1 /* 2 * Copyright (C) 2021 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 package com.android.server.uwb.params; 18 19 import static com.android.server.uwb.config.CapabilityParam.SUPPORTED_POWER_STATS_QUERY; 20 21 import android.util.Log; 22 23 import com.google.uwb.support.base.Params; 24 import com.google.uwb.support.ccc.CccParams; 25 import com.google.uwb.support.ccc.CccSpecificationParams; 26 import com.google.uwb.support.fira.FiraParams; 27 import com.google.uwb.support.fira.FiraSpecificationParams; 28 import com.google.uwb.support.generic.GenericSpecificationParams; 29 30 public class GenericDecoder extends TlvDecoder { 31 private static final String TAG = "GenericDecoder"; 32 33 @Override getParams(TlvDecoderBuffer tlvs, Class<T> paramType)34 public <T extends Params> T getParams(TlvDecoderBuffer tlvs, Class<T> paramType) { 35 if (GenericSpecificationParams.class.equals(paramType)) { 36 return (T) getSpecificationParamsFromTlvBuffer(tlvs); 37 } 38 return null; 39 } 40 getSpecificationParamsFromTlvBuffer(TlvDecoderBuffer tlvs)41 private GenericSpecificationParams getSpecificationParamsFromTlvBuffer(TlvDecoderBuffer tlvs) { 42 GenericSpecificationParams.Builder builder = new GenericSpecificationParams.Builder(); 43 try { 44 FiraSpecificationParams firaSpecificationParams = 45 TlvDecoder.getDecoder(FiraParams.PROTOCOL_NAME).getParams( 46 tlvs, FiraSpecificationParams.class); 47 builder.setFiraSpecificationParams(firaSpecificationParams); 48 } catch (IllegalArgumentException e) { 49 Log.e(TAG, "Failed to decode FIRA capabilities", e); 50 } 51 try { 52 CccSpecificationParams cccSpecificationParams = 53 TlvDecoder.getDecoder(CccParams.PROTOCOL_NAME).getParams( 54 tlvs, CccSpecificationParams.class); 55 builder.setCccSpecificationParams(cccSpecificationParams); 56 } catch (IllegalArgumentException e) { 57 Log.e(TAG, "Failed to decode CCC capabilities", e); 58 } 59 try { 60 byte supported_power_stats_query = tlvs.getByte(SUPPORTED_POWER_STATS_QUERY); 61 if (supported_power_stats_query != 0) { 62 builder.hasPowerStatsSupport(true); 63 } 64 } catch (IllegalArgumentException e) { 65 // Do nothing. By default, hasPowerStatsSupport() returns false. 66 } 67 return builder.build(); 68 } 69 } 70