// Javascript functions for controlling audio
-starttime = null;
-endtime = null;
+starttime = 0;
+endtime = 0;
+song = null;
+interval = null;
// Keycodes
spacebar = 32;
leftarrow = 37;
-uparrow = 38;
rightarrow = 39;
-downarrow = 40;
seta = 65;
-backfewsecs = 66;
+setb = 66;
cleara = 67;
-forwardfewsecs = 70;
return2start = 82;
howmanysecs = 10;
+function loop() {
+ // If endtime is not set then we can't loop
+ if (endtime == 0) return;
+
+ // if we're past the endtime then it's time to start back at the A marker
+ if (song.currentTime > endtime) song.currentTime = starttime;
+} // loop
+
window.onload = function() {
song = document.getElementById('song');
endtime = song.duration;
body = document.getElementsByTagName('body')[0]
+ if (!song.paused) {
+ // Set up loop
+ interval = setInterval(loop, 1000);
+ } // if
+
body.onkeydown =
function(e) {
var ev = e || event;
} // if
if (playing) {
+ // Stop loop
+ clearInterval(interval)
song.pause();
playing = false;
} else {
song.currentTime = starttime
} // if
+ // Set up loop
+ interval = setInterval(loop, 1000);
+
song.play();
playing = true;
} // if
e.preventDefault();
return;
- } else if (ev.keyCode == return2start || ev.keyCode == uparrow) {
+ } else if (ev.keyCode == return2start) {
if (starttime != null) {
song.currentTime = starttime;
} else {
} // if
return;
- } else if (ev.keyCode == backfewsecs || ev.keyCode == leftarrow) {
+ } else if (ev.keyCode == leftarrow) {
song.currentTime -= howmanysecs;
song.play()
return;
- } else if (ev.keyCode == forwardfewsecs || ev.keyCode == rightarrow) {
+ } else if (ev.keyCode == rightarrow) {
song.currentTime += howmanysecs;
song.play();
return;
} else if (ev.keyCode == seta) {
+ // Reset endtime if setting a new A marker
+ if (endtime != song.duration) endtime = song.duration;
+
starttime = song.currentTime;
+ // Translate seconds to timecode
+ document.getElementById('a').innerHTML = Math.floor(starttime / 60) + ':' + Math.floor(starttime % 60);
+
return;
+ } else if (ev.keyCode == setb) {
+ if (song.currentTime > starttime) {
+ endtime = song.currentTime;
+ document.getElementById('b').innerHTML = Math.floor(endtime / 60) + ':' + Math.floor(endtime % 60);
+ } // if
} else if (ev.keyCode == cleara) {
starttime = 0;
+ endtime = song.duration;
+
+ document.getElementById('a').innerHTML = '<font color=#666><i>not set</i></font>';
+ document.getElementById('b').innerHTML = '<font color=#666><i>not set</i></font>';
return;
} // if