Added CVProcessor interface.

src/ve/ucv/ciens/ccg/nxtar/NxtARCore.java

@@ -15,6 +15,7 @@
  */
 package ve.ucv.ciens.ccg.nxtar;
 
+import ve.ucv.ciens.ccg.nxtar.interfaces.CVProcessor;
 import ve.ucv.ciens.ccg.nxtar.interfaces.MulticastEnabler;
 import ve.ucv.ciens.ccg.nxtar.interfaces.NetworkConnectionListener;
 import ve.ucv.ciens.ccg.nxtar.interfaces.Toaster;
@@ -90,6 +91,7 @@ public class NxtARCore extends Game implements NetworkConnectionListener{
 
 	// Assorted fields.
 	public SpriteBatch batch;
+	public CVProcessor cvProc;
 	private Toaster toaster;
 
 	// Networking related fields.
@@ -130,6 +132,13 @@ public class NxtARCore extends Game implements NetworkConnectionListener{
 			Gdx.app.error(TAG, CLASS_NAME + ".Main() :: concreteApp does not implement MulticastEnabler. Quitting.");
 			Gdx.app.exit();
 		}
+
+		try{
+			this.cvProc = (CVProcessor)concreteApp;
+		}catch(ClassCastException cc){
+			Gdx.app.error(TAG, CLASS_NAME + ".Main() :: concreteApp does not implement the CVProcessor interface. Quitting.");
+			Gdx.app.exit();
+		}
 	}
 
 	public void create(){

src/ve/ucv/ciens/ccg/nxtar/interfaces/CVProcessor.java

@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2014 Miguel Angel Astor Romero
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ve.ucv.ciens.ccg.nxtar.interfaces;
+
+public interface CVProcessor {
+	public class CVData{
+		public byte[] outFrame;
+		public int[] markerCodes;
+		// TODO: Add marker location data.
+	}
+
+	public CVData processFrame(byte[] frame, int w, int h);
+}

src/ve/ucv/ciens/ccg/nxtar/states/InGameState.java

@@ -21,6 +21,7 @@ import ve.ucv.ciens.ccg.networkdata.MotorEvent;
 import ve.ucv.ciens.ccg.networkdata.MotorEvent.motor_t;
 import ve.ucv.ciens.ccg.nxtar.NxtARCore;
 import ve.ucv.ciens.ccg.nxtar.NxtARCore.game_states_t;
+import ve.ucv.ciens.ccg.nxtar.interfaces.CVProcessor.CVData;
 import ve.ucv.ciens.ccg.nxtar.network.monitors.MotorEventQueue;
 import ve.ucv.ciens.ccg.nxtar.network.monitors.VideoFrameMonitor;
 import ve.ucv.ciens.ccg.nxtar.utils.ProjectConstants;
@@ -152,9 +153,11 @@ public class InGameState extends BaseState{
 
 	@Override
 	public void render(float delta){
+		int fW, fH;
 		byte[] frame;
 		byte[] prevFrame = null;
 		Size dimensions = null;
+		CVData data;
 
 		Gdx.gl.glClearColor(1, 1, 1, 1);
 		Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
@@ -170,9 +173,20 @@ public class InGameState extends BaseState{
 		}core.batch.end();
 
 		frame = frameMonitor.getCurrentFrame();
-		if(frame != null && !Arrays.equals(frame, prevFrame)){
+		fW = frameMonitor.getFrameDimensions().getWidth();
+		fH = frameMonitor.getFrameDimensions().getHeight();
+
+		data = core.cvProc.processFrame(frame, fW, fH);
+
+		if(data != null){
+			for(int i = 0; i < data.markerCodes.length; i++){
+				Gdx.app.log(TAG, CLASS_NAME + String.format(".render(): Marker code[%d] = %d", i, data.markerCodes[i]));
+			}
+		}
+
+		if(data != null && data.outFrame != null && !Arrays.equals(frame, prevFrame)){
 			dimensions = frameMonitor.getFrameDimensions();
-			videoFrame = new Pixmap(frame, 0, dimensions.getWidth() * dimensions.getHeight());
+			videoFrame = new Pixmap(data.outFrame, 0, dimensions.getWidth() * dimensions.getHeight());
 			videoFrameTexture = new Texture(videoFrame);
 			videoFrameTexture.setFilter(TextureFilter.Linear, TextureFilter.Linear);
 			videoFrame.dispose();