1 files changed, 48 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/photoeditor/filters/GrainFilter.java b/src/com/android/gallery3d/photoeditor/filters/GrainFilter.java
new file mode 100644
index 000000000..1ee8a9c3f
--- /dev/null
+++ b/src/com/android/gallery3d/photoeditor/filters/GrainFilter.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.photoeditor.filters;
+
+import android.media.effect.Effect;
+import android.media.effect.EffectContext;
+import android.media.effect.EffectFactory;
+
+import com.android.gallery3d.photoeditor.Photo;
+
+/**
+ * Film grain filter applied to the image.
+ */
+public class GrainFilter extends Filter {
+
+    private float scale;
+
+    /**
+     * Set the grain noise level.
+     *
+     * @param scale ranges from 0 to 1.
+     */
+    public void setScale(float scale) {
+        this.scale = scale;
+        validate();
+    }
+
+    @Override
+    public void process(EffectContext context, Photo src, Photo dst) {
+        Effect effect = getEffect(context, EffectFactory.EFFECT_GRAIN);
+        effect.setParameter("scale", scale);
+        effect.apply(src.texture(), src.width(), src.height(), dst.texture());
+    }
+}