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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.devcamera;
import android.graphics.ImageFormat;
import android.graphics.Rect;
import android.hardware.camera2.CameraCharacteristics;
import android.hardware.camera2.CameraManager;
import android.hardware.camera2.CameraMetadata;
import android.hardware.camera2.params.StreamConfigurationMap;
import android.os.Build;
import android.util.Log;
import android.util.Size;
/**
* Caches (static) information about the first/main camera.
* Convenience functions represent data from CameraCharacteristics.
*/
public class CameraInfoCache {
private static final String TAG = "DevCamera_CAMINFO";
public static final boolean IS_NEXUS_5 = "hammerhead".equalsIgnoreCase(Build.DEVICE);
public static final boolean IS_NEXUS_6 = "shamu".equalsIgnoreCase(Build.DEVICE);
public static final boolean IS_NEXUS_9 = "flounder".equalsIgnoreCase(Build.DEVICE);
public static final boolean IS_ANGLER = "angler".equalsIgnoreCase(Build.DEVICE);
public static final boolean IS_BULLHEAD = "bullhead".equalsIgnoreCase(Build.DEVICE);
public static final boolean IS_SAMSUNG_S6 = "zerofltevzw".equalsIgnoreCase(Build.DEVICE);
public static final boolean IS_LG_G4 = "p1_lgu_kr".equalsIgnoreCase(Build.PRODUCT);
public int[] noiseModes;
public int[] edgeModes;
private CameraCharacteristics mCameraCharacteristics;
private String mCameraId;
private Size mLargestYuvSize;
private Size mLargestJpegSize;
private Size mRawSize;
private Rect mActiveArea;
private Integer mSensorOrientation;
private Integer mRawFormat;
private int mBestFaceMode;
private boolean mCamera2FullModeAvailable;
/**
* Constructor.
*/
public CameraInfoCache(CameraManager cameraMgr, boolean useFrontCamera) {
String[] cameralist;
try {
cameralist = cameraMgr.getCameraIdList();
for (String id : cameralist) {
mCameraCharacteristics = cameraMgr.getCameraCharacteristics(id);
Integer facing = mCameraCharacteristics.get(CameraCharacteristics.LENS_FACING);
if (facing == (useFrontCamera ? CameraMetadata.LENS_FACING_FRONT : CameraMetadata.LENS_FACING_BACK)) {
mCameraId = id;
break;
}
}
} catch (Exception e) {
Log.e(TAG, "ERROR: Could not get camera ID list / no camera information is available: " + e);
return;
}
// Should have mCameraId as this point.
if (mCameraId == null) {
Log.e(TAG, "ERROR: Could not find a suitable rear or front camera.");
return;
}
// Store YUV_420_888, JPEG, Raw info
StreamConfigurationMap map = mCameraCharacteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
int[] formats = map.getOutputFormats();
long lowestStall = Long.MAX_VALUE;
for (int i = 0; i < formats.length; i++) {
if (formats[i] == ImageFormat.YUV_420_888) {
mLargestYuvSize = returnLargestSize(map.getOutputSizes(formats[i]));
}
if (formats[i] == ImageFormat.JPEG) {
mLargestJpegSize = returnLargestSize(map.getOutputSizes(formats[i]));
}
if (formats[i] == ImageFormat.RAW10 || formats[i] == ImageFormat.RAW_SENSOR) { // TODO: Add RAW12
Size size = returnLargestSize(map.getOutputSizes(formats[i]));
long stall = map.getOutputStallDuration(formats[i], size);
if (stall < lowestStall) {
mRawFormat = formats[i];
mRawSize = size;
lowestStall = stall;
}
}
}
mActiveArea = mCameraCharacteristics.get(CameraCharacteristics.SENSOR_INFO_ACTIVE_ARRAY_SIZE);
// Compute best face mode.
int[] faceModes = mCameraCharacteristics.get(CameraCharacteristics.STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES);
for (int i=0; i<faceModes.length; i++) {
if (faceModes[i] > mBestFaceMode) {
mBestFaceMode = faceModes[i];
}
}
edgeModes = mCameraCharacteristics.get(CameraCharacteristics.EDGE_AVAILABLE_EDGE_MODES);
noiseModes = mCameraCharacteristics.get(CameraCharacteristics.NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES);
// Misc stuff.
int hwLevel = mCameraCharacteristics.get(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL);
mCamera2FullModeAvailable = (hwLevel != CameraMetadata.INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY)
&& (hwLevel >= CameraMetadata.INFO_SUPPORTED_HARDWARE_LEVEL_FULL);
mSensorOrientation = mCameraCharacteristics.get(CameraCharacteristics.SENSOR_ORIENTATION);
}
public int sensorOrientation() {
return mSensorOrientation;
}
public boolean isCamera2FullModeAvailable() {
return mCamera2FullModeAvailable;
}
public float getDiopterLow() {
if (IS_NEXUS_6) {
return 0f;
}
return 0f; // Infinity
}
public float getDiopterHi() {
if (IS_NEXUS_6) {
return 14.29f;
}
return 16f;
}
/**
* Private utility function.
*/
private Size returnLargestSize(Size[] sizes) {
Size largestSize = null;
int area = 0;
for (int j = 0; j < sizes.length; j++) {
if (sizes[j].getHeight() * sizes[j].getWidth() > area) {
area = sizes[j].getHeight() * sizes[j].getWidth();
largestSize = sizes[j];
}
}
return largestSize;
}
public int bestFaceDetectionMode() {
return mBestFaceMode;
}
public int faceOffsetX() {
return (mActiveArea.width() - mLargestYuvSize.getWidth()) / 2;
}
public int faceOffsetY() {
return (mActiveArea.height() - mLargestYuvSize.getHeight()) / 2;
}
public int activeAreaWidth() {
return mActiveArea.width();
}
public int activeAreaHeight() {
return mActiveArea.height();
}
public Rect getActiveAreaRect() {
return mActiveArea;
}
public String getCameraId() {
return mCameraId;
}
public Size getPreviewSize() {
float aspect = mLargestYuvSize.getWidth() / mLargestYuvSize.getHeight();
aspect = aspect > 1f ? aspect : 1f / aspect;
if (aspect > 1.6) {
return new Size(1920, 1080); // TODO: Check available resolutions.
}
if (IS_ANGLER || IS_BULLHEAD) {
return new Size(1440, 1080);
}
return new Size(1280, 960); // TODO: Check available resolutions.
}
public Size getJpegStreamSize() {
return mLargestJpegSize;
}
public Size getYuvStream1Size() {
return mLargestYuvSize;
}
public Size getYuvStream2Size() {
return new Size(320, 240);
}
public boolean rawAvailable() {
return mRawSize != null;
}
public boolean reprocessingAvailable() {
// TODO: Actually query capabilities list.
return (IS_ANGLER || IS_BULLHEAD);
}
public Integer getRawFormat() {
return mRawFormat;
}
public Size getRawStreamSize() {
return mRawSize;
}
}
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