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 
17 package com.android.camera.hardware;
18 
19 import com.android.camera.app.CameraProvider;
20 import com.android.camera.one.OneCamera;
21 import com.android.camera.one.config.OneCameraFeatureConfig;
22 import com.android.camera.util.GcamHelper;
23 import com.android.ex.camera2.portability.CameraCapabilities;
24 
25 /**
26  * HardwareSpecImpl is the default implementation of
27  * {@link com.android.camera.hardware.HardwareSpec} for
28  * a camera device opened using the {@link android.hardware.Camera}
29  * api.
30  */
31 public class HardwareSpecImpl implements HardwareSpec {
32 
33     private final boolean mIsFrontCameraSupported;
34     private final boolean mIsHdrSupported;
35     private final boolean mIsHdrPlusSupported;
36     private final boolean mIsFlashSupported;
37 
38     /**
39      * Compute the supported values for all
40      * {@link com.android.camera.hardware.HardwareSpec} methods
41      */
HardwareSpecImpl(CameraProvider provider, CameraCapabilities capabilities, OneCameraFeatureConfig featureConfig, boolean isFrontCamera)42     public HardwareSpecImpl(CameraProvider provider, CameraCapabilities capabilities,
43                             OneCameraFeatureConfig featureConfig, boolean isFrontCamera) {
44         // Cache whether front camera is supported.
45         mIsFrontCameraSupported = (provider.getFirstFrontCameraId() != -1);
46 
47         // Cache whether hdr is supported.
48         mIsHdrSupported = capabilities.supports(CameraCapabilities.SceneMode.HDR);
49 
50         // Cache whether hdr plus is supported.
51         OneCamera.Facing cameraFacing =
52                 isFrontCamera ? OneCamera.Facing.FRONT : OneCamera.Facing.BACK;
53         mIsHdrPlusSupported = featureConfig.getHdrPlusSupportLevel(cameraFacing) !=
54                 OneCameraFeatureConfig.HdrPlusSupportLevel.NONE;
55 
56         // Cache whether flash is supported.
57         mIsFlashSupported = isFlashSupported(capabilities);
58     }
59 
60     @Override
isFrontCameraSupported()61     public boolean isFrontCameraSupported() {
62         return mIsFrontCameraSupported;
63     }
64 
65     @Override
isHdrSupported()66     public boolean isHdrSupported() {
67         return mIsHdrSupported;
68     }
69 
70     @Override
isHdrPlusSupported()71     public boolean isHdrPlusSupported() {
72         return mIsHdrPlusSupported;
73     }
74 
75     @Override
isFlashSupported()76     public boolean isFlashSupported() {
77         return mIsFlashSupported;
78     }
79 
80     /**
81      * Returns whether flash is supported and flash has more than
82      * one possible value.
83      */
isFlashSupported(CameraCapabilities capabilities)84     private boolean isFlashSupported(CameraCapabilities capabilities) {
85         return (capabilities.supports(CameraCapabilities.FlashMode.AUTO) || capabilities.supports
86                 (CameraCapabilities.FlashMode.ON));
87     }
88 }
89