {
1628                 temp = strdup(language);
1629         }
1630
1631         if (true == client->credential_needed && NULL == client->credential) {
1632                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Do not have app credential for this engine(%s)", client->current_engine_id);
1633                 return STT_ERROR_PERMISSION_DENIED;
1634         }
1635
1636         client->internal_state = STT_INTERNAL_STATE_STARTING;
1637         ret = stt_dbus_request_start(client->uid, temp, type, client->silence, appid, client->credential);
1638         if (0 != ret) {
1639                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to start : %s", __stt_get_error_code(ret));
1640                 client->internal_state = STT_INTERNAL_STATE_NONE;
1641         } else {
1642                 SLOG(LOG_DEBUG, TAG_STTC, "[SUCCESS] Start is successful but not done");
1643         }
1644
1645         if (NULL != temp)       free(temp);
1646
1647         SLOG(LOG_DEBUG, TAG_STTC, "=====");
1648         SLOG(LOG_DEBUG, TAG_STTC, " ");
1649
1650         return ret;
1651 }
1652
1653 int stt_stop(stt_h stt)
1654 {
1655         stt_client_s* client = NULL;
1656         if (0 != __stt_get_feature_enabled()) {
1657                 return STT_ERROR_NOT_SUPPORTED;
1658         }
1659         if (0 != __stt_check_privilege()) {
1660                 return STT_ERROR_PERMISSION_DENIED;
1661         }
1662         if (0 != __stt_check_handle(stt, &client)) {
1663                 return STT_ERROR_INVALID_PARAMETER;
1664         }
1665
1666         SLOG(LOG_DEBUG, TAG_STTC, "===== STT STOP");
1667
1668         /* check state */
1669         if (client->current_state != STT_STATE_RECORDING) {
1670                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State : Current state(%d) is NOT RECORDING", client->current_state);
1671                 return STT_ERROR_INVALID_STATE;
1672         }
1673
1674         if (STT_INTERNAL_STATE_STARTING == client->internal_state) {
1675                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State : Internal state is STARTING : %d", client->internal_state);
1676                 return STT_ERROR_IN_PROGRESS_TO_RECORDING;
1677         } else if (STT_INTERNAL_STATE_CANCELING == client->internal_state) {
1678                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State : Internal state is CANCELING : %d", client->internal_state);
1679                 return STT_ERROR_IN_PROGRESS_TO_READY;
1680         } else if (STT_INTERNAL_STATE_STOPPING == client->internal_state) {
1681                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State : Internal state is STOPPING : %d", client->internal_state);
1682                 return STT_ERROR_IN_PROGRESS_TO_PROCESSING;
1683         }
1684
1685         client->internal_state = STT_INTERNAL_STATE_STOPPING;
1686         int ret = stt_dbus_request_stop(client->uid);
1687         if (0 != ret) {
1688                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to stop : %s", __stt_get_error_code(ret));
1689                 client->internal_state = STT_INTERNAL_STATE_NONE;
1690         } else {
1691                 SLOG(LOG_DEBUG, TAG_STTC, "[SUCCESS] Stop is successful but not done");
1692         }
1693
1694         SLOG(LOG_DEBUG, TAG_STTC, "=====");
1695         SLOG(LOG_DEBUG, TAG_STTC, " ");
1696
1697         return ret;
1698 }
1699
1700
1701 int stt_cancel(stt_h stt)
1702 {
1703         stt_client_s* client = NULL;
1704         if (0 != __stt_get_feature_enabled()) {
1705                 return STT_ERROR_NOT_SUPPORTED;
1706         }
1707         if (0 != __stt_check_privilege()) {
1708                 return STT_ERROR_PERMISSION_DENIED;
1709         }
1710         if (0 != __stt_check_handle(stt, &client)) {
1711                 return STT_ERROR_INVALID_PARAMETER;
1712         }
1713
1714         SLOG(LOG_DEBUG, TAG_STTC, "===== STT CANCEL");
1715
1716         /* check state */
1717         if (STT_STATE_RECORDING != client->current_state && STT_STATE_PROCESSING != client->current_state) {
1718                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid state : Current state(%d) is 'Ready'", client->current_state);
1719                 return STT_ERROR_INVALID_STATE;
1720         }
1721
1722         if (STT_INTERNAL_STATE_STARTING == client->internal_state) {
1723                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State : Internal state is STARTING : %d", client->internal_state);
1724                 return STT_ERROR_IN_PROGRESS_TO_RECORDING;
1725         } else if (STT_INTERNAL_STATE_STOPPING == client->internal_state) {
1726                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State : Internal state is STOPPING : %d", client->internal_state);
1727                 return STT_ERROR_IN_PROGRESS_TO_PROCESSING;
1728         } else if (STT_INTERNAL_STATE_CANCELING == client->internal_state) {
1729                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Invalid State : Internal state is CANCELING : %d", client->internal_state);
1730                 return STT_ERROR_IN_PROGRESS_TO_READY;
1731         }
1732
1733         client->internal_state = STT_INTERNAL_STATE_CANCELING;
1734         int ret = stt_dbus_request_cancel(client->uid);
1735         if (0 != ret) {
1736                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to cancel : %s", __stt_get_error_code(ret));
1737                 client->internal_state = STT_INTERNAL_STATE_NONE;
1738         } else {
1739                 SLOG(LOG_DEBUG, TAG_STTC, "[SUCCESS] Cancel is successful but not done");
1740         }
1741
1742         SLOG(LOG_DEBUG, TAG_STTC, "=====");
1743         SLOG(LOG_DEBUG, TAG_STTC, " ");
1744
1745         return ret;
1746 }
1747
1748 int __stt_cb_set_volume(int uid, float volume)
1749 {
1750         stt_client_s* client = NULL;
1751
1752         client = stt_client_get_by_uid(uid);
1753         if (NULL == client) {
1754                 SLOG(LOG_ERROR, TAG_STTC, "Handle is NOT valid");
1755                 return STT_ERROR_INVALID_PARAMETER;
1756         }
1757
1758         if (STT_STATE_RECORDING != client->current_state) {
1759                 SLOG(LOG_DEBUG, TAG_STTC, "[ERROR] Invalid state : NO 'Recording' state, cur(%d)", client->current_state);
1760                 return STT_ERROR_INVALID_STATE;
1761         }
1762
1763         g_volume_db = volume;
1764         SLOG(LOG_DEBUG, TAG_STTC, "Set volume (%f)", g_volume_db);
1765
1766         return 0;
1767 }
1768
1769 int stt_get_recording_volume(stt_h stt, float* volume)
1770 {
1771         stt_client_s* client = NULL;
1772         if (0 != __stt_get_feature_enabled()) {
1773                 return STT_ERROR_NOT_SUPPORTED;
1774         }
1775         if (0 != __stt_check_privilege()) {
1776                 return STT_ERROR_PERMISSION_DENIED;
1777         }
1778         if (0 != __stt_check_handle(stt, &client)) {
1779                 return STT_ERROR_INVALID_PARAMETER;
1780         }
1781
1782         if (NULL == volume) {
1783                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Input parameter is NULL");
1784                 return STT_ERROR_INVALID_PARAMETER;
1785         }
1786
1787         if (STT_STATE_RECORDING != client->current_state) {
1788                 SLOG(LOG_DEBUG, TAG_STTC, "[ERROR] Invalid state : NO 'Recording' state, cur(%d)", client->current_state);
1789                 return STT_ERROR_INVALID_STATE;
1790         }
1791
1792         *volume = g_volume_db;
1793
1794         return STT_ERROR_NONE;
1795 }
1796
1797 bool __stt_result_time_cb(int index, int event, const char* text, long start_time, long end_time, void* user_data)
1798 {
1799         stt_client_s* client = (stt_client_s*)user_data;
1800
1801         /* check handle */
1802         if (NULL == client) {
1803                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to notify error : A handle is not valid");
1804                 return EINA_FALSE;
1805         }
1806
1807         if (NULL != client->result_time_cb) {
1808                 SLOG(LOG_DEBUG, TAG_STTC, "(%d) event(%d) text(%s) start(%ld) end(%ld)",
1809                         index, event, text, start_time, end_time);
1810                 client->result_time_cb(client->stt, index, (stt_result_time_event_e)event,
1811                         text, start_time, end_time, client->result_time_user_data);
1812         } else {
1813                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Callback is NULL");
1814                 return false;
1815         }
1816
1817         return true;
1818 }
1819
1820 int stt_foreach_detailed_result(stt_h stt, stt_result_time_cb callback, void* user_data)
1821 {
1822         stt_client_s* client = NULL;
1823         if (0 != __stt_get_feature_enabled()) {
1824                 return STT_ERROR_NOT_SUPPORTED;
1825         }
1826         if (0 != __stt_check_privilege()) {
1827                 return STT_ERROR_PERMISSION_DENIED;
1828         }
1829         if (0 != __stt_check_handle(stt, &client)) {
1830                 return STT_ERROR_INVALID_PARAMETER;
1831         }
1832
1833         SLOG(LOG_DEBUG, TAG_STTC, "===== STT FOREACH DETAILED RESULT");
1834
1835         if (NULL == callback) {
1836                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Input parameter is NULL");
1837                 return STT_ERROR_INVALID_PARAMETER;
1838         }
1839
1840         client->result_time_cb = callback;
1841         client->result_time_user_data = user_data;
1842
1843         int ret = -1;
1844         ret = stt_config_mgr_foreach_time_info(__stt_result_time_cb, client);
1845         ret = __stt_convert_config_error_code(ret);
1846         if (0 != ret) {
1847                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to foreach time info : %s", __stt_get_error_code(ret));
1848         }
1849
1850         client->result_time_cb = NULL;
1851         client->result_time_user_data = NULL;
1852
1853         SLOG(LOG_DEBUG, TAG_STTC, "=====");
1854         SLOG(LOG_DEBUG, TAG_STTC, " ");
1855
1856         return ret;
1857 }
1858
1859 static Eina_Bool __stt_notify_error(void *data)
1860 {
1861         stt_client_s* client = (stt_client_s*)data;
1862
1863         SLOG(LOG_WARN, TAG_STTC, "[WARNING] Error from sttd");
1864
1865         /* check handle */
1866         if (NULL == client) {
1867                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to notify error : A handle is not valid");
1868                 return EINA_FALSE;
1869         }
1870
1871         if (NULL == stt_client_get_by_uid(client->uid))
1872                 return EINA_FALSE;
1873
1874         if (NULL != client->error_cb) {
1875                 stt_client_use_callback(client);
1876                 g_err_callback_status = true;
1877                 client->error_cb(client->stt, client->reason, client->error_user_data);
1878                 g_err_callback_status = false;
1879                 stt_client_not_use_callback(client);
1880                 SLOG(LOG_WARN, TAG_STTC, "[WARNING] Error callback is called : reason [%d]", client->reason);
1881         } else {
1882                 SLOG(LOG_WARN, TAG_STTC, "[WARNING] Error callback is null");
1883         }
1884
1885         return EINA_FALSE;
1886 }
1887
1888 int __stt_cb_error(int uid, int reason, char* err_msg)
1889 {
1890         if (-1 == uid) {
1891                 GList* client_list = NULL;
1892                 client_list = stt_client_get_client_list();
1893
1894                 GList *iter = NULL;
1895                 stt_client_s *data = NULL;
1896
1897                 if (g_list_length(client_list) > 0) {
1898                         /* Get a first item */
1899                         iter = g_list_first(client_list);
1900
1901                         while (NULL != iter) {
1902                                 data = iter->data;
1903
1904                                 data->reason = reason;
1905                                 data->internal_state = STT_INTERNAL_STATE_NONE;
1906                                 if (NULL != data->err_msg) {
1907                                         free(data->err_msg);
1908                                         data->err_msg = NULL;
1909                                 }
1910                                 if (NULL != err_msg)
1911                                         data->err_msg = strdup(err_msg);
1912
1913                                 SLOG(LOG_INFO, TAG_STTC, "internal state is initialized to 0");
1914
1915                                 if (NULL != data->error_cb) {
1916                                         ecore_timer_add(0, __stt_notify_error, data);
1917                                 } else {
1918                                         SLOG(LOG_WARN, TAG_STTC, "[WARNING] Error callback is null");
1919                                 }
1920
1921                                 if (STT_ERROR_SERVICE_RESET == reason) {
1922                                         SLOG(LOG_WARN, TAG_STTC, "[WARNING] Service reset");
1923
1924                                         data->current_state = STT_STATE_CREATED;
1925                                         if (0 != stt_prepare(data->stt)) {
1926                                                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to prepare");
1927                                         }
1928                                 }
1929
1930                                 /* Next item */
1931                                 iter = g_list_next(iter);
1932                         }
1933                 }
1934         } else {
1935                 stt_client_s* client = stt_client_get_by_uid(uid);
1936                 if (NULL == client) {
1937                         SLOG(LOG_ERROR, TAG_STTC, "Handle not found");
1938                         return -1;
1939                 }
1940
1941                 client->reason = reason;
1942                 client->internal_state = STT_INTERNAL_STATE_NONE;
1943                 if (NULL != client->err_msg) {
1944                         free(client->err_msg);
1945                         client->err_msg = NULL;
1946                 }
1947                 if (NULL != err_msg)
1948                         client->err_msg = strdup(err_msg);
1949
1950                 SLOG(LOG_INFO, TAG_STTC, "internal state is initialized to 0");
1951
1952                 if (NULL != client->error_cb) {
1953                         ecore_timer_add(0, __stt_notify_error, client);
1954                 } else {
1955                         SLOG(LOG_WARN, TAG_STTC, "[WARNING] Error callback is null");
1956                 }
1957
1958                 if (STT_ERROR_SERVICE_RESET == reason) {
1959                         SLOG(LOG_WARN, TAG_STTC, "[WARNING] Service reset");
1960
1961                         client->current_state = STT_STATE_CREATED;
1962                         if (0 != stt_prepare(client->stt)) {
1963                                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to prepare");
1964                         }
1965                 }
1966         }
1967
1968         return 0;
1969 }
1970
1971 static void __stt_notify_state_changed(void *data)
1972 {
1973         stt_client_s* client = (stt_client_s*)data;
1974
1975         /* check handle */
1976         if (NULL == client) {
1977                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to notify error : A handle is not valid");
1978                 return;
1979         }
1980
1981         if (NULL == stt_client_get_by_uid(client->uid)) {
1982                 return;
1983         }
1984
1985         if (STT_INTERNAL_STATE_STARTING == client->internal_state && STT_STATE_RECORDING == client->current_state) {
1986                 client->internal_state = STT_INTERNAL_STATE_NONE;
1987                 SLOG(LOG_DEBUG, TAG_STTC, "Internal state change to NONE");
1988         } else if (STT_INTERNAL_STATE_STOPPING == client->internal_state && STT_STATE_PROCESSING == client->current_state) {
1989                 client->internal_state = STT_INTERNAL_STATE_NONE;
1990                 SLOG(LOG_DEBUG, TAG_STTC, "Internal state change to NONE");
1991         } else if (STT_INTERNAL_STATE_CANCELING == client->internal_state && STT_STATE_READY == client->current_state) {
1992                 client->internal_state = STT_INTERNAL_STATE_NONE;
1993                 SLOG(LOG_DEBUG, TAG_STTC, "Internal state change to NONE");
1994         }
1995
1996         if (NULL != client->state_changed_cb) {
1997                 stt_client_use_callback(client);
1998                 client->state_changed_cb(client->stt, client->before_state,
1999                         client->current_state, client->state_changed_user_data);
2000                 stt_client_not_use_callback(client);
2001                 SLOG(LOG_DEBUG, TAG_STTC, "State changed callback is called");
2002         } else {
2003                 SLOG(LOG_WARN, TAG_STTC, "[WARNING] State changed callback is null");
2004         }
2005
2006         return;
2007 }
2008
2009 static Eina_Bool __stt_notify_result(void *data)
2010 {
2011         stt_client_s* client = (stt_client_s*)data;
2012
2013         /* check handle */
2014         if (NULL == client) {
2015                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to notify error : A handle is not valid");
2016                 return EINA_FALSE;
2017         }
2018
2019         if (NULL == stt_client_get_by_uid(client->uid)) {
2020                 return EINA_FALSE;
2021         }
2022
2023         if (NULL != client->recognition_result_cb) {
2024                 stt_client_use_callback(client);
2025                 client->recognition_result_cb(client->stt, client->event, (const char**)client->data_list, client->data_count,
2026                         client->msg, client->recognition_result_user_data);
2027                 stt_client_not_use_callback(client);
2028                 SLOG(LOG_DEBUG, TAG_STTC, "client recognition result callback called");
2029         } else {
2030                 SLOG(LOG_WARN, TAG_STTC, "[WARNING] User recognition result callback is NULL");
2031         }
2032
2033         if (NULL != client->msg) {
2034                 free(client->msg);
2035                 client->msg = NULL;
2036         }
2037
2038         if (NULL != client->data_list) {
2039                 char **temp = NULL;
2040                 temp = client->data_list;
2041
2042                 int i = 0;
2043                 for (i = 0; i < client->data_count; i++) {
2044                         if (NULL != temp[i]) {
2045                                 free(temp[i]);
2046                                 temp[i] = NULL;
2047                         } else {
2048                                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Result data is error");
2049                         }
2050                 }
2051                 free(client->data_list);
2052                 client->data_list = NULL;
2053         }
2054
2055         client->data_count = 0;
2056
2057         stt_config_mgr_remove_time_info_file();
2058
2059         if (STT_RESULT_EVENT_FINAL_RESULT == client->event || STT_RESULT_EVENT_ERROR == client->event) {
2060                 client->before_state = client->current_state;
2061                 client->current_state = STT_STATE_READY;
2062
2063                 if (NULL != client->state_changed_cb) {
2064                         ecore_main_loop_thread_safe_call_async(__stt_notify_state_changed, client);
2065                 } else {
2066                         SLOG(LOG_WARN, TAG_STTC, "[WARNING] State changed callback is null");
2067                 }
2068         }
2069
2070         return EINA_FALSE;
2071 }
2072
2073 int __stt_cb_result(int uid, int event, char** data, int data_count, const char* msg)
2074 {
2075         stt_client_s* client = NULL;
2076
2077         client = stt_client_get_by_uid(uid);
2078         if (NULL == client) {
2079                 SLOG(LOG_ERROR, TAG_STTC, "Handle is NOT valid");
2080                 return STT_ERROR_INVALID_PARAMETER;
2081         }
2082
2083         if (NULL != msg)
2084                 SLOG(LOG_DEBUG, TAG_STTC, "Recognition Result Message = %s", msg);
2085
2086         int i = 0;
2087         for (i = 0; i < data_count; i++) {
2088                 if (NULL != data[i])
2089                         SLOG(LOG_DEBUG, TAG_STTC, "Recognition Result[%d] = %s", i, data[i]);
2090         }
2091
2092         if (NULL != client->recognition_result_cb) {
2093                 client->event = event;
2094                 if (NULL != msg) {
2095                         client->msg = strdup(msg);
2096                 }
2097
2098                 client->data_count = data_count;
2099
2100                 if (data_count > 0) {
2101                         char **temp = NULL;
2102                         temp = (char**)calloc(data_count, sizeof(char*));
2103                         if (NULL == temp) {
2104                                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to allocate memory");
2105                                 return STT_ERROR_OUT_OF_MEMORY;
2106                         }
2107
2108                         for (i = 0; i < data_count; i++) {
2109                                 if (NULL != data[i])
2110                                         temp[i] = strdup(data[i]);
2111                                 else
2112                                         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Result data is error");
2113                         }
2114
2115                         client->data_list = temp;
2116                 }
2117         } else {
2118                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] User result callback is null");
2119         }
2120
2121         ecore_timer_add(0, __stt_notify_result, client);
2122
2123         return STT_ERROR_NONE;
2124 }
2125
2126 int __stt_cb_set_state(int uid, int state)
2127 {
2128         stt_client_s* client = stt_client_get_by_uid(uid);
2129         if (NULL == client) {
2130                 SLOG(LOG_ERROR, TAG_STTC, "Handle not found");
2131                 return -1;
2132         }
2133
2134         stt_state_e state_from_daemon = (stt_state_e)state;
2135
2136         if (client->current_state == state_from_daemon) {
2137                 SLOG(LOG_DEBUG, TAG_STTC, "Current state has already been %d", client->current_state);
2138                 return 0;
2139         }
2140
2141         client->before_state = client->current_state;
2142         client->current_state = state_from_daemon;
2143
2144         ecore_main_loop_thread_safe_call_async(__stt_notify_state_changed, client);
2145         return 0;
2146 }
2147
2148 static void __stt_notify_speech_status(void *data)
2149 {
2150         stt_client_s* client = (stt_client_s*)data;
2151
2152         /* check handle */
2153         if (NULL == client) {
2154                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to notify speech status : A handle is not valid");
2155                 return;
2156         }
2157
2158         if (NULL == stt_client_get_by_uid(client->uid)) {
2159                 return;
2160         }
2161
2162         if (NULL != client->speech_status_cb) {
2163                 stt_client_use_callback(client);
2164                 client->speech_status_cb(client->stt, client->speech_status, client->speech_status_user_data);
2165                 stt_client_not_use_callback(client);
2166                 SLOG(LOG_DEBUG, TAG_STTC, "Speech status callback is called");
2167         } else {
2168                 SLOG(LOG_WARN, TAG_STTC, "[WARNING] Speech status callback is null");
2169         }
2170
2171         return;
2172 }
2173
2174 int __stt_cb_speech_status(int uid, int status)
2175 {
2176         stt_client_s* client = stt_client_get_by_uid(uid);
2177         if (NULL == client) {
2178                 SLOG(LOG_ERROR, TAG_STTC, "Handle not found");
2179                 return -1;
2180         }
2181
2182         client->speech_status = status;
2183
2184         ecore_main_loop_thread_safe_call_async(__stt_notify_speech_status, client);
2185         return 0;
2186 }
2187
2188 int stt_set_recognition_result_cb(stt_h stt, stt_recognition_result_cb callback, void* user_data)
2189 {
2190         stt_client_s* client = NULL;
2191         if (0 != __stt_get_feature_enabled()) {
2192                 return STT_ERROR_NOT_SUPPORTED;
2193         }
2194         if (0 != __stt_check_privilege()) {
2195                 return STT_ERROR_PERMISSION_DENIED;
2196         }
2197         if (0 != __stt_check_handle(stt, &client)) {
2198                 return STT_ERROR_INVALID_PARAMETER;
2199         }
2200
2201         if (callback == NULL)
2202                 return STT_ERROR_INVALID_PARAMETER;
2203
2204         if (STT_STATE_CREATED != client->current_state) {
2205                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Current state(%d) is not 'Created'", client->current_state);
2206                 return STT_ERROR_INVALID_STATE;
2207         }
2208
2209         client->recognition_result_cb = callback;
2210         client->recognition_result_user_data = user_data;
2211
2212         return 0;
2213 }
2214
2215 int stt_unset_recognition_result_cb(stt_h stt)
2216 {
2217         stt_client_s* client = NULL;
2218         if (0 != __stt_get_feature_enabled()) {
2219                 return STT_ERROR_NOT_SUPPORTED;
2220         }
2221         if (0 != __stt_check_privilege()) {
2222                 return STT_ERROR_PERMISSION_DENIED;
2223         }
2224         if (0 != __stt_check_handle(stt, &client)) {
2225                 return STT_ERROR_INVALID_PARAMETER;
2226         }
2227
2228         if (STT_STATE_CREATED != client->current_state) {
2229                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Current state(%d) is not 'Created'", client->current_state);
2230                 return STT_ERROR_INVALID_STATE;
2231         }
2232
2233         client->recognition_result_cb = NULL;
2234         client->recognition_result_user_data = NULL;
2235
2236         return 0;
2237 }
2238
2239 int stt_set_state_changed_cb(stt_h stt, stt_state_changed_cb callback, void* user_data)
2240 {
2241         stt_client_s* client = NULL;
2242         if (0 != __stt_get_feature_enabled()) {
2243                 return STT_ERROR_NOT_SUPPORTED;
2244         }
2245         if (0 != __stt_check_privilege()) {
2246                 return STT_ERROR_PERMISSION_DENIED;
2247         }
2248         if (0 != __stt_check_handle(stt, &client)) {
2249                 return STT_ERROR_INVALID_PARAMETER;
2250         }
2251
2252         if (NULL == callback)
2253                 return STT_ERROR_INVALID_PARAMETER;
2254
2255         if (STT_STATE_CREATED != client->current_state) {
2256                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Current state(%d) is not 'Created'", client->current_state);
2257                 return STT_ERROR_INVALID_STATE;
2258         }
2259
2260         client->state_changed_cb = callback;
2261         client->state_changed_user_data = user_data;
2262
2263         return 0;
2264 }
2265
2266 int stt_unset_state_changed_cb(stt_h stt)
2267 {
2268         stt_client_s* client = NULL;
2269         if (0 != __stt_get_feature_enabled()) {
2270                 return STT_ERROR_NOT_SUPPORTED;
2271         }
2272         if (0 != __stt_check_privilege()) {
2273                 return STT_ERROR_PERMISSION_DENIED;
2274         }
2275         if (0 != __stt_check_handle(stt, &client)) {
2276                 return STT_ERROR_INVALID_PARAMETER;
2277         }
2278
2279         if (STT_STATE_CREATED != client->current_state) {
2280                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Current state(%d) is not 'Created'", client->current_state);
2281                 return STT_ERROR_INVALID_STATE;
2282         }
2283
2284         client->state_changed_cb = NULL;
2285         client->state_changed_user_data = NULL;
2286
2287         return 0;
2288 }
2289
2290 int stt_set_error_cb(stt_h stt, stt_error_cb callback, void* user_data)
2291 {
2292         stt_client_s* client = NULL;
2293         if (0 != __stt_get_feature_enabled()) {
2294                 return STT_ERROR_NOT_SUPPORTED;
2295         }
2296         if (0 != __stt_check_privilege()) {
2297                 return STT_ERROR_PERMISSION_DENIED;
2298         }
2299         if (0 != __stt_check_handle(stt, &client)) {
2300                 return STT_ERROR_INVALID_PARAMETER;
2301         }
2302
2303         if (NULL == callback)
2304                 return STT_ERROR_INVALID_PARAMETER;
2305
2306         if (STT_STATE_CREATED != client->current_state) {
2307                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Current state(%d) is not 'Created'", client->current_state);
2308                 return STT_ERROR_INVALID_STATE;
2309         }
2310
2311         client->error_cb = callback;
2312         client->error_user_data = user_data;
2313
2314         return 0;
2315 }
2316
2317 int stt_unset_error_cb(stt_h stt)
2318 {
2319         stt_client_s* client = NULL;
2320         if (0 != __stt_get_feature_enabled()) {
2321                 return STT_ERROR_NOT_SUPPORTED;
2322         }
2323         if (0 != __stt_check_privilege()) {
2324                 return STT_ERROR_PERMISSION_DENIED;
2325         }
2326         if (0 != __stt_check_handle(stt, &client)) {
2327                 return STT_ERROR_INVALID_PARAMETER;
2328         }
2329
2330         if (STT_STATE_CREATED != client->current_state) {
2331                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Current state(%d) is not 'Created'", client->current_state);
2332                 return STT_ERROR_INVALID_STATE;
2333         }
2334
2335         client->error_cb = NULL;
2336         client->error_user_data = NULL;
2337
2338         return 0;
2339 }
2340
2341 int stt_set_default_language_changed_cb(stt_h stt, stt_default_language_changed_cb callback, void* user_data)
2342 {
2343         stt_client_s* client = NULL;
2344         if (0 != __stt_get_feature_enabled()) {
2345                 return STT_ERROR_NOT_SUPPORTED;
2346         }
2347         if (0 != __stt_check_privilege()) {
2348                 return STT_ERROR_PERMISSION_DENIED;
2349         }
2350         if (0 != __stt_check_handle(stt, &client)) {
2351                 return STT_ERROR_INVALID_PARAMETER;
2352         }
2353
2354         if (NULL == callback)
2355                 return STT_ERROR_INVALID_PARAMETER;
2356
2357         if (STT_STATE_CREATED != client->current_state) {
2358                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Current state(%d) is not 'Created'", client->current_state);
2359                 return STT_ERROR_INVALID_STATE;
2360         }
2361
2362         client->default_lang_changed_cb = callback;
2363         client->default_lang_changed_user_data = user_data;
2364
2365         return 0;
2366 }
2367
2368 int stt_unset_default_language_changed_cb(stt_h stt)
2369 {
2370         stt_client_s* client = NULL;
2371         if (0 != __stt_get_feature_enabled()) {
2372                 return STT_ERROR_NOT_SUPPORTED;
2373         }
2374         if (0 != __stt_check_privilege()) {
2375                 return STT_ERROR_PERMISSION_DENIED;
2376         }
2377         if (0 != __stt_check_handle(stt, &client)) {
2378                 return STT_ERROR_INVALID_PARAMETER;
2379         }
2380
2381         if (STT_STATE_CREATED != client->current_state) {
2382                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Current state(%d) is not 'Created'", client->current_state);
2383                 return STT_ERROR_INVALID_STATE;
2384         }
2385
2386         client->default_lang_changed_cb = NULL;
2387         client->default_lang_changed_user_data = NULL;
2388
2389         return 0;
2390 }
2391
2392 int stt_set_engine_changed_cb(stt_h stt, stt_engine_changed_cb callback, void* user_data)
2393 {
2394         stt_client_s* client = NULL;
2395         if (0 != __stt_get_feature_enabled()) {
2396                 return STT_ERROR_NOT_SUPPORTED;
2397         }
2398         if (0 != __stt_check_privilege()) {
2399                 return STT_ERROR_PERMISSION_DENIED;
2400         }
2401         if (0 != __stt_check_handle(stt, &client)) {
2402                 return STT_ERROR_INVALID_PARAMETER;
2403         }
2404
2405         if (NULL == callback)
2406                 return STT_ERROR_INVALID_PARAMETER;
2407
2408         if (STT_STATE_CREATED != client->current_state) {
2409                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Current state(%d) is not 'Created'", client->current_state);
2410                 return STT_ERROR_INVALID_STATE;
2411         }
2412
2413         client->engine_changed_cb = callback;
2414         client->engine_changed_user_data = user_data;
2415
2416         return 0;
2417 }
2418
2419 int stt_unset_engine_changed_cb(stt_h stt)
2420 {
2421         stt_client_s* client = NULL;
2422         if (0 != __stt_get_feature_enabled()) {
2423                 return STT_ERROR_NOT_SUPPORTED;
2424         }
2425         if (0 != __stt_check_privilege()) {
2426                 return STT_ERROR_PERMISSION_DENIED;
2427         }
2428         if (0 != __stt_check_handle(stt, &client)) {
2429                 return STT_ERROR_INVALID_PARAMETER;
2430         }
2431
2432         if (STT_STATE_CREATED != client->current_state) {
2433                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Current state(%d) is not 'Created'", client->current_state);
2434                 return STT_ERROR_INVALID_STATE;
2435         }
2436
2437         client->engine_changed_cb = NULL;
2438         client->engine_changed_user_data = NULL;
2439
2440         return 0;
2441 }
2442
2443 int stt_set_speech_status_cb(stt_h stt, stt_speech_status_cb callback, void* user_data)
2444 {
2445         stt_client_s* client = NULL;
2446         if (0 != __stt_get_feature_enabled()) {
2447                 return STT_ERROR_NOT_SUPPORTED;
2448         }
2449         if (0 != __stt_check_privilege()) {
2450                 return STT_ERROR_PERMISSION_DENIED;
2451         }
2452         if (0 != __stt_check_handle(stt, &client)) {
2453                 return STT_ERROR_INVALID_PARAMETER;
2454         }
2455
2456         if (NULL == callback)
2457                 return STT_ERROR_INVALID_PARAMETER;
2458
2459         if (STT_STATE_CREATED != client->current_state) {
2460                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Current state(%d) is not 'Created'", client->current_state);
2461                 return STT_ERROR_INVALID_STATE;
2462         }
2463
2464         client->speech_status_cb = callback;
2465         client->speech_status_user_data = user_data;
2466
2467         return 0;
2468 }
2469
2470 int stt_unset_speech_status_cb(stt_h stt)
2471 {
2472         stt_client_s* client = NULL;
2473         if (0 != __stt_get_feature_enabled()) {
2474                 return STT_ERROR_NOT_SUPPORTED;
2475         }
2476         if (0 != __stt_check_privilege()) {
2477                 return STT_ERROR_PERMISSION_DENIED;
2478         }
2479         if (0 != __stt_check_handle(stt, &client)) {
2480                 return STT_ERROR_INVALID_PARAMETER;
2481         }
2482
2483         if (STT_STATE_CREATED != client->current_state) {
2484                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Current state(%d) is not 'Created'", client->current_state);
2485                 return STT_ERROR_INVALID_STATE;
2486         }
2487
2488         client->speech_status_cb = NULL;
2489         client->speech_status_user_data = NULL;
2490
2491         return 0;
2492 }