Make Panorama work in portrait layout.

Add the support of both portrait and landscape layout to the panorama library.
Add a step into the preview renderer that rotates the content in the
offscreen buffer by 90 degrees in the case of a portrait layout.

Change-Id: I879e3476daac522b0c8b27fe3ef5b17ebf0797e3

4 files changed, 31 insertions, 11 deletions

diff --git a/src/com/android/camera/panorama/MosaicRenderer.java b/src/com/android/camera/panorama/MosaicRenderer.java
index 1ff307d..f055c0e 100644
--- a/src/com/android/camera/panorama/MosaicRenderer.java
+++ b/src/com/android/camera/panorama/MosaicRenderer.java
@@ -43,8 +43,9 @@ public class MosaicRenderer
       *
       * @param width width of the drawing surface in pixels.
       * @param height height of the drawing surface in pixels.
+      * @param isLandscapeOrientation is the orientation of the activity layout in landscape.
       */
-     public static native void reset(int width, int height);
+     public static native void reset(int width, int height, boolean isLandscapeOrientation);
 
      /**
       * Calling this function will render the SurfaceTexture to a new 2D texture
diff --git a/src/com/android/camera/panorama/MosaicRendererSurfaceView.java b/src/com/android/camera/panorama/MosaicRendererSurfaceView.java
index 08d4eff..b2acfde 100644
--- a/src/com/android/camera/panorama/MosaicRendererSurfaceView.java
+++ b/src/com/android/camera/panorama/MosaicRendererSurfaceView.java
@@ -16,7 +16,9 @@
 
 package com.android.camera.panorama;
 
+import android.app.Activity;
 import android.content.Context;
+import android.content.pm.ActivityInfo;
 import android.graphics.PixelFormat;
 import android.opengl.GLSurfaceView;
 import android.os.ConditionVariable;
@@ -33,25 +35,36 @@ public class MosaicRendererSurfaceView extends GLSurfaceView {
     private static final boolean DEBUG = false;
     private MosaicRendererSurfaceViewRenderer mRenderer;
     private ConditionVariable mPreviewFrameReadyForProcessing;
+    private boolean mIsLandscapeOrientation = true;
 
     public MosaicRendererSurfaceView(Context context) {
         super(context);
-        init(false, 0, 0);
-        setZOrderMediaOverlay(true);
+        initialize(context, false, 0, 0);
     }
 
     public MosaicRendererSurfaceView(Context context, AttributeSet attrs) {
         super(context, attrs);
-        init(false, 0, 0);
-        setZOrderMediaOverlay(true);
+        initialize(context, false, 0, 0);
     }
 
-    public MosaicRendererSurfaceView(Context context, boolean translucent, int depth, int stencil) {
+    public MosaicRendererSurfaceView(Context context, boolean translucent,
+            int depth, int stencil) {
         super(context);
+        initialize(context, translucent, depth, stencil);
+    }
+
+    private void initialize(Context context, boolean translucent, int depth, int stencil) {
+        getDisplayOrientation(context);
         init(translucent, depth, stencil);
         setZOrderMediaOverlay(true);
     }
 
+    private void getDisplayOrientation(Context context) {
+        Activity activity = (PanoramaActivity) context;
+        mIsLandscapeOrientation = (activity.getRequestedOrientation()
+                == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE );
+    }
+
     private void init(boolean translucent, int depth, int stencil) {
 
         /* By default, GLSurfaceView() creates a RGB_565 opaque surface.
@@ -78,7 +91,7 @@ public class MosaicRendererSurfaceView extends GLSurfaceView {
             new ConfigChooser(5, 6, 5, 0, depth, stencil));
 
         /* Set the renderer responsible for frame rendering */
-        mRenderer = new MosaicRendererSurfaceViewRenderer();
+        mRenderer = new MosaicRendererSurfaceViewRenderer(mIsLandscapeOrientation);
         setRenderer(mRenderer);
         setRenderMode(RENDERMODE_WHEN_DIRTY);
         mPreviewFrameReadyForProcessing = new ConditionVariable();
diff --git a/src/com/android/camera/panorama/MosaicRendererSurfaceViewRenderer.java b/src/com/android/camera/panorama/MosaicRendererSurfaceViewRenderer.java
index b2b2f56..3089972 100755
--- a/src/com/android/camera/panorama/MosaicRendererSurfaceViewRenderer.java
+++ b/src/com/android/camera/panorama/MosaicRendererSurfaceViewRenderer.java
@@ -25,9 +25,14 @@ import javax.microedition.khronos.opengles.GL10;
 public class MosaicRendererSurfaceViewRenderer implements GLSurfaceView.Renderer
 {
     private static final String TAG = "MosaicRendererSurfaceViewRenderer";
+    private boolean mIsLandscapeOrientation;
 
     private MosaicSurfaceCreateListener mSurfaceCreateListener;
 
+    public MosaicRendererSurfaceViewRenderer(boolean isLandscapeOrientation) {
+        mIsLandscapeOrientation = isLandscapeOrientation;
+    }
+
     /** A callback to be called when the surface is created */
     public interface MosaicSurfaceCreateListener {
         public void onMosaicSurfaceCreated(final int surface);
@@ -41,7 +46,7 @@ public class MosaicRendererSurfaceViewRenderer implements GLSurfaceView.Renderer
 
     @Override
     public void onSurfaceChanged(GL10 gl, int width, int height) {
-        MosaicRenderer.reset(width, height);
+        MosaicRenderer.reset(width, height, mIsLandscapeOrientation);
         Log.i(TAG, "Renderer: onSurfaceChanged");
         if (mSurfaceCreateListener != null) {
             mSurfaceCreateListener.onMosaicSurfaceChanged();
diff --git a/src/com/android/camera/panorama/PanoramaActivity.java b/src/com/android/camera/panorama/PanoramaActivity.java
index 6fd9b1a..e63ef71 100755
--- a/src/com/android/camera/panorama/PanoramaActivity.java
+++ b/src/com/android/camera/panorama/PanoramaActivity.java
@@ -983,9 +983,10 @@ public class PanoramaActivity extends ActivityBase implements
         // the screen).
         if (mCameraState != PREVIEW_STOPPED) stopCameraPreview();
 
-        int orientation = Util.getDisplayOrientation(Util.getDisplayRotation(this),
-                CameraHolder.instance().getBackCameraId());
-        mCameraDevice.setDisplayOrientation(orientation);
+        // Set the display orientation to 0, so that the underlying mosaic library
+        // can always get undistorted mPreviewWidth x mPreviewHeight image data
+        // from SurfaceTexture.
+        mCameraDevice.setDisplayOrientation(0);
 
         setPreviewTexture(mSurfaceTexture);