1 /****************************************************************************** 2 * 3 * Copyright (C) 2003-2013 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 #if AVRC_METADATA_INCLUDED == TRUE 42 {UUID_PROTOCOL_AVCTP, 1, {AVCT_REV_1_2, 0} } 43 #else 44 {UUID_PROTOCOL_AVCTP, 1, {AVCT_REV_1_0, 0} } 45 #endif 46 }; 47 48 49 50 /****************************************************************************** 51 ** 52 ** Function avrc_sdp_cback 53 ** 54 ** Description This is the SDP callback function used by A2D_FindService. 55 ** This function will be executed by SDP when the service 56 ** search is completed. If the search is successful, it 57 ** finds the first record in the database that matches the 58 ** UUID of the search. Then retrieves various parameters 59 ** from the record. When it is finished it calls the 60 ** application callback function. 61 ** 62 ** Returns Nothing. 63 ** 64 ******************************************************************************/ 65 static void avrc_sdp_cback(UINT16 status) 66 { 67 AVRC_TRACE_API1("avrc_sdp_cback status: %d", status); 68 69 /* reset service_uuid, so can start another find service */ 70 avrc_cb.service_uuid = 0; 71 72 /* return info from sdp record in app callback function */ 73 (*avrc_cb.p_cback) (status); 74 75 return; 76 } 77 78 /****************************************************************************** 79 ** 80 ** Function AVRC_FindService 81 ** 82 ** Description This function is called by the application to perform service 83 ** discovery and retrieve AVRCP SDP record information from a 84 ** peer device. Information is returned for the first service 85 ** record found on the server that matches the service UUID. 86 ** The callback function will be executed when service discovery 87 ** is complete. There can only be one outstanding call to 88 ** AVRC_FindService() at a time; the application must wait for 89 ** the callback before it makes another call to the function. 90 ** The application is responsible for allocating memory for the 91 ** discovery database. It is recommended that the size of the 92 ** discovery database be at least 300 bytes. The application 93 ** can deallocate the memory after the callback function has 94 ** executed. 95 ** 96 ** Input Parameters: 97 ** service_uuid: Indicates TG(UUID_SERVCLASS_AV_REM_CTRL_TARGET) 98 ** or CT(UUID_SERVCLASS_AV_REMOTE_CONTROL) 99 ** 100 ** bd_addr: BD address of the peer device. 101 ** 102 ** p_db: SDP discovery database parameters. 103 ** 104 ** p_cback: Pointer to the callback function. 105 ** 106 ** Output Parameters: 107 ** None. 108 ** 109 ** Returns AVRC_SUCCESS if successful. 110 ** AVRC_BAD_PARAMS if discovery database parameters are invalid. 111 ** AVRC_NO_RESOURCES if there are not enough resources to 112 ** perform the service search. 113 ** 114 ******************************************************************************/ 115 UINT16 AVRC_FindService(UINT16 service_uuid, BD_ADDR bd_addr, 116 tAVRC_SDP_DB_PARAMS *p_db, tAVRC_FIND_CBACK *p_cback) 117 { 118 tSDP_UUID uuid_list; 119 BOOLEAN result = TRUE; 120 UINT16 a2d_attr_list[] = {ATTR_ID_SERVICE_CLASS_ID_LIST, /* update AVRC_NUM_ATTR, if changed */ 121 ATTR_ID_PROTOCOL_DESC_LIST, 122 ATTR_ID_BT_PROFILE_DESC_LIST, 123 ATTR_ID_SERVICE_NAME, 124 ATTR_ID_SUPPORTED_FEATURES, 125 ATTR_ID_PROVIDER_NAME}; 126 127 AVRC_TRACE_API1("AVRC_FindService uuid: %x", service_uuid); 128 if( (service_uuid != UUID_SERVCLASS_AV_REM_CTRL_TARGET && service_uuid != UUID_SERVCLASS_AV_REMOTE_CONTROL) || 129 p_db == NULL || p_db->p_db == NULL || p_cback == NULL) 130 return AVRC_BAD_PARAM; 131 132 /* check if it is busy */ 133 if( avrc_cb.service_uuid == UUID_SERVCLASS_AV_REM_CTRL_TARGET || 134 avrc_cb.service_uuid == UUID_SERVCLASS_AV_REMOTE_CONTROL) 135 return AVRC_NO_RESOURCES; 136 137 /* set up discovery database */ 138 uuid_list.len = LEN_UUID_16; 139 uuid_list.uu.uuid16 = service_uuid; 140 141 if(p_db->p_attrs == NULL || p_db->num_attr == 0) 142 { 143 p_db->p_attrs = a2d_attr_list; 144 p_db->num_attr = AVRC_NUM_ATTR; 145 } 146 147 result = SDP_InitDiscoveryDb(p_db->p_db, p_db->db_len, 1, &uuid_list, p_db->num_attr, 148 p_db->p_attrs); 149 150 if (result == TRUE) 151 { 152 /* store service_uuid and discovery db pointer */ 153 avrc_cb.p_db = p_db->p_db; 154 avrc_cb.service_uuid = service_uuid; 155 avrc_cb.p_cback = p_cback; 156 157 /* perform service search */ 158 result = SDP_ServiceSearchAttributeRequest(bd_addr, p_db->p_db, avrc_sdp_cback); 159 } 160 161 return (result ? AVRC_SUCCESS : AVRC_FAIL); 162 } 163 164 /****************************************************************************** 165 ** 166 ** Function AVRC_AddRecord 167 ** 168 ** Description This function is called to build an AVRCP SDP record. 169 ** Prior to calling this function the application must 170 ** call SDP_CreateRecord() to create an SDP record. 171 ** 172 ** Input Parameters: 173 ** service_uuid: Indicates TG(UUID_SERVCLASS_AV_REM_CTRL_TARGET) 174 ** or CT(UUID_SERVCLASS_AV_REMOTE_CONTROL) 175 ** 176 ** p_service_name: Pointer to a null-terminated character 177 ** string containing the service name. 178 ** If service name is not used set this to NULL. 179 ** 180 ** p_provider_name: Pointer to a null-terminated character 181 ** string containing the provider name. 182 ** If provider name is not used set this to NULL. 183 ** 184 ** categories: Supported categories. 185 ** 186 ** sdp_handle: SDP handle returned by SDP_CreateRecord(). 187 ** 188 ** Output Parameters: 189 ** None. 190 ** 191 ** Returns AVRC_SUCCESS if successful. 192 ** AVRC_NO_RESOURCES if not enough resources to build the SDP record. 193 ** 194 ******************************************************************************/ 195 UINT16 AVRC_AddRecord(UINT16 service_uuid, char *p_service_name, 196 char *p_provider_name, UINT16 categories, UINT32 sdp_handle) 197 { 198 UINT16 browse_list[1]; 199 BOOLEAN result = TRUE; 200 UINT8 temp[8]; 201 UINT8 *p; 202 UINT16 count = 1; 203 UINT16 class_list[2]; 204 205 206 AVRC_TRACE_API1("AVRC_AddRecord uuid: %x", service_uuid); 207 208 if( service_uuid != UUID_SERVCLASS_AV_REM_CTRL_TARGET && service_uuid != UUID_SERVCLASS_AV_REMOTE_CONTROL ) 209 return AVRC_BAD_PARAM; 210 211 /* add service class id list */ 212 class_list[0] = service_uuid; 213 result &= SDP_AddServiceClassIdList(sdp_handle, count, class_list); 214 215 /* add protocol descriptor list */ 216 result &= SDP_AddProtocolList(sdp_handle, AVRC_NUM_PROTO_ELEMS, (tSDP_PROTOCOL_ELEM *)avrc_proto_list); 217 218 /* add profile descriptor list */ 219 #if AVRC_METADATA_INCLUDED == TRUE 220 result &= SDP_AddProfileDescriptorList(sdp_handle, UUID_SERVCLASS_AV_REMOTE_CONTROL, AVRC_REV_1_3); 221 #else 222 result &= SDP_AddProfileDescriptorList(sdp_handle, UUID_SERVCLASS_AV_REMOTE_CONTROL, AVRC_REV_1_0); 223 #endif 224 225 226 /* add supported categories */ 227 p = temp; 228 UINT16_TO_BE_STREAM(p, categories); 229 result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SUPPORTED_FEATURES, UINT_DESC_TYPE, 230 (UINT32)2, (UINT8*)temp); 231 232 /* add provider name */ 233 if (p_provider_name != NULL) 234 { 235 result &= SDP_AddAttribute(sdp_handle, ATTR_ID_PROVIDER_NAME, TEXT_STR_DESC_TYPE, 236 (UINT32)(strlen(p_provider_name)+1), (UINT8 *) p_provider_name); 237 } 238 239 /* add service name */ 240 if (p_service_name != NULL) 241 { 242 result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SERVICE_NAME, TEXT_STR_DESC_TYPE, 243 (UINT32)(strlen(p_service_name)+1), (UINT8 *) p_service_name); 244 } 245 246 /* add browse group list */ 247 browse_list[0] = UUID_SERVCLASS_PUBLIC_BROWSE_GROUP; 248 result &= SDP_AddUuidSequence(sdp_handle, ATTR_ID_BROWSE_GROUP_LIST, 1, browse_list); 249 250 251 return (result ? AVRC_SUCCESS : AVRC_FAIL); 252 } 253 254 255 256 /****************************************************************************** 257 ** 258 ** Function AVRC_SetTraceLevel 259 ** 260 ** Description Sets the trace level for AVRC. If 0xff is passed, the 261 ** current trace level is returned. 262 ** 263 ** Input Parameters: 264 ** new_level: The level to set the AVRC tracing to: 265 ** 0xff-returns the current setting. 266 ** 0-turns off tracing. 267 ** >= 1-Errors. 268 ** >= 2-Warnings. 269 ** >= 3-APIs. 270 ** >= 4-Events. 271 ** >= 5-Debug. 272 ** 273 ** Returns The new trace level or current trace level if 274 ** the input parameter is 0xff. 275 ** 276 ******************************************************************************/ 277 UINT8 AVRC_SetTraceLevel (UINT8 new_level) 278 { 279 if (new_level != 0xFF) 280 avrc_cb.trace_level = new_level; 281 282 return (avrc_cb.trace_level); 283 } 284 285 /******************************************************************************* 286 ** 287 ** Function AVRC_Init 288 ** 289 ** Description This function is called at stack startup to allocate the 290 ** control block (if using dynamic memory), and initializes the 291 ** control block and tracing level. 292 ** 293 ** Returns void 294 ** 295 *******************************************************************************/ 296 void AVRC_Init(void) 297 { 298 memset(&avrc_cb, 0, sizeof(tAVRC_CB)); 299 300 #if defined(AVRC_INITIAL_TRACE_LEVEL) 301 avrc_cb.trace_level = AVRC_INITIAL_TRACE_LEVEL; 302 #else 303 avrc_cb.trace_level = BT_TRACE_LEVEL_NONE; 304 #endif 305 } 306 307
