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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.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Rect;
import com.adobe.xmp.XMPException;
import com.adobe.xmp.XMPMeta;
import com.android.gallery3d.filtershow.presets.ImagePreset;
/**
* An image filter which creates a tiny planet projection.
*/
public class ImageFilterTinyPlanet extends ImageFilter {
private static final String TAG = ImageFilterTinyPlanet.class.getSimpleName();
public static final String GOOGLE_PANO_NAMESPACE = "http://ns.google.com/photos/1.0/panorama/";
public static final String CROPPED_AREA_IMAGE_WIDTH_PIXELS =
"CroppedAreaImageWidthPixels";
public static final String CROPPED_AREA_IMAGE_HEIGHT_PIXELS =
"CroppedAreaImageHeightPixels";
public static final String CROPPED_AREA_FULL_PANO_WIDTH_PIXELS =
"FullPanoWidthPixels";
public static final String CROPPED_AREA_FULL_PANO_HEIGHT_PIXELS =
"FullPanoHeightPixels";
public static final String CROPPED_AREA_LEFT =
"CroppedAreaLeftPixels";
public static final String CROPPED_AREA_TOP =
"CroppedAreaTopPixels";
public ImageFilterTinyPlanet() {
setFilterType(TYPE_TINYPLANET);
mName = "TinyPlanet";
mMinParameter = 10;
mMaxParameter = 60;
mDefaultParameter = 20;
mPreviewParameter = 20;
mParameter = 20;
}
native protected void nativeApplyFilter(
Bitmap bitmapIn, int width, int height, Bitmap bitmapOut, int outSize, float scale,
float angle);
@Override
public Bitmap apply(Bitmap bitmapIn, float scaleFactor, boolean highQuality) {
int w = bitmapIn.getWidth();
int h = bitmapIn.getHeight();
int outputSize = Math.min(w, h);
ImagePreset preset = getImagePreset();
if (preset != null && preset.isPanoramaSafe()) {
bitmapIn = applyXmp(bitmapIn, preset);
}
Bitmap mBitmapOut = Bitmap.createBitmap(
outputSize, outputSize, Bitmap.Config.ARGB_8888);
nativeApplyFilter(bitmapIn, bitmapIn.getWidth(), bitmapIn.getHeight(), mBitmapOut,
outputSize, mParameter / 100f, 0f);
return mBitmapOut;
}
private Bitmap applyXmp(Bitmap bitmapIn, ImagePreset preset) {
try {
XMPMeta xmp = preset.getImageLoader().getXmpObject();
if (xmp == null) {
// Do nothing, just use bitmapIn as is.
return bitmapIn;
}
int croppedAreaWidth =
getInt(xmp, CROPPED_AREA_IMAGE_WIDTH_PIXELS);
int croppedAreaHeight =
getInt(xmp, CROPPED_AREA_IMAGE_HEIGHT_PIXELS);
int fullPanoWidth =
getInt(xmp, CROPPED_AREA_FULL_PANO_WIDTH_PIXELS);
int fullPanoHeight =
getInt(xmp, CROPPED_AREA_FULL_PANO_HEIGHT_PIXELS);
int left = getInt(xmp, CROPPED_AREA_LEFT);
int top = getInt(xmp, CROPPED_AREA_TOP);
Bitmap paddedBitmap = Bitmap.createBitmap(
fullPanoWidth, fullPanoHeight, Bitmap.Config.ARGB_8888);
Canvas paddedCanvas = new Canvas(paddedBitmap);
int right = left + croppedAreaWidth;
int bottom = top + croppedAreaHeight;
Rect destRect = new Rect(left, top, right, bottom);
paddedCanvas.drawBitmap(bitmapIn, null, destRect, null);
bitmapIn = paddedBitmap;
} catch (XMPException ex) {
// Do nothing, just use bitmapIn as is.
}
return bitmapIn;
}
private static int getInt(XMPMeta xmp, String key) throws XMPException {
if (xmp.doesPropertyExist(GOOGLE_PANO_NAMESPACE, key)) {
return xmp.getPropertyInteger(GOOGLE_PANO_NAMESPACE, key);
} else {
return 0;
}
}
}
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