Monkeypatch canPlayType on Android 4.0+ for HLS

src/js/media/html5.js

@@ -266,6 +266,55 @@ vjs.Html5.canControlVolume = function(){
   return volume !== vjs.TEST_VID.volume;
 };
 
+// HTML5 Feature detection and Device Fixes --------------------------------- //
+(function() {
+  var canPlayType,
+      mpegurlRE = /^application\/(?:x-|vnd\.apple\.)mpegurl$/i,
+      mp4RE = /^video\/mp4$/i;
+
+  vjs.Html5.patchCanPlayType = function() {
+    // Android 4.0 and above can play HLS to some extent but it reports being unable to do so
+    if (vjs.ANDROID_VERSION >= 4.0) {
+      if (!canPlayType) {
+        canPlayType = vjs.TEST_VID.constructor.prototype.canPlayType;
+      }
+
+      vjs.TEST_VID.constructor.prototype.canPlayType = function(type) {
+        if (type && mpegurlRE.test(type)) {
+          return "maybe";
+        }
+        return canPlayType.call(this, type);
+      };
+    }
+
+    // Override Android 2.2 and less canPlayType method which is broken
+    if (vjs.IS_OLD_ANDROID) {
+      if (!canPlayType) {
+        canPlayType = vjs.TEST_VID.constructor.prototype.canPlayType;
+      }
+
+      vjs.TEST_VID.constructor.prototype.canPlayType = function(type){
+        if (type && mp4RE.test(type)) {
+          return "maybe";
+        }
+        return canPlayType.call(this, type);
+      };
+    }
+  };
+
+  vjs.Html5.unpatchCanPlayType = function() {
+    var r = canPlayType;
+    if (canPlayType) {
+      vjs.TEST_VID.constructor.prototype.canPlayType = canPlayType;
+      canPlayType = null;
+      return r;
+    }
+  };
+
+  // by default, patch the video element
+  vjs.Html5.patchCanPlayType();
+})();
+
 // List of all HTML5 events (various uses).
 vjs.Html5.Events = 'loadstart,suspend,abort,error,emptied,stalled,loadedmetadata,loadeddata,canplay,canplaythrough,playing,waiting,seeking,seeked,ended,durationchange,timeupdate,progress,play,pause,ratechange,volumechange'.split(',');
 
@@ -300,12 +349,3 @@ vjs.Html5.disposeMediaElement = function(el){
     })();
   }
 };
-
-// HTML5 Feature detection and Device Fixes --------------------------------- //
-
-  // Override Android 2.2 and less canPlayType method which is broken
-if (vjs.IS_OLD_ANDROID) {
-  document.createElement('video').constructor.prototype.canPlayType = function(type){
-    return (type && type.toLowerCase().indexOf('video/mp4') != -1) ? 'maybe' : '';
-  };
-}

test/unit/media.html5.js

@@ -1,5 +1,7 @@
 module('HTML5');
 
+var oldAndroidVersion;
+
 test('should detect whether the volume can be changed', function(){
   var testVid, ConstVolumeVideo;
   if (!{}['__defineSetter__']) {
@@ -38,3 +40,52 @@ test('should re-link the player if the tech is moved', function(){
 
   strictEqual(player, tech.el()['player']);
 });
+
+test('patchCanPlayType patches canplaytype with our function, conditionally', function() {
+  var oldAV = vjs.ANDROID_VERSION,
+      video = document.createElement('video'),
+      canPlayType = vjs.TEST_VID.constructor.prototype.canPlayType,
+      patchCanPlayType,
+      unpatchedCanPlayType;
+
+  vjs.ANDROID_VERSION = 4.0;
+  vjs.Html5.patchCanPlayType();
+
+  notStrictEqual(video.canPlayType, canPlayType, 'original canPlayType and patched canPlayType should not be equal');
+
+  patchCanPlayType = video.canPlayType;
+  unpatchedCanPlayType = vjs.Html5.unpatchCanPlayType();
+
+  strictEqual(video.canPlayType, vjs.TEST_VID.constructor.prototype.canPlayType, 'original canPlayType and unpatched canPlayType should be equal');
+
+  vjs.ANDROID_VERSION = oldAV;
+});
+
+test('should return maybe for HLS urls on Android 4.0 or above', function() {
+  var oldAV = vjs.ANDROID_VERSION,
+      video = document.createElement('video');
+
+  vjs.ANDROID_VERSION = 4.0;
+  vjs.Html5.patchCanPlayType();
+
+  strictEqual(video.canPlayType('application/x-mpegurl'), 'maybe', 'android version 4.0 or above should be a maybe for x-mpegurl');
+  strictEqual(video.canPlayType('application/x-mpegURL'), 'maybe', 'android version 4.0 or above should be a maybe for x-mpegURL');
+  strictEqual(video.canPlayType('application/vnd.apple.mpegurl'), 'maybe', 'android version 4.0 or above should be a maybe for vnd.apple.mpegurl');
+  strictEqual(video.canPlayType('application/vnd.apple.mpegURL'), 'maybe', 'android version 4.0 or above should be a maybe for vnd.apple.mpegurl');
+
+  vjs.ANDROID_VERSION = oldAV;
+  vjs.Html5.unpatchCanPlayType();
+});
+
+test('should return a maybe for mp4 on OLD ANDROID', function() {
+  var isOldAndroid = vjs.IS_OLD_ANDROID,
+      video = document.createElement('video');
+
+  vjs.IS_OLD_ANDROID = true;
+  vjs.Html5.patchCanPlayType();
+
+  strictEqual(video.canPlayType('video/mp4'), 'maybe', 'old android should return a maybe for video/mp4');
+
+  vjs.IS_OLD_ANDROID = isOldAndroid;
+  vjs.Html5.unpatchCanPlayType();
+});