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.hardware.camera2.marshal.Marshaler;
19 import android.hardware.camera2.marshal.MarshalQueryable;
20 import android.hardware.camera2.params.ColorSpaceTransform;
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 ColorSpaceTransform} to/from {@link #TYPE_RATIONAL}
30  */
31 public class MarshalQueryableColorSpaceTransform implements
32         MarshalQueryable<ColorSpaceTransform> {
33 
34     private static final int ELEMENTS_INT32 = 3 * 3 * (SIZEOF_RATIONAL / SIZEOF_INT32);
35     private static final int SIZE = SIZEOF_INT32 * ELEMENTS_INT32;
36 
37     /** rational x 3 x 3 */
38     private class MarshalerColorSpaceTransform extends Marshaler<ColorSpaceTransform> {
MarshalerColorSpaceTransform(TypeReference<ColorSpaceTransform> typeReference, int nativeType)39         protected MarshalerColorSpaceTransform(TypeReference<ColorSpaceTransform> typeReference,
40                 int nativeType) {
41             super(MarshalQueryableColorSpaceTransform.this, typeReference, nativeType);
42         }
43 
44         @Override
marshal(ColorSpaceTransform value, ByteBuffer buffer)45         public void marshal(ColorSpaceTransform value, ByteBuffer buffer) {
46             int[] transformAsArray = new int[ELEMENTS_INT32];
47             value.copyElements(transformAsArray, /*offset*/0);
48 
49             for (int i = 0; i < ELEMENTS_INT32; ++i) {
50                 buffer.putInt(transformAsArray[i]);
51             }
52         }
53 
54         @Override
unmarshal(ByteBuffer buffer)55         public ColorSpaceTransform unmarshal(ByteBuffer buffer) {
56             int[] transformAsArray = new int[ELEMENTS_INT32];
57 
58             for (int i = 0; i < ELEMENTS_INT32; ++i) {
59                 transformAsArray[i] = buffer.getInt();
60             }
61 
62             return new ColorSpaceTransform(transformAsArray);
63         }
64 
65         @Override
getNativeSize()66         public int getNativeSize() {
67             return SIZE;
68         }
69     }
70 
71     @Override
createMarshaler( TypeReference<ColorSpaceTransform> managedType, int nativeType)72     public Marshaler<ColorSpaceTransform> createMarshaler(
73             TypeReference<ColorSpaceTransform> managedType, int nativeType) {
74         return new MarshalerColorSpaceTransform(managedType, nativeType);
75     }
76 
77     @Override
isTypeMappingSupported( TypeReference<ColorSpaceTransform> managedType, int nativeType)78     public boolean isTypeMappingSupported(
79             TypeReference<ColorSpaceTransform> managedType, int nativeType) {
80         return nativeType == TYPE_RATIONAL &&
81                 ColorSpaceTransform.class.equals(managedType.getType());
82     }
83 
84 }
85