client/stt_client.c

   1 /*
   2 *  Copyright (c) 2011-2014 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
  72         client->current_engine_id = NULL;
  73         client->credential = NULL;
  74
  75         client->silence_supported = false;
  76         client->silence = STT_OPTION_SILENCE_DETECTION_AUTO;
  77
  78         client->event = 0;
  79         client->data_list = NULL;
  80         client->data_count = 0;
  81         client->msg = NULL;
  82
  83         client->reason = 0;
  84         client->err_msg = NULL;
  85
  86         client->before_state = STT_STATE_CREATED;
  87         client->current_state = STT_STATE_CREATED;
  88
  89         client->internal_state = STT_INTERNAL_STATE_NONE;
  90
  91         client->cb_ref_count = 0;
  92
  93         g_client_list = g_list_append(g_client_list, client);
  94
  95         *stt = temp;
  96
  97         return 0;
  98 }
  99
 100 int stt_client_destroy(stt_h stt)
 101 {
 102         if (stt == NULL) {
 103                 SLOG(LOG_ERROR, TAG_STTC, "Input parameter is NULL");
 104                 return 0;
 105         }
 106
 107         GList *iter = NULL;
 108         stt_client_s *data = NULL;
 109
 110         /* if list have item */
 111         if (g_list_length(g_client_list) > 0) {
 112                 /* Get a first item */
 113                 iter = g_list_first(g_client_list);
 114
 115                 while (NULL != iter) {
 116                         data = iter->data;
 117                         if (stt->handle == data->stt->handle) {
 118                                 g_client_list = g_list_remove_link(g_client_list, iter);
 119
 120                                 while (0 != data->cb_ref_count) {
 121                                         /* wait for release callback function */
 122                                 }
 123
 124                                 if (NULL != data->current_engine_id) {
 125                                         free(data->current_engine_id);
 126                                 }
 127
 128                                 if (NULL != data->err_msg) {
 129                                         free(data->err_msg);
 130                                 }
 131
 132                                 if (NULL != data->credential) {
 133                                         free(data->credential);
 134                                 }
 135
 136                                 free(data);
 137                                 free(stt);
 138
 139                                 return 0;
 140                         }
 141
 142                         /* Next item */
 143                         iter = g_list_next(iter);
 144                 }
 145         }
 146
 147         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] client Not founded");
 148
 149         return -1;
 150 }
 151
 152
 153 stt_client_s* stt_client_get(stt_h stt)
 154 {
 155         if (NULL == stt) {
 156                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Input parameter is NULL");
 157                 return NULL;
 158         }
 159
 160         GList *iter = NULL;
 161         stt_client_s *data = NULL;
 162
 163         if (g_list_length(g_client_list) > 0) {
 164                 /* Get a first item */
 165                 iter = g_list_first(g_client_list);
 166
 167                 while (NULL != iter) {
 168                         data = iter->data;
 169                         if (NULL != data) {
 170                                 if (stt->handle == data->stt->handle)
 171                                         return data;
 172                         }
 173                         /* Next item */
 174                         iter = g_list_next(iter);
 175                 }
 176         }
 177
 178         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to get client by stt");
 179
 180         return NULL;
 181 }
 182
 183 stt_client_s* stt_client_get_by_uid(const int uid)
 184 {
 185         if (uid < 0) {
 186                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] out of range : handle");
 187                 return NULL;
 188         }
 189
 190         GList *iter = NULL;
 191         stt_client_s *data = NULL;
 192
 193         if (g_list_length(g_client_list) > 0) {
 194                 /* Get a first item */
 195                 iter = g_list_first(g_client_list);
 196
 197                 while (NULL != iter) {
 198                         data = iter->data;
 199                         if (uid == data->uid) {
 200                                 return data;
 201                         }
 202
 203                         /* Next item */
 204                         iter = g_list_next(iter);
 205                 }
 206         }
 207
 208         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to get client by uid");
 209
 210         return NULL;
 211 }
 212
 213 int stt_client_get_size()
 214 {
 215         return g_list_length(g_client_list);
 216 }
 217
 218 int stt_client_use_callback(stt_client_s* client)
 219 {
 220         client->cb_ref_count++;
 221         return 0;
 222 }
 223
 224 int stt_client_not_use_callback(stt_client_s* client)
 225 {
 226         client->cb_ref_count--;
 227         return 0;
 228 }
 229
 230 int stt_client_get_use_callback(stt_client_s* client)
 231 {
 232         return client->cb_ref_count;
 233 }
 234
 235 GList* stt_client_get_client_list()
 236 {
 237         return g_client_list;
 238 }