SnapdragonCamera: Handle startPreview exception in camera.

If any exception occurs in start preview then camera app
should handle this exception and should display error pop-up
and exit gracefully.

CRs-Fixed: 919778

Change-Id: I80b60224d5d47a96dad78c40f8a23e3e9be45e65

4 files changed, 43 insertions, 4 deletions

diff --git a/src/com/android/camera/AndroidCameraManagerImpl.java b/src/com/android/camera/AndroidCameraManagerImpl.java
index 97ec6af18..e67c7b463 100644
--- a/src/com/android/camera/AndroidCameraManagerImpl.java
+++ b/src/com/android/camera/AndroidCameraManagerImpl.java
@@ -118,6 +118,8 @@ class AndroidCameraManagerImpl implements CameraManager {
     }
 
     private class CameraHandler extends Handler {
+        CameraOpenErrorCallbackForward errorCbInstance;
+
         CameraHandler(Looper looper) {
             super(looper);
         }
@@ -251,6 +253,7 @@ class AndroidCameraManagerImpl implements CameraManager {
                             return;
                         }
                         mCamera.release();
+                        errorCbInstance = null;
                         mCamera = null;
                         return;
 
@@ -284,7 +287,13 @@ class AndroidCameraManagerImpl implements CameraManager {
                         return;
 
                     case START_PREVIEW_ASYNC:
-                        mCamera.startPreview();
+                        try {
+                            mCamera.startPreview();
+                        } catch (Exception e) {
+                            e.printStackTrace();
+                            if (errorCbInstance != null)
+                                errorCbInstance.onStartPreviewFailure(msg.arg1);
+                        }
                         return;
 
                     case STOP_PREVIEW:
@@ -415,9 +424,10 @@ class AndroidCameraManagerImpl implements CameraManager {
     @Override
     public CameraManager.CameraProxy cameraOpen(
         Handler handler, int cameraId, CameraOpenErrorCallback callback) {
-        mCameraHandler.obtainMessage(OPEN_CAMERA, cameraId, 0,
-                CameraOpenErrorCallbackForward.getNewInstance(
-                        handler, callback)).sendToTarget();
+        mCameraHandler.errorCbInstance = CameraOpenErrorCallbackForward
+                .getNewInstance(handler, callback);
+        mCameraHandler.obtainMessage(OPEN_CAMERA, cameraId, 0, mCameraHandler.errorCbInstance)
+                .sendToTarget();
         mCameraHandler.waitDone();
         if (mCamera != null) {
             return new AndroidCameraProxyImpl();
@@ -990,5 +1000,15 @@ class AndroidCameraManagerImpl implements CameraManager {
                 }
             });
         }
+
+        @Override
+        public void onStartPreviewFailure(final int cameraId) {
+            mHandler.post(new Runnable() {
+                @Override
+                public void run() {
+                    mCallback.onStartPreviewFailure(cameraId);
+                }
+            });
+        }
     }
 }
diff --git a/src/com/android/camera/CameraActivity.java b/src/com/android/camera/CameraActivity.java
index b2705e2b2..186fa514a 100644
--- a/src/com/android/camera/CameraActivity.java
+++ b/src/com/android/camera/CameraActivity.java
@@ -320,6 +320,15 @@ public class CameraActivity extends Activity
                     CameraUtil.showErrorAndFinish(CameraActivity.this,
                             R.string.cannot_connect_camera);
                 }
+
+                @Override
+                public void onStartPreviewFailure(int cameraId) {
+                    UsageStatistics.onEvent(UsageStatistics.COMPONENT_CAMERA,
+                            UsageStatistics.ACTION_START_PREVIEW_FAIL, "startpreview");
+
+                    CameraUtil.showErrorAndFinish(CameraActivity.this,
+                            R.string.cannot_connect_camera);
+                }
             };
 
     // update the status of storage space when SD card status changed.
diff --git a/src/com/android/camera/CameraManager.java b/src/com/android/camera/CameraManager.java
index f6afce854..d379a2fe0 100644
--- a/src/com/android/camera/CameraManager.java
+++ b/src/com/android/camera/CameraManager.java
@@ -130,6 +130,15 @@ public interface CameraManager {
          *            with the reconnect failure.
          */
         public void onReconnectionFailure(CameraManager mgr);
+
+        /**
+         * Callback when startPreview failure runtime exception is
+         * caught.
+         *
+         * @param cameraId The camera with the hardware failure.
+         */
+        public void onStartPreviewFailure(int cameraId);
+
     }
 
     /**
diff --git a/src_pd/com/android/camera/util/UsageStatistics.java b/src_pd/com/android/camera/util/UsageStatistics.java
index 98dc89c9f..b39dcf137 100644
--- a/src_pd/com/android/camera/util/UsageStatistics.java
+++ b/src_pd/com/android/camera/util/UsageStatistics.java
@@ -31,6 +31,7 @@ public class UsageStatistics {
 
     public static final String ACTION_FOREGROUNDED = "Foregrounded";
     public static final String ACTION_OPEN_FAIL = "OpenFailure";
+    public static final String ACTION_START_PREVIEW_FAIL = "StartPreviewFailure";
     public static final String ACTION_SCREEN_CHANGED = "ScreenChanged";
     public static final String ACTION_FILMSTRIP = "Filmstrip";
     public static final String ACTION_TOUCH_FOCUS= "TouchFocus";