| /* |
| * 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; |
| |
| } |
| |
| |