snap: Add constrained longshot mode

 * On the OP3, we can only use Longshot in a single scene mode without
   conflicting with other built-in postprocessing features which cannot
   be disabled. Add support for this. When a scene specified in the
   longshot-scenemodes list is active, continuous shot will be enabled.

Change-Id: I79878e5ac918e907ddc5b3ca168e49f4e06656c3

2 files changed, 26 insertions, 1 deletions

diff --git a/res/values/config.xml b/res/values/config.xml
index 268475a2e..d4344fbdd 100644
--- a/res/values/config.xml
+++ b/res/values/config.xml
@@ -64,4 +64,10 @@
 
     <!-- Set this to true to use device manufacturer and model for exif -->
     <bool name="override_maker_and_model_tag">false</bool>
+
+    <!-- A list of scenemodes where Longshot should be enabled.
+         An empty list will use the default restrictions. If defined, longshot
+         will be enabled ONLY for these scenemodes and disabled for others. -->
+    <string-array name="longshot_scenemodes"></string-array>
+
 </resources>
diff --git a/src/com/android/camera/PhotoModule.java b/src/com/android/camera/PhotoModule.java
index 8db4d2e5c..081eb7b9e 100644
--- a/src/com/android/camera/PhotoModule.java
+++ b/src/com/android/camera/PhotoModule.java
@@ -1754,6 +1754,25 @@ public class PhotoModule
         }
     }
 
+    private void updateLongshotScene() {
+        String[] longshotScenes = mActivity.getResources().getStringArray(
+                R.array.longshot_scenemodes);
+        if (longshotScenes.length == 0) {
+            mUI.overrideSettings(CameraSettings.KEY_LONGSHOT, null);
+            return;
+        }
+        boolean useLongshot = false;
+        for (String scene : longshotScenes) {
+            if (scene.equals(mSceneMode)) {
+                useLongshot = true;
+                break;
+            }
+        }
+        mUI.overrideSettings(CameraSettings.KEY_LONGSHOT,
+                useLongshot ? mActivity.getString(R.string.setting_on_value) :
+                              mActivity.getString(R.string.setting_off_value));
+    }
+
     private void updateCommonManual3ASettings() {
         mSceneMode = Parameters.SCENE_MODE_AUTO;
         String flashMode = Parameters.FLASH_MODE_OFF;
@@ -1961,7 +1980,7 @@ public class PhotoModule
             mUI.overrideSettings(CameraSettings.KEY_LONGSHOT,
                     mActivity.getString(R.string.setting_off_value));
         } else {
-            mUI.overrideSettings(CameraSettings.KEY_LONGSHOT, null);
+            updateLongshotScene();
         }
 
         if (flashMode == null) {