/* * Copyright (C) 2007 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.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.hardware.CameraSound; import android.location.Location; import android.media.CameraProfile; 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 CameraSound 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 mQueue; private Thumbnail mPendingThumbnail; private Object mUpdateThumbnailLock = new Object(); private boolean mStop; // Runs in main thread public ImageSaver() { mQueue = new ArrayList(); 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.playSound(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()); mCameraId = CameraSettings.readPreferredCameraId(mPreferences); // 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()); mNumberOfCameras = CameraHolder.instance().getNumberOfCameras(); 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 CameraSound(); // 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 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 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 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 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 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 == mFrontCameraId) ? mBackCameraId : mFrontCameraId)); 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(); } }