1 files changed, 155 insertions, 0 deletions
diff --git a/android/examples/CameraTest/src/net/sourceforge/zbar/android/CameraTest/CameraTestActivity.java b/android/examples/CameraTest/src/net/sourceforge/zbar/android/CameraTest/CameraTestActivity.java
new file mode 100644
index 0000000..e20bcad
--- /dev/null
+++ b/android/examples/CameraTest/src/net/sourceforge/zbar/android/CameraTest/CameraTestActivity.java
@@ -0,0 +1,155 @@
+/*
+ * Basic no frills app which integrates the ZBar barcode scanner with
+ * the camera.
+ *
+ * Created by lisah0 on 2012-02-24
+ */
+package net.sourceforge.zbar.android.CameraTest;
+
+import net.sourceforge.zbar.android.CameraTest.CameraPreview;
+
+import android.app.Activity;
+import android.content.pm.ActivityInfo;
+import android.os.Bundle;
+import android.os.Handler;
+import android.util.Log;
+
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.Window;
+import android.widget.FrameLayout;
+import android.widget.Button;
+
+import android.hardware.Camera;
+import android.hardware.Camera.PreviewCallback;
+import android.hardware.Camera.AutoFocusCallback;
+import android.hardware.Camera.Parameters;
+import android.hardware.Camera.Size;
+
+import android.widget.TextView;
+import android.graphics.ImageFormat;
+
+/* Import ZBar Class files */
+import net.sourceforge.zbar.ImageScanner;
+import net.sourceforge.zbar.Image;
+import net.sourceforge.zbar.Symbol;
+import net.sourceforge.zbar.SymbolSet;
+import net.sourceforge.zbar.Config;
+
+public class CameraTestActivity extends Activity
+{
+    private Camera mCamera;
+    private CameraPreview mPreview;
+    private Handler autoFocusHandler;
+
+    TextView scanText;
+    Button scanButton;
+
+    ImageScanner scanner;
+
+    private boolean barcodeScanned = false;
+    private boolean previewing = true;
+
+    static {
+        System.loadLibrary("iconv");
+    }
+
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.main);
+
+        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
+
+        autoFocusHandler = new Handler();
+        mCamera = getCameraInstance();
+
+        /* Instance barcode scanner */
+        scanner = new ImageScanner();
+        scanner.setConfig(0, Config.X_DENSITY, 3);
+        scanner.setConfig(0, Config.Y_DENSITY, 3);
+
+        mPreview = new CameraPreview(this, mCamera, previewCb, autoFocusCB);
+        FrameLayout preview = (FrameLayout)findViewById(R.id.cameraPreview);
+        preview.addView(mPreview);
+
+        scanText = (TextView)findViewById(R.id.scanText);
+
+        scanButton = (Button)findViewById(R.id.ScanButton);
+
+        scanButton.setOnClickListener(new OnClickListener() {
+                public void onClick(View v) {
+                    if (barcodeScanned) {
+                        barcodeScanned = false;
+                        scanText.setText("Scanning...");
+                        mCamera.setPreviewCallback(previewCb);
+                        mCamera.startPreview();
+                        previewing = true;
+                        mCamera.autoFocus(autoFocusCB);
+                    }
+                }
+            });
+    }
+
+    public void onPause() {
+        super.onPause();
+        releaseCamera();
+    }
+
+    /** A safe way to get an instance of the Camera object. */
+    public static Camera getCameraInstance(){
+        Camera c = null;
+        try {
+            c = Camera.open();
+        } catch (Exception e){
+        }
+        return c;
+    }
+
+    private void releaseCamera() {
+        if (mCamera != null) {
+            previewing = false;
+            mCamera.setPreviewCallback(null);
+            mCamera.release();
+            mCamera = null;
+        }
+    }
+
+    private Runnable doAutoFocus = new Runnable() {
+            public void run() {
+                if (previewing)
+                    mCamera.autoFocus(autoFocusCB);
+            }
+        };
+
+    PreviewCallback previewCb = new PreviewCallback() {
+            public void onPreviewFrame(byte[] data, Camera camera) {
+                Camera.Parameters parameters = camera.getParameters();
+                Size size = parameters.getPreviewSize();
+
+                Image barcode = new Image(size.width, size.height, "Y800");
+                barcode.setData(data);
+
+                int result = scanner.scanImage(barcode);
+
+                if (result != 0) {
+                    previewing = false;
+                    mCamera.setPreviewCallback(null);
+                    mCamera.stopPreview();
+
+                    SymbolSet syms = scanner.getResults();
+                    for (Symbol sym : syms) {
+                        scanText.setText("barcode result " + sym.getData());
+                        barcodeScanned = true;
+                    }
+                }
+            }
+        };
+
+    // Mimic continuous auto-focusing
+    AutoFocusCallback autoFocusCB = new AutoFocusCallback() {
+            public void onAutoFocus(boolean success, Camera camera) {
+                autoFocusHandler.postDelayed(doAutoFocus, 1000);
+            }
+        };
+}