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      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      */
     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
     61     public boolean isFrontCameraSupported() {
     62         return mIsFrontCameraSupported;
     63     }
     64 
     65     @Override
     66     public boolean isHdrSupported() {
     67         return mIsHdrSupported;
     68     }
     69 
     70     @Override
     71     public boolean isHdrPlusSupported() {
     72         return mIsHdrPlusSupported;
     73     }
     74 
     75     @Override
     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      */
     84     private boolean isFlashSupported(CameraCapabilities capabilities) {
     85         return (capabilities.supports(CameraCapabilities.FlashMode.AUTO) || capabilities.supports
     86                 (CameraCapabilities.FlashMode.ON));
     87     }
     88 }
     89