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 * AVRCP SDP related functions 22 * 23 ******************************************************************************/ 24 #include <string.h> 25 26 #include "gki.h" 27 #include "avrc_api.h" 28 #include "avrc_int.h" 29 30 /***************************************************************************** 31 ** Global data 32 *****************************************************************************/ 33 #if AVRC_DYNAMIC_MEMORY == FALSE 34 tAVRC_CB avrc_cb; 35 #endif 36 37 /* update AVRC_NUM_PROTO_ELEMS if this constant is changed */ 38 const tSDP_PROTOCOL_ELEM avrc_proto_list [] = 39 { 40 {UUID_PROTOCOL_L2CAP, 1, {AVCT_PSM, 0} }, 41 {UUID_PROTOCOL_AVCTP, 1, {AVCT_REV_1_0, 0} } 42 }; 43 44 45 46 /****************************************************************************** 47 ** 48 ** Function avrc_sdp_cback 49 ** 50 ** Description This is the SDP callback function used by A2D_FindService. 51 ** This function will be executed by SDP when the service 52 ** search is completed. If the search is successful, it 53 ** finds the first record in the database that matches the 54 ** UUID of the search. Then retrieves various parameters 55 ** from the record. When it is finished it calls the 56 ** application callback function. 57 ** 58 ** Returns Nothing. 59 ** 60 ******************************************************************************/ 61 static void avrc_sdp_cback(UINT16 status) 62 { 63 AVRC_TRACE_API1("avrc_sdp_cback status: %d", status); 64 65 /* reset service_uuid, so can start another find service */ 66 avrc_cb.service_uuid = 0; 67 68 /* return info from sdp record in app callback function */ 69 (*avrc_cb.p_cback) (status); 70 71 return; 72 } 73 74 /****************************************************************************** 75 ** 76 ** Function AVRC_FindService 77 ** 78 ** Description This function is called by the application to perform service 79 ** discovery and retrieve AVRCP SDP record information from a 80 ** peer device. Information is returned for the first service 81 ** record found on the server that matches the service UUID. 82 ** The callback function will be executed when service discovery 83 ** is complete. There can only be one outstanding call to 84 ** AVRC_FindService() at a time; the application must wait for 85 ** the callback before it makes another call to the function. 86 ** The application is responsible for allocating memory for the 87 ** discovery database. It is recommended that the size of the 88 ** discovery database be at least 300 bytes. The application 89 ** can deallocate the memory after the callback function has 90 ** executed. 91 ** 92 ** Input Parameters: 93 ** service_uuid: Indicates TG(UUID_SERVCLASS_AV_REM_CTRL_TARGET) 94 ** or CT(UUID_SERVCLASS_AV_REMOTE_CONTROL) 95 ** 96 ** bd_addr: BD address of the peer device. 97 ** 98 ** p_db: SDP discovery database parameters. 99 ** 100 ** p_cback: Pointer to the callback function. 101 ** 102 ** Output Parameters: 103 ** None. 104 ** 105 ** Returns AVRC_SUCCESS if successful. 106 ** AVRC_BAD_PARAMS if discovery database parameters are invalid. 107 ** AVRC_NO_RESOURCES if there are not enough resources to 108 ** perform the service search. 109 ** 110 ******************************************************************************/ 111 UINT16 AVRC_FindService(UINT16 service_uuid, BD_ADDR bd_addr, 112 tAVRC_SDP_DB_PARAMS *p_db, tAVRC_FIND_CBACK *p_cback) 113 { 114 tSDP_UUID uuid_list; 115 BOOLEAN result = TRUE; 116 UINT16 a2d_attr_list[] = {ATTR_ID_SERVICE_CLASS_ID_LIST, /* update AVRC_NUM_ATTR, if changed */ 117 ATTR_ID_PROTOCOL_DESC_LIST, 118 ATTR_ID_BT_PROFILE_DESC_LIST, 119 ATTR_ID_SERVICE_NAME, 120 ATTR_ID_SUPPORTED_FEATURES, 121 ATTR_ID_PROVIDER_NAME}; 122 123 AVRC_TRACE_API1("AVRC_FindService uuid: %x", service_uuid); 124 if( (service_uuid != UUID_SERVCLASS_AV_REM_CTRL_TARGET && service_uuid != UUID_SERVCLASS_AV_REMOTE_CONTROL) || 125 p_db == NULL || p_db->p_db == NULL || p_cback == NULL) 126 return AVRC_BAD_PARAM; 127 128 /* check if it is busy */ 129 if( avrc_cb.service_uuid == UUID_SERVCLASS_AV_REM_CTRL_TARGET || 130 avrc_cb.service_uuid == UUID_SERVCLASS_AV_REMOTE_CONTROL) 131 return AVRC_NO_RESOURCES; 132 133 /* set up discovery database */ 134 uuid_list.len = LEN_UUID_16; 135 uuid_list.uu.uuid16 = service_uuid; 136 137 if(p_db->p_attrs == NULL || p_db->num_attr == 0) 138 { 139 p_db->p_attrs = a2d_attr_list; 140 p_db->num_attr = AVRC_NUM_ATTR; 141 } 142 143 result = SDP_InitDiscoveryDb(p_db->p_db, p_db->db_len, 1, &uuid_list, p_db->num_attr, 144 p_db->p_attrs); 145 146 if (result == TRUE) 147 { 148 /* store service_uuid and discovery db pointer */ 149 avrc_cb.p_db = p_db->p_db; 150 avrc_cb.service_uuid = service_uuid; 151 avrc_cb.p_cback = p_cback; 152 153 /* perform service search */ 154 result = SDP_ServiceSearchAttributeRequest(bd_addr, p_db->p_db, avrc_sdp_cback); 155 } 156 157 return (result ? AVRC_SUCCESS : AVRC_FAIL); 158 } 159 160 /****************************************************************************** 161 ** 162 ** Function AVRC_AddRecord 163 ** 164 ** Description This function is called to build an AVRCP SDP record. 165 ** Prior to calling this function the application must 166 ** call SDP_CreateRecord() to create an SDP record. 167 ** 168 ** Input Parameters: 169 ** service_uuid: Indicates TG(UUID_SERVCLASS_AV_REM_CTRL_TARGET) 170 ** or CT(UUID_SERVCLASS_AV_REMOTE_CONTROL) 171 ** 172 ** p_service_name: Pointer to a null-terminated character 173 ** string containing the service name. 174 ** If service name is not used set this to NULL. 175 ** 176 ** p_provider_name: Pointer to a null-terminated character 177 ** string containing the provider name. 178 ** If provider name is not used set this to NULL. 179 ** 180 ** categories: Supported categories. 181 ** 182 ** sdp_handle: SDP handle returned by SDP_CreateRecord(). 183 ** 184 ** Output Parameters: 185 ** None. 186 ** 187 ** Returns AVRC_SUCCESS if successful. 188 ** AVRC_NO_RESOURCES if not enough resources to build the SDP record. 189 ** 190 ******************************************************************************/ 191 UINT16 AVRC_AddRecord(UINT16 service_uuid, char *p_service_name, 192 char *p_provider_name, UINT16 categories, UINT32 sdp_handle) 193 { 194 UINT16 browse_list[1]; 195 BOOLEAN result = TRUE; 196 UINT8 temp[8]; 197 UINT8 *p; 198 UINT16 count = 1; 199 UINT16 class_list[2]; 200 201 202 AVRC_TRACE_API1("AVRC_AddRecord uuid: %x", service_uuid); 203 204 if( service_uuid != UUID_SERVCLASS_AV_REM_CTRL_TARGET && service_uuid != UUID_SERVCLASS_AV_REMOTE_CONTROL ) 205 return AVRC_BAD_PARAM; 206 207 /* add service class id list */ 208 class_list[0] = service_uuid; 209 result &= SDP_AddServiceClassIdList(sdp_handle, count, class_list); 210 211 /* add protocol descriptor list */ 212 result &= SDP_AddProtocolList(sdp_handle, AVRC_NUM_PROTO_ELEMS, (tSDP_PROTOCOL_ELEM *)avrc_proto_list); 213 214 /* add profile descriptor list */ 215 result &= SDP_AddProfileDescriptorList(sdp_handle, UUID_SERVCLASS_AV_REMOTE_CONTROL, AVRC_REV_1_0); 216 217 /* add supported categories */ 218 p = temp; 219 UINT16_TO_BE_STREAM(p, categories); 220 result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SUPPORTED_FEATURES, UINT_DESC_TYPE, 221 (UINT32)2, (UINT8*)temp); 222 223 /* add provider name */ 224 if (p_provider_name != NULL) 225 { 226 result &= SDP_AddAttribute(sdp_handle, ATTR_ID_PROVIDER_NAME, TEXT_STR_DESC_TYPE, 227 (UINT32)(strlen(p_provider_name)+1), (UINT8 *) p_provider_name); 228 } 229 230 /* add service name */ 231 if (p_service_name != NULL) 232 { 233 result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SERVICE_NAME, TEXT_STR_DESC_TYPE, 234 (UINT32)(strlen(p_service_name)+1), (UINT8 *) p_service_name); 235 } 236 237 /* add browse group list */ 238 browse_list[0] = UUID_SERVCLASS_PUBLIC_BROWSE_GROUP; 239 result &= SDP_AddUuidSequence(sdp_handle, ATTR_ID_BROWSE_GROUP_LIST, 1, browse_list); 240 241 242 return (result ? AVRC_SUCCESS : AVRC_FAIL); 243 } 244 245 246 247 /****************************************************************************** 248 ** 249 ** Function AVRC_SetTraceLevel 250 ** 251 ** Description Sets the trace level for AVRC. If 0xff is passed, the 252 ** current trace level is returned. 253 ** 254 ** Input Parameters: 255 ** new_level: The level to set the AVRC tracing to: 256 ** 0xff-returns the current setting. 257 ** 0-turns off tracing. 258 ** >= 1-Errors. 259 ** >= 2-Warnings. 260 ** >= 3-APIs. 261 ** >= 4-Events. 262 ** >= 5-Debug. 263 ** 264 ** Returns The new trace level or current trace level if 265 ** the input parameter is 0xff. 266 ** 267 ******************************************************************************/ 268 UINT8 AVRC_SetTraceLevel (UINT8 new_level) 269 { 270 if (new_level != 0xFF) 271 avrc_cb.trace_level = new_level; 272 273 return (avrc_cb.trace_level); 274 } 275 276 /******************************************************************************* 277 ** 278 ** Function AVRC_Init 279 ** 280 ** Description This function is called at stack startup to allocate the 281 ** control block (if using dynamic memory), and initializes the 282 ** control block and tracing level. 283 ** 284 ** Returns void 285 ** 286 *******************************************************************************/ 287 void AVRC_Init(void) 288 { 289 memset(&avrc_cb, 0, sizeof(tAVRC_CB)); 290 291 #if defined(AVRC_INITIAL_TRACE_LEVEL) 292 avrc_cb.trace_level = AVRC_INITIAL_TRACE_LEVEL; 293 #else 294 avrc_cb.trace_level = BT_TRACE_LEVEL_NONE; 295 #endif 296 } 297 298
