ddf9027daa
Instead of chunking the thing, we'll improve our precision and clock accuracy. Clock accuracy is improved by flagging the "load time" of the clip in the context, which can be about 500ms (or more) off the context's start line. The precision is just a number in the PlaybackWaveform component.
69 lines
2.3 KiB
TypeScript
69 lines
2.3 KiB
TypeScript
/*
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Copyright 2021 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import React from "react";
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import {replaceableComponent} from "../../../utils/replaceableComponent";
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import {arraySeed, arrayTrimFill} from "../../../utils/arrays";
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import Waveform from "./Waveform";
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import {Playback, PLAYBACK_WAVEFORM_SAMPLES} from "../../../voice/Playback";
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import {percentageOf} from "../../../utils/numbers";
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interface IProps {
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playback: Playback;
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}
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interface IState {
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heights: number[];
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progress: number;
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}
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/**
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* A waveform which shows the waveform of a previously recorded recording
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*/
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@replaceableComponent("views.voice_messages.PlaybackWaveform")
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export default class PlaybackWaveform extends React.PureComponent<IProps, IState> {
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public constructor(props) {
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super(props);
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this.state = {
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heights: this.toHeights(this.props.playback.waveform),
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progress: 0, // default no progress
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};
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this.props.playback.waveformData.onUpdate(this.onWaveformUpdate);
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this.props.playback.clockInfo.liveData.onUpdate(this.onTimeUpdate);
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}
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private toHeights(waveform: number[]) {
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const seed = arraySeed(0, PLAYBACK_WAVEFORM_SAMPLES);
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return arrayTrimFill(waveform, PLAYBACK_WAVEFORM_SAMPLES, seed);
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}
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private onWaveformUpdate = (waveform: number[]) => {
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this.setState({heights: this.toHeights(waveform)});
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};
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private onTimeUpdate = (time: number[]) => {
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// Track percentages to a general precision to avoid over-waking the component.
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const progress = Number(percentageOf(time[0], 0, time[1]).toFixed(3));
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this.setState({progress});
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};
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public render() {
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return <Waveform relHeights={this.state.heights} progress={this.state.progress} />;
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}
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}
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