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/*
* Copyright (C) 2009 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.launcher2;
import android.renderscript.Allocation;
import android.renderscript.Element;
import android.renderscript.RenderScript;
import android.util.Log;
import java.lang.reflect.Field;
public class IntAllocation {
private RenderScript mRS;
private int[] mBuffer;
private Allocation mAlloc;
public IntAllocation(RenderScript rs) {
mRS = rs;
}
public void save() {
Field[] fields = this.getClass().getFields();
if (mBuffer == null) {
int maxIndex = 0;
for (Field f: fields) {
AllocationIndex index = f.getAnnotation(AllocationIndex.class);
if (index != null) {
int value = index.value();
if (value > maxIndex) {
maxIndex = value;
}
}
}
mBuffer = new int[maxIndex+1];
if (true) {
// helpful debugging check
for (Field f: fields) {
AllocationIndex index = f.getAnnotation(AllocationIndex.class);
if (index != null) {
int i = index.value();
if (mBuffer[i] != 0) {
throw new RuntimeException("@AllocationIndex on field in class "
+ this.getClass().getName() + " with duplicate value "
+ i + " for field " + f.getName() + ". The other field is "
+ fields[mBuffer[i]-1].getName() + '.');
}
mBuffer[i] = i+1;
}
}
for (int i=0; i<mBuffer.length; i++) {
mBuffer[i] = 0;
}
}
mAlloc = Allocation.createSized(mRS, Element.USER_I32, mBuffer.length);
}
int[] buf = mBuffer;
for (Field f: fields) {
AllocationIndex index = f.getAnnotation(AllocationIndex.class);
if (index != null) {
try {
buf[index.value()] = f.getInt(this);
} catch (IllegalAccessException ex) {
throw new RuntimeException(ex);
}
}
}
mAlloc.data(buf);
}
public void read() {
int[] buf = mBuffer;
if (buf != null) {
mAlloc.readData(buf);
Field[] fields = this.getClass().getFields();
for (Field f: fields) {
AllocationIndex index = f.getAnnotation(AllocationIndex.class);
if (index != null) {
try {
f.setInt(this, buf[index.value()]);
} catch (IllegalAccessException ex) {
throw new RuntimeException(ex);
}
}
}
}
}
Allocation getAllocation() {
return mAlloc;
}
}
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