支持识别反色码（#66,#69,#72）

lib/src/main/java/com/king/zxing/CaptureActivity.java

@@ -25,9 +25,12 @@ import com.king.zxing.camera.CameraManager;
 
 import androidx.annotation.LayoutRes;
 import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
 
-
+/**
-public class CaptureActivity extends Activity implements OnCaptureCallback{
+ * @author <a href="mailto:jenly1314@gmail.com">Jenly</a>
+ */
+public class CaptureActivity extends AppCompatActivity implements OnCaptureCallback{
 
     public static final String KEY_RESULT = Intents.Scan.RESULT;
 
@@ -114,9 +117,10 @@ public class CaptureActivity extends Activity implements OnCaptureCallback{
     }
 
     /**
-     * Get {@link CameraManager}
+     * Get {@link CameraManager} use {@link #getCaptureHelper()#getCameraManager()}
      * @return {@link #mCaptureHelper#getCameraManager()}
      */
+    @Deprecated
     public CameraManager getCameraManager(){
         return mCaptureHelper.getCameraManager();
     }

lib/src/main/java/com/king/zxing/CaptureFragment.java

@@ -127,9 +127,10 @@ public class CaptureFragment extends Fragment implements OnCaptureCallback {
     }
 
     /**
-     * Get {@link CameraManager}
+     * Get {@link CameraManager} use {@link #getCaptureHelper()#getCameraManager()}
      * @return {@link #mCaptureHelper#getCameraManager()}
      */
+    @Deprecated
     public CameraManager getCameraManager(){
         return mCaptureHelper.getCameraManager();
     }

lib/src/main/java/com/king/zxing/CaptureHandler.java

@@ -49,6 +49,11 @@ public class CaptureHandler extends Handler implements ResultPointCallback {
      */
     private boolean isSupportAutoZoom;
 
+    /**
+     *
+     */
+    private boolean isSupportLuminanceInvert;
+
 
     private enum State {
         PREVIEW,
@@ -198,4 +203,12 @@ public class CaptureHandler extends Handler implements ResultPointCallback {
     public void setSupportAutoZoom(boolean supportAutoZoom) {
         isSupportAutoZoom = supportAutoZoom;
     }
+
+    public boolean isSupportLuminanceInvert() {
+        return isSupportLuminanceInvert;
+    }
+
+    public void setSupportLuminanceInvert(boolean supportLuminanceInvert) {
+        isSupportLuminanceInvert = supportLuminanceInvert;
+    }
 }

lib/src/main/java/com/king/zxing/CaptureHelper.java

@@ -87,6 +87,11 @@ public class CaptureHelper implements CaptureLifecycle,CaptureTouchEvent,Capture
      */
     private boolean isSupportAutoZoom = true;
 
+    /**
+     * 是否支持识别颜色反转色的码，黑白颜色反转，默认不支持
+     */
+    private boolean isSupportLuminanceInvert = false;
+
     /**
      * 是否支持连扫，默认不支持
      */
@@ -334,6 +339,7 @@ public class CaptureHelper implements CaptureLifecycle,CaptureTouchEvent,Capture
                 captureHandler.setSupportVerticalCode(isSupportVerticalCode);
                 captureHandler.setReturnBitmap(isReturnBitmap);
                 captureHandler.setSupportAutoZoom(isSupportAutoZoom);
+                captureHandler.setSupportLuminanceInvert(isSupportLuminanceInvert);
             }
         } catch (IOException ioe) {
             Log.w(TAG, ioe);
@@ -718,9 +724,22 @@ public class CaptureHelper implements CaptureLifecycle,CaptureTouchEvent,Capture
         return this;
     }
 
+    /**
+     * 是否支持识别反色码，黑白颜色反转
+     * @param supportLuminanceInvert 默认为false，当返回true时表示支持，会增加识别率，但相应的也会增加性能消耗。
+     * @return
+     */
+    public CaptureHelper supportLuminanceInvert(boolean supportLuminanceInvert) {
+        isSupportLuminanceInvert = supportLuminanceInvert;
+        if(captureHandler!=null){
+            captureHandler.setSupportLuminanceInvert(isSupportLuminanceInvert);
+        }
+        return this;
+    }
+
     /**
      * 设置是否支持全屏扫码识别
-     * @param fullScreenScan
+     * @param fullScreenScan 默认为false
      * @return
      */
     public CaptureHelper fullScreenScan(boolean fullScreenScan) {

lib/src/main/java/com/king/zxing/DecodeHandler.java

@@ -102,32 +102,51 @@ final class DecodeHandler extends Handler {
         PlanarYUVLuminanceSource source = buildPlanarYUVLuminanceSource(data,width,height,isScreenPortrait);
 
         if (source != null) {
-            BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
+
+            boolean isReDecode;
             try {
+                BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
                 rawResult = multiFormatReader.decodeWithState(bitmap);
+                isReDecode = false;
             } catch (Exception e) {
-                BinaryBitmap bitmap1 = new BinaryBitmap(new GlobalHistogramBinarizer(source));
+                isReDecode = true;
+            }
+
+            if(isReDecode && handler.isSupportLuminanceInvert()){
+                try {
+                    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source.invert()));
+                    rawResult = multiFormatReader.decodeWithState(bitmap);
+                    isReDecode = false;
+                } catch (Exception e) {
+                    isReDecode = true;
+                }
+            }
+
+            if(isReDecode){
                 try{
-                    rawResult = multiFormatReader.decodeWithState(bitmap1);
+                    BinaryBitmap bitmap = new BinaryBitmap(new GlobalHistogramBinarizer(source));
-                }catch (Exception e1){
+                    rawResult = multiFormatReader.decodeWithState(bitmap);
-                    if(isSupportVerticalCode){
+                    isReDecode = false;
+                }catch (Exception e){
+                    isReDecode = true;
+                }
+            }
+
+            if(isReDecode && isSupportVerticalCode){
                 source = buildPlanarYUVLuminanceSource(data,width,height,!isScreenPortrait);
                 if(source!=null){
-                            BinaryBitmap bitmap2 = new BinaryBitmap(new HybridBinarizer(source));
                     try{
-                                rawResult = multiFormatReader.decodeWithState(bitmap2);
+                        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
-                            }catch (Exception e2){
+                        rawResult = multiFormatReader.decodeWithState(bitmap);
+                    }catch (Exception e){
 
                     }
                 }
 
             }
-                }
 
-            } finally {
             multiFormatReader.reset();
         }
-        }
 
         if (rawResult != null) {
             // Don't log the barcode contents for security.
@@ -157,7 +176,6 @@ final class DecodeHandler extends Handler {
                     }
                 }
 
-
             }
 
             if (handler != null) {
@@ -211,7 +229,7 @@ final class DecodeHandler extends Handler {
             return true;
         }
 
-        if(length<width/5){
+        if(length < width/ 5){
 
             Camera camera = cameraManager.getOpenCamera().getCamera();
             if(camera!=null){