Merge changes Ie91a9d92,I08af0ef1 into tizen
[platform/core/uifw/stt.git] / 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
74         client->silence_supported = false;
75         client->silence = STT_OPTION_SILENCE_DETECTION_AUTO;
76
77         client->event = 0;
78         client->data_list = NULL;
79         client->data_count = 0;
80         client->msg = NULL;
81
82         client->before_state = STT_STATE_CREATED;
83         client->current_state = STT_STATE_CREATED;
84
85         client->internal_state = STT_INTERNAL_STATE_NONE;
86
87         client->cb_ref_count = 0;
88
89         g_client_list = g_list_append(g_client_list, client);
90
91         *stt = temp;
92
93         return 0;
94 }
95
96 int stt_client_destroy(stt_h stt)
97 {
98         if (stt == NULL) {
99                 SLOG(LOG_ERROR, TAG_STTC, "Input parameter is NULL");
100                 return 0;
101         }
102
103         GList *iter = NULL;
104         stt_client_s *data = NULL;
105
106         /* if list have item */
107         if (g_list_length(g_client_list) > 0) {
108                 /* Get a first item */
109                 iter = g_list_first(g_client_list);
110
111                 while (NULL != iter) {
112                         data = iter->data;
113                         if (stt->handle == data->stt->handle) {
114                                 g_client_list = g_list_remove_link(g_client_list, iter);
115
116                                 while (0 != data->cb_ref_count) {
117                                         /* wait for release callback function */
118                                 }
119
120                                 if (NULL != data->current_engine_id) {
121                                         free(data->current_engine_id);
122                                 }
123
124                                 free(data);
125                                 free(stt);
126
127                                 return 0;
128                         }
129
130                         /* Next item */
131                         iter = g_list_next(iter);
132                 }
133         }
134
135         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] client Not founded");
136
137         return -1;
138 }
139
140
141 stt_client_s* stt_client_get(stt_h stt)
142 {
143         if (NULL == stt) {
144                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Input parameter is NULL");
145                 return NULL;
146         }
147
148         GList *iter = NULL;
149         stt_client_s *data = NULL;
150
151         if (g_list_length(g_client_list) > 0) {
152                 /* Get a first item */
153                 iter = g_list_first(g_client_list);
154
155                 while (NULL != iter) {
156                         data = iter->data;
157                         if (NULL != data) {
158                                 if (stt->handle == data->stt->handle)
159                                         return data;
160                         }
161                         /* Next item */
162                         iter = g_list_next(iter);
163                 }
164         }
165
166         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to get client by stt");
167
168         return NULL;
169 }
170
171 stt_client_s* stt_client_get_by_uid(const int uid)
172 {
173         if (uid < 0) {
174                 SLOG(LOG_ERROR, TAG_STTC, "[ERROR] out of range : handle");
175                 return NULL;
176         }
177
178         GList *iter = NULL;
179         stt_client_s *data = NULL;
180
181         if (g_list_length(g_client_list) > 0) {
182                 /* Get a first item */
183                 iter = g_list_first(g_client_list);
184
185                 while (NULL != iter) {
186                         data = iter->data;
187                         if (uid == data->uid) {
188                                 return data;
189                         }
190
191                         /* Next item */
192                         iter = g_list_next(iter);
193                 }
194         }
195
196         SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to get client by uid");
197
198         return NULL;
199 }
200
201 int stt_client_get_size()
202 {
203         return g_list_length(g_client_list);
204 }
205
206 int stt_client_use_callback(stt_client_s* client)
207 {
208         client->cb_ref_count++;
209         return 0;
210 }
211
212 int stt_client_not_use_callback(stt_client_s* client)
213 {
214         client->cb_ref_count--;
215         return 0;
216 }
217
218 int stt_client_get_use_callback(stt_client_s* client)
219 {
220         return client->cb_ref_count;
221 }
222
223 GList* stt_client_get_client_list()
224 {
225         return g_client_list;
226 }