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ace-step-ui/server/audio-editor/dist/wavesurfer.js
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fspecii af5343f9db Add missing wavesurfer.js for AudioMass editor 
AudioMass uses a custom fork of wavesurfer.js with getLoudness()
and other extensions. The dist/ folder was excluded by server/.gitignore.
Added gitignore exception for audio-editor/dist/.
2026-02-06 00:03:14 +02:00

6973 lines
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JavaScript
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/*!
* wavesurfer.js 2.0.5 (Thu Jun 28 2018 18:36:40 GMT-0700 (Pacific Daylight Time))
* https://github.com/katspaugh/wavesurfer.js
* @license BSD-3-Clause
*/
/**
* Calculate FFT - Based on https://github.com/corbanbrook/dsp.js
*/
/* eslint-disable complexity, no-redeclare, no-var, one-var */
const FFT = function(bufferSize, sampleRate, windowFunc, alpha) {
this.bufferSize = bufferSize;
this.sampleRate = sampleRate;
this.bandwidth = (2 / bufferSize) * (sampleRate / 2);
this.sinTable = new Float32Array(bufferSize);
this.cosTable = new Float32Array(bufferSize);
this.windowValues = new Float32Array(bufferSize);
this.reverseTable = new Uint32Array(bufferSize);
this.peakBand = 0;
this.peak = 0;
var i;
switch (windowFunc) {
case 'bartlett':
for (i = 0; i < bufferSize; i++) {
this.windowValues[i] =
(2 / (bufferSize - 1)) *
((bufferSize - 1) / 2 - Math.abs(i - (bufferSize - 1) / 2));
}
break;
case 'bartlettHann':
for (i = 0; i < bufferSize; i++) {
this.windowValues[i] =
0.62 -
0.48 * Math.abs(i / (bufferSize - 1) - 0.5) -
0.38 * Math.cos((Math.PI * 2 * i) / (bufferSize - 1));
}
break;
case 'blackman':
alpha = alpha || 0.16;
for (i = 0; i < bufferSize; i++) {
this.windowValues[i] =
(1 - alpha) / 2 -
0.5 * Math.cos((Math.PI * 2 * i) / (bufferSize - 1)) +
(alpha / 2) *
Math.cos((4 * Math.PI * i) / (bufferSize - 1));
}
break;
case 'cosine':
for (i = 0; i < bufferSize; i++) {
this.windowValues[i] = Math.cos(
(Math.PI * i) / (bufferSize - 1) - Math.PI / 2
);
}
break;
case 'gauss':
alpha = alpha || 0.25;
for (i = 0; i < bufferSize; i++) {
this.windowValues[i] = Math.pow(
Math.E,
-0.5 *
Math.pow(
(i - (bufferSize - 1) / 2) /
((alpha * (bufferSize - 1)) / 2),
2
)
);
}
break;
case 'hamming':
for (i = 0; i < bufferSize; i++) {
this.windowValues[i] =
0.54 -
0.46 * Math.cos((Math.PI * 2 * i) / (bufferSize - 1));
}
break;
case 'hann':
case undefined:
for (i = 0; i < bufferSize; i++) {
this.windowValues[i] =
0.5 * (1 - Math.cos((Math.PI * 2 * i) / (bufferSize - 1)));
}
break;
case 'lanczoz':
for (i = 0; i < bufferSize; i++) {
this.windowValues[i] =
Math.sin(Math.PI * ((2 * i) / (bufferSize - 1) - 1)) /
(Math.PI * ((2 * i) / (bufferSize - 1) - 1));
}
break;
case 'rectangular':
for (i = 0; i < bufferSize; i++) {
this.windowValues[i] = 1;
}
break;
case 'triangular':
for (i = 0; i < bufferSize; i++) {
this.windowValues[i] =
(2 / bufferSize) *
(bufferSize / 2 - Math.abs(i - (bufferSize - 1) / 2));
}
break;
default:
throw Error("No such window function '" + windowFunc + "'");
}
var limit = 1;
var bit = bufferSize >> 1;
var i;
while (limit < bufferSize) {
for (i = 0; i < limit; i++) {
this.reverseTable[i + limit] = this.reverseTable[i] + bit;
}
limit = limit << 1;
bit = bit >> 1;
}
for (i = 0; i < bufferSize; i++) {
this.sinTable[i] = Math.sin(-Math.PI / i);
this.cosTable[i] = Math.cos(-Math.PI / i);
}
this.calculateSpectrum = function(buffer) {
// Locally scope variables for speed up
var bufferSize = this.bufferSize,
cosTable = this.cosTable,
sinTable = this.sinTable,
reverseTable = this.reverseTable,
real = new Float32Array(bufferSize),
imag = new Float32Array(bufferSize),
bSi = 2 / this.bufferSize,
sqrt = Math.sqrt,
rval,
ival,
mag,
spectrum = new Float32Array(bufferSize / 2);
var k = Math.floor(Math.log(bufferSize) / Math.LN2);
if (Math.pow(2, k) !== bufferSize) {
throw 'Invalid buffer size, must be a power of 2.';
}
if (bufferSize !== buffer.length) {
throw 'Supplied buffer is not the same size as defined FFT. FFT Size: ' +
bufferSize +
' Buffer Size: ' +
buffer.length;
}
var halfSize = 1,
phaseShiftStepReal,
phaseShiftStepImag,
currentPhaseShiftReal,
currentPhaseShiftImag,
off,
tr,
ti,
tmpReal;
for (var i = 0; i < bufferSize; i++) {
real[i] =
buffer[reverseTable[i]] * this.windowValues[reverseTable[i]];
imag[i] = 0;
}
while (halfSize < bufferSize) {
phaseShiftStepReal = cosTable[halfSize];
phaseShiftStepImag = sinTable[halfSize];
currentPhaseShiftReal = 1;
currentPhaseShiftImag = 0;
for (var fftStep = 0; fftStep < halfSize; fftStep++) {
var i = fftStep;
while (i < bufferSize) {
off = i + halfSize;
tr =
currentPhaseShiftReal * real[off] -
currentPhaseShiftImag * imag[off];
ti =
currentPhaseShiftReal * imag[off] +
currentPhaseShiftImag * real[off];
real[off] = real[i] - tr;
imag[off] = imag[i] - ti;
real[i] += tr;
imag[i] += ti;
i += halfSize << 1;
}
tmpReal = currentPhaseShiftReal;
currentPhaseShiftReal =
tmpReal * phaseShiftStepReal -
currentPhaseShiftImag * phaseShiftStepImag;
currentPhaseShiftImag =
tmpReal * phaseShiftStepImag +
currentPhaseShiftImag * phaseShiftStepReal;
}
halfSize = halfSize << 1;
}
for (var i = 0, N = bufferSize / 2; i < N; i++) {
rval = real[i];
ival = imag[i];
mag = bSi * sqrt(rval * rval + ival * ival);
if (mag > this.peak) {
this.peakBand = i;
this.peak = mag;
}
spectrum[i] = mag;
}
return spectrum;
};
};
/* eslint-enable complexity, no-redeclare, no-var, one-var */
/*
function ASMWaveProcessor (stdlib, foreign, buffer) {
'use asm';
var MULT = stdlib.Math.imul;
var FLOOR = stdlib.Math.floor;
var MIN = stdlib.Math.min;
var MAX = stdlib.Math.max;
var HEAPU8 = new stdlib.Uint8Array( buffer );
var HEAPF32 = new stdlib.Float32Array( buffer );
var HEAPI32 = new stdlib.Uint32Array( buffer );
function GetPeaks (init, length, first, sampleStep, sampleSize) {
init = init|0;
length = length|0;
first = first|0;
sampleStep = sampleStep|0;
sampleSize = +sampleSize;
var i = 0;
var j = 0;
var min = 0.0;
var max = 0.0;
var start = 0;
var end = 0;
var value = 0.0;
// var peaks = this.splitPeaks[c];
for(i = init; (i|0) <= (length|0); i = (i + 1)|0) {
start = first|0 + ~~FLOOR(+(i|0)*sampleSize)|0;
end = (start|0) + ~~FLOOR(sampleSize)|0;
min = 0.0;
max = 0.0;
for (j = start; (j|0) < (end|0); j = (j + sampleStep)|0) {
value = +HEAPF32[ ((j|0) << 2) >> 2];
max = MAX(max, value);
min = MIN(min, value);
}
// put it in the end of the array...
// console.log( 'aa ', 2 * i, max );
HEAPF32[ (MULT(2, i|0) << 2) >> 2 ] = max;
HEAPF32[ ((MULT(2, i|0) + 1) << 2) >> 2 ] = min;
}
///////////////////////////
for (i = init; i <= length; ++i) {
var start = first + (i * sampleSize) >> 0;
var end = (start + sampleSize) >> 0;
var min = 0;
var max = 0;
var j = void 0;
for (j = start; j < end; j += sampleStep) {
var value = chan[j];
if (value > max) {
max = value;
}
else if (value < min) {
min = value;
//console.log( value );
}
}
// if (window.rr === 1)
// {
// console.log(1);
// }
peaks[2 * i] = max;
peaks[2 * i + 1] = min;
}
///////////////////////////
}
return { GetPeaks: GetPeaks };
}
var ASM_HEAP = new ArrayBuffer( 16777216 * 2 );
var ASM_stdlib = { Math: Math, Float32Array: Float32Array, Uint8Array: Uint8Array, Uint32Array: Uint32Array };
var ASM_LIB = new ASMWaveProcessor (ASM_stdlib, null, ASM_HEAP);
*/
(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();
})(window, function() {
return /******/ (function(modules) { // webpackBootstrap
/******/ // The module cache
/******/ var installedModules = {};
/******/
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/
/******/ // Check if module is in cache
/******/ if(installedModules[moduleId]) {
/******/ return installedModules[moduleId].exports;
/******/ }
/******/ // Create a new module (and put it into the cache)
/******/ var module = installedModules[moduleId] = {
/******/ i: moduleId,
/******/ l: false,
/******/ exports: {}
/******/ };
/******/
/******/ // Execute the module function
/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/ // Flag the module as loaded
/******/ module.l = true;
/******/
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/
/******/
/******/ // expose the modules object (__webpack_modules__)
/******/ __webpack_require__.m = modules;
/******/
/******/ // expose the module cache
/******/ __webpack_require__.c = installedModules;
/******/
/******/ // define getter function for harmony exports
/******/ __webpack_require__.d = function(exports, name, getter) {
/******/ if(!__webpack_require__.o(exports, name)) {
/******/ Object.defineProperty(exports, name, { enumerable: true, get: getter });
/******/ }
/******/ };
/******/
/******/ // define __esModule on exports
/******/ __webpack_require__.r = function(exports) {
/******/ if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
/******/ Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
/******/ }
/******/ Object.defineProperty(exports, '__esModule', { value: true });
/******/ };
/******/
/******/ // create a fake namespace object
/******/ // mode & 1: value is a module id, require it
/******/ // mode & 2: merge all properties of value into the ns
/******/ // mode & 4: return value when already ns object
/******/ // mode & 8|1: behave like require
/******/ __webpack_require__.t = function(value, mode) {
/******/ if(mode & 1) value = __webpack_require__(value);
/******/ if(mode & 8) return value;
/******/ if((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;
/******/ var ns = Object.create(null);
/******/ __webpack_require__.r(ns);
/******/ Object.defineProperty(ns, 'default', { enumerable: true, value: value });
/******/ if(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));
/******/ return ns;
/******/ };
/******/
/******/ // getDefaultExport function for compatibility with non-harmony modules
/******/ __webpack_require__.n = function(module) {
/******/ var getter = module && module.__esModule ?
/******/ function getDefault() { return module['default']; } :
/******/ function getModuleExports() { return module; };
/******/ __webpack_require__.d(getter, 'a', getter);
/******/ return getter;
/******/ };
/******/
/******/ // Object.prototype.hasOwnProperty.call
/******/ __webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
/******/
/******/ // __webpack_public_path__
/******/ __webpack_require__.p = "";
/******/
/******/
/******/ // Load entry module and return exports
/******/ return __webpack_require__(__webpack_require__.s = "./src/wavesurfer.js");
/******/ })
/************************************************************************/
/******/ ({
/***/ "./node_modules/debounce/index.js":
/*!****************************************!*\
!*** ./node_modules/debounce/index.js ***!
\****************************************/
/*! no static exports found */
/***/ (function(module, exports) {
/**
* 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
*/
module.exports = 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;
};
/***/ }),
/***/ "./src/drawer.js":
/*!***********************!*\
!*** ./src/drawer.js ***!
\***********************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = 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); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _util = __webpack_require__(/*! ./util */ "./src/util/index.js");
var util = _interopRequireWildcard(_util);
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
/**
* Parent class for renderers
*
* @extends {Observer}
*/
var Drawer = function (_util$Observer) {
_inherits(Drawer, _util$Observer);
/**
* @param {HTMLElement} container The container node of the wavesurfer instance
* @param {WavesurferParams} params The wavesurfer initialisation options
*/
function Drawer(container, params) {
_classCallCheck(this, Drawer);
/** @private */
var _this = _possibleConstructorReturn(this, (Drawer.__proto__ || Object.getPrototypeOf(Drawer)).call(this));
_this.container = container;
/**
* @type {WavesurferParams}
* @private
*/
_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;
/** @private */
_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 = this.container.appendChild(document.createElement('wave'));
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 = (e.targetTouches && e.targetTouches[0]) ? e.targetTouches[0].clientX : e.clientX;
var bbox = this._bbox; // this.wrapper.getBoundingClientRect();
var nominalWidth = this.width;
var parentWidth = this.getWidth();
var progress = 0;
if (!this.params.fillParent && nominalWidth < parentWidth) {
progress = (clientX - bbox.left) * this.params.pixelRatio;
progress = progress || 0;
if (progress > 1) {
progress = 1;
}
} else {
progress = (clientX - bbox.left) / this.width || 0;
}
return progress;
}
/**
* @private
*/
}, {
key: 'setupWrapperEvents',
value: function setupWrapperEvents() {
var _this2 = this;
this.wrapper.addEventListener('click', function (e) {
// 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 (e.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('touchstart', function (e) {
if (_this2.params.interact) {
_this2.fireEvent('touchstart', e);
}
});
this.wrapper.addEventListener('touchmove', function (e) {
if (_this2.params.interact) {
_this2.fireEvent('touchmove', e);
}
});
this.wrapper.addEventListener('touchend', function (e) {
if (_this2.params.interact) {
_this2.fireEvent('touchend', e);
}
});
this.wrapper.addEventListener('scroll', function (e) {
return _this2.fireEvent('scroll', e);
});
this.wrapper.addEventListener('wheel', function (e) {
return _this2.fireEvent('wheel', e);
});
}
/**
* Draw peaks on the canvas
*
* @param {number[]|number[][]} 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, totalChannels, shift) {
var _this3 = this;
requestAnimationFrame(function () {
_this3.shift = shift;
//if (shift === 999999999 && !_this3.shiftClear) {
// return ;
//}
if (!_this3.setWidth(length)) {
_this3.clearWave();
}
// _this3.params.barWidth ? _this3.drawBars(peaks, 0, start, end) :
_this3.drawWave(peaks, 0, start, end, totalChannels);
});
}
}, {
key: 'drawSpectre',
value: function drawSpectre(frequencies, length, start, end, vis_duration, duration, sample_rate ) {
var q = this;
//debugger;
if (!q.setWidth(length)) {
q.clearWave();
}
//console.log( length, start, end, vis_duration, duration, sample_rate );
var resample2 = function (freqs) {
var pixels = q.width;
var freq_len = freqs.length;
var jump = freq_len / pixels;
var new_freqs = [];
var new_freq_len = 0;
// debugger;
if (duration < start + vis_duration)
{
vis_duration = duration - start;
}
var beginning = start/duration;
var freq_start = 0;
if (beginning !== 0)
{
freq_start = (freq_len * beginning) >> 0;
}
// skip frequencies that are before beginning
var total = vis_duration/duration;
if (total !== 1)
{
new_freq_len = freq_len - (( (1-total) * freq_len) >> 0);
jump = new_freq_len / pixels;
}
// console.log( pixels, freq_len, jump );
for (var i = 0; i < pixels; ++i)
{
new_freqs[i] = freqs[ freq_start + (i * jump) >> 0];
}
return (new_freqs);
};
var resample = function (oldMatrix) {
var columnsNumber = q.width;
var newMatrix = [];
var oldPiece = 1 / oldMatrix.length;
var newPiece = 1 / columnsNumber;
var i;
debugger;
for (i = 0; i < columnsNumber; i++)
{
var column = new Array(oldMatrix[0].length);
var j = void 0;
for (j = 0; j < oldMatrix.length; j++) {
var oldStart = j * oldPiece;
var oldEnd = oldStart + oldPiece;
var newStart = i * newPiece;
var newEnd = newStart + newPiece;
var overlap = oldEnd <= newStart || newEnd <= oldStart ? 0 : Math.min(Math.max(oldEnd, newStart), Math.max(newEnd, oldStart)) - Math.max(Math.min(oldEnd, newStart), Math.min(newEnd, oldStart));
var k = void 0;
/* eslint-disable max-depth */
if (overlap > 0) {
for (k = 0; k < oldMatrix[0].length; k++) {
if (column[k] == null) {
column[k] = 0;
}
column[k] += overlap / newPiece * oldMatrix[j][k];
}
}
/* eslint-enable max-depth */
}
var intColumn = new Uint8Array(oldMatrix[0].length);
var m = void 0;
for (m = 0; m < oldMatrix[0].length; m++) {
intColumn[m] = column[m];
}
newMatrix.push(intColumn);
}
return newMatrix;
};
var _colorMap = [[0,0,0,1],[0.011764705882352941,0,0,1],[0.023529411764705882,0,0,1],[0.03529411764705882,0,0,1],[0.047058823529411764,0,0,1],[0.058823529411764705,0,0,1],[0.07058823529411765,0,0,1],[0.08235294117647059,0,0,1],[0.09411764705882353,0,0,1],[0.10588235294117647,0,0,1],[0.11764705882352941,0,0,1],[0.12941176470588237,0,0,1],[0.1411764705882353,0,0,1],[0.15294117647058825,0,0,1],[0.16470588235294117,0,0,1],[0.17647058823529413,0,0,1],[0.18823529411764706,0,0,1],[0.2,0,0,1],[0.21176470588235294,0,0,1],[0.2235294117647059,0,0,1],[0.23529411764705882,0,0,1],[0.24705882352941178,0,0,1],[0.25882352941176473,0,0,1],[0.27058823529411763,0,0,1],[0.2823529411764706,0,0,1],[0.29411764705882354,0,0,1],[0.3058823529411765,0,0,1],[0.3176470588235294,0,0,1],[0.32941176470588235,0,0,1],[0.3411764705882353,0,0,1],[0.35294117647058826,0,0,1],[0.36470588235294116,0,0,1],[0.3764705882352941,0,0,1],[0.38823529411764707,0,0,1],[0.4,0,0,1],[0.4117647058823529,0,0,1],[0.4235294117647059,0,0,1],[0.43529411764705883,0,0,1],[0.4470588235294118,0,0,1],[0.4549019607843137,0,0,1],[0.4666666666666667,0,0,1],[0.47843137254901963,0,0,1],[0.49019607843137253,0,0,1],[0.5019607843137255,0,0,1],[0.5137254901960784,0,0,1],[0.5254901960784314,0,0,1],[0.5372549019607843,0,0,1],[0.5490196078431373,0,0,1],[0.5607843137254902,0,0,1],[0.5725490196078431,0,0,1],[0.5843137254901961,0,0,1],[0.596078431372549,0,0,1],[0.6078431372549019,0,0,1],[0.6196078431372549,0,0,1],[0.6313725490196078,0,0,1],[0.6431372549019608,0,0,1],[0.6549019607843137,0,0,1],[0.6666666666666666,0,0,1],[0.6784313725490196,0,0,1],[0.6901960784313725,0,0,1],[0.7019607843137254,0,0,1],[0.7137254901960784,0,0,1],[0.7254901960784313,0,0,1],[0.7372549019607844,0,0,1],[0.7490196078431373,0,0,1],[0.7607843137254902,0,0,1],[0.7725490196078432,0,0,1],[0.7843137254901961,0,0,1],[0.796078431372549,0,0,1],[0.807843137254902,0,0,1],[0.8196078431372549,0,0,1],[0.8313725490196079,0,0,1],[0.8431372549019608,0,0,1],[0.8549019607843137,0,0,1],[0.8666666666666667,0,0,1],[0.8784313725490196,0,0,1],[0.8901960784313725,0,0,1],[0.9019607843137255,0,0,1],[0.9019607843137255,0.011764705882352941,0,1],[0.9058823529411765,0.023529411764705882,0,1],[0.9058823529411765,0.03137254901960784,0,1],[0.9058823529411765,0.043137254901960784,0,1],[0.9098039215686274,0.054901960784313725,0,1],[0.9098039215686274,0.06666666666666667,0,1],[0.9098039215686274,0.07450980392156863,0,1],[0.9137254901960784,0.08627450980392157,0,1],[0.9137254901960784,0.09803921568627451,0,1],[0.9137254901960784,0.10980392156862745,0,1],[0.9176470588235294,0.11764705882352941,0,1],[0.9176470588235294,0.12941176470588237,0,1],[0.9176470588235294,0.1411764705882353,0,1],[0.9215686274509803,0.15294117647058825,0,1],[0.9215686274509803,0.1607843137254902,0,1],[0.9215686274509803,0.17254901960784313,0,1],[0.9254901960784314,0.1843137254901961,0,1],[0.9254901960784314,0.19607843137254902,0,1],[0.9254901960784314,0.20784313725490197,0,1],[0.9294117647058824,0.21568627450980393,0,1],[0.9294117647058824,0.22745098039215686,0,1],[0.9294117647058824,0.23921568627450981,0,1],[0.9333333333333333,0.25098039215686274,0,1],[0.9333333333333333,0.25882352941176473,0,1],[0.9333333333333333,0.27058823529411763,0,1],[0.9372549019607843,0.2823529411764706,0,1],[0.9372549019607843,0.29411764705882354,0,1],[0.9372549019607843,0.30196078431372547,0,1],[0.9411764705882353,0.3137254901960784,0,1],[0.9411764705882353,0.3254901960784314,0,1],[0.9411764705882353,0.33725490196078434,0,1],[0.9450980392156862,0.34509803921568627,0,1],[0.9450980392156862,0.3568627450980392,0,1],[0.9450980392156862,0.3686274509803922,0,1],[0.9490196078431372,0.3803921568627451,0,1],[0.9490196078431372,0.38823529411764707,0,1],[0.9490196078431372,0.4,0,1],[0.9529411764705882,0.4117647058823529,0,1],[0.9529411764705882,0.4235294117647059,0,1],[0.9529411764705882,0.43529411764705883,0,1],[0.9529411764705882,0.44313725490196076,0,1],[0.9568627450980393,0.4549019607843137,0,1],[0.9568627450980393,0.4666666666666667,0,1],[0.9568627450980393,0.47843137254901963,0,1],[0.9607843137254902,0.48627450980392156,0,1],[0.9607843137254902,0.4980392156862745,0,1],[0.9607843137254902,0.5098039215686274,0,1],[0.9647058823529412,0.5215686274509804,0,1],[0.9647058823529412,0.5294117647058824,0,1],[0.9647058823529412,0.5411764705882353,0,1],[0.9686274509803922,0.5529411764705883,0,1],[0.9686274509803922,0.5647058823529412,0,1],[0.9686274509803922,0.5725490196078431,0,1],[0.9725490196078431,0.5843137254901961,0,1],[0.9725490196078431,0.596078431372549,0,1],[0.9725490196078431,0.6078431372549019,0,1],[0.9764705882352941,0.6196078431372549,0,1],[0.9764705882352941,0.6274509803921569,0,1],[0.9764705882352941,0.6392156862745098,0,1],[0.9803921568627451,0.6509803921568628,0,1],[0.9803921568627451,0.6627450980392157,0,1],[0.9803921568627451,0.6705882352941176,0,1],[0.984313725490196,0.6823529411764706,0,1],[0.984313725490196,0.6941176470588235,0,1],[0.984313725490196,0.7058823529411765,0,1],[0.9882352941176471,0.7137254901960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/*
var _colorMap = [];
for (var _i = 0; _i < 256; _i++) {
var val = (255 - _i) / 256;
_colorMap.push([val, val, val, 1]);
}
*/
var height = this.height;
var heightFactor = 1;
var pixels = resample2(frequencies);
var i;
var j;
//debugger;
this.canvases.forEach(function (entry) {
var ll = 0;
if (pixels[0]) { ll = pixels[0].length - 1; }
// console.log ('ooo ', q.width, height, ll );
if (!q.imagedata) {
q.imagedata = entry.waveCtx.createImageData(q.width, height);
}
for (i = 0; i < pixels.length; i++) {
for (j = 0; j < pixels[i].length; j++) {
var colorMap = _colorMap[pixels[i][j]];
var pixelindex = ((ll - j) * q.width + i) * 4;
q.imagedata.data[pixelindex] = colorMap[0] * 255;
q.imagedata.data[pixelindex+1] = colorMap[1] * 255;
q.imagedata.data[pixelindex+2] = colorMap[2] * 255;
q.imagedata.data[pixelindex+3] = colorMap[3] * 255;
//entry.waveCtx.fillStyle = 'rgba(' + colorMap[0] * 256 + ', ' + colorMap[1] * 256 + ', ' + colorMap[2] * 256 + ',' + colorMap[3] + ')';
//entry.waveCtx.fillStyle = 'rgb(' + colorMap[0] * 256 + ', ' + colorMap[1] * 256 + ', ' + colorMap[2] * 256 + ')';
//entry.waveCtx.fillRect(i, height - j * heightFactor, 1, heightFactor);
}
}
entry.waveCtx.putImageData(q.imagedata, 0, 0);
});
/*
var spectrCc = my.spectrCc;
var height = my.height;
var pixels = my.resample(frequenciesData);
var heightFactor = my.buffer ? 2 / my.buffer.numberOfChannels : 1;
var i;
var j;
for (i = 0; i < pixels.length; i++) {
for (j = 0; j < pixels[i].length; j++) {
var colorMap = my.colorMap[pixels[i][j]];
my.spectrCc.fillStyle = 'rgba(' + colorMap[0] * 256 + ', ' + colorMap[1] * 256 + ', ' + colorMap[2] * 256 + ',' + colorMap[3] + ')';
my.spectrCc.fillRect(i, height - j * heightFactor, 1, heightFactor);
}
}
*/
}
/**
* Scroll to the beginning
*/
}, {
key: 'resetScroll',
value: function resetScroll() {
if (this.wrapper !== null) {
this.wrapper.scrollLeft = 0;
}
}
/**
* Recenter the viewport 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 viewport 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) {
// we'll limit the "re-center" rate.
var rate = 5;
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}
*/
}, {
key: 'getScrollX',
value: function getScrollX() {
var pixelRatio = this.params.pixelRatio;
var 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}
*/
}, {
key: 'getWidth',
value: function getWidth() {
return this._width;
//return this.width;
//return Math.round(this.container.clientWidth * this.params.pixelRatio);
}
/**
* Set the width of the container
*
* @param {number} width
*/
}, {
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 {
this.style(this.wrapper, {
width: ~~(this.width / this.params.pixelRatio) + 'px'
});
}
this.updateSize();
return true;
}
/**
* Set the height of the container
*
* @param {number} height
*/
}, {
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 renderered
*
* @param {number} progress From 0 to 1
*/
}, {
key: 'progress',
value: function progress(_progress, left_offset, zoom_factor) {
if (_progress == 0) {
this.updateProgress(-1);
return;
}
_progress = (_progress - left_offset) * zoom_factor;
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) {
// const newPos = ~~(this.wrapper.scrollWidth * progress);
// this.recenterOnPosition(newPos);
// }
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) {
this.container.removeChild(this.wrapper);
}
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[][]} 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[][]} 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 ***!
\***********************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = 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); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _drawer = __webpack_require__(/*! ./drawer */ "./src/drawer.js");
var _drawer2 = _interopRequireDefault(_drawer);
var _util = __webpack_require__(/*! ./util */ "./src/util/index.js");
var util = _interopRequireWildcard(_util);
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; 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 _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
/**
* @typedef {Object} CanvasEntry
* @private
* @property {HTMLElement} wave The wave node
* @property {CanvasRenderingContext2D} waveCtx The canvas rendering context
* @property {?HTMLElement} progress The progress wave node
* @property {?CanvasRenderingContext2D} progressCtx The progress wave canvas
* rendering context
* @property {?number} start Start of the area the canvas should render, between 0 and 1
* @property {?number} end End of the area the canvas should render, between 0 and 1
*/
/**
* MultiCanvas renderer for wavesurfer. Is currently the default and sole built
* in renderer.
*/
function formatTime( time, format ) {
var time_s = time >> 0;
var miliseconds = time - time_s;
if (time_s < 10)
time_s = '00:0' + time_s;
else if (time_s < 60)
time_s = '00:' + time_s;
else
{
var m = time_s / 60;
m = m >> 0;
var s = (time_s % 60);
time_s = ((m<10)?'0':'') + m + ':' + (s < 10 ? '0'+s : s);
}
if (format === 1) {
return time_s + ':' + (miliseconds+'').substr(2, 2);
// return time_s + ':' + (miliseconds.toFixed(2)+'').substr(2);
}
return time_s; // + ':' + (miliseconds.toFixed(2)+'').substr(2);
}
var MultiCanvas = function (_Drawer) {
_inherits(MultiCanvas, _Drawer);
/**
* @param {HTMLElement} container The container node of the wavesurfer instance
* @param {WavesurferParams} params The wavesurfer initialisation options
*/
function MultiCanvas(container, params) {
_classCallCheck(this, MultiCanvas);
/**
* @type {number}
* @private
*/
var _this = _possibleConstructorReturn(this, (MultiCanvas.__proto__ || Object.getPrototypeOf(MultiCanvas)).call(this, container, params));
_this.maxCanvasWidth = params.maxCanvasWidth;
/**
* @private
* @type {number}
*/
_this.maxCanvasElementWidth = Math.round(params.maxCanvasWidth / params.pixelRatio);
/**
* Whether or not the progress wave is renderered. If the `waveColor`
* and `progressColor` are the same colour it is not.
* @type {boolean}
*/
_this.hasProgressCanvas = false; //params.waveColor != params.progressColor;
/**
* @private
* @type {number}
*/
_this.halfPixel = 0.5 / params.pixelRatio;
/**
* @private
* @type {Array}
*/
_this.canvases = [];
/** @private */
_this.progressWave = null;
_this.CursorMarker = null;
return _this;
}
/**
* Initialise the drawer
*/
_createClass(MultiCanvas, [{
key: 'init',
value: function init() {
this.createWrapper();
this.createElements();
}
/**
* Create the canvas elements and style them
*
* @private
*/
}, {
key: 'createElements',
value: function createElements() {
this.progressWave = this.wrapper.appendChild(this.style(document.createElement('wave'), {
/* position: 'absolute',
zIndex: 3,
left: 0,
top: 0,
bottom: 0,
overflow: 'hidden',
width: '0',
display: 'none',
boxSizing: 'border-box',
borderRightStyle: 'solid',
pointerEvents: 'none'
*/
}));
this.progressWave.id = 'pk_prgwv';
this.addCanvas();
//this.ZMarker = document.querySelector('.pk_wavepoint');
this.CursorMarker = document.createElement('div');
this.CursorMarker.className = 'pk_wave_cursor';
this.wrapper.appendChild(this.CursorMarker);
// this.updateCursor();
}
/**
* Update cursor style from params.
*/
}, {
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 = 1; // Math.ceil(totalWidth / this.maxCanvasElementWidth);
while (this.canvases.length < requiredCanvases) {
this.addCanvas();
}
while (this.canvases.length > requiredCanvases) {
this.removeCanvas();
}
this.canvases.forEach(function (entry, i) {
// Add some overlap to prevent vertical white stripes, keep the width even for simplicity.
var canvasWidth = _this2.maxCanvasWidth + 2 * Math.ceil(_this2.params.pixelRatio / 2);
if (i == _this2.canvases.length - 1) {
canvasWidth = _this2.width - _this2.maxCanvasWidth * (_this2.canvases.length - 1);
}
_this2.updateDimensions(entry, canvasWidth, _this2.height);
_this2.clearWaveForEntry(entry);
});
}
/**
* Add a canvas to the canvas list
*
* @private
*/
}, {
key: 'addCanvas',
value: function addCanvas() {
var entry = {};
var leftOffset = this.maxCanvasElementWidth * this.canvases.length;
entry.wave = this.wrapper.appendChild(this.style(document.createElement('canvas'), {
position: 'absolute',
zIndex: 2,
left: leftOffset + 'px',
top: 0,
bottom: 0,
height: '100%',
pointerEvents: 'none'
}));
entry.waveCtx = entry.wave.getContext('2d', {alpha:false, antialias:false});
entry.waveCtx.font = "12px Arial lighter";
// entry.waveCtx.textAlign = "center";
if (this.hasProgressCanvas) {
entry.progress = this.progressWave.appendChild(this.style(document.createElement('canvas'), {
position: 'absolute',
left: leftOffset + 'px',
top: 0,
bottom: 0,
height: '100%'
}));
entry.progressCtx = entry.progress.getContext('2d', {alpha:false, antialias:false});
}
this.canvases.push(entry);
}
/**
* Pop one canvas from the list
*
* @private
*/
}, {
key: 'removeCanvas',
value: function removeCanvas() {
var lastEntry = this.canvases.pop();
lastEntry.wave.parentElement.removeChild(lastEntry.wave);
if (this.hasProgressCanvas) {
lastEntry.progress.parentElement.removeChild(lastEntry.progress);
}
}
/**
* Update the dimensions of a canvas element
*
* @private
* @param {CanvasEntry} 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);
// Where the canvas starts and ends in the waveform, represented as a decimal between 0 and 1.
entry.start = entry.waveCtx.canvas.offsetLeft / totalWidth || 0;
entry.end = entry.start + elementWidth / totalWidth;
entry.waveCtx.canvas.width = width;
entry.waveCtx.canvas.height = height;
this.style(entry.waveCtx.canvas, { width: elementWidth + 'px' });
this.style(this.progressWave, { display: 'block' });
if (this.hasProgressCanvas) {
entry.progressCtx.canvas.width = width;
entry.progressCtx.canvas.height = height;
this.style(entry.progressCtx.canvas, {
width: elementWidth + 'px'
});
}
}
/**
* Clear the whole waveform
*/
}, {
key: 'clearWave',
value: function clearWave() {
var _this3 = this;
this.canvases.forEach(function (entry) {
return _this3.clearWaveForEntry(entry);
});
}
/**
* Clear one canvas
*
* @private
* @param {CanvasEntry} entry
*/
}, {
key: 'clearWaveForEntry',
value: function clearWaveForEntry(entry) {
this.shiftClear = true;
entry.waveCtx.fillStyle = "#000";
entry.waveCtx.fillRect(0, 0, entry.waveCtx.canvas.width, entry.waveCtx.canvas.height);
entry.waveCtx.fillStyle = "#99c2c6";
// entry.waveCtx.clearRect(0, 0, entry.waveCtx.canvas.width, entry.waveCtx.canvas.height);
// if (this.hasProgressCanvas) {
// entry.progressCtx.clearRect(0, 0, entry.progressCtx.canvas.width, entry.progressCtx.canvas.height);
// }
}
/**
* Draw a waveform with bars
*
* @param {number[]|number[][]} 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
*/
}, {
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;
if (_this4.params.timeline)
{
offsetY += 20;
halfH -= 10;
}
// 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 = void 0;
for (i = first; i < last; i += step) {
var peak = peaks[Math.floor(i * scale * peakIndexScale)] || 0;
var h = Math.round(peak / absmax * halfH);
_this4.fillRect(i + _this4.halfPixel, halfH - h + offsetY, bar + _this4.halfPixel, h * 2);
}
});
}
/**
* Draw a waveform
*
* @param {number[]|number[][]} 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
*/
}, {
key: 'drawWave',
value: function drawWave(peaks, channelIndex, start, end, totalChannels) {
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;
if (_this5.params.timeline)
{
offsetY += 20;
halfH -= 10;
}
if (!hasMinVals) {
var reflectedPeaks = [];
var len = peaks.length;
var i = void 0;
for (i = 0; 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(_this5.params.limits, _this5.params.timeline, peaks, absmax, halfH, offsetY, start, end);
}
// Always draw a median line
_this5.fillRect(0, halfH + offsetY - _this5.halfPixel, _this5.width, _this5.halfPixel, _this5.params.timeline ? 10 : 0);
}, totalChannels);
}
/**
* Tell the canvas entries to render their portion of the waveform
*
* @private
* @param {number[]} peaks Peak 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: 'drawLine',
value: function drawLine(lim, timeline, peaks, absmax, halfH, offsetY, start, end) {
var _this6 = this;
this.canvases.forEach(function (entry) {
// _this6.setFillStyles(entry);
_this6.drawLineToContext(lim, timeline, entry, entry.waveCtx, peaks, absmax, halfH, offsetY, start, end);
/*this.drawLineToContext(
entry,
entry.progressCtx,
peaks,
absmax,
halfH,
offsetY,
start,
end
)*/
});
}
/**
* Render the actual waveform line on a canvas
*
* @private
* @param {CanvasEntry} entry
* @param {Canvas2DContextAttributes} ctx Essentially `entry.[wave|progress]Ctx`
* @param {number[]} peaks
* @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 (lim, timeline, entry, ctx, peaks, absmax, halfH, offsetY, start, end) {
if (!ctx) {
return;
}
// halfH -= 60;
var length = peaks.length / 2;
var scale = this.params.fillParent && this.width != length ? this.width / length : 1;
var first = Math.round(length * entry.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 * entry.end) + 1;
if (first > end || last < start) {
return;
}
var canvasStart = Math.min(first, start);
var canvasEnd = Math.max(last, end);
var i = void 0;
var j = void 0;
//if (isNaN(canvasEnd))
//{
// return ;
//}
// if (this.shift === 999999999 && !this.shiftClear)
// {
// return ;
// }
ctx.beginPath();
ctx.moveTo((canvasStart - first) * scale + this.halfPixel, halfH + offsetY);
var chan_index = 0;
if (offsetY > 30) {
chan_index = 1;
}
//halfH -= 10;
// check if channel is active
if (!this.params.ActiveChannels [ chan_index ])
{
ctx.fillStyle = this.params.waveDisabledColor;
}
else
{
ctx.fillStyle = this.params.waveColor;
}
//var fastround = function ( num ) {
// return (num + 0.5) << 0;
//};
// var foo = Date.now();
var temp_end = canvasEnd;
if (peaks.length <= temp_end * 2)
{
temp_end = (peaks.length / 2) >> 0;
}
for (i = canvasStart; i < temp_end; ++i) {
var peak = peaks[2 * i];
var h = Math.round (peak / absmax * halfH);
//if (halfH < h ) {
// h = halfH;
//}
h = Math.min (h, halfH);
ctx.lineTo((i - first) * scale + this.halfPixel, halfH - h + offsetY);
}
// console.log( temp_end - canvasStart );
// console.log( Date.now() - foo );
// Draw the bottom edge going backwards, to make a single
// closed hull to fill.
//temp_end = canvasEnd;
//if (peaks.length <= temp_end * 2)
// {
// temp_end = (peaks.length / 2) >> 0;
// }
for (j = temp_end - 1; j >= canvasStart; --j) {
var _peak = peaks[2 * j + 1];
var _h = Math.round (_peak / absmax * halfH);
_h = Math.max (_h, -halfH);
ctx.lineTo((j - first) * scale + this.halfPixel, halfH - _h + offsetY);
}
ctx.closePath();
ctx.fill();
if (lim)
{
// use absmax for proper rendering of the limits....
ctx.fillStyle = '#fff';
var margin = (halfH * 10) / 100 >> 0;
var diff = (1.0 / absmax * halfH) - halfH;
var val = (margin + offsetY) - diff;
if (val > offsetY)
ctx.fillRect (0, val, this.width, 0.5);
val = (halfH * 2 - margin + offsetY) + diff;
if (val < (halfH * 2 + offsetY))
ctx.fillRect (0, val, this.width, 0.5);
ctx.fillStyle = this.params.waveColor;
}
if (timeline)
{
ctx.fillStyle = '#fff';
// draw ruler
var durr = PKAudioEditor.engine.wavesurfer.VisibleDuration;
var offs = PKAudioEditor.engine.wavesurfer.LeftProgress;
var total = PKAudioEditor.engine.wavesurfer.getDuration();
var zoom = PKAudioEditor.engine.wavesurfer.ZoomFactor;
var width = PKAudioEditor.engine.wavesurfer.drawer.width;
if (zoom >= 1)
{
width *= zoom;
var percentage = offs / total;
var left_offset = (percentage * width);
//var left = 0;
//var data = [];
var x = 0;
var pixel_distance = (width / total);
//ctx.font = "12px Arial lighter";
ctx.textAlign = 'center';
ctx.fillStyle = '#111';
ctx.fillRect(0, 0, this.width, 24);
ctx.fillStyle = '#aaa';
ctx.strokeStyle = '#aaa';
// every 60 pixels put something
// console.log( pixel_distance );
if (pixel_distance < 60) {
pixel_distance = 60;
}
else if (pixel_distance > 160)
{
pixel_distance /= ((pixel_distance / 160) >> 0) + 1;
}
var elements = width / pixel_distance;
var previous_time = 0;
for (var i = 0; i < (total*10); ++i)
{
if (x - left_offset > width - 2)
{
break;
}
if (x - left_offset >= -2 && x - left_offset < width - 2)
{
var prc = x / width;
var timespot = prc * total;
var format = 3;
var diff = timespot - previous_time;
if (diff < 1.0)
{
format = 1;
}
else if (diff < 60)
{
format = 2;
}
previous_time = timespot;
ctx.fillText( formatTime (timespot, format), x - left_offset, 12);
}
x += pixel_distance;
}
ctx.beginPath(); // Start a new path
x = 0;
for (var i = 0; i < (total*10); ++i)
{
if (x - left_offset > width - 2)
{
break;
}
if (x - left_offset >= -2 && x - left_offset < width - 2)
{
ctx.moveTo(x - left_offset, 16); // Move the pen to (30, 50)
ctx.lineTo(x - left_offset, 24); // Draw a line to (150, 100)
}
x += pixel_distance;
}
x = pixel_distance / 2;
for (var i = 0; i < (total*10); ++i)
{
if (x - left_offset > width - 2)
{
break;
}
if (x - left_offset >= -2 && x - left_offset < width - 2)
{
ctx.moveTo(x - left_offset, 19); // Move the pen to (30, 50)
ctx.lineTo(x - left_offset, 24); // Draw a line to (150, 100)
}
x += pixel_distance;
}
ctx.stroke();
}
}
this.RCB && this.RCB();
ctx.fillStyle = this.params.waveColor;
// this.shiftClear = false;
// ----
}
/**
* Draw a rectangle on the waveform
*
* @param {number} x
* @param {number} y
* @param {number} width
* @param {number} height
*/
}, {
key: 'fillRect',
value: function fillRect(x, y, width, height, extra) {
var startCanvas = Math.floor(x / this.maxCanvasWidth);
var endCanvas = Math.min(Math.ceil((x + width) / this.maxCanvasWidth) + 1, this.canvases.length);
var i = void 0;
var once = false;
for (i = startCanvas; 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.waveCtx.canvas.width),
y2: y + height
};
if (intersection.x1 < intersection.x2) {
this.setFillStyles(entry);
if (!once) {
this.fillRectToContext(entry.waveCtx, 0, this.height / 2 + extra, this.width, 0.25);
once = true;
}
this.fillRectToContext(entry.waveCtx, intersection.x1 - leftOffset, intersection.y1, intersection.x2 - intersection.x1, intersection.y2 - intersection.y1);
/*this.fillRectToContext(
entry.progressCtx,
intersection.x1 - leftOffset,
intersection.y1,
intersection.x2 - intersection.x1,
intersection.y2 - intersection.y1
);*/
}
}
}
/**
* Performs preparation tasks and calculations which are shared by drawBars and drawWave
*
* @private
* @param {number[]|number[][]} 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
*/
}, {
key: 'prepareDraw',
value: function prepareDraw (peaks, channelIndex, start, end, fn, totalChannels) {
var _this7 = this;
return function () {
// Split channels and call this function with the channelIndex set
if (peaks[0] instanceof Array) {
var channels = peaks;
if (_this7.params.splitChannels) {
_this7.setHeight(
// channels.length *
_this7.params.height * _this7.params.pixelRatio);
return channels.forEach(function (channelPeaks, i) {
return _this7.prepareDraw(channelPeaks, i, start, end, fn, totalChannels);
});
}
peaks = channels[0];
}
// 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;
absmax *= _this7.params.verticalZoom;
if (_this7.params.normalize) {
var max = util.max(peaks);
var min = util.min(peaks);
absmax = -min > max ? -min : max;
}
// 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 / 2 * _this7.params.pixelRatio;
var offsetY = height * channelIndex || 0;
var halfH = height / 2;
if (totalChannels === 1)
halfH = height;
return fn({
absmax: absmax,
hasMinVals: hasMinVals,
height: height,
offsetY: offsetY,
halfH: halfH,
peaks: peaks
});
}();
}
/**
* Draw the actual rectangle on a canvas
*
* @private
* @param {Canvas2DContextAttributes} ctx
* @param {number} x
* @param {number} y
* @param {number} width
* @param {number} height
*/
}, {
key: 'fillRectToContext',
value: function fillRectToContext(ctx, x, y, width, height) {
if (!ctx) {
return;
}
ctx.fillRect(x, y, width, height);
}
/**
* Set the fill styles for a certain entry (wave and progress)
*
* @private
* @param {CanvasEntry} entry
*/
}, {
key: 'setFillStyles',
value: function setFillStyles(entry) {
entry.waveCtx.fillStyle = this.params.waveColor;
if (this.hasProgressCanvas) {
entry.progressCtx.fillStyle = this.params.progressColor;
}
}
/**
* Return image data of the waveform
*
* @param {string} type='image/png' An optional value of a format type.
* @param {number} quality=0.92 An optional value between 0 and 1.
* @return {string|string[]} images A data URL or an array of data URLs
*/
}, {
key: 'getImage',
value: function getImage(type, quality) {
var images = this.canvases.map(function (entry) {
return entry.wave.toDataURL(type, quality);
});
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.progressWave.style.left = position + 'px';
this.progressWave.style.transform = 'translate3d(' + position + 'px,0,0)';
// this.style(this.progressWave, { left: position + 'px' });
}
}]);
return MultiCanvas;
}(_drawer2.default);
exports.default = MultiCanvas;
module.exports = exports['default'];
/***/ }),
/***/ "./src/mediaelement.js":
/*!*****************************!*\
!*** ./src/mediaelement.js ***!
\*****************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = 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); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };
var _webaudio = __webpack_require__(/*! ./webaudio */ "./src/webaudio.js");
var _webaudio2 = _interopRequireDefault(_webaudio);
var _util = __webpack_require__(/*! ./util */ "./src/util/index.js");
var util = _interopRequireWildcard(_util);
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; 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 _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
/**
* MediaElement backend
*/
var MediaElement = function (_WebAudio) {
_inherits(MediaElement, _WebAudio);
/**
* Construct the backend
*
* @param {WavesurferParams} params
*/
function MediaElement(params) {
_classCallCheck(this, MediaElement);
/** @private */
var _this = _possibleConstructorReturn(this, (MediaElement.__proto__ || Object.getPrototypeOf(MediaElement)).call(this, params));
_this.params = params;
// Dummy media to catch errors
/** @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.buffer = null;
/** @private */
_this.onPlayEnd = null;
return _this;
}
/**
* Initialise the backend, called in `wavesurfer.createBackend()`
*/
_createClass(MediaElement, [{
key: 'init',
value: function init() {
this.setPlaybackRate(this.params.audioRate);
this.createTimer();
}
/**
* Create a timer to provide a more precise `audioprocess` event.
*
* @private
*/
}, {
key: 'createTimer',
value: function createTimer() {
var _this2 = this;
var onAudioProcess = function onAudioProcess() {
// console.log(" audio process 1111 ####");
if (_this2.isPaused()) {
return;
}
// debugger;
_this2.fireEvent('audioprocess', _this2.getCurrentTime());
// Call again in the next frame
var requestAnimationFrame = window.requestAnimationFrame || window.webkitRequestAnimationFrame;
requestAnimationFrame(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 () {
// debugger;
_this2.fireEvent('audioprocess', _this2.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[][]} peaks Array of peak data
* @param {string} preload HTML 5 preload attribute value
*/
}, {
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);
}
/**
* Load existing media element.
*
* @param {HTMLMediaElement} elt HTML5 Audio or Video element
* @param {number[]|number[][]} 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);
}
/**
* Private method called by both load (from url)
* and loadElt (existing media element).
*
* @param {HTMLMediaElement} media HTML5 Audio or Video element
* @param {number[]|number[][]} peaks Array of peak data
* @private
*/
}, {
key: '_load',
value: function _load(media, peaks) {
var _this3 = this;
// load must be called manually on iOS, otherwise peaks won't draw
// until a user interaction triggers load --> 'ready' event
if (typeof media.load == 'function') {
// 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();
}
media.addEventListener('error', function () {
_this3.fireEvent('error', 'Error loading media element');
});
media.addEventListener('canplay', function () {
_this3.fireEvent('canplay');
});
media.addEventListener('ended', function () {
_this3.fireEvent('finish');
});
// Listen to and relay play and pause events to enable
// playback control from the external media element
media.addEventListener('play', function () {
_this3.fireEvent('play');
});
media.addEventListener('pause', function () {
_this3.fireEvent('pause');
});
this.media = media;
this.peaks = peaks;
this.onPlayEnd = null;
this.buffer = null;
this.setPlaybackRate(this.playbackRate);
this.setVolume(this.volume);
}
/**
* Used by `wavesurfer.isPlaying()` and `wavesurfer.playPause()`
*
* @return {boolean}
*/
}, {
key: 'isPaused',
value: function isPaused() {
return !this.media || this.media.paused;
}
/**
* Used by `wavesurfer.getDuration()`
*
* @return {number}
*/
}, {
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 audioclip's
* duration.
*
* @return {number}
*/
}, {
key: 'getCurrentTime',
value: function getCurrentTime() {
return this.media && this.media.currentTime;
}
/**
* Get the position from 0 to 1
*
* @return {number}
*/
}, {
key: 'getPlayedPercents',
value: function getPlayedPercents() {
return this.getCurrentTime() / this.getDuration() || 0;
}
/**
* Get the audio source playback rate.
*
* @return {number}
*/
}, {
key: 'getPlaybackRate',
value: function getPlaybackRate() {
return this.playbackRate || this.media.playbackRate;
}
/**
* Set the audio source playback rate.
*
* @param {number} value
*/
}, {
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}
*/
}, {
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}
*/
}, {
key: 'pause',
value: function pause() {
var promise = void 0;
if (this.media) {
promise = this.media.pause();
}
this.clearPlayEnd();
return promise;
}
/** @private */
}, {
key: 'setPlayEnd',
value: function setPlayEnd(end) {
var _this4 = this;
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 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(MediaElement.prototype.__proto__ || Object.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.
*/
}, {
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 || this.media.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;
this.media.volume = this.volume;
}
/**
* This is called when wavesurfer is destroyed
*
*/
}, {
key: 'destroy',
value: function destroy() {
this.pause();
this.unAll();
if (this.params.removeMediaElementOnDestroy && this.media && this.media.parentNode) {
this.media.parentNode.removeChild(this.media);
}
this.media = null;
}
}]);
return MediaElement;
}(_webaudio2.default);
exports.default = MediaElement;
module.exports = exports['default'];
/***/ }),
/***/ "./src/peakcache.js":
/*!**************************!*\
!*** ./src/peakcache.js ***!
\**************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = 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); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
/**
* Caches the decoded peaks data to improve rendering speed for lage audio
*
* Is used if the option parameter `partialRender` is set to `true`
*/
var PeakCache = 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[][]}
*/
}, {
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[][]}
*/
}, {
key: "getCacheRanges",
value: function getCacheRanges() {
var peakCacheRangePairs = [];
var i = void 0;
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/ajax.js":
/*!**************************!*\
!*** ./src/util/ajax.js ***!
\**************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = ajax;
var _observer = __webpack_require__(/*! ./observer */ "./src/util/observer.js");
var _observer2 = _interopRequireDefault(_observer);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Perform an ajax request
*
* @param {Options} options Description
*
* @returns {Object} Observer instance
*/
function ajax(options) {
var instance = new _observer2.default();
var xhr = new XMLHttpRequest();
var fired100 = false;
xhr.open(options.method || 'GET', options.url, true);
xhr.responseType = options.responseType || 'json';
if (options.xhr) {
if (options.xhr.requestHeaders) {
// add custom request headers
options.xhr.requestHeaders.forEach(function (header) {
xhr.setRequestHeader(header.key, header.value);
});
}
if (options.xhr.withCredentials) {
// use credentials
xhr.withCredentials = true;
}
}
xhr.addEventListener('progress', function (e) {
instance.fireEvent('progress', e);
if (e.lengthComputable && e.loaded == e.total) {
fired100 = true;
}
});
xhr.addEventListener('load', function (e) {
if (!fired100) {
instance.fireEvent('progress', e);
}
instance.fireEvent('load', e);
if (200 == xhr.status || 206 == xhr.status) {
instance.fireEvent('success', xhr.response, e);
} else {
instance.fireEvent('error', e);
}
});
xhr.addEventListener('error', function (e) {
return instance.fireEvent('error', e);
});
xhr.send();
instance.xhr = xhr;
return instance;
}
module.exports = exports['default'];
/***/ }),
/***/ "./src/util/extend.js":
/*!****************************!*\
!*** ./src/util/extend.js ***!
\****************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = extend;
/**
* Extend an object shallowly with others
*
* @param {Object} dest The target object
* @param {Object[]} sources The objects to use for extending
*
* @return {Object} Merged object
*/
function extend(dest) {
for (var _len = arguments.length, sources = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
sources[_key - 1] = arguments[_key];
}
sources.forEach(function (source) {
Object.keys(source).forEach(function (key) {
dest[key] = source[key];
});
});
return dest;
}
module.exports = exports["default"];
/***/ }),
/***/ "./src/util/frame.js":
/*!***************************!*\
!*** ./src/util/frame.js ***!
\***************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
/***/ }),
/***/ "./src/util/get-id.js":
/*!****************************!*\
!*** ./src/util/get-id.js ***!
\****************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = getId;
/**
* Get a random prefixed ID
*
* @returns {String} Random ID
*/
function getId() {
return 'wavesurfer_' + Math.random().toString(32).substring(2);
}
module.exports = exports['default'];
/***/ }),
/***/ "./src/util/index.js":
/*!***************************!*\
!*** ./src/util/index.js ***!
\***************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var _ajax = __webpack_require__(/*! ./ajax */ "./src/util/ajax.js");
Object.defineProperty(exports, 'ajax', {
enumerable: true,
get: function get() {
return _interopRequireDefault(_ajax).default;
}
});
var _getId = __webpack_require__(/*! ./get-id */ "./src/util/get-id.js");
Object.defineProperty(exports, 'getId', {
enumerable: true,
get: function get() {
return _interopRequireDefault(_getId).default;
}
});
var _max = __webpack_require__(/*! ./max */ "./src/util/max.js");
Object.defineProperty(exports, 'max', {
enumerable: true,
get: function get() {
return _interopRequireDefault(_max).default;
}
});
var _min = __webpack_require__(/*! ./min */ "./src/util/min.js");
Object.defineProperty(exports, 'min', {
enumerable: true,
get: function get() {
return _interopRequireDefault(_min).default;
}
});
var _observer = __webpack_require__(/*! ./observer */ "./src/util/observer.js");
Object.defineProperty(exports, 'Observer', {
enumerable: true,
get: function get() {
return _interopRequireDefault(_observer).default;
}
});
var _extend = __webpack_require__(/*! ./extend */ "./src/util/extend.js");
Object.defineProperty(exports, 'extend', {
enumerable: true,
get: function get() {
return _interopRequireDefault(_extend).default;
}
});
var _style = __webpack_require__(/*! ./style */ "./src/util/style.js");
Object.defineProperty(exports, 'style', {
enumerable: true,
get: function get() {
return _interopRequireDefault(_style).default;
}
});
var _requestAnimationFrame = __webpack_require__(/*! ./request-animation-frame */ "./src/util/request-animation-frame.js");
Object.defineProperty(exports, 'requestAnimationFrame', {
enumerable: true,
get: function get() {
return _interopRequireDefault(_requestAnimationFrame).default;
}
});
var _frame = __webpack_require__(/*! ./frame */ "./src/util/frame.js");
Object.defineProperty(exports, 'frame', {
enumerable: true,
get: function get() {
return _interopRequireDefault(_frame).default;
}
});
var _debounce = __webpack_require__(/*! debounce */ "./node_modules/debounce/index.js");
Object.defineProperty(exports, 'debounce', {
enumerable: true,
get: function get() {
return _interopRequireDefault(_debounce).default;
}
});
var _preventClick = __webpack_require__(/*! ./prevent-click */ "./src/util/prevent-click.js");
Object.defineProperty(exports, 'preventClick', {
enumerable: true,
get: function get() {
return _interopRequireDefault(_preventClick).default;
}
});
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/***/ }),
/***/ "./src/util/max.js":
/*!*************************!*\
!*** ./src/util/max.js ***!
\*************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
"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
*/
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 ***!
\*************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
"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
*/
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 ***!
\******************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = 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); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
/**
* @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 = function () {
/**
* Instantiate Observer
*/
function Observer() {
_classCallCheck(this, Observer);
/**
* @private
* @todo Initialise the handlers here already and remove the conditional
* assignment in `on()`
*/
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}
*/
_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 = void 0;
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}
*/
}, {
key: "once",
value: function once(event, handler) {
var _this2 = this;
var fn = function fn() {
for (var _len = arguments.length, args = 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);
}
/**
* 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, a, s) {
//for (var _len2 = arguments.length, args = Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
// args[_key2 - 1] = arguments[_key2];
//}
if (!this.handlers) {
return;
}
var handlers = this.handlers[event];
handlers && handlers.forEach(function (fn) {
// fn.apply(undefined, args);
fn(a, s);
});
}
}]);
return Observer;
}();
exports.default = Observer;
module.exports = exports["default"];
/***/ }),
/***/ "./src/util/prevent-click.js":
/*!***********************************!*\
!*** ./src/util/prevent-click.js ***!
\***********************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = preventClick;
function preventClickHandler(e) {
e.stopPropagation();
document.body.removeEventListener('click', preventClickHandler, true);
}
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 ***!
\*********************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
/**
* Returns the requestAnimationFrame function for the browser, or a shim with
* setTimeout if none is found
*
* @return {function}
*/
exports.default = (window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame || function (callback, element) {
return setTimeout(callback, 1000 / 60);
}).bind(window);
module.exports = exports["default"];
/***/ }),
/***/ "./src/util/style.js":
/*!***************************!*\
!*** ./src/util/style.js ***!
\***************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
"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 ***!
\***************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = 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); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _util = __webpack_require__(/*! ./util */ "./src/util/index.js");
var util = _interopRequireWildcard(_util);
var _drawer = __webpack_require__(/*! ./drawer.multicanvas */ "./src/drawer.multicanvas.js");
var _drawer2 = _interopRequireDefault(_drawer);
var _webaudio = __webpack_require__(/*! ./webaudio */ "./src/webaudio.js");
var _webaudio2 = _interopRequireDefault(_webaudio);
var _mediaelement = __webpack_require__(/*! ./mediaelement */ "./src/mediaelement.js");
var _mediaelement2 = _interopRequireDefault(_mediaelement);
var _peakcache = __webpack_require__(/*! ./peakcache */ "./src/peakcache.js");
var _peakcache2 = _interopRequireDefault(_peakcache);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
/*
* 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 {boolean} autoCenter=true If a scrollbar is present, center the
* waveform around the progress
* @property {string} backend='WebAudio' `'WebAudio'|'MediaElement'` In most cases
* you don't have to set this manually. MediaElement is a fallback for
* unsupported browsers.
* @property {number} barHeight=1 The height of the wave
* @property {number} barGap=null The optional spacing between bars of the wave,
* if not provided will be calculated in legacy format.
* @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 {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`)
* this enables the native controls for the media element
* @property {string} mediaType='audio' (Use with backend `MediaElement`)
* `'audio'|'video'`
* @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.
* @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} 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 seperate waveforms for
* the channels of the audio
* @property {string} waveColor='#999' The fill color of the waveform after the
* cursor.
* @property {object} xhr={} XHR options.
*/
/**
* @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.
*/
/**
* @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 = function () {
_createClass(PluginClass, [{
key: 'create',
/**
* Plugin definition factory
*
* This function must be used to create a plugin definition which can be
* used by wavesurfer to correctly instantiate the plugin.
*
* @param {Object} params={} The plugin params (specific to the plugin)
* @return {PluginDefinition} an object representing the plugin
*/
value: function create(params) {}
/**
* Construct the plugin
*
* @param {Object} ws The wavesurfer instance
* @param {Object} params={} The plugin params (specific to the plugin)
*/
}]);
function PluginClass(ws, params) {
_classCallCheck(this, PluginClass);
}
/**
* Initialise the plugin
*
* Start doing something. This is called by
* `wavesurfer.initPlugin(pluginName)`
*/
_createClass(PluginClass, [{
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 = function (_util$Observer) {
_inherits(WaveSurfer, _util$Observer);
_createClass(WaveSurfer, null, [{
key: 'create',
/**
* Instantiate this class, call its `init` function and returns it
*
* @param {WavesurferParams} params
* @return {Object} WaveSurfer instance
* @example const wavesurfer = WaveSurfer.create(params);
*/
/** @private */
value: function create(params) {
var wavesurfer = new WaveSurfer(params);
return wavesurfer.init();
}
/**
* Functions in the `util` property are available as a prototype property to
* all instances
*
* @type {Object}
* @example
* const wavesurfer = WaveSurfer.create(params);
* wavesurfer.util.style(myElement, { background: 'blue' });
*/
/** @private */
/**
* Functions in the `util` property are available as a static property of the
* WaveSurfer class
*
* @type {Object}
* @example
* WaveSurfer.util.style(myElement, { background: 'blue' });
*/
}]);
/**
* Initialise wavesurfer instance
*
* @param {WavesurferParams} params Instantiation options for wavesurfer
* @example
* const wavesurfer = new WaveSurfer(params);
* @returns {this}
*/
function WaveSurfer(params) {
var _ret;
_classCallCheck(this, WaveSurfer);
/**
* Extract relevant parameters (or defaults)
* @private
*/
var _this = _possibleConstructorReturn(this, (WaveSurfer.__proto__ || Object.getPrototypeOf(WaveSurfer)).call(this));
_this.defaultParams = {
audioContext: null,
audioRate: 1,
autoCenter: true,
backend: 'WebAudio',
barHeight: 1,
barGap: null,
container: null,
cursorColor: '#ff8c35',
cursorWidth: 1,
dragSelection: true,
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: 'rgba(201,199,229,0.24)',
removeMediaElementOnDestroy: true,
renderer: _drawer2.default,
responsive: false,
scrollParent: false,
skipLength: 2,
splitChannels: false,
waveColor: '#99c2c6',
waveDisabledColor: '#505253',
xhr: {},
limits:1,
timeline:1,
verticalZoom:1
};
_this.backends = {
MediaElement: _mediaelement2.default,
WebAudio: _webaudio2.default
};
_this.util = util;
_this.params = util.extend({}, _this.defaultParams, params);
/** @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');
}
/**
* @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
* cancelled on subsequent loads of audio
* @type {Object[]}
*/
_this.tmpEvents = [];
/**
* @private Holds any running audio downloads
* @type {Observer}
*/
_this.currentAjax = null;
_this.bid = {};
/** @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
*/
_this.Backend = _this.backends[_this.params.backend];
/**
* @private map of plugin names that are currently initialised
*/
_this.initialisedPluginList = {};
/** @private */
_this.isDestroyed = false;
/** @private */
_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);
// non-active cursor (in seconds)
_this.ActiveMarker = 0;
_this.FollowCursor = 1;
_this.Interacting = 0;
// ####
_this.ActiveChannels = [1, 1];
_this.SelectedChannelsLen = 2;
// left offset -- where the left part of the screen points to (in seconds)
_this.LeftProgress = 0;
// zoom multiplier (1 = the whole waveform is visible on screen)
_this.ZoomFactor = 1;
// visible range (seconds)
_this.VisibleDuration = 0;
return _ret = _this, _possibleConstructorReturn(_this, _ret);
}
/**
* Initialise the wave
*
* @example
* var wavesurfer = new WaveSurfer(params);
* wavesurfer.init();
* @return {this}
*/
_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}
*/
}, {
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;
}
/**
* 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}
*/
}, {
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 ' + 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}
*/
}, {
key: 'initPlugin',
value: function initPlugin(name) {
if (!this[name]) {
throw new Error('Plugin ' + 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}
*/
}, {
key: 'destroyPlugin',
value: function destroyPlugin(name) {
if (!this[name]) {
throw new Error('Plugin ' + name + ' has not been added yet and cannot be destroyed!');
}
if (!this.initialisedPluginList[name]) {
throw new Error('Plugin ' + name + ' is not active and cannot be destroyed!');
}
if (typeof this[name].destroy !== 'function') {
throw new Error('Plugin ' + 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.params.ActiveChannels = this.ActiveChannels;
this.drawer = new this.Drawer(this.container, this.params);
this.drawer.init();
this.fireEvent('drawer-created', this.drawer);
this.drawer.on('resize', function() {
//console.log (_this5.drawer._width);
_this5.drawer._width = Math.round(_this5.drawer.container.clientWidth * _this5.drawer.params.pixelRatio);
_this5.drawer._bbox = _this5.drawer.wrapper.getBoundingClientRect();
//console.log (_this5.drawer._width);
});
this.on ('resize', function (){
_this5.drawer.fireEvent('resize');
});
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(), _this5.LeftProgress / _this5.getDuration(), _this5.ZoomFactor);
});
// Click-to-seek
// if there are touch events available add on touchdown-touchup being close
if ('ontouchstart' in document.documentElement)
{
var touch_pos = {x:0,y:0};
var last_touch_pos = {x:0,y:0};
this.drawer.on('touchstart', function (e) {
if (e.touches && e.touches.length === 1)
{
touch_pos = {
x: e.touches[0].pageX,
y: e.touches[0].pageY
};
}
});
this.drawer.on('touchmove', function (e) {
if (e.touches && e.touches.length === 1)
{
last_touch_pos = {
x: e.touches[0].pageX,
y: e.touches[0].pageY
};
}
});
this.drawer.on('touchend', function (e) {
if (touch_pos.x !== 0 && touch_pos.y !== 0)
{
if ( (last_touch_pos.x === 0 && last_touch_pos.y === 0)
|| (Math.abs (last_touch_pos.x - touch_pos.x) < 20 && Math.abs (last_touch_pos.y - touch_pos.y) < 20) )
{
setTimeout(function () {
var bbox = _this5.drawer._bbox; // _this5.drawer.wrapper.getBoundingClientRect();
var nominalWidth = _this5.drawer.width;
var parentWidth = _this5.drawer.getWidth();
var progress = 0;
var xx = touch_pos.x - (window.pageXOffset || document.documentElement.scrollLeft);
if (!_this5.drawer.params.fillParent && nominalWidth < parentWidth) {
progress = (xx - bbox.left) * _this5.drawer.params.pixelRatio;
progress = progress || 0;
if (progress > 1) {
progress = 1;
}
} else {
progress = (xx - bbox.left) / nominalWidth || 0;
}
var new_progress = (progress * _this5.VisibleDuration + _this5.LeftProgress) / _this5.getDuration();
if (new_progress >= 0 && new_progress <= 1)
_this5.seekTo (new_progress);
touch_pos = {x:0,y:0};
last_touch_pos = {x:0,y:0};
_this5.regions && _this5.regions.clear();
}, 24);
}
else
{
touch_pos = {x:0,y:0};
last_touch_pos = {x:0,y:0};
}
}
});
}
this.drawer.on('click', function (e, progress) {
var stamp = e.timeStamp;
setTimeout(function () {
var new_progress = (progress * _this5.VisibleDuration + _this5.LeftProgress) / _this5.getDuration();
if (new_progress >= 0 && new_progress <= 1)
_this5.seekTo (new_progress, stamp);
}, 36);
});
this.ResetZoom = function () {
_this5.ZoomFactor = 1;
_this5.LeftProgress = 0;
_this5.params.verticalZoom = 1;
_this5.ForceDraw ();
_this5.fireEvent ('DidZoom');
};
this.SetZoomVertical = function ( val, event ) {
var prev_v_zoom = _this5.params.verticalZoom;
if (_this5.params.verticalZoom < 0.1)
{
_this5.params.verticalZoom += val / 24;
}
else if (_this5.params.verticalZoom < 0.3)
{
_this5.params.verticalZoom += val / 20;
}
else if (_this5.params.verticalZoom < 0.5)
{
_this5.params.verticalZoom += val / 16;
}
else if (_this5.params.verticalZoom < 0.8)
{
_this5.params.verticalZoom += val / 12;
}
else if (_this5.params.verticalZoom < 1.0)
{
_this5.params.verticalZoom += val / 8;
}
else
{
_this5.params.verticalZoom += val / 4;
}
if (_this5.params.verticalZoom <= 0.1)
_this5.params.verticalZoom = 0.1;
if (prev_v_zoom < 1 && _this5.params.verticalZoom > 1)
{
_this5.params.verticalZoom = 1;
}
else if (prev_v_zoom > 1 && _this5.params.verticalZoom < 1)
{
_this5.params.verticalZoom = 1;
}
_this5.ForceDraw ();
_this5.fireEvent ('DidZoom', event);
};
this.SetZoom = function ( where, step, event, is_redo ) {
var redo = false;
var width = _this5.drawer.width;
var duration = _this5.VisibleDuration;
var last_ = width * (_this5.ZoomFactor - (step/Math.abs(step))) >> 0;
var sampleSize_ = _this5.backend.buffer.length / last_;
if (sampleSize_ < 1.0) {
return ;
}
if (!where) where = 0.5; // make "where" be the cursor? ####
if (step < 0) {
if (_this5.ZoomFactor != _this5.ZoomFactor >> 0) {
_this5.ZoomFactor = (_this5.ZoomFactor >> 0) + 1;
} else {
if (_this5.ZoomFactor > 6) _this5.ZoomFactor += 1;else _this5.ZoomFactor += 1;
}
// set the left offset in such a way that mouse position stays stable
_this5.LeftProgress = _this5.LeftProgress + where * (duration / _this5.ZoomFactor);
} else if (_this5.ZoomFactor > 1) {
if (_this5.ZoomFactor != _this5.ZoomFactor >> 0) {
_this5.ZoomFactor = _this5.ZoomFactor >> 0;
} else {
if (_this5.ZoomFactor > 6) {
if (!is_redo) redo = true;
_this5.ZoomFactor -= 1;
} else _this5.ZoomFactor -= 1;
}
if (_this5.ZoomFactor === 1) _this5.LeftProgress = 0;else _this5.LeftProgress = _this5.LeftProgress - where * (duration / _this5.ZoomFactor);
}
_this5.ForceDraw ();
_this5.fireEvent ('DidZoom', event);
if (redo)
{
this.SetZoom ( where, step, event, true );
}
};
var throttle_wheel = 0;
this.drawer.on('wheel', function (e) {
e.preventDefault();
e.stopPropagation();
if (!_this5.isReady || e.deltaY == 0) return;
var perf = e.timeStamp; // window.performance.now();
if (perf - throttle_wheel < 46) {
return;
}
throttle_wheel = perf;
var width = _this5.drawer.width;
var rect = _this5.drawer._bbox; // _this5.getWaveEl().getBoundingClientRect();
var where = (e.clientX - rect.left) / width;
_this5.SetZoom ( where, e.deltaY, e );
});
// Relay the scroll event from the drawer
this.drawer.on('scroll', function (e) {
if (_this5.params.partialRender) {
_this5.drawBuffer();
}
_this5.fireEvent('scroll', e);
});
}
}, {
key: 'ZoomifyValue',
value: function ZoomifyValue(progress) {
return (progress * this.VisibleDuration + this.LeftProgress) / this.getDuration();
}
}, {
key: 'UnZoomifyValue',
value: function UnZoomifyValue(progress) {
return (progress - this.LeftProgress) * this.ZoomFactor;
}
}, {
key: 'UnzoomifyPixelValue',
value: function UnzoomifyPixelValue(progress) {
return (progress - this.LeftProgress / this.getDuration() * this.drawer.width) * this.ZoomFactor;
}
}, {
key: 'DrawTemp',
value: function DrawTemp ( _offset, _arrays ) {
this.backend.extraPeaks = _arrays;
this.backend.extraOffset = _offset;
this.drawBuffer(1);
var percent = this.backend.getPlayedPercents();
var dur = this.getDuration();
var left_offset = this.LeftProgress / dur;
//var lleft = (this.ActiveMarker - left_offset) * this.ZoomFactor * 100;
//var sleft = lleft + '%';
//if (lleft === 0) sleft = '1px';
var ppp = (this.ActiveMarker - left_offset) * this.ZoomFactor;
var minPxDelta = 1 / this.drawer.params.pixelRatio;
var pos = Math.round(ppp * this.drawer.width) * minPxDelta;
//if (pos > -40) {
this.drawer.CursorMarker.style.transform = 'translate(' + pos + 'px,0)';
//}
// this.drawer.CursorMarker.style.left = sleft;
this.drawer.progress(percent, left_offset, this.ZoomFactor);
}
},
{
key: 'ForceDraw',
value: function ForceDraw() {
this.drawBuffer();
var percent = this.backend.getPlayedPercents();
var dur = this.getDuration();
var left_offset = this.LeftProgress / dur;
// var lleft = (this.ActiveMarker - left_offset) * this.ZoomFactor * 100;
// var sleft = lleft + '%';
// if (lleft === 0) sleft = '1px';
// this.drawer.CursorMarker.style.left = sleft;
var ppp = (this.ActiveMarker - left_offset) * this.ZoomFactor;
var minPxDelta = 1 / this.drawer.params.pixelRatio;
var pos = Math.round(ppp * this.drawer.width) * minPxDelta;
//if (pos > -40) {
this.drawer.CursorMarker.style.transform = 'translate(' + pos + 'px,0)';
//}
//this.drawer.CursorMarker.style.transform = 'translate(' + pos + 'px,0)';
// this.drawer.ZMarker.style.left = (this.ActiveMarker * 100) + '%';
this.drawer.progress(percent, left_offset, this.ZoomFactor);
}
/**
* Create the backend
*
* @private
* @emits WaveSurfer#backend-created
*/
}, {
key: 'getWaveEl',
value: function getWaveEl() {
return (this.drawer.canvases[0].wave);
}
}, {
key: 'createBackend',
value: function createBackend() {
var _this6 = this;
if (this.backend) {
this.backend.destroy();
}
// Back compat
if (this.params.backend == 'AudioElement') {
this.params.backend = 'MediaElement';
}
if (this.params.backend == 'WebAudio' && !this.Backend.prototype.supportsWebAudio.call(null)) {
this.params.backend = 'MediaElement';
}
this.backend = new this.Backend(this.params);
this.backend.init();
this.fireEvent('backend-created', this.backend);
this.backend.on('finish', function () {
return _this6.fireEvent('finish');
});
this.backend.on('play', function () {
return _this6.fireEvent('play');
});
this.backend.on('pause', function ( e ) {
if (e === 'end')
{
_this6.stop ();
}
return _this6.fireEvent('pause');
});
var q = this;
this.CursorCenter = function () {
var durr = q.getDuration();
var percentage = q.backend.getPlayedPercents();
var maxScroll = q.drawer.width * q.ZoomFactor;
var half = ~~(q.drawer.width / 2);
var real = percentage * maxScroll;
var target = real - half;
var left_middle = q.LeftProgress / durr * maxScroll + half >> 0;
if (left_middle + half > real && left_middle + half < maxScroll) {
var cursor = (percentage - q.LeftProgress / durr) * q.ZoomFactor * 100 >> 0;
if (cursor > 50) {
var x = target - left_middle + half;
target -= Math.max(0, x - 4 * q.ZoomFactor / 2);
} else target = Math.max(0, Math.min(maxScroll - half * 2, target));
} else target = Math.max(0, Math.min(maxScroll - half * 2, target));
var t = target / maxScroll;
q.LeftProgress = t * durr;
q.fireEvent ('cursorcenter', t);
if (!document.hidden) q.ForceDraw();
};
var db = 0;
var timing_gap = 50;
q.backend.on('audioprocess', function (time, stamp) {
var percentage = q.backend.getPlayedPercents();
if (q.ZoomFactor > 1 && q.FollowCursor && !q.Interacting)
{
var new_db = stamp; // window.performance.now(); // ####
if (new_db - db > timing_gap)
{
db = new_db;
var durr = q.getDuration();
var maxScroll = q.drawer.width * q.ZoomFactor;
var half = ~~(q.drawer.width / 2);
var real = percentage * maxScroll;
var target = real - half;
var left_middle = q.LeftProgress / durr * maxScroll + half >> 0;
if (left_middle <= real && real <= left_middle + half)
{
if (left_middle + half > real && left_middle + half < maxScroll) {
var cursor = (percentage - q.LeftProgress / durr) * q.ZoomFactor * 100 >> 0;
if (cursor > 99)
{
var x = target - left_middle + half;
target -= Math.max(0, x - 4 * q.ZoomFactor / 2);
} else target = Math.max(0, Math.min(maxScroll - half * 2, target));
} else target = Math.max(0, Math.min(maxScroll - half * 2, target));
var t = target / maxScroll;
q.LeftProgress = t * durr;
q.fireEvent('cursorcenter', t);
if (!document.hidden) q.ForceDraw();
}
else
{
q.drawer.progress(percentage, q.LeftProgress / q.getDuration(), q.ZoomFactor);
}
}
// -
}
else
{
q.drawer.progress(percentage, q.LeftProgress / q.getDuration(), q.ZoomFactor);
}
q.fireEvent ('audioprocess', time, stamp);
});
}
/**
* Create the peak cache
*
* @private
*/
}, {
key: 'createPeakCache',
value: function createPeakCache() {
if (this.params.partialRender) {
this.peakCache = new _peakcache2.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}
* @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);
}
/**
* Stops playback
*
* @example wavesurfer.pause();
* @return {Promise}
*/
}, {
key: 'pause',
value: function pause() {
if (!this.backend.isPaused()) {
return this.backend.pause();
}
}
/**
* Toggle playback
*
* @example wavesurfer.playPause();
* @return {Promise}
*/
}, {
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, stamp) {
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) {
progress = 0;
// return console.error('Error calling wavesurfer.seekTo, parameter must be a number between 0 and 1!');
}
this.ActiveMarker = progress;
this.fireEvent('interaction', function () {
return _this8.seekTo(progress);
});
var paused = this.backend.isPaused();
// avoid draw wrong position while playing backward seeking
if (!paused) {
this.backend.pause();
}
// avoid small scrolls while paused seeking
//const oldScrollParent = this.params.scrollParent;
//this.params.scrollParent = false;
var duration = this.getDuration();
if (this.VisibleDuration / duration + this.LeftProgress / duration > progress && progress > this.LeftProgress / duration) {
var left_offset = this.LeftProgress / duration;
// var rend_progress = (progress - left_offset) * (duration / this.VisibleDuration);
// this.drawer.CursorMarker.style.left = rend_progress * 100 + '%';
var ppp = (progress - left_offset) * this.ZoomFactor;
var minPxDelta = 1 / this.drawer.params.pixelRatio;
var pos = Math.round(ppp * this.drawer.width) * minPxDelta;
this.drawer.CursorMarker.style.transform = 'translate(' + pos + 'px,0)';
//var rend_progress2 = (progress - left_offset);
//this.drawer.ZMarker.style.left = progress * 100 + '%';
this.drawer.progress(progress, left_offset, this.ZoomFactor);
} else {
var left_offset = this.LeftProgress / duration;
var rend_progress = (progress - left_offset) * (duration / this.VisibleDuration);
if (rend_progress == 0)
{
this.drawer.CursorMarker.style.transform = 'translate(1px,0)';
// this.drawer.CursorMarker.style.left = '1px';
}
else
{
var ppp = (progress - left_offset) * this.ZoomFactor;
var minPxDelta = 1 / this.drawer.params.pixelRatio;
var pos = Math.round(ppp * this.drawer.width) * minPxDelta;
this.drawer.CursorMarker.style.transform = 'translate(' + pos + 'px,0)';
// this.drawer.CursorMarker.style.left = rend_progress * 100 + '%';
}
this.drawer.progress(0);
}
this.backend.seekTo(progress * this.getDuration());
if (!paused) {
this.backend.play();
}
//this.params.scrollParent = oldScrollParent;
this.fireEvent('seek', progress, stamp);
}
/**
* Stops and goes to the beginning.
*
* @example wavesurfer.stop();
*/
}, {
key: 'stop',
value: function stop() {
this.pause();
this.seekTo(this.ActiveMarker, window.performance.now() + 100);
this.drawer.progress(this.ActiveMarker, this.LeftProgress / this.getDuration(), this.ZoomFactor);
}
/**
* Set the playback volume.
*
* @param {string} deviceId String value representing underlying output device
*/
}, {
key: 'setSinkId',
value: function setSinkId(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();
}
}, {
key: 'getLoudness',
value: function getLoudness() {
return this.backend.getLoudness();
}
/**
* 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}
*/
}, {
key: 'getPlaybackRate',
value: function getPlaybackRate() {
return this.backend.getPlaybackRate();
}
/**
* Toggle the volume on and off. It not currenly 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
* @emits WaveSurfer#volume
* @emits WaveSurfer#mute
* @example
* // unmute
* wavesurfer.setMute(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 (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}
*/
}, {
key: 'getMute',
value: function getMute() {
return this.isMuted;
}
/**
* Get the current ready status.
*
* @example const isReady = wavesurfer.isReady();
* @return {boolean}
*/
}, {
key: 'isReady',
value: function isReady() {
return this.isReady;
}
/**
* Get the list of current set filters as an array.
*
* Filters must be set with setFilters method first
*
* @return {array}
*/
}, {
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 fill color of the cursor indicating the playhead
* position.
*
* @return {string} A CSS color string.
*/
},
{
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);
if (this.isReady) {
this.drawBuffer();
}
}
/**
* Get the correct peaks for current wave viewport and render wave
*
* @private
* @emits WaveSurfer#redraw
*/
}, {
key: 'drawBuffer',
value: function drawBuffer(force) {
// ####
if (this.ZoomFactor === 1) this.VisibleDuration = this.getDuration();else this.VisibleDuration = this.getDuration() / this.ZoomFactor;
var parentWidth = this.drawer.getWidth();
var width = parentWidth;
var start = this.LeftProgress;
var end = width * this.ZoomFactor >> 0;
var peaks = void 0;
//var spectre = void 0;
/*
if (true) // (this.Spectrogram)
{
if (!this.spectre)
{
var t0 = window.performance.now ();
this.spectre = this.backend.getSpectre(width, start, end, force, this.drawer);
console.log( "spectre freq: ", (window.performance.now () - t0));
}
var t1 = window.performance.now ();
this.drawer.drawSpectre(this.spectre, width, start, end, this.VisibleDuration,this.getDuration(), this.backend.buffer.sampleRate);
console.log( "spectre draw: ", (window.performance.now () - t1));
// this.fireEvent('redraw', peaks, width);
return ;
}
*/
// console.log( width, start, end );
peaks = this.backend.getPeaks(width, start, end, force);
this.drawer.drawPeaks(peaks, width, 0, end, peaks.length, this.backend.shift);
if (this.backend.extraPeakStart >= 0)
{
// draw red
var q = this;
requestAnimationFrame(function () {
q.drawer.canvases[0].waveCtx.fillStyle = 'rgba(255,60,40,0.2)';
q.drawer.canvases[0].waveCtx.fillRect (q.backend.extraPeakStart, 0, q.backend.extraPeakEnd-q.backend.extraPeakStart, q.drawer.canvases[0].wave.height);
});
}
// }
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) {
return;
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
*/
}, {
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
* @emits WaveSurfer#ready
*/
}, {
key: 'loadDecodedBuffer',
value: function loadDecodedBuffer(buffer) {
// #### be smarter check if song changed....
this.backend.splitPeaks = [];
this.backend.mergedPeaks = [];
this.createPeakCache();
this.backend.load(buffer);
this.drawBuffer(1);
this.fireEvent('ready');
this.isReady = true;
}
/**
* 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[][]} peaks Wavesurfer does not have to decode
* the audio to render the waveform if this is specified
* @param {?string} preload (Use with backend `MediaElement`)
* `'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.
* @example
* // using ajax or media element to load (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) {
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': this.params.backend !== 'MediaElement',
'Url is not of type string': typeof url !== 'string'
};
var activeReasons = Object.keys(preloadIgnoreReasons).filter(function (reason) {
return preloadIgnoreReasons[reason];
});
if (activeReasons.length) {
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;
}
}
switch (this.params.backend) {
case 'WebAudio':
return this.loadBuffer(url, peaks, duration);
case 'MediaElement':
return this.loadMediaElement(url, peaks, preload, duration);
}
}
/**
* Loads audio using Web Audio buffer backend.
*
* @private
* @param {string} url
* @param {?number[]|number[][]} peaks
* @param {?number} duration
*/
}, {
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(1);
this.tmpEvents.push(this.once('interaction', load));
} else {
return load();
}
}
/**
* Either create a media element, or load an existing media element.
*
* @private
* @param {string|HTMLMediaElement} urlOrElt Either a path to a media file, or an
* existing HTML5 Audio/Video Element
* @param {number[]|number[][]} 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
*/
}, {
key: 'loadMediaElement',
value: function loadMediaElement(urlOrElt, peaks, preload, duration) {
var _this12 = this;
// debugger;
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 () {
_this12.drawBuffer(1);
_this12.fireEvent('ready');
_this12.isReady = true;
}), this.backend.once('error', function (err) {
return _this12.fireEvent('error', err);
}));
// If no pre-decoded peaks provided or pre-decoded peaks are
// provided with forceDecode flag, attempt to download the
// audio file and decode it with Web Audio.
if (peaks) {
this.backend.setPeaks(peaks, duration);
}
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(1);
_this12.fireEvent('waveform-ready');
});
});
}
}
/**
* Decode an array buffer and pass data to a callback
*
* @private
* @param {Object} arraybuffer
* @param {function} callback
*/
}, {
key: 'decodeArrayBuffer',
value: function decodeArrayBuffer(arraybuffer, callback) {
var _this13 = this;
var _id = 'q'+((Math.random() * 999999) >> 0);
// this.arraybuffer = arraybuffer;
this.bid[_id] = 1;
this.bid['curr'] = _id;
var old_duration = this.getDuration ();
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)
{
if (_this13.bid[_id])
{
var go = false;
if (_this13.backend.buffer && _this13.backend._add)
{
go = true;
}
callback(data);
_this13.arraybuffer = arraybuffer;
if (go) // add the main area // todo - put it somewhere else?
{
setTimeout(function () {
_this13.regions.add({
start:old_duration,
end:_this13.getDuration () - 0.01,
id:'t'
});
},48);
}
// ---
}
}
}, function () {
return _this13.fireEvent('error', 'Error decoding audiobuffer. Did you make sure to supply a valid audio file? ');
});
}
/**
* Load an array buffer by ajax and pass to a callback
*
* @param {string} url
* @param {function} callback
* @private
*/
}, {
key: 'getArrayBuffer',
value: function getArrayBuffer(url, callback) {
var _this14 = this;
var ajax = util.ajax({
url: url,
responseType: 'arraybuffer',
xhr: this.params.xhr
});
this.currentAjax = ajax;
this.tmpEvents.push(ajax.on('progress', function (e) {
_this14.onProgress(e);
}), ajax.on('success', function (data, e) {
callback(data);
_this14.currentAjax = null;
}), ajax.on('error', function (e) {
_this14.fireEvent('error', 'Could not load remote URL. Make sure the url exists, is a valid audio file,<br /> ' +
' or that is supports Cross Origin requests (Access-Control-Allow-Origin header) <br />' + e.target.statusText);
_this14.currentAjax = null;
// trigger resize
PKAudioEditor.fireEvent ('RequestResize');
}));
return ajax;
}
/**
* Called while the audio file is loading
*
* @private
* @param {Event} e
* @emits WaveSurfer#loading
*/
}, {
key: 'onProgress',
value: function onProgress(e) {
var percentComplete = void 0;
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 opens in a new window.
*
* @param {number} length=1024 The scale in which to export the peaks. (Integer)
* @param {number} accuracy=10000 (Integer)
* @param {?boolean} noWindow Set to true to disable opening a new
* window with the JSON
* @param {number} start
* @todo Update exportPCM to work with new getPeaks signature
* @return {string} JSON of peaks
*/
}, {
key: 'exportPCM',
value: function exportPCM(length, accuracy, noWindow, start) {
length = length || 1024;
start = start || 0;
accuracy = accuracy || 10000;
noWindow = noWindow || false;
var peaks = this.backend.getPeaks(length, start);
var arr = [].map.call(peaks, function (val) {
return Math.round(val * accuracy) / accuracy;
});
var json = JSON.stringify(arr);
if (!noWindow) {
window.open('data:application/json;charset=utf-8,' + encodeURIComponent(json));
}
return json;
}
/**
* 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'
* @param {number} quality=1
* @return {string} data URI of image
*/
}, {
key: 'exportImage',
value: function exportImage(format, quality) {
if (!format) {
format = 'image/png';
}
if (!quality) {
quality = 1;
}
return this.drawer.getImage(format, quality);
}
/**
* Cancel any pending buffer loading cancelBufferLoad
*/
}, {
key: 'cancelBufferLoad',
value: function cancelBufferLoad() {
if (this.bid && this.bid.curr) {
this.bid[ this.bid['curr'] ] = null;
return (true);
}
return (false);
}
/**
* Cancel any ajax request currently in progress
*/
}, {
key: 'cancelAjax',
value: function cancelAjax() {
if (this.currentAjax) {
this.currentAjax.xhr.abort();
this.currentAjax = null;
return (true);
}
return (false);
}
/**
* @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.cancelAjax();
this.clearTmpEvents();
this.drawer.progress(0);
this.drawer.setWidth(0);
this.drawer.drawPeaks({ length: this.drawer.getWidth() }, 0, 2);
}
/**
* 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);
}
this.backend.destroy();
this.drawer.destroy();
this.isDestroyed = true;
this.arraybuffer = null;
}
}]);
return WaveSurfer;
}(util.Observer);
WaveSurfer.util = util;
exports.default = WaveSurfer;
if (!Array.prototype.copyWithin) {
Array.prototype.copyWithin = function (target, start /*, end*/) {
// Steps 1-2.
if (this == null) {
throw new TypeError('this is null or not defined');
}
var O = Object(this);
// Steps 3-5.
var len = O.length >>> 0;
// Steps 6-8.
var relativeTarget = target >> 0;
var to = relativeTarget < 0 ? Math.max(len + relativeTarget, 0) : Math.min(relativeTarget, len);
// Steps 9-11.
var relativeStart = start >> 0;
var from = relativeStart < 0 ? Math.max(len + relativeStart, 0) : Math.min(relativeStart, len);
// Steps 12-14.
var end = arguments[2];
var relativeEnd = end === undefined ? len : end >> 0;
var final = relativeEnd < 0 ? Math.max(len + relativeEnd, 0) : Math.min(relativeEnd, len);
// Step 15.
var count = Math.min(final - from, len - to);
// Steps 16-17.
var direction = 1;
if (from < to && to < from + count) {
direction = -1;
from += count - 1;
to += count - 1;
}
// Step 18.
while (count > 0) {
if (from in O) {
O[to] = O[from];
} else {
delete O[to];
}
from += direction;
to += direction;
count--;
}
// Step 19.
return O;
};
}
module.exports = exports['default'];
/***/ }),
/***/ "./src/webaudio.js":
/*!*************************!*\
!*** ./src/webaudio.js ***!
\*************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = 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); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _util = __webpack_require__(/*! ./util */ "./src/util/index.js");
var util = _interopRequireWildcard(_util);
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; 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 _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
// using consts to prevent someone writing the string wrong
var PLAYING = 'playing';
var PAUSED = 'paused';
var FINISHED = 'finished';
/**
* WebAudio backend
*
* @extends {Observer}
*/
var is_safari = navigator.userAgent.toLowerCase().indexOf('safari/') > -1;
var WebAudio = function (_util$Observer) {
_inherits(WebAudio, _util$Observer);
_createClass(WebAudio, [{
key: 'supportsWebAudio',
/**
* Does the browser support this backend
*
* @return {boolean}
*/
/** @private */
/** @private */
value: function supportsWebAudio() {
return !!(window.AudioContext || window.webkitAudioContext);
}
/**
* Get the audio context used by this backend or create one
*
* @return {AudioContext}
*/
/** @private */
/** @private */
}, {
key: 'getAudioContext',
value: function getAudioContext() {
if (!window.WaveSurferAudioContext) {
// try {
window.WaveSurferAudioContext = new (window.AudioContext || window.webkitAudioContext)();
// } catch (e) {}
}
return window.WaveSurferAudioContext;
}
/**
* Get the offline audio context used by this backend or create one
*
* @param {number} sampleRate
* @return {OfflineAudioContext}
*/
}, {
key: 'getOfflineAudioContext',
value: function getOfflineAudioContext(sampleRate) {
if (!window.WaveSurferOfflineAudioContext) {
window.WaveSurferOfflineAudioContext = new (window.OfflineAudioContext || window.webkitOfflineAudioContext)(1, 2, sampleRate);
}
return window.WaveSurferOfflineAudioContext;
}
/**
* Construct the backend
*
* @param {WavesurferParams} params
*/
}]);
function WebAudio(params) {
var _this$stateBehaviors, _this$states;
_classCallCheck(this, WebAudio);
/** @private */
var _this = _possibleConstructorReturn(this, (WebAudio.__proto__ || Object.getPrototypeOf(WebAudio)).call(this));
_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$stateBehaviors);
_this.params = params;
/** @private */
_this.ac = params.audioContext || _this.getAudioContext();
/**@private */
_this.lastPlay = _this.ac.currentTime;
/** @private */
_this.startPosition = 0;
/** @private */
_this.scheduledPause = null;
/** @private */
_this.states = (_this$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.analyser = null;
/** @private */
_this.buffer = null;
/** @private */
_this.filters = [];
/** @private */
_this.gainNode1 = null;
_this.gainNode2 = null;
_this.splitterNode = null;
/** @private */
_this.mergedPeaks = null;
/** @private */
_this.offlineAc = null;
/** @private */
_this.peaks = null;
/** @private */
_this.playbackRate = 1;
/** @private */
_this.analyser = null;
/** @private */
_this.scriptNode = null;
/** @private */
_this.source = null;
/** @private */
_this.splitPeaks = [];
/** @private */
_this.state = null;
/** @private */
_this.explicitDuration = null;
_this.FreqArr = new Uint8Array(512); // 256
return _this;
}
/**
* Initialise the backend, called in `wavesurfer.createBackend()`
*/
_createClass(WebAudio, [{
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.mergerNode);
}
}
/** @private */
}, {
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
*/
}, {
key: 'setFilter',
value: function setFilter() {
for (var _len = arguments.length, filters = 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.gainNode1);
}
}
/** @private */
}, {
key: 'createScriptNode',
value: function createScriptNode() {
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 ( ee ) {
// if not active remove...
if (!_this2.states[PLAYING])
return ;
/*
var dataArray = new Float32Array(_this2.analyser.fftSize); // Float32Array needs to be the same length as the fftSize
_this2.analyser.getFloatTimeDomainData(dataArray); // fill the Float32Array with data returned from getFloatTimeDomainData()
var temp2 = 0;
for (var j = 0; j < _this2.analyser.fftSize; j += 1) {
var x = dataArray[j];
if (Math.abs(x) >= temp2) {
temp2 = Math.abs(x);
}
}
console.log("----------");
var foo = 20 * Math.log10(temp2) + 0.001;
console.log("new loudness is ", foo);
*/
var time = _this2.getCurrentTime();
var buffer = _this2.buffer;
var sample_rate = buffer.sampleRate;
var offset = time * sample_rate >> 0;
var jump = 4;
var clip_level = 1.0;
var loudness = [0, 0];
var sr = 512;
var band_amp = 0;
var temp = 0;
for (var i = 0; i < buffer.numberOfChannels; ++i) {
temp = 0;
var chan_data = buffer.getChannelData(i);
for (var j = 0; j < sr; j += jump) {
var x = Math.abs(chan_data[offset + j]);
if (x > temp) {
temp = x;
}
}
loudness[i] = 20 * Math.log10(temp) + 0.001;
}
// console.log("versus ", loudness);
_this2.peak_frequency = loudness;
// Get the audio data and store it in our array.
if (_this2.logFrequencies) {
// _this2.analyser.smoothingTimeConstant = 0.85;
// _this2.analyser.fftSize = 512;// * 2;
// console.log( _this2.analyser.frequencyBinCount);
_this2.analyser.getByteFrequencyData(_this2.FreqArr);
}
// this.peak_frequency = Math.max.apply( null, this.FreqArr );
if (time >= _this2.getDuration()) {
_this2.setState(FINISHED);
_this2.states[PLAYING] = null;
_this2.fireEvent('pause', 'end');
} else if (time >= _this2.scheduledPause) {
_this2.pause();
} else if (_this2.state === _this2.states[PLAYING]) {
_this2.fireEvent('audioprocess', time, ee.timeStamp);
}
_this2.peak_frequency = null;
};
}
/** @private */
}, {
key: 'removeOnAudioProcess',
value: function removeOnAudioProcess() {
// @PK #### this might be needed...
if (!is_safari)
this.scriptNode.onaudioprocess = null;
// this.scriptNode.disconnect ();
}
/** @private */
}, {
key: 'createAnalyserNode',
value: function createAnalyserNode() {
this.analyser = this.ac.createAnalyser();
// this.analyser.smoothingTimeConstant = 0.8;
this.analyser.fftSize = 1024; //512;
this.analyser.connect(this.splitterNode);
// this.analyser.connect(this.mergerNode);
}
/**
* Create the gain node needed to control the playback volume.
*
* @private
*/
}, {
key: 'SetNumberOfChannels',
value: function SetNumberOfChannels( num ) {
this.splitterNode.disconnect (0);
this.splitterNode.disconnect (1);
if (num === 1)
{
this.splitterNode.connect (this.gainNode1, 0);
this.splitterNode.connect (this.gainNode2, 0);
}
else if ( num === 2)
{
this.splitterNode.connect (this.gainNode1, 1);
this.splitterNode.connect (this.gainNode2, 0);
}
}
}, {
key: 'createVolumeNode',
value: function createVolumeNode() {
// Create gain node using the AudioContext
this.splitterNode = this.ac.createChannelSplitter ( 2 );
this.mergerNode = this.ac.createChannelMerger ( 2 );
if (this.ac.createGain) {
this.gainNode1 = this.ac.createGain();
this.gainNode2 = this.ac.createGain();
} else {
this.gainNode1 = this.ac.createGainNode();
this.gainNode2 = this.ac.createGainNode();
}
this.splitterNode.connect (this.gainNode1, 1);
this.splitterNode.connect (this.gainNode2, 0);
this.gainNode1.connect (this.mergerNode, 0, 1); // or the other way around???? ####
this.gainNode2.connect (this.mergerNode, 0, 0);
// Add the gain node to the graph
this.mergerNode.connect (this.ac.destination);
}
/**
* Set the sink id for the media player
*
* @param {string} deviceId String value representing audio device id.
*/
}, {
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();
// debugger; // ####
this.gainNode1.disconnect();
this.gainNode1.connect(dest);
this.gainNode2.disconnect();
this.gainNode2.connect(dest);
this.mergerNode.disconnect();
this.mergerNode.connect(dest);
this.splitterNode.disconnect();
this.splitterNode.connect(dest);
audio.src = URL.createObjectURL(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.gainNode1.gain.setValueAtTime (value, this.ac.currentTime);
this.gainNode2.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.gainNode1.gain.value;
}
}, {
key: 'getLoudness',
value: function getLoudness() {
return this.peak_frequency;
}
/** @private */
}, {
key: 'decodeArrayBuffer',
value: function decodeArrayBuffer(arraybuffer, callback, errback) {
PKAudioEditor.engine.ID3 (arraybuffer);
if (!this.offlineAc) {
this.offlineAc = this.getOfflineAudioContext(44100); // this.ac ? this.ac.sampleRate : 44100);
}
var promise = this.offlineAc.decodeAudioData(arraybuffer, function (data) {
// ----
return callback(data);
}, errback);
if (promise)
{
promise.catch(function( error ) {
console.log("couldn't load audio");
// errback && errback (error);
});
}
}
/**
* Set pre-decoded peaks
*
* @param {number[]|number[][]} peaks
* @param {?number} duration
*/
}, {
key: 'setPeaks',
value: function setPeaks(peaks, duration) {
this.explicitDuration = duration;
this.peaks = peaks;
}
/**
* Set the rendered length (different from the length of the audio).
*
* @param {number} length
*/
}, {
key: 'setLength',
value: function setLength(length) {
// No resize, we can preserve the cached peaks.
if (this.mergedPeaks && length * 2 == this.mergedPeaks.length) {
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 = void 0;
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 of 2*<length> peaks or array of arrays of
* peaks consisting of (max, min) values for each subrange.
*/
}, {
key: 'getSpectre',
value: function getSpectre(length, first, last, force, drawer) {
first = first * this.buffer.sampleRate;
last = last || length - 1;
var fftSamples = 512; //this.fftSamples;
var buffer = this.buffer;
var channelOne = buffer.getChannelData(0);
var bufferLength = buffer.length;
var sampleRate = buffer.sampleRate;
var frequencies = [];
var noverlap = 0;
// debugger;
//if (!noverlap) {
// var uniqueSamplesPerPx = buffer.length / 1376; // drawer.canvases[0].wave.width;
// noverlap = Math.max(0, Math.round(fftSamples - uniqueSamplesPerPx));
//}
var fft = new FFT(fftSamples, sampleRate, this.windowFunc, this.alpha);
var maxSlicesCount = Math.floor(bufferLength / (fftSamples - noverlap));
var currentOffset = 0; //first;
var maxOffset = channelOne.length;
while (currentOffset + fftSamples < maxOffset) {
var segment = channelOne.slice(currentOffset, currentOffset + fftSamples);
var spectrum = fft.calculateSpectrum(segment);
var array = new Uint8Array(fftSamples / 2);
var j = void 0;
for (j = 0; j < fftSamples / 2; j++) {
array[j] = Math.max(-255, Math.log10(spectrum[j]) * 45);
}
frequencies.push(array);
currentOffset += fftSamples - noverlap;
}
return (frequencies);
// ---
}
}, {
key: 'getPeaks',
value: function getPeaks(length, first, last, force) {
first = first * this.buffer.sampleRate;
last = last || length - 1;
this.setLength(length);
/**
* 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;
}
// console.log( this.buffer.length, last );
var sampleSize = this.buffer.length / last;
var sampleStep = ~~(sampleSize / 10) || 1;
if (sampleStep > 32) sampleStep = 32; // todo
else if (sampleStep < 6) sampleStep = 6;
var channels = this.buffer.numberOfChannels;
var c = void 0;
var init = 0;
//window.rr = 0;
//var old_shift = this.shift;
this.shift = 0;
if (this.splitPeaks && !force) {
// check if there is an overlap in values...
if (last == this.peaksEnd)
{
// console.log( (this.peaksStart - first) / sampleSize );
// console.log( 'aaa ', first, last );
var shift = (this.peaksStart - first) / sampleSize;
if (shift === 0) {
this.shift = 999999999;
return this.splitPeaks;
}
// var abs_shift = Math.abs (shift);
// if (abs_shift > 0) {
// shift = (shift * 2);
// if (abs_shift > 0.5) {
shift = Math.round ( shift );
first = this.peaksStart - (shift * sampleSize);
shift = (shift * 2);
// shift = Math.round ( Math.abs (shift) ) * (shift < 0 ? - 1 : 1);
// }
// else {
// shift = 2 * (shift/abs_shift);
// }
this.shift = shift;
for (c = 0; c < channels; ++c) {
var peaks = this.splitPeaks[c];
if (shift < 0) {
//console.log( peaks[0], peaks[1], peaks[2], peaks[3], peaks[4], peaks[5], peaks[6] , peaks[7] , peaks[8] , peaks[9] , peaks[10] );
//this.splitPeaks[c] = peaks.slice(-shift);
peaks.copyWithin(0, -shift);
//console.log( peaks[0], peaks[1], peaks[2], peaks[3], peaks[4], peaks[5], peaks[6] , peaks[7] , peaks[8] , peaks[9] , peaks[10] );
// for (var i = 0; i < shift; ++i)
// {
// peaks[i] = 0;
// }
// console.log( shift );
//window.rr = 1;
// console.log( 'sss ', shift, length, init, (length + shift) );
init = length + shift;
} else if (shift > 0) {
peaks.copyWithin(shift, 0, peaks.length - shift);
length = shift / 2 >> 0;
} else {
return this.splitPeaks;
}
}
// }
}
}
/*
if (!window.test123)
{
window.test123 = true;
var heapf32 = new Float32Array ( ASM_HEAP );
//var heapI32 = new Uint32Array ( ASM_HEAP );
// init
// length
// sampleSize
// first
//heapI32[0] = init;
//heapI32[1] = length;
//heapI32[2] = first;
//heapf32[3] = sampleSize;
heapf32.set (this.buffer.getChannelData(0), 0);
ASM_LIB.GetPeaks (init, length, first, sampleStep, sampleSize);
}
*/
for (c = 0; c < channels; ++c) {
var peaks = this.splitPeaks[c];
var chan = this.buffer.getChannelData(c);
var i = void 0;
for (i = init; i <= length; ++i) {
var start = first + (i * sampleSize) >> 0;
var end = (start + sampleSize) >> 0;
var min = 0;
var max = 0;
var j = void 0;
for (j = start; j < end; j += sampleStep) {
var value = chan[j];
/*
if (this.reg) {
if (j >= this.reg.pos.start && j <= this.reg.pos.end) {
// take the value from the buffer
var kk = j - this.reg.pos.start;
value = chan[ this.reg.initpos.start + kk ];
}
else if (j >= this.reg.initpos.start && j <= this.reg.initpos.end) {
value = 0;
}
// ----
}
*/
if (value > max) {
max = value;
}
else if (value < min) {
min = value;
//console.log( value );
}
}
// if (window.rr === 1)
// {
// console.log(1);
// }
// console.log( 'bb ', 2 * i, max );
peaks[2 * i] = max;
peaks[2 * i + 1] = min;
}
}
this.extraPeakStart = -1;
this.extraPeakEnd = -1;
if (this.extraPeaks)
{
// convert extraOffset to pixels
var extraoffset = (this.extraOffset / sampleSize) >> 0;
if (first <= this.extraOffset && last > extraoffset)
{
extraoffset = ((this.extraOffset - first) / sampleSize) >> 0;
// var get length of peaks
var extra_len = this.extraPeaks.length;
var extra_arr_len = this.extraPeaks[0].length;
var templength = extraoffset + ((extra_arr_len * extra_len) / sampleSize) >> 0;
this.extraPeakStart = extraoffset;
this.extraPeakEnd = templength;
// templength = -1;
for (c = 0; c < channels; ++c)
{
var peaks = this.splitPeaks[c];
// var chan = this.buffer.getChannelData(c);
var i = void 0;
var k = 0;
for (i = extraoffset; i <= templength; ++i)
{
var start = k * sampleSize >> 0;
var end = start + sampleSize >> 0;
var min = 0;
var max = 0;
var j = void 0;
++k;
for (j = start; j < end; j += sampleStep)
{
var val = j / extra_arr_len;
if (val >= extra_len) {
break;
}
var value = this.extraPeaks[val >> 0][ j % extra_arr_len ];
if (value > max) {
max = value;
}
if (value < min) {
min = value;
}
}
peaks[2 * i] = max;
peaks[2 * i + 1] = min;
}
// ----
}
// ---
}
}
// ----
this.peaksStart = first;
this.peaksEnd = last;
return this.splitPeaks; //this.params.splitChannels ? this.splitPeaks : this.mergedPeaks;
}
/**
* Get the position from 0 to 1
*
* @return {number}
*/
}, {
key: 'getPlayedPercents',
value: function getPlayedPercents() {
return this.state.getPlayedPercents.call(this);
}
/** @private */
}, {
key: 'disconnectSource',
value: function disconnectSource() {
if (this.source) {
this.source.disconnect();
}
}
/**
* This is called when wavesurfer is destroyed
*/
}, {
key: 'destroy',
value: function destroy() {
if (!this.isPaused()) {
this.pause();
}
this.unAll();
this.buffer = null;
this.disconnectFilters();
this.disconnectSource();
this.gainNode1.disconnect();
this.gainNode2.disconnect();
this.mergerNode.disconnect();
this.splitterNode.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;
}
}
/**
* Loaded a decoded audio buffer
*
* @param {Object} buffer
*/
}, {
key: 'load',
value: function load ( buffer ) {
if (!this.buffer || !this._add)
{
// this.startPosition = 0;
this.lastPlay = this.ac.currentTime;
this.buffer = buffer;
this.peaks = null;
this.createSource();
// --hack
this.source.start (0,0,0);
this.source.stop (0);
this.createSource();
}
else
{
// old buffer duratino + new buffer duration
// new_offset = old buffer length
var originalBuffer = this.buffer;
var originalDuration = this.buffer.duration;
var originalOffset = originalDuration;
var newDuration = buffer.duration;
var newLen = (originalDuration + newDuration) * this.buffer.sampleRate;
var uberSegment = this.ac.createBuffer (
this.buffer.numberOfChannels,
this.buffer.length + buffer.length,
this.buffer.sampleRate
);
var offset = ((originalDuration / 1) * originalBuffer.sampleRate) >> 0;
for (var i = 0; i < originalBuffer.numberOfChannels; ++i)
{
var chan_data = originalBuffer.getChannelData ( i );
var uberChanData = uberSegment.getChannelData ( i );
var segment_chan_data = null;
if (buffer.numberOfChannels === 1)
segment_chan_data = buffer.getChannelData ( 0 );
else
segment_chan_data = buffer.getChannelData ( i );
// check if we have the selected channel
if (offset > 0)
{
uberChanData.set (
chan_data.slice ( 0, offset )
);
}
uberChanData.set (
segment_chan_data, offset
);
if (offset < (originalBuffer.length + buffer.length) )
{
uberChanData.set (
chan_data.slice ( offset ), offset + segment_chan_data.length
);
}
// ---
}
// ----
// this.startPosition = 0;
this.lastPlay = this.ac.currentTime;
this.buffer = uberSegment;
this.peaks = null;
this.createSource();
// --hack
this.source.start (0,0,0);
this.source.stop (0);
this.createSource();
// this.buffer = uberSegment;
}
}
/** @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.source.playbackRate.setValueAtTime(this.playbackRate, this.ac.currentTime);
this.source.buffer = this.buffer;
this.source.connect(this.analyser);
}
/**
* Used by `wavesurfer.isPlaying()` and `wavesurfer.playPause()`
*
* @return {boolean}
*/
}, {
key: 'isPaused',
value: function isPaused() {
return this.state !== this.states[PLAYING];
}
/**
* Used by `wavesurfer.getDuration()`
*
* @return {number}
*/
}, {
key: 'getDuration',
value: function getDuration() {
if (!this.buffer) {
if (this.explicitDuration) {
return this.explicitDuration;
}
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}}
*/
}, {
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}
*/
}, {
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, end - start);
if (this.ac.state == 'suspended') {
this.ac.resume && this.ac.resume();
}
if (!this.states[PLAYING])
{
_defineProperty(this.states, PLAYING, Object.create(this.stateBehaviors[PLAYING]));
}
this.setState(PLAYING);
this.fireEvent('play');
}
/**
* Pauses the loaded audio.
*/
}, {
key: 'pause',
value: function pause() {
if (this.state === this.states[PAUSED]) return ;
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 audioclip's
* duration.
*
* @return {number}
*/
}, {
key: 'getCurrentTime',
value: function getCurrentTime() {
return this.state.getCurrentTime.call(this);
}
/**
* Returns the current playback rate. (0=no playback, 1=normal playback)
*
* @return {number}
*/
}, {
key: 'getPlaybackRate',
value: function getPlaybackRate() {
return this.playbackRate;
}
/**
* Set the audio source playback rate.
*
* @param {number} value
*/
}, {
key: 'setPlaybackRate',
value: function setPlaybackRate(value) {
value = value || 1;
if (this.isPaused()) {
this.playbackRate = value;
} else {
this.pause();
this.playbackRate = value;
this.play();
}
}
}]);
return WebAudio;
}(util.Observer);
WebAudio.scriptBufferSize = 256;
exports.default = WebAudio;
module.exports = exports['default'];
/***/ })
/******/ });
});
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