/******************************************************************************
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*
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* Copyright 2003-2016 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/******************************************************************************
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*
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* AVRCP SDP related functions
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*
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******************************************************************************/
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#include <string.h>
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#include "avrc_api.h"
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#include "avrc_int.h"
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#include "bt_common.h"
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using bluetooth::Uuid;
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/*****************************************************************************
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* Global data
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****************************************************************************/
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tAVRC_CB avrc_cb;
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static uint16_t a2dp_attr_list_sdp[] = {
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ATTR_ID_SERVICE_CLASS_ID_LIST, /* update A2DP_NUM_ATTR, if changed */
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ATTR_ID_BT_PROFILE_DESC_LIST, ATTR_ID_SUPPORTED_FEATURES,
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ATTR_ID_SERVICE_NAME, ATTR_ID_PROTOCOL_DESC_LIST,
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ATTR_ID_PROVIDER_NAME};
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/******************************************************************************
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*
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* Function avrc_sdp_cback
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*
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* Description This is the SDP callback function used by A2DP_FindService.
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* This function will be executed by SDP when the service
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* search is completed. If the search is successful, it
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* finds the first record in the database that matches the
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* UUID of the search. Then retrieves various parameters
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* from the record. When it is finished it calls the
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* application callback function.
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*
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* Returns Nothing.
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*
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*****************************************************************************/
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static void avrc_sdp_cback(uint16_t status) {
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AVRC_TRACE_API("%s status: %d", __func__, status);
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/* reset service_uuid, so can start another find service */
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avrc_cb.service_uuid = 0;
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/* return info from sdp record in app callback function */
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avrc_cb.find_cback.Run(status);
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return;
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}
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/******************************************************************************
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*
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* Function AVRC_FindService
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*
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* Description This function is called by the application to perform
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* service discovery and retrieve AVRCP SDP record information
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* from a peer device. Information is returned for the first
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* service record found on the server that matches the service
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* UUID. The callback function will be executed when service
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* discovery is complete. There can only be one outstanding
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* call to AVRC_FindService() at a time; the application must
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* wait for the callback before it makes another call to the
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* function. The application is responsible for allocating
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* memory for the discovery database. It is recommended that
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* the size of the discovery database be at least 300 bytes.
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* The application can deallocate the memory after the
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* callback function has executed.
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*
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* Input Parameters:
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* service_uuid: Indicates
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* TG(UUID_SERVCLASS_AV_REM_CTRL_TARGET)
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* r CT(UUID_SERVCLASS_AV_REMOTE_CONTROL)
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*
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* bd_addr: BD address of the peer device.
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*
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* p_db: SDP discovery database parameters.
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*
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* p_cback: Pointer to the callback function.
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*
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* Output Parameters:
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* None.
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*
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* Returns AVRC_SUCCESS if successful.
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* AVRC_BAD_PARAMS if discovery database parameters are
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* invalid.
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* AVRC_NO_RESOURCES if there are not enough resources to
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* perform the service search.
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*
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*****************************************************************************/
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uint16_t AVRC_FindService(uint16_t service_uuid, const RawAddress& bd_addr,
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tAVRC_SDP_DB_PARAMS* p_db,
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const tAVRC_FIND_CBACK& find_cback) {
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bool result = true;
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AVRC_TRACE_API("%s uuid: %x", __func__, service_uuid);
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if ((service_uuid != UUID_SERVCLASS_AV_REM_CTRL_TARGET &&
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service_uuid != UUID_SERVCLASS_AV_REMOTE_CONTROL) ||
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p_db == NULL || p_db->p_db == NULL || find_cback.is_null())
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return AVRC_BAD_PARAM;
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/* check if it is busy */
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if (avrc_cb.service_uuid == UUID_SERVCLASS_AV_REM_CTRL_TARGET ||
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avrc_cb.service_uuid == UUID_SERVCLASS_AV_REMOTE_CONTROL)
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return AVRC_NO_RESOURCES;
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if (p_db->p_attrs == NULL || p_db->num_attr == 0) {
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p_db->p_attrs = a2dp_attr_list_sdp;
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p_db->num_attr = AVRC_NUM_ATTR;
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}
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Uuid uuid_list = Uuid::From16Bit(service_uuid);
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result = SDP_InitDiscoveryDb(p_db->p_db, p_db->db_len, 1, &uuid_list,
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p_db->num_attr, p_db->p_attrs);
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if (result) {
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/* store service_uuid and discovery db pointer */
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avrc_cb.p_db = p_db->p_db;
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avrc_cb.service_uuid = service_uuid;
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avrc_cb.find_cback = find_cback;
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/* perform service search */
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result =
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SDP_ServiceSearchAttributeRequest(bd_addr, p_db->p_db, avrc_sdp_cback);
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}
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return (result ? AVRC_SUCCESS : AVRC_FAIL);
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}
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/******************************************************************************
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*
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* Function AVRC_AddRecord
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*
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* Description This function is called to build an AVRCP SDP record.
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* Prior to calling this function the application must
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* call SDP_CreateRecord() to create an SDP record.
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*
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* Input Parameters:
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* service_uuid: Indicates
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* TG(UUID_SERVCLASS_AV_REM_CTRL_TARGET)
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* or CT(UUID_SERVCLASS_AV_REMOTE_CONTROL)
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*
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* p_service_name: Pointer to a null-terminated character
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* string containing the service name.
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* If service name is not used set this to NULL.
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*
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* p_provider_name: Pointer to a null-terminated character
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* string containing the provider name.
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* If provider name is not used set this to NULL.
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*
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* categories: Supported categories.
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*
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* sdp_handle: SDP handle returned by SDP_CreateRecord().
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*
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* browse_supported: browse support info.
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*
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* profile_version: profile version of avrcp record.
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*
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* Output Parameters:
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* None.
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*
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* Returns AVRC_SUCCESS if successful.
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* AVRC_NO_RESOURCES if not enough resources to build the SDP
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* record.
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*
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*****************************************************************************/
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uint16_t AVRC_AddRecord(uint16_t service_uuid, const char* p_service_name,
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const char* p_provider_name, uint16_t categories,
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uint32_t sdp_handle, bool browse_supported,
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uint16_t profile_version) {
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uint16_t browse_list[1];
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bool result = true;
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uint8_t temp[8];
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uint8_t* p;
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uint16_t count = 1;
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uint8_t index = 0;
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uint16_t class_list[2];
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AVRC_TRACE_API("%s uuid: %x", __func__, service_uuid);
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if (service_uuid != UUID_SERVCLASS_AV_REM_CTRL_TARGET &&
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service_uuid != UUID_SERVCLASS_AV_REMOTE_CONTROL)
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return AVRC_BAD_PARAM;
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/* add service class id list */
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class_list[0] = service_uuid;
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if ((service_uuid == UUID_SERVCLASS_AV_REMOTE_CONTROL) &&
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(profile_version > AVRC_REV_1_3)) {
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class_list[1] = UUID_SERVCLASS_AV_REM_CTRL_CONTROL;
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count = 2;
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}
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result &= SDP_AddServiceClassIdList(sdp_handle, count, class_list);
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uint16_t protocol_reported_version;
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/* AVRCP versions 1.3 to 1.5 report (version - 1) in the protocol
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descriptor list. Oh, and 1.6 and 1.6.1 report version 1.4.
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/because-we-smart */
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if (profile_version < AVRC_REV_1_6) {
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protocol_reported_version = profile_version - 1;
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} else {
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protocol_reported_version = AVCT_REV_1_4;
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}
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/* add protocol descriptor list */
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tSDP_PROTOCOL_ELEM avrc_proto_desc_list[AVRC_NUM_PROTO_ELEMS];
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avrc_proto_desc_list[0].num_params = 1;
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avrc_proto_desc_list[0].protocol_uuid = UUID_PROTOCOL_L2CAP;
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avrc_proto_desc_list[0].params[0] = AVCT_PSM;
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avrc_proto_desc_list[0].params[1] = 0;
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for (index = 1; index < AVRC_NUM_PROTO_ELEMS; index++) {
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avrc_proto_desc_list[index].num_params = 1;
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avrc_proto_desc_list[index].protocol_uuid = UUID_PROTOCOL_AVCTP;
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avrc_proto_desc_list[index].params[0] = protocol_reported_version;
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avrc_proto_desc_list[index].params[1] = 0;
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}
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result &= SDP_AddProtocolList(sdp_handle, AVRC_NUM_PROTO_ELEMS,
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&avrc_proto_desc_list[0]);
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/* additional protocal descriptor, required only for version > 1.3 */
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if ((profile_version > AVRC_REV_1_3) && (browse_supported)) {
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tSDP_PROTO_LIST_ELEM avrc_add_proto_desc_list;
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avrc_add_proto_desc_list.num_elems = 2;
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avrc_add_proto_desc_list.list_elem[0].num_params = 1;
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avrc_add_proto_desc_list.list_elem[0].protocol_uuid = UUID_PROTOCOL_L2CAP;
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avrc_add_proto_desc_list.list_elem[0].params[0] = AVCT_BR_PSM;
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avrc_add_proto_desc_list.list_elem[0].params[1] = 0;
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avrc_add_proto_desc_list.list_elem[1].num_params = 1;
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avrc_add_proto_desc_list.list_elem[1].protocol_uuid = UUID_PROTOCOL_AVCTP;
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avrc_add_proto_desc_list.list_elem[1].params[0] = protocol_reported_version;
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avrc_add_proto_desc_list.list_elem[1].params[1] = 0;
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result &=
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SDP_AddAdditionProtoLists(sdp_handle, 1, &avrc_add_proto_desc_list);
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}
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/* add profile descriptor list */
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result &= SDP_AddProfileDescriptorList(
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sdp_handle, UUID_SERVCLASS_AV_REMOTE_CONTROL, profile_version);
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/* add supported categories */
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p = temp;
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UINT16_TO_BE_STREAM(p, categories);
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result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SUPPORTED_FEATURES,
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UINT_DESC_TYPE, (uint32_t)2, (uint8_t*)temp);
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/* add provider name */
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if (p_provider_name != NULL) {
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result &= SDP_AddAttribute(
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sdp_handle, ATTR_ID_PROVIDER_NAME, TEXT_STR_DESC_TYPE,
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(uint32_t)(strlen(p_provider_name) + 1), (uint8_t*)p_provider_name);
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}
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/* add service name */
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if (p_service_name != NULL) {
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result &= SDP_AddAttribute(
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sdp_handle, ATTR_ID_SERVICE_NAME, TEXT_STR_DESC_TYPE,
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(uint32_t)(strlen(p_service_name) + 1), (uint8_t*)p_service_name);
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}
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/* add browse group list */
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browse_list[0] = UUID_SERVCLASS_PUBLIC_BROWSE_GROUP;
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result &= SDP_AddUuidSequence(sdp_handle, ATTR_ID_BROWSE_GROUP_LIST, 1,
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browse_list);
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return (result ? AVRC_SUCCESS : AVRC_FAIL);
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}
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/******************************************************************************
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*
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* Function AVRC_SetTraceLevel
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*
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* Description Sets the trace level for AVRC. If 0xff is passed, the
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* current trace level is returned.
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*
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* Input Parameters:
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* new_level: The level to set the AVRC tracing to:
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* 0xff-returns the current setting.
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* 0-turns off tracing.
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* >= 1-Errors.
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* >= 2-Warnings.
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* >= 3-APIs.
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* >= 4-Events.
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* >= 5-Debug.
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*
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* Returns The new trace level or current trace level if
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* the input parameter is 0xff.
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*
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*****************************************************************************/
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uint8_t AVRC_SetTraceLevel(uint8_t new_level) {
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if (new_level != 0xFF) avrc_cb.trace_level = new_level;
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return (avrc_cb.trace_level);
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}
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/*******************************************************************************
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*
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* Function AVRC_Init
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*
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* Description This function is called at stack startup to allocate the
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* control block (if using dynamic memory), and initializes the
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* control block and tracing level.
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*
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* Returns void
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*
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******************************************************************************/
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void AVRC_Init(void) {
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memset(&avrc_cb, 0, sizeof(tAVRC_CB));
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#if defined(AVRC_INITIAL_TRACE_LEVEL)
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avrc_cb.trace_level = AVRC_INITIAL_TRACE_LEVEL;
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#else
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avrc_cb.trace_level = BT_TRACE_LEVEL_NONE;
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#endif
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}
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