CB-13445 (iOS) Streaming media can take up to 8-10 seconds to start (#169)

* iOS streaming media can take up to 8-10 seconds to start. This fix allows streaming media to start right away. Caveat: on a slow internet connection there might be pauses for buffering (depends on size+length of media).

* include check for iOS version so we don\'t break iOS<10. Thanks @ghenry22

* bump travis CI xcode versions

Author: purplecabbage

.travis.yml

@@ -26,12 +26,12 @@ matrix:
     node_js: '6.14.2'
   - env: PLATFORM=ios-9.3
     os: osx
-    osx_image: xcode7.3
+    osx_image: xcode8.3
     language: node_js
     node_js: '6.14.2'
   - env: PLATFORM=ios-10.0
     os: osx
-    osx_image: xcode7.3
+    osx_image: xcode8.3
     language: node_js
     node_js: '6.14.2'
   - env: PLATFORM=android-4.4

src/ios/CDVSound.m

@@ -265,7 +265,11 @@ - (void)create:(CDVInvokedUrlCommand*)command
             // Pass the AVPlayerItem to a new player
             avPlayer = [[AVPlayer alloc] initWithPlayerItem:playerItem];
 
-            //avPlayer = [[AVPlayer alloc] initWithURL:resourceUrl];
+            // Avoid excessive buffering so streaming media can play instantly on iOS
+            // Removes preplay delay on ios 10+, makes consistent with ios9 behaviour
+            if ([NSProcessInfo.processInfo isOperatingSystemAtLeastVersion:(NSOperatingSystemVersion){10,0,0}]) {
+                avPlayer.automaticallyWaitsToMinimizeStalling = NO;
+            }
         }
 
         self.currMediaId = mediaId;