114 lines
3.8 KiB
JavaScript
114 lines
3.8 KiB
JavaScript
// vim: set et sw=2 ts=2:
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//
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// This file is part of Moonfire NVR, a security camera network video recorder.
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// Copyright (C) 2018-2020 The Moonfire NVR Authors
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// In addition, as a special exception, the copyright holders give
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// permission to link the code of portions of this program with the
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// OpenSSL library under certain conditions as described in each
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// individual source file, and distribute linked combinations including
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// the two.
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//
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// You must obey the GNU General Public License in all respects for all
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// of the code used other than OpenSSL. If you modify file(s) with this
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// exception, you may extend this exception to your version of the
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// file(s), but you are not obligated to do so. If you do not wish to do
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// so, delete this exception statement from your version. If you delete
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// this exception statement from all source files in the program, then
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// also delete it here.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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import Range90k from '../models/Range90k';
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/**
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* Class to encapsulate recording JSON data.
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*/
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export default class Recording {
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/**
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* Accept JSON data to be encapsulated
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*
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* @param {object} recordingJson JSON for a recording
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* @param {object} videoSampleEntryJson JSON for a video sample entry
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*/
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constructor(recordingJson, videoSampleEntryJson) {
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/** @const {!number} */
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this.startId = recordingJson.startId;
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/** @const {?number} */
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this.endId = recordingJson.endId !== undefined ? recordingJson.endId : null;
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/** @const {!number} */
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this.openId = recordingJson.openId;
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/** @const {?number} */
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this.firstUncommitted = recordingJson.firstUncommitted !== undefined ?
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recordingJson.firstUncommitted : null;
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/** @const {!boolean} */
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this.growing = recordingJson.growing || false;
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/** @const {!number} */
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this.startTime90k = recordingJson.startTime90k;
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/** @const {!number} */
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this.endTime90k = recordingJson.endTime90k;
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/** @const {!number} */
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this.sampleFileBytes = recordingJson.sampleFileBytes;
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/** @const {!number} */
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this.videoSamples = recordingJson.videoSamples;
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/** @const {!number} */
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this.videoSampleEntryWidth = videoSampleEntryJson.width;
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/** @const {!number} */
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this.videoSampleEntryHeight = videoSampleEntryJson.height;
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/** @const {!number} */
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this.videoSampleEntryPaspHSpacing = videoSampleEntryJson.paspHSpacing;
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/** @const {!number} */
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this.videoSampleEntryPaspVSpacing = videoSampleEntryJson.paspVSpacing;
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}
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/**
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* Return duration of recording in 90k units.
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* @return {Number} Time in units of 90k parts of a second
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*/
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get duration90k() {
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return this.endTime90k - this.startTime90k;
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}
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/**
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* Compute the range of the recording in 90k timestamp units,
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* optionally trimmed by another range.
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*
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* @param {Range90k} trimmedAgainst Optional range to trim against
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* @return {Range90k} Resulting range
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*/
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range90k(trimmedAgainst = null) {
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const result = new Range90k(this.startTime90k, this.endTime90k);
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return trimmedAgainst ? result.trimmed(trimmedAgainst) : result;
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}
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/**
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* Return duration of recording in seconds.
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* @return {Number} Time in units of seconds.
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*/
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get duration() {
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return this.duration90k / 90000;
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}
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}
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