fix visualizer mobile issues

public/index.js

@@ -63,6 +63,10 @@
   var user = {}
   var scrobbleTimeout
 
+  // Analyser
+  window.resumeAnalyzer = function () {}
+
+  // Mobile specific information
   window.mobilecheck = function() {
     var check = false;
     (function(a){if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0,4))) check = true;})(navigator.userAgent||navigator.vendor||window.opera);
@@ -70,25 +74,6 @@
   }
   window.isMobile = window.mobilecheck()
 
-  // Context bullshit
-  let playerContext = []
-
-  window.resumeAudioContexts = function () {
-    for (let i in playerContext) {
-      let ctx = playerContext[i]
-      if (ctx && ctx.resume) {
-        ctx.resume().catch(function (e) {
-          console.error(e)
-          alert('Failed to play:', e.message)
-        })
-      }
-    }
-  }
-
-  window.attachAudioContext = function (ctx) {
-    playerContext.push(ctx)
-  }
-
   // Seconds into HH:MM:SS
   function toHHMMSS (numbr) {
     let secNum = parseInt(numbr, 10) // don't forget the second param
@@ -195,9 +180,9 @@
       posx = e.pageX
       posy = e.pageY
     } else if (e.clientX || e.clientY) {
-      posx = e.clientX + document.body.scrollLeft + 
+      posx = e.clientX + document.body.scrollLeft +
                          document.documentElement.scrollLeft
-      posy = e.clientY + document.body.scrollTop + 
+      posy = e.clientY + document.body.scrollTop +
                          document.documentElement.scrollTop
     }
 
@@ -598,7 +583,7 @@
       playing.innerHTML = title
       document.title = title
 
-      window.resumeAudioContexts()
+      window.resumeAnalyzer()
 
       externalStream = (data.external === true)
       audio.src = data.play_url || ('/api/serve/by-id/' + id)

public/player.js

@@ -12,8 +12,6 @@
   var volBar = document.querySelector('#player-volbar .seek-inner')
   var volElem = document.querySelector('.volume')
 
-  var playerContext = []
-
   // Seconds into HH:MM:SS
   function toHHMMSS (numbr) {
     let secNum = parseInt(numbr, 10) // don't forget the second param
@@ -170,7 +168,7 @@
   audio.addEventListener('stop', togglePlayButton, false)
 
   play.addEventListener('click', function (e) {
-    window.resumeAudioContexts()
+    window.resumeAnalyzer()
     if (audio.paused) {
       audio.play()
     } else {

public/visuals.js

@@ -2,13 +2,38 @@
   var audio = document.querySelector('#player')
   var canvas = document.querySelector('#visualizer')
   var playbar = document.querySelector('.playing-bar')
-
-  var context = new AudioContext()
-  var src = context.createMediaElementSource(audio)
-  var analyser = context.createAnalyser()
-
   var ctx = canvas.getContext('2d')
 
+  var context
+  var src
+  var analyser
+
+  var bufferLength
+
+  var dataArray
+
+  var barHeight
+  var x = 0
+
+  function start () {
+    context = new AudioContext()
+    src = context.createMediaElementSource(audio)
+    analyser = context.createAnalyser()
+
+    src.connect(analyser)
+    analyser.connect(context.destination)
+
+    analyser.fftSize = 256
+    bufferLength = analyser.frequencyBinCount
+    dataArray = new Uint8Array(bufferLength)
+
+    if (!analyser.getByteFrequencyData) {
+      console.error('This browser sucks. No visualizer for you :(')
+      return
+    }
+    renderFrame()
+  }
+
   var WIDTH = canvas.width
   var HEIGHT = canvas.height
 
@@ -22,18 +47,6 @@
     HEIGHT = canvas.height
   }
 
-  src.connect(analyser)
-  analyser.connect(context.destination)
-
-  analyser.fftSize = 256
-
-  var bufferLength = analyser.frequencyBinCount
-
-  var dataArray = new Uint8Array(bufferLength)
-
-  var barHeight
-  var x = 0
-
   function renderFrame () {
     requestAnimationFrame(renderFrame)
     barWidth = (WIDTH / bufferLength) * 2.5
@@ -51,7 +64,7 @@
       var g = barHeight + (i / bufferLength)
       var b = 250 * (i / bufferLength)
 
-      let realAdjusted = barHeight * (HEIGHT / analyser.fftSize)
+      const realAdjusted = barHeight * (HEIGHT / analyser.fftSize)
 
       ctx.fillStyle = 'rgb(' + r + ',' + g + ',' + b + ')'
       ctx.fillRect(x, HEIGHT - realAdjusted, barWidth, realAdjusted)
@@ -60,10 +73,11 @@
     }
   }
 
-  renderFrame()
-
   window.addEventListener('resize', convenientSizer)
-  window.attachAudioContext(context)
+  window.resumeAnalyzer = function () {
+    if (!context) start()
+    return context
+  }
 
   convenientSizer()
 })()