102 lines
3.5 KiB
JavaScript
102 lines
3.5 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 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 TimeFormatter from './TimeFormatter';
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/**
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* Formatter for framerates
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* @type {Intl} Formatter
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*/
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const frameRateFmt = new Intl.NumberFormat([], {
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maximumFractionDigits: 0,
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});
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/**
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* Formatter for sizes
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* @type {Intl} Formatter
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*/
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const sizeFmt = new Intl.NumberFormat([], {
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maximumFractionDigits: 1,
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});
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/**
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* Class encapsulating formatting of recording time ranges.
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*/
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export default class RecordingFormatter {
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/**
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* Construct with desired time format and timezone.
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*
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* @param {String} formatStr Time format string
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* @param {String} tz Timezone
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*/
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constructor(formatStr, tz) {
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this.timeFormatter_ = new TimeFormatter(formatStr, tz);
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this.singleDateStr_ = null;
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}
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/**
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* Change time format string, preserving timezone.
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*
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* @param {String} formatStr Time format string
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*/
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set timeFormat(formatStr) {
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this.timeFormatter_ = new TimeFormatter(formatStr, this.timeFormatter_.tz);
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}
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/**
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* Produce an object whose properties are individual pieces of a recording's
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* data, formatted for display purposes.
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*
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* @param {Recording} recording Recording to be formatted
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* @param {Range90k} trimRange Optional time range for trimming the
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* recording's interval
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* @return {Object} Map, keyed by _columnOrder element
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*/
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format(recording, trimRange = null) {
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const duration = recording.duration;
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const trimmedRange = recording.range90k(trimRange);
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return {
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start: this.timeFormatter_.formatTimeStamp90k(trimmedRange.startTime90k),
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end: this.timeFormatter_.formatTimeStamp90k(trimmedRange.endTime90k),
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resolution:
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recording.videoSampleEntryWidth +
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'x' +
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recording.videoSampleEntryHeight,
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frameRate: frameRateFmt.format(recording.videoSamples / duration),
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size: sizeFmt.format(recording.sampleFileBytes / 1048576) + ' MB',
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rate:
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sizeFmt.format(recording.sampleFileBytes / duration * 0.000008) +
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' Mbps',
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};
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}
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}
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