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
17export class ScreenRecordingUtils {
18  // Video time correction epsilon. Without correction, we could display the previous frame.
19  // This correction was already present in the legacy Winscope.
20  private static readonly EPSILON_SECONDS = 0.00001;
21
22  static timestampToVideoTimeSeconds(
23    firstTimestampNs: bigint,
24    currentTimestampNs: bigint,
25  ) {
26    const videoTimeSeconds =
27      Number(currentTimestampNs - firstTimestampNs) / 1000000000 +
28      ScreenRecordingUtils.EPSILON_SECONDS;
29    return videoTimeSeconds;
30  }
31}
32