import React from 'react'; import PropTypes from 'prop-types'; import { defineMessages, injectIntl } from 'react-intl'; import { formatTime } from 'mastodon/features/video'; import Icon from 'mastodon/components/icon'; import classNames from 'classnames'; import { throttle } from 'lodash'; import { encode, decode } from 'blurhash'; import { getPointerPosition, fileNameFromURL } from 'mastodon/features/video'; const digitCharacters = [ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '#', '$', '%', '*', '+', ',', '-', '.', ':', ';', '=', '?', '@', '[', ']', '^', '_', '{', '|', '}', '~', ]; const decode83 = (str) => { let value = 0; let c, digit; for (let i = 0; i < str.length; i++) { c = str[i]; digit = digitCharacters.indexOf(c); value = value * 83 + digit; } return value; }; const decodeRGB = int => ({ r: Math.max(0, (int >> 16)), g: Math.max(0, (int >> 8) & 255), b: Math.max(0, (int & 255)), }); const luma = ({ r, g, b }) => 0.2126 * r + 0.7152 * g + 0.0722 * b; const adjustColor = ({ r, g, b }, lumaThreshold = 100) => { let delta; if (luma({ r, g, b }) >= lumaThreshold) { delta = -80; } else { delta = 80; } return { r: r + delta, g: g + delta, b: b + delta, }; }; const messages = defineMessages({ play: { id: 'video.play', defaultMessage: 'Play' }, pause: { id: 'video.pause', defaultMessage: 'Pause' }, mute: { id: 'video.mute', defaultMessage: 'Mute sound' }, unmute: { id: 'video.unmute', defaultMessage: 'Unmute sound' }, download: { id: 'video.download', defaultMessage: 'Download file' }, }); const TICK_SIZE = 10; const PADDING = 180; export default @injectIntl class Audio extends React.PureComponent { static propTypes = { src: PropTypes.string.isRequired, alt: PropTypes.string, poster: PropTypes.string, duration: PropTypes.number, width: PropTypes.number, height: PropTypes.number, editable: PropTypes.bool, intl: PropTypes.object.isRequired, cacheWidth: PropTypes.func, }; state = { width: this.props.width, currentTime: 0, buffer: 0, duration: null, paused: true, muted: false, volume: 0.5, dragging: false, color: { r: 255, g: 255, b: 255 }, }; setPlayerRef = c => { this.player = c; if (c) { const width = c.offsetWidth; const height = width / (16/9); if (this.props.cacheWidth) { this.props.cacheWidth(width); } this.setState({ width, height }); } } setSeekRef = c => { this.seek = c; } setVolumeRef = c => { this.volume = c; } setAudioRef = c => { this.audio = c; if (this.audio) { this.setState({ volume: this.audio.volume, muted: this.audio.muted }); } } setBlurhashCanvasRef = c => { this.blurhashCanvas = c; } setCanvasRef = c => { this.canvas = c; if (c) { this.canvasContext = c.getContext('2d'); } } componentDidMount () { window.addEventListener('scroll', this.handleScroll); const img = new Image(); img.crossOrigin = 'anonymous'; img.onload = () => this.handlePosterLoad(img); img.src = this.props.poster; } componentDidUpdate (prevProps, prevState) { if (prevProps.poster !== this.props.poster) { const img = new Image(); img.crossOrigin = 'anonymous'; img.onload = () => this.handlePosterLoad(img); img.src = this.props.poster; } if (prevState.blurhash !== this.state.blurhash) { const context = this.blurhashCanvas.getContext('2d'); const pixels = decode(this.state.blurhash, 32, 32); const outputImageData = new ImageData(pixels, 32, 32); context.putImageData(outputImageData, 0, 0); } this._clear(); this._draw(); } componentWillUnmount () { window.removeEventListener('scroll', this.handleScroll); } togglePlay = () => { if (this.state.paused) { this.setState({ paused: false }, () => this.audio.play()); } else { this.setState({ paused: true }, () => this.audio.pause()); } } handlePlay = () => { this.setState({ paused: false }); if (this.canvas && !this.audioContext) { this._initAudioContext(); } if (this.audioContext && this.audioContext.state === 'suspended') { this.audioContext.resume(); } this._renderCanvas(); } handlePause = () => { this.setState({ paused: true }); if (this.audioContext) { this.audioContext.suspend(); } } handleProgress = () => { if (this.audio.buffered.length > 0) { this.setState({ buffer: this.audio.buffered.end(0) / this.audio.duration * 100 }); } } toggleMute = () => { const muted = !this.state.muted; this.setState({ muted }, () => { this.audio.muted = muted; }); } handleVolumeMouseDown = e => { document.addEventListener('mousemove', this.handleMouseVolSlide, true); document.addEventListener('mouseup', this.handleVolumeMouseUp, true); document.addEventListener('touchmove', this.handleMouseVolSlide, true); document.addEventListener('touchend', this.handleVolumeMouseUp, true); this.handleMouseVolSlide(e); e.preventDefault(); e.stopPropagation(); } handleVolumeMouseUp = () => { document.removeEventListener('mousemove', this.handleMouseVolSlide, true); document.removeEventListener('mouseup', this.handleVolumeMouseUp, true); document.removeEventListener('touchmove', this.handleMouseVolSlide, true); document.removeEventListener('touchend', this.handleVolumeMouseUp, true); } handleMouseDown = e => { document.addEventListener('mousemove', this.handleMouseMove, true); document.addEventListener('mouseup', this.handleMouseUp, true); document.addEventListener('touchmove', this.handleMouseMove, true); document.addEventListener('touchend', this.handleMouseUp, true); this.setState({ dragging: true }); this.audio.pause(); this.handleMouseMove(e); e.preventDefault(); e.stopPropagation(); } handleMouseUp = () => { document.removeEventListener('mousemove', this.handleMouseMove, true); document.removeEventListener('mouseup', this.handleMouseUp, true); document.removeEventListener('touchmove', this.handleMouseMove, true); document.removeEventListener('touchend', this.handleMouseUp, true); this.setState({ dragging: false }); this.audio.play(); } handleMouseMove = throttle(e => { const { x } = getPointerPosition(this.seek, e); const currentTime = Math.floor(this.audio.duration * x); if (!isNaN(currentTime)) { this.setState({ currentTime }, () => { this.audio.currentTime = currentTime; }); } }, 60); handleTimeUpdate = () => { this.setState({ currentTime: Math.floor(this.audio.currentTime), duration: Math.floor(this.audio.duration), }); } handleMouseVolSlide = throttle(e => { const { x } = getPointerPosition(this.volume, e); if(!isNaN(x)) { this.setState({ volume: x }, () => { this.audio.volume = x; }); } }, 60); handleScroll = throttle(() => { if (!this.canvas || !this.audio) { return; } const { top, height } = this.canvas.getBoundingClientRect(); const inView = (top <= (window.innerHeight || document.documentElement.clientHeight)) && (top + height >= 0); if (!this.state.paused && !inView) { this.setState({ paused: true }, () => this.audio.pause()); } }, 150, { trailing: true }); handleMouseEnter = () => { this.setState({ hovered: true }); } handleMouseLeave = () => { this.setState({ hovered: false }); } _initAudioContext () { const context = new AudioContext(); const analyser = context.createAnalyser(); const source = context.createMediaElementSource(this.audio); analyser.smoothingTimeConstant = 0.6; analyser.fftSize = 2048; source.connect(analyser); source.connect(context.destination); this.audioContext = context; this.analyser = analyser; } handlePosterLoad = image => { const canvas = document.createElement('canvas'); const context = canvas.getContext('2d'); canvas.width = image.width; canvas.height = image.height; context.drawImage(image, 0, 0); const inputImageData = context.getImageData(0, 0, image.width, image.height); const blurhash = encode(inputImageData.data, image.width, image.height, 4, 4); const averageColor = decodeRGB(decode83(blurhash.slice(2, 6))); this.setState({ blurhash, color: adjustColor(averageColor), darkText: luma(averageColor) >= 165, }); } handleDownload = () => { fetch(this.props.src).then(res => res.blob()).then(blob => { const element = document.createElement('a'); const objectURL = URL.createObjectURL(blob); element.setAttribute('href', objectURL); element.setAttribute('download', fileNameFromURL(this.props.src)); document.body.appendChild(element); element.click(); document.body.removeChild(element); URL.revokeObjectURL(objectURL); }).catch(err => { console.error(err); }); } _renderCanvas () { requestAnimationFrame(() => { this._clear(); this._draw(); if (!this.state.paused) { this._renderCanvas(); } }); } _clear () { this.canvasContext.clearRect(0, 0, this.state.width, this.state.height); } _draw () { this.canvasContext.save(); const ticks = this._getTicks(360 * this._getScaleCoefficient(), TICK_SIZE); ticks.forEach(tick => { this._drawTick(tick.x1, tick.y1, tick.x2, tick.y2); }); this.canvasContext.restore(); } _getRadius () { return parseInt(((this.state.height || this.props.height) - (PADDING * this._getScaleCoefficient()) * 2) / 2); } _getScaleCoefficient () { return (this.state.height || this.props.height) / 982; } _getTicks (count, size, animationParams = [0, 90]) { const radius = this._getRadius(); const ticks = this._getTickPoints(count); const lesser = 200; const m = []; const bufferLength = this.analyser ? this.analyser.frequencyBinCount : 0; const frequencyData = new Uint8Array(bufferLength); const allScales = []; const scaleCoefficient = this._getScaleCoefficient(); if (this.analyser) { this.analyser.getByteFrequencyData(frequencyData); } ticks.forEach((tick, i) => { const coef = 1 - i / (ticks.length * 2.5); let delta = ((frequencyData[i] || 0) - lesser * coef) * scaleCoefficient; if (delta < 0) { delta = 0; } let k; if (animationParams[0] <= tick.angle && tick.angle <= animationParams[1]) { k = radius / (radius - this._getSize(tick.angle, animationParams[0], animationParams[1]) - delta); } else { k = radius / (radius - (size + delta)); } const x1 = tick.x * (radius - size); const y1 = tick.y * (radius - size); const x2 = x1 * k; const y2 = y1 * k; m.push({ x1, y1, x2, y2 }); if (i < 20) { let scale = delta / (200 * scaleCoefficient); scale = scale < 1 ? 1 : scale; allScales.push(scale); } }); const scale = allScales.reduce((pv, cv) => pv + cv, 0) / allScales.length; return m.map(({ x1, y1, x2, y2 }) => ({ x1: x1, y1: y1, x2: x2 * scale, y2: y2 * scale, })); } _getSize (angle, l, r) { const scaleCoefficient = this._getScaleCoefficient(); const maxTickSize = TICK_SIZE * 9 * scaleCoefficient; const m = (r - l) / 2; const x = (angle - l); let h; if (x === m) { return maxTickSize; } const d = Math.abs(m - x); const v = 40 * Math.sqrt(1 / d); if (v > maxTickSize) { h = maxTickSize; } else { h = Math.max(TICK_SIZE, v); } return h; } _getTickPoints (count) { const PI = 360; const coords = []; const step = PI / count; let rad; for(let deg = 0; deg < PI; deg += step) { rad = deg * Math.PI / (PI / 2); coords.push({ x: Math.cos(rad), y: -Math.sin(rad), angle: deg }); } return coords; } _drawTick (x1, y1, x2, y2) { const radius = this._getRadius(); const cx = parseInt(this.state.width / 2); const cy = parseInt(radius + (PADDING * this._getScaleCoefficient())); const dx1 = parseInt(cx + x1); const dy1 = parseInt(cy + y1); const dx2 = parseInt(cx + x2); const dy2 = parseInt(cy + y2); const gradient = this.canvasContext.createLinearGradient(dx1, dy1, dx2, dy2); const mainColor = `rgb(${this.state.color.r}, ${this.state.color.g}, ${this.state.color.b})`; const lastColor = `rgba(${this.state.color.r}, ${this.state.color.g}, ${this.state.color.b}, 0)`; gradient.addColorStop(0, mainColor); gradient.addColorStop(0.6, mainColor); gradient.addColorStop(1, lastColor); this.canvasContext.beginPath(); this.canvasContext.strokeStyle = gradient; this.canvasContext.lineWidth = 2; this.canvasContext.moveTo(dx1, dy1); this.canvasContext.lineTo(dx2, dy2); this.canvasContext.stroke(); } _getColor () { return `rgb(${this.state.color.r}, ${this.state.color.g}, ${this.state.color.b})`; } render () { const { src, intl, alt, editable } = this.props; const { paused, muted, volume, currentTime, duration, buffer, darkText, dragging } = this.state; const progress = (currentTime / duration) * 100; return (