client/stt_client.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
  15 #include "stt_client.h"
  16
  17 #define MUTEX_TIME 3
  18
  19 /* Max number of handle */
  20 static const int g_max_handle = 999;
  21 /* allocated handle */
  22 static int g_allocated_handle = 0;
  23 /* client list */
  24 static GList *g_client_list = NULL;
  25
  26
  27 /* private functions */
  28 static int __client_generate_uid(int pid)
  29 {
  30         g_allocated_handle++;
  31
  32         if (g_allocated_handle > g_max_handle) {
  33                 g_allocated_handle = 1;
  34         }
  35
  36         /* generate uid, handle number should be smaller than 1000 */
  37         return pid * 1000 + g_allocated_handle;
  38 }
  39
  40 int stt_client_new(stt_h* stt)
  41 {
  42         stt_client_s *client = NULL;
  43
  44         client = (stt_client_s*)calloc(1, sizeof(stt_client_s));
  45         if (NULL == client) {
  46                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to allocate memory");
  47                 return STT_ERROR_OUT_OF_MEMORY;
  48         }
  49
  50         stt_h temp = (stt_h)calloc(1, sizeof(struct stt_s));
  51         if (NULL == temp) {
  52                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to allocate memory");
  53                 free(client);
  54                 return STT_ERROR_OUT_OF_MEMORY;
  55         }
  56         temp->handle = __client_generate_uid(getpid());
  57
  58         /* initialize client data */
  59         client->stt = temp;
  60         client->pid = getpid();
  61         client->uid = temp->handle;
  62
  63         client->recognition_result_cb = NULL;
  64         client->recognition_result_user_data = NULL;
  65         client->state_changed_cb = NULL;
  66         client->state_changed_user_data = NULL;
  67         client->error_cb = NULL;
  68         client->error_user_data = NULL;
  69         client->default_lang_changed_cb = NULL;
  70         client->default_lang_changed_user_data = NULL;
  71         client->speech_status_cb = NULL;
  72         client->speech_status_user_data = NULL;
  73
  74         client->current_engine_id = NULL;
  75         client->credential = NULL;
  76
  77         client->silence_supported = false;
  78         client->silence = STT_OPTION_SILENCE_DETECTION_AUTO;
  79
  80         client->event = 0;
  81         client->data_list = NULL;
  82         client->data_count = 0;
  83         client->msg = NULL;
  84
  85         client->reason = 0;
  86         client->err_msg = NULL;
  87
  88         client->before_state = STT_STATE_CREATED;
  89         client->current_state = STT_STATE_CREATED;
  90
  91         client->internal_state = STT_INTERNAL_STATE_NONE;
  92
  93         client->speech_status = -1;
  94
  95         client->cb_ref_count = 0;
  96
  97         client->internal = false;
  98
  99         g_client_list = g_list_append(g_client_list, client);
 100
 101         *stt = temp;
 102
 103         return 0;
 104 }
 105
 106 int stt_client_destroy(stt_h stt)
 107 {
 108         if (stt == NULL) {
 109                 SLOG(LOG_ERROR, TAG_STTC, "Input parameter is NULL");
 110                 return 0;
 111         }
 112
 113         GList *iter = NULL;
 114         stt_client_s *data = NULL;
 115
 116         /* if list have item */
 117         if (g_list_length(g_client_list) > 0) {
 118                 /* Get a first item */
 119                 iter = g_list_first(g_client_list);
 120
 121                 while (NULL != iter) {
 122                         data = iter->data;
 123                         if (stt->handle == data->stt->handle) {
 124                                 g_client_list = g_list_remove_link(g_client_list, iter);
 125
 126                                 while (0 != data->cb_ref_count) {
 127                                         /* wait for release callback function */
 128                                 }
 129
 130                                 if (NULL != data->current_engine_id) {
 131                                         free(data->current_engine_id);
 132                                 }
 133
 134                                 if (NULL != data->err_msg) {
 135                                         free(data->err_msg);
 136                                         data->err_msg = NULL;
 137                                 }
 138
 139                                 if (NULL != data->credential) {
 140                                         free(data->credential);
 141                                         data->credential = NULL;
 142                                 }
 143
 144                                 free(data);
 145                                 free(stt);
 146                                 data = NULL;
 147                                 stt = NULL;
 148
 149                                 return 0;
 150                         }
 151
 152                         /* Next item */
 153                         iter = g_list_next(iter);
 154                 }
 155         }
 156
 157         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] client Not founded");
 158
 159         return -1;
 160 }
 161
 162
 163 stt_client_s* stt_client_get(stt_h stt)
 164 {
 165         if (NULL == stt) {
 166                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Input parameter is NULL");
 167                 return NULL;
 168         }
 169
 170         GList *iter = NULL;
 171         stt_client_s *data = NULL;
 172
 173         if (g_list_length(g_client_list) > 0) {
 174                 /* Get a first item */
 175                 iter = g_list_first(g_client_list);
 176
 177                 while (NULL != iter) {
 178                         data = iter->data;
 179                         if (NULL != data) {
 180                                 if (stt->handle == data->stt->handle)
 181                                         return data;
 182                         }
 183                         /* Next item */
 184                         iter = g_list_next(iter);
 185                 }
 186         }
 187
 188         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to get client by stt");
 189
 190         return NULL;
 191 }
 192
 193 stt_client_s* stt_client_get_by_uid(const int uid)
 194 {
 195         if (uid < 0) {
 196                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] out of range : handle");
 197                 return NULL;
 198         }
 199
 200         GList *iter = NULL;
 201         stt_client_s *data = NULL;
 202
 203         if (g_list_length(g_client_list) > 0) {
 204                 /* Get a first item */
 205                 iter = g_list_first(g_client_list);
 206
 207                 while (NULL != iter) {
 208                         data = iter->data;
 209                         if (uid == data->uid) {
 210                                 return data;
 211                         }
 212
 213                         /* Next item */
 214                         iter = g_list_next(iter);
 215                 }
 216         }
 217
 218         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to get client by uid");
 219
 220         return NULL;
 221 }
 222
 223 int stt_client_get_size()
 224 {
 225         return g_list_length(g_client_list);
 226 }
 227
 228 int stt_client_use_callback(stt_client_s* client)
 229 {
 230         client->cb_ref_count++;
 231         return 0;
 232 }
 233
 234 int stt_client_not_use_callback(stt_client_s* client)
 235 {
 236         client->cb_ref_count--;
 237         return 0;
 238 }
 239
 240 int stt_client_get_use_callback(stt_client_s* client)
 241 {
 242         return client->cb_ref_count;
 243 }
 244
 245 GList* stt_client_get_client_list()
 246 {
 247         return g_client_list;
 248 }