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/*
* Copyright (C) 2013 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.cache;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.util.Log;
import com.android.gallery3d.filtershow.pipeline.Buffer;
import com.android.gallery3d.filtershow.pipeline.CacheProcessing;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.HashMap;
public class BitmapCache {
private static final String LOGTAG = "BitmapCache";
private HashMap<Long, ArrayList<WeakReference<Bitmap>>>
mBitmapCache = new HashMap<Long, ArrayList<WeakReference<Bitmap>>>();
private final int mMaxItemsPerKey = 4;
private static final boolean DEBUG = false;
private CacheProcessing mCacheProcessing;
public final static int PREVIEW_CACHE = 1;
public final static int NEW_LOOK = 2;
public final static int ICON = 3;
public final static int FILTERS = 4;
public final static int GEOMETRY = 5;
public final static int HIGHRES = 6;
public final static int UTIL_GEOMETRY = 7;
public final static int RENDERING_REQUEST = 8;
public final static int REGION = 9;
public final static int TINY_PLANET = 10;
public final static int PREVIEW_CACHE_NO_FILTERS = 11;
public final static int PREVIEW_CACHE_NO_ROOT = 12;
public static final int PREVIEW_CACHE_NO_APPLY = 13;
public final static int TRACKING_COUNT = 14;
private int[] mTracking = new int[TRACKING_COUNT];
class BitmapTracking {
Bitmap bitmap;
int type;
}
private ArrayList<BitmapTracking> mBitmapTracking = new ArrayList<BitmapTracking>();
private void track(Bitmap bitmap, int type) {
for (int i = 0; i < mBitmapTracking.size(); i++) {
BitmapTracking tracking = mBitmapTracking.get(i);
if (tracking.bitmap == bitmap) {
Log.e(LOGTAG, "giving a bitmap already given!!!");
}
}
BitmapTracking tracking = new BitmapTracking();
tracking.bitmap = bitmap;
tracking.type = type;
mBitmapTracking.add(tracking);
mTracking[tracking.type] ++;
}
private void untrack(Bitmap bitmap) {
for (int i = 0; i < mBitmapTracking.size(); i++) {
BitmapTracking tracking = mBitmapTracking.get(i);
if (tracking.bitmap == bitmap) {
mTracking[tracking.type] --;
mBitmapTracking.remove(i);
return;
}
}
}
public String getTrackingName(int i) {
switch (i) {
case PREVIEW_CACHE: return "PREVIEW_CACHE";
case PREVIEW_CACHE_NO_FILTERS: return "PREVIEW_CACHE_NO_FILTERS";
case PREVIEW_CACHE_NO_ROOT: return "PREVIEW_CACHE_NO_ROOT";
case PREVIEW_CACHE_NO_APPLY: return "PREVIEW_CACHE_NO_APPLY";
case NEW_LOOK: return "NEW_LOOK";
case ICON: return "ICON";
case FILTERS: return "FILTERS";
case GEOMETRY: return "GEOMETRY";
case HIGHRES: return "HIGHRES";
case UTIL_GEOMETRY: return "UTIL_GEOMETRY";
case RENDERING_REQUEST: return "RENDERING_REQUEST";
case REGION: return "REGION";
case TINY_PLANET: return "TINY_PLANET";
}
return "UNKNOWN";
}
public void showBitmapCounts() {
if (!DEBUG) {
return;
}
Log.v(LOGTAG, "\n--- showBitmap --- ");
for (int i = 0; i < TRACKING_COUNT; i++) {
if (mTracking[i] != 0) {
Log.v(LOGTAG, getTrackingName(i) + " => " + mTracking[i]);
}
}
}
public void setCacheProcessing(CacheProcessing cache) {
mCacheProcessing = cache;
}
public void cache(Buffer buffer) {
if (buffer == null) {
return;
}
Bitmap bitmap = buffer.getBitmap();
cache(bitmap);
}
public synchronized boolean cache(Bitmap bitmap) {
if (bitmap == null) {
return true;
}
if (mCacheProcessing != null && mCacheProcessing.contains(bitmap)) {
Log.e(LOGTAG, "Trying to cache a bitmap still used in the pipeline");
return false;
}
if (DEBUG) {
untrack(bitmap);
}
if (!bitmap.isMutable()) {
Log.e(LOGTAG, "Trying to cache a non mutable bitmap");
return true;
}
Long key = calcKey(bitmap.getWidth(), bitmap.getHeight());
ArrayList<WeakReference<Bitmap>> list = mBitmapCache.get(key);
if (list == null) {
list = new ArrayList<WeakReference<Bitmap>>();
mBitmapCache.put(key, list);
}
int i = 0;
while (i < list.size()) {
if (list.get(i).get() == null) {
list.remove(i);
} else {
i++;
}
}
for (i = 0; i < list.size(); i++) {
if (list.get(i).get() == null) {
list.remove(i);
}
}
if (list.size() < mMaxItemsPerKey) {
for (i = 0; i < list.size(); i++) {
WeakReference<Bitmap> ref = list.get(i);
if (ref.get() == bitmap) {
return true; // bitmap already in the cache
}
}
list.add(new WeakReference<Bitmap>(bitmap));
}
return true;
}
public synchronized Bitmap getBitmap(int w, int h, int type) {
Long key = calcKey(w, h);
WeakReference<Bitmap> ref = null;
ArrayList<WeakReference<Bitmap>> list = mBitmapCache.get(key);
if (list != null && list.size() > 0) {
ref = list.remove(0);
if (list.size() == 0) {
mBitmapCache.remove(key);
}
}
Bitmap bitmap = null;
if (ref != null) {
bitmap = ref.get();
}
if (bitmap == null
|| bitmap.getWidth() != w
|| bitmap.getHeight() != h) {
bitmap = Bitmap.createBitmap(
w, h, Bitmap.Config.ARGB_8888);
showBitmapCounts();
}
if (DEBUG) {
track(bitmap, type);
if (mCacheProcessing != null && mCacheProcessing.contains(bitmap)) {
Log.e(LOGTAG, "Trying to give a bitmap used in the pipeline");
}
}
return bitmap;
}
public synchronized Bitmap getBitmapCopy(Bitmap source, int type) {
Bitmap bitmap = getBitmap(source.getWidth(), source.getHeight(), type);
Canvas canvas = new Canvas(bitmap);
canvas.drawBitmap(source, 0, 0, null);
return bitmap;
}
private Long calcKey(long w, long h) {
return (w << 32) | h;
}
}
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