const OPENMPT_MODULE_RENDER_STEREOSEPARATION_PERCENT=2
const OPENMPT_MODULE_RENDER_INTERPOLATIONFILTER_LENGTH=3
var ChiptuneAudioContext=window.AudioContext||window.webkitAudioContext;var ChiptuneJsConfig=function(repeatCount,stereoSeparation,interpolationFilter,context){this.repeatCount=repeatCount;this.stereoSeparation=stereoSeparation;this.interpolationFilter=interpolationFilter;this.context=context}
ChiptuneJsConfig.prototype.constructor=ChiptuneJsConfig;var ChiptuneJsPlayer=function(config){this.config=config;this.context=config.context||new ChiptuneAudioContext();this.currentPlayingNode=null;this.handlers=[];this.touchLocked=!0}
ChiptuneJsPlayer.prototype.constructor=ChiptuneJsPlayer;ChiptuneJsPlayer.prototype.fireEvent=function(eventName,response){var handlers=this.handlers;if(handlers.length){handlers.forEach(function(handler){if(handler.eventName===eventName){handler.handler(response)}})}}
ChiptuneJsPlayer.prototype.addHandler=function(eventName,handler){this.handlers.push({eventName:eventName,handler:handler})}
ChiptuneJsPlayer.prototype.onEnded=function(handler){this.addHandler('onEnded',handler)}
ChiptuneJsPlayer.prototype.onError=function(handler){this.addHandler('onError',handler)}
ChiptuneJsPlayer.prototype.duration=function(){return libopenmpt._openmpt_module_get_duration_seconds(this.currentPlayingNode.modulePtr)}
ChiptuneJsPlayer.prototype.seek=function(position){libopenmpt._openmpt_module_set_position_seconds(this.currentPlayingNode.modulePtr,position)}
ChiptuneJsPlayer.prototype.getPosition=function(){return libopenmpt._openmpt_module_get_position_seconds(this.currentPlayingNode.modulePtr)}
ChiptuneJsPlayer.prototype.getCurrentRow=function(){return libopenmpt._openmpt_module_get_current_row(this.currentPlayingNode.modulePtr)}
ChiptuneJsPlayer.prototype.getCurrentPattern=function(){return libopenmpt._openmpt_module_get_current_pattern(this.currentPlayingNode.modulePtr)}
ChiptuneJsPlayer.prototype.getCurrentOrder=function(){return libopenmpt._openmpt_module_get_current_order(this.currentPlayingNode.modulePtr)}
ChiptuneJsPlayer.prototype.getCurrentTime=function(){return libopenmpt._openmpt_module_get_position_seconds(this.currentPlayingNode.modulePtr)};ChiptuneJsPlayer.prototype.getTotalOrder=function(){return libopenmpt._openmpt_module_get_num_orders(this.currentPlayingNode.modulePtr)};ChiptuneJsPlayer.prototype.getTotalPatterns=function(){return libopenmpt._openmpt_module_get_num_patterns(this.currentPlayingNode.modulePtr)};ChiptuneJsPlayer.prototype.getNumChannels=function(){return libopenmpt._openmpt_module_get_num_channels(this.currentPlayingNode.modulePtr)};ChiptuneJsPlayer.prototype.getCurrentPlayingChannels=function(){return libopenmpt._openmpt_module_get_current_playing_channels(this.currentPlayingNode.modulePtr)};ChiptuneJsPlayer.prototype.getVu=function(chan){return libopenmpt._openmpt_module_get_current_channel_vu_mono(this.currentPlayingNode.modulePtr,chan)};ChiptuneJsPlayer.prototype.isPaused=function(){return this.currentPlayingNode.paused};ChiptuneJsPlayer.prototype.metadata=function(){var data={};var keys=UTF8ToString(libopenmpt._openmpt_module_get_metadata_keys(this.currentPlayingNode.modulePtr)).split(';');var keyNameBuffer=0;for(var i=0;i<keys.length;i++){keyNameBuffer=libopenmpt._malloc(keys[i].length+1);writeAsciiToMemory(keys[i],keyNameBuffer);data[keys[i]]=UTF8ToString(libopenmpt._openmpt_module_get_metadata(this.currentPlayingNode.modulePtr,keyNameBuffer));libopenmpt._free(keyNameBuffer)}
return data}
ChiptuneJsPlayer.prototype.module_ctl_set=function(ctl,value){return libopenmpt.ccall('openmpt_module_ctl_set','number',['number','string','string'],[this.currentPlayingNode.modulePtr,ctl,value])===1}
ChiptuneJsPlayer.prototype.unlock=function(){var context=this.context;var buffer=context.createBuffer(1,1,22050);var unlockSource=context.createBufferSource();unlockSource.buffer=buffer;unlockSource.connect(context.destination);unlockSource.start(0);this.touchLocked=!1}
ChiptuneJsPlayer.prototype.load=function(input,callback){if(this.touchLocked){this.unlock()}
var player=this;if(input instanceof File){var reader=new FileReader();reader.onload=function(){return callback(reader.result)}.bind(this);reader.readAsArrayBuffer(input)}else{var xhr=new XMLHttpRequest();xhr.open('GET',input,!0);xhr.responseType='arraybuffer';xhr.onload=function(e){if(xhr.status===200){return callback(xhr.response)}else{player.fireEvent('onError',{type:'onxhr'})}}.bind(this);xhr.onerror=function(){player.fireEvent('onError',{type:'onxhr'})};xhr.onabort=function(){player.fireEvent('onError',{type:'onxhr'})};xhr.send()}}
ChiptuneJsPlayer.prototype.play=function(buffer){this.stop();var processNode=this.createLibopenmptNode(buffer,this.config);if(processNode==null){return}
libopenmpt._openmpt_module_set_repeat_count(processNode.modulePtr,this.config.repeatCount);libopenmpt._openmpt_module_set_render_param(processNode.modulePtr,OPENMPT_MODULE_RENDER_STEREOSEPARATION_PERCENT,this.config.stereoSeparation);libopenmpt._openmpt_module_set_render_param(processNode.modulePtr,OPENMPT_MODULE_RENDER_INTERPOLATIONFILTER_LENGTH,this.config.interpolationFilter);this.currentPlayingNode=processNode;processNode.connect(this.context.destination)}
ChiptuneJsPlayer.prototype.stop=function(){if(this.currentPlayingNode!=null){this.currentPlayingNode.disconnect();this.currentPlayingNode.cleanup();this.currentPlayingNode=null}}
ChiptuneJsPlayer.prototype.togglePause=function(){if(this.currentPlayingNode!=null){this.currentPlayingNode.togglePause()}}
ChiptuneJsPlayer.prototype.createLibopenmptNode=function(buffer,config){var maxFramesPerChunk=4096;var processNode=this.context.createScriptProcessor(2048,0,2);processNode.config=config;processNode.player=this;var byteArray=new Int8Array(buffer);var ptrToFile=libopenmpt._malloc(byteArray.byteLength);libopenmpt.HEAPU8.set(byteArray,ptrToFile);processNode.modulePtr=libopenmpt._openmpt_module_create_from_memory(ptrToFile,byteArray.byteLength,0,0,0);processNode.paused=!1;processNode.leftBufferPtr=libopenmpt._malloc(4*maxFramesPerChunk);processNode.rightBufferPtr=libopenmpt._malloc(4*maxFramesPerChunk);processNode.cleanup=function(){if(this.modulePtr!=0){libopenmpt._openmpt_module_destroy(this.modulePtr);this.modulePtr=0}
if(this.leftBufferPtr!=0){libopenmpt._free(this.leftBufferPtr);this.leftBufferPtr=0}
if(this.rightBufferPtr!=0){libopenmpt._free(this.rightBufferPtr);this.rightBufferPtr=0}}
processNode.stop=function(){this.disconnect();this.cleanup()}
processNode.pause=function(){this.paused=!0}
processNode.unpause=function(){this.paused=!1}
processNode.togglePause=function(){this.paused=!this.paused}
processNode.onaudioprocess=function(e){var outputL=e.outputBuffer.getChannelData(0);var outputR=e.outputBuffer.getChannelData(1);var framesToRender=outputL.length;if(this.ModulePtr==0){for(var i=0;i<framesToRender;++i){outputL[i]=0;outputR[i]=0}
this.disconnect();this.cleanup();return}
if(this.paused){for(var i=0;i<framesToRender;++i){outputL[i]=0;outputR[i]=0}
return}
var framesRendered=0;var ended=!1;var error=!1;while(framesToRender>0){var framesPerChunk=Math.min(framesToRender,maxFramesPerChunk);var actualFramesPerChunk=libopenmpt._openmpt_module_read_float_stereo(this.modulePtr,this.context.sampleRate,framesPerChunk,this.leftBufferPtr,this.rightBufferPtr);if(actualFramesPerChunk==0){ended=!0;error=!this.modulePtr}
var rawAudioLeft=libopenmpt.HEAPF32.subarray(this.leftBufferPtr/4,this.leftBufferPtr/4+actualFramesPerChunk);var rawAudioRight=libopenmpt.HEAPF32.subarray(this.rightBufferPtr/4,this.rightBufferPtr/4+actualFramesPerChunk);for(var i=0;i<actualFramesPerChunk;++i){outputL[framesRendered+i]=rawAudioLeft[i];outputR[framesRendered+i]=rawAudioRight[i]}
for(var i=actualFramesPerChunk;i<framesPerChunk;++i){outputL[framesRendered+i]=0;outputR[framesRendered+i]=0}
framesToRender-=framesPerChunk;framesRendered+=framesPerChunk;var elapsedTime=parseInt(libopenmpt._openmpt_module_get_position_seconds(this.modulePtr));var duration=parseInt(libopenmpt._openmpt_module_get_duration_seconds(this.modulePtr));navigator.mediaSession.setPositionState({duration:duration,playbackRate:1,position:elapsedTime,})}
if(ended){this.disconnect();this.cleanup();error?processNode.player.fireEvent('onError',{type:'openmpt'}):processNode.player.fireEvent('onEnded')}}
return processNode}