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.one; 18 19 /** 20 * Contains 3A parameters common to all camera flavors. 21 * TODO: Move to GservicesHelper. 22 */ 23 public class Settings3A { 24 25 /** 26 * Width of touch AF region in [0,1] relative to shorter edge of the current 27 * crop region. Multiply this number by the number of pixels along the 28 * shorter edge of the current crop region's width to get a value in pixels. 29 * 30 * <p> 31 * This value has been tested on Nexus 5 and Shamu, but will need to be 32 * tuned per device depending on how its ISP interprets the metering box and weight. 33 * </p> 34 * 35 * <p> 36 * Values prior to L release: 37 * Normal mode: 0.125 * longest edge 38 * Gcam: Fixed at 300px x 300px. 39 * </p> 40 */ 41 private static final float AF_REGION_BOX = 0.2f; 42 43 /** 44 * Width of touch metering region in [0,1] relative to shorter edge of the 45 * current crop region. Multiply this number by the number of pixels along 46 * shorter edge of the current crop region's width to get a value in pixels. 47 * 48 * <p> 49 * This value has been tested on Nexus 5 and Shamu, but will need to be 50 * tuned per device depending on how its ISP interprets the metering box and weight. 51 * </p> 52 * 53 * <p> 54 * Values prior to L release: 55 * Normal mode: 0.1875 * longest edge 56 * Gcam: Fixed at 300px x 300px. 57 * </p> 58 */ 59 private static final float AE_REGION_BOX = 0.3f; 60 61 /** Metering region weight between 0 and 1. 62 * 63 * <p> 64 * This value has been tested on Nexus 5 and Shamu, but will need to be 65 * tuned per device depending on how its ISP interprets the metering box and weight. 66 * </p> 67 */ 68 private static final float REGION_WEIGHT = 0.022f; 69 70 /** Duration to hold after manual tap to focus. */ 71 private static final int FOCUS_HOLD_MILLIS = 3000; 72 73 /** 74 * Width of touch metering region in [0,1] relative to shorter edge of the 75 * current crop region. Multiply this number by the number of pixels along 76 * shorter edge of the current crop region's width to get a value in pixels. 77 * 78 * <p> 79 * This value has been tested on Nexus 5 and Shamu, but will need to be 80 * tuned per device depending on how its ISP interprets the metering box and weight. 81 * </p> 82 * 83 * <p> 84 * Was fixed at 300px x 300px prior to L release. 85 * </p> 86 */ 87 private static final float GCAM_METERING_REGION_FRACTION = 0.1225f; 88 89 /** 90 * Weight of a touch metering region, in [0, \inf). 91 * 92 * <p> 93 * This value has been tested on Nexus 5 and Shamu, but will need to be 94 * tuned per device. 95 * </p> 96 * 97 * <p> 98 * Was fixed at 15.0f prior to L release. 99 * </p> 100 */ 101 private static final float GCAM_METERING_REGION_WEIGHT = 22.0f; 102 103 public static float getAutoFocusRegionWidth() { 104 return AF_REGION_BOX; 105 } 106 107 public static float getMeteringRegionWidth() { 108 return AE_REGION_BOX; 109 } 110 111 public static float getMeteringRegionWeight() { 112 return REGION_WEIGHT; 113 } 114 115 public static float getGcamMeteringRegionFraction() { 116 return GCAM_METERING_REGION_FRACTION; 117 } 118 119 public static float getGcamMeteringRegionWeight() { 120 return GCAM_METERING_REGION_WEIGHT; 121 } 122 123 public static int getFocusHoldMillis() { 124 return FOCUS_HOLD_MILLIS; 125 } 126 } 127
