successful ytmnd playback

tv/js/audio.js

@@ -2,9 +2,10 @@ var audio = (function(){
 
   var audio = {}
 
-  var context = new webkitAudioContext()
+  var context = new AudioContext()
   var source
   var current = ""
+  var timeout
   
   var bufs = {}
   var sources = {}
@@ -12,7 +13,7 @@ var audio = (function(){
   audio.preload = function(site, loader){
     loader.register(site.domain + "_sound")
     var request = new XMLHttpRequest()
-    request.open('GET', url, true) 
+    request.open('GET', site.sound_url, true) 
     request.responseType = 'arraybuffer'
     request.onload = function() {
       context.decodeAudioData(request.response, function(buf) {
@@ -20,30 +21,81 @@ var audio = (function(){
         loader.ready(site.domain + "_sound")
       }, function () { console.error('The request failed.') } )
     }
+    request.onerror = function() {
+      ytmnd.error()
+    }
     request.send()
   }
+  
+  audio.loaded = function(domain){
+    return (domain in bufs)
+  }
 
-  audio.play = function(domain){
+  audio.make_source = function(domain){
     var buf = bufs[domain]    
     var source = context.createBufferSource()
     source.connect(context.destination)
     source.buffer = buf
-    source.start(0)
     
     sources[domain] = sources[domain] || []
     sources[domain].push(source)
+    return source
   }
   
-/*
+  audio.play = function(domain){
+    console.log("play", domain)
+    
+    current = domain
+    
+    var source
+    
+    var startTime = context.currentTime
+    var delay
+    
+    clearTimeout(timeout);
+
     (function loop(){
       if (source) {
-        source.start(0)
-        setTimeout(loop, source.buffer.duration * 1000 - (source.buffer.duration < 2 ? 0 : 60) )
+        var dt = context.currentTime - startTime
+        console.log("got a source", dt, delay)
+        if (dt > 20) {
+          ytmnd.next()
+        }
+        else {
+          timeout = setTimeout(loop, delay)
+          source.start(0)
+          source.started = true
+          source = audio.make_source(domain)
+        }
       }
       else {
-        setTimeout(loop, 0)
+        timeout = setTimeout(loop, 0)
+        source = audio.make_source(domain)
+        delay = source.buffer.duration * 1000 - (source.buffer.duration < 2 ? 0 : 60)
       }
     })()
-*/
+    
+  }
+  
+  audio.stop_current = function(){
+    audio.stop(current)
+    current = ""
+  }
+  
+  audio.stop = function(domain){
+    if (! sources[domain]) return
+
+    clearTimeout(timeout)
+
+    sources[domain].forEach(function(source){
+      if (source.started) {
+        source.stop(0)
+      }
+    })
+    sources[domain] = []
+    delete bufs[domain]
+  }
+  
+  return audio
 
 })()