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.wm.traces.common.layers
18 
19 import com.android.server.wm.traces.common.ITrace
20 
21 /**
22  * Contains a collection of parsed Layers trace entries and assertions to apply over a single entry.
23  *
24  * Each entry is parsed into a list of [LayerTraceEntry] objects.
25  *
26  * This is a generic object that is reused by both Flicker and Winscope and cannot
27  * access internal Java/Android functionality
28  *
29  */
30 data class LayersTrace(
31     override val entries: Array<LayerTraceEntry>,
32     override val source: String = ""
33 ) : ITrace<LayerTraceEntry>, List<LayerTraceEntry> by entries.toList() {
34     constructor(entry: LayerTraceEntry): this(arrayOf(entry))
35 
toStringnull36     override fun toString(): String {
37         return "LayersTrace(Start: ${entries.first()}, " +
38             "End: ${entries.last()})"
39     }
40 
equalsnull41     override fun equals(other: Any?): Boolean {
42         if (this === other) return true
43         if (other !is LayersTrace) return false
44 
45         if (!entries.contentEquals(other.entries)) return false
46         if (source != other.source) return false
47 
48         return true
49     }
50 
hashCodenull51     override fun hashCode(): Int {
52         var result = entries.contentHashCode()
53         result = 31 * result + source.hashCode()
54         return result
55     }
56 
57     /**
58      * Split the trace by the start and end timestamp.
59      *
60      * @param from the start timestamp
61      * @param to the end timestamp
62      * @return the subtrace trace(from, to)
63      */
filternull64     fun filter(from: Long, to: Long): LayersTrace {
65         return LayersTrace(
66             this.entries
67                 .dropWhile { it.timestamp < from }
68                 .dropLastWhile { it.timestamp > to }
69                 .toTypedArray(),
70             source = "")
71     }
72 }
73