opl3/example/pico.min.js

OPL3 emulator library

(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.Pico=f()}})(function(){var define,module,exports;return function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s}({1:[function(require,module,exports){"use strict";var Pico=require("./pico");var WebAudioPlayer=require("./player/web-audio-player");var FlashFallbackPlayer=require("./player/flash-fallback-player");if(WebAudioPlayer.isEnabled){Pico.bind(WebAudioPlayer)}else{FlashFallbackPlayer.fallback(Pico)}module.exports=Pico},{"./pico":2,"./player/flash-fallback-player":3,"./player/web-audio-player":4}],2:[function(require,module,exports){"use strict";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")}}var Processor=require("./processor");var processor=new Processor;var Pico=function(){function Pico(){_classCallCheck(this,Pico)}_createClass(Pico,[{key:"bind",value:function bind(klass){processor.bind(klass)}},{key:"play",value:function play(audioprocess){processor.play(audioprocess)}},{key:"pause",value:function pause(){processor.pause()}},{key:"env",get:function get(){return processor.env}},{key:"sampleRate",get:function get(){return processor.sampleRate}},{key:"bufferSize",get:function get(){return processor.bufferSize}},{key:"isPlaying",get:function get(){return processor.isPlaying}}]);return Pico}();module.exports=new Pico},{"./processor":5}],3:[function(require,module,exports){(function(global){"use strict";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")}}var SWFID="PicoFlashFallbackPlayer"+Date.now();var FlashFallbackPlayer=function(){function FlashFallbackPlayer(processor){_classCallCheck(this,FlashFallbackPlayer);this.env="flashfallback";this.sampleRate=44100;this.bufferLength=2048;this.processor=processor;this._timerId=0;this._timerAPI=global}_createClass(FlashFallbackPlayer,[{key:"play",value:function play(){var _this=this;if(FlashFallbackPlayer.swf&&this._timerId===0){(function(){var processor=_this.processor;var bufferLength=_this.bufferLength;var bufL=new Float32Array(bufferLength);var bufR=new Float32Array(bufferLength);var out=new Array(bufferLength*2);var written=0;var startTime=Date.now();var writtenIncr=bufferLength/_this.sampleRate*1e3;_this._timerId=_this._timerAPI.setInterval(function(){if(written<Date.now()-startTime){var x=undefined;processor.process(bufL,bufR);for(var i=0,j=0;i<bufferLength;i++){x=bufL[i]*16384+32768|0;x=Math.max(16384,Math.min(x,49152));out[j++]=String.fromCharCode(x);x=bufR[i]*16384+32768|0;x=Math.max(16384,Math.min(x,49152));out[j++]=String.fromCharCode(x)}FlashFallbackPlayer.swf.write(out.join(""));written+=writtenIncr}},25);FlashFallbackPlayer.swf.play()})()}}},{key:"pause",value:function pause(){if(FlashFallbackPlayer.swf&&this._timerId!==0){this._timerAPI.clearInterval(this._timerId);this._timerId=0;FlashFallbackPlayer.swf.pause()}}}]);return FlashFallbackPlayer}();function getPicoSwfUrl(){var scripts=global.document.getElementsByTagName("script");for(var i=0;i<scripts.length;i++){var matched=scripts[i].src.match(/^(.*\/)pico(?:\.min)?\.js$/);if(matched){return matched[1]+"pico.swf"}}return"pico.swf"}function createFlashContainer(swfId){var container=global.document.createElement("div");var object=global.document.createElement("object");var param=global.document.createElement("param");param.setAttribute("name","allowScriptAccess");param.setAttribute("value","always");object.id=swfId;object.classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000";object.width=1;object.height=1;object.setAttribute("data",getPicoSwfUrl()+"?"+Date.now());object.setAttribute("type","application/x-shockwave-flash");container.style.position="fixed";container.style.left=0;container.style.top=0;container.style.width="1px";container.style.height="1px";object.appendChild(param);container.appendChild(object);return container}FlashFallbackPlayer.fallback=function(Pico){global.picojs$flashfallback=function(){Pico.bind(FlashFallbackPlayer);delete global.picojs$flashfallback};global.window.addEventListener("load",function(){global.document.body.appendChild(createFlashContainer(SWFID));FlashFallbackPlayer.swf=global.document.getElementById(SWFID)})};module.exports=FlashFallbackPlayer}).call(this,typeof global!=="undefined"?global:typeof self!=="undefined"?self:typeof window!=="undefined"?window:{})},{}],4:[function(require,module,exports){(function(global){"use strict";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")}}var Driver=require("pico.driver.webaudio");var AudioContext=global.AudioContext||global.webkitAudioContext;var WebAudioPlayer=function(){function WebAudioPlayer(processor){_classCallCheck(this,WebAudioPlayer);this._driver=new Driver;this._driver.setup({context:new AudioContext,bufferLength:2048});this._driver.processor=processor;this.env="webaudio";this.bufferLength=this._driver.bufferLength;this.sampleRate=this._driver.sampleRate}_createClass(WebAudioPlayer,[{key:"play",value:function play(){this._driver.start()}},{key:"pause",value:function pause(){this._driver.stop()}}],[{key:"isEnabled",get:function get(){return!!AudioContext}}]);return WebAudioPlayer}();module.exports=WebAudioPlayer}).call(this,typeof global!=="undefined"?global:typeof self!=="undefined"?self:typeof window!=="undefined"?window:{})},{"pico.driver.webaudio":6}],5:[function(require,module,exports){"use strict";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")}}var BUFFER_SIZE=64;var Processor=function(){function Processor(){_classCallCheck(this,Processor);this.player=null;this.audioprocess=null;this.isPlaying=false;this.streams=null;this.buffers=null}_createClass(Processor,[{key:"bind",value:function bind(Klass){this.player=new Klass(this)}},{key:"play",value:function play(audioprocess){if(!this.isPlaying){this.isPlaying=true;this.streams=[new Float32Array(this.player.bufferLength),new Float32Array(this.player.bufferLength)];this.buffers=[new Float32Array(BUFFER_SIZE),new Float32Array(BUFFER_SIZE)];this.audioprocess=audioprocess;this.player.play()}}},{key:"pause",value:function pause(){if(this.isPlaying){this.isPlaying=false;this.player.pause();this.streams=null;this.buffers=null;this.audioprocess=null}}},{key:"process",value:function process(bufL,bufR){var audioprocess=this.audioprocess;var buffers=this.buffers;var bufferL=buffers[0];var bufferR=buffers[1];var n=bufL.length/BUFFER_SIZE;for(var i=0;i<n;i++){audioprocess({bufferSize:BUFFER_SIZE,buffers:buffers});bufL.set(bufferL,i*BUFFER_SIZE);bufR.set(bufferR,i*BUFFER_SIZE)}}},{key:"env",get:function get(){return this.player.env}},{key:"sampleRate",get:function get(){return this.player.sampleRate}},{key:"bufferSize",get:function get(){return BUFFER_SIZE}}]);return Processor}();module.exports=Processor},{}],6:[function(require,module,exports){function PicoWebAudioDriver(){this.sampleRate=0;this.bufferLength=0;this._scp=null;this._context=null;this._destination=null}PicoWebAudioDriver.prototype.setup=function(opts){var bufferLength=Math.max(256,Math.min(+opts.bufferLength|0||1024,16384));this.bufferLength=1<<Math.ceil(Math.log(bufferLength)/Math.log(2));if(opts.destination){this._destination=opts.destination;this._context=this._destination.context}else{this._context=opts.context;this._destination=this._context.destination}this.sampleRate=this._context.sampleRate};PicoWebAudioDriver.prototype.start=function(){var processor=this.processor;var bufL=new Float32Array(this.bufferLength);var bufR=new Float32Array(this.bufferLength);if(this._context!==null&&this.processor!==null&&this._scp===null){this._scp=this._context.createScriptProcessor(this.bufferLength,0,2);if(typeof AudioBuffer.prototype.copyToChannel==="function"){this._scp.onaudioprocess=function(e){var buf=e.outputBuffer;processor.process(bufL,bufR);buf.copyToChannel(bufL,0);buf.copyToChannel(bufR,1)}}else{this._scp.onaudioprocess=function(e){var buf=e.outputBuffer;processor.process(bufL,bufR);buf.getChannelData(0).set(bufL);buf.getChannelData(1).set(bufR)}}this._scp.connect(this._destination)}};PicoWebAudioDriver.prototype.stop=function(){if(this._scp!==null){this._scp.disconnect();this._scp=null}};module.exports=PicoWebAudioDriver},{}]},{},[1])(1)});