1 files changed, 23 insertions, 13 deletions

diff --git a/src/library_openal.js b/src/library_openal.js
index ac49fe95..58b11607 100644
--- a/src/library_openal.js
+++ b/src/library_openal.js
@@ -58,9 +58,21 @@ var LibraryOpenAL = {
           entry.src = AL.currentContext.ctx.createBufferSource();
           entry.src.buffer = entry.buffer;
           entry.src.connect(src.gain);
-          entry.src.start(startTime, offset);
-          
+          if (typeof(entry.src.start) !== 'undefined') {
+            entry.src.start(startTime, offset);
+          } else if (typeof(entry.src.noteOn) !== 'undefined') {
+            entry.src.noteOn(startTime);
 #if OPENAL_DEBUG
+            if (offset > 0) {
+              Runtime.warnOnce('The current browser does not support AudioBufferSourceNode.start(when, offset); method, so cannot play back audio with an offset '+offset+' secs! Audio glitches will occur!');
+            }
+#endif
+          }
+#if OPENAL_DEBUG
+          else {
+            Runtime.warnOnce('Unable to start AudioBufferSourceNode playback! Not supported by the browser?');
+          }
+
           console.log('updateSource queuing buffer ' + i + ' for source ' + idx + ' at ' + startTime + ' (offset by ' + offset + ')');
 #endif
         }
@@ -174,15 +186,14 @@ var LibraryOpenAL = {
   },
 
   alcOpenDevice: function(deviceName) {
-    if (typeof(AudioContext) == "function" ||
-        typeof(webkitAudioContext) == "function") {
+    if (typeof(AudioContext) !== "undefined" ||
+        typeof(webkitAudioContext) !== "undefined") {
       return 1; // non-null pointer -- we just simulate one device
     } else {
       return 0;
     }
   },
 
-  alcCreateContext__deps: ['updateSources'],
   alcCreateContext: function(device, attrList) {
     if (device != 1) {
       return 0;
@@ -205,6 +216,9 @@ var LibraryOpenAL = {
     }
 
     if (ctx) {
+      // Old Web Audio API (e.g. Safari 6.0.5) had an inconsistently named createGainNode function.
+      if (typeof(ctx.createGain) === 'undefined') ctx.createGain = ctx.createGainNode;
+
       var gain = ctx.createGain();
       gain.connect(ctx.destination);
       var context = {
@@ -386,7 +400,6 @@ var LibraryOpenAL = {
     }
   },
 
-  alSourcei__deps: ['updateSource'],
   alSourcei: function(source, param, value) {
     if (!AL.currentContext) {
 #if OPENAL_DEBUG
@@ -558,7 +571,6 @@ var LibraryOpenAL = {
       {{{ makeGetValue('value', '8', 'float') }}});
   },
 
-  alSourceQueueBuffers__deps: ["updateSource"],
   alSourceQueueBuffers: function(source, count, buffers) {
     if (!AL.currentContext) {
 #if OPENAL_DEBUG
@@ -594,7 +606,6 @@ var LibraryOpenAL = {
     AL.updateSource(src);
   },
 
-  alSourceUnqueueBuffers__deps: ["updateSource"],
   alSourceUnqueueBuffers: function(source, count, buffers) {
     if (!AL.currentContext) {
 #if OPENAL_DEBUG
@@ -860,7 +871,6 @@ var LibraryOpenAL = {
     AL.setSourceState(src, 0x1013 /* AL_PAUSED */);
   },
 
-  alGetSourcei__deps: ['updateSource'],
   alGetSourcei: function(source, param, value) {
     if (!AL.currentContext) {
 #if OPENAL_DEBUG
@@ -1288,16 +1298,16 @@ var LibraryOpenAL = {
       ret = 'Out of Memory';
       break;
     case 0x1004 /* ALC_DEFAULT_DEVICE_SPECIFIER */:
-      if (typeof(AudioContext) == "function" ||
-          typeof(webkitAudioContext) == "function") {
+      if (typeof(AudioContext) !== "undefined" ||
+          typeof(webkitAudioContext) !== "undefined") {
         ret = 'Device';
       } else {
         return 0;
       }
       break;
     case 0x1005 /* ALC_DEVICE_SPECIFIER */:
-      if (typeof(AudioContext) == "function" ||
-          typeof(webkitAudioContext) == "function") {
+      if (typeof(AudioContext) !== "undefined" ||
+          typeof(webkitAudioContext) !== "undefined") {
         ret = 'Device\0';
       } else {
         ret = '\0';