Implement rotation compensation for landscape devices

Retrieve the system property ro.device.screenrotation (value in 0, 90, 180, 270)
and adjust the pictures/videos accordingly.

Example of use: HTC Chacha, device with always fixed open keyboard and landscape screen.
Without the use of that property (ro.device.screenrotation), all pictures and videos
taken are rotated 90 degrees. Setting ro.device.screenrotation=90 will correct the issue.

Change-Id: I8015318e676e12c6fbf2bce387ce5805186c514b

src/com/android/camera/Camera.java

@@ -49,6 +49,7 @@
 import android.os.Looper;
 import android.os.Message;
 import android.os.MessageQueue;
+import android.os.SystemProperties;
 import android.preference.CheckBoxPreference;
 import android.provider.MediaStore;
 import android.provider.Settings;
@@ -125,6 +126,11 @@ public class Camera extends BaseCamera implements View.OnClickListener,
     private static final int ZOOM_START = 1;
     private static final int ZOOM_STOPPING = 2;
 
+    // Property that indicates that the device screen is rotated by default
+    // Necesary to adjust the rotation of pictures/movies (0, 90, 180, 270)
+    private static final int mDeviceScreenRotation =
+       SystemProperties.getInt("ro.device.screenrotation", 0);
+
     private int mZoomState = ZOOM_STOPPED;
     private boolean mSmoothZoomSupported = false;
     private int mZoomValue;  // The current zoom value.
@@ -825,7 +831,7 @@ private void capture() {
                         info.orientation != 90) {
                     rotation = (info.orientation - mOrientation + 360) % 360;
                 } else {  // back-facing camera (or acting like it)
-                    rotation = (info.orientation + mOrientation) % 360;
+                    rotation = (info.orientation + mOrientation - mDeviceScreenRotation ) % 360;
                 }
             }
             mParameters.setRotation(rotation);

src/com/android/camera/VideoCamera.java

@@ -51,6 +51,7 @@
 import android.os.Message;
 import android.os.StatFs;
 import android.os.SystemClock;
+import android.os.SystemProperties;
 import android.provider.MediaStore;
 import android.provider.Settings;
 import android.provider.MediaStore.Video;
@@ -124,6 +125,11 @@ public class VideoCamera extends BaseCamera
     private GestureDetector mGestureDetector;
     private final ZoomListener mZoomListener = new ZoomListener();
 
+    // Property that indicates that the device screen is rotated by default
+    // Necesary to adjust the rotation of pictures/movies (0, 90, 180, 270)
+    private static final int mDeviceScreenRotation =
+       SystemProperties.getInt("ro.device.screenrotation", 0);
+
     /**
      * An unpublished intent flag requesting to start recording straight away
      * and return as soon as recording is stopped.
@@ -1119,7 +1125,7 @@ private void initializeRecorder() {
             if (info.facing == CameraInfo.CAMERA_FACING_FRONT) {
                 rotation = (info.orientation - mOrientation + 360) % 360;
             } else {  // back-facing camera
-                rotation = (info.orientation + mOrientation) % 360;
+                rotation = (info.orientation + mOrientation - mDeviceScreenRotation ) % 360;
             }
         }
         mMediaRecorder.setOrientationHint(rotation);