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_ERROR ("BTA_AgEnable: FAILED, AG already enabled."); 69 return BTA_FAILURE; 70 } 71 } 72 73 /* register with BTA system manager */ 74 bta_sys_register(BTA_ID_AG, &bta_ag_reg); 75 76 if ((p_buf = (tBTA_AG_API_ENABLE *) GKI_getbuf(sizeof(tBTA_AG_API_ENABLE))) != NULL) 77 { 78 p_buf->hdr.event = BTA_AG_API_ENABLE_EVT; 79 p_buf->parse_mode = parse_mode; 80 p_buf->p_cback = p_cback; 81 bta_sys_sendmsg(p_buf); 82 } 83 84 return BTA_SUCCESS; 85 86 } 87 88 /******************************************************************************* 89 ** 90 ** Function BTA_AgDisable 91 ** 92 ** Description Disable the audio gateway service 93 ** 94 ** 95 ** Returns void 96 ** 97 *******************************************************************************/ 98 void BTA_AgDisable(void) 99 { 100 BT_HDR *p_buf; 101 102 if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL) 103 { 104 p_buf->event = BTA_AG_API_DISABLE_EVT; 105 bta_sys_sendmsg(p_buf); 106 } 107 } 108 109 /******************************************************************************* 110 ** 111 ** Function BTA_AgRegister 112 ** 113 ** Description Register an Audio Gateway service. 114 ** 115 ** 116 ** Returns void 117 ** 118 *******************************************************************************/ 119 void BTA_AgRegister(tBTA_SERVICE_MASK services, tBTA_SEC sec_mask,tBTA_AG_FEAT features, 120 char * p_service_names[], UINT8 app_id) 121 { 122 tBTA_AG_API_REGISTER *p_buf; 123 int i; 124 125 if ((p_buf = (tBTA_AG_API_REGISTER *) GKI_getbuf(sizeof(tBTA_AG_API_REGISTER))) != NULL) 126 { 127 p_buf->hdr.event = BTA_AG_API_REGISTER_EVT; 128 p_buf->features = features; 129 p_buf->sec_mask = sec_mask; 130 p_buf->services = services; 131 p_buf->app_id = app_id; 132 for (i = 0; i < BTA_AG_NUM_IDX; i++) 133 { 134 if(p_service_names[i]) 135 { 136 BCM_STRNCPY_S(p_buf->p_name[i], BTA_SERVICE_NAME_LEN+1, p_service_names[i], BTA_SERVICE_NAME_LEN); 137 p_buf->p_name[i][BTA_SERVICE_NAME_LEN] = 0; 138 } 139 else 140 { 141 p_buf->p_name[i][0] = 0; 142 } 143 } 144 bta_sys_sendmsg(p_buf); 145 } 146 } 147 148 /******************************************************************************* 149 ** 150 ** Function BTA_AgDeregister 151 ** 152 ** Description Deregister an audio gateway service. 153 ** 154 ** 155 ** Returns void 156 ** 157 *******************************************************************************/ 158 void BTA_AgDeregister(UINT16 handle) 159 { 160 BT_HDR *p_buf; 161 162 if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL) 163 { 164 p_buf->event = BTA_AG_API_DEREGISTER_EVT; 165 p_buf->layer_specific = handle; 166 bta_sys_sendmsg(p_buf); 167 } 168 } 169 170 /******************************************************************************* 171 ** 172 ** Function BTA_AgOpen 173 ** 174 ** Description Opens a connection to a headset or hands-free device. 175 ** When connection is open callback function is called 176 ** with a BTA_AG_OPEN_EVT. Only the data connection is 177 ** opened. The audio connection is not opened. 178 ** 179 ** 180 ** Returns void 181 ** 182 *******************************************************************************/ 183 void BTA_AgOpen(UINT16 handle, BD_ADDR bd_addr, tBTA_SEC sec_mask, tBTA_SERVICE_MASK services) 184 { 185 tBTA_AG_API_OPEN *p_buf; 186 187 if ((p_buf = (tBTA_AG_API_OPEN *) GKI_getbuf(sizeof(tBTA_AG_API_OPEN))) != NULL) 188 { 189 p_buf->hdr.event = BTA_AG_API_OPEN_EVT; 190 p_buf->hdr.layer_specific = handle; 191 bdcpy(p_buf->bd_addr, bd_addr); 192 p_buf->services = services; 193 p_buf->sec_mask = sec_mask; 194 bta_sys_sendmsg(p_buf); 195 } 196 } 197 198 /******************************************************************************* 199 ** 200 ** Function BTA_AgClose 201 ** 202 ** Description Close the current connection to a headset or a handsfree 203 ** Any current audio connection will also be closed. 204 ** 205 ** 206 ** Returns void 207 ** 208 *******************************************************************************/ 209 void BTA_AgClose(UINT16 handle) 210 { 211 BT_HDR *p_buf; 212 213 if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL) 214 { 215 p_buf->event = BTA_AG_API_CLOSE_EVT; 216 p_buf->layer_specific = handle; 217 bta_sys_sendmsg(p_buf); 218 } 219 } 220 221 /******************************************************************************* 222 ** 223 ** Function BTA_AgAudioOpen 224 ** 225 ** Description Opens an audio connection to the currently connected 226 ** headset or hnadsfree. 227 ** 228 ** 229 ** Returns void 230 ** 231 *******************************************************************************/ 232 void BTA_AgAudioOpen(UINT16 handle) 233 { 234 BT_HDR *p_buf; 235 236 if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL) 237 { 238 p_buf->event = BTA_AG_API_AUDIO_OPEN_EVT; 239 p_buf->layer_specific = handle; 240 bta_sys_sendmsg(p_buf); 241 } 242 } 243 244 /******************************************************************************* 245 ** 246 ** Function BTA_AgAudioClose 247 ** 248 ** Description Close the currently active audio connection to a headset 249 ** or hnadsfree. The data connection remains open 250 ** 251 ** 252 ** Returns void 253 ** 254 *******************************************************************************/ 255 void BTA_AgAudioClose(UINT16 handle) 256 { 257 BT_HDR *p_buf; 258 259 if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL) 260 { 261 p_buf->event = BTA_AG_API_AUDIO_CLOSE_EVT; 262 p_buf->layer_specific = handle; 263 bta_sys_sendmsg(p_buf); 264 } 265 } 266 267 268 /******************************************************************************* 269 ** 270 ** Function BTA_AgResult 271 ** 272 ** Description Send an AT result code to a headset or hands-free device. 273 ** This function is only used when the AG parse mode is set 274 ** to BTA_AG_PARSE. 275 ** 276 ** 277 ** Returns void 278 ** 279 *******************************************************************************/ 280 void BTA_AgResult(UINT16 handle, tBTA_AG_RES result, tBTA_AG_RES_DATA *p_data) 281 { 282 tBTA_AG_API_RESULT *p_buf; 283 284 if ((p_buf = (tBTA_AG_API_RESULT *) GKI_getbuf(sizeof(tBTA_AG_API_RESULT))) != NULL) 285 { 286 p_buf->hdr.event = BTA_AG_API_RESULT_EVT; 287 p_buf->hdr.layer_specific = handle; 288 p_buf->result = result; 289 if(p_data) 290 { 291 memcpy(&p_buf->data, p_data, sizeof(p_buf->data)); 292 } 293 bta_sys_sendmsg(p_buf); 294 } 295 } 296 297 /******************************************************************************* 298 ** 299 ** Function BTA_AgSetCodec 300 ** 301 ** Description Specify the codec type to be used for the subsequent 302 ** audio connection. 303 ** 304 ** 305 ** 306 ** Returns void 307 ** 308 *******************************************************************************/ 309 void BTA_AgSetCodec(UINT16 handle, tBTA_AG_PEER_CODEC codec) 310 { 311 tBTA_AG_API_SETCODEC *p_buf; 312 313 if ((p_buf = (tBTA_AG_API_SETCODEC *) GKI_getbuf(sizeof(tBTA_AG_API_SETCODEC))) != NULL) 314 { 315 p_buf->hdr.event = BTA_AG_API_SETCODEC_EVT; 316 p_buf->hdr.layer_specific = handle; 317 p_buf->codec = codec; 318 bta_sys_sendmsg(p_buf); 319 } 320 } 321 322
