xVASynth-TTS / resources /app /lib /wavesurfer.js
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/*!
* wavesurfer.js 5.1.0 (2021-06-20)
* https://wavesurfer-js.org
* @license BSD-3-Clause
*/
(function webpackUniversalModuleDefinition(root, factory) {
if(typeof exports === 'object' && typeof module === 'object')
module.exports = factory();
else if(typeof define === 'function' && define.amd)
define("WaveSurfer", [], factory);
else if(typeof exports === 'object')
exports["WaveSurfer"] = factory();
else
root["WaveSurfer"] = factory();
})(this, function() {
return /******/ (() => { // webpackBootstrap
/******/ var __webpack_modules__ = ({
/***/ "./src/drawer.canvasentry.js":
/*!***********************************!*\
!*** ./src/drawer.canvasentry.js ***!
\***********************************/
/***/ ((module, exports, __webpack_require__) => {
"use strict";
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = void 0;
var _style = _interopRequireDefault(__webpack_require__(/*! ./util/style */ "./src/util/style.js"));
var _getId = _interopRequireDefault(__webpack_require__(/*! ./util/get-id */ "./src/util/get-id.js"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
/**
* The `CanvasEntry` class represents an element consisting of a wave `canvas`
* and an (optional) progress wave `canvas`.
*
* The `MultiCanvas` renderer uses one or more `CanvasEntry` instances to
* render a waveform, depending on the zoom level.
*/
var CanvasEntry = /*#__PURE__*/function () {
function CanvasEntry() {
_classCallCheck(this, CanvasEntry);
/**
* The wave node
*
* @type {HTMLCanvasElement}
*/
this.wave = null;
/**
* The wave canvas rendering context
*
* @type {CanvasRenderingContext2D}
*/
this.waveCtx = null;
/**
* The (optional) progress wave node
*
* @type {HTMLCanvasElement}
*/
this.progress = null;
/**
* The (optional) progress wave canvas rendering context
*
* @type {CanvasRenderingContext2D}
*/
this.progressCtx = null;
/**
* Start of the area the canvas should render, between 0 and 1
*
* @type {number}
*/
this.start = 0;
/**
* End of the area the canvas should render, between 0 and 1
*
* @type {number}
*/
this.end = 1;
/**
* Unique identifier for this entry
*
* @type {string}
*/
this.id = (0, _getId.default)(typeof this.constructor.name !== 'undefined' ? this.constructor.name.toLowerCase() + '_' : 'canvasentry_');
/**
* Canvas 2d context attributes
*
* @type {object}
*/
this.canvasContextAttributes = {};
}
/**
* Store the wave canvas element and create the 2D rendering context
*
* @param {HTMLCanvasElement} element The wave `canvas` element.
*/
_createClass(CanvasEntry, [{
key: "initWave",
value: function initWave(element) {
this.wave = element;
this.waveCtx = this.wave.getContext('2d', this.canvasContextAttributes);
}
/**
* Store the progress wave canvas element and create the 2D rendering
* context
*
* @param {HTMLCanvasElement} element The progress wave `canvas` element.
*/
}, {
key: "initProgress",
value: function initProgress(element) {
this.progress = element;
this.progressCtx = this.progress.getContext('2d', this.canvasContextAttributes);
}
/**
* Update the dimensions
*
* @param {number} elementWidth Width of the entry
* @param {number} totalWidth Total width of the multi canvas renderer
* @param {number} width The new width of the element
* @param {number} height The new height of the element
*/
}, {
key: "updateDimensions",
value: function updateDimensions(elementWidth, totalWidth, width, height) {
// where the canvas starts and ends in the waveform, represented as a
// decimal between 0 and 1
this.start = this.wave.offsetLeft / totalWidth || 0;
this.end = this.start + elementWidth / totalWidth; // set wave canvas dimensions
this.wave.width = width;
this.wave.height = height;
var elementSize = {
width: elementWidth + 'px'
};
(0, _style.default)(this.wave, elementSize);
if (this.hasProgressCanvas) {
// set progress canvas dimensions
this.progress.width = width;
this.progress.height = height;
(0, _style.default)(this.progress, elementSize);
}
}
/**
* Clear the wave and progress rendering contexts
*/
}, {
key: "clearWave",
value: function clearWave() {
// wave
this.waveCtx.clearRect(0, 0, this.waveCtx.canvas.width, this.waveCtx.canvas.height); // progress
if (this.hasProgressCanvas) {
this.progressCtx.clearRect(0, 0, this.progressCtx.canvas.width, this.progressCtx.canvas.height);
}
}
/**
* Set the fill styles for wave and progress
*
* @param {string} waveColor Fill color for the wave canvas
* @param {?string} progressColor Fill color for the progress canvas
*/
}, {
key: "setFillStyles",
value: function setFillStyles(waveColor, progressColor) {
this.waveCtx.fillStyle = waveColor;
if (this.hasProgressCanvas) {
this.progressCtx.fillStyle = progressColor;
}
}
/**
* Set the canvas transforms for wave and progress
*
* @param {boolean} vertical Whether to render vertically
*/
}, {
key: "applyCanvasTransforms",
value: function applyCanvasTransforms(vertical) {
if (vertical) {
// Reflect the waveform across the line y = -x
this.waveCtx.setTransform(0, 1, 1, 0, 0, 0);
if (this.hasProgressCanvas) {
this.progressCtx.setTransform(0, 1, 1, 0, 0, 0);
}
}
}
/**
* Draw a rectangle for wave and progress
*
* @param {number} x X start position
* @param {number} y Y start position
* @param {number} width Width of the rectangle
* @param {number} height Height of the rectangle
* @param {number} radius Radius of the rectangle
*/
}, {
key: "fillRects",
value: function fillRects(x, y, width, height, radius) {
this.fillRectToContext(this.waveCtx, x, y, width, height, radius);
if (this.hasProgressCanvas) {
this.fillRectToContext(this.progressCtx, x, y, width, height, radius);
}
}
/**
* Draw the actual rectangle on a `canvas` element
*
* @param {CanvasRenderingContext2D} ctx Rendering context of target canvas
* @param {number} x X start position
* @param {number} y Y start position
* @param {number} width Width of the rectangle
* @param {number} height Height of the rectangle
* @param {number} radius Radius of the rectangle
*/
}, {
key: "fillRectToContext",
value: function fillRectToContext(ctx, x, y, width, height, radius) {
if (!ctx) {
return;
}
if (radius) {
this.drawRoundedRect(ctx, x, y, width, height, radius);
} else {
ctx.fillRect(x, y, width, height);
}
}
/**
* Draw a rounded rectangle on Canvas
*
* @param {CanvasRenderingContext2D} ctx Canvas context
* @param {number} x X-position of the rectangle
* @param {number} y Y-position of the rectangle
* @param {number} width Width of the rectangle
* @param {number} height Height of the rectangle
* @param {number} radius Radius of the rectangle
*
* @return {void}
* @example drawRoundedRect(ctx, 50, 50, 5, 10, 3)
*/
}, {
key: "drawRoundedRect",
value: function drawRoundedRect(ctx, x, y, width, height, radius) {
if (height === 0) {
return;
} // peaks are float values from -1 to 1. Use absolute height values in
// order to correctly calculate rounded rectangle coordinates
if (height < 0) {
height *= -1;
y -= height;
}
ctx.beginPath();
ctx.moveTo(x + radius, y);
ctx.lineTo(x + width - radius, y);
ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
ctx.lineTo(x + width, y + height - radius);
ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
ctx.lineTo(x + radius, y + height);
ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
ctx.lineTo(x, y + radius);
ctx.quadraticCurveTo(x, y, x + radius, y);
ctx.closePath();
ctx.fill();
}
/**
* Render the actual wave and progress lines
*
* @param {number[]} peaks Array with peaks data
* @param {number} absmax Maximum peak value (absolute)
* @param {number} halfH Half the height of the waveform
* @param {number} offsetY Offset to the top
* @param {number} start The x-offset of the beginning of the area that
* should be rendered
* @param {number} end The x-offset of the end of the area that
* should be rendered
*/
}, {
key: "drawLines",
value: function drawLines(peaks, absmax, halfH, offsetY, start, end) {
this.drawLineToContext(this.waveCtx, peaks, absmax, halfH, offsetY, start, end);
if (this.hasProgressCanvas) {
this.drawLineToContext(this.progressCtx, peaks, absmax, halfH, offsetY, start, end);
}
}
/**
* Render the actual waveform line on a `canvas` element
*
* @param {CanvasRenderingContext2D} ctx Rendering context of target canvas
* @param {number[]} peaks Array with peaks data
* @param {number} absmax Maximum peak value (absolute)
* @param {number} halfH Half the height of the waveform
* @param {number} offsetY Offset to the top
* @param {number} start The x-offset of the beginning of the area that
* should be rendered
* @param {number} end The x-offset of the end of the area that
* should be rendered
*/
}, {
key: "drawLineToContext",
value: function drawLineToContext(ctx, peaks, absmax, halfH, offsetY, start, end) {
if (!ctx) {
return;
}
var length = peaks.length / 2;
var first = Math.round(length * this.start); // use one more peak value to make sure we join peaks at ends -- unless,
// of course, this is the last canvas
var last = Math.round(length * this.end) + 1;
var canvasStart = first;
var canvasEnd = last;
var scale = this.wave.width / (canvasEnd - canvasStart - 1); // optimization
var halfOffset = halfH + offsetY;
var absmaxHalf = absmax / halfH;
ctx.beginPath();
ctx.moveTo((canvasStart - first) * scale, halfOffset);
ctx.lineTo((canvasStart - first) * scale, halfOffset - Math.round((peaks[2 * canvasStart] || 0) / absmaxHalf));
var i, peak, h;
for (i = canvasStart; i < canvasEnd; i++) {
peak = peaks[2 * i] || 0;
h = Math.round(peak / absmaxHalf);
ctx.lineTo((i - first) * scale + this.halfPixel, halfOffset - h);
} // draw the bottom edge going backwards, to make a single
// closed hull to fill
var j = canvasEnd - 1;
for (j; j >= canvasStart; j--) {
peak = peaks[2 * j + 1] || 0;
h = Math.round(peak / absmaxHalf);
ctx.lineTo((j - first) * scale + this.halfPixel, halfOffset - h);
}
ctx.lineTo((canvasStart - first) * scale, halfOffset - Math.round((peaks[2 * canvasStart + 1] || 0) / absmaxHalf));
ctx.closePath();
ctx.fill();
}
/**
* Destroys this entry
*/
}, {
key: "destroy",
value: function destroy() {
this.waveCtx = null;
this.wave = null;
this.progressCtx = null;
this.progress = null;
}
/**
* Return image data of the wave `canvas` element
*
* When using a `type` of `'blob'`, this will return a `Promise` that
* resolves with a `Blob` instance.
*
* @param {string} format='image/png' An optional value of a format type.
* @param {number} quality=0.92 An optional value between 0 and 1.
* @param {string} type='dataURL' Either 'dataURL' or 'blob'.
* @return {string|Promise} When using the default `'dataURL'` `type` this
* returns a data URL. When using the `'blob'` `type` this returns a
* `Promise` that resolves with a `Blob` instance.
*/
}, {
key: "getImage",
value: function getImage(format, quality, type) {
var _this = this;
if (type === 'blob') {
return new Promise(function (resolve) {
_this.wave.toBlob(resolve, format, quality);
});
} else if (type === 'dataURL') {
return this.wave.toDataURL(format, quality);
}
}
}]);
return CanvasEntry;
}();
exports.default = CanvasEntry;
module.exports = exports.default;
/***/ }),
/***/ "./src/drawer.js":
/*!***********************!*\
!*** ./src/drawer.js ***!
\***********************/
/***/ ((module, exports, __webpack_require__) => {
"use strict";
function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = void 0;
var util = _interopRequireWildcard(__webpack_require__(/*! ./util */ "./src/util/index.js"));
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
/**
* Parent class for renderers
*
* @extends {Observer}
*/
var Drawer = /*#__PURE__*/function (_util$Observer) {
_inherits(Drawer, _util$Observer);
var _super = _createSuper(Drawer);
/**
* @param {HTMLElement} container The container node of the wavesurfer instance
* @param {WavesurferParams} params The wavesurfer initialisation options
*/
function Drawer(container, params) {
var _this;
_classCallCheck(this, Drawer);
_this = _super.call(this);
_this.container = util.withOrientation(container, params.vertical);
/**
* @type {WavesurferParams}
*/
_this.params = params;
/**
* The width of the renderer
* @type {number}
*/
_this.width = 0;
/**
* The height of the renderer
* @type {number}
*/
_this.height = params.height * _this.params.pixelRatio;
_this.lastPos = 0;
/**
* The `<wave>` element which is added to the container
* @type {HTMLElement}
*/
_this.wrapper = null;
return _this;
}
/**
* Alias of `util.style`
*
* @param {HTMLElement} el The element that the styles will be applied to
* @param {Object} styles The map of propName: attribute, both are used as-is
* @return {HTMLElement} el
*/
_createClass(Drawer, [{
key: "style",
value: function style(el, styles) {
return util.style(el, styles);
}
/**
* Create the wrapper `<wave>` element, style it and set up the events for
* interaction
*/
}, {
key: "createWrapper",
value: function createWrapper() {
this.wrapper = util.withOrientation(this.container.appendChild(document.createElement('wave')), this.params.vertical);
this.style(this.wrapper, {
display: 'block',
position: 'relative',
userSelect: 'none',
webkitUserSelect: 'none',
height: this.params.height + 'px'
});
if (this.params.fillParent || this.params.scrollParent) {
this.style(this.wrapper, {
width: '100%',
overflowX: this.params.hideScrollbar ? 'hidden' : 'auto',
overflowY: 'hidden'
});
}
this.setupWrapperEvents();
}
/**
* Handle click event
*
* @param {Event} e Click event
* @param {?boolean} noPrevent Set to true to not call `e.preventDefault()`
* @return {number} Playback position from 0 to 1
*/
}, {
key: "handleEvent",
value: function handleEvent(e, noPrevent) {
!noPrevent && e.preventDefault();
var clientX = util.withOrientation(e.targetTouches ? e.targetTouches[0] : e, this.params.vertical).clientX;
var bbox = this.wrapper.getBoundingClientRect();
var nominalWidth = this.width;
var parentWidth = this.getWidth();
var progressPixels = this.getProgressPixels(bbox, clientX);
var progress;
if (!this.params.fillParent && nominalWidth < parentWidth) {
progress = progressPixels * (this.params.pixelRatio / nominalWidth) || 0;
} else {
progress = (progressPixels + this.wrapper.scrollLeft) / this.wrapper.scrollWidth || 0;
}
return util.clamp(progress, 0, 1);
}
}, {
key: "getProgressPixels",
value: function getProgressPixels(wrapperBbox, clientX) {
if (this.params.rtl) {
return wrapperBbox.right - clientX;
} else {
return clientX - wrapperBbox.left;
}
}
}, {
key: "setupWrapperEvents",
value: function setupWrapperEvents() {
var _this2 = this;
this.wrapper.addEventListener('click', function (e) {
var orientedEvent = util.withOrientation(e, _this2.params.vertical);
var scrollbarHeight = _this2.wrapper.offsetHeight - _this2.wrapper.clientHeight;
if (scrollbarHeight !== 0) {
// scrollbar is visible. Check if click was on it
var bbox = _this2.wrapper.getBoundingClientRect();
if (orientedEvent.clientY >= bbox.bottom - scrollbarHeight) {
// ignore mousedown as it was on the scrollbar
return;
}
}
if (_this2.params.interact) {
_this2.fireEvent('click', e, _this2.handleEvent(e));
}
});
this.wrapper.addEventListener('dblclick', function (e) {
if (_this2.params.interact) {
_this2.fireEvent('dblclick', e, _this2.handleEvent(e));
}
});
this.wrapper.addEventListener('scroll', function (e) {
return _this2.fireEvent('scroll', e);
});
}
/**
* Draw peaks on the canvas
*
* @param {number[]|Number.<Array[]>} peaks Can also be an array of arrays
* for split channel rendering
* @param {number} length The width of the area that should be drawn
* @param {number} start The x-offset of the beginning of the area that
* should be rendered
* @param {number} end The x-offset of the end of the area that should be
* rendered
*/
}, {
key: "drawPeaks",
value: function drawPeaks(peaks, length, start, end) {
if (!this.setWidth(length)) {
this.clearWave();
}
this.params.barWidth ? this.drawBars(peaks, 0, start, end) : this.drawWave(peaks, 0, start, end);
}
/**
* Scroll to the beginning
*/
}, {
key: "resetScroll",
value: function resetScroll() {
if (this.wrapper !== null) {
this.wrapper.scrollLeft = 0;
}
}
/**
* Recenter the view-port at a certain percent of the waveform
*
* @param {number} percent Value from 0 to 1 on the waveform
*/
}, {
key: "recenter",
value: function recenter(percent) {
var position = this.wrapper.scrollWidth * percent;
this.recenterOnPosition(position, true);
}
/**
* Recenter the view-port on a position, either scroll there immediately or
* in steps of 5 pixels
*
* @param {number} position X-offset in pixels
* @param {boolean} immediate Set to true to immediately scroll somewhere
*/
}, {
key: "recenterOnPosition",
value: function recenterOnPosition(position, immediate) {
var scrollLeft = this.wrapper.scrollLeft;
var half = ~~(this.wrapper.clientWidth / 2);
var maxScroll = this.wrapper.scrollWidth - this.wrapper.clientWidth;
var target = position - half;
var offset = target - scrollLeft;
if (maxScroll == 0) {
// no need to continue if scrollbar is not there
return;
} // if the cursor is currently visible...
if (!immediate && -half <= offset && offset < half) {
// set rate at which waveform is centered
var rate = this.params.autoCenterRate; // make rate depend on width of view and length of waveform
rate /= half;
rate *= maxScroll;
offset = Math.max(-rate, Math.min(rate, offset));
target = scrollLeft + offset;
} // limit target to valid range (0 to maxScroll)
target = Math.max(0, Math.min(maxScroll, target)); // no use attempting to scroll if we're not moving
if (target != scrollLeft) {
this.wrapper.scrollLeft = target;
}
}
/**
* Get the current scroll position in pixels
*
* @return {number} Horizontal scroll position in pixels
*/
}, {
key: "getScrollX",
value: function getScrollX() {
var x = 0;
if (this.wrapper) {
var pixelRatio = this.params.pixelRatio;
x = Math.round(this.wrapper.scrollLeft * pixelRatio); // In cases of elastic scroll (safari with mouse wheel) you can
// scroll beyond the limits of the container
// Calculate and floor the scrollable extent to make sure an out
// of bounds value is not returned
// Ticket #1312
if (this.params.scrollParent) {
var maxScroll = ~~(this.wrapper.scrollWidth * pixelRatio - this.getWidth());
x = Math.min(maxScroll, Math.max(0, x));
}
}
return x;
}
/**
* Get the width of the container
*
* @return {number} The width of the container
*/
}, {
key: "getWidth",
value: function getWidth() {
return Math.round(this.container.clientWidth * this.params.pixelRatio);
}
/**
* Set the width of the container
*
* @param {number} width The new width of the container
* @return {boolean} Whether the width of the container was updated or not
*/
}, {
key: "setWidth",
value: function setWidth(width) {
if (this.width == width) {
return false;
}
this.width = width;
if (this.params.fillParent || this.params.scrollParent) {
this.style(this.wrapper, {
width: ''
});
} else {
var newWidth = ~~(this.width / this.params.pixelRatio) + 'px';
this.style(this.wrapper, {
width: newWidth
});
}
this.updateSize();
return true;
}
/**
* Set the height of the container
*
* @param {number} height The new height of the container.
* @return {boolean} Whether the height of the container was updated or not
*/
}, {
key: "setHeight",
value: function setHeight(height) {
if (height == this.height) {
return false;
}
this.height = height;
this.style(this.wrapper, {
height: ~~(this.height / this.params.pixelRatio) + 'px'
});
this.updateSize();
return true;
}
/**
* Called by wavesurfer when progress should be rendered
*
* @param {number} progress From 0 to 1
*/
}, {
key: "progress",
value: function progress(_progress) {
var minPxDelta = 1 / this.params.pixelRatio;
var pos = Math.round(_progress * this.width) * minPxDelta;
if (pos < this.lastPos || pos - this.lastPos >= minPxDelta) {
this.lastPos = pos;
if (this.params.scrollParent && this.params.autoCenter) {
var newPos = ~~(this.wrapper.scrollWidth * _progress);
this.recenterOnPosition(newPos, this.params.autoCenterImmediately);
}
this.updateProgress(pos);
}
}
/**
* This is called when wavesurfer is destroyed
*/
}, {
key: "destroy",
value: function destroy() {
this.unAll();
if (this.wrapper) {
if (this.wrapper.parentNode == this.container.domElement) {
this.container.removeChild(this.wrapper.domElement);
}
this.wrapper = null;
}
}
/* Renderer-specific methods */
/**
* Called after cursor related params have changed.
*
* @abstract
*/
}, {
key: "updateCursor",
value: function updateCursor() {}
/**
* Called when the size of the container changes so the renderer can adjust
*
* @abstract
*/
}, {
key: "updateSize",
value: function updateSize() {}
/**
* Draw a waveform with bars
*
* @abstract
* @param {number[]|Number.<Array[]>} peaks Can also be an array of arrays for split channel
* rendering
* @param {number} channelIndex The index of the current channel. Normally
* should be 0
* @param {number} start The x-offset of the beginning of the area that
* should be rendered
* @param {number} end The x-offset of the end of the area that should be
* rendered
*/
}, {
key: "drawBars",
value: function drawBars(peaks, channelIndex, start, end) {}
/**
* Draw a waveform
*
* @abstract
* @param {number[]|Number.<Array[]>} peaks Can also be an array of arrays for split channel
* rendering
* @param {number} channelIndex The index of the current channel. Normally
* should be 0
* @param {number} start The x-offset of the beginning of the area that
* should be rendered
* @param {number} end The x-offset of the end of the area that should be
* rendered
*/
}, {
key: "drawWave",
value: function drawWave(peaks, channelIndex, start, end) {}
/**
* Clear the waveform
*
* @abstract
*/
}, {
key: "clearWave",
value: function clearWave() {}
/**
* Render the new progress
*
* @abstract
* @param {number} position X-Offset of progress position in pixels
*/
}, {
key: "updateProgress",
value: function updateProgress(position) {}
}]);
return Drawer;
}(util.Observer);
exports.default = Drawer;
module.exports = exports.default;
/***/ }),
/***/ "./src/drawer.multicanvas.js":
/*!***********************************!*\
!*** ./src/drawer.multicanvas.js ***!
\***********************************/
/***/ ((module, exports, __webpack_require__) => {
"use strict";
function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = void 0;
var _drawer = _interopRequireDefault(__webpack_require__(/*! ./drawer */ "./src/drawer.js"));
var util = _interopRequireWildcard(__webpack_require__(/*! ./util */ "./src/util/index.js"));
var _drawer2 = _interopRequireDefault(__webpack_require__(/*! ./drawer.canvasentry */ "./src/drawer.canvasentry.js"));
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
/**
* MultiCanvas renderer for wavesurfer. Is currently the default and sole
* builtin renderer.
*
* A `MultiCanvas` consists of one or more `CanvasEntry` instances, depending
* on the zoom level.
*/
var MultiCanvas = /*#__PURE__*/function (_Drawer) {
_inherits(MultiCanvas, _Drawer);
var _super = _createSuper(MultiCanvas);
/**
* @param {HTMLElement} container The container node of the wavesurfer instance
* @param {WavesurferParams} params The wavesurfer initialisation options
*/
function MultiCanvas(container, params) {
var _this;
_classCallCheck(this, MultiCanvas);
_this = _super.call(this, container, params);
/**
* @type {number}
*/
_this.maxCanvasWidth = params.maxCanvasWidth;
/**
* @type {number}
*/
_this.maxCanvasElementWidth = Math.round(params.maxCanvasWidth / params.pixelRatio);
/**
* Whether or not the progress wave is rendered. If the `waveColor`
* and `progressColor` are the same color it is not.
*
* @type {boolean}
*/
_this.hasProgressCanvas = params.waveColor != params.progressColor;
/**
* @type {number}
*/
_this.halfPixel = 0.5 / params.pixelRatio;
/**
* List of `CanvasEntry` instances.
*
* @type {Array}
*/
_this.canvases = [];
/**
* @type {HTMLElement}
*/
_this.progressWave = null;
/**
* Class used to generate entries.
*
* @type {function}
*/
_this.EntryClass = _drawer2.default;
/**
* Canvas 2d context attributes.
*
* @type {object}
*/
_this.canvasContextAttributes = params.drawingContextAttributes;
/**
* Overlap added between entries to prevent vertical white stripes
* between `canvas` elements.
*
* @type {number}
*/
_this.overlap = 2 * Math.ceil(params.pixelRatio / 2);
/**
* The radius of the wave bars. Makes bars rounded
*
* @type {number}
*/
_this.barRadius = params.barRadius || 0;
/**
* Whether to render the waveform vertically. Defaults to false.
*
* @type {boolean}
*/
_this.vertical = params.vertical;
return _this;
}
/**
* Initialize the drawer
*/
_createClass(MultiCanvas, [{
key: "init",
value: function init() {
this.createWrapper();
this.createElements();
}
/**
* Create the canvas elements and style them
*
*/
}, {
key: "createElements",
value: function createElements() {
this.progressWave = util.withOrientation(this.wrapper.appendChild(document.createElement('wave')), this.params.vertical);
this.style(this.progressWave, {
position: 'absolute',
zIndex: 3,
left: 0,
top: 0,
bottom: 0,
overflow: 'hidden',
width: '0',
display: 'none',
boxSizing: 'border-box',
borderRightStyle: 'solid',
pointerEvents: 'none'
});
this.addCanvas();
this.updateCursor();
}
/**
* Update cursor style
*/
}, {
key: "updateCursor",
value: function updateCursor() {
this.style(this.progressWave, {
borderRightWidth: this.params.cursorWidth + 'px',
borderRightColor: this.params.cursorColor
});
}
/**
* Adjust to the updated size by adding or removing canvases
*/
}, {
key: "updateSize",
value: function updateSize() {
var _this2 = this;
var totalWidth = Math.round(this.width / this.params.pixelRatio);
var requiredCanvases = Math.ceil(totalWidth / (this.maxCanvasElementWidth + this.overlap)); // add required canvases
while (this.canvases.length < requiredCanvases) {
this.addCanvas();
} // remove older existing canvases, if any
while (this.canvases.length > requiredCanvases) {
this.removeCanvas();
}
var canvasWidth = this.maxCanvasWidth + this.overlap;
var lastCanvas = this.canvases.length - 1;
this.canvases.forEach(function (entry, i) {
if (i == lastCanvas) {
canvasWidth = _this2.width - _this2.maxCanvasWidth * lastCanvas;
}
_this2.updateDimensions(entry, canvasWidth, _this2.height);
entry.clearWave();
});
}
/**
* Add a canvas to the canvas list
*
*/
}, {
key: "addCanvas",
value: function addCanvas() {
var entry = new this.EntryClass();
entry.canvasContextAttributes = this.canvasContextAttributes;
entry.hasProgressCanvas = this.hasProgressCanvas;
entry.halfPixel = this.halfPixel;
var leftOffset = this.maxCanvasElementWidth * this.canvases.length; // wave
var wave = util.withOrientation(this.wrapper.appendChild(document.createElement('canvas')), this.params.vertical);
this.style(wave, {
position: 'absolute',
zIndex: 2,
left: leftOffset + 'px',
top: 0,
bottom: 0,
height: '100%',
pointerEvents: 'none'
});
entry.initWave(wave); // progress
if (this.hasProgressCanvas) {
var progress = util.withOrientation(this.progressWave.appendChild(document.createElement('canvas')), this.params.vertical);
this.style(progress, {
position: 'absolute',
left: leftOffset + 'px',
top: 0,
bottom: 0,
height: '100%'
});
entry.initProgress(progress);
}
this.canvases.push(entry);
}
/**
* Pop single canvas from the list
*
*/
}, {
key: "removeCanvas",
value: function removeCanvas() {
var lastEntry = this.canvases[this.canvases.length - 1]; // wave
lastEntry.wave.parentElement.removeChild(lastEntry.wave.domElement); // progress
if (this.hasProgressCanvas) {
lastEntry.progress.parentElement.removeChild(lastEntry.progress.domElement);
} // cleanup
if (lastEntry) {
lastEntry.destroy();
lastEntry = null;
}
this.canvases.pop();
}
/**
* Update the dimensions of a canvas element
*
* @param {CanvasEntry} entry Target entry
* @param {number} width The new width of the element
* @param {number} height The new height of the element
*/
}, {
key: "updateDimensions",
value: function updateDimensions(entry, width, height) {
var elementWidth = Math.round(width / this.params.pixelRatio);
var totalWidth = Math.round(this.width / this.params.pixelRatio); // update canvas dimensions
entry.updateDimensions(elementWidth, totalWidth, width, height); // style element
this.style(this.progressWave, {
display: 'block'
});
}
/**
* Clear the whole multi-canvas
*/
}, {
key: "clearWave",
value: function clearWave() {
var _this3 = this;
util.frame(function () {
_this3.canvases.forEach(function (entry) {
return entry.clearWave();
});
})();
}
/**
* Draw a waveform with bars
*
* @param {number[]|Number.<Array[]>} peaks Can also be an array of arrays
* for split channel rendering
* @param {number} channelIndex The index of the current channel. Normally
* should be 0. Must be an integer.
* @param {number} start The x-offset of the beginning of the area that
* should be rendered
* @param {number} end The x-offset of the end of the area that should be
* rendered
* @returns {void}
*/
}, {
key: "drawBars",
value: function drawBars(peaks, channelIndex, start, end) {
var _this4 = this;
return this.prepareDraw(peaks, channelIndex, start, end, function (_ref) {
var absmax = _ref.absmax,
hasMinVals = _ref.hasMinVals,
height = _ref.height,
offsetY = _ref.offsetY,
halfH = _ref.halfH,
peaks = _ref.peaks,
ch = _ref.channelIndex;
// if drawBars was called within ws.empty we don't pass a start and
// don't want anything to happen
if (start === undefined) {
return;
} // Skip every other value if there are negatives.
var peakIndexScale = hasMinVals ? 2 : 1;
var length = peaks.length / peakIndexScale;
var bar = _this4.params.barWidth * _this4.params.pixelRatio;
var gap = _this4.params.barGap === null ? Math.max(_this4.params.pixelRatio, ~~(bar / 2)) : Math.max(_this4.params.pixelRatio, _this4.params.barGap * _this4.params.pixelRatio);
var step = bar + gap;
var scale = length / _this4.width;
var first = start;
var last = end;
var i = first;
for (i; i < last; i += step) {
var peak = peaks[Math.floor(i * scale * peakIndexScale)] || 0;
var h = Math.round(peak / absmax * halfH);
/* in case of silences, allow the user to specify that we
* always draw *something* (normally a 1px high bar) */
if (h == 0 && _this4.params.barMinHeight) {
h = _this4.params.barMinHeight;
}
_this4.fillRect(i + _this4.halfPixel, halfH - h + offsetY, bar + _this4.halfPixel, h * 2, _this4.barRadius, ch);
}
});
}
/**
* Draw a waveform
*
* @param {number[]|Number.<Array[]>} peaks Can also be an array of arrays
* for split channel rendering
* @param {number} channelIndex The index of the current channel. Normally
* should be 0
* @param {number?} start The x-offset of the beginning of the area that
* should be rendered (If this isn't set only a flat line is rendered)
* @param {number?} end The x-offset of the end of the area that should be
* rendered
* @returns {void}
*/
}, {
key: "drawWave",
value: function drawWave(peaks, channelIndex, start, end) {
var _this5 = this;
return this.prepareDraw(peaks, channelIndex, start, end, function (_ref2) {
var absmax = _ref2.absmax,
hasMinVals = _ref2.hasMinVals,
height = _ref2.height,
offsetY = _ref2.offsetY,
halfH = _ref2.halfH,
peaks = _ref2.peaks,
channelIndex = _ref2.channelIndex;
if (!hasMinVals) {
var reflectedPeaks = [];
var len = peaks.length;
var i = 0;
for (i; i < len; i++) {
reflectedPeaks[2 * i] = peaks[i];
reflectedPeaks[2 * i + 1] = -peaks[i];
}
peaks = reflectedPeaks;
} // if drawWave was called within ws.empty we don't pass a start and
// end and simply want a flat line
if (start !== undefined) {
_this5.drawLine(peaks, absmax, halfH, offsetY, start, end, channelIndex);
} // always draw a median line
_this5.fillRect(0, halfH + offsetY - _this5.halfPixel, _this5.width, _this5.halfPixel, _this5.barRadius, channelIndex);
});
}
/**
* Tell the canvas entries to render their portion of the waveform
*
* @param {number[]} peaks Peaks data
* @param {number} absmax Maximum peak value (absolute)
* @param {number} halfH Half the height of the waveform
* @param {number} offsetY Offset to the top
* @param {number} start The x-offset of the beginning of the area that
* should be rendered
* @param {number} end The x-offset of the end of the area that
* should be rendered
* @param {channelIndex} channelIndex The channel index of the line drawn
*/
}, {
key: "drawLine",
value: function drawLine(peaks, absmax, halfH, offsetY, start, end, channelIndex) {
var _this6 = this;
var _ref3 = this.params.splitChannelsOptions.channelColors[channelIndex] || {},
waveColor = _ref3.waveColor,
progressColor = _ref3.progressColor;
this.canvases.forEach(function (entry, i) {
_this6.setFillStyles(entry, waveColor, progressColor);
_this6.applyCanvasTransforms(entry, _this6.params.vertical);
entry.drawLines(peaks, absmax, halfH, offsetY, start, end);
});
}
/**
* Draw a rectangle on the multi-canvas
*
* @param {number} x X-position of the rectangle
* @param {number} y Y-position of the rectangle
* @param {number} width Width of the rectangle
* @param {number} height Height of the rectangle
* @param {number} radius Radius of the rectangle
* @param {channelIndex} channelIndex The channel index of the bar drawn
*/
}, {
key: "fillRect",
value: function fillRect(x, y, width, height, radius, channelIndex) {
var startCanvas = Math.floor(x / this.maxCanvasWidth);
var endCanvas = Math.min(Math.ceil((x + width) / this.maxCanvasWidth) + 1, this.canvases.length);
var i = startCanvas;
for (i; i < endCanvas; i++) {
var entry = this.canvases[i];
var leftOffset = i * this.maxCanvasWidth;
var intersection = {
x1: Math.max(x, i * this.maxCanvasWidth),
y1: y,
x2: Math.min(x + width, i * this.maxCanvasWidth + entry.wave.width),
y2: y + height
};
if (intersection.x1 < intersection.x2) {
var _ref4 = this.params.splitChannelsOptions.channelColors[channelIndex] || {},
waveColor = _ref4.waveColor,
progressColor = _ref4.progressColor;
this.setFillStyles(entry, waveColor, progressColor);
this.applyCanvasTransforms(entry, this.params.vertical);
entry.fillRects(intersection.x1 - leftOffset, intersection.y1, intersection.x2 - intersection.x1, intersection.y2 - intersection.y1, radius);
}
}
}
/**
* Returns whether to hide the channel from being drawn based on params.
*
* @param {number} channelIndex The index of the current channel.
* @returns {bool} True to hide the channel, false to draw.
*/
}, {
key: "hideChannel",
value: function hideChannel(channelIndex) {
return this.params.splitChannels && this.params.splitChannelsOptions.filterChannels.includes(channelIndex);
}
/**
* Performs preparation tasks and calculations which are shared by `drawBars`
* and `drawWave`
*
* @param {number[]|Number.<Array[]>} peaks Can also be an array of arrays for
* split channel rendering
* @param {number} channelIndex The index of the current channel. Normally
* should be 0
* @param {number?} start The x-offset of the beginning of the area that
* should be rendered. If this isn't set only a flat line is rendered
* @param {number?} end The x-offset of the end of the area that should be
* rendered
* @param {function} fn The render function to call, e.g. `drawWave`
* @param {number} drawIndex The index of the current channel after filtering.
* @param {number?} normalizedMax Maximum modulation value across channels for use with relativeNormalization. Ignored when undefined
* @returns {void}
*/
}, {
key: "prepareDraw",
value: function prepareDraw(peaks, channelIndex, start, end, fn, drawIndex, normalizedMax) {
var _this7 = this;
return util.frame(function () {
// Split channels and call this function with the channelIndex set
if (peaks[0] instanceof Array) {
var channels = peaks;
if (_this7.params.splitChannels) {
var filteredChannels = channels.filter(function (c, i) {
return !_this7.hideChannel(i);
});
if (!_this7.params.splitChannelsOptions.overlay) {
_this7.setHeight(Math.max(filteredChannels.length, 1) * _this7.params.height * _this7.params.pixelRatio);
}
var overallAbsMax;
if (_this7.params.splitChannelsOptions && _this7.params.splitChannelsOptions.relativeNormalization) {
// calculate maximum peak across channels to use for normalization
overallAbsMax = util.max(channels.map(function (channelPeaks) {
return util.absMax(channelPeaks);
}));
}
return channels.forEach(function (channelPeaks, i) {
return _this7.prepareDraw(channelPeaks, i, start, end, fn, filteredChannels.indexOf(channelPeaks), overallAbsMax);
});
}
peaks = channels[0];
} // Return and do not draw channel peaks if hidden.
if (_this7.hideChannel(channelIndex)) {
return;
} // calculate maximum modulation value, either from the barHeight
// parameter or if normalize=true from the largest value in the peak
// set
var absmax = 1 / _this7.params.barHeight;
if (_this7.params.normalize) {
absmax = normalizedMax === undefined ? util.absMax(peaks) : normalizedMax;
} // Bar wave draws the bottom only as a reflection of the top,
// so we don't need negative values
var hasMinVals = [].some.call(peaks, function (val) {
return val < 0;
});
var height = _this7.params.height * _this7.params.pixelRatio;
var halfH = height / 2;
var offsetY = height * drawIndex || 0; // Override offsetY if overlay is true
if (_this7.params.splitChannelsOptions && _this7.params.splitChannelsOptions.overlay) {
offsetY = 0;
}
return fn({
absmax: absmax,
hasMinVals: hasMinVals,
height: height,
offsetY: offsetY,
halfH: halfH,
peaks: peaks,
channelIndex: channelIndex
});
})();
}
/**
* Set the fill styles for a certain entry (wave and progress)
*
* @param {CanvasEntry} entry Target entry
* @param {string} waveColor Wave color to draw this entry
* @param {string} progressColor Progress color to draw this entry
*/
}, {
key: "setFillStyles",
value: function setFillStyles(entry) {
var waveColor = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : this.params.waveColor;
var progressColor = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : this.params.progressColor;
entry.setFillStyles(waveColor, progressColor);
}
/**
* Set the canvas transforms for a certain entry (wave and progress)
*
* @param {CanvasEntry} entry Target entry
* @param {boolean} vertical Whether to render the waveform vertically
*/
}, {
key: "applyCanvasTransforms",
value: function applyCanvasTransforms(entry) {
var vertical = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
entry.applyCanvasTransforms(vertical);
}
/**
* Return image data of the multi-canvas
*
* When using a `type` of `'blob'`, this will return a `Promise`.
*
* @param {string} format='image/png' An optional value of a format type.
* @param {number} quality=0.92 An optional value between 0 and 1.
* @param {string} type='dataURL' Either 'dataURL' or 'blob'.
* @return {string|string[]|Promise} When using the default `'dataURL'`
* `type` this returns a single data URL or an array of data URLs,
* one for each canvas. When using the `'blob'` `type` this returns a
* `Promise` that resolves with an array of `Blob` instances, one for each
* canvas.
*/
}, {
key: "getImage",
value: function getImage(format, quality, type) {
if (type === 'blob') {
return Promise.all(this.canvases.map(function (entry) {
return entry.getImage(format, quality, type);
}));
} else if (type === 'dataURL') {
var images = this.canvases.map(function (entry) {
return entry.getImage(format, quality, type);
});
return images.length > 1 ? images : images[0];
}
}
/**
* Render the new progress
*
* @param {number} position X-offset of progress position in pixels
*/
}, {
key: "updateProgress",
value: function updateProgress(position) {
this.style(this.progressWave, {
width: position + 'px'
});
}
}]);
return MultiCanvas;
}(_drawer.default);
exports.default = MultiCanvas;
module.exports = exports.default;
/***/ }),
/***/ "./src/mediaelement-webaudio.js":
/*!**************************************!*\
!*** ./src/mediaelement-webaudio.js ***!
\**************************************/
/***/ ((module, exports, __webpack_require__) => {
"use strict";
function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = void 0;
var _mediaelement = _interopRequireDefault(__webpack_require__(/*! ./mediaelement */ "./src/mediaelement.js"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
function _get(target, property, receiver) { if (typeof Reflect !== "undefined" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(receiver); } return desc.value; }; } return _get(target, property, receiver || target); }
function _superPropBase(object, property) { while (!Object.prototype.hasOwnProperty.call(object, property)) { object = _getPrototypeOf(object); if (object === null) break; } return object; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
/**
* MediaElementWebAudio backend: load audio via an HTML5 audio tag, but playback with the WebAudio API.
* The advantage here is that the html5 <audio> tag can perform range requests on the server and not
* buffer the entire file in one request, and you still get the filtering and scripting functionality
* of the webaudio API.
* Note that in order to use range requests and prevent buffering, you must provide peak data.
*
* @since 3.2.0
*/
var MediaElementWebAudio = /*#__PURE__*/function (_MediaElement) {
_inherits(MediaElementWebAudio, _MediaElement);
var _super = _createSuper(MediaElementWebAudio);
/**
* Construct the backend
*
* @param {WavesurferParams} params Wavesurfer parameters
*/
function MediaElementWebAudio(params) {
var _this;
_classCallCheck(this, MediaElementWebAudio);
_this = _super.call(this, params);
/** @private */
_this.params = params;
/** @private */
_this.sourceMediaElement = null;
return _this;
}
/**
* Initialise the backend, called in `wavesurfer.createBackend()`
*/
_createClass(MediaElementWebAudio, [{
key: "init",
value: function init() {
this.setPlaybackRate(this.params.audioRate);
this.createTimer();
this.createVolumeNode();
this.createScriptNode();
this.createAnalyserNode();
}
/**
* Private method called by both `load` (from url)
* and `loadElt` (existing media element) methods.
*
* @param {HTMLMediaElement} media HTML5 Audio or Video element
* @param {number[]|Number.<Array[]>} peaks Array of peak data
* @param {string} preload HTML 5 preload attribute value
* @private
*/
}, {
key: "_load",
value: function _load(media, peaks, preload) {
_get(_getPrototypeOf(MediaElementWebAudio.prototype), "_load", this).call(this, media, peaks, preload);
this.createMediaElementSource(media);
}
/**
* Create MediaElementSource node
*
* @since 3.2.0
* @param {HTMLMediaElement} mediaElement HTML5 Audio to load
*/
}, {
key: "createMediaElementSource",
value: function createMediaElementSource(mediaElement) {
this.sourceMediaElement = this.ac.createMediaElementSource(mediaElement);
this.sourceMediaElement.connect(this.analyser);
}
}, {
key: "play",
value: function play(start, end) {
this.resumeAudioContext();
return _get(_getPrototypeOf(MediaElementWebAudio.prototype), "play", this).call(this, start, end);
}
/**
* This is called when wavesurfer is destroyed
*
*/
}, {
key: "destroy",
value: function destroy() {
_get(_getPrototypeOf(MediaElementWebAudio.prototype), "destroy", this).call(this);
this.destroyWebAudio();
}
}]);
return MediaElementWebAudio;
}(_mediaelement.default);
exports.default = MediaElementWebAudio;
module.exports = exports.default;
/***/ }),
/***/ "./src/mediaelement.js":
/*!*****************************!*\
!*** ./src/mediaelement.js ***!
\*****************************/
/***/ ((module, exports, __webpack_require__) => {
"use strict";
function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = void 0;
var _webaudio = _interopRequireDefault(__webpack_require__(/*! ./webaudio */ "./src/webaudio.js"));
var util = _interopRequireWildcard(__webpack_require__(/*! ./util */ "./src/util/index.js"));
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
function _get(target, property, receiver) { if (typeof Reflect !== "undefined" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(receiver); } return desc.value; }; } return _get(target, property, receiver || target); }
function _superPropBase(object, property) { while (!Object.prototype.hasOwnProperty.call(object, property)) { object = _getPrototypeOf(object); if (object === null) break; } return object; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
/**
* MediaElement backend
*/
var MediaElement = /*#__PURE__*/function (_WebAudio) {
_inherits(MediaElement, _WebAudio);
var _super = _createSuper(MediaElement);
/**
* Construct the backend
*
* @param {WavesurferParams} params Wavesurfer parameters
*/
function MediaElement(params) {
var _this;
_classCallCheck(this, MediaElement);
_this = _super.call(this, params);
/** @private */
_this.params = params;
/**
* Initially a dummy media element to catch errors. Once `_load` is
* called, this will contain the actual `HTMLMediaElement`.
* @private
*/
_this.media = {
currentTime: 0,
duration: 0,
paused: true,
playbackRate: 1,
play: function play() {},
pause: function pause() {},
volume: 0
};
/** @private */
_this.mediaType = params.mediaType.toLowerCase();
/** @private */
_this.elementPosition = params.elementPosition;
/** @private */
_this.peaks = null;
/** @private */
_this.playbackRate = 1;
/** @private */
_this.volume = 1;
/** @private */
_this.isMuted = false;
/** @private */
_this.buffer = null;
/** @private */
_this.onPlayEnd = null;
/** @private */
_this.mediaListeners = {};
return _this;
}
/**
* Initialise the backend, called in `wavesurfer.createBackend()`
*/
_createClass(MediaElement, [{
key: "init",
value: function init() {
this.setPlaybackRate(this.params.audioRate);
this.createTimer();
}
/**
* Attach event listeners to media element.
*/
}, {
key: "_setupMediaListeners",
value: function _setupMediaListeners() {
var _this2 = this;
this.mediaListeners.error = function () {
_this2.fireEvent('error', 'Error loading media element');
};
this.mediaListeners.canplay = function () {
_this2.fireEvent('canplay');
};
this.mediaListeners.ended = function () {
_this2.fireEvent('finish');
}; // listen to and relay play, pause and seeked events to enable
// playback control from the external media element
this.mediaListeners.play = function () {
_this2.fireEvent('play');
};
this.mediaListeners.pause = function () {
_this2.fireEvent('pause');
};
this.mediaListeners.seeked = function (event) {
_this2.fireEvent('seek');
};
this.mediaListeners.volumechange = function (event) {
_this2.isMuted = _this2.media.muted;
if (_this2.isMuted) {
_this2.volume = 0;
} else {
_this2.volume = _this2.media.volume;
}
_this2.fireEvent('volume');
}; // reset event listeners
Object.keys(this.mediaListeners).forEach(function (id) {
_this2.media.removeEventListener(id, _this2.mediaListeners[id]);
_this2.media.addEventListener(id, _this2.mediaListeners[id]);
});
}
/**
* Create a timer to provide a more precise `audioprocess` event.
*/
}, {
key: "createTimer",
value: function createTimer() {
var _this3 = this;
var onAudioProcess = function onAudioProcess() {
if (_this3.isPaused()) {
return;
}
_this3.fireEvent('audioprocess', _this3.getCurrentTime()); // Call again in the next frame
util.frame(onAudioProcess)();
};
this.on('play', onAudioProcess); // Update the progress one more time to prevent it from being stuck in
// case of lower framerates
this.on('pause', function () {
_this3.fireEvent('audioprocess', _this3.getCurrentTime());
});
}
/**
* Create media element with url as its source,
* and append to container element.
*
* @param {string} url Path to media file
* @param {HTMLElement} container HTML element
* @param {number[]|Number.<Array[]>} peaks Array of peak data
* @param {string} preload HTML 5 preload attribute value
* @throws Will throw an error if the `url` argument is not a valid media
* element.
*/
}, {
key: "load",
value: function load(url, container, peaks, preload) {
var media = document.createElement(this.mediaType);
media.controls = this.params.mediaControls;
media.autoplay = this.params.autoplay || false;
media.preload = preload == null ? 'auto' : preload;
media.src = url;
media.style.width = '100%';
var prevMedia = container.querySelector(this.mediaType);
if (prevMedia) {
container.removeChild(prevMedia);
}
container.appendChild(media);
this._load(media, peaks, preload);
}
/**
* Load existing media element.
*
* @param {HTMLMediaElement} elt HTML5 Audio or Video element
* @param {number[]|Number.<Array[]>} peaks Array of peak data
*/
}, {
key: "loadElt",
value: function loadElt(elt, peaks) {
elt.controls = this.params.mediaControls;
elt.autoplay = this.params.autoplay || false;
this._load(elt, peaks, elt.preload);
}
/**
* Method called by both `load` (from url)
* and `loadElt` (existing media element) methods.
*
* @param {HTMLMediaElement} media HTML5 Audio or Video element
* @param {number[]|Number.<Array[]>} peaks Array of peak data
* @param {string} preload HTML 5 preload attribute value
* @throws Will throw an error if the `media` argument is not a valid media
* element.
* @private
*/
}, {
key: "_load",
value: function _load(media, peaks, preload) {
// verify media element is valid
if (!(media instanceof HTMLMediaElement) || typeof media.addEventListener === 'undefined') {
throw new Error('media parameter is not a valid media element');
} // load must be called manually on iOS, otherwise peaks won't draw
// until a user interaction triggers load --> 'ready' event
//
// note that we avoid calling media.load here when given peaks and preload == 'none'
// as this almost always triggers some browser fetch of the media.
if (typeof media.load == 'function' && !(peaks && preload == 'none')) {
// Resets the media element and restarts the media resource. Any
// pending events are discarded. How much media data is fetched is
// still affected by the preload attribute.
media.load();
}
this.media = media;
this._setupMediaListeners();
this.peaks = peaks;
this.onPlayEnd = null;
this.buffer = null;
this.isMuted = media.muted;
this.setPlaybackRate(this.playbackRate);
this.setVolume(this.volume);
}
/**
* Used by `wavesurfer.isPlaying()` and `wavesurfer.playPause()`
*
* @return {boolean} Media paused or not
*/
}, {
key: "isPaused",
value: function isPaused() {
return !this.media || this.media.paused;
}
/**
* Used by `wavesurfer.getDuration()`
*
* @return {number} Duration
*/
}, {
key: "getDuration",
value: function getDuration() {
if (this.explicitDuration) {
return this.explicitDuration;
}
var duration = (this.buffer || this.media).duration;
if (duration >= Infinity) {
// streaming audio
duration = this.media.seekable.end(0);
}
return duration;
}
/**
* Returns the current time in seconds relative to the audio-clip's
* duration.
*
* @return {number} Current time
*/
}, {
key: "getCurrentTime",
value: function getCurrentTime() {
return this.media && this.media.currentTime;
}
/**
* Get the position from 0 to 1
*
* @return {number} Current position
*/
}, {
key: "getPlayedPercents",
value: function getPlayedPercents() {
return this.getCurrentTime() / this.getDuration() || 0;
}
/**
* Get the audio source playback rate.
*
* @return {number} Playback rate
*/
}, {
key: "getPlaybackRate",
value: function getPlaybackRate() {
return this.playbackRate || this.media.playbackRate;
}
/**
* Set the audio source playback rate.
*
* @param {number} value Playback rate
*/
}, {
key: "setPlaybackRate",
value: function setPlaybackRate(value) {
this.playbackRate = value || 1;
this.media.playbackRate = this.playbackRate;
}
/**
* Used by `wavesurfer.seekTo()`
*
* @param {number} start Position to start at in seconds
*/
}, {
key: "seekTo",
value: function seekTo(start) {
if (start != null) {
this.media.currentTime = start;
}
this.clearPlayEnd();
}
/**
* Plays the loaded audio region.
*
* @param {number} start Start offset in seconds, relative to the beginning
* of a clip.
* @param {number} end When to stop, relative to the beginning of a clip.
* @emits MediaElement#play
* @return {Promise} Result
*/
}, {
key: "play",
value: function play(start, end) {
this.seekTo(start);
var promise = this.media.play();
end && this.setPlayEnd(end);
return promise;
}
/**
* Pauses the loaded audio.
*
* @emits MediaElement#pause
* @return {Promise} Result
*/
}, {
key: "pause",
value: function pause() {
var promise;
if (this.media) {
promise = this.media.pause();
}
this.clearPlayEnd();
return promise;
}
/**
* Set the play end
*
* @param {number} end Where to end
*/
}, {
key: "setPlayEnd",
value: function setPlayEnd(end) {
var _this4 = this;
this.clearPlayEnd();
this._onPlayEnd = function (time) {
if (time >= end) {
_this4.pause();
_this4.seekTo(end);
}
};
this.on('audioprocess', this._onPlayEnd);
}
/** @private */
}, {
key: "clearPlayEnd",
value: function clearPlayEnd() {
if (this._onPlayEnd) {
this.un('audioprocess', this._onPlayEnd);
this._onPlayEnd = null;
}
}
/**
* Compute the max and min value of the waveform when broken into
* <length> subranges.
*
* @param {number} length How many subranges to break the waveform into.
* @param {number} first First sample in the required range.
* @param {number} last Last sample in the required range.
* @return {number[]|Number.<Array[]>} Array of 2*<length> peaks or array of
* arrays of peaks consisting of (max, min) values for each subrange.
*/
}, {
key: "getPeaks",
value: function getPeaks(length, first, last) {
if (this.buffer) {
return _get(_getPrototypeOf(MediaElement.prototype), "getPeaks", this).call(this, length, first, last);
}
return this.peaks || [];
}
/**
* Set the sink id for the media player
*
* @param {string} deviceId String value representing audio device id.
* @returns {Promise} A Promise that resolves to `undefined` when there
* are no errors.
*/
}, {
key: "setSinkId",
value: function setSinkId(deviceId) {
if (deviceId) {
if (!this.media.setSinkId) {
return Promise.reject(new Error('setSinkId is not supported in your browser'));
}
return this.media.setSinkId(deviceId);
}
return Promise.reject(new Error('Invalid deviceId: ' + deviceId));
}
/**
* Get the current volume
*
* @return {number} value A floating point value between 0 and 1.
*/
}, {
key: "getVolume",
value: function getVolume() {
return this.volume;
}
/**
* Set the audio volume
*
* @param {number} value A floating point value between 0 and 1.
*/
}, {
key: "setVolume",
value: function setVolume(value) {
this.volume = value; // no need to change when it's already at that volume
if (this.media.volume !== this.volume) {
this.media.volume = this.volume;
}
}
/**
* Enable or disable muted audio
*
* @since 4.0.0
* @param {boolean} muted Specify `true` to mute audio.
*/
}, {
key: "setMute",
value: function setMute(muted) {
// This causes a volume change to be emitted too through the
// volumechange event listener.
this.isMuted = this.media.muted = muted;
}
/**
* This is called when wavesurfer is destroyed
*
*/
}, {
key: "destroy",
value: function destroy() {
var _this5 = this;
this.pause();
this.unAll();
this.destroyed = true; // cleanup media event listeners
Object.keys(this.mediaListeners).forEach(function (id) {
if (_this5.media) {
_this5.media.removeEventListener(id, _this5.mediaListeners[id]);
}
});
if (this.params.removeMediaElementOnDestroy && this.media && this.media.parentNode) {
this.media.parentNode.removeChild(this.media);
}
this.media = null;
}
}]);
return MediaElement;
}(_webaudio.default);
exports.default = MediaElement;
module.exports = exports.default;
/***/ }),
/***/ "./src/peakcache.js":
/*!**************************!*\
!*** ./src/peakcache.js ***!
\**************************/
/***/ ((module, exports) => {
"use strict";
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = void 0;
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
/**
* Caches the decoded peaks data to improve rendering speed for large audio
*
* Is used if the option parameter `partialRender` is set to `true`
*/
var PeakCache = /*#__PURE__*/function () {
/**
* Instantiate cache
*/
function PeakCache() {
_classCallCheck(this, PeakCache);
this.clearPeakCache();
}
/**
* Empty the cache
*/
_createClass(PeakCache, [{
key: "clearPeakCache",
value: function clearPeakCache() {
/**
* Flat array with entries that are always in pairs to mark the
* beginning and end of each subrange. This is a convenience so we can
* iterate over the pairs for easy set difference operations.
* @private
*/
this.peakCacheRanges = [];
/**
* Length of the entire cachable region, used for resetting the cache
* when this changes (zoom events, for instance).
* @private
*/
this.peakCacheLength = -1;
}
/**
* Add a range of peaks to the cache
*
* @param {number} length The length of the range
* @param {number} start The x offset of the start of the range
* @param {number} end The x offset of the end of the range
* @return {Number.<Array[]>} Array with arrays of numbers
*/
}, {
key: "addRangeToPeakCache",
value: function addRangeToPeakCache(length, start, end) {
if (length != this.peakCacheLength) {
this.clearPeakCache();
this.peakCacheLength = length;
} // Return ranges that weren't in the cache before the call.
var uncachedRanges = [];
var i = 0; // Skip ranges before the current start.
while (i < this.peakCacheRanges.length && this.peakCacheRanges[i] < start) {
i++;
} // If |i| is even, |start| falls after an existing range. Otherwise,
// |start| falls between an existing range, and the uncached region
// starts when we encounter the next node in |peakCacheRanges| or
// |end|, whichever comes first.
if (i % 2 == 0) {
uncachedRanges.push(start);
}
while (i < this.peakCacheRanges.length && this.peakCacheRanges[i] <= end) {
uncachedRanges.push(this.peakCacheRanges[i]);
i++;
} // If |i| is even, |end| is after all existing ranges.
if (i % 2 == 0) {
uncachedRanges.push(end);
} // Filter out the 0-length ranges.
uncachedRanges = uncachedRanges.filter(function (item, pos, arr) {
if (pos == 0) {
return item != arr[pos + 1];
} else if (pos == arr.length - 1) {
return item != arr[pos - 1];
}
return item != arr[pos - 1] && item != arr[pos + 1];
}); // Merge the two ranges together, uncachedRanges will either contain
// wholly new points, or duplicates of points in peakCacheRanges. If
// duplicates are detected, remove both and extend the range.
this.peakCacheRanges = this.peakCacheRanges.concat(uncachedRanges);
this.peakCacheRanges = this.peakCacheRanges.sort(function (a, b) {
return a - b;
}).filter(function (item, pos, arr) {
if (pos == 0) {
return item != arr[pos + 1];
} else if (pos == arr.length - 1) {
return item != arr[pos - 1];
}
return item != arr[pos - 1] && item != arr[pos + 1];
}); // Push the uncached ranges into an array of arrays for ease of
// iteration in the functions that call this.
var uncachedRangePairs = [];
for (i = 0; i < uncachedRanges.length; i += 2) {
uncachedRangePairs.push([uncachedRanges[i], uncachedRanges[i + 1]]);
}
return uncachedRangePairs;
}
/**
* For testing
*
* @return {Number.<Array[]>} Array with arrays of numbers
*/
}, {
key: "getCacheRanges",
value: function getCacheRanges() {
var peakCacheRangePairs = [];
var i;
for (i = 0; i < this.peakCacheRanges.length; i += 2) {
peakCacheRangePairs.push([this.peakCacheRanges[i], this.peakCacheRanges[i + 1]]);
}
return peakCacheRangePairs;
}
}]);
return PeakCache;
}();
exports.default = PeakCache;
module.exports = exports.default;
/***/ }),
/***/ "./src/util/absMax.js":
/*!****************************!*\
!*** ./src/util/absMax.js ***!
\****************************/
/***/ ((module, exports, __webpack_require__) => {
"use strict";
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = absMax;
var _max = _interopRequireDefault(__webpack_require__(/*! ./max */ "./src/util/max.js"));
var _min = _interopRequireDefault(__webpack_require__(/*! ./min */ "./src/util/min.js"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Get the largest absolute value in an array
*
* @param {Array} values Array of numbers
* @returns {Number} Largest number found
* @example console.log(max([-3, 2, 1]), max([-3, 2, 4])); // logs 3 4
* @since 4.3.0
*/
function absMax(values) {
var max = (0, _max.default)(values);
var min = (0, _min.default)(values);
return -min > max ? -min : max;
}
module.exports = exports.default;
/***/ }),
/***/ "./src/util/clamp.js":
/*!***************************!*\
!*** ./src/util/clamp.js ***!
\***************************/
/***/ ((module, exports) => {
"use strict";
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = clamp;
/**
* Returns a number limited to the given range.
*
* @param {number} val The number to be limited to a range
* @param {number} min The lower boundary of the limit range
* @param {number} max The upper boundary of the limit range
* @returns {number} A number in the range [min, max]
*/
function clamp(val, min, max) {
return Math.min(Math.max(min, val), max);
}
module.exports = exports.default;
/***/ }),
/***/ "./src/util/fetch.js":
/*!***************************!*\
!*** ./src/util/fetch.js ***!
\***************************/
/***/ ((module, exports, __webpack_require__) => {
"use strict";
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = fetchFile;
var _observer = _interopRequireDefault(__webpack_require__(/*! ./observer */ "./src/util/observer.js"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
var ProgressHandler = /*#__PURE__*/function () {
/**
* Instantiate ProgressHandler
*
* @param {Observer} instance The `fetchFile` observer instance.
* @param {Number} contentLength Content length.
* @param {Response} response Response object.
*/
function ProgressHandler(instance, contentLength, response) {
_classCallCheck(this, ProgressHandler);
this.instance = instance;
this.instance._reader = response.body.getReader();
this.total = parseInt(contentLength, 10);
this.loaded = 0;
}
/**
* A method that is called once, immediately after the `ReadableStream``
* is constructed.
*
* @param {ReadableStreamDefaultController} controller Controller instance
* used to control the stream.
*/
_createClass(ProgressHandler, [{
key: "start",
value: function start(controller) {
var _this = this;
var read = function read() {
// instance._reader.read() returns a promise that resolves
// when a value has been received
_this.instance._reader.read().then(function (_ref) {
var done = _ref.done,
value = _ref.value;
// result objects contain two properties:
// done - true if the stream has already given you all its data.
// value - some data. Always undefined when done is true.
if (done) {
// ensure onProgress called when content-length=0
if (_this.total === 0) {
_this.instance.onProgress.call(_this.instance, {
loaded: _this.loaded,
total: _this.total,
lengthComputable: false
});
} // no more data needs to be consumed, close the stream
controller.close();
return;
}
_this.loaded += value.byteLength;
_this.instance.onProgress.call(_this.instance, {
loaded: _this.loaded,
total: _this.total,
lengthComputable: !(_this.total === 0)
}); // enqueue the next data chunk into our target stream
controller.enqueue(value);
read();
}).catch(function (error) {
controller.error(error);
});
};
read();
}
}]);
return ProgressHandler;
}();
/**
* Load a file using `fetch`.
*
* @param {object} options Request options to use. See example below.
* @returns {Observer} Observer instance
* @example
* // default options
* let options = {
* url: undefined,
* method: 'GET',
* mode: 'cors',
* credentials: 'same-origin',
* cache: 'default',
* responseType: 'json',
* requestHeaders: [],
* redirect: 'follow',
* referrer: 'client'
* };
*
* // override some options
* options.url = '../media/demo.wav';
* // available types: 'arraybuffer', 'blob', 'json' or 'text'
* options.responseType = 'arraybuffer';
*
* // make fetch call
* let request = util.fetchFile(options);
*
* // listen for events
* request.on('progress', e => {
* console.log('progress', e);
* });
*
* request.on('success', data => {
* console.log('success!', data);
* });
*
* request.on('error', e => {
* console.warn('fetchFile error: ', e);
* });
*/
// const { AbortController, abortableFetch } = require('abortcontroller-polyfill/dist/cjs-ponyfill')
// const AbortController = require("abort-controller")
// console.log("AbortController", AbortController)
// const {AbortController} = AbortControllerShim
function fetchFile(options) {
if (!options) {
throw new Error('fetch options missing');
} else if (!options.url) {
throw new Error('fetch url missing');
}
var instance = new _observer.default();
var fetchHeaders = new Headers();
var fetchRequest = new Request(options.url); // add ability to abort
// instance.controller = new AbortController(); // check if headers have to be added
instance.controller = new AbortControllerShim.AbortController(); // check if headers have to be added
if (options && options.requestHeaders) {
// add custom request headers
options.requestHeaders.forEach(function (header) {
fetchHeaders.append(header.key, header.value);
});
} // parse fetch options
var responseType = options.responseType || 'json';
var fetchOptions = {
method: options.method || 'GET',
headers: fetchHeaders,
mode: options.mode || 'cors',
credentials: options.credentials || 'same-origin',
cache: options.cache || 'default',
redirect: options.redirect || 'follow',
referrer: options.referrer || 'client',
signal: instance.controller.signal
};
fetch(fetchRequest, fetchOptions).then(function (response) {
// store response reference
instance.response = response;
var progressAvailable = true;
if (!response.body) {
// ReadableStream is not yet supported in this browser
// see https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream
progressAvailable = false;
} // Server must send CORS header "Access-Control-Expose-Headers: content-length"
var contentLength = response.headers.get('content-length');
if (contentLength === null) {
// Content-Length server response header missing.
// Don't evaluate download progress if we can't compare against a total size
// see https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#Access-Control-Expose-Headers
progressAvailable = false;
}
if (!progressAvailable) {
// not able to check download progress so skip it
return response;
} // fire progress event when during load
instance.onProgress = function (e) {
instance.fireEvent('progress', e);
};
return new Response(new ReadableStream(new ProgressHandler(instance, contentLength, response)), fetchOptions);
}).then(function (response) {
var errMsg;
if (response.ok) {
switch (responseType) {
case 'arraybuffer':
return response.arrayBuffer();
case 'json':
return response.json();
case 'blob':
return response.blob();
case 'text':
return response.text();
default:
errMsg = 'Unknown responseType: ' + responseType;
break;
}
}
if (!errMsg) {
errMsg = 'HTTP error status: ' + response.status;
}
throw new Error(errMsg);
}).then(function (response) {
instance.fireEvent('success', response);
}).catch(function (error) {
instance.fireEvent('error', error);
}); // return the fetch request
instance.fetchRequest = fetchRequest;
return instance;
}
module.exports = exports.default;
/***/ }),
/***/ "./src/util/frame.js":
/*!***************************!*\
!*** ./src/util/frame.js ***!
\***************************/
/***/ ((module, exports, __webpack_require__) => {
"use strict";
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = frame;
var _requestAnimationFrame = _interopRequireDefault(__webpack_require__(/*! ./request-animation-frame */ "./src/util/request-animation-frame.js"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Create a function which will be called at the next requestAnimationFrame
* cycle
*
* @param {function} func The function to call
*
* @return {func} The function wrapped within a requestAnimationFrame
*/
function frame(func) {
return function () {
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
return (0, _requestAnimationFrame.default)(function () {
return func.apply(void 0, args);
});
};
}
module.exports = exports.default;
/***/ }),
/***/ "./src/util/get-id.js":
/*!****************************!*\
!*** ./src/util/get-id.js ***!
\****************************/
/***/ ((module, exports) => {
"use strict";
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = getId;
/**
* Get a random prefixed ID
*
* @param {String} prefix Prefix to use. Default is `'wavesurfer_'`.
* @returns {String} Random prefixed ID
* @example
* console.log(getId()); // logs 'wavesurfer_b5pors4ru6g'
*
* let prefix = 'foo-';
* console.log(getId(prefix)); // logs 'foo-b5pors4ru6g'
*/
function getId(prefix) {
if (prefix === undefined) {
prefix = 'wavesurfer_';
}
return prefix + Math.random().toString(32).substring(2);
}
module.exports = exports.default;
/***/ }),
/***/ "./src/util/index.js":
/*!***************************!*\
!*** ./src/util/index.js ***!
\***************************/
/***/ ((__unused_webpack_module, exports, __webpack_require__) => {
"use strict";
Object.defineProperty(exports, "__esModule", ({
value: true
}));
Object.defineProperty(exports, "getId", ({
enumerable: true,
get: function get() {
return _getId.default;
}
}));
Object.defineProperty(exports, "max", ({
enumerable: true,
get: function get() {
return _max.default;
}
}));
Object.defineProperty(exports, "min", ({
enumerable: true,
get: function get() {
return _min.default;
}
}));
Object.defineProperty(exports, "absMax", ({
enumerable: true,
get: function get() {
return _absMax.default;
}
}));
Object.defineProperty(exports, "Observer", ({
enumerable: true,
get: function get() {
return _observer.default;
}
}));
Object.defineProperty(exports, "style", ({
enumerable: true,
get: function get() {
return _style.default;
}
}));
Object.defineProperty(exports, "requestAnimationFrame", ({
enumerable: true,
get: function get() {
return _requestAnimationFrame.default;
}
}));
Object.defineProperty(exports, "frame", ({
enumerable: true,
get: function get() {
return _frame.default;
}
}));
Object.defineProperty(exports, "debounce", ({
enumerable: true,
get: function get() {
return _debounce.default;
}
}));
Object.defineProperty(exports, "preventClick", ({
enumerable: true,
get: function get() {
return _preventClick.default;
}
}));
Object.defineProperty(exports, "fetchFile", ({
enumerable: true,
get: function get() {
return _fetch.default;
}
}));
Object.defineProperty(exports, "clamp", ({
enumerable: true,
get: function get() {
return _clamp.default;
}
}));
Object.defineProperty(exports, "withOrientation", ({
enumerable: true,
get: function get() {
return _orientation.default;
}
}));
var _getId = _interopRequireDefault(__webpack_require__(/*! ./get-id */ "./src/util/get-id.js"));
var _max = _interopRequireDefault(__webpack_require__(/*! ./max */ "./src/util/max.js"));
var _min = _interopRequireDefault(__webpack_require__(/*! ./min */ "./src/util/min.js"));
var _absMax = _interopRequireDefault(__webpack_require__(/*! ./absMax */ "./src/util/absMax.js"));
var _observer = _interopRequireDefault(__webpack_require__(/*! ./observer */ "./src/util/observer.js"));
var _style = _interopRequireDefault(__webpack_require__(/*! ./style */ "./src/util/style.js"));
var _requestAnimationFrame = _interopRequireDefault(__webpack_require__(/*! ./request-animation-frame */ "./src/util/request-animation-frame.js"));
var _frame = _interopRequireDefault(__webpack_require__(/*! ./frame */ "./src/util/frame.js"));
var _debounce = _interopRequireDefault(__webpack_require__(/*! debounce */ "./node_modules/debounce/index.js"));
var _preventClick = _interopRequireDefault(__webpack_require__(/*! ./prevent-click */ "./src/util/prevent-click.js"));
var _fetch = _interopRequireDefault(__webpack_require__(/*! ./fetch */ "./src/util/fetch.js"));
var _clamp = _interopRequireDefault(__webpack_require__(/*! ./clamp */ "./src/util/clamp.js"));
var _orientation = _interopRequireDefault(__webpack_require__(/*! ./orientation */ "./src/util/orientation.js"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/***/ }),
/***/ "./src/util/max.js":
/*!*************************!*\
!*** ./src/util/max.js ***!
\*************************/
/***/ ((module, exports) => {
"use strict";
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = max;
/**
* Get the largest value
*
* @param {Array} values Array of numbers
* @returns {Number} Largest number found
* @example console.log(max([1, 2, 3])); // logs 3
*/
function max(values) {
var largest = -Infinity;
Object.keys(values).forEach(function (i) {
if (values[i] > largest) {
largest = values[i];
}
});
return largest;
}
module.exports = exports.default;
/***/ }),
/***/ "./src/util/min.js":
/*!*************************!*\
!*** ./src/util/min.js ***!
\*************************/
/***/ ((module, exports) => {
"use strict";
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = min;
/**
* Get the smallest value
*
* @param {Array} values Array of numbers
* @returns {Number} Smallest number found
* @example console.log(min([1, 2, 3])); // logs 1
*/
function min(values) {
var smallest = Number(Infinity);
Object.keys(values).forEach(function (i) {
if (values[i] < smallest) {
smallest = values[i];
}
});
return smallest;
}
module.exports = exports.default;
/***/ }),
/***/ "./src/util/observer.js":
/*!******************************!*\
!*** ./src/util/observer.js ***!
\******************************/
/***/ ((module, exports) => {
"use strict";
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = void 0;
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
/**
* @typedef {Object} ListenerDescriptor
* @property {string} name The name of the event
* @property {function} callback The callback
* @property {function} un The function to call to remove the listener
*/
/**
* Observer class
*/
var Observer = /*#__PURE__*/function () {
/**
* Instantiate Observer
*/
function Observer() {
_classCallCheck(this, Observer);
/**
* @private
* @todo Initialise the handlers here already and remove the conditional
* assignment in `on()`
*/
this._disabledEventEmissions = [];
this.handlers = null;
}
/**
* Attach a handler function for an event.
*
* @param {string} event Name of the event to listen to
* @param {function} fn The callback to trigger when the event is fired
* @return {ListenerDescriptor} The event descriptor
*/
_createClass(Observer, [{
key: "on",
value: function on(event, fn) {
var _this = this;
if (!this.handlers) {
this.handlers = {};
}
var handlers = this.handlers[event];
if (!handlers) {
handlers = this.handlers[event] = [];
}
handlers.push(fn); // Return an event descriptor
return {
name: event,
callback: fn,
un: function un(e, fn) {
return _this.un(e, fn);
}
};
}
/**
* Remove an event handler.
*
* @param {string} event Name of the event the listener that should be
* removed listens to
* @param {function} fn The callback that should be removed
*/
}, {
key: "un",
value: function un(event, fn) {
if (!this.handlers) {
return;
}
var handlers = this.handlers[event];
var i;
if (handlers) {
if (fn) {
for (i = handlers.length - 1; i >= 0; i--) {
if (handlers[i] == fn) {
handlers.splice(i, 1);
}
}
} else {
handlers.length = 0;
}
}
}
/**
* Remove all event handlers.
*/
}, {
key: "unAll",
value: function unAll() {
this.handlers = null;
}
/**
* Attach a handler to an event. The handler is executed at most once per
* event type.
*
* @param {string} event The event to listen to
* @param {function} handler The callback that is only to be called once
* @return {ListenerDescriptor} The event descriptor
*/
}, {
key: "once",
value: function once(event, handler) {
var _this2 = this;
var fn = function fn() {
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
/* eslint-disable no-invalid-this */
handler.apply(_this2, args);
/* eslint-enable no-invalid-this */
setTimeout(function () {
_this2.un(event, fn);
}, 0);
};
return this.on(event, fn);
}
/**
* Disable firing a list of events by name. When specified, event handlers for any event type
* passed in here will not be called.
*
* @since 4.0.0
* @param {string[]} eventNames an array of event names to disable emissions for
* @example
* // disable seek and interaction events
* wavesurfer.setDisabledEventEmissions(['seek', 'interaction']);
*/
}, {
key: "setDisabledEventEmissions",
value: function setDisabledEventEmissions(eventNames) {
this._disabledEventEmissions = eventNames;
}
/**
* plugins borrow part of this class without calling the constructor,
* so we have to be careful about _disabledEventEmissions
*/
}, {
key: "_isDisabledEventEmission",
value: function _isDisabledEventEmission(event) {
return this._disabledEventEmissions && this._disabledEventEmissions.includes(event);
}
/**
* Manually fire an event
*
* @param {string} event The event to fire manually
* @param {...any} args The arguments with which to call the listeners
*/
}, {
key: "fireEvent",
value: function fireEvent(event) {
for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
args[_key2 - 1] = arguments[_key2];
}
if (!this.handlers || this._isDisabledEventEmission(event)) {
return;
}
var handlers = this.handlers[event];
handlers && handlers.forEach(function (fn) {
fn.apply(void 0, args);
});
}
}]);
return Observer;
}();
exports.default = Observer;
module.exports = exports.default;
/***/ }),
/***/ "./src/util/orientation.js":
/*!*********************************!*\
!*** ./src/util/orientation.js ***!
\*********************************/
/***/ ((module, exports) => {
"use strict";
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = withOrientation;
var verticalPropMap = {
width: 'height',
height: 'width',
overflowX: 'overflowY',
overflowY: 'overflowX',
clientWidth: 'clientHeight',
clientHeight: 'clientWidth',
clientX: 'clientY',
clientY: 'clientX',
scrollWidth: 'scrollHeight',
scrollLeft: 'scrollTop',
offsetLeft: 'offsetTop',
offsetTop: 'offsetLeft',
offsetHeight: 'offsetWidth',
offsetWidth: 'offsetHeight',
left: 'top',
right: 'bottom',
top: 'left',
bottom: 'right',
borderRightStyle: 'borderBottomStyle',
borderRightWidth: 'borderBottomWidth',
borderRightColor: 'borderBottomColor'
};
/**
* Convert a horizontally-oriented property name to a vertical one.
*
* @param {string} prop A property name
* @param {bool} vertical Whether the element is oriented vertically
* @returns {string} prop, converted appropriately
*/
function mapProp(prop, vertical) {
if (Object.prototype.hasOwnProperty.call(verticalPropMap, prop)) {
return vertical ? verticalPropMap[prop] : prop;
} else {
return prop;
}
}
var isProxy = Symbol("isProxy");
/**
* Returns an appropriately oriented object based on vertical.
* If vertical is true, attribute getting and setting will be mapped through
* verticalPropMap, so that e.g. getting the object's .width will give its
* .height instead.
* Certain methods of an oriented object will return oriented objects as well.
* Oriented objects can't be added to the DOM directly since they are Proxy objects
* and thus fail typechecks. Use domElement to get the actual element for this.
*
* @param {object} target The object to be wrapped and oriented
* @param {bool} vertical Whether the element is oriented vertically
* @returns {Proxy} An oriented object with attr translation via verticalAttrMap
* @since 5.0.0
*/
function withOrientation(target, vertical) {
if (target[isProxy]) {
return target;
} else {
return new Proxy(target, {
get: function get(obj, prop, receiver) {
if (prop === isProxy) {
return true;
} else if (prop === 'domElement') {
return obj;
} else if (prop === 'style') {
return withOrientation(obj.style, vertical);
} else if (prop === 'canvas') {
return withOrientation(obj.canvas, vertical);
} else if (prop === 'getBoundingClientRect') {
return function () {
return withOrientation(obj.getBoundingClientRect.apply(obj, arguments), vertical);
};
} else if (prop === 'getContext') {
return function () {
return withOrientation(obj.getContext.apply(obj, arguments), vertical);
};
} else {
var value = obj[mapProp(prop, vertical)];
return typeof value == 'function' ? value.bind(obj) : value;
}
},
set: function set(obj, prop, value) {
obj[mapProp(prop, vertical)] = value;
return true;
}
});
}
}
module.exports = exports.default;
/***/ }),
/***/ "./src/util/prevent-click.js":
/*!***********************************!*\
!*** ./src/util/prevent-click.js ***!
\***********************************/
/***/ ((module, exports) => {
"use strict";
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = preventClick;
/**
* Stops propagation of click event and removes event listener
*
* @private
* @param {object} event The click event
*/
function preventClickHandler(event) {
event.stopPropagation();
document.body.removeEventListener('click', preventClickHandler, true);
}
/**
* Starts listening for click event and prevent propagation
*
* @param {object} values Values
*/
function preventClick(values) {
document.body.addEventListener('click', preventClickHandler, true);
}
module.exports = exports.default;
/***/ }),
/***/ "./src/util/request-animation-frame.js":
/*!*********************************************!*\
!*** ./src/util/request-animation-frame.js ***!
\*********************************************/
/***/ ((module, exports) => {
"use strict";
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = void 0;
/* eslint-disable valid-jsdoc */
/**
* Returns the `requestAnimationFrame` function for the browser, or a shim with
* `setTimeout` if the function is not found
*
* @return {function} Available `requestAnimationFrame` function for the browser
*/
var _default = (window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame || function (callback, element) {
return setTimeout(callback, 1000 / 60);
}).bind(window);
exports.default = _default;
module.exports = exports.default;
/***/ }),
/***/ "./src/util/style.js":
/*!***************************!*\
!*** ./src/util/style.js ***!
\***************************/
/***/ ((module, exports) => {
"use strict";
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = style;
/**
* Apply a map of styles to an element
*
* @param {HTMLElement} el The element that the styles will be applied to
* @param {Object} styles The map of propName: attribute, both are used as-is
*
* @return {HTMLElement} el
*/
function style(el, styles) {
Object.keys(styles).forEach(function (prop) {
if (el.style[prop] !== styles[prop]) {
el.style[prop] = styles[prop];
}
});
return el;
}
module.exports = exports.default;
/***/ }),
/***/ "./src/wavesurfer.js":
/*!***************************!*\
!*** ./src/wavesurfer.js ***!
\***************************/
/***/ ((module, exports, __webpack_require__) => {
"use strict";
function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = void 0;
var util = _interopRequireWildcard(__webpack_require__(/*! ./util */ "./src/util/index.js"));
var _drawer = _interopRequireDefault(__webpack_require__(/*! ./drawer.multicanvas */ "./src/drawer.multicanvas.js"));
var _webaudio = _interopRequireDefault(__webpack_require__(/*! ./webaudio */ "./src/webaudio.js"));
var _mediaelement = _interopRequireDefault(__webpack_require__(/*! ./mediaelement */ "./src/mediaelement.js"));
var _peakcache = _interopRequireDefault(__webpack_require__(/*! ./peakcache */ "./src/peakcache.js"));
var _mediaelementWebaudio = _interopRequireDefault(__webpack_require__(/*! ./mediaelement-webaudio */ "./src/mediaelement-webaudio.js"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
/*
* This work is licensed under a BSD-3-Clause License.
*/
/** @external {HTMLElement} https://developer.mozilla.org/en/docs/Web/API/HTMLElement */
/** @external {OfflineAudioContext} https://developer.mozilla.org/en-US/docs/Web/API/OfflineAudioContext */
/** @external {File} https://developer.mozilla.org/en-US/docs/Web/API/File */
/** @external {Blob} https://developer.mozilla.org/en-US/docs/Web/API/Blob */
/** @external {CanvasRenderingContext2D} https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D */
/** @external {MediaStreamConstraints} https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamConstraints */
/** @external {AudioNode} https://developer.mozilla.org/de/docs/Web/API/AudioNode */
/**
* @typedef {Object} WavesurferParams
* @property {AudioContext} audioContext=null Use your own previously
* initialized AudioContext or leave blank.
* @property {number} audioRate=1 Speed at which to play audio. Lower number is
* slower.
* @property {ScriptProcessorNode} audioScriptProcessor=null Use your own previously
* initialized ScriptProcessorNode or leave blank.
* @property {boolean} autoCenter=true If a scrollbar is present, center the
* waveform on current progress
* @property {number} autoCenterRate=5 If autoCenter is active, rate at which the
* waveform is centered
* @property {boolean} autoCenterImmediately=false If autoCenter is active, immediately
* center waveform on current progress
* @property {string} backend='WebAudio' `'WebAudio'|'MediaElement'|'MediaElementWebAudio'` In most cases
* you don't have to set this manually. MediaElement is a fallback for unsupported browsers.
* MediaElementWebAudio allows to use WebAudio API also with big audio files, loading audio like with
* MediaElement backend (HTML5 audio tag). You have to use the same methods of MediaElement backend for loading and
* playback, giving also peaks, so the audio data are not decoded. In this way you can use WebAudio features, like filters,
* also with audio with big duration. For example:
* ` wavesurfer.load(url | HTMLMediaElement, peaks, preload, duration);
* wavesurfer.play();
* wavesurfer.setFilter(customFilter);
* `
* @property {string} backgroundColor=null Change background color of the
* waveform container.
* @property {number} barHeight=1 The height of the wave bars.
* @property {number} barRadius=0 The radius of the wave bars. Makes bars rounded
* @property {number} barGap=null The optional spacing between bars of the wave,
* if not provided will be calculated in legacy format.
* @property {number} barWidth=null Draw the waveform using bars.
* @property {number} barMinHeight=null If specified, draw at least a bar of this height,
* eliminating waveform gaps
* @property {boolean} closeAudioContext=false Close and nullify all audio
* contexts when the destroy method is called.
* @property {!string|HTMLElement} container CSS selector or HTML element where
* the waveform should be drawn. This is the only required parameter.
* @property {string} cursorColor='#333' The fill color of the cursor indicating
* the playhead position.
* @property {number} cursorWidth=1 Measured in pixels.
* @property {object} drawingContextAttributes={desynchronized: false} Drawing context
* attributes.
* @property {number} duration=null Optional audio length so pre-rendered peaks
* can be display immediately for example.
* @property {boolean} fillParent=true Whether to fill the entire container or
* draw only according to `minPxPerSec`.
* @property {boolean} forceDecode=false Force decoding of audio using web audio
* when zooming to get a more detailed waveform.
* @property {number} height=128 The height of the waveform. Measured in
* pixels.
* @property {boolean} hideScrollbar=false Whether to hide the horizontal
* scrollbar when one would normally be shown.
* @property {boolean} interact=true Whether the mouse interaction will be
* enabled at initialization. You can switch this parameter at any time later
* on.
* @property {boolean} loopSelection=true (Use with regions plugin) Enable
* looping of selected regions
* @property {number} maxCanvasWidth=4000 Maximum width of a single canvas in
* pixels, excluding a small overlap (2 * `pixelRatio`, rounded up to the next
* even integer). If the waveform is longer than this value, additional canvases
* will be used to render the waveform, which is useful for very large waveforms
* that may be too wide for browsers to draw on a single canvas.
* @property {boolean} mediaControls=false (Use with backend `MediaElement` or `MediaElementWebAudio`)
* this enables the native controls for the media element
* @property {string} mediaType='audio' (Use with backend `MediaElement` or `MediaElementWebAudio`)
* `'audio'|'video'` ('video' only for `MediaElement`)
* @property {number} minPxPerSec=20 Minimum number of pixels per second of
* audio.
* @property {boolean} normalize=false If true, normalize by the maximum peak
* instead of 1.0.
* @property {boolean} partialRender=false Use the PeakCache to improve
* rendering speed of large waveforms
* @property {number} pixelRatio=window.devicePixelRatio The pixel ratio used to
* calculate display
* @property {PluginDefinition[]} plugins=[] An array of plugin definitions to
* register during instantiation, they will be directly initialised unless they
* are added with the `deferInit` property set to true.
* @property {string} progressColor='#555' The fill color of the part of the
* waveform behind the cursor. When `progressColor` and `waveColor` are the same
* the progress wave is not rendered at all.
* @property {boolean} removeMediaElementOnDestroy=true Set to false to keep the
* media element in the DOM when the player is destroyed. This is useful when
* reusing an existing media element via the `loadMediaElement` method.
* @property {Object} renderer=MultiCanvas Can be used to inject a custom
* renderer.
* @property {boolean|number} responsive=false If set to `true` resize the
* waveform, when the window is resized. This is debounced with a `100ms`
* timeout by default. If this parameter is a number it represents that timeout.
* @property {boolean} rtl=false If set to `true`, renders waveform from
* right-to-left.
* @property {boolean} scrollParent=false Whether to scroll the container with a
* lengthy waveform. Otherwise the waveform is shrunk to the container width
* (see fillParent).
* @property {number} skipLength=2 Number of seconds to skip with the
* skipForward() and skipBackward() methods.
* @property {boolean} splitChannels=false Render with separate waveforms for
* the channels of the audio
* @property {SplitChannelOptions} splitChannelsOptions={} Options for splitChannel rendering
* @property {boolean} vertical=false Render the waveform vertically instead of horizontally.
* @property {string} waveColor='#999' The fill color of the waveform after the
* cursor.
* @property {object} xhr={} XHR options. For example:
* `let xhr = {
* cache: 'default',
* mode: 'cors',
* method: 'GET',
* credentials: 'same-origin',
* redirect: 'follow',
* referrer: 'client',
* requestHeaders: [
* {
* key: 'Authorization',
* value: 'my-token'
* }
* ]
* };`
*/
/**
* @typedef {Object} PluginDefinition
* @desc The Object used to describe a plugin
* @example wavesurfer.addPlugin(pluginDefinition);
* @property {string} name The name of the plugin, the plugin instance will be
* added as a property to the wavesurfer instance under this name
* @property {?Object} staticProps The properties that should be added to the
* wavesurfer instance as static properties
* @property {?boolean} deferInit Don't initialise plugin
* automatically
* @property {Object} params={} The plugin parameters, they are the first parameter
* passed to the plugin class constructor function
* @property {PluginClass} instance The plugin instance factory, is called with
* the dependency specified in extends. Returns the plugin class.
*/
/**
* @typedef {Object} SplitChannelOptions
* @desc parameters applied when splitChannels option is true
* @property {boolean} overlay=false determines whether channels are rendered on top of each other or on separate tracks
* @property {object} channelColors={} object describing color for each channel. Example:
* {
* 0: {
* progressColor: 'green',
* waveColor: 'pink'
* },
* 1: {
* progressColor: 'orange',
* waveColor: 'purple'
* }
* }
* @property {number[]} filterChannels=[] indexes of channels to be hidden from rendering
* @property {boolean} relativeNormalization=false determines whether
* normalization is done per channel or maintains proportionality between
* channels. Only applied when normalize and splitChannels are both true.
* @since 4.3.0
*/
/**
* @interface PluginClass
*
* @desc This is the interface which is implemented by all plugin classes. Note
* that this only turns into an observer after being passed through
* `wavesurfer.addPlugin`.
*
* @extends {Observer}
*/
var PluginClass = /*#__PURE__*/function () {
/**
* Construct the plugin
*
* @param {Object} params={} The plugin params (specific to the plugin)
* @param {Object} ws The wavesurfer instance
*/
function PluginClass(params, ws) {
_classCallCheck(this, PluginClass);
}
/**
* Initialise the plugin
*
* Start doing something. This is called by
* `wavesurfer.initPlugin(pluginName)`
*/
_createClass(PluginClass, [{
key: "create",
value:
/**
* Plugin definition factory
*
* This function must be used to create a plugin definition which can be
* used by wavesurfer to correctly instantiate the plugin.
*
* It returns a `PluginDefinition` object representing the plugin.
*
* @param {Object} params={} The plugin params (specific to the plugin)
*/
function create(params) {}
}, {
key: "init",
value: function init() {}
/**
* Destroy the plugin instance
*
* Stop doing something. This is called by
* `wavesurfer.destroyPlugin(pluginName)`
*/
}, {
key: "destroy",
value: function destroy() {}
}]);
return PluginClass;
}();
/**
* WaveSurfer core library class
*
* @extends {Observer}
* @example
* const params = {
* container: '#waveform',
* waveColor: 'violet',
* progressColor: 'purple'
* };
*
* // initialise like this
* const wavesurfer = WaveSurfer.create(params);
*
* // or like this ...
* const wavesurfer = new WaveSurfer(params);
* wavesurfer.init();
*
* // load audio file
* wavesurfer.load('example/media/demo.wav');
*/
var WaveSurfer = /*#__PURE__*/function (_util$Observer) {
_inherits(WaveSurfer, _util$Observer);
var _super = _createSuper(WaveSurfer);
/**
* Initialise wavesurfer instance
*
* @param {WavesurferParams} params Instantiation options for wavesurfer
* @example
* const wavesurfer = new WaveSurfer(params);
* @returns {this} Wavesurfer instance
*/
function WaveSurfer(params) {
var _this;
_classCallCheck(this, WaveSurfer);
_this = _super.call(this);
/**
* Extract relevant parameters (or defaults)
* @private
*/
_this.defaultParams = {
audioContext: null,
audioScriptProcessor: null,
audioRate: 1,
autoCenter: true,
autoCenterRate: 5,
autoCenterImmediately: false,
backend: 'WebAudio',
backgroundColor: null,
barHeight: 1,
barRadius: 0,
barGap: null,
barMinHeight: null,
container: null,
cursorColor: '#333',
cursorWidth: 1,
dragSelection: true,
drawingContextAttributes: {
// Boolean that hints the user agent to reduce the latency
// by desynchronizing the canvas paint cycle from the event
// loop
desynchronized: false
},
duration: null,
fillParent: true,
forceDecode: false,
height: 128,
hideScrollbar: false,
interact: true,
loopSelection: true,
maxCanvasWidth: 4000,
mediaContainer: null,
mediaControls: false,
mediaType: 'audio',
minPxPerSec: 20,
normalize: false,
partialRender: false,
pixelRatio: window.devicePixelRatio || screen.deviceXDPI / screen.logicalXDPI,
plugins: [],
progressColor: '#555',
removeMediaElementOnDestroy: true,
renderer: _drawer.default,
responsive: false,
rtl: false,
scrollParent: false,
skipLength: 2,
splitChannels: false,
splitChannelsOptions: {
overlay: false,
channelColors: {},
filterChannels: [],
relativeNormalization: false
},
vertical: false,
waveColor: '#999',
xhr: {}
};
_this.backends = {
MediaElement: _mediaelement.default,
WebAudio: _webaudio.default,
MediaElementWebAudio: _mediaelementWebaudio.default
};
_this.util = util;
_this.params = Object.assign({}, _this.defaultParams, params);
_this.params.splitChannelsOptions = Object.assign({}, _this.defaultParams.splitChannelsOptions, params.splitChannelsOptions);
/** @private */
_this.container = 'string' == typeof params.container ? document.querySelector(_this.params.container) : _this.params.container;
if (!_this.container) {
throw new Error('Container element not found');
}
if (_this.params.mediaContainer == null) {
/** @private */
_this.mediaContainer = _this.container;
} else if (typeof _this.params.mediaContainer == 'string') {
/** @private */
_this.mediaContainer = document.querySelector(_this.params.mediaContainer);
} else {
/** @private */
_this.mediaContainer = _this.params.mediaContainer;
}
if (!_this.mediaContainer) {
throw new Error('Media Container element not found');
}
if (_this.params.maxCanvasWidth <= 1) {
throw new Error('maxCanvasWidth must be greater than 1');
} else if (_this.params.maxCanvasWidth % 2 == 1) {
throw new Error('maxCanvasWidth must be an even number');
}
if (_this.params.rtl === true) {
if (_this.params.vertical === true) {
util.style(_this.container, {
transform: 'rotateX(180deg)'
});
} else {
util.style(_this.container, {
transform: 'rotateY(180deg)'
});
}
}
if (_this.params.backgroundColor) {
_this.setBackgroundColor(_this.params.backgroundColor);
}
/**
* @private Used to save the current volume when muting so we can
* restore once unmuted
* @type {number}
*/
_this.savedVolume = 0;
/**
* @private The current muted state
* @type {boolean}
*/
_this.isMuted = false;
/**
* @private Will hold a list of event descriptors that need to be
* canceled on subsequent loads of audio
* @type {Object[]}
*/
_this.tmpEvents = [];
/**
* @private Holds any running audio downloads
* @type {Observer}
*/
_this.currentRequest = null;
/** @private */
_this.arraybuffer = null;
/** @private */
_this.drawer = null;
/** @private */
_this.backend = null;
/** @private */
_this.peakCache = null; // cache constructor objects
if (typeof _this.params.renderer !== 'function') {
throw new Error('Renderer parameter is invalid');
}
/**
* @private The uninitialised Drawer class
*/
_this.Drawer = _this.params.renderer;
/**
* @private The uninitialised Backend class
*/
// Back compat
if (_this.params.backend == 'AudioElement') {
_this.params.backend = 'MediaElement';
}
if ((_this.params.backend == 'WebAudio' || _this.params.backend === 'MediaElementWebAudio') && !_webaudio.default.prototype.supportsWebAudio.call(null)) {
_this.params.backend = 'MediaElement';
}
_this.Backend = _this.backends[_this.params.backend];
/**
* @private map of plugin names that are currently initialised
*/
_this.initialisedPluginList = {};
/** @private */
_this.isDestroyed = false;
/**
* Get the current ready status.
*
* @example const isReady = wavesurfer.isReady;
* @return {boolean}
*/
_this.isReady = false; // responsive debounced event listener. If this.params.responsive is not
// set, this is never called. Use 100ms or this.params.responsive as
// timeout for the debounce function.
var prevWidth = 0;
_this._onResize = util.debounce(function () {
if (prevWidth != _this.drawer.wrapper.clientWidth && !_this.params.scrollParent) {
prevWidth = _this.drawer.wrapper.clientWidth;
_this.drawer.fireEvent('redraw');
}
}, typeof _this.params.responsive === 'number' ? _this.params.responsive : 100);
return _possibleConstructorReturn(_this, _assertThisInitialized(_this));
}
/**
* Initialise the wave
*
* @example
* var wavesurfer = new WaveSurfer(params);
* wavesurfer.init();
* @return {this} The wavesurfer instance
*/
_createClass(WaveSurfer, [{
key: "init",
value: function init() {
this.registerPlugins(this.params.plugins);
this.createDrawer();
this.createBackend();
this.createPeakCache();
return this;
}
/**
* Add and initialise array of plugins (if `plugin.deferInit` is falsey),
* this function is called in the init function of wavesurfer
*
* @param {PluginDefinition[]} plugins An array of plugin definitions
* @emits {WaveSurfer#plugins-registered} Called with the array of plugin definitions
* @return {this} The wavesurfer instance
*/
}, {
key: "registerPlugins",
value: function registerPlugins(plugins) {
var _this2 = this;
// first instantiate all the plugins
plugins.forEach(function (plugin) {
return _this2.addPlugin(plugin);
}); // now run the init functions
plugins.forEach(function (plugin) {
// call init function of the plugin if deferInit is falsey
// in that case you would manually use initPlugins()
if (!plugin.deferInit) {
_this2.initPlugin(plugin.name);
}
});
this.fireEvent('plugins-registered', plugins);
return this;
}
/**
* Get a map of plugin names that are currently initialised
*
* @example wavesurfer.getPlugins();
* @return {Object} Object with plugin names
*/
}, {
key: "getActivePlugins",
value: function getActivePlugins() {
return this.initialisedPluginList;
}
/**
* Add a plugin object to wavesurfer
*
* @param {PluginDefinition} plugin A plugin definition
* @emits {WaveSurfer#plugin-added} Called with the name of the plugin that was added
* @example wavesurfer.addPlugin(WaveSurfer.minimap());
* @return {this} The wavesurfer instance
*/
}, {
key: "addPlugin",
value: function addPlugin(plugin) {
var _this3 = this;
if (!plugin.name) {
throw new Error('Plugin does not have a name!');
}
if (!plugin.instance) {
throw new Error("Plugin ".concat(plugin.name, " does not have an instance property!"));
} // staticProps properties are applied to wavesurfer instance
if (plugin.staticProps) {
Object.keys(plugin.staticProps).forEach(function (pluginStaticProp) {
/**
* Properties defined in a plugin definition's `staticProps` property are added as
* staticProps properties of the WaveSurfer instance
*/
_this3[pluginStaticProp] = plugin.staticProps[pluginStaticProp];
});
}
var Instance = plugin.instance; // turn the plugin instance into an observer
var observerPrototypeKeys = Object.getOwnPropertyNames(util.Observer.prototype);
observerPrototypeKeys.forEach(function (key) {
Instance.prototype[key] = util.Observer.prototype[key];
});
/**
* Instantiated plugin classes are added as a property of the wavesurfer
* instance
* @type {Object}
*/
this[plugin.name] = new Instance(plugin.params || {}, this);
this.fireEvent('plugin-added', plugin.name);
return this;
}
/**
* Initialise a plugin
*
* @param {string} name A plugin name
* @emits WaveSurfer#plugin-initialised
* @example wavesurfer.initPlugin('minimap');
* @return {this} The wavesurfer instance
*/
}, {
key: "initPlugin",
value: function initPlugin(name) {
if (!this[name]) {
throw new Error("Plugin ".concat(name, " has not been added yet!"));
}
if (this.initialisedPluginList[name]) {
// destroy any already initialised plugins
this.destroyPlugin(name);
}
this[name].init();
this.initialisedPluginList[name] = true;
this.fireEvent('plugin-initialised', name);
return this;
}
/**
* Destroy a plugin
*
* @param {string} name A plugin name
* @emits WaveSurfer#plugin-destroyed
* @example wavesurfer.destroyPlugin('minimap');
* @returns {this} The wavesurfer instance
*/
}, {
key: "destroyPlugin",
value: function destroyPlugin(name) {
if (!this[name]) {
throw new Error("Plugin ".concat(name, " has not been added yet and cannot be destroyed!"));
}
if (!this.initialisedPluginList[name]) {
throw new Error("Plugin ".concat(name, " is not active and cannot be destroyed!"));
}
if (typeof this[name].destroy !== 'function') {
throw new Error("Plugin ".concat(name, " does not have a destroy function!"));
}
this[name].destroy();
delete this.initialisedPluginList[name];
this.fireEvent('plugin-destroyed', name);
return this;
}
/**
* Destroy all initialised plugins. Convenience function to use when
* wavesurfer is removed
*
* @private
*/
}, {
key: "destroyAllPlugins",
value: function destroyAllPlugins() {
var _this4 = this;
Object.keys(this.initialisedPluginList).forEach(function (name) {
return _this4.destroyPlugin(name);
});
}
/**
* Create the drawer and draw the waveform
*
* @private
* @emits WaveSurfer#drawer-created
*/
}, {
key: "createDrawer",
value: function createDrawer() {
var _this5 = this;
this.drawer = new this.Drawer(this.container, this.params);
this.drawer.init();
this.fireEvent('drawer-created', this.drawer);
if (this.params.responsive !== false) {
window.addEventListener('resize', this._onResize, true);
window.addEventListener('orientationchange', this._onResize, true);
}
this.drawer.on('redraw', function () {
_this5.drawBuffer();
_this5.drawer.progress(_this5.backend.getPlayedPercents());
}); // Click-to-seek
this.drawer.on('click', function (e, progress) {
setTimeout(function () {
return _this5.seekTo(progress);
}, 0);
}); // Relay the scroll event from the drawer
this.drawer.on('scroll', function (e) {
if (_this5.params.partialRender) {
_this5.drawBuffer();
}
_this5.fireEvent('scroll', e);
});
}
/**
* Create the backend
*
* @private
* @emits WaveSurfer#backend-created
*/
}, {
key: "createBackend",
value: function createBackend() {
var _this6 = this;
if (this.backend) {
this.backend.destroy();
}
this.backend = new this.Backend(this.params);
this.backend.init();
this.fireEvent('backend-created', this.backend);
this.backend.on('finish', function () {
_this6.drawer.progress(_this6.backend.getPlayedPercents());
_this6.fireEvent('finish');
});
this.backend.on('play', function () {
return _this6.fireEvent('play');
});
this.backend.on('pause', function () {
return _this6.fireEvent('pause');
});
this.backend.on('audioprocess', function (time) {
_this6.drawer.progress(_this6.backend.getPlayedPercents());
_this6.fireEvent('audioprocess', time);
}); // only needed for MediaElement and MediaElementWebAudio backend
if (this.params.backend === 'MediaElement' || this.params.backend === 'MediaElementWebAudio') {
this.backend.on('seek', function () {
_this6.drawer.progress(_this6.backend.getPlayedPercents());
});
this.backend.on('volume', function () {
var newVolume = _this6.getVolume();
_this6.fireEvent('volume', newVolume);
if (_this6.backend.isMuted !== _this6.isMuted) {
_this6.isMuted = _this6.backend.isMuted;
_this6.fireEvent('mute', _this6.isMuted);
}
});
}
}
/**
* Create the peak cache
*
* @private
*/
}, {
key: "createPeakCache",
value: function createPeakCache() {
if (this.params.partialRender) {
this.peakCache = new _peakcache.default();
}
}
/**
* Get the duration of the audio clip
*
* @example const duration = wavesurfer.getDuration();
* @return {number} Duration in seconds
*/
}, {
key: "getDuration",
value: function getDuration() {
return this.backend.getDuration();
}
/**
* Get the current playback position
*
* @example const currentTime = wavesurfer.getCurrentTime();
* @return {number} Playback position in seconds
*/
}, {
key: "getCurrentTime",
value: function getCurrentTime() {
return this.backend.getCurrentTime();
}
/**
* Set the current play time in seconds.
*
* @param {number} seconds A positive number in seconds. E.g. 10 means 10
* seconds, 60 means 1 minute
*/
}, {
key: "setCurrentTime",
value: function setCurrentTime(seconds) {
if (seconds >= this.getDuration()) {
this.seekTo(1);
} else {
this.seekTo(seconds / this.getDuration());
}
}
/**
* Starts playback from the current position. Optional start and end
* measured in seconds can be used to set the range of audio to play.
*
* @param {?number} start Position to start at
* @param {?number} end Position to end at
* @emits WaveSurfer#interaction
* @return {Promise} Result of the backend play method
* @example
* // play from second 1 to 5
* wavesurfer.play(1, 5);
*/
}, {
key: "play",
value: function play(start, end) {
var _this7 = this;
this.fireEvent('interaction', function () {
return _this7.play(start, end);
});
return this.backend.play(start, end);
}
/**
* Set a point in seconds for playback to stop at.
*
* @param {number} position Position (in seconds) to stop at
* @version 3.3.0
*/
}, {
key: "setPlayEnd",
value: function setPlayEnd(position) {
this.backend.setPlayEnd(position);
}
/**
* Stops and pauses playback
*
* @example wavesurfer.pause();
* @return {Promise} Result of the backend pause method
*/
}, {
key: "pause",
value: function pause() {
if (!this.backend.isPaused()) {
return this.backend.pause();
}
}
/**
* Toggle playback
*
* @example wavesurfer.playPause();
* @return {Promise} Result of the backend play or pause method
*/
}, {
key: "playPause",
value: function playPause() {
return this.backend.isPaused() ? this.play() : this.pause();
}
/**
* Get the current playback state
*
* @example const isPlaying = wavesurfer.isPlaying();
* @return {boolean} False if paused, true if playing
*/
}, {
key: "isPlaying",
value: function isPlaying() {
return !this.backend.isPaused();
}
/**
* Skip backward
*
* @param {?number} seconds Amount to skip back, if not specified `skipLength`
* is used
* @example wavesurfer.skipBackward();
*/
}, {
key: "skipBackward",
value: function skipBackward(seconds) {
this.skip(-seconds || -this.params.skipLength);
}
/**
* Skip forward
*
* @param {?number} seconds Amount to skip back, if not specified `skipLength`
* is used
* @example wavesurfer.skipForward();
*/
}, {
key: "skipForward",
value: function skipForward(seconds) {
this.skip(seconds || this.params.skipLength);
}
/**
* Skip a number of seconds from the current position (use a negative value
* to go backwards).
*
* @param {number} offset Amount to skip back or forwards
* @example
* // go back 2 seconds
* wavesurfer.skip(-2);
*/
}, {
key: "skip",
value: function skip(offset) {
var duration = this.getDuration() || 1;
var position = this.getCurrentTime() || 0;
position = Math.max(0, Math.min(duration, position + (offset || 0)));
this.seekAndCenter(position / duration);
}
/**
* Seeks to a position and centers the view
*
* @param {number} progress Between 0 (=beginning) and 1 (=end)
* @example
* // seek and go to the middle of the audio
* wavesurfer.seekTo(0.5);
*/
}, {
key: "seekAndCenter",
value: function seekAndCenter(progress) {
this.seekTo(progress);
this.drawer.recenter(progress);
}
/**
* Seeks to a position
*
* @param {number} progress Between 0 (=beginning) and 1 (=end)
* @emits WaveSurfer#interaction
* @emits WaveSurfer#seek
* @example
* // seek to the middle of the audio
* wavesurfer.seekTo(0.5);
*/
}, {
key: "seekTo",
value: function seekTo(progress) {
var _this8 = this;
// return an error if progress is not a number between 0 and 1
if (typeof progress !== 'number' || !isFinite(progress) || progress < 0 || progress > 1) {
throw new Error('Error calling wavesurfer.seekTo, parameter must be a number between 0 and 1!');
}
this.fireEvent('interaction', function () {
return _this8.seekTo(progress);
});
var isWebAudioBackend = this.params.backend === 'WebAudio';
var paused = this.backend.isPaused();
if (isWebAudioBackend && !paused) {
this.backend.pause();
} // avoid small scrolls while paused seeking
var oldScrollParent = this.params.scrollParent;
this.params.scrollParent = false;
this.backend.seekTo(progress * this.getDuration());
this.drawer.progress(progress);
if (isWebAudioBackend && !paused) {
this.backend.play();
}
this.params.scrollParent = oldScrollParent;
this.fireEvent('seek', progress);
}
/**
* Stops and goes to the beginning.
*
* @example wavesurfer.stop();
*/
}, {
key: "stop",
value: function stop() {
this.pause();
this.seekTo(0);
this.drawer.progress(0);
}
/**
* Sets the ID of the audio device to use for output and returns a Promise.
*
* @param {string} deviceId String value representing underlying output
* device
* @returns {Promise} `Promise` that resolves to `undefined` when there are
* no errors detected.
*/
}, {
key: "setSinkId",
value: function setSinkId(deviceId) {
this.sink_id = deviceId
return this.backend.setSinkId(deviceId);
}
/**
* Set the playback volume.
*
* @param {number} newVolume A value between 0 and 1, 0 being no
* volume and 1 being full volume.
* @emits WaveSurfer#volume
*/
}, {
key: "setVolume",
value: function setVolume(newVolume) {
this.backend.setVolume(newVolume);
this.fireEvent('volume', newVolume);
}
/**
* Get the playback volume.
*
* @return {number} A value between 0 and 1, 0 being no
* volume and 1 being full volume.
*/
}, {
key: "getVolume",
value: function getVolume() {
return this.backend.getVolume();
}
/**
* Set the playback rate.
*
* @param {number} rate A positive number. E.g. 0.5 means half the normal
* speed, 2 means double speed and so on.
* @example wavesurfer.setPlaybackRate(2);
*/
}, {
key: "setPlaybackRate",
value: function setPlaybackRate(rate) {
this.backend.setPlaybackRate(rate);
}
/**
* Get the playback rate.
*
* @return {number} The current playback rate.
*/
}, {
key: "getPlaybackRate",
value: function getPlaybackRate() {
return this.backend.getPlaybackRate();
}
/**
* Toggle the volume on and off. If not currently muted it will save the
* current volume value and turn the volume off. If currently muted then it
* will restore the volume to the saved value, and then rest the saved
* value.
*
* @example wavesurfer.toggleMute();
*/
}, {
key: "toggleMute",
value: function toggleMute() {
this.setMute(!this.isMuted);
}
/**
* Enable or disable muted audio
*
* @param {boolean} mute Specify `true` to mute audio.
* @emits WaveSurfer#volume
* @emits WaveSurfer#mute
* @example
* // unmute
* wavesurfer.setMute(false);
* console.log(wavesurfer.getMute()) // logs false
*/
}, {
key: "setMute",
value: function setMute(mute) {
// ignore all muting requests if the audio is already in that state
if (mute === this.isMuted) {
this.fireEvent('mute', this.isMuted);
return;
}
if (this.backend.setMute) {
// Backends such as the MediaElement backend have their own handling
// of mute, let them handle it.
this.backend.setMute(mute);
this.isMuted = mute;
} else {
if (mute) {
// If currently not muted then save current volume,
// turn off the volume and update the mute properties
this.savedVolume = this.backend.getVolume();
this.backend.setVolume(0);
this.isMuted = true;
this.fireEvent('volume', 0);
} else {
// If currently muted then restore to the saved volume
// and update the mute properties
this.backend.setVolume(this.savedVolume);
this.isMuted = false;
this.fireEvent('volume', this.savedVolume);
}
}
this.fireEvent('mute', this.isMuted);
}
/**
* Get the current mute status.
*
* @example const isMuted = wavesurfer.getMute();
* @return {boolean} Current mute status
*/
}, {
key: "getMute",
value: function getMute() {
return this.isMuted;
}
/**
* Get the list of current set filters as an array.
*
* Filters must be set with setFilters method first
*
* @return {array} List of enabled filters
*/
}, {
key: "getFilters",
value: function getFilters() {
return this.backend.filters || [];
}
/**
* Toggles `scrollParent` and redraws
*
* @example wavesurfer.toggleScroll();
*/
}, {
key: "toggleScroll",
value: function toggleScroll() {
this.params.scrollParent = !this.params.scrollParent;
this.drawBuffer();
}
/**
* Toggle mouse interaction
*
* @example wavesurfer.toggleInteraction();
*/
}, {
key: "toggleInteraction",
value: function toggleInteraction() {
this.params.interact = !this.params.interact;
}
/**
* Get the fill color of the waveform after the cursor.
*
* @return {string} A CSS color string.
*/
}, {
key: "getWaveColor",
value: function getWaveColor() {
return this.params.waveColor;
}
/**
* Set the fill color of the waveform after the cursor.
*
* @param {string} color A CSS color string.
* @example wavesurfer.setWaveColor('#ddd');
*/
}, {
key: "setWaveColor",
value: function setWaveColor(color) {
this.params.waveColor = color;
this.drawBuffer();
}
/**
* Get the fill color of the waveform behind the cursor.
*
* @return {string} A CSS color string.
*/
}, {
key: "getProgressColor",
value: function getProgressColor() {
return this.params.progressColor;
}
/**
* Set the fill color of the waveform behind the cursor.
*
* @param {string} color A CSS color string.
* @example wavesurfer.setProgressColor('#400');
*/
}, {
key: "setProgressColor",
value: function setProgressColor(color) {
this.params.progressColor = color;
this.drawBuffer();
}
/**
* Get the background color of the waveform container.
*
* @return {string} A CSS color string.
*/
}, {
key: "getBackgroundColor",
value: function getBackgroundColor() {
return this.params.backgroundColor;
}
/**
* Set the background color of the waveform container.
*
* @param {string} color A CSS color string.
* @example wavesurfer.setBackgroundColor('#FF00FF');
*/
}, {
key: "setBackgroundColor",
value: function setBackgroundColor(color) {
this.params.backgroundColor = color;
util.style(this.container, {
background: this.params.backgroundColor
});
}
/**
* Get the fill color of the cursor indicating the playhead
* position.
*
* @return {string} A CSS color string.
*/
}, {
key: "getCursorColor",
value: function getCursorColor() {
return this.params.cursorColor;
}
/**
* Set the fill color of the cursor indicating the playhead
* position.
*
* @param {string} color A CSS color string.
* @example wavesurfer.setCursorColor('#222');
*/
}, {
key: "setCursorColor",
value: function setCursorColor(color) {
this.params.cursorColor = color;
this.drawer.updateCursor();
}
/**
* Get the height of the waveform.
*
* @return {number} Height measured in pixels.
*/
}, {
key: "getHeight",
value: function getHeight() {
return this.params.height;
}
/**
* Set the height of the waveform.
*
* @param {number} height Height measured in pixels.
* @example wavesurfer.setHeight(200);
*/
}, {
key: "setHeight",
value: function setHeight(height) {
this.params.height = height;
this.drawer.setHeight(height * this.params.pixelRatio);
this.drawBuffer();
}
/**
* Hide channels from being drawn on the waveform if splitting channels.
*
* For example, if we want to draw only the peaks for the right stereo channel:
*
* const wavesurfer = new WaveSurfer.create({...splitChannels: true});
* wavesurfer.load('stereo_audio.mp3');
*
* wavesurfer.setFilteredChannel([0]); <-- hide left channel peaks.
*
* @param {array} channelIndices Channels to be filtered out from drawing.
* @version 4.0.0
*/
}, {
key: "setFilteredChannels",
value: function setFilteredChannels(channelIndices) {
this.params.splitChannelsOptions.filterChannels = channelIndices;
this.drawBuffer();
}
/**
* Get the correct peaks for current wave view-port and render wave
*
* @private
* @emits WaveSurfer#redraw
*/
}, {
key: "drawBuffer",
value: function drawBuffer() {
var nominalWidth = Math.round(this.getDuration() * this.params.minPxPerSec * this.params.pixelRatio);
var parentWidth = this.drawer.getWidth();
var width = nominalWidth; // always start at 0 after zooming for scrolling : issue redraw left part
var start = 0;
var end = Math.max(start + parentWidth, width); // Fill container
if (this.params.fillParent && (!this.params.scrollParent || nominalWidth < parentWidth)) {
width = parentWidth;
start = 0;
end = width;
}
var peaks;
if (this.params.partialRender) {
var newRanges = this.peakCache.addRangeToPeakCache(width, start, end);
var i;
for (i = 0; i < newRanges.length; i++) {
peaks = this.backend.getPeaks(width, newRanges[i][0], newRanges[i][1]);
this.drawer.drawPeaks(peaks, width, newRanges[i][0], newRanges[i][1]);
}
} else {
peaks = this.backend.getPeaks(width, start, end);
this.drawer.drawPeaks(peaks, width, start, end);
}
this.fireEvent('redraw', peaks, width);
}
/**
* Horizontally zooms the waveform in and out. It also changes the parameter
* `minPxPerSec` and enables the `scrollParent` option. Calling the function
* with a falsey parameter will reset the zoom state.
*
* @param {?number} pxPerSec Number of horizontal pixels per second of
* audio, if none is set the waveform returns to unzoomed state
* @emits WaveSurfer#zoom
* @example wavesurfer.zoom(20);
*/
}, {
key: "zoom",
value: function zoom(pxPerSec) {
if (!pxPerSec) {
this.params.minPxPerSec = this.defaultParams.minPxPerSec;
this.params.scrollParent = false;
} else {
this.params.minPxPerSec = pxPerSec;
this.params.scrollParent = true;
}
this.drawBuffer();
this.drawer.progress(this.backend.getPlayedPercents());
this.drawer.recenter(this.getCurrentTime() / this.getDuration());
this.fireEvent('zoom', pxPerSec);
}
/**
* Decode buffer and load
*
* @private
* @param {ArrayBuffer} arraybuffer Buffer to process
*/
}, {
key: "loadArrayBuffer",
value: function loadArrayBuffer(arraybuffer) {
var _this9 = this;
this.decodeArrayBuffer(arraybuffer, function (data) {
if (!_this9.isDestroyed) {
_this9.loadDecodedBuffer(data);
}
});
}
/**
* Directly load an externally decoded AudioBuffer
*
* @private
* @param {AudioBuffer} buffer Buffer to process
* @emits WaveSurfer#ready
*/
}, {
key: "loadDecodedBuffer",
value: function loadDecodedBuffer(buffer) {
this.backend.load(buffer);
this.drawBuffer();
this.isReady = true;
this.fireEvent('ready');
}
/**
* Loads audio data from a Blob or File object
*
* @param {Blob|File} blob Audio data
* @example
*/
}, {
key: "loadBlob",
value: function loadBlob(blob) {
var _this10 = this;
// Create file reader
var reader = new FileReader();
reader.addEventListener('progress', function (e) {
return _this10.onProgress(e);
});
reader.addEventListener('load', function (e) {
return _this10.loadArrayBuffer(e.target.result);
});
reader.addEventListener('error', function () {
return _this10.fireEvent('error', 'Error reading file');
});
reader.readAsArrayBuffer(blob);
this.empty();
}
/**
* Loads audio and re-renders the waveform.
*
* @param {string|HTMLMediaElement} url The url of the audio file or the
* audio element with the audio
* @param {number[]|Number.<Array[]>} peaks Wavesurfer does not have to decode
* the audio to render the waveform if this is specified
* @param {?string} preload (Use with backend `MediaElement` and `MediaElementWebAudio`)
* `'none'|'metadata'|'auto'` Preload attribute for the media element
* @param {?number} duration The duration of the audio. This is used to
* render the peaks data in the correct size for the audio duration (as
* befits the current `minPxPerSec` and zoom value) without having to decode
* the audio.
* @returns {void}
* @throws Will throw an error if the `url` argument is empty.
* @example
* // uses fetch or media element to load file (depending on backend)
* wavesurfer.load('http://example.com/demo.wav');
*
* // setting preload attribute with media element backend and supplying
* // peaks
* wavesurfer.load(
* 'http://example.com/demo.wav',
* [0.0218, 0.0183, 0.0165, 0.0198, 0.2137, 0.2888],
* true
* );
*/
}, {
key: "load",
value: function load(url, peaks, preload, duration) {
if (!url) {
throw new Error('url parameter cannot be empty');
}
this.empty();
if (preload) {
// check whether the preload attribute will be usable and if not log
// a warning listing the reasons why not and nullify the variable
var preloadIgnoreReasons = {
"Preload is not 'auto', 'none' or 'metadata'": ['auto', 'metadata', 'none'].indexOf(preload) === -1,
'Peaks are not provided': !peaks,
"Backend is not of type 'MediaElement' or 'MediaElementWebAudio'": ['MediaElement', 'MediaElementWebAudio'].indexOf(this.params.backend) === -1,
'Url is not of type string': typeof url !== 'string'
};
var activeReasons = Object.keys(preloadIgnoreReasons).filter(function (reason) {
return preloadIgnoreReasons[reason];
});
if (activeReasons.length) {
// eslint-disable-next-line no-console
console.warn('Preload parameter of wavesurfer.load will be ignored because:\n\t- ' + activeReasons.join('\n\t- ')); // stop invalid values from being used
preload = null;
}
} // loadBuffer(url, peaks, duration) requires that url is a string
// but users can pass in a HTMLMediaElement to WaveSurfer
if (this.params.backend === 'WebAudio' && url instanceof HTMLMediaElement) {
url = url.src;
}
switch (this.params.backend) {
case 'WebAudio':
return this.loadBuffer(url, peaks, duration);
case 'MediaElement':
case 'MediaElementWebAudio':
return this.loadMediaElement(url, peaks, preload, duration);
}
}
/**
* Loads audio using Web Audio buffer backend.
*
* @private
* @emits WaveSurfer#waveform-ready
* @param {string} url URL of audio file
* @param {number[]|Number.<Array[]>} peaks Peaks data
* @param {?number} duration Optional duration of audio file
* @returns {void}
*/
}, {
key: "loadBuffer",
value: function loadBuffer(url, peaks, duration) {
var _this11 = this;
var load = function load(action) {
if (action) {
_this11.tmpEvents.push(_this11.once('ready', action));
}
return _this11.getArrayBuffer(url, function (data) {
return _this11.loadArrayBuffer(data);
});
};
if (peaks) {
this.backend.setPeaks(peaks, duration);
this.drawBuffer();
this.fireEvent('waveform-ready');
this.tmpEvents.push(this.once('interaction', load));
} else {
return load();
}
}
/**
* Either create a media element, or load an existing media element.
*
* @private
* @emits WaveSurfer#waveform-ready
* @param {string|HTMLMediaElement} urlOrElt Either a path to a media file, or an
* existing HTML5 Audio/Video Element
* @param {number[]|Number.<Array[]>} peaks Array of peaks. Required to bypass web audio
* dependency
* @param {?boolean} preload Set to true if the preload attribute of the
* audio element should be enabled
* @param {?number} duration Optional duration of audio file
*/
}, {
key: "loadMediaElement",
value: function loadMediaElement(urlOrElt, peaks, preload, duration) {
var _this12 = this;
var url = urlOrElt;
if (typeof urlOrElt === 'string') {
this.backend.load(url, this.mediaContainer, peaks, preload);
} else {
var elt = urlOrElt;
this.backend.loadElt(elt, peaks); // If peaks are not provided,
// url = element.src so we can get peaks with web audio
url = elt.src;
}
this.tmpEvents.push(this.backend.once('canplay', function () {
// ignore when backend was already destroyed
if (!_this12.backend.destroyed) {
_this12.drawBuffer();
_this12.isReady = true;
_this12.fireEvent('ready');
}
}), this.backend.once('error', function (err) {
return _this12.fireEvent('error', err);
})); // If peaks are provided, render them and fire the `waveform-ready` event.
if (peaks) {
this.backend.setPeaks(peaks, duration);
this.drawBuffer();
this.fireEvent('waveform-ready');
} // If no pre-decoded peaks are provided, or are provided with
// forceDecode flag, attempt to download the audio file and decode it
// with Web Audio.
if ((!peaks || this.params.forceDecode) && this.backend.supportsWebAudio()) {
this.getArrayBuffer(url, function (arraybuffer) {
_this12.decodeArrayBuffer(arraybuffer, function (buffer) {
_this12.backend.buffer = buffer;
_this12.backend.setPeaks(null);
_this12.drawBuffer();
_this12.fireEvent('waveform-ready');
});
});
}
}
/**
* Decode an array buffer and pass data to a callback
*
* @private
* @param {Object} arraybuffer The array buffer to decode
* @param {function} callback The function to call on complete
*/
}, {
key: "decodeArrayBuffer",
value: function decodeArrayBuffer(arraybuffer, callback) {
var _this13 = this;
this.arraybuffer = arraybuffer;
this.backend.decodeArrayBuffer(arraybuffer, function (data) {
// Only use the decoded data if we haven't been destroyed or
// another decode started in the meantime
if (!_this13.isDestroyed && _this13.arraybuffer == arraybuffer) {
callback(data);
_this13.arraybuffer = null;
}
}, function () {
return _this13.fireEvent('error', 'Error decoding audiobuffer');
});
}
/**
* Load an array buffer using fetch and pass the result to a callback
*
* @param {string} url The URL of the file object
* @param {function} callback The function to call on complete
* @returns {util.fetchFile} fetch call
* @private
*/
}, {
key: "getArrayBuffer",
value: function getArrayBuffer(url, callback) {
var _this14 = this;
var options = Object.assign({
url: url,
responseType: 'arraybuffer'
}, this.params.xhr);
var request = util.fetchFile(options);
this.currentRequest = request;
this.tmpEvents.push(request.on('progress', function (e) {
_this14.onProgress(e);
}), request.on('success', function (data) {
callback(data);
_this14.currentRequest = null;
}), request.on('error', function (e) {
_this14.fireEvent('error', e);
_this14.currentRequest = null;
}));
return request;
}
/**
* Called while the audio file is loading
*
* @private
* @param {Event} e Progress event
* @emits WaveSurfer#loading
*/
}, {
key: "onProgress",
value: function onProgress(e) {
var percentComplete;
if (e.lengthComputable) {
percentComplete = e.loaded / e.total;
} else {
// Approximate progress with an asymptotic
// function, and assume downloads in the 1-3 MB range.
percentComplete = e.loaded / (e.loaded + 1000000);
}
this.fireEvent('loading', Math.round(percentComplete * 100), e.target);
}
/**
* Exports PCM data into a JSON array and optionally opens in a new window
* as valid JSON Blob instance.
*
* @param {number} length=1024 The scale in which to export the peaks
* @param {number} accuracy=10000
* @param {?boolean} noWindow Set to true to disable opening a new
* window with the JSON
* @param {number} start Start index
* @param {number} end End index
* @return {Promise} Promise that resolves with array of peaks
*/
}, {
key: "exportPCM",
value: function exportPCM(length, accuracy, noWindow, start, end) {
length = length || 1024;
start = start || 0;
accuracy = accuracy || 10000;
noWindow = noWindow || false;
var peaks = this.backend.getPeaks(length, start, end);
var arr = [].map.call(peaks, function (val) {
return Math.round(val * accuracy) / accuracy;
});
return new Promise(function (resolve, reject) {
if (!noWindow) {
var blobJSON = new Blob([JSON.stringify(arr)], {
type: 'application/json;charset=utf-8'
});
var objURL = URL.createObjectURL(blobJSON);
window.open(objURL);
URL.revokeObjectURL(objURL);
}
resolve(arr);
});
}
/**
* Save waveform image as data URI.
*
* The default format is `'image/png'`. Other supported types are
* `'image/jpeg'` and `'image/webp'`.
*
* @param {string} format='image/png' A string indicating the image format.
* The default format type is `'image/png'`.
* @param {number} quality=1 A number between 0 and 1 indicating the image
* quality to use for image formats that use lossy compression such as
* `'image/jpeg'`` and `'image/webp'`.
* @param {string} type Image data type to return. Either 'dataURL' (default)
* or 'blob'.
* @return {string|string[]|Promise} When using `'dataURL'` type this returns
* a single data URL or an array of data URLs, one for each canvas. When using
* `'blob'` type this returns a `Promise` resolving with an array of `Blob`
* instances, one for each canvas.
*/
}, {
key: "exportImage",
value: function exportImage(format, quality, type) {
if (!format) {
format = 'image/png';
}
if (!quality) {
quality = 1;
}
if (!type) {
type = 'dataURL';
}
return this.drawer.getImage(format, quality, type);
}
/**
* Cancel any fetch request currently in progress
*/
}, {
key: "cancelAjax",
value: function cancelAjax() {
if (this.currentRequest && this.currentRequest.controller) {
// If the current request has a ProgressHandler, then its ReadableStream might need to be cancelled too
// See: Wavesurfer issue #2042
// See Firefox bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1583815
if (this.currentRequest._reader) {
// Ignoring exceptions thrown by call to cancel()
this.currentRequest._reader.cancel().catch(function (err) {});
}
this.currentRequest.controller.abort();
this.currentRequest = null;
}
}
/**
* @private
*/
}, {
key: "clearTmpEvents",
value: function clearTmpEvents() {
this.tmpEvents.forEach(function (e) {
return e.un();
});
}
/**
* Display empty waveform.
*/
}, {
key: "empty",
value: function empty() {
if (!this.backend.isPaused()) {
this.stop();
this.backend.disconnectSource();
}
this.isReady = false;
this.cancelAjax();
this.clearTmpEvents(); // empty drawer
this.drawer.progress(0);
this.drawer.setWidth(0);
this.drawer.drawPeaks({
length: this.drawer.getWidth()
}, 0);
}
/**
* Remove events, elements and disconnect WebAudio nodes.
*
* @emits WaveSurfer#destroy
*/
}, {
key: "destroy",
value: function destroy() {
this.destroyAllPlugins();
this.fireEvent('destroy');
this.cancelAjax();
this.clearTmpEvents();
this.unAll();
if (this.params.responsive !== false) {
window.removeEventListener('resize', this._onResize, true);
window.removeEventListener('orientationchange', this._onResize, true);
}
if (this.backend) {
this.backend.destroy(); // clears memory usage
this.backend = null;
}
if (this.drawer) {
this.drawer.destroy();
}
this.isDestroyed = true;
this.isReady = false;
this.arraybuffer = null;
}
}], [{
key: "create",
value:
/** @private */
/** @private */
/**
* Instantiate this class, call its `init` function and returns it
*
* @param {WavesurferParams} params The wavesurfer parameters
* @return {Object} WaveSurfer instance
* @example const wavesurfer = WaveSurfer.create(params);
*/
function create(params) {
var wavesurfer = new WaveSurfer(params);
return wavesurfer.init();
}
/**
* The library version number is available as a static property of the
* WaveSurfer class
*
* @type {String}
* @example
* console.log('Using wavesurfer.js ' + WaveSurfer.VERSION);
*/
}]);
return WaveSurfer;
}(util.Observer);
exports.default = WaveSurfer;
WaveSurfer.VERSION = "5.1.0";
WaveSurfer.util = util;
module.exports = exports.default;
/***/ }),
/***/ "./src/webaudio.js":
/*!*************************!*\
!*** ./src/webaudio.js ***!
\*************************/
/***/ ((module, exports, __webpack_require__) => {
"use strict";
function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
Object.defineProperty(exports, "__esModule", ({
value: true
}));
exports.default = void 0;
var util = _interopRequireWildcard(__webpack_require__(/*! ./util */ "./src/util/index.js"));
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
// using constants to prevent someone writing the string wrong
var PLAYING = 'playing';
var PAUSED = 'paused';
var FINISHED = 'finished';
/**
* WebAudio backend
*
* @extends {Observer}
*/
var WebAudio = /*#__PURE__*/function (_util$Observer) {
_inherits(WebAudio, _util$Observer);
var _super = _createSuper(WebAudio);
/**
* Construct the backend
*
* @param {WavesurferParams} params Wavesurfer parameters
*/
function WebAudio(params) {
var _this$stateBehaviors, _this$states;
var _this;
_classCallCheck(this, WebAudio);
_this = _super.call(this);
/** @private */
_this.audioContext = null;
_this.offlineAudioContext = null;
_this.stateBehaviors = (_this$stateBehaviors = {}, _defineProperty(_this$stateBehaviors, PLAYING, {
init: function init() {
this.addOnAudioProcess();
},
getPlayedPercents: function getPlayedPercents() {
var duration = this.getDuration();
return this.getCurrentTime() / duration || 0;
},
getCurrentTime: function getCurrentTime() {
return this.startPosition + this.getPlayedTime();
}
}), _defineProperty(_this$stateBehaviors, PAUSED, {
init: function init() {
this.removeOnAudioProcess();
},
getPlayedPercents: function getPlayedPercents() {
var duration = this.getDuration();
return this.getCurrentTime() / duration || 0;
},
getCurrentTime: function getCurrentTime() {
return this.startPosition;
}
}), _defineProperty(_this$stateBehaviors, FINISHED, {
init: function init() {
this.removeOnAudioProcess();
this.fireEvent('finish');
},
getPlayedPercents: function getPlayedPercents() {
return 1;
},
getCurrentTime: function getCurrentTime() {
return this.getDuration();
}
}), _this$stateBehaviors);
_this.params = params;
/** ac: Audio Context instance */
_this.ac = params.audioContext || (_this.supportsWebAudio() ? _this.getAudioContext() : {});
/**@private */
_this.lastPlay = _this.ac.currentTime;
/** @private */
_this.startPosition = 0;
/** @private */
_this.scheduledPause = null;
/** @private */
_this.states = (_this$states = {}, _defineProperty(_this$states, PLAYING, Object.create(_this.stateBehaviors[PLAYING])), _defineProperty(_this$states, PAUSED, Object.create(_this.stateBehaviors[PAUSED])), _defineProperty(_this$states, FINISHED, Object.create(_this.stateBehaviors[FINISHED])), _this$states);
/** @private */
_this.buffer = null;
/** @private */
_this.filters = [];
/** gainNode: allows to control audio volume */
_this.gainNode = null;
/** @private */
_this.mergedPeaks = null;
/** @private */
_this.offlineAc = null;
/** @private */
_this.peaks = null;
/** @private */
_this.playbackRate = 1;
/** analyser: provides audio analysis information */
_this.analyser = null;
/** scriptNode: allows processing audio */
_this.scriptNode = null;
/** @private */
_this.source = null;
/** @private */
_this.splitPeaks = [];
/** @private */
_this.state = null;
/** @private */
_this.explicitDuration = params.duration;
/**
* Boolean indicating if the backend was destroyed.
*/
_this.destroyed = false;
return _this;
}
/**
* Initialise the backend, called in `wavesurfer.createBackend()`
*/
_createClass(WebAudio, [{
key: "supportsWebAudio",
value:
/** scriptBufferSize: size of the processing buffer */
/** audioContext: allows to process audio with WebAudio API */
/** @private */
/** @private */
/**
* Does the browser support this backend
*
* @return {boolean} Whether or not this browser supports this backend
*/
function supportsWebAudio() {
return !!(window.AudioContext || window.webkitAudioContext);
}
/**
* Get the audio context used by this backend or create one
*
* @return {AudioContext} Existing audio context, or creates a new one
*/
}, {
key: "getAudioContext",
value: function getAudioContext() {
if (!window.WaveSurferAudioContext) {
window.WaveSurferAudioContext = new (window.AudioContext || window.webkitAudioContext)();
}
return window.WaveSurferAudioContext;
}
/**
* Get the offline audio context used by this backend or create one
*
* @param {number} sampleRate The sample rate to use
* @return {OfflineAudioContext} Existing offline audio context, or creates
* a new one
*/
}, {
key: "getOfflineAudioContext",
value: function getOfflineAudioContext(sampleRate) {
if (!window.WaveSurferOfflineAudioContext) {
window.WaveSurferOfflineAudioContext = new (window.OfflineAudioContext || window.webkitOfflineAudioContext)(1, 2, sampleRate);
}
return window.WaveSurferOfflineAudioContext;
}
}, {
key: "init",
value: function init() {
this.createVolumeNode();
this.createScriptNode();
this.createAnalyserNode();
this.setState(PAUSED);
this.setPlaybackRate(this.params.audioRate);
this.setLength(0);
}
/** @private */
}, {
key: "disconnectFilters",
value: function disconnectFilters() {
if (this.filters) {
this.filters.forEach(function (filter) {
filter && filter.disconnect();
});
this.filters = null; // Reconnect direct path
this.analyser.connect(this.gainNode);
}
}
/**
* @private
*
* @param {string} state The new state
*/
}, {
key: "setState",
value: function setState(state) {
if (this.state !== this.states[state]) {
this.state = this.states[state];
this.state.init.call(this);
}
}
/**
* Unpacked `setFilters()`
*
* @param {...AudioNode} filters One or more filters to set
*/
}, {
key: "setFilter",
value: function setFilter() {
for (var _len = arguments.length, filters = new Array(_len), _key = 0; _key < _len; _key++) {
filters[_key] = arguments[_key];
}
this.setFilters(filters);
}
/**
* Insert custom Web Audio nodes into the graph
*
* @param {AudioNode[]} filters Packed filters array
* @example
* const lowpass = wavesurfer.backend.ac.createBiquadFilter();
* wavesurfer.backend.setFilter(lowpass);
*/
}, {
key: "setFilters",
value: function setFilters(filters) {
// Remove existing filters
this.disconnectFilters(); // Insert filters if filter array not empty
if (filters && filters.length) {
this.filters = filters; // Disconnect direct path before inserting filters
this.analyser.disconnect(); // Connect each filter in turn
filters.reduce(function (prev, curr) {
prev.connect(curr);
return curr;
}, this.analyser).connect(this.gainNode);
}
}
/** Create ScriptProcessorNode to process audio */
}, {
key: "createScriptNode",
value: function createScriptNode() {
if (this.params.audioScriptProcessor) {
this.scriptNode = this.params.audioScriptProcessor;
} else {
if (this.ac.createScriptProcessor) {
this.scriptNode = this.ac.createScriptProcessor(WebAudio.scriptBufferSize);
} else {
this.scriptNode = this.ac.createJavaScriptNode(WebAudio.scriptBufferSize);
}
}
this.scriptNode.connect(this.ac.destination);
}
/** @private */
}, {
key: "addOnAudioProcess",
value: function addOnAudioProcess() {
var _this2 = this;
this.scriptNode.onaudioprocess = function () {
var time = _this2.getCurrentTime();
if (time >= _this2.getDuration()) {
_this2.setState(FINISHED);
_this2.fireEvent('pause');
} else if (time >= _this2.scheduledPause) {
_this2.pause();
} else if (_this2.state === _this2.states[PLAYING]) {
_this2.fireEvent('audioprocess', time);
}
};
}
/** @private */
}, {
key: "removeOnAudioProcess",
value: function removeOnAudioProcess() {
this.scriptNode.onaudioprocess = null;
}
/** Create analyser node to perform audio analysis */
}, {
key: "createAnalyserNode",
value: function createAnalyserNode() {
this.analyser = this.ac.createAnalyser();
this.analyser.connect(this.gainNode);
}
/**
* Create the gain node needed to control the playback volume.
*
*/
}, {
key: "createVolumeNode",
value: function createVolumeNode() {
// Create gain node using the AudioContext
if (this.ac.createGain) {
this.gainNode = this.ac.createGain();
} else {
this.gainNode = this.ac.createGainNode();
} // Add the gain node to the graph
this.gainNode.connect(this.ac.destination);
}
/**
* Set the sink id for the media player
*
* @param {string} deviceId String value representing audio device id.
* @returns {Promise} A Promise that resolves to `undefined` when there
* are no errors.
*/
}, {
key: "setSinkId",
value: function setSinkId(deviceId) {
if (deviceId) {
/**
* The webaudio API doesn't currently support setting the device
* output. Here we create an HTMLAudioElement, connect the
* webaudio stream to that element and setSinkId there.
*/
var audio = new window.Audio();
if (!audio.setSinkId) {
return Promise.reject(new Error('setSinkId is not supported in your browser'));
}
audio.autoplay = true;
var dest = this.ac.createMediaStreamDestination();
this.gainNode.disconnect();
this.gainNode.connect(dest);
audio.srcObject = dest.stream;
return audio.setSinkId(deviceId);
} else {
return Promise.reject(new Error('Invalid deviceId: ' + deviceId));
}
}
/**
* Set the audio volume
*
* @param {number} value A floating point value between 0 and 1.
*/
}, {
key: "setVolume",
value: function setVolume(value) {
this.gainNode.gain.setValueAtTime(value, this.ac.currentTime);
}
/**
* Get the current volume
*
* @return {number} value A floating point value between 0 and 1.
*/
}, {
key: "getVolume",
value: function getVolume() {
return this.gainNode.gain.value;
}
/**
* Decode an array buffer and pass data to a callback
*
* @private
* @param {ArrayBuffer} arraybuffer The array buffer to decode
* @param {function} callback The function to call on complete.
* @param {function} errback The function to call on error.
*/
}, {
key: "decodeArrayBuffer",
value: function decodeArrayBuffer(arraybuffer, callback, errback) {
if (!this.offlineAc) {
this.offlineAc = this.getOfflineAudioContext(this.ac && this.ac.sampleRate ? this.ac.sampleRate : 44100);
}
if ('webkitAudioContext' in window) {
// Safari: no support for Promise-based decodeAudioData enabled
// Enable it in Safari using the Experimental Features > Modern WebAudio API option
this.offlineAc.decodeAudioData(arraybuffer, function (data) {
return callback(data);
}, errback);
} else {
this.offlineAc.decodeAudioData(arraybuffer).then(function (data) {
return callback(data);
}).catch(function (err) {
return errback(err);
});
}
}
/**
* Set pre-decoded peaks
*
* @param {number[]|Number.<Array[]>} peaks Peaks data
* @param {?number} duration Explicit duration
*/
}, {
key: "setPeaks",
value: function setPeaks(peaks, duration) {
if (duration != null) {
this.explicitDuration = duration;
}
this.peaks = peaks;
}
/**
* Set the rendered length (different from the length of the audio)
*
* @param {number} length The rendered length
*/
}, {
key: "setLength",
value: function setLength(length) {
// No resize, we can preserve the cached peaks.
if (this.mergedPeaks && length == 2 * this.mergedPeaks.length - 1 + 2) {
return;
}
this.splitPeaks = [];
this.mergedPeaks = []; // Set the last element of the sparse array so the peak arrays are
// appropriately sized for other calculations.
var channels = this.buffer ? this.buffer.numberOfChannels : 1;
var c;
for (c = 0; c < channels; c++) {
this.splitPeaks[c] = [];
this.splitPeaks[c][2 * (length - 1)] = 0;
this.splitPeaks[c][2 * (length - 1) + 1] = 0;
}
this.mergedPeaks[2 * (length - 1)] = 0;
this.mergedPeaks[2 * (length - 1) + 1] = 0;
}
/**
* Compute the max and min value of the waveform when broken into <length> subranges.
*
* @param {number} length How many subranges to break the waveform into.
* @param {number} first First sample in the required range.
* @param {number} last Last sample in the required range.
* @return {number[]|Number.<Array[]>} Array of 2*<length> peaks or array of arrays of
* peaks consisting of (max, min) values for each subrange.
*/
}, {
key: "getPeaks",
value: function getPeaks(length, first, last) {
if (this.peaks) {
return this.peaks;
}
if (!this.buffer) {
return [];
}
first = first || 0;
last = last || length - 1;
this.setLength(length);
if (!this.buffer) {
return this.params.splitChannels ? this.splitPeaks : this.mergedPeaks;
}
/**
* The following snippet fixes a buffering data issue on the Safari
* browser which returned undefined It creates the missing buffer based
* on 1 channel, 4096 samples and the sampleRate from the current
* webaudio context 4096 samples seemed to be the best fit for rendering
* will review this code once a stable version of Safari TP is out
*/
if (!this.buffer.length) {
var newBuffer = this.createBuffer(1, 4096, this.sampleRate);
this.buffer = newBuffer.buffer;
}
var sampleSize = this.buffer.length / length;
var sampleStep = ~~(sampleSize / 10) || 1;
var channels = this.buffer.numberOfChannels;
var c;
for (c = 0; c < channels; c++) {
var peaks = this.splitPeaks[c];
var chan = this.buffer.getChannelData(c);
var i = void 0;
for (i = first; i <= last; i++) {
var start = ~~(i * sampleSize);
var end = ~~(start + sampleSize);
/**
* Initialize the max and min to the first sample of this
* subrange, so that even if the samples are entirely
* on one side of zero, we still return the true max and
* min values in the subrange.
*/
var min = chan[start];
var max = min;
var j = void 0;
for (j = start; j < end; j += sampleStep) {
var value = chan[j];
if (value > max) {
max = value;
}
if (value < min) {
min = value;
}
}
peaks[2 * i] = max;
peaks[2 * i + 1] = min;
if (c == 0 || max > this.mergedPeaks[2 * i]) {
this.mergedPeaks[2 * i] = max;
}
if (c == 0 || min < this.mergedPeaks[2 * i + 1]) {
this.mergedPeaks[2 * i + 1] = min;
}
}
}
return this.params.splitChannels ? this.splitPeaks : this.mergedPeaks;
}
/**
* Get the position from 0 to 1
*
* @return {number} Position
*/
}, {
key: "getPlayedPercents",
value: function getPlayedPercents() {
return this.state.getPlayedPercents.call(this);
}
/** @private */
}, {
key: "disconnectSource",
value: function disconnectSource() {
if (this.source) {
this.source.disconnect();
}
}
/**
* Destroy all references with WebAudio, disconnecting audio nodes and closing Audio Context
*/
}, {
key: "destroyWebAudio",
value: function destroyWebAudio() {
this.disconnectFilters();
this.disconnectSource();
this.gainNode.disconnect();
this.scriptNode.disconnect();
this.analyser.disconnect(); // close the audioContext if closeAudioContext option is set to true
if (this.params.closeAudioContext) {
// check if browser supports AudioContext.close()
if (typeof this.ac.close === 'function' && this.ac.state != 'closed') {
this.ac.close();
} // clear the reference to the audiocontext
this.ac = null; // clear the actual audiocontext, either passed as param or the
// global singleton
if (!this.params.audioContext) {
window.WaveSurferAudioContext = null;
} else {
this.params.audioContext = null;
} // clear the offlineAudioContext
window.WaveSurferOfflineAudioContext = null;
}
}
/**
* This is called when wavesurfer is destroyed
*/
}, {
key: "destroy",
value: function destroy() {
if (!this.isPaused()) {
this.pause();
}
this.unAll();
this.buffer = null;
this.destroyed = true;
this.destroyWebAudio();
}
/**
* Loaded a decoded audio buffer
*
* @param {Object} buffer Decoded audio buffer to load
*/
}, {
key: "load",
value: function load(buffer) {
this.startPosition = 0;
this.lastPlay = this.ac.currentTime;
this.buffer = buffer;
this.createSource();
}
/** @private */
}, {
key: "createSource",
value: function createSource() {
this.disconnectSource();
this.source = this.ac.createBufferSource(); // adjust for old browsers
this.source.start = this.source.start || this.source.noteGrainOn;
this.source.stop = this.source.stop || this.source.noteOff;
this.setPlaybackRate(this.playbackRate);
this.source.buffer = this.buffer;
this.source.connect(this.analyser);
}
/**
* @private
*
* some browsers require an explicit call to #resume before they will play back audio
*/
}, {
key: "resumeAudioContext",
value: function resumeAudioContext() {
if (this.ac.state == 'suspended') {
this.ac.resume && this.ac.resume();
}
}
/**
* Used by `wavesurfer.isPlaying()` and `wavesurfer.playPause()`
*
* @return {boolean} Whether or not this backend is currently paused
*/
}, {
key: "isPaused",
value: function isPaused() {
return this.state !== this.states[PLAYING];
}
/**
* Used by `wavesurfer.getDuration()`
*
* @return {number} Duration of loaded buffer
*/
}, {
key: "getDuration",
value: function getDuration() {
if (this.explicitDuration) {
return this.explicitDuration;
}
if (!this.buffer) {
return 0;
}
return this.buffer.duration;
}
/**
* Used by `wavesurfer.seekTo()`
*
* @param {number} start Position to start at in seconds
* @param {number} end Position to end at in seconds
* @return {{start: number, end: number}} Object containing start and end
* positions
*/
}, {
key: "seekTo",
value: function seekTo(start, end) {
if (!this.buffer) {
return;
}
this.scheduledPause = null;
if (start == null) {
start = this.getCurrentTime();
if (start >= this.getDuration()) {
start = 0;
}
}
if (end == null) {
end = this.getDuration();
}
this.startPosition = start;
this.lastPlay = this.ac.currentTime;
if (this.state === this.states[FINISHED]) {
this.setState(PAUSED);
}
return {
start: start,
end: end
};
}
/**
* Get the playback position in seconds
*
* @return {number} The playback position in seconds
*/
}, {
key: "getPlayedTime",
value: function getPlayedTime() {
return (this.ac.currentTime - this.lastPlay) * this.playbackRate;
}
/**
* Plays the loaded audio region.
*
* @param {number} start Start offset in seconds, relative to the beginning
* of a clip.
* @param {number} end When to stop relative to the beginning of a clip.
*/
}, {
key: "play",
value: function play(start, end) {
if (!this.buffer) {
return;
} // need to re-create source on each playback
this.createSource();
var adjustedTime = this.seekTo(start, end);
start = adjustedTime.start;
end = adjustedTime.end;
this.scheduledPause = end;
this.source.start(0, start);
this.resumeAudioContext();
this.setState(PLAYING);
this.fireEvent('play');
}
/**
* Pauses the loaded audio.
*/
}, {
key: "pause",
value: function pause() {
this.scheduledPause = null;
this.startPosition += this.getPlayedTime();
this.source && this.source.stop(0);
this.setState(PAUSED);
this.fireEvent('pause');
}
/**
* Returns the current time in seconds relative to the audio-clip's
* duration.
*
* @return {number} The current time in seconds
*/
}, {
key: "getCurrentTime",
value: function getCurrentTime() {
return this.state.getCurrentTime.call(this);
}
/**
* Returns the current playback rate. (0=no playback, 1=normal playback)
*
* @return {number} The current playback rate
*/
}, {
key: "getPlaybackRate",
value: function getPlaybackRate() {
return this.playbackRate;
}
/**
* Set the audio source playback rate.
*
* @param {number} value The playback rate to use
*/
}, {
key: "setPlaybackRate",
value: function setPlaybackRate(value) {
this.playbackRate = value || 1;
this.source && this.source.playbackRate.setValueAtTime(this.playbackRate, this.ac.currentTime);
}
/**
* Set a point in seconds for playback to stop at.
*
* @param {number} end Position to end at
* @version 3.3.0
*/
}, {
key: "setPlayEnd",
value: function setPlayEnd(end) {
this.scheduledPause = end;
}
}]);
return WebAudio;
}(util.Observer);
exports.default = WebAudio;
WebAudio.scriptBufferSize = 256;
module.exports = exports.default;
/***/ }),
/***/ "./node_modules/debounce/index.js":
/*!****************************************!*\
!*** ./node_modules/debounce/index.js ***!
\****************************************/
/***/ ((module) => {
/**
* Returns a function, that, as long as it continues to be invoked, will not
* be triggered. The function will be called after it stops being called for
* N milliseconds. If `immediate` is passed, trigger the function on the
* leading edge, instead of the trailing. The function also has a property 'clear'
* that is a function which will clear the timer to prevent previously scheduled executions.
*
* @source underscore.js
* @see http://unscriptable.com/2009/03/20/debouncing-javascript-methods/
* @param {Function} function to wrap
* @param {Number} timeout in ms (`100`)
* @param {Boolean} whether to execute at the beginning (`false`)
* @api public
*/
function debounce(func, wait, immediate){
var timeout, args, context, timestamp, result;
if (null == wait) wait = 100;
function later() {
var last = Date.now() - timestamp;
if (last < wait && last >= 0) {
timeout = setTimeout(later, wait - last);
} else {
timeout = null;
if (!immediate) {
result = func.apply(context, args);
context = args = null;
}
}
};
var debounced = function(){
context = this;
args = arguments;
timestamp = Date.now();
var callNow = immediate && !timeout;
if (!timeout) timeout = setTimeout(later, wait);
if (callNow) {
result = func.apply(context, args);
context = args = null;
}
return result;
};
debounced.clear = function() {
if (timeout) {
clearTimeout(timeout);
timeout = null;
}
};
debounced.flush = function() {
if (timeout) {
result = func.apply(context, args);
context = args = null;
clearTimeout(timeout);
timeout = null;
}
};
return debounced;
};
// Adds compatibility for ES modules
debounce.debounce = debounce;
module.exports = debounce;
/***/ })
/******/ });
/************************************************************************/
/******/ // The module cache
/******/ var __webpack_module_cache__ = {};
/******/
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/ // Check if module is in cache
/******/ var cachedModule = __webpack_module_cache__[moduleId];
/******/ if (cachedModule !== undefined) {
/******/ return cachedModule.exports;
/******/ }
/******/ // Create a new module (and put it into the cache)
/******/ var module = __webpack_module_cache__[moduleId] = {
/******/ // no module.id needed
/******/ // no module.loaded needed
/******/ exports: {}
/******/ };
/******/
/******/ // Execute the module function
/******/ __webpack_modules__[moduleId](module, module.exports, __webpack_require__);
/******/
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/
/************************************************************************/
/******/
/******/ // startup
/******/ // Load entry module and return exports
/******/ // This entry module is referenced by other modules so it can't be inlined
/******/ var __webpack_exports__ = __webpack_require__("./src/wavesurfer.js");
/******/
/******/ return __webpack_exports__;
/******/ })()
;
});
//# sourceMappingURL=wavesurfer.js.map