1/*
2 * Copyright (C) 2017 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
17syntax = "proto2";
18option optimize_for = LITE_RUNTIME;
19
20import "frameworks/native/services/surfaceflinger/layerproto/layers.proto";
21
22package android.surfaceflinger;
23
24/* represents a file full of surface flinger trace entries.
25   Encoded, it should start with 0x4c 0x59 0x52 0x54 0x52 0x41 0x43 0x45 (.LYRTRACE), such
26   that they can be easily identified. */
27message LayersTraceFileProto {
28
29    /* constant; MAGIC_NUMBER = (long) MAGIC_NUMBER_H << 32 | MagicNumber.MAGIC_NUMBER_L
30       (this is needed because enums have to be 32 bits and there's no nice way to put 64bit
31        constants into .proto files. */
32    enum MagicNumber {
33        INVALID = 0;
34        MAGIC_NUMBER_L = 0x5452594c;  /* LYRT (little-endian ASCII) */
35        MAGIC_NUMBER_H = 0x45434152;  /* RACE (little-endian ASCII) */
36    }
37
38    optional fixed64 magic_number = 1;  /* Must be the first field, set to value in MagicNumber */
39    repeated LayersTraceProto entry = 2;
40}
41
42/* one window manager trace entry. */
43message LayersTraceProto {
44    /* required: elapsed realtime in nanos since boot of when this entry was logged */
45    optional fixed64 elapsed_realtime_nanos = 1;
46
47    /* where the trace originated */
48    optional string where = 2;
49
50    optional LayersProto layers = 3;
51}
52