Temporarily use the Haxe format library to handle PNG assets on native platforms

include.xml

@@ -7,7 +7,10 @@
 	
 	<section unless="display">
 		
+		<haxelib name="format" if="native" />
+		
 		<haxelib name="hxcpp" if="cpp" />
+		
 		<ndll name="std" haxelib="hxcpp" if="cpp" />
 		<ndll name="regexp" haxelib="hxcpp" if="cpp" />
 		<ndll name="zlib" haxelib="hxcpp" if="cpp" />

templates/haxe/DefaultAssetLibrary.hx

@@ -6,6 +6,7 @@ import haxe.Unserializer;
 import lime.app.Preloader;
 import lime.graphics.ImageData;
 import lime.utils.ByteArray;
+import lime.utils.UInt8Array;
 import lime.Assets;
 
 #if sys
@@ -209,7 +210,37 @@ class DefaultAssetLibrary extends AssetLibrary {
 		
 		#else
 		
-		return null;
+		// TODO: Implement in native backend
+		
+		var bytes = getBytes (id);
+		var byteInput = new haxe.io.BytesInput (bytes, 0, bytes.length);
+		var png = new format.png.Reader (byteInput).read ();
+		var data = format.png.Tools.extract32 (png);
+		var header = format.png.Tools.getHeader (png);
+		
+		var imageWidth = header.width;
+		var imageHeight = header.height;
+		var imageData = new UInt8Array (ByteArray.fromBytes (data));
+		
+		var imageLength = imageWidth * imageHeight;
+		var b, g, r, a;
+		
+        for (i in 0...imageLength) {
+        	
+            b = imageData[i * 4];
+            g = imageData[i * 4 + 1];
+            r = imageData[i * 4 + 2];
+            a = imageData[i * 4 + 3];
+
+            imageData[i * 4] = r;
+            imageData[i * 4 + 1] = g;
+            imageData[i * 4 + 2] = b;
+            imageData[i * 4 + 3] = a;
+            
+        }
+		
+		return new ImageData (imageData, imageWidth, imageHeight);
+		
 		//if (className.exists(id)) return cast (Type.createInstance (className.get (id), []), BitmapData);
 		//else return BitmapData.load (path.get (id));