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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 {ImeUtils} from 'viewers/common/ime_utils';
23import {AbstractParser} from './abstract_parser';
24import {InputMethodServiceTraceFileProto} from './proto_types';
25
26class ParserInputMethodService extends AbstractParser {
27  constructor(trace: TraceFile) {
28    super(trace);
29    this.realToElapsedTimeOffsetNs = undefined;
30  }
31
32  getTraceType(): TraceType {
33    return TraceType.INPUT_METHOD_SERVICE;
34  }
35
36  override getMagicNumber(): number[] {
37    return ParserInputMethodService.MAGIC_NUMBER;
38  }
39
40  override decodeTrace(buffer: Uint8Array): any[] {
41    const decoded = InputMethodServiceTraceFileProto.decode(buffer) as any;
42    if (Object.prototype.hasOwnProperty.call(decoded, 'realToElapsedTimeOffsetNanos')) {
43      this.realToElapsedTimeOffsetNs = BigInt(decoded.realToElapsedTimeOffsetNanos);
44    } else {
45      this.realToElapsedTimeOffsetNs = undefined;
46    }
47    return decoded.entry;
48  }
49
50  override getTimestamp(type: TimestampType, entryProto: any): undefined | Timestamp {
51    if (type === TimestampType.ELAPSED) {
52      return new Timestamp(type, BigInt(entryProto.elapsedRealtimeNanos));
53    } else if (type === TimestampType.REAL && this.realToElapsedTimeOffsetNs !== undefined) {
54      return new Timestamp(
55        type,
56        this.realToElapsedTimeOffsetNs + BigInt(entryProto.elapsedRealtimeNanos)
57      );
58    }
59    return undefined;
60  }
61
62  override processDecodedEntry(
63    index: number,
64    timestampType: TimestampType,
65    entryProto: TraceTreeNode
66  ): TraceTreeNode {
67    if (entryProto.elapsedRealtimeNanos === undefined) {
68      throw Error('Missing elapsedRealtimeNanos on entry');
69    }
70
71    let clockTimeNanos: bigint | undefined = undefined;
72    if (
73      this.realToElapsedTimeOffsetNs !== undefined &&
74      entryProto.elapsedRealtimeNanos !== undefined
75    ) {
76      clockTimeNanos = BigInt(entryProto.elapsedRealtimeNanos) + this.realToElapsedTimeOffsetNs;
77    }
78
79    const timestamp = Timestamp.from(
80      timestampType,
81      BigInt(entryProto.elapsedRealtimeNanos),
82      this.realToElapsedTimeOffsetNs
83    );
84
85    return {
86      name: TimeUtils.format(timestamp) + ' - ' + entryProto.where,
87      kind: 'InputMethodService entry',
88      children: [
89        {
90          obj: ImeUtils.transformInputConnectionCall(entryProto.inputMethodService),
91          kind: 'InputMethodService',
92          name: '',
93          children: [],
94          stableId: 'service',
95          id: 'service',
96        },
97      ],
98      obj: entryProto,
99      stableId: 'entry',
100      id: 'entry',
101      elapsedRealtimeNanos: entryProto.elapsedRealtimeNanos,
102      clockTimeNanos,
103    };
104  }
105
106  private realToElapsedTimeOffsetNs: undefined | bigint;
107  private static readonly MAGIC_NUMBER = [0x09, 0x49, 0x4d, 0x53, 0x54, 0x52, 0x41, 0x43, 0x45]; // .IMSTRACE
108}
109
110export {ParserInputMethodService};
111