videocontext - npm Package Compare versions

Comparing version 0.33.3 to 0.34.0

package.json

 {
   "name": "videocontext",
-  "version": "0.33.3",
+  "version": "0.34.0",
   "description": "A WebGL & HTML5 graph based video composition library",
@@ -5,0 +5,0 @@ "keywords":["video", "context", "composition", "timeline", "html5", "webgl"],

README.md

@@ -1,2 +0,2 @@
-#VideoContext
+# VideoContext
 The VideoContext is an experimental HTML5/WebGL media processing and sequencing library for creating interactive and responsive videos on the web.
@@ -453,2 +453,2 @@
 
-The library is written in es6 and cross-compiled using babel. 
+The library is written in es6 and cross-compiled using babel. 

src/videocontext.js

@@ -75,2 +75,3 @@ //Matthew Shotton, R&D User Experience,© BBC 2015
         this._playbackRate = 1.0;
+        this._sourcesPlaying = false;
         this._destinationNode = new DestinationNode(this._gl, this._renderGraph);
@@ -82,2 +83,4 @@
         this._callbacks.set("ended", []);
+        this._callbacks.set("content", []);
+        this._callbacks.set("nocontent", []);
 
@@ -120,7 +123,9 @@ this._timelineCallbacks = [];
     /**
-    * Regsiter a callback to listen to one of the following events: "stalled", "update", "ended"
+    * Regsiter a callback to listen to one of the following events: "stalled", "update", "ended", "content", "nocontent"
     *
     * "stalled" happend anytime playback is stopped due to unavailbale data for playing assets (i.e video still loading)
     * . "update" is called any time a frame is rendered to the screen. "ended" is called once plackback has finished
-    * (i.e ctx.currentTime == ctx.duration).
+    * (i.e ctx.currentTime == ctx.duration). "content" is called a the start of a time region where there is content 
+    * playing out of one or more sourceNodes. "nocontent" is called at the start of any time region where the 
+    * VideoContext is still playing, but there are currently no activly playing soureces.
     *
@@ -749,2 +754,4 @@ * @param {String} type - the event to register against ("stalled", "update", or "ended").
 
+            let sourcesPlaying = false;
+
             for (let i = 0; i < this._sourceNodes.length; i++) {
@@ -763,6 +770,18 @@ let sourceNode = this._sourceNodes[i];
                 sourceNode._update(this._currentTime);
+                if (sourceNode._state === SOURCENODESTATE.paused || sourceNode._state === SOURCENODESTATE.playing){
+                    sourcesPlaying = true;
+                }
             }
 
 
+            if (sourcesPlaying !== this._sourcesPlaying){
+                if (sourcesPlaying === true){
+                    this._callCallbacks("content");
+                }else{
+                    this._callCallbacks("nocontent");
+                }
+                this._sourcesPlaying = sourcesPlaying;
+            }
 
+
             /*
@@ -803,3 +822,2 @@ * Itterate the directed acyclic graph using Khan's algorithm (KHAAAAAN!).
             }
-
         }
@@ -806,0 +824,0 @@ }

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Improved metrics

Total package byte prevSize

6583842

increased by0.19%

Lines of code

24297

increased by0.35%

Number of lines in readme file

454

increased by0.22%

No dependency changes