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.util.GcamHelper; 21 import com.android.ex.camera2.portability.CameraCapabilities; 22 23 /** 24 * HardwareSpecImpl is the default implementation of 25 * {@link com.android.camera.hardware.HardwareSpec} for 26 * a camera device opened using the {@link android.hardware.Camera} 27 * api. 28 */ 29 public class HardwareSpecImpl implements HardwareSpec { 30 31 private final boolean mIsFrontCameraSupported; 32 private final boolean mIsHdrSupported; 33 private final boolean mIsHdrPlusSupported; 34 private final boolean mIsFlashSupported; 35 36 /** 37 * Compute the supported values for all 38 * {@link com.android.camera.hardware.HardwareSpec} methods 39 */ HardwareSpecImpl(CameraProvider provider, CameraCapabilities capabilities)40 public HardwareSpecImpl(CameraProvider provider, CameraCapabilities capabilities) { 41 // Cache whether front camera is supported. 42 mIsFrontCameraSupported = (provider.getFirstFrontCameraId() != -1); 43 44 // Cache whether hdr is supported. 45 mIsHdrSupported = capabilities.supports(CameraCapabilities.SceneMode.HDR); 46 47 // Cache whether hdr plus is supported. 48 mIsHdrPlusSupported = GcamHelper.hasGcamCapture(); 49 50 // Cache whether flash is supported. 51 mIsFlashSupported = isFlashSupported(capabilities); 52 } 53 54 @Override isFrontCameraSupported()55 public boolean isFrontCameraSupported() { 56 return mIsFrontCameraSupported; 57 } 58 59 @Override isHdrSupported()60 public boolean isHdrSupported() { 61 return mIsHdrSupported; 62 } 63 64 @Override isHdrPlusSupported()65 public boolean isHdrPlusSupported() { 66 return mIsHdrPlusSupported; 67 } 68 69 @Override isFlashSupported()70 public boolean isFlashSupported() { 71 return mIsFlashSupported; 72 } 73 74 /** 75 * Returns whether flash is supported and flash has more than 76 * one possible value. 77 */ isFlashSupported(CameraCapabilities capabilities)78 private boolean isFlashSupported(CameraCapabilities capabilities) { 79 return (capabilities.supports(CameraCapabilities.FlashMode.AUTO) || capabilities.supports 80 (CameraCapabilities.FlashMode.ON)); 81 } 82 } 83