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/*
* 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.GeometryMetadata;
import com.android.gallery3d.filtershow.imageshow.MasterImage;
import com.android.gallery3d.filtershow.pipeline.FilterEnvironment;
import com.android.gallery3d.filtershow.pipeline.ImagePreset;
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) {
ImagePreset preset = getEnvironment().getImagePreset();
GeometryMetadata geo = getEnvironment().getImagePreset().getGeometry();
Matrix originalToScreen = geo.getOriginalToScreen(true,
MasterImage.getImage().getOriginalBounds().width(),
MasterImage.getImage().getOriginalBounds().height(),
w, h);
return originalToScreen;
}
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();
}
}
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