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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 {TimeUtils} from 'common/time_utils';
18import {Timestamp, TimestampType} from 'trace/timestamp';
19import {TraceFile} from 'trace/trace_file';
20import {TraceTreeNode} from 'trace/trace_tree_node';
21import {TraceType} from 'trace/trace_type';
22import {AbstractParser} from './abstract_parser';
23import {InputMethodManagerServiceTraceFileProto} from './proto_types';
24
25class ParserInputMethodManagerService extends AbstractParser {
26  constructor(trace: TraceFile) {
27    super(trace);
28    this.realToElapsedTimeOffsetNs = undefined;
29  }
30
31  getTraceType(): TraceType {
32    return TraceType.INPUT_METHOD_MANAGER_SERVICE;
33  }
34
35  override getMagicNumber(): number[] {
36    return ParserInputMethodManagerService.MAGIC_NUMBER;
37  }
38
39  override decodeTrace(buffer: Uint8Array): any[] {
40    const decoded = InputMethodManagerServiceTraceFileProto.decode(buffer) as any;
41    if (Object.prototype.hasOwnProperty.call(decoded, 'realToElapsedTimeOffsetNanos')) {
42      this.realToElapsedTimeOffsetNs = BigInt(decoded.realToElapsedTimeOffsetNanos);
43    } else {
44      this.realToElapsedTimeOffsetNs = undefined;
45    }
46    return decoded.entry;
47  }
48
49  protected override getTimestamp(type: TimestampType, entryProto: any): undefined | Timestamp {
50    if (type === TimestampType.ELAPSED) {
51      return new Timestamp(TimestampType.ELAPSED, BigInt(entryProto.elapsedRealtimeNanos));
52    } else if (type === TimestampType.REAL && this.realToElapsedTimeOffsetNs !== undefined) {
53      return new Timestamp(
54        type,
55        this.realToElapsedTimeOffsetNs + BigInt(entryProto.elapsedRealtimeNanos)
56      );
57    }
58    return undefined;
59  }
60
61  protected override processDecodedEntry(
62    index: number,
63    timestampType: TimestampType,
64    entryProto: TraceTreeNode
65  ): TraceTreeNode {
66    if (entryProto.elapsedRealtimeNanos === undefined) {
67      throw Error('Missing elapsedRealtimeNanos on entry');
68    }
69
70    let clockTimeNanos: bigint | undefined = undefined;
71    if (
72      this.realToElapsedTimeOffsetNs !== undefined &&
73      entryProto.elapsedRealtimeNanos !== undefined
74    ) {
75      clockTimeNanos = BigInt(entryProto.elapsedRealtimeNanos) + this.realToElapsedTimeOffsetNs;
76    }
77
78    const timestamp = Timestamp.from(
79      timestampType,
80      BigInt(entryProto.elapsedRealtimeNanos),
81      this.realToElapsedTimeOffsetNs
82    );
83
84    return {
85      name: TimeUtils.format(timestamp) + ' - ' + entryProto.where,
86      kind: 'InputMethodManagerService entry',
87      children: [
88        {
89          obj: entryProto.inputMethodManagerService,
90          kind: 'InputMethodManagerService',
91          name: '',
92          children: [],
93          stableId: 'managerservice',
94          id: 'managerservice',
95        },
96      ],
97      obj: entryProto,
98      stableId: 'entry',
99      id: 'entry',
100      elapsedRealtimeNanos: entryProto.elapsedRealtimeNanos,
101      clockTimeNanos,
102    };
103  }
104
105  private realToElapsedTimeOffsetNs: undefined | bigint;
106  private static readonly MAGIC_NUMBER = [0x09, 0x49, 0x4d, 0x4d, 0x54, 0x52, 0x41, 0x43, 0x45]; // .IMMTRACE
107}
108
109export {ParserInputMethodManagerService};
110