faust-common 0.9.95~repack1-2 / usr / share / faust / webaudio / ExportLib.js

/************************************************************
***************** Interface to FaustWeb *********************
************************************************************/

//--- Send asynchronous GET request to faustweb to get the list of available targets
// @exportUrl : url of FaustWeb service to target
// @callback : function called once request succeeded 
// 				- @param : the available targets as a JSON application
// json = {"platform1":["arch1", "arch2", ..., "archn"], ... , "platformn":["arch1", "arch2", ..., "archn"]}

function getTargets(exportUrl, callback, errCallback){

	var getrequest = new XMLHttpRequest();
				
	getrequest.onreadystatechange = function() {
		if(getrequest.readyState == 4 && getrequest.status == 200)				    		
			callback(getrequest.responseText);
		else if(getrequest.readyState == 4 && getrequest.status == 400)				    		
			errCallback(getrequest.responseText);
	}
				
	var targetsUrl = exportUrl + "/targets";
				
	getrequest.open("GET", targetsUrl, true);
	getrequest.send(null);
}	

//--- Send asynchronous POST request to faustweb to compile a faust DSP
// @exportUrl : url of FaustWeb service to target
// @name : name of DSP to compile
// @source_code : faust code to compile
// @callback : function called once request succeeded 
// 				- @param : the sha key corresponding to source_code
function getSHAKey(exportUrl, name, source_code, callback, errCallback){

	var filename = name+".dsp";

	var file = new File([source_code], filename);

	var newRequest = new XMLHttpRequest();

	var params = new FormData();
	params.append('file', file);

	var urlToTarget = exportUrl + "/filepost";	
	
	newRequest.open("POST", urlToTarget, true);

	newRequest.onreadystatechange = function() {
		if(newRequest.readyState == 4 && newRequest.status == 200)
			callback(newRequest.responseText);
		else if(newRequest.readyState == 4 && newRequest.status == 400)
			errCallback(newRequest.responseText);
	}
				
	newRequest.send(params);
}	
	
//--- Send asynchronous GET request to precompile target 
// @exportUrl : url of FaustWeb service to target
// @sha : sha key of DSP to precompile
// @platform/architecture : platform/architecture to precompile
// @callback : function called once request succeeded 
// 				- @param : the sha key 
function sendPrecompileRequest(exportUrl, sha, platform, architecture, callback){
			
	var getrequest = new XMLHttpRequest();
				
	getrequest.onreadystatechange = function() {
		if(getrequest.readyState == 4)
			callback(sha);
	}
			
	var compileUrl = exportUrl + "/" + sha + "/" + platform + "/" + architecture + "/precompile" ;
				
	getrequest.open("GET", compileUrl, true);
	getrequest.send(null);

}

//--- Transform target 
// WARNING = THIS FUNCTION REQUIRES QRCODE.JS TO BE INCLUDED IN YOUR HTML FILE
// @exportUrl : url of FaustWeb service to target
// @sha : sha key of DSP
// @platform/architecture/target : platform/architecture/target compiled
// @cote : width and height of the returned QrCode
function getQrCode(url, sha, plateform, architecture, target, size){

	var downloadString = url + "/" + sha + "/" + plateform + "/" + architecture + "/" + target;
	
	var whiteContainer = document.createElement('div');
	whiteContainer.style.cssText = "width:" + size.toString() + "px; height:" + size.toString() + "px; background-color:white; position:relative; margin-left:auto; margin-right:auto; padding:3px;";
	
	var qqDiv = document.createElement('qrcode');
	
	var qq = new QRCode(qqDiv, {
    	text: downloadString,
	    width: size,
    	height: size,
	    colorDark : "#000000",
    	colorLight : "#ffffff",
	    correctLevel : QRCode.CorrectLevel.H
	});

	whiteContainer.appendChild(qqDiv);

	return whiteContainer;
}

// Return the array of available platforms from the json description
function getPlatforms(json){
	
	var platforms = [];
	
	var data = JSON.parse(json);
	var index = 0;

	for (var p in data) {
		platforms[index] = p;
		index++;
    }

	return platforms;
}

// Return the list of available architectures for a specific platform
// from the json description
function getArchitectures(json, platform){
	
	var architectures = [];
		
	var data = JSON.parse(json);
		
	return data[platform]						
//     var archs = data[platform];
			
// 	for (var i =0; i<archs.length; i++)
// 		architectures[i] = archs[i];
// 	
// 	return architectures;
}