1/* 2 * Copyright (C) 2022 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 17import {WindowManagerState} from 'trace/flickerlib/windows/WindowManagerState'; 18import {Timestamp, TimestampType} from 'trace/timestamp'; 19import {TraceFile} from 'trace/trace_file'; 20import {TraceType} from 'trace/trace_type'; 21import {AbstractParser} from './abstract_parser'; 22import {WindowManagerServiceDumpProto} from './proto_types'; 23 24class ParserWindowManagerDump extends AbstractParser { 25 constructor(trace: TraceFile) { 26 super(trace); 27 } 28 29 override getTraceType(): TraceType { 30 return TraceType.WINDOW_MANAGER; 31 } 32 33 override getMagicNumber(): undefined { 34 return undefined; 35 } 36 37 override decodeTrace(buffer: Uint8Array): any[] { 38 const entryProto = WindowManagerServiceDumpProto.decode(buffer); 39 40 // This parser is prone to accepting invalid inputs because it lacks a magic 41 // number. Let's reduce the chances of accepting invalid inputs by making 42 // sure that a trace entry can actually be created from the decoded proto. 43 // If the trace entry creation fails, an exception is thrown and the parser 44 // will be considered unsuited for this input data. 45 this.processDecodedEntry(0, TimestampType.ELAPSED /*irrelevant for dump*/, entryProto); 46 47 return [entryProto]; 48 } 49 50 override getTimestamp(type: TimestampType, entryProto: any): undefined | Timestamp { 51 if (type === TimestampType.ELAPSED) { 52 return new Timestamp(TimestampType.ELAPSED, 0n); 53 } else if (type === TimestampType.REAL) { 54 return new Timestamp(TimestampType.REAL, 0n); 55 } 56 return undefined; 57 } 58 59 override processDecodedEntry( 60 index: number, 61 timestampType: TimestampType, 62 entryProto: any 63 ): WindowManagerState { 64 return WindowManagerState.fromProto(entryProto); 65 } 66} 67 68export {ParserWindowManagerDump}; 69