1 /*
2  * Copyright (C) 2014 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package android.hardware.camera2.marshal.impl;
17 
18 import android.graphics.Rect;
19 import android.hardware.camera2.marshal.Marshaler;
20 import android.hardware.camera2.marshal.MarshalQueryable;
21 import android.hardware.camera2.utils.TypeReference;
22 
23 import java.nio.ByteBuffer;
24 
25 import static android.hardware.camera2.impl.CameraMetadataNative.*;
26 import static android.hardware.camera2.marshal.MarshalHelpers.*;
27 
28 /**
29  * Marshal {@link Rect} to/from {@link #TYPE_INT32}
30  */
31 public class MarshalQueryableRect implements MarshalQueryable<Rect> {
32     private static final int SIZE = SIZEOF_INT32 * 4;
33 
34     private class MarshalerRect extends Marshaler<Rect> {
MarshalerRect(TypeReference<Rect> typeReference, int nativeType)35         protected MarshalerRect(TypeReference<Rect> typeReference,
36                 int nativeType) {
37             super(MarshalQueryableRect.this, typeReference, nativeType);
38         }
39 
40         @Override
marshal(Rect value, ByteBuffer buffer)41         public void marshal(Rect value, ByteBuffer buffer) {
42             buffer.putInt(value.left);
43             buffer.putInt(value.top);
44             buffer.putInt(value.width());
45             buffer.putInt(value.height());
46         }
47 
48         @Override
unmarshal(ByteBuffer buffer)49         public Rect unmarshal(ByteBuffer buffer) {
50             int left = buffer.getInt();
51             int top = buffer.getInt();
52             int width = buffer.getInt();
53             int height = buffer.getInt();
54 
55             int right = left + width;
56             int bottom = top + height;
57 
58             return new Rect(left, top, right, bottom);
59         }
60 
61         @Override
getNativeSize()62         public int getNativeSize() {
63             return SIZE;
64         }
65     }
66 
67     @Override
createMarshaler(TypeReference<Rect> managedType, int nativeType)68     public Marshaler<Rect> createMarshaler(TypeReference<Rect> managedType, int nativeType) {
69         return new MarshalerRect(managedType, nativeType);
70     }
71 
72     @Override
isTypeMappingSupported(TypeReference<Rect> managedType, int nativeType)73     public boolean isTypeMappingSupported(TypeReference<Rect> managedType, int nativeType) {
74         return nativeType == TYPE_INT32 && (Rect.class.equals(managedType.getType()));
75     }
76 
77 }
78