1 files changed, 111 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/filtershow/filters/ImageFilterFx.java b/src/com/android/gallery3d/filtershow/filters/ImageFilterFx.java
new file mode 100644
index 000000000..19bea593b
--- /dev/null
+++ b/src/com/android/gallery3d/filtershow/filters/ImageFilterFx.java
@@ -0,0 +1,111 @@
+/*
+ * 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.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import com.android.gallery3d.app.Log;
+
+public class ImageFilterFx extends ImageFilter {
+    private static final String LOGTAG = "ImageFilterFx";
+    private FilterFxRepresentation mParameters = null;
+    private Bitmap mFxBitmap = null;
+    private Resources mResources = null;
+    private int mFxBitmapId = 0;
+
+    public ImageFilterFx() {
+    }
+
+    @Override
+    public void freeResources() {
+        if (mFxBitmap != null) mFxBitmap.recycle();
+        mFxBitmap = null;
+    }
+
+    @Override
+    public FilterRepresentation getDefaultRepresentation() {
+        return null;
+    }
+
+    public void useRepresentation(FilterRepresentation representation) {
+        FilterFxRepresentation parameters = (FilterFxRepresentation) representation;
+        mParameters = parameters;
+    }
+
+    public FilterFxRepresentation getParameters() {
+        return mParameters;
+    }
+
+    native protected void nativeApplyFilter(Bitmap bitmap, int w, int h,
+                                            Bitmap fxBitmap, int fxw, int fxh,
+                                            int start, int end);
+
+    @Override
+    public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) {
+        if (getParameters() == null || mResources == null) {
+            return bitmap;
+        }
+
+        int w = bitmap.getWidth();
+        int h = bitmap.getHeight();
+
+        int bitmapResourceId = getParameters().getBitmapResource();
+        if (bitmapResourceId == 0) { // null filter fx
+            return bitmap;
+        }
+
+        if (mFxBitmap == null || mFxBitmapId != bitmapResourceId) {
+            BitmapFactory.Options o = new BitmapFactory.Options();
+            o.inScaled = false;
+            mFxBitmapId = bitmapResourceId;
+            if (mFxBitmapId != 0) {
+                mFxBitmap = BitmapFactory.decodeResource(mResources, mFxBitmapId, o);
+            } else {
+                Log.w(LOGTAG, "bad resource for filter: " + mName);
+            }
+        }
+
+        if (mFxBitmap == null) {
+            return bitmap;
+        }
+
+        int fxw = mFxBitmap.getWidth();
+        int fxh = mFxBitmap.getHeight();
+
+        int stride = w * 4;
+        int max = stride * h;
+        int increment = stride * 256; // 256 lines
+        for (int i = 0; i < max; i += increment) {
+            int start = i;
+            int end = i + increment;
+            if (end > max) {
+                end = max;
+            }
+            if (!getEnvironment().needsStop()) {
+                nativeApplyFilter(bitmap, w, h, mFxBitmap, fxw, fxh, start, end);
+            }
+        }
+
+        return bitmap;
+    }
+
+    public void setResources(Resources resources) {
+        mResources = resources;
+    }
+
+}