| /****************************************************************************** |
| * |
| * Copyright 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 "avrc_api.h" |
| #include "avrc_int.h" |
| #include "types/bluetooth/uuid.h" |
| #include "types/raw_address.h" |
| |
| using bluetooth::Uuid; |
| |
| /***************************************************************************** |
| * Global data |
| ****************************************************************************/ |
| tAVRC_CB avrc_cb; |
| static uint16_t a2dp_attr_list_sdp[] = { |
| ATTR_ID_SERVICE_CLASS_ID_LIST, /* update A2DP_NUM_ATTR, if changed */ |
| ATTR_ID_BT_PROFILE_DESC_LIST, ATTR_ID_SUPPORTED_FEATURES, |
| ATTR_ID_SERVICE_NAME, ATTR_ID_PROTOCOL_DESC_LIST, |
| ATTR_ID_PROVIDER_NAME}; |
| |
| /****************************************************************************** |
| * |
| * 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(tSDP_STATUS 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.find_cback.Run(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) |
| * r 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, const RawAddress& bd_addr, |
| tAVRC_SDP_DB_PARAMS* p_db, |
| const tAVRC_FIND_CBACK& find_cback) { |
| bool result = true; |
| |
| 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 || find_cback.is_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; |
| |
| |
| if (p_db->p_attrs == NULL || p_db->num_attr == 0) { |
| p_db->p_attrs = a2dp_attr_list_sdp; |
| p_db->num_attr = AVRC_NUM_ATTR; |
| } |
| |
| Uuid uuid_list = Uuid::From16Bit(service_uuid); |
| result = SDP_InitDiscoveryDb(p_db->p_db, p_db->db_len, 1, &uuid_list, |
| p_db->num_attr, p_db->p_attrs); |
| |
| if (result) { |
| /* store service_uuid and discovery db pointer */ |
| avrc_cb.p_db = p_db->p_db; |
| avrc_cb.service_uuid = service_uuid; |
| avrc_cb.find_cback = find_cback; |
| |
| /* perform service search */ |
| result = |
| SDP_ServiceSearchAttributeRequest(bd_addr, p_db->p_db, avrc_sdp_cback); |
| |
| if (!result) { |
| AVRC_TRACE_ERROR("%s: Failed to init SDP for peer %s", __func__, |
| bd_addr.ToString().c_str()); |
| avrc_sdp_cback(SDP_GENERIC_ERROR); |
| } |
| } |
| |
| 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. |
| * |
| * cover_art_psm: The PSM of a cover art service, if |
| * supported. Use 0 Otherwise. Ignored on controller |
| * |
| * 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 cover_art_psm) { |
| 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: Add AVRCP SDP record, uuid: %x, profile_version: 0x%x, " |
| "supported_features: 0x%x, psm: 0x%x", __func__, service_uuid, |
| profile_version, categories, cover_art_psm); |
| |
| 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); |
| |
| uint16_t protocol_reported_version; |
| /* AVRCP versions 1.3 to 1.5 report (version - 1) in the protocol |
| descriptor list. Oh, and 1.6 and 1.6.1 report version 1.4. |
| /because-we-smart */ |
| if (profile_version < AVRC_REV_1_6) { |
| protocol_reported_version = profile_version - 1; |
| } else { |
| protocol_reported_version = AVCT_REV_1_4; |
| } |
| |
| /* 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] = protocol_reported_version; |
| avrc_proto_desc_list[index].params[1] = 0; |
| } |
| result &= SDP_AddProtocolList(sdp_handle, AVRC_NUM_PROTO_ELEMS, |
| &avrc_proto_desc_list[0]); |
| |
| /* additional protocal descriptor, required only for version > 1.3 */ |
| if (profile_version > AVRC_REV_1_3) { |
| int num_additional_protocols = 0; |
| int i = 0; |
| tSDP_PROTO_LIST_ELEM avrc_add_proto_desc_lists[2]; |
| |
| /* If we support browsing then add the list */ |
| if (browse_supported) { |
| AVRC_TRACE_API("%s: Add Browsing PSM to additonal protocol descriptor" |
| " lists", __func__); |
| num_additional_protocols++; |
| avrc_add_proto_desc_lists[i].num_elems = 2; |
| avrc_add_proto_desc_lists[i].list_elem[0].num_params = 1; |
| avrc_add_proto_desc_lists[i].list_elem[0].protocol_uuid = |
| UUID_PROTOCOL_L2CAP; |
| avrc_add_proto_desc_lists[i].list_elem[0].params[0] = AVCT_BR_PSM; |
| avrc_add_proto_desc_lists[i].list_elem[0].params[1] = 0; |
| avrc_add_proto_desc_lists[i].list_elem[1].num_params = 1; |
| avrc_add_proto_desc_lists[i].list_elem[1].protocol_uuid = |
| UUID_PROTOCOL_AVCTP; |
| avrc_add_proto_desc_lists[i].list_elem[1].params[0] = |
| protocol_reported_version; |
| avrc_add_proto_desc_lists[i].list_elem[1].params[1] = 0; |
| i++; |
| } |
| |
| /* Add the BIP PSM for cover art on 1.6+ target devices that support it */ |
| if (profile_version >= AVRC_REV_1_6 && |
| service_uuid == UUID_SERVCLASS_AV_REM_CTRL_TARGET && |
| cover_art_psm > 0) { |
| AVRC_TRACE_API("%s: Add AVRCP BIP PSM to additonal protocol descriptor" |
| " lists, psm: 0x%x", __func__, cover_art_psm); |
| num_additional_protocols++; |
| avrc_add_proto_desc_lists[i].num_elems = 2; |
| avrc_add_proto_desc_lists[i].list_elem[0].num_params = 1; |
| avrc_add_proto_desc_lists[i].list_elem[0].protocol_uuid = |
| UUID_PROTOCOL_L2CAP; |
| avrc_add_proto_desc_lists[i].list_elem[0].params[0] = cover_art_psm; |
| avrc_add_proto_desc_lists[i].list_elem[0].params[1] = 0; |
| avrc_add_proto_desc_lists[i].list_elem[1].num_params = 0; |
| avrc_add_proto_desc_lists[i].list_elem[1].protocol_uuid = |
| UUID_PROTOCOL_OBEX; |
| avrc_add_proto_desc_lists[i].list_elem[1].params[0] = 0; |
| i++; |
| } |
| |
| /* Add the additional lists if we support any */ |
| if (num_additional_protocols > 0) { |
| AVRC_TRACE_API("%s: Add %d additonal protocol descriptor lists", |
| __func__, num_additional_protocols); |
| result &= SDP_AddAdditionProtoLists(sdp_handle, num_additional_protocols, |
| avrc_add_proto_desc_lists); |
| } |
| } |
| /* 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_RemoveRecord |
| * |
| * Description This function is called to remove an AVRCP SDP record. |
| * |
| * Input Parameters: |
| * sdp_handle: Handle you used with AVRC_AddRecord |
| * |
| * Returns AVRC_SUCCESS if successful. |
| * AVRC_FAIL otherwise |
| * |
| *******************************************************************************/ |
| uint16_t AVRC_RemoveRecord(uint32_t sdp_handle) { |
| AVRC_TRACE_API("%s: remove AVRCP SDP record", __func__); |
| bool result = SDP_DeleteRecord(sdp_handle); |
| 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 |
| } |
