Merge pull request #24 from rocketinventor/master

Updated song parser for JS

Author: fulldecent

In Javascript/airgap.html

@@ -16,9 +16,38 @@
 	<div class="content">
 		</br>
 		<input type="button" value="Play Song" onclick="start()"></br></br>
-		<textarea id="logs" style="width:70%;min-height:300px">Tested with Chrome at 1560Khz
-		</textarea>
-		<div style="font-size:14px">Ported by Yeo Quan Yang. Credits to the original author William Entriken @https://github.com/fulldecent</div><br/>
+		<textarea id="logs" style="width:70%;min-height:100px">Tested with Chrome at 1560Khz</textarea>
+		<p style="font-size:14px">Feel free to edit the code below or copy and paste any <em>valid</em> code.<br>Column one is time in <i>milliseconds</i>, and column two is <i>frequency</i>.</p>
+		<textarea id="tones" style="width:70%;min-height:200px">
+400 2673
+400 2349
+400 2093
+400 2349
+400 2673
+400 2673
+790 2673
+400 2349
+400 2349
+790 2349
+400 2673
+400 3136
+790 3136
+400 2673
+400 2349
+400 2093
+400 2349
+400 2673
+400 2673
+400 2673
+400 2673
+400 2349
+400 2349
+400 2673
+400 2349
+790 2093</textarea>
+		<div style="font-size:14px">Ported by <a href="https://github.com/quanyang">Yeo Quan Yang</a> & maintained by <a href="https://github.com/rocketinventor">Elliot Gerchak</a>.
+			<br>
+			Original machine code by <a href="https://github.com/fulldecent">William Entriken</a>.</div><br/>
 		<div style="font-size:14px">Project site at <a href="https://github.com/fulldecent/system-bus-radio">https://github.com/fulldecent/system-bus-radio</a></div><br/>
 		<div style="font-size:14px">List of computers that work and what frequency to try at <a href="https://github.com/fulldecent/system-bus-radio/blob/master/TEST-DATA.tsv">https://github.com/fulldecent/system-bus-radio/blob/master/TEST-DATA.tsv</a></div>
 	</div>

In Javascript/airgap.js

@@ -3,56 +3,43 @@
 //Tested to be working on Chrome at 1560khz
 
 function now() {
- return performance.now()*1000000;
+	return window.performance.now() * 1000000;
 }
 
 var NSEC_PER_SEC = 1000000000;
-var register = 3.1415
+var register = 3.1415;
 
-function square_am_signal(time,freq) {
-    document.getElementById('logs').value += "Playing / "+time+" seconds / "+freq+"Hz\n";
-    var period = NSEC_PER_SEC/freq;
-    var start = now();
-    var end = now()+time*NSEC_PER_SEC;
-    while (now() < end) {
-        var mid = start+period/2;
-        var reset = start+period;
-        while (now()<mid) {
-            for (i = 0; i < 100; i++) {
-                register = 1 - Math.log(register) / 1.7193
-            }
-        }
-        while(now() < reset){
-        }
-        start = reset
-    }
+function square_am_signal(time, freq) {
+	document.getElementById('logs').value += "Playing / " + time + " seconds / " + freq + "Hz\n";
+	var period = NSEC_PER_SEC / freq;
+	var start = now();
+	var end = now() + time * NSEC_PER_SEC;
+	while (now() < end) {
+		var mid = start + period / 2;
+		var reset = start + period;
+		while (now() < mid) {
+			for (var i = 0; i < 100; i++) {
+				register = 1 - Math.log(register) / 1.7193;
+			}
+		}
+		while (now() < reset) {}
+		start = reset;
+	}
 }
 
 function start() {
-    square_am_signal(0.400, 2673);
-    square_am_signal(0.400, 2349);
-    square_am_signal(0.400, 2093);
-    square_am_signal(0.400, 2349);
-    square_am_signal(0.400, 2673);
-    square_am_signal(0.400, 2673);
-    square_am_signal(0.790, 2673);
-    square_am_signal(0.400, 2349);
-    square_am_signal(0.400, 2349);
-    square_am_signal(0.790, 2349);
-    square_am_signal(0.400, 2673);
-    square_am_signal(0.400, 3136);
-    square_am_signal(0.790, 3136);
-    square_am_signal(0.400, 2673);
-    square_am_signal(0.400, 2349);
-    square_am_signal(0.400, 2093);
-    square_am_signal(0.400, 2349);
-    square_am_signal(0.400, 2673);
-    square_am_signal(0.400, 2673);
-    square_am_signal(0.400, 2673);
-    square_am_signal(0.400, 2673);
-    square_am_signal(0.400, 2349);
-    square_am_signal(0.400, 2349);
-    square_am_signal(0.400, 2673);
-    square_am_signal(0.400, 2349);
-    square_am_signal(0.790, 2093);
+	var song = document.getElementById("tones").value.split("\n");
+	var length = song.length;
+	var line, time, freq;
+	for (var i = 0; i < length; i++) {
+		line = song[i].split(" ");
+		if (line[1] == "0") {
+			// delay
+		}
+		else {
+			freq = +line[1];
+			time = +line[0];
+			square_am_signal(time, freq);
+		}
+	}
 }

In Javascript/main.css

@@ -97,4 +97,15 @@ input[type="text"]:focus ,input[type="password"]:focus,textarea:focus,select:foc
 input, textarea, keygen, select, button, isindex {
     outline:none;
     resize: none;
+}
+a
+{
+    color: white;
+    font-weight:bold;
+    background-color: rgba(220, 220, 220, 0.35);
+    text-decoration:none;
+}
+a:hover
+{
+    background-color: rgba(240, 240, 240, 0.52);
 }