| /****************************************************************************** |
| * |
| * Copyright (C) 2003-2016 Broadcom Corporation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at: |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| ******************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * AVRCP SDP related functions |
| * |
| ******************************************************************************/ |
| #include <string.h> |
| |
| #include "bt_common.h" |
| #include "avrc_api.h" |
| #include "avrc_int.h" |
| |
| /***************************************************************************** |
| * Global data |
| ****************************************************************************/ |
| tAVRC_CB avrc_cb; |
| |
| /****************************************************************************** |
| * |
| * Function avrc_sdp_cback |
| * |
| * Description This is the SDP callback function used by A2DP_FindService. |
| * This function will be executed by SDP when the service |
| * search is completed. If the search is successful, it |
| * finds the first record in the database that matches the |
| * UUID of the search. Then retrieves various parameters |
| * from the record. When it is finished it calls the |
| * application callback function. |
| * |
| * Returns Nothing. |
| * |
| *****************************************************************************/ |
| static void avrc_sdp_cback(uint16_t status) |
| { |
| AVRC_TRACE_API("%s status: %d", __func__, status); |
| |
| /* reset service_uuid, so can start another find service */ |
| avrc_cb.service_uuid = 0; |
| |
| /* return info from sdp record in app callback function */ |
| (*avrc_cb.p_cback) (status); |
| |
| return; |
| } |
| |
| /****************************************************************************** |
| * |
| * Function AVRC_FindService |
| * |
| * Description This function is called by the application to perform service |
| * discovery and retrieve AVRCP SDP record information from a |
| * peer device. Information is returned for the first service |
| * record found on the server that matches the service UUID. |
| * The callback function will be executed when service discovery |
| * is complete. There can only be one outstanding call to |
| * AVRC_FindService() at a time; the application must wait for |
| * the callback before it makes another call to the function. |
| * The application is responsible for allocating memory for the |
| * discovery database. It is recommended that the size of the |
| * discovery database be at least 300 bytes. The application |
| * can deallocate the memory after the callback function has |
| * executed. |
| * |
| * Input Parameters: |
| * service_uuid: Indicates TG(UUID_SERVCLASS_AV_REM_CTRL_TARGET) |
| * or CT(UUID_SERVCLASS_AV_REMOTE_CONTROL) |
| * |
| * bd_addr: BD address of the peer device. |
| * |
| * p_db: SDP discovery database parameters. |
| * |
| * p_cback: Pointer to the callback function. |
| * |
| * Output Parameters: |
| * None. |
| * |
| * Returns AVRC_SUCCESS if successful. |
| * AVRC_BAD_PARAMS if discovery database parameters are invalid. |
| * AVRC_NO_RESOURCES if there are not enough resources to |
| * perform the service search. |
| * |
| *****************************************************************************/ |
| uint16_t AVRC_FindService(uint16_t service_uuid, BD_ADDR bd_addr, |
| tAVRC_SDP_DB_PARAMS *p_db, tAVRC_FIND_CBACK *p_cback) |
| { |
| tSDP_UUID uuid_list; |
| bool result = true; |
| uint16_t a2dp_attr_list[] = {ATTR_ID_SERVICE_CLASS_ID_LIST, /* update AVRC_NUM_ATTR, if changed */ |
| ATTR_ID_PROTOCOL_DESC_LIST, |
| ATTR_ID_BT_PROFILE_DESC_LIST, |
| ATTR_ID_SERVICE_NAME, |
| ATTR_ID_SUPPORTED_FEATURES, |
| ATTR_ID_PROVIDER_NAME}; |
| |
| AVRC_TRACE_API("%s uuid: %x", __func__, service_uuid); |
| if( (service_uuid != UUID_SERVCLASS_AV_REM_CTRL_TARGET && service_uuid != UUID_SERVCLASS_AV_REMOTE_CONTROL) || |
| p_db == NULL || p_db->p_db == NULL || p_cback == NULL) |
| return AVRC_BAD_PARAM; |
| |
| /* check if it is busy */ |
| if( avrc_cb.service_uuid == UUID_SERVCLASS_AV_REM_CTRL_TARGET || |
| avrc_cb.service_uuid == UUID_SERVCLASS_AV_REMOTE_CONTROL) |
| return AVRC_NO_RESOURCES; |
| |
| /* set up discovery database */ |
| uuid_list.len = LEN_UUID_16; |
| uuid_list.uu.uuid16 = service_uuid; |
| |
| if(p_db->p_attrs == NULL || p_db->num_attr == 0) |
| { |
| p_db->p_attrs = a2dp_attr_list; |
| p_db->num_attr = AVRC_NUM_ATTR; |
| } |
| |
| result = SDP_InitDiscoveryDb(p_db->p_db, p_db->db_len, 1, &uuid_list, p_db->num_attr, |
| p_db->p_attrs); |
| |
| if (result == true) |
| { |
| /* store service_uuid and discovery db pointer */ |
| avrc_cb.p_db = p_db->p_db; |
| avrc_cb.service_uuid = service_uuid; |
| avrc_cb.p_cback = p_cback; |
| |
| /* perform service search */ |
| result = SDP_ServiceSearchAttributeRequest(bd_addr, p_db->p_db, avrc_sdp_cback); |
| } |
| |
| return (result ? AVRC_SUCCESS : AVRC_FAIL); |
| } |
| |
| /****************************************************************************** |
| * |
| * Function AVRC_AddRecord |
| * |
| * Description This function is called to build an AVRCP SDP record. |
| * Prior to calling this function the application must |
| * call SDP_CreateRecord() to create an SDP record. |
| * |
| * Input Parameters: |
| * service_uuid: Indicates TG(UUID_SERVCLASS_AV_REM_CTRL_TARGET) |
| * or CT(UUID_SERVCLASS_AV_REMOTE_CONTROL) |
| * |
| * p_service_name: Pointer to a null-terminated character |
| * string containing the service name. |
| * If service name is not used set this to NULL. |
| * |
| * p_provider_name: Pointer to a null-terminated character |
| * string containing the provider name. |
| * If provider name is not used set this to NULL. |
| * |
| * categories: Supported categories. |
| * |
| * sdp_handle: SDP handle returned by SDP_CreateRecord(). |
| * |
| * browse_supported: browse support info. |
| * |
| * profile_version: profile version of avrcp record. |
| * |
| * Output Parameters: |
| * None. |
| * |
| * Returns AVRC_SUCCESS if successful. |
| * AVRC_NO_RESOURCES if not enough resources to build the SDP record. |
| * |
| *****************************************************************************/ |
| uint16_t AVRC_AddRecord(uint16_t service_uuid, const char *p_service_name, |
| const char *p_provider_name, uint16_t categories, |
| uint32_t sdp_handle, bool browse_supported, |
| uint16_t profile_version) |
| { |
| uint16_t browse_list[1]; |
| bool result = true; |
| uint8_t temp[8]; |
| uint8_t *p; |
| uint16_t count = 1; |
| uint8_t index = 0; |
| uint16_t class_list[2]; |
| |
| |
| AVRC_TRACE_API("%s uuid: %x", __func__, service_uuid); |
| |
| if( service_uuid != UUID_SERVCLASS_AV_REM_CTRL_TARGET && service_uuid != UUID_SERVCLASS_AV_REMOTE_CONTROL ) |
| return AVRC_BAD_PARAM; |
| |
| /* add service class id list */ |
| class_list[0] = service_uuid; |
| if((service_uuid == UUID_SERVCLASS_AV_REMOTE_CONTROL ) && (profile_version > AVRC_REV_1_3)) |
| { |
| class_list[1] = UUID_SERVCLASS_AV_REM_CTRL_CONTROL; |
| count = 2; |
| } |
| result &= SDP_AddServiceClassIdList(sdp_handle, count, class_list); |
| |
| /* add protocol descriptor list */ |
| tSDP_PROTOCOL_ELEM avrc_proto_desc_list [AVRC_NUM_PROTO_ELEMS]; |
| avrc_proto_desc_list[0].num_params = 1; |
| avrc_proto_desc_list[0].protocol_uuid = UUID_PROTOCOL_L2CAP; |
| avrc_proto_desc_list[0].params[0] = AVCT_PSM; |
| avrc_proto_desc_list[0].params[1] = 0; |
| for (index = 1; index < AVRC_NUM_PROTO_ELEMS; index++) |
| { |
| avrc_proto_desc_list[index].num_params = 1; |
| avrc_proto_desc_list[index].protocol_uuid = UUID_PROTOCOL_AVCTP; |
| avrc_proto_desc_list[index].params[0] = AVCT_REV_1_4; |
| avrc_proto_desc_list[index].params[1] = 0; |
| } |
| result &= SDP_AddProtocolList(sdp_handle, AVRC_NUM_PROTO_ELEMS, |
| (tSDP_PROTOCOL_ELEM *)avrc_proto_desc_list); |
| |
| /* additional protocal descriptor, required only for version > 1.3 */ |
| if ((profile_version > AVRC_REV_1_3) && (browse_supported)) |
| { |
| tSDP_PROTO_LIST_ELEM avrc_add_proto_desc_list; |
| avrc_add_proto_desc_list.num_elems = 2; |
| avrc_add_proto_desc_list.list_elem[0].num_params = 1; |
| avrc_add_proto_desc_list.list_elem[0].protocol_uuid = UUID_PROTOCOL_L2CAP; |
| avrc_add_proto_desc_list.list_elem[0].params[0] = AVCT_BR_PSM; |
| avrc_add_proto_desc_list.list_elem[0].params[1] = 0; |
| avrc_add_proto_desc_list.list_elem[1].num_params = 1; |
| avrc_add_proto_desc_list.list_elem[1].protocol_uuid = UUID_PROTOCOL_AVCTP; |
| avrc_add_proto_desc_list.list_elem[1].params[0] = AVCT_REV_1_4; |
| avrc_add_proto_desc_list.list_elem[1].params[1] = 0; |
| |
| result &= SDP_AddAdditionProtoLists( sdp_handle, 1, (tSDP_PROTO_LIST_ELEM *)&avrc_add_proto_desc_list); |
| } |
| /* add profile descriptor list */ |
| result &= SDP_AddProfileDescriptorList(sdp_handle, UUID_SERVCLASS_AV_REMOTE_CONTROL, profile_version); |
| |
| /* add supported categories */ |
| p = temp; |
| UINT16_TO_BE_STREAM(p, categories); |
| result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SUPPORTED_FEATURES, UINT_DESC_TYPE, |
| (uint32_t)2, (uint8_t*)temp); |
| |
| /* add provider name */ |
| if (p_provider_name != NULL) |
| { |
| result &= SDP_AddAttribute(sdp_handle, ATTR_ID_PROVIDER_NAME, TEXT_STR_DESC_TYPE, |
| (uint32_t)(strlen(p_provider_name)+1), (uint8_t *) p_provider_name); |
| } |
| |
| /* add service name */ |
| if (p_service_name != NULL) |
| { |
| result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SERVICE_NAME, TEXT_STR_DESC_TYPE, |
| (uint32_t)(strlen(p_service_name)+1), (uint8_t *) p_service_name); |
| } |
| |
| /* add browse group list */ |
| browse_list[0] = UUID_SERVCLASS_PUBLIC_BROWSE_GROUP; |
| result &= SDP_AddUuidSequence(sdp_handle, ATTR_ID_BROWSE_GROUP_LIST, 1, browse_list); |
| |
| |
| return (result ? AVRC_SUCCESS : AVRC_FAIL); |
| } |
| |
| |
| |
| /****************************************************************************** |
| * |
| * Function AVRC_SetTraceLevel |
| * |
| * Description Sets the trace level for AVRC. If 0xff is passed, the |
| * current trace level is returned. |
| * |
| * Input Parameters: |
| * new_level: The level to set the AVRC tracing to: |
| * 0xff-returns the current setting. |
| * 0-turns off tracing. |
| * >= 1-Errors. |
| * >= 2-Warnings. |
| * >= 3-APIs. |
| * >= 4-Events. |
| * >= 5-Debug. |
| * |
| * Returns The new trace level or current trace level if |
| * the input parameter is 0xff. |
| * |
| *****************************************************************************/ |
| uint8_t AVRC_SetTraceLevel (uint8_t new_level) |
| { |
| if (new_level != 0xFF) |
| avrc_cb.trace_level = new_level; |
| |
| return (avrc_cb.trace_level); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function AVRC_Init |
| * |
| * Description This function is called at stack startup to allocate the |
| * control block (if using dynamic memory), and initializes the |
| * control block and tracing level. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void AVRC_Init(void) |
| { |
| memset(&avrc_cb, 0, sizeof(tAVRC_CB)); |
| |
| #if defined(AVRC_INITIAL_TRACE_LEVEL) |
| avrc_cb.trace_level = AVRC_INITIAL_TRACE_LEVEL; |
| #else |
| avrc_cb.trace_level = BT_TRACE_LEVEL_NONE; |
| #endif |
| } |
| |