Proof of concept for input field with routing to video page
This commit is contained in:
parent
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commit
374137256e
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@ -14,6 +14,7 @@
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"google-protobuf": "^3.19.0",
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"react": "^17.0.2",
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"react-dom": "^17.0.2",
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"react-router-dom": "^6.2.1",
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"react-scripts": "4.0.3",
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"typescript": "^4.1.2",
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"web-vitals": "^1.0.1"
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@ -1,403 +1,24 @@
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import {
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MediaSet,
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GrpcWebImpl,
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MediaSetServiceClientImpl,
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GetVideoProgress,
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GetPeaksProgress,
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} from './generated/media_set';
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import { BrowserRouter, Route, Routes } from "react-router-dom";
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import HomePage from "./components/HomePage";
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import VideoPage from "./components/VideoPage";
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import { GrpcWebImpl } from "./generated/media_set";
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import "./App.css";
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import { useState, useEffect, useRef, useCallback } from 'react';
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import { AudioFormat } from './generated/media_set';
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import { VideoPreview } from './VideoPreview';
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import { Overview, CanvasLogicalWidth } from './Overview';
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import { Waveform } from './Waveform';
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import { ControlBar } from './ControlBar';
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import { SeekBar } from './SeekBar';
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import './App.css';
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import { Duration } from './generated/google/protobuf/duration';
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import { firstValueFrom, from, Observable } from 'rxjs';
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import { first, map } from 'rxjs/operators';
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// ported from backend, where should they live?
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const thumbnailWidth = 177;
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const thumbnailHeight = 100;
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const initialViewportCanvasPixels = 100;
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const apiURL = process.env.REACT_APP_API_URL || 'http://localhost:8888';
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// Frames represents a range of audio frames.
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export interface Frames {
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start: number;
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end: number;
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}
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export interface VideoPosition {
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currentTime: number;
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percent: number;
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}
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const video = document.createElement('video');
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const audio = document.createElement('audio');
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const apiURL = process.env.REACT_APP_API_URL || "http://localhost:8888";
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function App(): JSX.Element {
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const [mediaSet, setMediaSet] = useState<MediaSet | null>(null);
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const [viewport, setViewport] = useState<Frames>({ start: 0, end: 0 });
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const [selection, setSelection] = useState<Frames>({ start: 0, end: 0 });
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const [overviewPeaks, setOverviewPeaks] = useState<Observable<number[]>>(
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from([])
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);
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// position stores the current playback position. positionRef makes it
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// available inside a setInterval callback.
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const [position, setPosition] = useState({ currentTime: 0, percent: 0 });
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const positionRef = useRef(position);
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positionRef.current = position;
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// effects
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// TODO: error handling
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const videoID = new URLSearchParams(window.location.search).get('video_id');
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if (videoID == null) {
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return <></>;
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}
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// fetch mediaset on page load:
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useEffect(() => {
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(async function () {
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const rpc = newRPC();
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const service = new MediaSetServiceClientImpl(rpc);
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const mediaSet = await service.Get({ youtubeId: videoID });
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console.log('got media set:', mediaSet);
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setMediaSet(mediaSet);
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})();
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}, []);
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const updatePlayerPositionIntevalMillis = 30;
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// setup player on first page load only:
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useEffect(() => {
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if (mediaSet == null) {
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return;
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}
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const intervalID = setInterval(() => {
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const currTime = audio.currentTime;
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if (currTime == positionRef.current.currentTime) {
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return;
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}
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const duration = mediaSet.audioFrames / mediaSet.audioSampleRate;
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const percent = (currTime / duration) * 100;
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// check if the end of selection has been passed, and pause if so:
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if (
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currentTimeToFrame(position.currentTime) < selection.end &&
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currentTimeToFrame(currTime) >= selection.end
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) {
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handlePause();
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}
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// update the current position
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setPosition({ currentTime: audio.currentTime, percent: percent });
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}, updatePlayerPositionIntevalMillis);
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return () => clearInterval(intervalID);
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}, [mediaSet, selection]);
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// bind to keypress handler.
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// selection is a dependency of the handleKeyPress handler, and must be
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// included here.
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useEffect(() => {
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document.addEventListener('keypress', handleKeyPress);
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return () => document.removeEventListener('keypress', handleKeyPress);
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}, [selection]);
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// load audio when MediaSet is loaded:
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useEffect(() => {
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(async function () {
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if (mediaSet == null) {
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return;
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}
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console.log('fetching audio...');
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const service = new MediaSetServiceClientImpl(newRPC());
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const audioProgressStream = service.GetPeaks({
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id: mediaSet.id,
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numBins: CanvasLogicalWidth,
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});
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const peaks = audioProgressStream.pipe(map((progress) => progress.peaks));
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setOverviewPeaks(peaks);
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const pipe = audioProgressStream.pipe(
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first((progress: GetPeaksProgress) => progress.url != '')
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);
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const progressWithURL = await firstValueFrom(pipe);
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audio.src = progressWithURL.url;
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audio.muted = false;
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audio.volume = 1;
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console.log('set audio src', progressWithURL.url);
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})();
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}, [mediaSet]);
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// load video when MediaSet is loaded:
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useEffect(() => {
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(async function () {
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if (mediaSet == null) {
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return;
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}
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console.log('fetching video...');
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const service = new MediaSetServiceClientImpl(newRPC());
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const videoProgressStream = service.GetVideo({ id: mediaSet.id });
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const pipe = videoProgressStream.pipe(
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first((progress: GetVideoProgress) => progress.url != '')
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);
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const progressWithURL = await firstValueFrom(pipe);
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video.src = progressWithURL.url;
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console.log('set video src', progressWithURL.url);
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})();
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}, [mediaSet]);
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// set viewport when MediaSet is loaded:
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useEffect(() => {
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if (mediaSet == null) {
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return;
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}
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const numFrames = Math.min(
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Math.round(mediaSet.audioFrames / CanvasLogicalWidth) *
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initialViewportCanvasPixels,
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mediaSet.audioFrames
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);
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setViewport({ start: 0, end: numFrames });
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}, [mediaSet]);
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useEffect(() => {
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console.debug('viewport updated', viewport);
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}, [viewport]);
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// handlers
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const handleKeyPress = useCallback(
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(evt: KeyboardEvent) => {
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if (evt.code != 'Space') {
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return;
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}
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if (audio.paused) {
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handlePlay();
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} else {
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handlePause();
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}
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},
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[selection]
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);
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// handler called when the selection in the overview (zoom setting) is changed.
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const handleOverviewSelectionChange = useCallback(
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(newViewport: Frames) => {
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if (mediaSet == null) {
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return;
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}
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console.log('set new viewport', newViewport);
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setViewport({ ...newViewport });
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if (!audio.paused) {
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return;
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}
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setPositionFromFrame(newViewport.start);
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},
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[mediaSet, audio, video, selection]
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);
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// handler called when the selection in the main waveform view is changed.
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const handleWaveformSelectionChange = useCallback(
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(newSelection: Frames) => {
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setSelection(newSelection);
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if (mediaSet == null) {
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return;
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}
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// move playback position to start of selection
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const ratio = newSelection.start / mediaSet.audioFrames;
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const currentTime =
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(mediaSet.audioFrames / mediaSet.audioSampleRate) * ratio;
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audio.currentTime = currentTime;
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video.currentTime = currentTime;
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},
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[mediaSet, audio, video, selection]
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);
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const handlePlay = useCallback(() => {
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audio.play();
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video.play();
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}, [audio, video]);
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const handlePause = useCallback(() => {
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video.pause();
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audio.pause();
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if (selection.start != selection.end) {
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setPositionFromFrame(selection.start);
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}
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}, [audio, video, selection]);
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const handleClip = useCallback(() => {
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(async function () {
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console.debug('clip', selection);
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if (mediaSet == null) {
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return;
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}
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// TODO: support File System Access API fallback
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const h = await window.showSaveFilePicker({ suggestedName: 'clip.mp3' });
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const fileStream = await h.createWritable();
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const rpc = newRPC();
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const service = new MediaSetServiceClientImpl(rpc);
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const stream = service.GetAudioSegment({
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id: mediaSet.id,
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format: AudioFormat.MP3,
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startFrame: selection.start,
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endFrame: selection.end,
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});
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await stream.forEach((p) => fileStream.write(p.audioData));
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console.debug('finished writing stream');
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await fileStream.close();
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console.debug('closed stream');
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})();
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}, [mediaSet, selection]);
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const setPositionFromFrame = useCallback(
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(frame: number) => {
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if (mediaSet == null) {
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return;
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}
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const ratio = frame / mediaSet.audioFrames;
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const currentTime =
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(mediaSet.audioFrames / mediaSet.audioSampleRate) * ratio;
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audio.currentTime = currentTime;
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video.currentTime = currentTime;
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},
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[mediaSet, audio, video]
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);
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// helpers
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const currentTimeToFrame = useCallback(
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(currentTime: number): number => {
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if (mediaSet == null) {
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return 0;
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}
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const dur = mediaSet.audioFrames / mediaSet.audioSampleRate;
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const ratio = currentTime / dur;
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return Math.round(mediaSet.audioFrames * ratio);
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},
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[mediaSet]
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);
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// render component
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const containerStyles = {
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border: '1px solid black',
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width: '90%',
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margin: '1em auto',
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minHeight: '500px',
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height: '700px',
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display: 'flex',
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flexDirection: 'column',
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} as React.CSSProperties;
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const offsetPixels = Math.floor(thumbnailWidth / 2);
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if (mediaSet == null) {
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// TODO: improve
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return <></>;
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}
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return (
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<>
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<div className="App">
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<div style={containerStyles}>
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<ControlBar
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onPlay={handlePlay}
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onPause={handlePause}
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onClip={handleClip}
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/>
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<Overview
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peaks={overviewPeaks}
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mediaSet={mediaSet}
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offsetPixels={offsetPixels}
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height={80}
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viewport={viewport}
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position={position}
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onSelectionChange={handleOverviewSelectionChange}
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/>
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<Waveform
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mediaSet={mediaSet}
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position={position}
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viewport={viewport}
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offsetPixels={offsetPixels}
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onSelectionChange={handleWaveformSelectionChange}
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/>
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<SeekBar
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position={video.currentTime}
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duration={mediaSet.audioFrames / mediaSet.audioSampleRate}
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offsetPixels={offsetPixels}
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onPositionChanged={(position: number) => {
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video.currentTime = position;
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audio.currentTime = position;
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}}
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/>
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<VideoPreview
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mediaSet={mediaSet}
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video={video}
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position={position}
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duration={millisFromDuration(mediaSet.videoDuration)}
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height={thumbnailHeight}
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/>
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</div>
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<ul style={{ listStyleType: 'none' } as React.CSSProperties}>
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<li>Frames: {mediaSet.audioFrames}</li>
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<li>
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Viewport (frames): {viewport.start} to {viewport.end}
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</li>
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<li>
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Selection (frames): {selection.start} to {selection.end}
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</li>
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<li>
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Position (frames):{' '}
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{Math.round(mediaSet.audioFrames * (position.percent / 100))}
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</li>
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<li>Position (seconds): {position.currentTime}</li>
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<li></li>
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</ul>
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</div>
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</>
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<BrowserRouter>
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<Routes>
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<Route path="/" element={<HomePage />} />
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<Route path="/video/:videoId" element={<VideoPage />} />
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</Routes>
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</BrowserRouter>
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);
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}
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export default App;
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function millisFromDuration(dur?: Duration): number {
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if (dur == undefined) {
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return 0;
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}
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return Math.floor(dur.seconds * 1000.0 + dur.nanos / 1000.0 / 1000.0);
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}
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export function newRPC(): GrpcWebImpl {
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return new GrpcWebImpl(apiURL, {});
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}
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@ -1,6 +1,5 @@
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import { useState, useEffect, useCallback } from 'react';
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import { MediaSet } from './generated/media_set';
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import { Frames, VideoPosition } from './App';
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import { WaveformCanvas } from './WaveformCanvas';
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import { HudCanvas, EmptySelectionAction } from './HudCanvas';
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import { Observable } from 'rxjs';
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@ -1,5 +1,5 @@
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import { MediaSet, MediaSetServiceClientImpl } from './generated/media_set';
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import { newRPC, VideoPosition } from './App';
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import { newRPC } from './App';
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import { useEffect, useRef } from 'react';
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interface Props {
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@ -1,10 +1,10 @@
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import { useEffect, useState, useCallback } from 'react';
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import { Frames, VideoPosition, newRPC } from './App';
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import { MediaSetServiceClientImpl, MediaSet } from './generated/media_set';
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import { WaveformCanvas } from './WaveformCanvas';
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import { Selection, HudCanvas, EmptySelectionAction } from './HudCanvas';
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import { from, Observable } from 'rxjs';
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import { bufferCount } from 'rxjs/operators';
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import { useEffect, useState, useCallback } from "react";
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import { newRPC } from "./App";
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import { MediaSetServiceClientImpl, MediaSet } from "./generated/media_set";
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import { WaveformCanvas } from "./WaveformCanvas";
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import { Selection, HudCanvas, EmptySelectionAction } from "./HudCanvas";
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import { from, Observable } from "rxjs";
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import { bufferCount } from "rxjs/operators";
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interface Props {
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mediaSet: MediaSet;
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@ -45,7 +45,7 @@ export const Waveform: React.FC<Props> = ({
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return;
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}
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console.log('fetch audio segment, frames', viewport);
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console.log("fetch audio segment, frames", viewport);
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const service = new MediaSetServiceClientImpl(newRPC());
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const segment = await service.GetPeaksForSegment({
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@ -55,7 +55,7 @@ export const Waveform: React.FC<Props> = ({
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endFrame: viewport.end,
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});
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console.log('got segment', segment);
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console.log("got segment", segment);
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const peaks = from(segment.peaks).pipe(
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bufferCount(mediaSet.audioChannels)
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@ -119,17 +119,17 @@ export const Waveform: React.FC<Props> = ({
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// render component
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const containerStyles = {
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background: 'black',
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margin: '0 ' + offsetPixels + 'px',
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background: "black",
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margin: "0 " + offsetPixels + "px",
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flexGrow: 1,
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position: 'relative',
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position: "relative",
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} as React.CSSProperties;
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const hudStyles = {
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borderLineWidth: 0,
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borderStrokeStyle: 'transparent',
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borderStrokeStyle: "transparent",
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positionLineWidth: 6,
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positionStrokeStyle: 'red',
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positionStrokeStyle: "red",
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};
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return (
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@ -0,0 +1,40 @@
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import { ChangeEventHandler, MouseEventHandler, useState } from "react";
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import { useNavigate } from "react-router-dom";
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const extractVideoIDFromURL = (input: string): string | null => {
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const { searchParams } = new URL(input);
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return searchParams.get("v");
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};
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function HomePage(): JSX.Element {
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const [input, setInput] = useState<string>("");
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const [error, setError] = useState<string | null>(null);
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const navigate = useNavigate();
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const handleChange: ChangeEventHandler<HTMLInputElement> = (event) => {
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setInput(event.target.value);
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};
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|
||||
const handleSubmit: MouseEventHandler<HTMLButtonElement> = () => {
|
||||
try {
|
||||
const videoId = extractVideoIDFromURL(input);
|
||||
if (videoId === null) {
|
||||
setError("URL not valid, please enter a valid YouTube URL");
|
||||
} else {
|
||||
navigate(`/video/${videoId}`);
|
||||
}
|
||||
} catch (err) {
|
||||
setError("URL not valid, please enter a valid YouTube URL");
|
||||
}
|
||||
};
|
||||
|
||||
return (
|
||||
<div>
|
||||
<input value={input} onChange={handleChange} />
|
||||
<button onClick={handleSubmit}>Submit</button>
|
||||
{Boolean(error) && <div>{error}</div>}
|
||||
</div>
|
||||
);
|
||||
}
|
||||
|
||||
export default HomePage;
|
||||
|
|
@ -0,0 +1,391 @@
|
|||
import {
|
||||
MediaSet,
|
||||
MediaSetServiceClientImpl,
|
||||
GetVideoProgress,
|
||||
GetPeaksProgress,
|
||||
} from '../generated/media_set';
|
||||
|
||||
import { useState, useEffect, useRef, useCallback } from 'react';
|
||||
import { AudioFormat } from '../generated/media_set';
|
||||
import { VideoPreview } from '../VideoPreview';
|
||||
import { Overview, CanvasLogicalWidth } from '../Overview';
|
||||
import { Waveform } from '../Waveform';
|
||||
import { ControlBar } from '../ControlBar';
|
||||
import { SeekBar } from '../SeekBar';
|
||||
import { Duration } from '../generated/google/protobuf/duration';
|
||||
import { firstValueFrom, from, Observable } from 'rxjs';
|
||||
import { first, map } from 'rxjs/operators';
|
||||
import { newRPC } from '../App';
|
||||
import { useParams } from 'react-router-dom';
|
||||
|
||||
// ported from backend, where should they live?
|
||||
const thumbnailWidth = 177;
|
||||
const thumbnailHeight = 100;
|
||||
|
||||
const initialViewportCanvasPixels = 100;
|
||||
|
||||
// Frames represents a range of audio frames.
|
||||
|
||||
const video = document.createElement('video');
|
||||
const audio = document.createElement('audio');
|
||||
|
||||
type VideoPageParams = {
|
||||
videoId: string;
|
||||
}
|
||||
|
||||
function VideoPage(): JSX.Element {
|
||||
const [mediaSet, setMediaSet] = useState<MediaSet | null>(null);
|
||||
const [viewport, setViewport] = useState<Frames>({ start: 0, end: 0 });
|
||||
const [selection, setSelection] = useState<Frames>({ start: 0, end: 0 });
|
||||
const [overviewPeaks, setOverviewPeaks] = useState<Observable<number[]>>(
|
||||
from([])
|
||||
);
|
||||
const { videoId } = useParams<VideoPageParams>();
|
||||
|
||||
// position stores the current playback position. positionRef makes it
|
||||
// available inside a setInterval callback.
|
||||
const [position, setPosition] = useState({ currentTime: 0, percent: 0 });
|
||||
const positionRef = useRef(position);
|
||||
positionRef.current = position;
|
||||
|
||||
// effects
|
||||
|
||||
// TODO: error handling
|
||||
|
||||
if (videoId == null) {
|
||||
return <></>;
|
||||
}
|
||||
|
||||
// fetch mediaset on page load:
|
||||
useEffect(() => {
|
||||
(async function () {
|
||||
const rpc = newRPC();
|
||||
const service = new MediaSetServiceClientImpl(rpc);
|
||||
const mediaSet = await service.Get({ youtubeId: videoId });
|
||||
|
||||
console.log('got media set:', mediaSet);
|
||||
setMediaSet(mediaSet);
|
||||
})();
|
||||
}, []);
|
||||
|
||||
const updatePlayerPositionIntevalMillis = 30;
|
||||
|
||||
// setup player on first page load only:
|
||||
useEffect(() => {
|
||||
if (mediaSet == null) {
|
||||
return;
|
||||
}
|
||||
|
||||
const intervalID = setInterval(() => {
|
||||
const currTime = audio.currentTime;
|
||||
if (currTime == positionRef.current.currentTime) {
|
||||
return;
|
||||
}
|
||||
const duration = mediaSet.audioFrames / mediaSet.audioSampleRate;
|
||||
const percent = (currTime / duration) * 100;
|
||||
|
||||
// check if the end of selection has been passed, and pause if so:
|
||||
if (
|
||||
currentTimeToFrame(position.currentTime) < selection.end &&
|
||||
currentTimeToFrame(currTime) >= selection.end
|
||||
) {
|
||||
handlePause();
|
||||
}
|
||||
|
||||
// update the current position
|
||||
setPosition({ currentTime: audio.currentTime, percent: percent });
|
||||
}, updatePlayerPositionIntevalMillis);
|
||||
|
||||
return () => clearInterval(intervalID);
|
||||
}, [mediaSet, selection]);
|
||||
|
||||
// bind to keypress handler.
|
||||
// selection is a dependency of the handleKeyPress handler, and must be
|
||||
// included here.
|
||||
useEffect(() => {
|
||||
document.addEventListener('keypress', handleKeyPress);
|
||||
return () => document.removeEventListener('keypress', handleKeyPress);
|
||||
}, [selection]);
|
||||
|
||||
// load audio when MediaSet is loaded:
|
||||
useEffect(() => {
|
||||
(async function () {
|
||||
if (mediaSet == null) {
|
||||
return;
|
||||
}
|
||||
console.log('fetching audio...');
|
||||
const service = new MediaSetServiceClientImpl(newRPC());
|
||||
const audioProgressStream = service.GetPeaks({
|
||||
id: mediaSet.id,
|
||||
numBins: CanvasLogicalWidth,
|
||||
});
|
||||
const peaks = audioProgressStream.pipe(map((progress) => progress.peaks));
|
||||
setOverviewPeaks(peaks);
|
||||
|
||||
const pipe = audioProgressStream.pipe(
|
||||
first((progress: GetPeaksProgress) => progress.url != '')
|
||||
);
|
||||
const progressWithURL = await firstValueFrom(pipe);
|
||||
|
||||
audio.src = progressWithURL.url;
|
||||
audio.muted = false;
|
||||
audio.volume = 1;
|
||||
console.log('set audio src', progressWithURL.url);
|
||||
})();
|
||||
}, [mediaSet]);
|
||||
|
||||
// load video when MediaSet is loaded:
|
||||
useEffect(() => {
|
||||
(async function () {
|
||||
if (mediaSet == null) {
|
||||
return;
|
||||
}
|
||||
|
||||
console.log('fetching video...');
|
||||
const service = new MediaSetServiceClientImpl(newRPC());
|
||||
const videoProgressStream = service.GetVideo({ id: mediaSet.id });
|
||||
const pipe = videoProgressStream.pipe(
|
||||
first((progress: GetVideoProgress) => progress.url != '')
|
||||
);
|
||||
const progressWithURL = await firstValueFrom(pipe);
|
||||
|
||||
video.src = progressWithURL.url;
|
||||
console.log('set video src', progressWithURL.url);
|
||||
})();
|
||||
}, [mediaSet]);
|
||||
|
||||
// set viewport when MediaSet is loaded:
|
||||
useEffect(() => {
|
||||
if (mediaSet == null) {
|
||||
return;
|
||||
}
|
||||
|
||||
const numFrames = Math.min(
|
||||
Math.round(mediaSet.audioFrames / CanvasLogicalWidth) *
|
||||
initialViewportCanvasPixels,
|
||||
mediaSet.audioFrames
|
||||
);
|
||||
|
||||
setViewport({ start: 0, end: numFrames });
|
||||
}, [mediaSet]);
|
||||
|
||||
useEffect(() => {
|
||||
console.debug('viewport updated', viewport);
|
||||
}, [viewport]);
|
||||
|
||||
// handlers
|
||||
|
||||
const handleKeyPress = useCallback(
|
||||
(evt: KeyboardEvent) => {
|
||||
if (evt.code != 'Space') {
|
||||
return;
|
||||
}
|
||||
|
||||
if (audio.paused) {
|
||||
handlePlay();
|
||||
} else {
|
||||
handlePause();
|
||||
}
|
||||
},
|
||||
[selection]
|
||||
);
|
||||
|
||||
// handler called when the selection in the overview (zoom setting) is changed.
|
||||
const handleOverviewSelectionChange = useCallback(
|
||||
(newViewport: Frames) => {
|
||||
if (mediaSet == null) {
|
||||
return;
|
||||
}
|
||||
console.log('set new viewport', newViewport);
|
||||
setViewport({ ...newViewport });
|
||||
|
||||
if (!audio.paused) {
|
||||
return;
|
||||
}
|
||||
|
||||
setPositionFromFrame(newViewport.start);
|
||||
},
|
||||
[mediaSet, audio, video, selection]
|
||||
);
|
||||
|
||||
// handler called when the selection in the main waveform view is changed.
|
||||
const handleWaveformSelectionChange = useCallback(
|
||||
(newSelection: Frames) => {
|
||||
setSelection(newSelection);
|
||||
|
||||
if (mediaSet == null) {
|
||||
return;
|
||||
}
|
||||
|
||||
// move playback position to start of selection
|
||||
const ratio = newSelection.start / mediaSet.audioFrames;
|
||||
const currentTime =
|
||||
(mediaSet.audioFrames / mediaSet.audioSampleRate) * ratio;
|
||||
audio.currentTime = currentTime;
|
||||
video.currentTime = currentTime;
|
||||
},
|
||||
[mediaSet, audio, video, selection]
|
||||
);
|
||||
|
||||
const handlePlay = useCallback(() => {
|
||||
audio.play();
|
||||
video.play();
|
||||
}, [audio, video]);
|
||||
|
||||
const handlePause = useCallback(() => {
|
||||
video.pause();
|
||||
audio.pause();
|
||||
|
||||
if (selection.start != selection.end) {
|
||||
setPositionFromFrame(selection.start);
|
||||
}
|
||||
}, [audio, video, selection]);
|
||||
|
||||
const handleClip = useCallback(() => {
|
||||
(async function () {
|
||||
console.debug('clip', selection);
|
||||
|
||||
if (mediaSet == null) {
|
||||
return;
|
||||
}
|
||||
|
||||
// TODO: support File System Access API fallback
|
||||
const h = await window.showSaveFilePicker({ suggestedName: 'clip.mp3' });
|
||||
const fileStream = await h.createWritable();
|
||||
|
||||
const rpc = newRPC();
|
||||
const service = new MediaSetServiceClientImpl(rpc);
|
||||
const stream = service.GetAudioSegment({
|
||||
id: mediaSet.id,
|
||||
format: AudioFormat.MP3,
|
||||
startFrame: selection.start,
|
||||
endFrame: selection.end,
|
||||
});
|
||||
|
||||
await stream.forEach((p) => fileStream.write(p.audioData));
|
||||
console.debug('finished writing stream');
|
||||
|
||||
await fileStream.close();
|
||||
console.debug('closed stream');
|
||||
})();
|
||||
}, [mediaSet, selection]);
|
||||
|
||||
const setPositionFromFrame = useCallback(
|
||||
(frame: number) => {
|
||||
if (mediaSet == null) {
|
||||
return;
|
||||
}
|
||||
const ratio = frame / mediaSet.audioFrames;
|
||||
const currentTime =
|
||||
(mediaSet.audioFrames / mediaSet.audioSampleRate) * ratio;
|
||||
audio.currentTime = currentTime;
|
||||
video.currentTime = currentTime;
|
||||
},
|
||||
[mediaSet, audio, video]
|
||||
);
|
||||
|
||||
// helpers
|
||||
|
||||
const currentTimeToFrame = useCallback(
|
||||
(currentTime: number): number => {
|
||||
if (mediaSet == null) {
|
||||
return 0;
|
||||
}
|
||||
const dur = mediaSet.audioFrames / mediaSet.audioSampleRate;
|
||||
const ratio = currentTime / dur;
|
||||
return Math.round(mediaSet.audioFrames * ratio);
|
||||
},
|
||||
[mediaSet]
|
||||
);
|
||||
|
||||
// render component
|
||||
|
||||
const containerStyles = {
|
||||
border: '1px solid black',
|
||||
width: '90%',
|
||||
margin: '1em auto',
|
||||
minHeight: '500px',
|
||||
height: '700px',
|
||||
display: 'flex',
|
||||
flexDirection: 'column',
|
||||
} as React.CSSProperties;
|
||||
|
||||
const offsetPixels = Math.floor(thumbnailWidth / 2);
|
||||
|
||||
if (mediaSet == null) {
|
||||
// TODO: improve
|
||||
return <></>;
|
||||
}
|
||||
|
||||
return (
|
||||
<div className="App">
|
||||
<div style={containerStyles}>
|
||||
<ControlBar
|
||||
onPlay={handlePlay}
|
||||
onPause={handlePause}
|
||||
onClip={handleClip}
|
||||
/>
|
||||
|
||||
<Overview
|
||||
peaks={overviewPeaks}
|
||||
mediaSet={mediaSet}
|
||||
offsetPixels={offsetPixels}
|
||||
height={80}
|
||||
viewport={viewport}
|
||||
position={position}
|
||||
onSelectionChange={handleOverviewSelectionChange}
|
||||
/>
|
||||
|
||||
<Waveform
|
||||
mediaSet={mediaSet}
|
||||
position={position}
|
||||
viewport={viewport}
|
||||
offsetPixels={offsetPixels}
|
||||
onSelectionChange={handleWaveformSelectionChange}
|
||||
/>
|
||||
|
||||
<SeekBar
|
||||
position={video.currentTime}
|
||||
duration={mediaSet.audioFrames / mediaSet.audioSampleRate}
|
||||
offsetPixels={offsetPixels}
|
||||
onPositionChanged={(position: number) => {
|
||||
video.currentTime = position;
|
||||
audio.currentTime = position;
|
||||
}}
|
||||
/>
|
||||
|
||||
<VideoPreview
|
||||
mediaSet={mediaSet}
|
||||
video={video}
|
||||
position={position}
|
||||
duration={millisFromDuration(mediaSet.videoDuration)}
|
||||
height={thumbnailHeight}
|
||||
/>
|
||||
</div>
|
||||
<ul style={{ listStyleType: 'none' } as React.CSSProperties}>
|
||||
<li>Frames: {mediaSet.audioFrames}</li>
|
||||
<li>
|
||||
Viewport (frames): {viewport.start} to {viewport.end}
|
||||
</li>
|
||||
<li>
|
||||
Selection (frames): {selection.start} to {selection.end}
|
||||
</li>
|
||||
<li>
|
||||
Position (frames):{' '}
|
||||
{Math.round(mediaSet.audioFrames * (position.percent / 100))}
|
||||
</li>
|
||||
<li>Position (seconds): {position.currentTime}</li>
|
||||
<li></li>
|
||||
</ul>
|
||||
</div>
|
||||
);
|
||||
}
|
||||
|
||||
export default VideoPage;
|
||||
|
||||
function millisFromDuration(dur?: Duration): number {
|
||||
if (dur == undefined) {
|
||||
return 0;
|
||||
}
|
||||
return Math.floor(dur.seconds * 1000.0 + dur.nanos / 1000.0 / 1000.0);
|
||||
}
|
||||
|
|
@ -0,0 +1,9 @@
|
|||
interface Frames {
|
||||
start: number;
|
||||
end: number;
|
||||
}
|
||||
|
||||
interface VideoPosition {
|
||||
currentTime: number;
|
||||
percent: number;
|
||||
}
|
||||
|
|
@ -1172,6 +1172,13 @@
|
|||
dependencies:
|
||||
regenerator-runtime "^0.13.4"
|
||||
|
||||
"@babel/runtime@^7.7.6":
|
||||
version "7.16.7"
|
||||
resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.16.7.tgz#03ff99f64106588c9c403c6ecb8c3bafbbdff1fa"
|
||||
integrity sha512-9E9FJowqAsytyOY6LG+1KuueckRL+aQW+mKvXRXnuFGyRAyepJPmEo9vgMfXUA6O9u3IeEdv9MAkppFcaQwogQ==
|
||||
dependencies:
|
||||
regenerator-runtime "^0.13.4"
|
||||
|
||||
"@babel/template@^7.10.4", "@babel/template@^7.16.0", "@babel/template@^7.3.3":
|
||||
version "7.16.0"
|
||||
resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.16.0.tgz#d16a35ebf4cd74e202083356fab21dd89363ddd6"
|
||||
|
|
@ -5648,6 +5655,13 @@ hex-color-regex@^1.1.0:
|
|||
resolved "https://registry.yarnpkg.com/hex-color-regex/-/hex-color-regex-1.1.0.tgz#4c06fccb4602fe2602b3c93df82d7e7dbf1a8a8e"
|
||||
integrity sha512-l9sfDFsuqtOqKDsQdqrMRk0U85RZc0RtOR9yPI7mRVOa4FsR/BVnZ0shmQRM96Ji99kYZP/7hn1cedc1+ApsTQ==
|
||||
|
||||
history@^5.2.0:
|
||||
version "5.2.0"
|
||||
resolved "https://registry.yarnpkg.com/history/-/history-5.2.0.tgz#7cdd31cf9bac3c5d31f09c231c9928fad0007b7c"
|
||||
integrity sha512-uPSF6lAJb3nSePJ43hN3eKj1dTWpN9gMod0ZssbFTIsen+WehTmEadgL+kg78xLJFdRfrrC//SavDzmRVdE+Ig==
|
||||
dependencies:
|
||||
"@babel/runtime" "^7.7.6"
|
||||
|
||||
hmac-drbg@^1.0.1:
|
||||
version "1.0.1"
|
||||
resolved "https://registry.yarnpkg.com/hmac-drbg/-/hmac-drbg-1.0.1.tgz#d2745701025a6c775a6c545793ed502fc0c649a1"
|
||||
|
|
@ -9324,6 +9338,21 @@ react-refresh@^0.8.3:
|
|||
resolved "https://registry.yarnpkg.com/react-refresh/-/react-refresh-0.8.3.tgz#721d4657672d400c5e3c75d063c4a85fb2d5d68f"
|
||||
integrity sha512-X8jZHc7nCMjaCqoU+V2I0cOhNW+QMBwSUkeXnTi8IPe6zaRWfn60ZzvFDZqWPfmSJfjub7dDW1SP0jaHWLu/hg==
|
||||
|
||||
react-router-dom@^6.2.1:
|
||||
version "6.2.1"
|
||||
resolved "https://registry.yarnpkg.com/react-router-dom/-/react-router-dom-6.2.1.tgz#32ec81829152fbb8a7b045bf593a22eadf019bec"
|
||||
integrity sha512-I6Zax+/TH/cZMDpj3/4Fl2eaNdcvoxxHoH1tYOREsQ22OKDYofGebrNm6CTPUcvLvZm63NL/vzCYdjf9CUhqmA==
|
||||
dependencies:
|
||||
history "^5.2.0"
|
||||
react-router "6.2.1"
|
||||
|
||||
react-router@6.2.1:
|
||||
version "6.2.1"
|
||||
resolved "https://registry.yarnpkg.com/react-router/-/react-router-6.2.1.tgz#be2a97a6006ce1d9123c28934e604faef51448a3"
|
||||
integrity sha512-2fG0udBtxou9lXtK97eJeET2ki5//UWfQSl1rlJ7quwe6jrktK9FCCc8dQb5QY6jAv3jua8bBQRhhDOM/kVRsg==
|
||||
dependencies:
|
||||
history "^5.2.0"
|
||||
|
||||
react-scripts@4.0.3:
|
||||
version "4.0.3"
|
||||
resolved "https://registry.yarnpkg.com/react-scripts/-/react-scripts-4.0.3.tgz#b1cafed7c3fa603e7628ba0f187787964cb5d345"
|
||||
|
|
|
|||
Loading…
Reference in New Issue