本文主要记录分析Android 系统相机部分源码
- 调用系统相机
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
startActivityForResult(intent, 1); Intent 的action是 MediaStore.ACTION_IMAGE_CAPTURE
- 系统响应的类是(调用系统相机，不考虑第三方注册，比如这篇注册为系统相机)
- 在线源码地址：http://androidxref.com/(源码见最下面)
- 调用类名：com.android.camera.Camera
- 源码版本 7.1.1_r6（android最新版）
- 类全路径：/packages/apps/LegacyCamera/src/com/android/camera/Camera.java
[注意] 不同android版本文件路径不一样，比如：
2.3.7 ：/packages/apps/Camera/src/com/android/camera/Camera.java
4.0.3_r1 ： /packages/apps/LegacyCamera/src/com/android/camera/Camera.java
只关心获取Intent参数部分和返回结果部分
获取Intent参数
- mQuickCapture = getIntent().getBooleanExtra(EXTRA_QUICK_CAPTURE, false);
- private boolean isImageCaptureIntent() {
return (MediaStore.ACTION_IMAGE_CAPTURE.equals(action));
} - private void setupCaptureParams() {
Bundle myExtras = getIntent().getExtras();
if (myExtras != null) {
mSaveUri = (Uri) myExtras.getParcelable(MediaStore.EXTRA_OUTPUT);
mCropValue = myExtras.getString(“crop”);
}
}
可以看出只支持三个参数 - 根据action 判断是否 ImageCapture
- 根据参数 android.intent.extra.quickCapture to return as soon as capturing is completed.
- 输出路径 MediaStore.EXTRA_OUTPUT
- “crop” .equals(“circle”) 是裁剪使用的，也就是说支持直接拍完照裁剪
返回结果 doAttach() 函数里
需要裁剪就内部调用裁剪功能，不需要裁剪时，判断是否有输出Uri，有输出就直接保存，没有就返回BitmapsetResultEx(RESULT_OK, new Intent("inline-data").putExtra("data", bitmap));
系统自带的人脸识别
Camera.setFaceDetectionListener(FaceDetectionListener listener)
在回调里更新FaceView的位置
public void onFaceDetection(Face[] faces, android.hardware.Camera camera);
FaceView 源码位置 ：
/packages/apps/LegacyCamera/src/com/android/camera/ui/FaceView.java
不过这个自带的人脸识别已经弃用了，当然其功能还是可以使用的。关于默认打开前置摄像头
从源代码里，Intent不支持传参数控制开哪个摄像头，但是网上有代码可以支持部分手机
intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); intent.putExtra("android.intent.extras.CAMERA_FACING", android.hardware.Camera.CameraInfo.CAMERA_FACING_FRONT); // 调用前置摄像头 startActivityForResult(intent, 1);源码里控制哪个相机打开的代码的是 Camera.java#getPreferredCameraId(),而里面是
1.从SharePreference里获得存储的默认的cameraId，应该是部分系统应用商可以在此处做文章，这只适用于Android Source的开发者，对于普通app开发，原谅我还没有找到好方式注入
2.确实可以Intent传参数打开摄像头，此处修复上文一个bug,
代码在/packages/apps/LegacyCamera/src/com/android/camera/Util.java#getCameraFacingIntentExtras , string tag 是 “android.intent.extras.CAMERA_FACING”,
[附] 源代码：/packages/apps/LegacyCamera/src/com/android/camera/Camera.java
package com.android.camera;
import com.android.camera.ui.CameraPicker;
import com.android.camera.ui.FaceView;
import com.android.camera.ui.IndicatorControlContainer;
import com.android.camera.ui.PopupManager;
import com.android.camera.ui.Rotatable;
import com.android.camera.ui.RotateImageView;
import com.android.camera.ui.RotateLayout;
import com.android.camera.ui.RotateTextToast;
import com.android.camera.ui.SharePopup;
import com.android.camera.ui.ZoomControl;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.ContentProviderClient;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences.Editor;
import android.content.pm.ActivityInfo;
import android.graphics.Bitmap;
import android.hardware.Camera.CameraInfo;
import android.hardware.Camera.Face;
import android.hardware.Camera.FaceDetectionListener;
import android.hardware.Camera.Parameters;
import android.hardware.Camera.PictureCallback;
import android.hardware.Camera.Size;
import android.location.Location;
import android.media.CameraProfile;
import android.media.MediaActionSound;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.os.MessageQueue;
import android.os.SystemClock;
import android.provider.MediaStore;
import android.util.Log;
import android.view.GestureDetector;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MenuItem.OnMenuItemClickListener;
import android.view.MotionEvent;
import android.view.OrientationEventListener;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Formatter;
import java.util.List;
/** The Camera activity which can preview and take pictures. */
public class Camera extends ActivityBase implements FocusManager.Listener, View.OnTouchListener, ShutterButton.OnShutterButtonListener, SurfaceHolder.Callback, ModePicker.OnModeChangeListener, FaceDetectionListener, CameraPreference.OnPreferenceChangedListener, LocationManager.Listener {
private static final String TAG = "camera";
private static final int CROP_MSG = 1;
private static final int FIRST_TIME_INIT = 2;
private static final int CLEAR_SCREEN_DELAY = 3;
private static final int SET_CAMERA_PARAMETERS_WHEN_IDLE = 4;
private static final int CHECK_DISPLAY_ROTATION = 5;
private static final int SHOW_TAP_TO_FOCUS_TOAST = 6;
private static final int UPDATE_THUMBNAIL = 7;
// The subset of parameters we need to update in setCameraParameters().
private static final int UPDATE_PARAM_INITIALIZE = 1;
private static final int UPDATE_PARAM_ZOOM = 2;
private static final int UPDATE_PARAM_PREFERENCE = 4;
private static final int UPDATE_PARAM_ALL = -1;
// When setCameraParametersWhenIdle() is called, we accumulate the subsets
// needed to be updated in mUpdateSet.
private int mUpdateSet;
private static final int SCREEN_DELAY = 2 * 60 * 1000;
private static final int ZOOM_STOPPED = 0;
private static final int ZOOM_START = 1;
private static final int ZOOM_STOPPING = 2;
private int mZoomState = ZOOM_STOPPED;
private boolean mSmoothZoomSupported = false;
private int mZoomValue; // The current zoom value.
private int mZoomMax;
private int mTargetZoomValue;
private ZoomControl mZoomControl;
private Parameters mParameters;
private Parameters mInitialParams;
private boolean mFocusAreaSupported;
private boolean mMeteringAreaSupported;
private boolean mAeLockSupported;
private boolean mAwbLockSupported;
private MyOrientationEventListener mOrientationListener;
// The degrees of the device rotated clockwise from its natural orientation.
private int mOrientation = OrientationEventListener.ORIENTATION_UNKNOWN;
// The orientation compensation for icons and thumbnails. Ex: if the value
// is 90, the UI components should be rotated 90 degrees counter-clockwise.
private int mOrientationCompensation = 0;
private ComboPreferences mPreferences;
private static final String sTempCropFilename = "crop-temp";
private ContentProviderClient mMediaProviderClient;
private SurfaceHolder mSurfaceHolder = null;
private ShutterButton mShutterButton;
private GestureDetector mPopupGestureDetector;
private boolean mOpenCameraFail = false;
private boolean mCameraDisabled = false;
private boolean mFaceDetectionStarted = false;
private View mPreviewPanel; // The container of PreviewFrameLayout.
private PreviewFrameLayout mPreviewFrameLayout;
private View mPreviewFrame; // Preview frame area.
private RotateDialogController mRotateDialog;
// A popup window that contains a bigger thumbnail and a list of apps to share.
private SharePopup mSharePopup;
// The bitmap of the last captured picture thumbnail and the URI of the
// original picture.
private Thumbnail mThumbnail;
// An imageview showing showing the last captured picture thumbnail.
private RotateImageView mThumbnailView;
private ModePicker mModePicker;
private FaceView mFaceView;
private RotateLayout mFocusAreaIndicator;
private Rotatable mReviewCancelButton;
private Rotatable mReviewDoneButton;
// mCropValue and mSaveUri are used only if isImageCaptureIntent() is true.
private String mCropValue;
private Uri mSaveUri;
// Small indicators which show the camera settings in the viewfinder.
private TextView mExposureIndicator;
private ImageView mGpsIndicator;
private ImageView mFlashIndicator;
private ImageView mSceneIndicator;
private ImageView mWhiteBalanceIndicator;
private ImageView mFocusIndicator;
// A view group that contains all the small indicators.
private Rotatable mOnScreenIndicators;
// We use a thread in ImageSaver to do the work of saving images and
// generating thumbnails. This reduces the shot-to-shot time.
private ImageSaver mImageSaver;
private MediaActionSound mCameraSound;
private Runnable mDoSnapRunnable = new Runnable() {
public void run() {
onShutterButtonClick();
}
};
private final StringBuilder mBuilder = new StringBuilder();
private final Formatter mFormatter = new Formatter(mBuilder);
private final Object[] mFormatterArgs = new Object[1];
/** * An unpublished intent flag requesting to return as soon as capturing * is completed. * * TODO: consider publishing by moving into MediaStore. */
private static final String EXTRA_QUICK_CAPTURE =
"android.intent.extra.quickCapture";
// The display rotation in degrees. This is only valid when mCameraState is
// not PREVIEW_STOPPED.
private int mDisplayRotation;
// The value for android.hardware.Camera.setDisplayOrientation.
private int mDisplayOrientation;
private boolean mPausing;
private boolean mFirstTimeInitialized;
private boolean mIsImageCaptureIntent;
private static final int PREVIEW_STOPPED = 0;
private static final int IDLE = 1; // preview is active
// Focus is in progress. The exact focus state is in Focus.java.
private static final int FOCUSING = 2;
private static final int SNAPSHOT_IN_PROGRESS = 3;
private int mCameraState = PREVIEW_STOPPED;
private boolean mSnapshotOnIdle = false;
private ContentResolver mContentResolver;
private boolean mDidRegister = false;
private LocationManager mLocationManager;
private final ShutterCallback mShutterCallback = new ShutterCallback();
private final PostViewPictureCallback mPostViewPictureCallback =
new PostViewPictureCallback();
private final RawPictureCallback mRawPictureCallback =
new RawPictureCallback();
private final AutoFocusCallback mAutoFocusCallback =
new AutoFocusCallback();
private final ZoomListener mZoomListener = new ZoomListener();
private final CameraErrorCallback mErrorCallback = new CameraErrorCallback();
private long mFocusStartTime;
private long mCaptureStartTime;
private long mShutterCallbackTime;
private long mPostViewPictureCallbackTime;
private long mRawPictureCallbackTime;
private long mJpegPictureCallbackTime;
private long mOnResumeTime;
private long mPicturesRemaining;
private byte[] mJpegImageData;
// These latency time are for the CameraLatency test.
public long mAutoFocusTime;
public long mShutterLag;
public long mShutterToPictureDisplayedTime;
public long mPictureDisplayedToJpegCallbackTime;
public long mJpegCallbackFinishTime;
// This handles everything about focus.
private FocusManager mFocusManager;
private String mSceneMode;
private Toast mNotSelectableToast;
private Toast mNoShareToast;
private final Handler mHandler = new MainHandler();
private IndicatorControlContainer mIndicatorControlContainer;
private PreferenceGroup mPreferenceGroup;
// multiple cameras support
private int mNumberOfCameras;
private int mCameraId;
private int mFrontCameraId;
private int mBackCameraId;
private boolean mQuickCapture;
/** * This Handler is used to post message back onto the main thread of the * application */
private class MainHandler extends Handler {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case CLEAR_SCREEN_DELAY: {
getWindow().clearFlags(
WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
break;
}
case FIRST_TIME_INIT: {
initializeFirstTime();
break;
}
case SET_CAMERA_PARAMETERS_WHEN_IDLE: {
setCameraParametersWhenIdle(0);
break;
}
case CHECK_DISPLAY_ROTATION: {
// Set the display orientation if display rotation has changed.
// Sometimes this happens when the device is held upside
// down and camera app is opened. Rotation animation will
// take some time and the rotation value we have got may be
// wrong. Framework does not have a callback for this now.
if (Util.getDisplayRotation(Camera.this) != mDisplayRotation) {
setDisplayOrientation();
}
if (SystemClock.uptimeMillis() - mOnResumeTime < 5000) {
mHandler.sendEmptyMessageDelayed(CHECK_DISPLAY_ROTATION, 100);
}
break;
}
case SHOW_TAP_TO_FOCUS_TOAST: {
showTapToFocusToast();
break;
}
case UPDATE_THUMBNAIL: {
mImageSaver.updateThumbnail();
break;
}
}
}
}
private void resetExposureCompensation() {
String value = mPreferences.getString(CameraSettings.KEY_EXPOSURE,
CameraSettings.EXPOSURE_DEFAULT_VALUE);
if (!CameraSettings.EXPOSURE_DEFAULT_VALUE.equals(value)) {
Editor editor = mPreferences.edit();
editor.putString(CameraSettings.KEY_EXPOSURE, "0");
editor.apply();
if (mIndicatorControlContainer != null) {
mIndicatorControlContainer.reloadPreferences();
}
}
}
private void keepMediaProviderInstance() {
// We want to keep a reference to MediaProvider in camera's lifecycle.
// TODO: Utilize mMediaProviderClient instance to replace
// ContentResolver calls.
if (mMediaProviderClient == null) {
mMediaProviderClient = getContentResolver()
.acquireContentProviderClient(MediaStore.AUTHORITY);
}
}
// Snapshots can only be taken after this is called. It should be called
// once only. We could have done these things in onCreate() but we want to
// make preview screen appear as soon as possible.
private void initializeFirstTime() {
if (mFirstTimeInitialized) return;
// Create orientation listenter. This should be done first because it
// takes some time to get first orientation.
mOrientationListener = new MyOrientationEventListener(Camera.this);
mOrientationListener.enable();
// Initialize location sevice.
boolean recordLocation = RecordLocationPreference.get(
mPreferences, getContentResolver());
initOnScreenIndicator();
mLocationManager.recordLocation(recordLocation);
keepMediaProviderInstance();
checkStorage();
// Initialize last picture button.
mContentResolver = getContentResolver();
if (!mIsImageCaptureIntent) { // no thumbnail in image capture intent
initThumbnailButton();
}
// Initialize shutter button.
mShutterButton = (ShutterButton) findViewById(R.id.shutter_button);
mShutterButton.setOnShutterButtonListener(this);
mShutterButton.setVisibility(View.VISIBLE);
// Initialize focus UI.
mPreviewFrame = findViewById(R.id.camera_preview);
mPreviewFrame.setOnTouchListener(this);
mFocusAreaIndicator = (RotateLayout) findViewById(R.id.focus_indicator_rotate_layout);
CameraInfo info = CameraHolder.instance().getCameraInfo()[mCameraId];
boolean mirror = (info.facing == CameraInfo.CAMERA_FACING_FRONT);
mFocusManager.initialize(mFocusAreaIndicator, mPreviewFrame, mFaceView, this,
mirror, mDisplayOrientation);
mImageSaver = new ImageSaver();
Util.initializeScreenBrightness(getWindow(), getContentResolver());
installIntentFilter();
initializeZoom();
updateOnScreenIndicators();
startFaceDetection();
// Show the tap to focus toast if this is the first start.
if (mFocusAreaSupported &&
mPreferences.getBoolean(CameraSettings.KEY_CAMERA_FIRST_USE_HINT_SHOWN, true)) {
// Delay the toast for one second to wait for orientation.
mHandler.sendEmptyMessageDelayed(SHOW_TAP_TO_FOCUS_TOAST, 1000);
}
mFirstTimeInitialized = true;
addIdleHandler();
}
private void addIdleHandler() {
MessageQueue queue = Looper.myQueue();
queue.addIdleHandler(new MessageQueue.IdleHandler() {
public boolean queueIdle() {
Storage.ensureOSXCompatible();
return false;
}
});
}
private void initThumbnailButton() {
// Load the thumbnail from the disk.
mThumbnail = Thumbnail.loadFrom(new File(getFilesDir(), Thumbnail.LAST_THUMB_FILENAME));
updateThumbnailButton();
}
private void updateThumbnailButton() {
// Update last image if URI is invalid and the storage is ready.
if ((mThumbnail == null || !Util.isUriValid(mThumbnail.getUri(), mContentResolver))
&& mPicturesRemaining >= 0) {
mThumbnail = Thumbnail.getLastThumbnail(mContentResolver);
}
if (mThumbnail != null) {
mThumbnailView.setBitmap(mThumbnail.getBitmap());
} else {
mThumbnailView.setBitmap(null);
}
}
// If the activity is paused and resumed, this method will be called in
// onResume.
private void initializeSecondTime() {
// Start orientation listener as soon as possible because it takes
// some time to get first orientation.
mOrientationListener.enable();
// Start location update if needed.
boolean recordLocation = RecordLocationPreference.get(
mPreferences, getContentResolver());
mLocationManager.recordLocation(recordLocation);
installIntentFilter();
mImageSaver = new ImageSaver();
initializeZoom();
keepMediaProviderInstance();
checkStorage();
hidePostCaptureAlert();
if (!mIsImageCaptureIntent) {
updateThumbnailButton();
mModePicker.setCurrentMode(ModePicker.MODE_CAMERA);
}
}
private class ZoomChangeListener implements ZoomControl.OnZoomChangedListener {
// only for immediate zoom
@Override
public void onZoomValueChanged(int index) {
Camera.this.onZoomValueChanged(index);
}
// only for smooth zoom
@Override
public void onZoomStateChanged(int state) {
if (mPausing) return;
Log.v(TAG, "zoom picker state=" + state);
if (state == ZoomControl.ZOOM_IN) {
Camera.this.onZoomValueChanged(mZoomMax);
} else if (state == ZoomControl.ZOOM_OUT) {
Camera.this.onZoomValueChanged(0);
} else {
mTargetZoomValue = -1;
if (mZoomState == ZOOM_START) {
mZoomState = ZOOM_STOPPING;
mCameraDevice.stopSmoothZoom();
}
}
}
}
private void initializeZoom() {
// Get the parameter to make sure we have the up-to-date zoom value.
mParameters = mCameraDevice.getParameters();
if (!mParameters.isZoomSupported()) return;
mZoomMax = mParameters.getMaxZoom();
// Currently we use immediate zoom for fast zooming to get better UX and
// there is no plan to take advantage of the smooth zoom.
mZoomControl.setZoomMax(mZoomMax);
mZoomControl.setZoomIndex(mParameters.getZoom());
mZoomControl.setSmoothZoomSupported(mSmoothZoomSupported);
mZoomControl.setOnZoomChangeListener(new ZoomChangeListener());
mCameraDevice.setZoomChangeListener(mZoomListener);
}
private void onZoomValueChanged(int index) {
// Not useful to change zoom value when the activity is paused.
if (mPausing) return;
if (mSmoothZoomSupported) {
if (mTargetZoomValue != index && mZoomState != ZOOM_STOPPED) {
mTargetZoomValue = index;
if (mZoomState == ZOOM_START) {
mZoomState = ZOOM_STOPPING;
mCameraDevice.stopSmoothZoom();
}
} else if (mZoomState == ZOOM_STOPPED && mZoomValue != index) {
mTargetZoomValue = index;
mCameraDevice.startSmoothZoom(index);
mZoomState = ZOOM_START;
}
} else {
mZoomValue = index;
setCameraParametersWhenIdle(UPDATE_PARAM_ZOOM);
}
}
@Override
public void startFaceDetection() {
if (mFaceDetectionStarted || mCameraState != IDLE) return;
if (mParameters.getMaxNumDetectedFaces() > 0) {
mFaceDetectionStarted = true;
mFaceView = (FaceView) findViewById(R.id.face_view);
mFaceView.clear();
mFaceView.setVisibility(View.VISIBLE);
mFaceView.setDisplayOrientation(mDisplayOrientation);
CameraInfo info = CameraHolder.instance().getCameraInfo()[mCameraId];
mFaceView.setMirror(info.facing == CameraInfo.CAMERA_FACING_FRONT);
mFaceView.resume();
mCameraDevice.setFaceDetectionListener(this);
mCameraDevice.startFaceDetection();
}
}
@Override
public void stopFaceDetection() {
if (!mFaceDetectionStarted) return;
if (mParameters.getMaxNumDetectedFaces() > 0) {
mFaceDetectionStarted = false;
mCameraDevice.setFaceDetectionListener(null);
mCameraDevice.stopFaceDetection();
if (mFaceView != null) mFaceView.clear();
}
}
private class PopupGestureListener extends GestureDetector.SimpleOnGestureListener {
@Override
public boolean onDown(MotionEvent e) {
// Check if the popup window is visible.
View popup = mIndicatorControlContainer.getActiveSettingPopup();
if (popup == null) return false;
// Let popup window, indicator control or preview frame handle the
// event by themselves. Dismiss the popup window if users touch on
// other areas.
if (!Util.pointInView(e.getX(), e.getY(), popup)
&& !Util.pointInView(e.getX(), e.getY(), mIndicatorControlContainer)
&& !Util.pointInView(e.getX(), e.getY(), mPreviewFrame)) {
mIndicatorControlContainer.dismissSettingPopup();
// Let event fall through.
}
return false;
}
}
@Override
public boolean dispatchTouchEvent(MotionEvent m) {
// Check if the popup window should be dismissed first.
if (mPopupGestureDetector != null && mPopupGestureDetector.onTouchEvent(m)) {
return true;
}
return super.dispatchTouchEvent(m);
}
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
Log.d(TAG, "Received intent action=" + action);
if (action.equals(Intent.ACTION_MEDIA_MOUNTED)
|| action.equals(Intent.ACTION_MEDIA_UNMOUNTED)
|| action.equals(Intent.ACTION_MEDIA_CHECKING)) {
checkStorage();
} else if (action.equals(Intent.ACTION_MEDIA_SCANNER_FINISHED)) {
checkStorage();
if (!mIsImageCaptureIntent) {
updateThumbnailButton();
}
}
}
};
private void initOnScreenIndicator() {
mGpsIndicator = (ImageView) findViewById(R.id.onscreen_gps_indicator);
mExposureIndicator = (TextView) findViewById(R.id.onscreen_exposure_indicator);
mFlashIndicator = (ImageView) findViewById(R.id.onscreen_flash_indicator);
mSceneIndicator = (ImageView) findViewById(R.id.onscreen_scene_indicator);
mWhiteBalanceIndicator =
(ImageView) findViewById(R.id.onscreen_white_balance_indicator);
mFocusIndicator = (ImageView) findViewById(R.id.onscreen_focus_indicator);
}
@Override
public void showGpsOnScreenIndicator(boolean hasSignal) {
if (mGpsIndicator == null) {
return;
}
if (hasSignal) {
mGpsIndicator.setImageResource(R.drawable.ic_viewfinder_gps_on);
} else {
mGpsIndicator.setImageResource(R.drawable.ic_viewfinder_gps_no_signal);
}
mGpsIndicator.setVisibility(View.VISIBLE);
}
@Override
public void hideGpsOnScreenIndicator() {
if (mGpsIndicator == null) {
return;
}
mGpsIndicator.setVisibility(View.GONE);
}
private void updateExposureOnScreenIndicator(int value) {
if (mExposureIndicator == null) {
return;
}
if (value == 0) {
mExposureIndicator.setText("");
mExposureIndicator.setVisibility(View.GONE);
} else {
float step = mParameters.getExposureCompensationStep();
mFormatterArgs[0] = value * step;
mBuilder.delete(0, mBuilder.length());
mFormatter.format("%+1.1f", mFormatterArgs);
String exposure = mFormatter.toString();
mExposureIndicator.setText(exposure);
mExposureIndicator.setVisibility(View.VISIBLE);
}
}
private void updateFlashOnScreenIndicator(String value) {
if (mFlashIndicator == null) {
return;
}
if (Parameters.FLASH_MODE_AUTO.equals(value)) {
mFlashIndicator.setImageResource(R.drawable.ic_indicators_landscape_flash_auto);
mFlashIndicator.setVisibility(View.VISIBLE);
} else if (Parameters.FLASH_MODE_ON.equals(value)) {
mFlashIndicator.setImageResource(R.drawable.ic_indicators_landscape_flash_on);
mFlashIndicator.setVisibility(View.VISIBLE);
} else if (Parameters.FLASH_MODE_OFF.equals(value)) {
mFlashIndicator.setVisibility(View.GONE);
}
}
private void updateSceneOnScreenIndicator(boolean isVisible) {
if (mSceneIndicator == null) {
return;
}
mSceneIndicator.setVisibility(isVisible ? View.VISIBLE : View.GONE);
}
private void updateWhiteBalanceOnScreenIndicator(String value) {
if (mWhiteBalanceIndicator == null) {
return;
}
if (Parameters.WHITE_BALANCE_AUTO.equals(value)) {
mWhiteBalanceIndicator.setVisibility(View.GONE);
} else {
if (Parameters.WHITE_BALANCE_FLUORESCENT.equals(value)) {
mWhiteBalanceIndicator.setImageResource(R.drawable.ic_indicators_fluorescent);
} else if (Parameters.WHITE_BALANCE_INCANDESCENT.equals(value)) {
mWhiteBalanceIndicator.setImageResource(R.drawable.ic_indicators_incandescent);
} else if (Parameters.WHITE_BALANCE_DAYLIGHT.equals(value)) {
mWhiteBalanceIndicator.setImageResource(R.drawable.ic_indicators_sunlight);
} else if (Parameters.WHITE_BALANCE_CLOUDY_DAYLIGHT.equals(value)) {
mWhiteBalanceIndicator.setImageResource(R.drawable.ic_indicators_cloudy);
}
mWhiteBalanceIndicator.setVisibility(View.VISIBLE);
}
}
private void updateFocusOnScreenIndicator(String value) {
if (mFocusIndicator == null) {
return;
}
if (Parameters.FOCUS_MODE_INFINITY.equals(value)) {
mFocusIndicator.setImageResource(R.drawable.ic_indicators_landscape);
mFocusIndicator.setVisibility(View.VISIBLE);
} else if (Parameters.FOCUS_MODE_MACRO.equals(value)) {
mFocusIndicator.setImageResource(R.drawable.ic_indicators_macro);
mFocusIndicator.setVisibility(View.VISIBLE);
} else {
mFocusIndicator.setVisibility(View.GONE);
}
}
private void updateOnScreenIndicators() {
boolean isAutoScene = !(Parameters.SCENE_MODE_AUTO.equals(mParameters.getSceneMode()));
updateSceneOnScreenIndicator(isAutoScene);
updateExposureOnScreenIndicator(CameraSettings.readExposure(mPreferences));
updateFlashOnScreenIndicator(mParameters.getFlashMode());
updateWhiteBalanceOnScreenIndicator(mParameters.getWhiteBalance());
updateFocusOnScreenIndicator(mParameters.getFocusMode());
}
private final class ShutterCallback implements android.hardware.Camera.ShutterCallback {
public void onShutter() {
mShutterCallbackTime = System.currentTimeMillis();
mShutterLag = mShutterCallbackTime - mCaptureStartTime;
Log.v(TAG, "mShutterLag = " + mShutterLag + "ms");
mFocusManager.onShutter();
}
}
private final class PostViewPictureCallback implements PictureCallback {
public void onPictureTaken(
byte [] data, android.hardware.Camera camera) {
mPostViewPictureCallbackTime = System.currentTimeMillis();
Log.v(TAG, "mShutterToPostViewCallbackTime = "
+ (mPostViewPictureCallbackTime - mShutterCallbackTime)
+ "ms");
}
}
private final class RawPictureCallback implements PictureCallback {
public void onPictureTaken(
byte [] rawData, android.hardware.Camera camera) {
mRawPictureCallbackTime = System.currentTimeMillis();
Log.v(TAG, "mShutterToRawCallbackTime = "
+ (mRawPictureCallbackTime - mShutterCallbackTime) + "ms");
}
}
private final class JpegPictureCallback implements PictureCallback {
Location mLocation;
public JpegPictureCallback(Location loc) {
mLocation = loc;
}
public void onPictureTaken(
final byte [] jpegData, final android.hardware.Camera camera) {
if (mPausing) {
return;
}
mJpegPictureCallbackTime = System.currentTimeMillis();
// If postview callback has arrived, the captured image is displayed
// in postview callback. If not, the captured image is displayed in
// raw picture callback.
if (mPostViewPictureCallbackTime != 0) {
mShutterToPictureDisplayedTime =
mPostViewPictureCallbackTime - mShutterCallbackTime;
mPictureDisplayedToJpegCallbackTime =
mJpegPictureCallbackTime - mPostViewPictureCallbackTime;
} else {
mShutterToPictureDisplayedTime =
mRawPictureCallbackTime - mShutterCallbackTime;
mPictureDisplayedToJpegCallbackTime =
mJpegPictureCallbackTime - mRawPictureCallbackTime;
}
Log.v(TAG, "mPictureDisplayedToJpegCallbackTime = "
+ mPictureDisplayedToJpegCallbackTime + "ms");
if (!mIsImageCaptureIntent) {
startPreview();
startFaceDetection();
}
if (!mIsImageCaptureIntent) {
Size s = mParameters.getPictureSize();
mImageSaver.addImage(jpegData, mLocation, s.width, s.height);
} else {
mJpegImageData = jpegData;
if (!mQuickCapture) {
showPostCaptureAlert();
} else {
doAttach();
}
}
// Check this in advance of each shot so we don't add to shutter
// latency. It's true that someone else could write to the SD card in
// the mean time and fill it, but that could have happened between the
// shutter press and saving the JPEG too.
checkStorage();
long now = System.currentTimeMillis();
mJpegCallbackFinishTime = now - mJpegPictureCallbackTime;
Log.v(TAG, "mJpegCallbackFinishTime = "
+ mJpegCallbackFinishTime + "ms");
mJpegPictureCallbackTime = 0;
}
}
private final class AutoFocusCallback implements android.hardware.Camera.AutoFocusCallback {
public void onAutoFocus(
boolean focused, android.hardware.Camera camera) {
if (mPausing) return;
mAutoFocusTime = System.currentTimeMillis() - mFocusStartTime;
Log.v(TAG, "mAutoFocusTime = " + mAutoFocusTime + "ms");
setCameraState(IDLE);
mFocusManager.onAutoFocus(focused);
}
}
private final class ZoomListener implements android.hardware.Camera.OnZoomChangeListener {
@Override
public void onZoomChange(
int value, boolean stopped, android.hardware.Camera camera) {
Log.v(TAG, "Zoom changed: value=" + value + ". stopped=" + stopped);
mZoomValue = value;
// Update the UI when we get zoom value.
mZoomControl.setZoomIndex(value);
// Keep mParameters up to date. We do not getParameter again in
// takePicture. If we do not do this, wrong zoom value will be set.
mParameters.setZoom(value);
if (stopped && mZoomState != ZOOM_STOPPED) {
if (mTargetZoomValue != -1 && value != mTargetZoomValue) {
mCameraDevice.startSmoothZoom(mTargetZoomValue);
mZoomState = ZOOM_START;
} else {
mZoomState = ZOOM_STOPPED;
}
}
}
}
// Each SaveRequest remembers the data needed to save an image.
private static class SaveRequest {
byte[] data;
Location loc;
int width, height;
long dateTaken;
int previewWidth;
}
// We use a queue to store the SaveRequests that have not been completed
// yet. The main thread puts the request into the queue. The saver thread
// gets it from the queue, does the work, and removes it from the queue.
//
// There are several cases the main thread needs to wait for the saver
// thread to finish all the work in the queue:
// (1) When the activity's onPause() is called, we need to finish all the
// work, so other programs (like Gallery) can see all the images.
// (2) When we need to show the SharePop, we need to finish all the work
// too, because we want to show the thumbnail of the last image taken.
//
// If the queue becomes too long, adding a new request will block the main
// thread until the queue length drops below the threshold (QUEUE_LIMIT).
// If we don't do this, we may face several problems: (1) We may OOM
// because we are holding all the jpeg data in memory. (2) We may ANR
// when we need to wait for saver thread finishing all the work (in
// onPause() or showSharePopup()) because the time to finishing a long queue
// of work may be too long.
private class ImageSaver extends Thread {
private static final int QUEUE_LIMIT = 3;
private ArrayList<SaveRequest> mQueue;
private Thumbnail mPendingThumbnail;
private Object mUpdateThumbnailLock = new Object();
private boolean mStop;
// Runs in main thread
public ImageSaver() {
mQueue = new ArrayList<SaveRequest>();
start();
}
// Runs in main thread
public void addImage(final byte[] data, Location loc, int width,
int height) {
SaveRequest r = new SaveRequest();
r.data = data;
r.loc = (loc == null) ? null : new Location(loc); // make a copy
r.width = width;
r.height = height;
r.dateTaken = System.currentTimeMillis();
if (getRequestedOrientation() == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT) {
r.previewWidth = mPreviewFrameLayout.getHeight();
} else {
r.previewWidth = mPreviewFrameLayout.getWidth();
}
synchronized (this) {
while (mQueue.size() >= QUEUE_LIMIT) {
try {
wait();
} catch (InterruptedException ex) {
// ignore.
}
}
mQueue.add(r);
notifyAll(); // Tell saver thread there is new work to do.
}
}
// Runs in saver thread
@Override
public void run() {
while (true) {
SaveRequest r;
synchronized (this) {
if (mQueue.isEmpty()) {
notifyAll(); // notify main thread in waitDone
// Note that we can only stop after we saved all images
// in the queue.
if (mStop) break;
try {
wait();
} catch (InterruptedException ex) {
// ignore.
}
continue;
}
r = mQueue.get(0);
}
storeImage(r.data, r.loc, r.width, r.height, r.dateTaken,
r.previewWidth);
synchronized(this) {
mQueue.remove(0);
notifyAll(); // the main thread may wait in addImage
}
}
}
// Runs in main thread
public void waitDone() {
synchronized (this) {
while (!mQueue.isEmpty()) {
try {
wait();
} catch (InterruptedException ex) {
// ignore.
}
}
}
updateThumbnail();
}
// Runs in main thread
public void finish() {
waitDone();
synchronized (this) {
mStop = true;
notifyAll();
}
try {
join();
} catch (InterruptedException ex) {
// ignore.
}
}
// Runs in main thread (because we need to update mThumbnailView in the
// main thread)
public void updateThumbnail() {
Thumbnail t;
synchronized (mUpdateThumbnailLock) {
mHandler.removeMessages(UPDATE_THUMBNAIL);
t = mPendingThumbnail;
mPendingThumbnail = null;
}
if (t != null) {
mThumbnail = t;
mThumbnailView.setBitmap(mThumbnail.getBitmap());
}
// Share popup may still have the reference to the old thumbnail. Clear it.
mSharePopup = null;
}
// Runs in saver thread
private void storeImage(final byte[] data, Location loc, int width,
int height, long dateTaken, int previewWidth) {
String title = Util.createJpegName(dateTaken);
int orientation = Exif.getOrientation(data);
Uri uri = Storage.addImage(mContentResolver, title, dateTaken,
loc, orientation, data, width, height);
if (uri != null) {
boolean needThumbnail;
synchronized (this) {
// If the number of requests in the queue (include the
// current one) is greater than 1, we don't need to generate
// thumbnail for this image. Because we'll soon replace it
// with the thumbnail for some image later in the queue.
needThumbnail = (mQueue.size() <= 1);
}
if (needThumbnail) {
// Create a thumbnail whose width is equal or bigger than
// that of the preview.
int ratio = (int) Math.ceil((double) width / previewWidth);
int inSampleSize = Integer.highestOneBit(ratio);
Thumbnail t = Thumbnail.createThumbnail(
data, orientation, inSampleSize, uri);
synchronized (mUpdateThumbnailLock) {
// We need to update the thumbnail in the main thread,
// so send a message to run updateThumbnail().
mPendingThumbnail = t;
mHandler.sendEmptyMessage(UPDATE_THUMBNAIL);
}
}
Util.broadcastNewPicture(Camera.this, uri);
}
}
}
private void setCameraState(int state) {
mCameraState = state;
switch (state) {
case SNAPSHOT_IN_PROGRESS:
case FOCUSING:
enableCameraControls(false);
break;
case IDLE:
case PREVIEW_STOPPED:
enableCameraControls(true);
break;
}
}
@Override
public boolean capture() {
// If we are already in the middle of taking a snapshot then ignore.
if (mCameraState == SNAPSHOT_IN_PROGRESS || mCameraDevice == null) {
return false;
}
mCaptureStartTime = System.currentTimeMillis();
mPostViewPictureCallbackTime = 0;
mJpegImageData = null;
// Set rotation and gps data.
Util.setRotationParameter(mParameters, mCameraId, mOrientation);
Location loc = mLocationManager.getCurrentLocation();
Util.setGpsParameters(mParameters, loc);
mCameraDevice.setParameters(mParameters);
mCameraDevice.takePicture(mShutterCallback, mRawPictureCallback,
mPostViewPictureCallback, new JpegPictureCallback(loc));
mFaceDetectionStarted = false;
setCameraState(SNAPSHOT_IN_PROGRESS);
return true;
}
@Override
public void setFocusParameters() {
setCameraParameters(UPDATE_PARAM_PREFERENCE);
}
@Override
public void playSound(int soundId) {
mCameraSound.play(soundId);
}
private boolean saveDataToFile(String filePath, byte[] data) {
FileOutputStream f = null;
try {
f = new FileOutputStream(filePath);
f.write(data);
} catch (IOException e) {
return false;
} finally {
Util.closeSilently(f);
}
return true;
}
private void getPreferredCameraId() {
mPreferences = new ComboPreferences(this);
CameraSettings.upgradeGlobalPreferences(mPreferences.getGlobal());
mNumberOfCameras = CameraHolder.instance().getNumberOfCameras();
int attemptedCameraId = CameraSettings.readPreferredCameraId(mPreferences);
// It is possible that the user can connect/disconnect cameras
// between device boots.
// We need to check that the preferred camera ID
// does not refer to a disconnected camera.
if (attemptedCameraId >= mNumberOfCameras) {
Log.v(TAG, "Preferred camera (id= " + attemptedCameraId +
") missing. Defaulting to the first one");
mCameraId = 0;
} else {
mCameraId = attemptedCameraId;
}
// Testing purpose. Launch a specific camera through the intent extras.
int intentCameraId = Util.getCameraFacingIntentExtras(this);
if (intentCameraId != -1) {
mCameraId = intentCameraId;
}
}
Thread mCameraOpenThread = new Thread(new Runnable() {
public void run() {
try {
mCameraDevice = Util.openCamera(Camera.this, mCameraId);
} catch (CameraHardwareException e) {
mOpenCameraFail = true;
} catch (CameraDisabledException e) {
mCameraDisabled = true;
}
}
});
Thread mCameraPreviewThread = new Thread(new Runnable() {
public void run() {
initializeCapabilities();
startPreview();
}
});
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
getPreferredCameraId();
String[] defaultFocusModes = getResources().getStringArray(
R.array.pref_camera_focusmode_default_array);
mFocusManager = new FocusManager(mPreferences, defaultFocusModes);
/* * To reduce startup time, we start the camera open and preview threads. * We make sure the preview is started at the end of onCreate. */
mCameraOpenThread.start();
mIsImageCaptureIntent = isImageCaptureIntent();
setContentView(R.layout.camera);
if (mIsImageCaptureIntent) {
mReviewDoneButton = (Rotatable) findViewById(R.id.btn_done);
mReviewCancelButton = (Rotatable) findViewById(R.id.btn_cancel);
findViewById(R.id.btn_cancel).setVisibility(View.VISIBLE);
} else {
mThumbnailView = (RotateImageView) findViewById(R.id.thumbnail);
mThumbnailView.enableFilter(false);
mThumbnailView.setVisibility(View.VISIBLE);
}
mRotateDialog = new RotateDialogController(this, R.layout.rotate_dialog);
mPreferences.setLocalId(this, mCameraId);
CameraSettings.upgradeLocalPreferences(mPreferences.getLocal());
mQuickCapture = getIntent().getBooleanExtra(EXTRA_QUICK_CAPTURE, false);
// we need to reset exposure for the preview
resetExposureCompensation();
Util.enterLightsOutMode(getWindow());
// don't set mSurfaceHolder here. We have it set ONLY within
// surfaceChanged / surfaceDestroyed, other parts of the code
// assume that when it is set, the surface is also set.
SurfaceView preview = (SurfaceView) findViewById(R.id.camera_preview);
SurfaceHolder holder = preview.getHolder();
holder.addCallback(this);
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
// Make sure camera device is opened.
try {
mCameraOpenThread.join();
mCameraOpenThread = null;
if (mOpenCameraFail) {
Util.showErrorAndFinish(this, R.string.cannot_connect_camera);
return;
} else if (mCameraDisabled) {
Util.showErrorAndFinish(this, R.string.camera_disabled);
return;
}
} catch (InterruptedException ex) {
// ignore
}
mCameraPreviewThread.start();
if (mIsImageCaptureIntent) {
setupCaptureParams();
} else {
mModePicker = (ModePicker) findViewById(R.id.mode_picker);
mModePicker.setVisibility(View.VISIBLE);
mModePicker.setOnModeChangeListener(this);
mModePicker.setCurrentMode(ModePicker.MODE_CAMERA);
}
mZoomControl = (ZoomControl) findViewById(R.id.zoom_control);
mOnScreenIndicators = (Rotatable) findViewById(R.id.on_screen_indicators);
mLocationManager = new LocationManager(this, this);
mBackCameraId = CameraHolder.instance().getBackCameraId();
mFrontCameraId = CameraHolder.instance().getFrontCameraId();
// Wait until the camera settings are retrieved.
synchronized (mCameraPreviewThread) {
try {
mCameraPreviewThread.wait();
} catch (InterruptedException ex) {
// ignore
}
}
// Do this after starting preview because it depends on camera
// parameters.
initializeIndicatorControl();
mCameraSound = new MediaActionSound();
// Make sure preview is started.
try {
mCameraPreviewThread.join();
} catch (InterruptedException ex) {
// ignore
}
mCameraPreviewThread = null;
}
private void overrideCameraSettings(final String flashMode,
final String whiteBalance, final String focusMode) {
if (mIndicatorControlContainer != null) {
mIndicatorControlContainer.overrideSettings(
CameraSettings.KEY_FLASH_MODE, flashMode,
CameraSettings.KEY_WHITE_BALANCE, whiteBalance,
CameraSettings.KEY_FOCUS_MODE, focusMode);
}
}
private void updateSceneModeUI() {
// If scene mode is set, we cannot set flash mode, white balance, and
// focus mode, instead, we read it from driver
if (!Parameters.SCENE_MODE_AUTO.equals(mSceneMode)) {
overrideCameraSettings(mParameters.getFlashMode(),
mParameters.getWhiteBalance(), mParameters.getFocusMode());
} else {
overrideCameraSettings(null, null, null);
}
}
private void loadCameraPreferences() {
CameraSettings settings = new CameraSettings(this, mInitialParams,
mCameraId, CameraHolder.instance().getCameraInfo());
mPreferenceGroup = settings.getPreferenceGroup(R.xml.camera_preferences);
}
private void initializeIndicatorControl() {
// setting the indicator buttons.
mIndicatorControlContainer =
(IndicatorControlContainer) findViewById(R.id.indicator_control);
if (mIndicatorControlContainer == null) return;
loadCameraPreferences();
final String[] SETTING_KEYS = {
CameraSettings.KEY_FLASH_MODE,
CameraSettings.KEY_WHITE_BALANCE,
CameraSettings.KEY_EXPOSURE,
CameraSettings.KEY_SCENE_MODE};
final String[] OTHER_SETTING_KEYS = {
CameraSettings.KEY_RECORD_LOCATION,
CameraSettings.KEY_PICTURE_SIZE,
CameraSettings.KEY_FOCUS_MODE};
CameraPicker.setImageResourceId(R.drawable.ic_switch_photo_facing_holo_light);
mIndicatorControlContainer.initialize(this, mPreferenceGroup,
mParameters.isZoomSupported(),
SETTING_KEYS, OTHER_SETTING_KEYS);
updateSceneModeUI();
mIndicatorControlContainer.setListener(this);
}
private boolean collapseCameraControls() {
if ((mIndicatorControlContainer != null)
&& mIndicatorControlContainer.dismissSettingPopup()) {
return true;
}
return false;
}
private void enableCameraControls(boolean enable) {
if (mIndicatorControlContainer != null) {
mIndicatorControlContainer.setEnabled(enable);
}
if (mModePicker != null) mModePicker.setEnabled(enable);
if (mZoomControl != null) mZoomControl.setEnabled(enable);
if (mThumbnailView != null) mThumbnailView.setEnabled(enable);
}
private class MyOrientationEventListener extends OrientationEventListener {
public MyOrientationEventListener(Context context) {
super(context);
}
@Override
public void onOrientationChanged(int orientation) {
// We keep the last known orientation. So if the user first orient
// the camera then point the camera to floor or sky, we still have
// the correct orientation.
if (orientation == ORIENTATION_UNKNOWN) return;
mOrientation = Util.roundOrientation(orientation, mOrientation);
// When the screen is unlocked, display rotation may change. Always
// calculate the up-to-date orientationCompensation.
int orientationCompensation = mOrientation
+ Util.getDisplayRotation(Camera.this);
if (mOrientationCompensation != orientationCompensation) {
mOrientationCompensation = orientationCompensation;
setOrientationIndicator(mOrientationCompensation);
}
// Show the toast after getting the first orientation changed.
if (mHandler.hasMessages(SHOW_TAP_TO_FOCUS_TOAST)) {
mHandler.removeMessages(SHOW_TAP_TO_FOCUS_TOAST);
showTapToFocusToast();
}
}
}
private void setOrientationIndicator(int orientation) {
Rotatable[] indicators = {mThumbnailView, mModePicker, mSharePopup,
mIndicatorControlContainer, mZoomControl, mFocusAreaIndicator, mFaceView,
mReviewCancelButton, mReviewDoneButton, mRotateDialog, mOnScreenIndicators};
for (Rotatable indicator : indicators) {
if (indicator != null) indicator.setOrientation(orientation);
}
}
@Override
public void onStop() {
super.onStop();
if (mMediaProviderClient != null) {
mMediaProviderClient.release();
mMediaProviderClient = null;
}
}
private void checkStorage() {
mPicturesRemaining = Storage.getAvailableSpace();
if (mPicturesRemaining > Storage.LOW_STORAGE_THRESHOLD) {
mPicturesRemaining = (mPicturesRemaining - Storage.LOW_STORAGE_THRESHOLD)
/ Storage.PICTURE_SIZE;
} else if (mPicturesRemaining > 0) {
mPicturesRemaining = 0;
}
updateStorageHint();
}
@OnClickAttr
public void onThumbnailClicked(View v) {
if (isCameraIdle() && mThumbnail != null) {
showSharePopup();
}
}
@OnClickAttr
public void onReviewRetakeClicked(View v) {
hidePostCaptureAlert();
startPreview();
startFaceDetection();
}
@OnClickAttr
public void onReviewDoneClicked(View v) {
doAttach();
}
@OnClickAttr
public void onReviewCancelClicked(View v) {
doCancel();
}
private void doAttach() {
if (mPausing) {
return;
}
byte[] data = mJpegImageData;
if (mCropValue == null) {
// First handle the no crop case -- just return the value. If the
// caller specifies a "save uri" then write the data to it's
// stream. Otherwise, pass back a scaled down version of the bitmap
// directly in the extras.
if (mSaveUri != null) {
OutputStream outputStream = null;
try {
outputStream = mContentResolver.openOutputStream(mSaveUri);
outputStream.write(data);
outputStream.close();
setResultEx(RESULT_OK);
finish();
} catch (IOException ex) {
// ignore exception
} finally {
Util.closeSilently(outputStream);
}
} else {
int orientation = Exif.getOrientation(data);
Bitmap bitmap = Util.makeBitmap(data, 50 * 1024);
bitmap = Util.rotate(bitmap, orientation);
setResultEx(RESULT_OK,
new Intent("inline-data").putExtra("data", bitmap));
finish();
}
} else {
// Save the image to a temp file and invoke the cropper
Uri tempUri = null;
FileOutputStream tempStream = null;
try {
File path = getFileStreamPath(sTempCropFilename);
path.delete();
tempStream = openFileOutput(sTempCropFilename, 0);
tempStream.write(data);
tempStream.close();
tempUri = Uri.fromFile(path);
} catch (FileNotFoundException ex) {
setResultEx(Activity.RESULT_CANCELED);
finish();
return;
} catch (IOException ex) {
setResultEx(Activity.RESULT_CANCELED);
finish();
return;
} finally {
Util.closeSilently(tempStream);
}
Bundle newExtras = new Bundle();
if (mCropValue.equals("circle")) {
newExtras.putString("circleCrop", "true");
}
if (mSaveUri != null) {
newExtras.putParcelable(MediaStore.EXTRA_OUTPUT, mSaveUri);
} else {
newExtras.putBoolean("return-data", true);
}
Intent cropIntent = new Intent("com.android.camera.action.CROP");
cropIntent.setData(tempUri);
cropIntent.putExtras(newExtras);
startActivityForResult(cropIntent, CROP_MSG);
}
}
private void doCancel() {
setResultEx(RESULT_CANCELED, new Intent());
finish();
}
@Override
public void onShutterButtonFocus(boolean pressed) {
if (mPausing || collapseCameraControls() || mCameraState == SNAPSHOT_IN_PROGRESS) return;
// Do not do focus if there is not enough storage.
if (pressed && !canTakePicture()) return;
if (pressed) {
mFocusManager.onShutterDown();
} else {
mFocusManager.onShutterUp();
}
}
@Override
public void onShutterButtonClick() {
if (mPausing || collapseCameraControls()) return;
// Do not take the picture if there is not enough storage.
if (mPicturesRemaining <= 0) {
Log.i(TAG, "Not enough space or storage not ready. remaining=" + mPicturesRemaining);
return;
}
Log.v(TAG, "onShutterButtonClick: mCameraState=" + mCameraState);
// If the user wants to do a snapshot while the previous one is still
// in progress, remember the fact and do it after we finish the previous
// one and re-start the preview. Snapshot in progress also includes the
// state that autofocus is focusing and a picture will be taken when
// focus callback arrives.
if (mFocusManager.isFocusingSnapOnFinish() || mCameraState == SNAPSHOT_IN_PROGRESS) {
mSnapshotOnIdle = true;
return;
}
mSnapshotOnIdle = false;
mFocusManager.doSnap();
}
private OnScreenHint mStorageHint;
private void updateStorageHint() {
String noStorageText = null;
if (mPicturesRemaining == Storage.UNAVAILABLE) {
noStorageText = getString(R.string.no_storage);
} else if (mPicturesRemaining == Storage.PREPARING) {
noStorageText = getString(R.string.preparing_sd);
} else if (mPicturesRemaining == Storage.UNKNOWN_SIZE) {
noStorageText = getString(R.string.access_sd_fail);
} else if (mPicturesRemaining < 1L) {
noStorageText = getString(R.string.not_enough_space);
}
if (noStorageText != null) {
if (mStorageHint == null) {
mStorageHint = OnScreenHint.makeText(this, noStorageText);
} else {
mStorageHint.setText(noStorageText);
}
mStorageHint.show();
} else if (mStorageHint != null) {
mStorageHint.cancel();
mStorageHint = null;
}
}
private void installIntentFilter() {
// install an intent filter to receive SD card related events.
IntentFilter intentFilter =
new IntentFilter(Intent.ACTION_MEDIA_MOUNTED);
intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
intentFilter.addAction(Intent.ACTION_MEDIA_CHECKING);
intentFilter.addDataScheme("file");
registerReceiver(mReceiver, intentFilter);
mDidRegister = true;
}
@Override
protected void doOnResume() {
if (mOpenCameraFail || mCameraDisabled) return;
mPausing = false;
mJpegPictureCallbackTime = 0;
mZoomValue = 0;
// Start the preview if it is not started.
if (mCameraState == PREVIEW_STOPPED) {
try {
mCameraDevice = Util.openCamera(this, mCameraId);
initializeCapabilities();
resetExposureCompensation();
startPreview();
startFaceDetection();
} catch (CameraHardwareException e) {
Util.showErrorAndFinish(this, R.string.cannot_connect_camera);
return;
} catch (CameraDisabledException e) {
Util.showErrorAndFinish(this, R.string.camera_disabled);
return;
}
}
if (mSurfaceHolder != null) {
// If first time initialization is not finished, put it in the
// message queue.
if (!mFirstTimeInitialized) {
mHandler.sendEmptyMessage(FIRST_TIME_INIT);
} else {
initializeSecondTime();
}
}
keepScreenOnAwhile();
if (mCameraState == IDLE) {
mOnResumeTime = SystemClock.uptimeMillis();
mHandler.sendEmptyMessageDelayed(CHECK_DISPLAY_ROTATION, 100);
}
// Dismiss open menu if exists.
PopupManager.getInstance(this).notifyShowPopup(null);
}
@Override
protected void onPause() {
mPausing = true;
stopPreview();
// Close the camera now because other activities may need to use it.
closeCamera();
if (mCameraSound != null) mCameraSound.release();
resetScreenOn();
// Clear UI.
collapseCameraControls();
if (mSharePopup != null) mSharePopup.dismiss();
if (mFaceView != null) mFaceView.clear();
if (mFirstTimeInitialized) {
mOrientationListener.disable();
if (mImageSaver != null) {
mImageSaver.finish();
mImageSaver = null;
}
if (!mIsImageCaptureIntent && mThumbnail != null && !mThumbnail.fromFile()) {
mThumbnail.saveTo(new File(getFilesDir(), Thumbnail.LAST_THUMB_FILENAME));
}
}
if (mDidRegister) {
unregisterReceiver(mReceiver);
mDidRegister = false;
}
if (mLocationManager != null) mLocationManager.recordLocation(false);
updateExposureOnScreenIndicator(0);
if (mStorageHint != null) {
mStorageHint.cancel();
mStorageHint = null;
}
// If we are in an image capture intent and has taken
// a picture, we just clear it in onPause.
mJpegImageData = null;
// Remove the messages in the event queue.
mHandler.removeMessages(FIRST_TIME_INIT);
mHandler.removeMessages(CHECK_DISPLAY_ROTATION);
mFocusManager.removeMessages();
super.onPause();
}
@Override
protected void onActivityResult(
int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case CROP_MSG: {
Intent intent = new Intent();
if (data != null) {
Bundle extras = data.getExtras();
if (extras != null) {
intent.putExtras(extras);
}
}
setResultEx(resultCode, intent);
finish();
File path = getFileStreamPath(sTempCropFilename);
path.delete();
break;
}
}
}
private boolean canTakePicture() {
return isCameraIdle() && (mPicturesRemaining > 0);
}
@Override
public void autoFocus() {
mFocusStartTime = System.currentTimeMillis();
mCameraDevice.autoFocus(mAutoFocusCallback);
setCameraState(FOCUSING);
}
@Override
public void cancelAutoFocus() {
mCameraDevice.cancelAutoFocus();
setCameraState(IDLE);
setCameraParameters(UPDATE_PARAM_PREFERENCE);
}
// Preview area is touched. Handle touch focus.
@Override
public boolean onTouch(View v, MotionEvent e) {
if (mPausing || mCameraDevice == null || !mFirstTimeInitialized
|| mCameraState == SNAPSHOT_IN_PROGRESS) {
return false;
}
// Do not trigger touch focus if popup window is opened.
if (collapseCameraControls()) return false;
// Check if metering area or focus area is supported.
if (!mFocusAreaSupported && !mMeteringAreaSupported) return false;
return mFocusManager.onTouch(e);
}
@Override
public void onBackPressed() {
if (!isCameraIdle()) {
// ignore backs while we're taking a picture
return;
} else if (!collapseCameraControls()) {
super.onBackPressed();
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_FOCUS:
if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
onShutterButtonFocus(true);
}
return true;
case KeyEvent.KEYCODE_CAMERA:
if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
onShutterButtonClick();
}
return true;
case KeyEvent.KEYCODE_DPAD_CENTER:
// If we get a dpad center event without any focused view, move
// the focus to the shutter button and press it.
if (mFirstTimeInitialized && event.getRepeatCount() == 0) {
// Start auto-focus immediately to reduce shutter lag. After
// the shutter button gets the focus, onShutterButtonFocus()
// will be called again but it is fine.
if (collapseCameraControls()) return true;
onShutterButtonFocus(true);
if (mShutterButton.isInTouchMode()) {
mShutterButton.requestFocusFromTouch();
} else {
mShutterButton.requestFocus();
}
mShutterButton.setPressed(true);
}
return true;
}
return super.onKeyDown(keyCode, event);
}
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_FOCUS:
if (mFirstTimeInitialized) {
onShutterButtonFocus(false);
}
return true;
}
return super.onKeyUp(keyCode, event);
}
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
// Make sure we have a surface in the holder before proceeding.
if (holder.getSurface() == null) {
Log.d(TAG, "holder.getSurface() == null");
return;
}
Log.v(TAG, "surfaceChanged. w=" + w + ". h=" + h);
// We need to save the holder for later use, even when the mCameraDevice
// is null. This could happen if onResume() is invoked after this
// function.
mSurfaceHolder = holder;
// The mCameraDevice will be null if it fails to connect to the camera
// hardware. In this case we will show a dialog and then finish the
// activity, so it's OK to ignore it.
if (mCameraDevice == null) return;
// Sometimes surfaceChanged is called after onPause or before onResume.
// Ignore it.
if (mPausing || isFinishing()) return;
// Set preview display if the surface is being created. Preview was
// already started. Also restart the preview if display rotation has
// changed. Sometimes this happens when the device is held in portrait
// and camera app is opened. Rotation animation takes some time and
// display rotation in onCreate may not be what we want.
if (mCameraState == PREVIEW_STOPPED) {
startPreview();
startFaceDetection();
} else {
if (Util.getDisplayRotation(this) != mDisplayRotation) {
setDisplayOrientation();
}
if (holder.isCreating()) {
// Set preview display if the surface is being created and preview
// was already started. That means preview display was set to null
// and we need to set it now.
setPreviewDisplay(holder);
}
}
// If first time initialization is not finished, send a message to do
// it later. We want to finish surfaceChanged as soon as possible to let
// user see preview first.
if (!mFirstTimeInitialized) {
mHandler.sendEmptyMessage(FIRST_TIME_INIT);
} else {
initializeSecondTime();
}
}
public void surfaceCreated(SurfaceHolder holder) {
}
public void surfaceDestroyed(SurfaceHolder holder) {
stopPreview();
mSurfaceHolder = null;
}
private void closeCamera() {
if (mCameraDevice != null) {
CameraHolder.instance().release();
mFaceDetectionStarted = false;
mCameraDevice.setZoomChangeListener(null);
mCameraDevice.setFaceDetectionListener(null);
mCameraDevice.setErrorCallback(null);
mCameraDevice = null;
setCameraState(PREVIEW_STOPPED);
mFocusManager.onCameraReleased();
}
}
private void setPreviewDisplay(SurfaceHolder holder) {
try {
mCameraDevice.setPreviewDisplay(holder);
} catch (Throwable ex) {
closeCamera();
throw new RuntimeException("setPreviewDisplay failed", ex);
}
}
private void setDisplayOrientation() {
mDisplayRotation = Util.getDisplayRotation(this);
mDisplayOrientation = Util.getDisplayOrientation(mDisplayRotation, mCameraId);
mCameraDevice.setDisplayOrientation(mDisplayOrientation);
if (mFaceView != null) {
mFaceView.setDisplayOrientation(mDisplayOrientation);
}
}
private void startPreview() {
if (mPausing || isFinishing()) return;
mFocusManager.resetTouchFocus();
mCameraDevice.setErrorCallback(mErrorCallback);
// If we're previewing already, stop the preview first (this will blank
// the screen).
if (mCameraState != PREVIEW_STOPPED) stopPreview();
setPreviewDisplay(mSurfaceHolder);
setDisplayOrientation();
if (!mSnapshotOnIdle) {
// If the focus mode is continuous autofocus, call cancelAutoFocus to
// resume it because it may have been paused by autoFocus call.
if (Parameters.FOCUS_MODE_CONTINUOUS_PICTURE.equals(mFocusManager.getFocusMode())) {
mCameraDevice.cancelAutoFocus();
}
mFocusManager.setAeAwbLock(false); // Unlock AE and AWB.
}
setCameraParameters(UPDATE_PARAM_ALL);
// Inform the mainthread to go on the UI initialization.
if (mCameraPreviewThread != null) {
synchronized (mCameraPreviewThread) {
mCameraPreviewThread.notify();
}
}
try {
Log.v(TAG, "startPreview");
mCameraDevice.startPreview();
} catch (Throwable ex) {
closeCamera();
throw new RuntimeException("startPreview failed", ex);
}
mZoomState = ZOOM_STOPPED;
setCameraState(IDLE);
mFocusManager.onPreviewStarted();
if (mSnapshotOnIdle) {
mHandler.post(mDoSnapRunnable);
}
}
private void stopPreview() {
if (mCameraDevice != null && mCameraState != PREVIEW_STOPPED) {
Log.v(TAG, "stopPreview");
mCameraDevice.cancelAutoFocus(); // Reset the focus.
mCameraDevice.stopPreview();
mFaceDetectionStarted = false;
}
setCameraState(PREVIEW_STOPPED);
mFocusManager.onPreviewStopped();
}
private static boolean isSupported(String value, List<String> supported) {
return supported == null ? false : supported.indexOf(value) >= 0;
}
private void updateCameraParametersInitialize() {
// Reset preview frame rate to the maximum because it may be lowered by
// video camera application.
List<Integer> frameRates = mParameters.getSupportedPreviewFrameRates();
if (frameRates != null) {
Integer max = Collections.max(frameRates);
mParameters.setPreviewFrameRate(max);
}
mParameters.setRecordingHint(false);
// Disable video stabilization. Convenience methods not available in API
// level <= 14
String vstabSupported = mParameters.get("video-stabilization-supported");
if ("true".equals(vstabSupported)) {
mParameters.set("video-stabilization", "false");
}
}
private void updateCameraParametersZoom() {
// Set zoom.
if (mParameters.isZoomSupported()) {
mParameters.setZoom(mZoomValue);
}
}
private void updateCameraParametersPreference() {
if (mAeLockSupported) {
mParameters.setAutoExposureLock(mFocusManager.getAeAwbLock());
}
if (mAwbLockSupported) {
mParameters.setAutoWhiteBalanceLock(mFocusManager.getAeAwbLock());
}
if (mFocusAreaSupported) {
mParameters.setFocusAreas(mFocusManager.getFocusAreas());
}
if (mMeteringAreaSupported) {
// Use the same area for focus and metering.
mParameters.setMeteringAreas(mFocusManager.getMeteringAreas());
}
// Set picture size.
String pictureSize = mPreferences.getString(
CameraSettings.KEY_PICTURE_SIZE, null);
if (pictureSize == null) {
CameraSettings.initialCameraPictureSize(this, mParameters);
} else {
List<Size> supported = mParameters.getSupportedPictureSizes();
CameraSettings.setCameraPictureSize(
pictureSize, supported, mParameters);
}
// Set the preview frame aspect ratio according to the picture size.
Size size = mParameters.getPictureSize();
mPreviewPanel = findViewById(R.id.frame_layout);
mPreviewFrameLayout = (PreviewFrameLayout) findViewById(R.id.frame);
mPreviewFrameLayout.setAspectRatio((double) size.width / size.height);
// Set a preview size that is closest to the viewfinder height and has
// the right aspect ratio.
List<Size> sizes = mParameters.getSupportedPreviewSizes();
Size optimalSize = Util.getOptimalPreviewSize(this,
sizes, (double) size.width / size.height);
Size original = mParameters.getPreviewSize();
if (!original.equals(optimalSize)) {
mParameters.setPreviewSize(optimalSize.width, optimalSize.height);
// Zoom related settings will be changed for different preview
// sizes, so set and read the parameters to get lastest values
mCameraDevice.setParameters(mParameters);
mParameters = mCameraDevice.getParameters();
}
Log.v(TAG, "Preview size is " + optimalSize.width + "x" + optimalSize.height);
// Since change scene mode may change supported values,
// Set scene mode first,
mSceneMode = mPreferences.getString(
CameraSettings.KEY_SCENE_MODE,
getString(R.string.pref_camera_scenemode_default));
if (isSupported(mSceneMode, mParameters.getSupportedSceneModes())) {
if (!mParameters.getSceneMode().equals(mSceneMode)) {
mParameters.setSceneMode(mSceneMode);
mCameraDevice.setParameters(mParameters);
// Setting scene mode will change the settings of flash mode,
// white balance, and focus mode. Here we read back the
// parameters, so we can know those settings.
mParameters = mCameraDevice.getParameters();
}
} else {
mSceneMode = mParameters.getSceneMode();
if (mSceneMode == null) {
mSceneMode = Parameters.SCENE_MODE_AUTO;
}
}
// Set JPEG quality.
int jpegQuality = CameraProfile.getJpegEncodingQualityParameter(mCameraId,
CameraProfile.QUALITY_HIGH);
mParameters.setJpegQuality(jpegQuality);
// For the following settings, we need to check if the settings are
// still supported by latest driver, if not, ignore the settings.
// Set exposure compensation
int value = CameraSettings.readExposure(mPreferences);
int max = mParameters.getMaxExposureCompensation();
int min = mParameters.getMinExposureCompensation();
if (value >= min && value <= max) {
mParameters.setExposureCompensation(value);
} else {
Log.w(TAG, "invalid exposure range: " + value);
}
if (Parameters.SCENE_MODE_AUTO.equals(mSceneMode)) {
// Set flash mode.
String flashMode = mPreferences.getString(
CameraSettings.KEY_FLASH_MODE,
getString(R.string.pref_camera_flashmode_default));
List<String> supportedFlash = mParameters.getSupportedFlashModes();
if (isSupported(flashMode, supportedFlash)) {
mParameters.setFlashMode(flashMode);
} else {
flashMode = mParameters.getFlashMode();
if (flashMode == null) {
flashMode = getString(
R.string.pref_camera_flashmode_no_flash);
}
}
// Set white balance parameter.
String whiteBalance = mPreferences.getString(
CameraSettings.KEY_WHITE_BALANCE,
getString(R.string.pref_camera_whitebalance_default));
if (isSupported(whiteBalance,
mParameters.getSupportedWhiteBalance())) {
mParameters.setWhiteBalance(whiteBalance);
} else {
whiteBalance = mParameters.getWhiteBalance();
if (whiteBalance == null) {
whiteBalance = Parameters.WHITE_BALANCE_AUTO;
}
}
// Set focus mode.
mFocusManager.overrideFocusMode(null);
mParameters.setFocusMode(mFocusManager.getFocusMode());
} else {
mFocusManager.overrideFocusMode(mParameters.getFocusMode());
}
}
// We separate the parameters into several subsets, so we can update only
// the subsets actually need updating. The PREFERENCE set needs extra
// locking because the preference can be changed from GLThread as well.
private void setCameraParameters(int updateSet) {
mParameters = mCameraDevice.getParameters();
if ((updateSet & UPDATE_PARAM_INITIALIZE) != 0) {
updateCameraParametersInitialize();
}
if ((updateSet & UPDATE_PARAM_ZOOM) != 0) {
updateCameraParametersZoom();
}
if ((updateSet & UPDATE_PARAM_PREFERENCE) != 0) {
updateCameraParametersPreference();
}
mCameraDevice.setParameters(mParameters);
}
// If the Camera is idle, update the parameters immediately, otherwise
// accumulate them in mUpdateSet and update later.
private void setCameraParametersWhenIdle(int additionalUpdateSet) {
mUpdateSet |= additionalUpdateSet;
if (mCameraDevice == null) {
// We will update all the parameters when we open the device, so
// we don't need to do anything now.
mUpdateSet = 0;
return;
} else if (isCameraIdle()) {
setCameraParameters(mUpdateSet);
updateSceneModeUI();
mUpdateSet = 0;
} else {
if (!mHandler.hasMessages(SET_CAMERA_PARAMETERS_WHEN_IDLE)) {
mHandler.sendEmptyMessageDelayed(
SET_CAMERA_PARAMETERS_WHEN_IDLE, 1000);
}
}
}
private void gotoGallery() {
MenuHelper.gotoCameraImageGallery(this);
}
private boolean isCameraIdle() {
return (mCameraState == IDLE) || (mFocusManager.isFocusCompleted());
}
private boolean isImageCaptureIntent() {
String action = getIntent().getAction();
return (MediaStore.ACTION_IMAGE_CAPTURE.equals(action));
}
private void setupCaptureParams() {
Bundle myExtras = getIntent().getExtras();
if (myExtras != null) {
mSaveUri = (Uri) myExtras.getParcelable(MediaStore.EXTRA_OUTPUT);
mCropValue = myExtras.getString("crop");
}
}
private void showPostCaptureAlert() {
if (mIsImageCaptureIntent) {
Util.fadeOut(mIndicatorControlContainer);
Util.fadeOut(mShutterButton);
int[] pickIds = {R.id.btn_retake, R.id.btn_done};
for (int id : pickIds) {
Util.fadeIn(findViewById(id));
}
}
}
private void hidePostCaptureAlert() {
if (mIsImageCaptureIntent) {
int[] pickIds = {R.id.btn_retake, R.id.btn_done};
for (int id : pickIds) {
Util.fadeOut(findViewById(id));
}
Util.fadeIn(mShutterButton);
Util.fadeIn(mIndicatorControlContainer);
}
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
super.onPrepareOptionsMenu(menu);
// Only show the menu when camera is idle.
for (int i = 0; i < menu.size(); i++) {
menu.getItem(i).setVisible(isCameraIdle());
}
return true;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
if (mIsImageCaptureIntent) {
// No options menu for attach mode.
return false;
} else {
addBaseMenuItems(menu);
}
return true;
}
private void addBaseMenuItems(Menu menu) {
MenuHelper.addSwitchModeMenuItem(menu, ModePicker.MODE_VIDEO, new Runnable() {
public void run() {
switchToOtherMode(ModePicker.MODE_VIDEO);
}
});
MenuHelper.addSwitchModeMenuItem(menu, ModePicker.MODE_PANORAMA, new Runnable() {
public void run() {
switchToOtherMode(ModePicker.MODE_PANORAMA);
}
});
if (mNumberOfCameras > 1) {
menu.add(R.string.switch_camera_id)
.setOnMenuItemClickListener(new OnMenuItemClickListener() {
public boolean onMenuItemClick(MenuItem item) {
CameraSettings.writePreferredCameraId(mPreferences,
(mCameraId + 1) % mNumberOfCameras);
onSharedPreferenceChanged();
return true;
}
}).setIcon(android.R.drawable.ic_menu_camera);
}
}
private boolean switchToOtherMode(int mode) {
if (isFinishing()) return false;
if (mImageSaver != null) mImageSaver.waitDone();
MenuHelper.gotoMode(mode, Camera.this);
mHandler.removeMessages(FIRST_TIME_INIT);
finish();
return true;
}
public boolean onModeChanged(int mode) {
if (mode != ModePicker.MODE_CAMERA) {
return switchToOtherMode(mode);
} else {
return true;
}
}
public void onSharedPreferenceChanged() {
// ignore the events after "onPause()"
if (mPausing) return;
boolean recordLocation = RecordLocationPreference.get(
mPreferences, getContentResolver());
mLocationManager.recordLocation(recordLocation);
int cameraId = CameraSettings.readPreferredCameraId(mPreferences);
if (mCameraId != cameraId) {
// Restart the activity to have a crossfade animation.
// TODO: Use SurfaceTexture to implement a better and faster
// animation.
if (mIsImageCaptureIntent) {
// If the intent is camera capture, stay in camera capture mode.
MenuHelper.gotoCameraMode(this, getIntent());
} else {
MenuHelper.gotoCameraMode(this);
}
finish();
} else {
setCameraParametersWhenIdle(UPDATE_PARAM_PREFERENCE);
}
updateOnScreenIndicators();
}
@Override
public void onUserInteraction() {
super.onUserInteraction();
keepScreenOnAwhile();
}
private void resetScreenOn() {
mHandler.removeMessages(CLEAR_SCREEN_DELAY);
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
}
private void keepScreenOnAwhile() {
mHandler.removeMessages(CLEAR_SCREEN_DELAY);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
mHandler.sendEmptyMessageDelayed(CLEAR_SCREEN_DELAY, SCREEN_DELAY);
}
public void onRestorePreferencesClicked() {
if (mPausing) return;
Runnable runnable = new Runnable() {
public void run() {
restorePreferences();
}
};
mRotateDialog.showAlertDialog(
getString(R.string.confirm_restore_title),
getString(R.string.confirm_restore_message),
getString(android.R.string.ok), runnable,
getString(android.R.string.cancel), null);
}
private void restorePreferences() {
// Reset the zoom. Zoom value is not stored in preference.
if (mParameters.isZoomSupported()) {
mZoomValue = 0;
setCameraParametersWhenIdle(UPDATE_PARAM_ZOOM);
mZoomControl.setZoomIndex(0);
}
if (mIndicatorControlContainer != null) {
mIndicatorControlContainer.dismissSettingPopup();
CameraSettings.restorePreferences(Camera.this, mPreferences,
mParameters);
mIndicatorControlContainer.reloadPreferences();
onSharedPreferenceChanged();
}
}
public void onOverriddenPreferencesClicked() {
if (mPausing) return;
if (mNotSelectableToast == null) {
String str = getResources().getString(R.string.not_selectable_in_scene_mode);
mNotSelectableToast = Toast.makeText(Camera.this, str, Toast.LENGTH_SHORT);
}
mNotSelectableToast.show();
}
private void showSharePopup() {
mImageSaver.waitDone();
Uri uri = mThumbnail.getUri();
if (mSharePopup == null || !uri.equals(mSharePopup.getUri())) {
// SharePopup window takes the mPreviewPanel as its size reference.
mSharePopup = new SharePopup(this, uri, mThumbnail.getBitmap(),
mOrientationCompensation, mPreviewPanel);
}
mSharePopup.showAtLocation(mThumbnailView, Gravity.NO_GRAVITY, 0, 0);
}
@Override
public void onFaceDetection(Face[] faces, android.hardware.Camera camera) {
mFaceView.setFaces(faces);
}
private void showTapToFocusToast() {
new RotateTextToast(this, R.string.tap_to_focus, mOrientation).show();
// Clear the preference.
Editor editor = mPreferences.edit();
editor.putBoolean(CameraSettings.KEY_CAMERA_FIRST_USE_HINT_SHOWN, false);
editor.apply();
}
private void initializeCapabilities() {
mInitialParams = mCameraDevice.getParameters();
mFocusManager.initializeParameters(mInitialParams);
mFocusAreaSupported = (mInitialParams.getMaxNumFocusAreas() > 0
&& isSupported(Parameters.FOCUS_MODE_AUTO,
mInitialParams.getSupportedFocusModes()));
mMeteringAreaSupported = (mInitialParams.getMaxNumMeteringAreas() > 0);
mAeLockSupported = mInitialParams.isAutoExposureLockSupported();
mAwbLockSupported = mInitialParams.isAutoWhiteBalanceLockSupported();
}
}