avrc_sdp.c revision 5738f83aeb59361a0a2eda2460113f6dc9194271
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 34tAVRC_CB avrc_cb; 35#endif 36 37/* update AVRC_NUM_PROTO_ELEMS if this constant is changed */ 38const 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******************************************************************************/ 61static 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******************************************************************************/ 111UINT16 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******************************************************************************/ 191UINT16 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******************************************************************************/ 268UINT8 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*******************************************************************************/ 287void 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