| /* |
| * Copyright (C) 2014 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.hardware.camera2.marshal.impl; |
| |
| import static android.hardware.camera2.impl.CameraMetadataNative.*; |
| import static android.hardware.camera2.marshal.MarshalHelpers.*; |
| |
| import android.hardware.camera2.marshal.Marshaler; |
| import android.hardware.camera2.marshal.MarshalQueryable; |
| import android.hardware.camera2.utils.TypeReference; |
| |
| import java.nio.ByteBuffer; |
| |
| /** |
| * Marshal fake native enums (ints): TYPE_BYTE <-> int/Integer |
| */ |
| public class MarshalQueryableNativeByteToInteger implements MarshalQueryable<Integer> { |
| |
| private static final int UINT8_MASK = (1 << Byte.SIZE) - 1; |
| |
| private class MarshalerNativeByteToInteger extends Marshaler<Integer> { |
| protected MarshalerNativeByteToInteger(TypeReference<Integer> typeReference, |
| int nativeType) { |
| super(MarshalQueryableNativeByteToInteger.this, typeReference, nativeType); |
| } |
| |
| @Override |
| public void marshal(Integer value, ByteBuffer buffer) { |
| buffer.put((byte)(int)value); // truncate down to byte |
| } |
| |
| @Override |
| public Integer unmarshal(ByteBuffer buffer) { |
| // expand unsigned byte to int; avoid sign extension |
| return buffer.get() & UINT8_MASK; |
| } |
| |
| @Override |
| public int getNativeSize() { |
| return SIZEOF_BYTE; |
| } |
| } |
| |
| @Override |
| public Marshaler<Integer> createMarshaler(TypeReference<Integer> managedType, |
| int nativeType) { |
| return new MarshalerNativeByteToInteger(managedType, nativeType); |
| } |
| |
| @Override |
| public boolean isTypeMappingSupported(TypeReference<Integer> managedType, int nativeType) { |
| return (Integer.class.equals(managedType.getType()) |
| || int.class.equals(managedType.getType())) && nativeType == TYPE_BYTE; |
| } |
| |
| |
| } |