Gallery2: Check privative effects

Gallery2 has 2 effects (FaceTan and Facelift) from the privative gapps.
If gapps is not present, Gallery2 gets into a FC when click on this effects.
This patch checks if the permission "com.google.android.media.effects" exists
and hide this 2 effects if permission not exists

Patch 2: Use EffectFactory.isEffectSupported to detect if filters exists
Patch 3: Make isPresent method from effect classes a static method
Patch 4: Change actions classes for static calling to effects classes

Change-Id: I8f6b59e57e504114835ab3283f65a72b4f6774a8

2 files changed, 27 insertions, 2 deletions

diff --git a/src/com/android/gallery3d/photoeditor/filters/FaceTanFilter.java b/src/com/android/gallery3d/photoeditor/filters/FaceTanFilter.java
index c52bb8848..b7a1cf1c7 100644
--- a/src/com/android/gallery3d/photoeditor/filters/FaceTanFilter.java
+++ b/src/com/android/gallery3d/photoeditor/filters/FaceTanFilter.java
@@ -17,6 +17,7 @@
 package com.android.gallery3d.photoeditor.filters;
 
 import android.media.effect.Effect;
+import android.media.effect.EffectFactory;
 
 import com.android.gallery3d.photoeditor.Photo;
 
@@ -27,10 +28,22 @@ public class FaceTanFilter extends AbstractScaleFilter {
 
     public static final Creator<FaceTanFilter> CREATOR = creatorOf(FaceTanFilter.class);
 
+    private static final String EFFECT_FACE_TANNING = "com.google.android.media.effect.effects.FaceTanningEffect";
+
     @Override
     public void process(Photo src, Photo dst) {
-        Effect effect = getEffect("com.google.android.media.effect.effects.FaceTanningEffect");
+        Effect effect = getEffect(EFFECT_FACE_TANNING);
         effect.setParameter("blend", scale);
         effect.apply(src.texture(), src.width(), src.height(), dst.texture());
     }
+
+    /**
+     * Checks if the effect is present in the system.
+     *
+     * @return boolean true if an effect is present in the system and can be loaded
+     */
+    public static boolean isPresent() {
+        return EffectFactory.isEffectSupported(EFFECT_FACE_TANNING);
+    }
+
 }
diff --git a/src/com/android/gallery3d/photoeditor/filters/FaceliftFilter.java b/src/com/android/gallery3d/photoeditor/filters/FaceliftFilter.java
index c6ad84b80..3e4fad206 100644
--- a/src/com/android/gallery3d/photoeditor/filters/FaceliftFilter.java
+++ b/src/com/android/gallery3d/photoeditor/filters/FaceliftFilter.java
@@ -17,6 +17,7 @@
 package com.android.gallery3d.photoeditor.filters;
 
 import android.media.effect.Effect;
+import android.media.effect.EffectFactory;
 
 import com.android.gallery3d.photoeditor.Photo;
 
@@ -27,10 +28,21 @@ public class FaceliftFilter extends AbstractScaleFilter {
 
     public static final Creator<FaceliftFilter> CREATOR = creatorOf(FaceliftFilter.class);
 
+    private static final String EFFECT_FACELIFT = "com.google.android.media.effect.effects.FaceliftEffect";
+
     @Override
     public void process(Photo src, Photo dst) {
-        Effect effect = getEffect("com.google.android.media.effect.effects.FaceliftEffect");
+        Effect effect = getEffect(EFFECT_FACELIFT);
         effect.setParameter("blend", scale);
         effect.apply(src.texture(), src.width(), src.height(), dst.texture());
     }
+
+    /**
+     * Checks if the effect is present in the system.
+     *
+     * @return boolean true if an effect is present in the system and can be loaded
+     */
+    public static boolean isPresent() {
+        return EffectFactory.isEffectSupported(EFFECT_FACELIFT);
+    }
 }