1 /* 2 * Copyright 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 // 18 // Interface to the A2DP LDAC ABR 19 // 20 21 #ifndef A2DP_VENDOR_LDAC_ABR_H 22 #define A2DP_VENDOR_LDAC_ABR_H 23 24 #include <stdio.h> 25 26 #include <ldacBT_abr.h> 27 28 // Initial EQMID for ABR mode. 29 #define LDAC_ABR_MODE_EQMID LDACBT_EQMID_SQ 30 31 // Loads the LDAC ABR library. 32 // Return true on success, otherwise false. 33 bool A2DP_VendorLoadLdacAbr(void); 34 35 // Unloads the LDAC ABR library. 36 void A2DP_VendorUnloadLdacAbr(void); 37 38 // Gets the LDAC ABR handle. 39 // Return the LDAC ABR handle. 40 HANDLE_LDAC_ABR a2dp_ldac_abr_get_handle(void); 41 42 // Free the LDAC ABR handle. 43 void a2dp_ldac_abr_free_handle(HANDLE_LDAC_ABR hLdacAbr); 44 45 // Initializes the LDAC ABR handle. 46 // Return 0 on success, or -1 on failure. 47 int a2dp_ldac_abr_init(HANDLE_LDAC_ABR hLdacAbr, unsigned int interval_ms); 48 49 // Sets thresholds for the LDAC ABR handle. 50 // Return 0 on success, or -1 on failure. 51 int a2dp_ldac_abr_set_thresholds(HANDLE_LDAC_ABR hLdacAbr, 52 unsigned int th_critical, 53 unsigned int th_dangerous_trend, 54 unsigned int th_4hqsq); 55 56 // LDAC ABR main process. 57 // It controls LDAC encoder bit rate based on A2DP transmit queue length. 58 // return current EQMID of LDAC encoder. 59 int a2dp_ldac_abr_proc(HANDLE_LDAC_BT hLdacParam, HANDLE_LDAC_ABR hLdacAbr, 60 size_t transmit_queue_length, unsigned int flag_enable); 61 62 #endif // A2DP_VENDOR_LDAC_ENCODER_H 63