1 /****************************************************************************** 2 * 3 * Copyright (C) 2000-2012 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 // A2DP API 21 // 22 23 #ifndef A2DP_API_H 24 #define A2DP_API_H 25 26 #include <inttypes.h> 27 28 #include "a2dp_constants.h" 29 #include "a2dp_error_codes.h" 30 #include "sdp_api.h" 31 32 /***************************************************************************** 33 * constants 34 ****************************************************************************/ 35 36 // 37 // |MAX_PCM_FRAME_NUM_PER_TICK| controls how many buffers we can hold in 38 // the A2DP buffer queues during temporary link congestion. 39 // 40 #ifndef MAX_PCM_FRAME_NUM_PER_TICK 41 #define MAX_PCM_FRAME_NUM_PER_TICK 14 42 #endif 43 44 /* the return values from A2DP_BitsSet() */ 45 #define A2DP_SET_ONE_BIT 1 /* one and only one bit is set */ 46 #define A2DP_SET_ZERO_BIT 0 /* all bits clear */ 47 #define A2DP_SET_MULTL_BIT 2 /* multiple bits are set */ 48 49 /***************************************************************************** 50 * type definitions 51 ****************************************************************************/ 52 53 /* This data type is used in A2DP_FindService() to initialize the SDP database 54 * to hold the result service search. */ 55 typedef struct { 56 uint32_t db_len; /* Length, in bytes, of the discovery database */ 57 uint16_t num_attr; /* The number of attributes in p_attrs */ 58 uint16_t* p_attrs; /* The attributes filter. If NULL, A2DP API sets the 59 * attribute filter 60 * to be ATTR_ID_SERVICE_CLASS_ID_LIST, 61 * ATTR_ID_BT_PROFILE_DESC_LIST, 62 * ATTR_ID_SUPPORTED_FEATURES, ATTR_ID_SERVICE_NAME and 63 * ATTR_ID_PROVIDER_NAME. 64 * If not NULL, the input is taken as the filter. */ 65 } tA2DP_SDP_DB_PARAMS; 66 67 /* This data type is used in tA2DP_FIND_CBACK to report the result of the SDP 68 * discovery process. */ 69 typedef struct { 70 uint16_t service_len; /* Length, in bytes, of the service name */ 71 uint16_t provider_len; /* Length, in bytes, of the provider name */ 72 char* p_service_name; /* Pointer the service name. This character string may 73 * not be null terminated. 74 * Use the service_len parameter to safely copy this 75 * string */ 76 char* p_provider_name; /* Pointer the provider name. This character string 77 * may not be null terminated. 78 * Use the provider_len parameter to safely copy this 79 * string */ 80 uint16_t features; /* Profile supported features */ 81 uint16_t avdt_version; /* AVDTP protocol version */ 82 } tA2DP_Service; 83 84 /* This is the callback to notify the result of the SDP discovery process. */ 85 typedef void(tA2DP_FIND_CBACK)(bool found, tA2DP_Service* p_service); 86 87 /***************************************************************************** 88 * external function declarations 89 ****************************************************************************/ 90 /****************************************************************************** 91 * 92 * Function A2DP_AddRecord 93 * 94 * Description This function is called by a server application to add 95 * SRC or SNK information to an SDP record. Prior to 96 * calling this function the application must call 97 * SDP_CreateRecord() to create an SDP record. 98 * 99 * Input Parameters: 100 * service_uuid: Indicates SRC or SNK. 101 * 102 * p_service_name: Pointer to a null-terminated character 103 * string containing the service name. 104 * 105 * p_provider_name: Pointer to a null-terminated character 106 * string containing the provider name. 107 * 108 * features: Profile supported features. 109 * 110 * sdp_handle: SDP handle returned by SDP_CreateRecord(). 111 * 112 * Output Parameters: 113 * None. 114 * 115 * Returns A2DP_SUCCESS if function execution succeeded, 116 * A2DP_INVALID_PARAMS if bad parameters are given. 117 * A2DP_FAIL if function execution failed. 118 * 119 *****************************************************************************/ 120 extern tA2DP_STATUS A2DP_AddRecord(uint16_t service_uuid, char* p_service_name, 121 char* p_provider_name, uint16_t features, 122 uint32_t sdp_handle); 123 124 /****************************************************************************** 125 * 126 * Function A2DP_FindService 127 * 128 * Description This function is called by a client application to 129 * perform service discovery and retrieve SRC or SNK SDP 130 * record information from a server. Information is 131 * returned for the first service record found on the 132 * server that matches the service UUID. The callback 133 * function will be executed when service discovery is 134 * complete. There can only be one outstanding call to 135 * A2DP_FindService() at a time; the application must wait 136 * for the callback before it makes another call to 137 * the function. 138 * 139 * Input Parameters: 140 * service_uuid: Indicates SRC or SNK. 141 * 142 * bd_addr: BD address of the peer device. 143 * 144 * p_db: Pointer to the information to initialize 145 * the discovery database. 146 * 147 * p_cback: Pointer to the A2DP_FindService() 148 * callback function. 149 * 150 * Output Parameters: 151 * None. 152 * 153 * Returns A2DP_SUCCESS if function execution succeeded, 154 * A2DP_INVALID_PARAMS if bad parameters are given. 155 * A2DP_BUSY if discovery is already in progress. 156 * A2DP_FAIL if function execution failed. 157 * 158 *****************************************************************************/ 159 extern tA2DP_STATUS A2DP_FindService(uint16_t service_uuid, BD_ADDR bd_addr, 160 tA2DP_SDP_DB_PARAMS* p_db, 161 tA2DP_FIND_CBACK* p_cback); 162 163 /****************************************************************************** 164 * 165 * Function A2DP_SetTraceLevel 166 * 167 * Description Sets the trace level for A2D. If 0xff is passed, the 168 * current trace level is returned. 169 * 170 * Input Parameters: 171 * new_level: The level to set the A2DP tracing to: 172 * 0xff-returns the current setting. 173 * 0-turns off tracing. 174 * >= 1-Errors. 175 * >= 2-Warnings. 176 * >= 3-APIs. 177 * >= 4-Events. 178 * >= 5-Debug. 179 * 180 * Returns The new trace level or current trace level if 181 * the input parameter is 0xff. 182 * 183 *****************************************************************************/ 184 extern uint8_t A2DP_SetTraceLevel(uint8_t new_level); 185 186 /****************************************************************************** 187 * Function A2DP_BitsSet 188 * 189 * Description Check the given num for the number of bits set 190 * Returns A2DP_SET_ONE_BIT, if one and only one bit is set 191 * A2DP_SET_ZERO_BIT, if all bits clear 192 * A2DP_SET_MULTL_BIT, if multiple bits are set 193 *****************************************************************************/ 194 extern uint8_t A2DP_BitsSet(uint64_t num); 195 196 // Initializes the A2DP control block. 197 void A2DP_Init(void); 198 199 #endif // A2DP_API_H 200