videocontext - npm Package Compare versions

Comparing version 0.34.4 to 0.35.0

package.json

 {
   "name": "videocontext",
-  "version": "0.34.4",
+  "version": "0.35.0",
   "description": "A WebGL & HTML5 graph based video composition library",
@@ -5,0 +5,0 @@ "keywords":["video", "context", "composition", "timeline", "html5", "webgl"],

src/graphnode.js

@@ -10,2 +10,3 @@ //Matthew Shotton, R&D User Experience,© BBC 2015
         this._inputNames = inputNames;
+        this._destroyed = false;
 
@@ -57,3 +58,12 @@ //Setup WebGL output texture
 
+    /**
+    * Get whether the node has been destroyed or not.
+    *
+    * @return {boolean} A true/false value of whather the node has been destoryed or not.
+    */
+    get destroyed(){
+        return this._destroyed;
+    }
 
+
     /**
@@ -85,2 +95,13 @@ * Connect this node to the targetNode
     }
+
+    /**
+    * Destory this node, removing it from the graph.
+    */
+    destroy(){
+        this.disconnect();
+        for (let input of this.inputs){
+            input.disconnect(this);
+        }
+        this._destroyed = true;
+    }
 }

src/SourceNodes/sourcenode.js

@@ -387,4 +387,22 @@ //Matthew Shotton, R&D User Experience,© BBC 2015
     }
+
+    /**
+    * Destroy and clean-up the node.
+    */
+    destroy(){
+        super.destroy();
+        this._triggerCallbacks("destroy");
+        this.unregisterCallback();
+        delete this._element;
+        this._elementURL = undefined;
+        this._state = STATE.waiting;
+        this._currentTime = 0;
+        this._startTime = NaN;
+        this._stopTime = Infinity;
+        this._ready = false;
+        this._loadCalled = false;
+        this._texture = undefined;
+    }
 }
 
 export {STATE as SOURCENODESTATE};

src/SourceNodes/videonode.js

@@ -178,2 +178,9 @@ //Matthew Shotton, R&D User Experience,© BBC 2015
 
+    destroy(){
+        if (this._element) this._element.pause();
+        this._isElementPlaying = false;    
+        super.destroy();
+        this._destroy();
+    }
+
 }

src/videocontext.js

@@ -706,2 +706,13 @@ //Matthew Shotton, R&D User Experience,© BBC 2015
     _update(dt){
+        //Remove any destroyed nodes
+
+        this._sourceNodes = this._sourceNodes.filter(sourceNode=>{
+            if (!sourceNode.destroyed) return sourceNode;
+        });
+        
+        this._processingNodes = this._processingNodes.filter(processingNode=>{
+            if (!processingNode.destroyed) return processingNode;
+        });
+        
+
         if (this._state === VideoContext.STATE.PLAYING || this._state === VideoContext.STATE.STALLED || this._state === VideoContext.STATE.PAUSED) {
@@ -827,2 +838,31 @@ this._callCallbacks("update");
 
+    /**
+    * Destroy all nodes in the graph and reset the timeline. After calling this any created nodes will be unusable.
+    */
+    reset(){
+        for (let callback of this._callbacks){
+            this.unregisterCallback(callback);
+        }
+        for (let node of this._sourceNodes){
+            node.destroy();
+        }
+        for (let node of this._processingNodes){
+            node.destroy();
+        }
+        this._update(0);
+        this._sourceNodes = [];
+        this._processingNodes = [];
+        this._timeline = [];
+        this._currentTime = 0;
+        this._state = VideoContext.STATE.PAUSED;
+        this._playbackRate = 1.0;
+        this._sourcesPlaying = undefined;
+        this._callbacks.set("stalled", []);
+        this._callbacks.set("update", []);
+        this._callbacks.set("ended", []);
+        this._callbacks.set("content", []);
+        this._callbacks.set("nocontent", []);
+        this._timelineCallbacks = [];
+    }
+
     _depricate(msg){
@@ -829,0 +869,0 @@ console.log(msg);

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Improved metrics

Total package byte prevSize

6647939

increased by0.84%

Lines of code

25097

increased by2.99%

No dependency changes