1 files changed, 109 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/filtershow/filters/ImageFilter.java b/src/com/android/gallery3d/filtershow/filters/ImageFilter.java
new file mode 100644
index 000000000..437137416
--- /dev/null
+++ b/src/com/android/gallery3d/filtershow/filters/ImageFilter.java
@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2012 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.filtershow.filters;
+
+import android.app.Activity;
+import android.graphics.Bitmap;
+import android.graphics.Matrix;
+import android.support.v8.renderscript.Allocation;
+import android.widget.Toast;
+
+import com.android.gallery3d.filtershow.imageshow.GeometryMathUtils;
+import com.android.gallery3d.filtershow.imageshow.MasterImage;
+import com.android.gallery3d.filtershow.pipeline.FilterEnvironment;
+
+public abstract class ImageFilter implements Cloneable {
+    private FilterEnvironment mEnvironment = null;
+
+    protected String mName = "Original";
+    private final String LOGTAG = "ImageFilter";
+    protected static final boolean SIMPLE_ICONS = true;
+    // TODO: Temporary, for dogfood note memory issues with toasts for better
+    // feedback. Remove this when filters actually work in low memory
+    // situations.
+    private static Activity sActivity = null;
+
+    public static void setActivityForMemoryToasts(Activity activity) {
+        sActivity = activity;
+    }
+
+    public static void resetStatics() {
+        sActivity = null;
+    }
+
+    public void freeResources() {}
+
+    public void displayLowMemoryToast() {
+        if (sActivity != null) {
+            sActivity.runOnUiThread(new Runnable() {
+                public void run() {
+                    Toast.makeText(sActivity, "Memory too low for filter " + getName() +
+                            ", please file a bug report", Toast.LENGTH_SHORT).show();
+                }
+            });
+        }
+    }
+
+    public void setName(String name) {
+        mName = name;
+    }
+
+    public String getName() {
+        return mName;
+    }
+
+    public boolean supportsAllocationInput() { return false; }
+
+    public void apply(Allocation in, Allocation out) {
+        setGeneralParameters();
+    }
+
+    public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) {
+        // do nothing here, subclasses will implement filtering here
+        setGeneralParameters();
+        return bitmap;
+    }
+
+    public abstract void useRepresentation(FilterRepresentation representation);
+
+    native protected void nativeApplyGradientFilter(Bitmap bitmap, int w, int h,
+            int[] redGradient, int[] greenGradient, int[] blueGradient);
+
+    public FilterRepresentation getDefaultRepresentation() {
+        return null;
+    }
+
+    protected Matrix getOriginalToScreenMatrix(int w, int h) {
+        return GeometryMathUtils.getImageToScreenMatrix(getEnvironment().getImagePreset()
+                .getGeometryFilters(), true, MasterImage.getImage().getOriginalBounds(), w, h);
+    }
+
+    public void setEnvironment(FilterEnvironment environment) {
+        mEnvironment = environment;
+    }
+
+    public FilterEnvironment getEnvironment() {
+        return mEnvironment;
+    }
+
+    public void setGeneralParameters() {
+        // should implement in subclass which like to transport
+        // some information to other filters. (like the style setting from RetroLux
+        // and Film to FixedFrame)
+        mEnvironment.clearGeneralParameters();
+    }
+}