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/*
* Copyright (C) 2008 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 android.renderscript;
public class FieldPacker {
public FieldPacker(int len) {
mPos = 0;
mData = new byte[len];
}
public void align(int v) {
while ((mPos & (v - 1)) != 0) {
mData[mPos++] = 0;
}
}
void reset() {
mPos = 0;
}
void addI8(byte v) {
mData[mPos++] = v;
}
void addI16(short v) {
align(2);
mData[mPos++] = (byte)(v & 0xff);
mData[mPos++] = (byte)(v >> 8);
}
void addI32(int v) {
align(4);
mData[mPos++] = (byte)(v & 0xff);
mData[mPos++] = (byte)((v >> 8) & 0xff);
mData[mPos++] = (byte)((v >> 16) & 0xff);
mData[mPos++] = (byte)((v >> 24) & 0xff);
}
void addI64(long v) {
align(8);
mData[mPos++] = (byte)(v & 0xff);
mData[mPos++] = (byte)((v >> 8) & 0xff);
mData[mPos++] = (byte)((v >> 16) & 0xff);
mData[mPos++] = (byte)((v >> 24) & 0xff);
mData[mPos++] = (byte)((v >> 32) & 0xff);
mData[mPos++] = (byte)((v >> 40) & 0xff);
mData[mPos++] = (byte)((v >> 48) & 0xff);
mData[mPos++] = (byte)((v >> 56) & 0xff);
}
void addU8(short v) {
if ((v < 0) || (v > 0xff)) {
throw new IllegalArgumentException("Saving value out of range for type");
}
mData[mPos++] = (byte)v;
}
void addU16(int v) {
if ((v < 0) || (v > 0xffff)) {
throw new IllegalArgumentException("Saving value out of range for type");
}
align(2);
mData[mPos++] = (byte)(v & 0xff);
mData[mPos++] = (byte)(v >> 8);
}
void addU32(long v) {
if ((v < 0) || (v > 0xffffffff)) {
throw new IllegalArgumentException("Saving value out of range for type");
}
align(4);
mData[mPos++] = (byte)(v & 0xff);
mData[mPos++] = (byte)((v >> 8) & 0xff);
mData[mPos++] = (byte)((v >> 16) & 0xff);
mData[mPos++] = (byte)((v >> 24) & 0xff);
}
void addU64(long v) {
if (v < 0) {
throw new IllegalArgumentException("Saving value out of range for type");
}
align(8);
mData[mPos++] = (byte)(v & 0xff);
mData[mPos++] = (byte)((v >> 8) & 0xff);
mData[mPos++] = (byte)((v >> 16) & 0xff);
mData[mPos++] = (byte)((v >> 24) & 0xff);
mData[mPos++] = (byte)((v >> 32) & 0xff);
mData[mPos++] = (byte)((v >> 40) & 0xff);
mData[mPos++] = (byte)((v >> 48) & 0xff);
mData[mPos++] = (byte)((v >> 56) & 0xff);
}
void addF32(float v) {
addI32(Float.floatToRawIntBits(v));
}
void addF64(float v) {
addI64(Double.doubleToRawLongBits(v));
}
final byte[] getData() {
return mData;
}
private final byte mData[];
private int mPos;
}
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