1 /****************************************************************************** 2 * 3 * Copyright (C) 2003-2012 Broadcom Corporation 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19 /****************************************************************************** 20 * 21 * This is the implementation of the API for the audio gateway (AG) 22 * subsystem of BTA, Broadcom's Bluetooth application layer for mobile 23 * phones. 24 * 25 ******************************************************************************/ 26 27 #include "bta_api.h" 28 #include "bd.h" 29 #include "bta_sys.h" 30 #include "bta_ag_api.h" 31 #include "bta_ag_int.h" 32 #include "gki.h" 33 #include <string.h> 34 35 /***************************************************************************** 36 ** Constants 37 *****************************************************************************/ 38 39 static const tBTA_SYS_REG bta_ag_reg = 40 { 41 bta_ag_hdl_event, 42 BTA_AgDisable 43 }; 44 45 /******************************************************************************* 46 ** 47 ** Function BTA_AgEnable 48 ** 49 ** Description Enable the audio gateway service. When the enable 50 ** operation is complete the callback function will be 51 ** called with a BTA_AG_ENABLE_EVT. This function must 52 ** be called before other function in the AG API are 53 ** called. 54 ** 55 ** Returns BTA_SUCCESS if OK, BTA_FAILURE otherwise. 56 ** 57 *******************************************************************************/ 58 tBTA_STATUS BTA_AgEnable(tBTA_AG_PARSE_MODE parse_mode, tBTA_AG_CBACK *p_cback) 59 { 60 tBTA_AG_API_ENABLE *p_buf; 61 UINT8 idx; 62 63 /* Error if AG is already enabled, or AG is in the middle of disabling. */ 64 for (idx = 0; idx < BTA_AG_NUM_SCB; idx++) 65 { 66 if (bta_ag_cb.scb[idx].in_use) 67 { 68 APPL_TRACE_ERROR0 ("BTA_AgEnable: FAILED, AG already enabled."); 69 return BTA_FAILURE; 70 } 71 } 72 73 /* register with BTA system manager */ 74 GKI_sched_lock(); 75 bta_sys_register(BTA_ID_AG, &bta_ag_reg); 76 GKI_sched_unlock(); 77 78 if ((p_buf = (tBTA_AG_API_ENABLE *) GKI_getbuf(sizeof(tBTA_AG_API_ENABLE))) != NULL) 79 { 80 p_buf->hdr.event = BTA_AG_API_ENABLE_EVT; 81 p_buf->parse_mode = parse_mode; 82 p_buf->p_cback = p_cback; 83 bta_sys_sendmsg(p_buf); 84 } 85 86 return BTA_SUCCESS; 87 88 } 89 90 /******************************************************************************* 91 ** 92 ** Function BTA_AgDisable 93 ** 94 ** Description Disable the audio gateway service 95 ** 96 ** 97 ** Returns void 98 ** 99 *******************************************************************************/ 100 void BTA_AgDisable(void) 101 { 102 BT_HDR *p_buf; 103 104 if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL) 105 { 106 p_buf->event = BTA_AG_API_DISABLE_EVT; 107 bta_sys_sendmsg(p_buf); 108 } 109 } 110 111 /******************************************************************************* 112 ** 113 ** Function BTA_AgRegister 114 ** 115 ** Description Register an Audio Gateway service. 116 ** 117 ** 118 ** Returns void 119 ** 120 *******************************************************************************/ 121 void BTA_AgRegister(tBTA_SERVICE_MASK services, tBTA_SEC sec_mask,tBTA_AG_FEAT features, 122 char * p_service_names[], UINT8 app_id) 123 { 124 tBTA_AG_API_REGISTER *p_buf; 125 int i; 126 127 if ((p_buf = (tBTA_AG_API_REGISTER *) GKI_getbuf(sizeof(tBTA_AG_API_REGISTER))) != NULL) 128 { 129 p_buf->hdr.event = BTA_AG_API_REGISTER_EVT; 130 p_buf->features = features; 131 p_buf->sec_mask = sec_mask; 132 p_buf->services = services; 133 p_buf->app_id = app_id; 134 for (i = 0; i < BTA_AG_NUM_IDX; i++) 135 { 136 if(p_service_names[i]) 137 { 138 BCM_STRNCPY_S(p_buf->p_name[i], BTA_SERVICE_NAME_LEN+1, p_service_names[i], BTA_SERVICE_NAME_LEN); 139 p_buf->p_name[i][BTA_SERVICE_NAME_LEN] = 0; 140 } 141 else 142 { 143 p_buf->p_name[i][0] = 0; 144 } 145 } 146 bta_sys_sendmsg(p_buf); 147 } 148 } 149 150 /******************************************************************************* 151 ** 152 ** Function BTA_AgDeregister 153 ** 154 ** Description Deregister an audio gateway service. 155 ** 156 ** 157 ** Returns void 158 ** 159 *******************************************************************************/ 160 void BTA_AgDeregister(UINT16 handle) 161 { 162 BT_HDR *p_buf; 163 164 if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL) 165 { 166 p_buf->event = BTA_AG_API_DEREGISTER_EVT; 167 p_buf->layer_specific = handle; 168 bta_sys_sendmsg(p_buf); 169 } 170 } 171 172 /******************************************************************************* 173 ** 174 ** Function BTA_AgOpen 175 ** 176 ** Description Opens a connection to a headset or hands-free device. 177 ** When connection is open callback function is called 178 ** with a BTA_AG_OPEN_EVT. Only the data connection is 179 ** opened. The audio connection is not opened. 180 ** 181 ** 182 ** Returns void 183 ** 184 *******************************************************************************/ 185 void BTA_AgOpen(UINT16 handle, BD_ADDR bd_addr, tBTA_SEC sec_mask, tBTA_SERVICE_MASK services) 186 { 187 tBTA_AG_API_OPEN *p_buf; 188 189 if ((p_buf = (tBTA_AG_API_OPEN *) GKI_getbuf(sizeof(tBTA_AG_API_OPEN))) != NULL) 190 { 191 p_buf->hdr.event = BTA_AG_API_OPEN_EVT; 192 p_buf->hdr.layer_specific = handle; 193 bdcpy(p_buf->bd_addr, bd_addr); 194 p_buf->services = services; 195 p_buf->sec_mask = sec_mask; 196 bta_sys_sendmsg(p_buf); 197 } 198 } 199 200 /******************************************************************************* 201 ** 202 ** Function BTA_AgClose 203 ** 204 ** Description Close the current connection to a headset or a handsfree 205 ** Any current audio connection will also be closed. 206 ** 207 ** 208 ** Returns void 209 ** 210 *******************************************************************************/ 211 void BTA_AgClose(UINT16 handle) 212 { 213 BT_HDR *p_buf; 214 215 if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL) 216 { 217 p_buf->event = BTA_AG_API_CLOSE_EVT; 218 p_buf->layer_specific = handle; 219 bta_sys_sendmsg(p_buf); 220 } 221 } 222 223 /******************************************************************************* 224 ** 225 ** Function BTA_AgAudioOpen 226 ** 227 ** Description Opens an audio connection to the currently connected 228 ** headset or hnadsfree. 229 ** 230 ** 231 ** Returns void 232 ** 233 *******************************************************************************/ 234 void BTA_AgAudioOpen(UINT16 handle) 235 { 236 BT_HDR *p_buf; 237 238 if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL) 239 { 240 p_buf->event = BTA_AG_API_AUDIO_OPEN_EVT; 241 p_buf->layer_specific = handle; 242 bta_sys_sendmsg(p_buf); 243 } 244 } 245 246 /******************************************************************************* 247 ** 248 ** Function BTA_AgAudioClose 249 ** 250 ** Description Close the currently active audio connection to a headset 251 ** or hnadsfree. The data connection remains open 252 ** 253 ** 254 ** Returns void 255 ** 256 *******************************************************************************/ 257 void BTA_AgAudioClose(UINT16 handle) 258 { 259 BT_HDR *p_buf; 260 261 if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL) 262 { 263 p_buf->event = BTA_AG_API_AUDIO_CLOSE_EVT; 264 p_buf->layer_specific = handle; 265 bta_sys_sendmsg(p_buf); 266 } 267 } 268 269 270 /******************************************************************************* 271 ** 272 ** Function BTA_AgResult 273 ** 274 ** Description Send an AT result code to a headset or hands-free device. 275 ** This function is only used when the AG parse mode is set 276 ** to BTA_AG_PARSE. 277 ** 278 ** 279 ** Returns void 280 ** 281 *******************************************************************************/ 282 void BTA_AgResult(UINT16 handle, tBTA_AG_RES result, tBTA_AG_RES_DATA *p_data) 283 { 284 tBTA_AG_API_RESULT *p_buf; 285 286 if ((p_buf = (tBTA_AG_API_RESULT *) GKI_getbuf(sizeof(tBTA_AG_API_RESULT))) != NULL) 287 { 288 p_buf->hdr.event = BTA_AG_API_RESULT_EVT; 289 p_buf->hdr.layer_specific = handle; 290 p_buf->result = result; 291 if(p_data) 292 { 293 memcpy(&p_buf->data, p_data, sizeof(p_buf->data)); 294 } 295 bta_sys_sendmsg(p_buf); 296 } 297 } 298 299 /******************************************************************************* 300 ** 301 ** Function BTA_AgSetCodec 302 ** 303 ** Description Specify the codec type to be used for the subsequent 304 ** audio connection. 305 ** 306 ** 307 ** 308 ** Returns void 309 ** 310 *******************************************************************************/ 311 void BTA_AgSetCodec(UINT16 handle, tBTA_AG_PEER_CODEC codec) 312 { 313 tBTA_AG_API_SETCODEC *p_buf; 314 315 if ((p_buf = (tBTA_AG_API_SETCODEC *) GKI_getbuf(sizeof(tBTA_AG_API_SETCODEC))) != NULL) 316 { 317 p_buf->hdr.event = BTA_AG_API_SETCODEC_EVT; 318 p_buf->hdr.layer_specific = handle; 319 p_buf->codec = codec; 320 bta_sys_sendmsg(p_buf); 321 } 322 } 323 324
