White Balance support

README.md

@@ -21,6 +21,7 @@ CameraKit is an easy to use utility to work with the Android Camera APIs. Everyt
   - [cameraZoomMode](#camerazoommode)
   - [cameraCropOutput](#cameracropoutput)
   - [cameraJpegQuality](#camerajpegquality)
+  - [cameraWhiteBalance](#camerawhitebalance)
 - [Permissions Behavior](#permissions-behavior)
 - [Dynamic Sizing Behavior](#dynamic-sizing-behavior)
   - [Center Crop](#center-crop)
@@ -38,6 +39,9 @@ CameraKit is an easy to use utility to work with the Android Camera APIs. Everyt
   - `CAPTURE_METHOD_STANDARD`: an image captured normally using the camera APIs.
   - `CAPTURE_METHOD_FRAME`: a freeze frame of the `CameraView` preview (similar to SnapChat and Instagram) for devices with slower cameras
 - Built-in tap to focus
+- EXIF support
+  - Automatically detected orientation tag
+  - Plug in location tags with `CameraView.setLocation(double, double)`
 - TODO: Built-in pinch to zoom
 
 ## Setup
@@ -157,6 +161,7 @@ camera.setCameraListener(new CameraListener() {
     app:cameraCropOutput="true"  
     app:cameraJpegQuality="100"
     app:cameraVideoQuality="480p"
+    app:cameraWhiteBalance="auto"
     android:adjustViewBounds="true" />
 ```
 
@@ -171,6 +176,7 @@ camera.setCameraListener(new CameraListener() {
 |[`cameraCropOutput`](#cameracropoutput)|`setCropOutput()`|`true` `false`|`false`|
 |[`cameraJpegQuality`](#camerajpegquality)|`setJpegQuality()`|`0 <= n <= 100`|`100`|
 |[`cameraVideoQuality`](#cameravideoquality)|`setVideoQuality()`|`max480p` `max720p` `max1080p` `max2160p` `highest` `lowest`|`max480p`|
+|[`cameraWhiteBalance`](#camerawhitebalance)|`setWhiteBalance()`|`auto` `incandescent` `fluorescent` `daylight` `cloudy`|`auto`|
 
 
 ### cameraFacing
@@ -261,6 +267,18 @@ cameraView.setVideoQuality(CameraKit.Constants.VIDEO_QUALITY_HIGHEST);
 cameraView.setVideoQuality(CameraKit.Constants.VIDEO_QUALITY_QVGA);
 ```
 
+### cameraWhiteBalance
+
+Sets the desired white balance for the current session.
+
+```java
+cameraView.setWhiteBalance(CameraKit.Constants.WHITE_BALANCE_AUTO);
+cameraView.setWhiteBalance(CameraKit.Constants.WHITE_BALANCE_INCANDESCENT);
+cameraView.setWhiteBalance(CameraKit.Constants.WHITE_BALANCE_FLUORESCENT);
+cameraView.setWhiteBalance(CameraKit.Constants.WHITE_BALANCE_DAYLIGHT);
+cameraView.setWhiteBalance(CameraKit.Constants.WHITE_BALANCE_CLOUDY);
+```
+
 ## Permissions behavior
 
 `CameraView` needs two permissions:

camerakit/src/main/api16/com/flurgle/camerakit/Camera1.java

@@ -18,12 +18,12 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 
-import static com.flurgle.camerakit.CameraKit.Constants.FLASH_OFF;
 import static com.flurgle.camerakit.CameraKit.Constants.FOCUS_CONTINUOUS;
 import static com.flurgle.camerakit.CameraKit.Constants.FOCUS_OFF;
 import static com.flurgle.camerakit.CameraKit.Constants.FOCUS_TAP;
 import static com.flurgle.camerakit.CameraKit.Constants.CAPTURE_METHOD_STANDARD;
 import static com.flurgle.camerakit.CameraKit.Constants.CAPTURE_METHOD_FRAME;
+import static com.flurgle.camerakit.CameraKit.Constants.FOCUS_TAP_WITH_MARKER;
 
 @SuppressWarnings("deprecation")
 class Camera1 extends CameraImpl {
@@ -37,7 +37,7 @@ class Camera1 extends CameraImpl {
     private int mCameraId;
     private Camera mCamera;
     private Camera.Parameters mCameraParameters;
-    private CameraProperties mCameraProperties;
+    private ExtraProperties mExtraProperties;
     private Camera.CameraInfo mCameraInfo;
     private Size mPreviewSize;
     private Size mCaptureSize;
@@ -56,10 +56,12 @@ class Camera1 extends CameraImpl {
     @Method private int mMethod;
     @ZoomMode private int mZoom;
     @VideoQuality private int mVideoQuality;
+    @WhiteBalance private int mWhiteBalance;
     private double mLatitude;
     private double mLongitude;
 
     private Handler mHandler = new Handler();
+    private ConstantMapper.MapperImpl mMapper = new ConstantMapper.Mapper1();
 
     Camera1(CameraListener callback, PreviewImpl preview) {
         super(callback, preview);
@@ -136,11 +138,7 @@ class Camera1 extends CameraImpl {
 
     @Override
     void setFacing(@Facing int facing) {
-        int internalFacing = new ConstantMapper.Facing(facing).map();
-        if (internalFacing == -1) {
-            return;
-        }
-
+        int internalFacing = mMapper.mapFacing(facing);
         for (int i = 0, count = Camera.getNumberOfCameras(); i < count; i++) {
             Camera.getCameraInfo(i, mCameraInfo);
             if (mCameraInfo.facing == internalFacing) {
@@ -157,31 +155,43 @@ class Camera1 extends CameraImpl {
         }
     }
 
+    @Override
+    void setWhiteBalance(@WhiteBalance int whiteBalance) {
+        int old = mWhiteBalance;
+        mWhiteBalance = whiteBalance;
+        if (mCameraParameters != null) {
+            List<String> supported = mCameraParameters.getSupportedWhiteBalance();
+            String internal = mMapper.mapWhiteBalance(whiteBalance);
+            if (supported != null && supported.contains(internal)) {
+                mCameraParameters.setWhiteBalance(internal);
+                mCamera.setParameters(mCameraParameters);
+            } else {
+                mWhiteBalance = old;
+            }
+        }
+    }
+
     @Override
     void setFlash(@Flash int flash) {
+        int old = mFlash;
+        mFlash = flash;
         if (mCameraParameters != null) {
             List<String> flashes = mCameraParameters.getSupportedFlashModes();
-            String internalFlash = new ConstantMapper.Flash(flash).map();
+            String internalFlash = mMapper.mapFlash(flash);
             if (flashes != null && flashes.contains(internalFlash)) {
                 mCameraParameters.setFlashMode(internalFlash);
-                mFlash = flash;
+                mCamera.setParameters(mCameraParameters);
             } else {
-                String currentFlash = new ConstantMapper.Flash(mFlash).map();
-                if (flashes == null || !flashes.contains(currentFlash)) {
-                    mCameraParameters.setFlashMode(Camera.Parameters.FLASH_MODE_OFF);
-                    mFlash = FLASH_OFF;
-                }
+                mFlash = old;
             }
-
-            mCamera.setParameters(mCameraParameters);
-        } else {
-            mFlash = flash;
         }
     }
 
+
     @Override
     void setFocus(@Focus int focus) {
-        this.mFocus = focus;
+        int old = mFocus;
+        mFocus = focus;
         switch (focus) {
             case FOCUS_CONTINUOUS:
                 if (mCameraParameters != null) {
@@ -190,17 +200,20 @@ class Camera1 extends CameraImpl {
                     if (modes.contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE)) {
                         mCameraParameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
                     } else {
-                        setFocus(FOCUS_OFF);
+                        mFocus = old;
                     }
                 }
                 break;
 
             case FOCUS_TAP:
+            case FOCUS_TAP_WITH_MARKER:
                 if (mCameraParameters != null) {
                     attachFocusTapListener();
                     final List<String> modes = mCameraParameters.getSupportedFocusModes();
                     if (modes.contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE)) {
                         mCameraParameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
+                    } else {
+                        mFocus = old;
                     }
                 }
                 break;
@@ -318,8 +331,8 @@ class Camera1 extends CameraImpl {
 
     @Nullable
     @Override
-    CameraProperties getCameraProperties() {
-        return mCameraProperties;
+    ExtraProperties getExtraProperties() {
+        return mExtraProperties;
     }
 
     // Internal:
@@ -424,7 +437,7 @@ class Camera1 extends CameraImpl {
     }
 
     private void collectCameraProperties() {
-        mCameraProperties = new CameraProperties(mCameraParameters.getVerticalViewAngle(),
+        mExtraProperties = new ExtraProperties(mCameraParameters.getVerticalViewAngle(),
                 mCameraParameters.getHorizontalViewAngle());
     }
 

camerakit/src/main/api16/com/flurgle/camerakit/ConstantMapper.java

@@ -6,96 +6,70 @@ import android.hardware.camera2.CameraCharacteristics;
 import android.support.v4.util.SparseArrayCompat;
 import android.util.SparseIntArray;
 
-public class ConstantMapper {
-
-    private abstract static class BaseMapper<T> {
+import java.util.Map;
 
-        protected int mCameraKitConstant;
+public class ConstantMapper {
 
-        protected BaseMapper(int cameraKitConstant) {
-            this.mCameraKitConstant = cameraKitConstant;
-        }
+    static abstract class MapperImpl {
 
-        abstract T map();
+        MapperImpl() {}
 
+        abstract <T> T mapFlash(@Flash int internalConstant);
+        abstract <T> T mapFacing(@Facing int internalConstant);
+        abstract <T> T mapWhiteBalance(@WhiteBalance int internalConstant);
     }
 
-    static class Flash extends BaseMapper<String> {
-
-        private static final SparseArrayCompat<String> FLASH_MODES = new SparseArrayCompat<>();
+    static class Mapper1 extends MapperImpl {
+        private static final SparseArrayCompat<String> FLASH = new SparseArrayCompat<>();
+        private static final SparseArrayCompat<String> WB = new SparseArrayCompat<>();
+        private static final SparseArrayCompat<Integer> FACING = new SparseArrayCompat<>();
 
         static {
-            FLASH_MODES.put(CameraKit.Constants.FLASH_OFF, Camera.Parameters.FLASH_MODE_OFF);
-            FLASH_MODES.put(CameraKit.Constants.FLASH_ON, Camera.Parameters.FLASH_MODE_ON);
-            FLASH_MODES.put(CameraKit.Constants.FLASH_AUTO, Camera.Parameters.FLASH_MODE_AUTO);
-            FLASH_MODES.put(CameraKit.Constants.FLASH_TORCH, Camera.Parameters.FLASH_MODE_TORCH);
-        }
-
-        protected Flash(int cameraKitConstant) {
-            super(cameraKitConstant);
+            FLASH.put(CameraKit.Constants.FLASH_OFF, Camera.Parameters.FLASH_MODE_OFF);
+            FLASH.put(CameraKit.Constants.FLASH_ON, Camera.Parameters.FLASH_MODE_ON);
+            FLASH.put(CameraKit.Constants.FLASH_AUTO, Camera.Parameters.FLASH_MODE_AUTO);
+            FLASH.put(CameraKit.Constants.FLASH_TORCH, Camera.Parameters.FLASH_MODE_TORCH);
+            FACING.put(CameraKit.Constants.FACING_BACK, Camera.CameraInfo.CAMERA_FACING_BACK);
+            FACING.put(CameraKit.Constants.FACING_FRONT, Camera.CameraInfo.CAMERA_FACING_FRONT);
+            WB.put(CameraKit.Constants.WHITE_BALANCE_AUTO, Camera.Parameters.WHITE_BALANCE_AUTO);
+            WB.put(CameraKit.Constants.WHITE_BALANCE_INCANDESCENT, Camera.Parameters.WHITE_BALANCE_INCANDESCENT);
+            WB.put(CameraKit.Constants.WHITE_BALANCE_FLUORESCENT, Camera.Parameters.WHITE_BALANCE_FLUORESCENT);
+            WB.put(CameraKit.Constants.WHITE_BALANCE_DAYLIGHT, Camera.Parameters.WHITE_BALANCE_DAYLIGHT);
+            WB.put(CameraKit.Constants.WHITE_BALANCE_CLOUDY, Camera.Parameters.WHITE_BALANCE_CLOUDY_DAYLIGHT);
         }
 
         @Override
-        String map() {
-            return FLASH_MODES.get(mCameraKitConstant, FLASH_MODES.get(CameraKit.Constants.FLASH_OFF));
-        }
-
-    }
-
-    @TargetApi(21)
-    static class Flash2 extends BaseMapper<String> {
-
-        protected Flash2(int cameraKitConstant) {
-            super(cameraKitConstant);
+        <T> T mapFlash(int internalConstant) {
+            return (T) FLASH.get(internalConstant, null);
         }
 
         @Override
-        String map() {
-            return null;
-        }
-
-    }
-
-    static class Facing extends BaseMapper<Integer> {
-
-        private static final SparseArrayCompat<Integer> FACING_MODES = new SparseArrayCompat<>();
-
-        static {
-            FACING_MODES.put(CameraKit.Constants.FACING_BACK, Camera.CameraInfo.CAMERA_FACING_BACK);
-            FACING_MODES.put(CameraKit.Constants.FACING_FRONT, Camera.CameraInfo.CAMERA_FACING_FRONT);
-        }
-
-        protected Facing(int cameraKitConstant) {
-            super(cameraKitConstant);
+        <T> T mapFacing(int internalConstant) {
+            return (T) FACING.get(internalConstant, null);
         }
 
         @Override
-        Integer map() {
-            return FACING_MODES.get(mCameraKitConstant, FACING_MODES.get(CameraKit.Constants.FACING_BACK));
+        <T> T mapWhiteBalance(int internalConstant) {
+            return (T) WB.get(internalConstant, null);
         }
-
     }
 
-    @TargetApi(21)
-    static class Facing2 extends BaseMapper<Integer> {
-
-        private static final SparseIntArray FACING_MODES = new SparseIntArray();
+    static class Mapper2 extends MapperImpl {
 
-        static {
-            FACING_MODES.put(CameraKit.Constants.FACING_BACK, CameraCharacteristics.LENS_FACING_BACK);
-            FACING_MODES.put(CameraKit.Constants.FACING_FRONT, CameraCharacteristics.LENS_FACING_FRONT);
+        @Override
+        <T> T mapWhiteBalance(@WhiteBalance int internalConstant) {
+            return null;
         }
 
-        protected Facing2(int cameraKitConstant) {
-            super(cameraKitConstant);
+        @Override
+        <T> T mapFacing(@Facing int internalConstant) {
+            return null;
         }
 
         @Override
-        Integer map() {
-            return FACING_MODES.get(mCameraKitConstant, FACING_MODES.get(CameraKit.Constants.FACING_BACK));
+        <T> T mapFlash(@Flash int internalConstant) {
+            return null;
         }
-
     }
 
-
 }

camerakit/src/main/api21/com/flurgle/camerakit/Camera2.java

@@ -31,7 +31,8 @@ class Camera2 extends CameraImpl {
     private Size mCaptureSize;
     private Size mPreviewSize;
 
-    private final HashMap<String, CameraProperties> mCameraPropertyMap = new HashMap<>();
+    private ConstantMapper.MapperImpl mMapper = new ConstantMapper.Mapper2();
+    private final HashMap<String, ExtraProperties> mExtraPropertiesMap = new HashMap<>();
 
     Camera2(CameraListener callback, PreviewImpl preview, Context context) {
         super(callback, preview);
@@ -64,7 +65,7 @@ class Camera2 extends CameraImpl {
                     }
                     float w = size.getWidth();
                     float h = size.getHeight();
-                    mCameraPropertyMap.put(cameraId, new CameraProperties(
+                    mExtraPropertiesMap.put(cameraId, new ExtraProperties(
                             (float) Math.toDegrees(2*Math.atan(w/(maxFocus[0]*2))),
                             (float) Math.toDegrees(2*Math.atan(h/(maxFocus[0]*2)))
                     ));
@@ -99,11 +100,7 @@ class Camera2 extends CameraImpl {
 
     @Override
     void setFacing(@Facing int facing) {
-        int internalFacing = new ConstantMapper.Facing(facing).map();
-        if (internalFacing == -1) {
-            return;
-        }
-
+        int internalFacing = mMapper.mapFacing(facing);
         final String[] ids;
         try {
             ids = mCameraManager.getCameraIdList();
@@ -164,6 +161,11 @@ class Camera2 extends CameraImpl {
 
     }
 
+    @Override
+    void setWhiteBalance(@WhiteBalance int whiteBalance) {
+
+    }
+
     @Override
     void setVideoQuality(int videoQuality) {
 
@@ -248,11 +250,11 @@ class Camera2 extends CameraImpl {
 
     @Nullable
     @Override
-    CameraProperties getCameraProperties() {
+    ExtraProperties getExtraProperties() {
         if (mCamera == null) {
             return null;
         }
-        return mCameraPropertyMap.get(mCamera.getId());
+        return mExtraPropertiesMap.get(mCamera.getId());
     }
     // Internal
 

camerakit/src/main/base/com/flurgle/camerakit/CameraImpl.java

@@ -24,6 +24,7 @@ abstract class CameraImpl {
     abstract void setMethod(@Method int method);
     abstract void setZoom(@ZoomMode int zoom);
     abstract void setVideoQuality(@VideoQuality int videoQuality);
+    abstract void setWhiteBalance(@WhiteBalance int whiteBalance);
     abstract void setLocation(double latitude, double longitude);
 
     abstract void captureImage();
@@ -36,6 +37,6 @@ abstract class CameraImpl {
     abstract boolean isCameraOpened();
 
     @Nullable
-    abstract CameraProperties getCameraProperties();
+    abstract ExtraProperties getExtraProperties();
 
 }

camerakit/src/main/base/com/flurgle/camerakit/CameraProperties.java

@@ -1,14 +0,0 @@
-package com.flurgle.camerakit;
-
-/**
- * Simple pojo containing various camera properties.
- */
-public class CameraProperties {
-    public final float verticalViewingAngle;
-    public final float horizontalViewingAngle;
-
-    public CameraProperties(float verticalViewingAngle, float horizontalViewingAngle) {
-        this.verticalViewingAngle = verticalViewingAngle;
-        this.horizontalViewingAngle = horizontalViewingAngle;
-    }
-}

camerakit/src/main/java/com/flurgle/camerakit/CameraKit.java

@@ -59,6 +59,11 @@ public class CameraKit {
         public static final int VIDEO_QUALITY_LOWEST = 5;
         public static final int VIDEO_QUALITY_QVGA = 6;
 
+        public static final int WHITE_BALANCE_AUTO = 0;
+        public static final int WHITE_BALANCE_INCANDESCENT = 1;
+        public static final int WHITE_BALANCE_FLUORESCENT = 2;
+        public static final int WHITE_BALANCE_DAYLIGHT = 3;
+        public static final int WHITE_BALANCE_CLOUDY = 4;
     }
 
     static class Defaults {
@@ -70,7 +75,7 @@ public class CameraKit {
         static final int DEFAULT_METHOD = Constants.CAPTURE_METHOD_STANDARD;
         static final int DEFAULT_PERMISSIONS = Constants.PERMISSIONS_PICTURE;
         static final int DEFAULT_VIDEO_QUALITY = Constants.VIDEO_QUALITY_480P;
-
+        static final int DEFAULT_WHITE_BALANCE = Constants.WHITE_BALANCE_AUTO;
         static final int DEFAULT_JPEG_QUALITY = 100;
         static final boolean DEFAULT_CROP_OUTPUT = false;
         static final boolean DEFAULT_ADJUST_VIEW_BOUNDS = false;

camerakit/src/main/java/com/flurgle/camerakit/CameraView.java

@@ -80,10 +80,10 @@ public class CameraView extends FrameLayout implements LifecycleObserver {
     @Flash private int mFlash;
     @Focus private int mFocus;
     @Method private int mMethod;
-    @ZoomMode
-    private int mZoom;
+    @ZoomMode private int mZoom;
     @Permissions private int mPermissions;
     @VideoQuality private int mVideoQuality;
+    @WhiteBalance private int mWhiteBalance;
     private int mJpegQuality;
     private boolean mCropOutput;
     private boolean mAdjustViewBounds;
@@ -116,6 +116,7 @@ public class CameraView extends FrameLayout implements LifecycleObserver {
                 mMethod = a.getInteger(R.styleable.CameraView_cameraCaptureMethod, CameraKit.Defaults.DEFAULT_METHOD);
                 mZoom = a.getInteger(R.styleable.CameraView_cameraZoomMode, CameraKit.Defaults.DEFAULT_ZOOM);
                 mPermissions = a.getInteger(R.styleable.CameraView_cameraPermissionPolicy, CameraKit.Defaults.DEFAULT_PERMISSIONS);
+                mWhiteBalance = a.getInteger(R.styleable.CameraView_cameraWhiteBalance, CameraKit.Defaults.DEFAULT_WHITE_BALANCE);
                 mVideoQuality = a.getInteger(R.styleable.CameraView_cameraVideoQuality, CameraKit.Defaults.DEFAULT_VIDEO_QUALITY);
                 mJpegQuality = a.getInteger(R.styleable.CameraView_cameraJpegQuality, CameraKit.Defaults.DEFAULT_JPEG_QUALITY);
                 mCropOutput = a.getBoolean(R.styleable.CameraView_cameraCropOutput, CameraKit.Defaults.DEFAULT_CROP_OUTPUT);
@@ -138,6 +139,7 @@ public class CameraView extends FrameLayout implements LifecycleObserver {
         setZoom(mZoom);
         setPermissionPolicy(mPermissions);
         setVideoQuality(mVideoQuality);
+        setWhiteBalance(mWhiteBalance);
 
         if (!isInEditMode()) {
             mOrientationHelper = new OrientationHelper(context) {
@@ -352,8 +354,8 @@ public class CameraView extends FrameLayout implements LifecycleObserver {
     }
 
     @Nullable
-    public CameraProperties getCameraProperties() {
-        return mCameraImpl.getCameraProperties();
+    public ExtraProperties getExtraProperties() {
+        return mCameraImpl.getExtraProperties();
     }
 
 
@@ -366,6 +368,24 @@ public class CameraView extends FrameLayout implements LifecycleObserver {
         mCameraImpl.setLocation(latitude, longitude);
     }
 
+    /**
+     * Sets desired white balance to current camera session.
+     * @param whiteBalance desired white balance behavior.
+     */
+    public void setWhiteBalance(@WhiteBalance int whiteBalance) {
+        mWhiteBalance = whiteBalance;
+        mCameraImpl.setWhiteBalance(whiteBalance);
+    }
+
+    /**
+     * Returns the current white balance behavior.
+     * @return white balance value.
+     */
+    @WhiteBalance
+    public int getWhiteBalance() {
+        return mWhiteBalance;
+    }
+
     @Facing
     public int getFacing() {
         return mFacing;
@@ -373,7 +393,6 @@ public class CameraView extends FrameLayout implements LifecycleObserver {
 
     public void setFacing(@Facing final int facing) {
         this.mFacing = facing;
-
         run(new Runnable() {
             @Override
             public void run() {

camerakit/src/main/res/values/attrs.xml

@@ -22,6 +22,14 @@
             <enum name="tapWithMarker" value="3" />
         </attr>
 
+        <attr name="cameraWhiteBalance" format="enum">
+            <enum name="auto" value="0" />
+            <enum name="incandescent" value="1" />
+            <enum name="fluorescent" value="2" />
+            <enum name="daylight" value="3" />
+            <enum name="cloudy" value="4" />
+        </attr>
+
         <attr name="cameraZoomMode" format="enum">
             <enum name="off" value="0" />