| /* |
| * Copyright (C) 2009 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.util; |
| |
| import android.app.Activity; |
| import android.app.AlertDialog; |
| import android.app.admin.DevicePolicyManager; |
| import android.content.ActivityNotFoundException; |
| import android.content.ComponentName; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.DialogInterface; |
| import android.content.Intent; |
| import android.graphics.Bitmap; |
| import android.graphics.BitmapFactory; |
| import android.graphics.Matrix; |
| import android.graphics.Point; |
| import android.graphics.Rect; |
| import android.graphics.RectF; |
| import android.hardware.Camera; |
| import android.hardware.Camera.CameraInfo; |
| import android.hardware.Camera.Parameters; |
| import android.hardware.Camera.Size; |
| import android.location.Location; |
| import android.net.Uri; |
| import android.os.Handler; |
| import android.os.ParcelFileDescriptor; |
| import android.telephony.TelephonyManager; |
| import android.util.DisplayMetrics; |
| import android.util.Log; |
| import android.util.TypedValue; |
| import android.view.Display; |
| import android.view.OrientationEventListener; |
| import android.view.Surface; |
| import android.view.View; |
| import android.view.WindowManager; |
| import android.view.animation.AlphaAnimation; |
| import android.view.animation.Animation; |
| import android.widget.Toast; |
| |
| import com.android.camera.CameraActivity; |
| import com.android.camera.CameraDisabledException; |
| import com.android.camera.CameraHolder; |
| import com.android.camera.CameraManager; |
| import com.android.camera.util.IntentHelper; |
| import com.android.camera2.R; |
| |
| import java.io.Closeable; |
| import java.io.IOException; |
| import java.lang.reflect.Method; |
| import java.text.SimpleDateFormat; |
| import java.util.Date; |
| import java.util.List; |
| import java.util.Locale; |
| import java.util.StringTokenizer; |
| |
| /** |
| * Collection of utility functions used in this package. |
| */ |
| public class CameraUtil { |
| private static final String TAG = "Util"; |
| |
| // For calculate the best fps range for still image capture. |
| private final static int MAX_PREVIEW_FPS_TIMES_1000 = 400000; |
| private final static int PREFERRED_PREVIEW_FPS_TIMES_1000 = 30000; |
| |
| // For creating crop intents. |
| public static final String KEY_RETURN_DATA = "return-data"; |
| public static final String KEY_SHOW_WHEN_LOCKED = "showWhenLocked"; |
| |
| // Orientation hysteresis amount used in rounding, in degrees |
| public static final int ORIENTATION_HYSTERESIS = 5; |
| |
| public static final String REVIEW_ACTION = "com.android.camera.action.REVIEW"; |
| // See android.hardware.Camera.ACTION_NEW_PICTURE. |
| public static final String ACTION_NEW_PICTURE = "android.hardware.action.NEW_PICTURE"; |
| // See android.hardware.Camera.ACTION_NEW_VIDEO. |
| public static final String ACTION_NEW_VIDEO = "android.hardware.action.NEW_VIDEO"; |
| |
| // Broadcast Action: The camera application has become active in picture-taking mode. |
| public static final String ACTION_CAMERA_STARTED = "com.android.camera.action.CAMERA_STARTED"; |
| // Broadcast Action: The camera application is no longer in active picture-taking mode. |
| public static final String ACTION_CAMERA_STOPPED = "com.android.camera.action.CAMERA_STOPPED"; |
| // When the camera application is active in picture-taking mode, it listens for this intent, |
| // which upon receipt will trigger the shutter to capture a new picture, as if the user had |
| // pressed the shutter button. |
| public static final String ACTION_CAMERA_SHUTTER_CLICK = |
| "com.android.camera.action.SHUTTER_CLICK"; |
| |
| // Fields from android.hardware.Camera.Parameters |
| public static final String FOCUS_MODE_CONTINUOUS_PICTURE = "continuous-picture"; |
| public static final String RECORDING_HINT = "recording-hint"; |
| private static final String AUTO_EXPOSURE_LOCK_SUPPORTED = "auto-exposure-lock-supported"; |
| private static final String AUTO_WHITE_BALANCE_LOCK_SUPPORTED = "auto-whitebalance-lock-supported"; |
| private static final String VIDEO_SNAPSHOT_SUPPORTED = "video-snapshot-supported"; |
| public static final String SCENE_MODE_HDR = "hdr"; |
| public static final String TRUE = "true"; |
| public static final String FALSE = "false"; |
| |
| // Fields for the show-on-maps-functionality |
| private static final String MAPS_PACKAGE_NAME = "com.google.android.apps.maps"; |
| private static final String MAPS_CLASS_NAME = "com.google.android.maps.MapsActivity"; |
| |
| /** Has to be in sync with the receiving MovieActivity. */ |
| public static final String KEY_TREAT_UP_AS_BACK = "treat-up-as-back"; |
| |
| public static boolean isSupported(String value, List<String> supported) { |
| return supported == null ? false : supported.indexOf(value) >= 0; |
| } |
| |
| public static boolean isAutoExposureLockSupported(Parameters params) { |
| return TRUE.equals(params.get(AUTO_EXPOSURE_LOCK_SUPPORTED)); |
| } |
| |
| public static boolean isAutoWhiteBalanceLockSupported(Parameters params) { |
| return TRUE.equals(params.get(AUTO_WHITE_BALANCE_LOCK_SUPPORTED)); |
| } |
| |
| public static boolean isVideoSnapshotSupported(Parameters params) { |
| return TRUE.equals(params.get(VIDEO_SNAPSHOT_SUPPORTED)); |
| } |
| |
| public static boolean isCameraHdrSupported(Parameters params) { |
| List<String> supported = params.getSupportedSceneModes(); |
| return (supported != null) && supported.contains(SCENE_MODE_HDR); |
| } |
| |
| public static boolean isMeteringAreaSupported(Parameters params) { |
| return params.getMaxNumMeteringAreas() > 0; |
| } |
| |
| public static boolean isFocusAreaSupported(Parameters params) { |
| return (params.getMaxNumFocusAreas() > 0 |
| && isSupported(Parameters.FOCUS_MODE_AUTO, |
| params.getSupportedFocusModes())); |
| } |
| |
| // Private intent extras. Test only. |
| private static final String EXTRAS_CAMERA_FACING = |
| "android.intent.extras.CAMERA_FACING"; |
| |
| private static float sPixelDensity = 1; |
| private static ImageFileNamer sImageFileNamer; |
| |
| private CameraUtil() { |
| } |
| |
| public static void initialize(Context context) { |
| DisplayMetrics metrics = new DisplayMetrics(); |
| WindowManager wm = (WindowManager) |
| context.getSystemService(Context.WINDOW_SERVICE); |
| wm.getDefaultDisplay().getMetrics(metrics); |
| sPixelDensity = metrics.density; |
| sImageFileNamer = new ImageFileNamer( |
| context.getString(R.string.image_file_name_format)); |
| } |
| |
| public static int dpToPixel(int dp) { |
| return Math.round(sPixelDensity * dp); |
| } |
| |
| // Rotates the bitmap by the specified degree. |
| // If a new bitmap is created, the original bitmap is recycled. |
| public static Bitmap rotate(Bitmap b, int degrees) { |
| return rotateAndMirror(b, degrees, false); |
| } |
| |
| // Rotates and/or mirrors the bitmap. If a new bitmap is created, the |
| // original bitmap is recycled. |
| public static Bitmap rotateAndMirror(Bitmap b, int degrees, boolean mirror) { |
| if ((degrees != 0 || mirror) && b != null) { |
| Matrix m = new Matrix(); |
| // Mirror first. |
| // horizontal flip + rotation = -rotation + horizontal flip |
| if (mirror) { |
| m.postScale(-1, 1); |
| degrees = (degrees + 360) % 360; |
| if (degrees == 0 || degrees == 180) { |
| m.postTranslate(b.getWidth(), 0); |
| } else if (degrees == 90 || degrees == 270) { |
| m.postTranslate(b.getHeight(), 0); |
| } else { |
| throw new IllegalArgumentException("Invalid degrees=" + degrees); |
| } |
| } |
| if (degrees != 0) { |
| // clockwise |
| m.postRotate(degrees, |
| (float) b.getWidth() / 2, (float) b.getHeight() / 2); |
| } |
| |
| try { |
| Bitmap b2 = Bitmap.createBitmap( |
| b, 0, 0, b.getWidth(), b.getHeight(), m, true); |
| if (b != b2) { |
| b.recycle(); |
| b = b2; |
| } |
| } catch (OutOfMemoryError ex) { |
| // We have no memory to rotate. Return the original bitmap. |
| } |
| } |
| return b; |
| } |
| |
| /* |
| * Compute the sample size as a function of minSideLength |
| * and maxNumOfPixels. |
| * minSideLength is used to specify that minimal width or height of a |
| * bitmap. |
| * maxNumOfPixels is used to specify the maximal size in pixels that is |
| * tolerable in terms of memory usage. |
| * |
| * The function returns a sample size based on the constraints. |
| * Both size and minSideLength can be passed in as -1 |
| * which indicates no care of the corresponding constraint. |
| * The functions prefers returning a sample size that |
| * generates a smaller bitmap, unless minSideLength = -1. |
| * |
| * Also, the function rounds up the sample size to a power of 2 or multiple |
| * of 8 because BitmapFactory only honors sample size this way. |
| * For example, BitmapFactory downsamples an image by 2 even though the |
| * request is 3. So we round up the sample size to avoid OOM. |
| */ |
| public static int computeSampleSize(BitmapFactory.Options options, |
| int minSideLength, int maxNumOfPixels) { |
| int initialSize = computeInitialSampleSize(options, minSideLength, |
| maxNumOfPixels); |
| |
| int roundedSize; |
| if (initialSize <= 8) { |
| roundedSize = 1; |
| while (roundedSize < initialSize) { |
| roundedSize <<= 1; |
| } |
| } else { |
| roundedSize = (initialSize + 7) / 8 * 8; |
| } |
| |
| return roundedSize; |
| } |
| |
| private static int computeInitialSampleSize(BitmapFactory.Options options, |
| int minSideLength, int maxNumOfPixels) { |
| double w = options.outWidth; |
| double h = options.outHeight; |
| |
| int lowerBound = (maxNumOfPixels < 0) ? 1 : |
| (int) Math.ceil(Math.sqrt(w * h / maxNumOfPixels)); |
| int upperBound = (minSideLength < 0) ? 128 : |
| (int) Math.min(Math.floor(w / minSideLength), |
| Math.floor(h / minSideLength)); |
| |
| if (upperBound < lowerBound) { |
| // return the larger one when there is no overlapping zone. |
| return lowerBound; |
| } |
| |
| if (maxNumOfPixels < 0 && minSideLength < 0) { |
| return 1; |
| } else if (minSideLength < 0) { |
| return lowerBound; |
| } else { |
| return upperBound; |
| } |
| } |
| |
| public static Bitmap makeBitmap(byte[] jpegData, int maxNumOfPixels) { |
| try { |
| BitmapFactory.Options options = new BitmapFactory.Options(); |
| options.inJustDecodeBounds = true; |
| BitmapFactory.decodeByteArray(jpegData, 0, jpegData.length, |
| options); |
| if (options.mCancel || options.outWidth == -1 |
| || options.outHeight == -1) { |
| return null; |
| } |
| options.inSampleSize = computeSampleSize( |
| options, -1, maxNumOfPixels); |
| options.inJustDecodeBounds = false; |
| |
| options.inDither = false; |
| options.inPreferredConfig = Bitmap.Config.ARGB_8888; |
| return BitmapFactory.decodeByteArray(jpegData, 0, jpegData.length, |
| options); |
| } catch (OutOfMemoryError ex) { |
| Log.e(TAG, "Got oom exception ", ex); |
| return null; |
| } |
| } |
| |
| public static void closeSilently(Closeable c) { |
| if (c == null) return; |
| try { |
| c.close(); |
| } catch (Throwable t) { |
| // do nothing |
| } |
| } |
| |
| public static void Assert(boolean cond) { |
| if (!cond) { |
| throw new AssertionError(); |
| } |
| } |
| |
| private static void throwIfCameraDisabled(Activity activity) throws CameraDisabledException { |
| // Check if device policy has disabled the camera. |
| DevicePolicyManager dpm = (DevicePolicyManager) activity.getSystemService( |
| Context.DEVICE_POLICY_SERVICE); |
| if (dpm.getCameraDisabled(null)) { |
| throw new CameraDisabledException(); |
| } |
| } |
| |
| public static CameraManager.CameraProxy openCamera( |
| Activity activity, final int cameraId, |
| Handler handler, final CameraManager.CameraOpenErrorCallback cb) { |
| try { |
| throwIfCameraDisabled(activity); |
| return CameraHolder.instance().open(handler, cameraId, cb); |
| } catch (CameraDisabledException ex) { |
| handler.post(new Runnable() { |
| @Override |
| public void run() { |
| cb.onCameraDisabled(cameraId); |
| } |
| }); |
| } |
| return null; |
| } |
| |
| public static void showErrorAndFinish(final Activity activity, int msgId) { |
| DialogInterface.OnClickListener buttonListener = |
| new DialogInterface.OnClickListener() { |
| @Override |
| public void onClick(DialogInterface dialog, int which) { |
| activity.finish(); |
| } |
| }; |
| TypedValue out = new TypedValue(); |
| activity.getTheme().resolveAttribute(android.R.attr.alertDialogIcon, out, true); |
| new AlertDialog.Builder(activity) |
| .setCancelable(false) |
| .setTitle(R.string.camera_error_title) |
| .setMessage(msgId) |
| .setNeutralButton(R.string.dialog_ok, buttonListener) |
| .setIcon(out.resourceId) |
| .show(); |
| } |
| |
| public static <T> T checkNotNull(T object) { |
| if (object == null) throw new NullPointerException(); |
| return object; |
| } |
| |
| public static boolean equals(Object a, Object b) { |
| return (a == b) || (a == null ? false : a.equals(b)); |
| } |
| |
| public static int nextPowerOf2(int n) { |
| n -= 1; |
| n |= n >>> 16; |
| n |= n >>> 8; |
| n |= n >>> 4; |
| n |= n >>> 2; |
| n |= n >>> 1; |
| return n + 1; |
| } |
| |
| public static float distance(float x, float y, float sx, float sy) { |
| float dx = x - sx; |
| float dy = y - sy; |
| return (float) Math.sqrt(dx * dx + dy * dy); |
| } |
| |
| public static int clamp(int x, int min, int max) { |
| if (x > max) return max; |
| if (x < min) return min; |
| return x; |
| } |
| |
| public static float clamp(float x, float min, float max) { |
| if (x > max) return max; |
| if (x < min) return min; |
| return x; |
| } |
| |
| public static int getDisplayRotation(Activity activity) { |
| int rotation = activity.getWindowManager().getDefaultDisplay() |
| .getRotation(); |
| switch (rotation) { |
| case Surface.ROTATION_0: return 0; |
| case Surface.ROTATION_90: return 90; |
| case Surface.ROTATION_180: return 180; |
| case Surface.ROTATION_270: return 270; |
| } |
| return 0; |
| } |
| |
| /** |
| * Calculate the default orientation of the device based on the width and |
| * height of the display when rotation = 0 (i.e. natural width and height) |
| * @param activity the activity context |
| * @return whether the default orientation of the device is portrait |
| */ |
| public static boolean isDefaultToPortrait(Activity activity) { |
| Display currentDisplay = activity.getWindowManager().getDefaultDisplay(); |
| Point displaySize = new Point(); |
| currentDisplay.getSize(displaySize); |
| int orientation = currentDisplay.getRotation(); |
| int naturalWidth, naturalHeight; |
| if (orientation == Surface.ROTATION_0 || orientation == Surface.ROTATION_180) { |
| naturalWidth = displaySize.x; |
| naturalHeight = displaySize.y; |
| } else { |
| naturalWidth = displaySize.y; |
| naturalHeight = displaySize.x; |
| } |
| return naturalWidth < naturalHeight; |
| } |
| |
| public static int getDisplayOrientation(int degrees, int cameraId) { |
| // See android.hardware.Camera.setDisplayOrientation for |
| // documentation. |
| Camera.CameraInfo info = new Camera.CameraInfo(); |
| Camera.getCameraInfo(cameraId, info); |
| int result; |
| if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) { |
| result = (info.orientation + degrees) % 360; |
| result = (360 - result) % 360; // compensate the mirror |
| } else { // back-facing |
| result = (info.orientation - degrees + 360) % 360; |
| } |
| return result; |
| } |
| |
| public static int getCameraOrientation(int cameraId) { |
| Camera.CameraInfo info = new Camera.CameraInfo(); |
| Camera.getCameraInfo(cameraId, info); |
| return info.orientation; |
| } |
| |
| public static int roundOrientation(int orientation, int orientationHistory) { |
| boolean changeOrientation = false; |
| if (orientationHistory == OrientationEventListener.ORIENTATION_UNKNOWN) { |
| changeOrientation = true; |
| } else { |
| int dist = Math.abs(orientation - orientationHistory); |
| dist = Math.min( dist, 360 - dist ); |
| changeOrientation = ( dist >= 45 + ORIENTATION_HYSTERESIS ); |
| } |
| if (changeOrientation) { |
| return ((orientation + 45) / 90 * 90) % 360; |
| } |
| return orientationHistory; |
| } |
| |
| private static Point getDefaultDisplaySize(Activity activity, Point size) { |
| activity.getWindowManager().getDefaultDisplay().getSize(size); |
| return size; |
| } |
| |
| public static Size getOptimalPreviewSize(Activity currentActivity, |
| List<Size> sizes, double targetRatio) { |
| |
| Point[] points = new Point[sizes.size()]; |
| |
| int index = 0; |
| for (Size s : sizes) { |
| points[index++] = new Point(s.width, s.height); |
| } |
| |
| int optimalPickIndex = getOptimalPreviewSize(currentActivity, points, targetRatio); |
| return (optimalPickIndex == -1) ? null : sizes.get(optimalPickIndex); |
| } |
| |
| public static int getOptimalPreviewSize(Activity currentActivity, |
| Point[] sizes, double targetRatio) { |
| // Use a very small tolerance because we want an exact match. |
| final double ASPECT_TOLERANCE = 0.01; |
| if (sizes == null) return -1; |
| |
| int optimalSizeIndex = -1; |
| double minDiff = Double.MAX_VALUE; |
| |
| // Because of bugs of overlay and layout, we sometimes will try to |
| // layout the viewfinder in the portrait orientation and thus get the |
| // wrong size of preview surface. When we change the preview size, the |
| // new overlay will be created before the old one closed, which causes |
| // an exception. For now, just get the screen size. |
| Point point = getDefaultDisplaySize(currentActivity, new Point()); |
| int targetHeight = Math.min(point.x, point.y); |
| // Try to find an size match aspect ratio and size |
| for (int i = 0; i < sizes.length; i++) { |
| Point size = sizes[i]; |
| double ratio = (double) size.x / size.y; |
| if (Math.abs(ratio - targetRatio) > ASPECT_TOLERANCE) continue; |
| if (Math.abs(size.y - targetHeight) < minDiff) { |
| optimalSizeIndex = i; |
| minDiff = Math.abs(size.y - targetHeight); |
| } |
| } |
| // Cannot find the one match the aspect ratio. This should not happen. |
| // Ignore the requirement. |
| if (optimalSizeIndex == -1) { |
| Log.w(TAG, "No preview size match the aspect ratio"); |
| minDiff = Double.MAX_VALUE; |
| for (int i = 0; i < sizes.length; i++) { |
| Point size = sizes[i]; |
| if (Math.abs(size.y - targetHeight) < minDiff) { |
| optimalSizeIndex = i; |
| minDiff = Math.abs(size.y - targetHeight); |
| } |
| } |
| } |
| return optimalSizeIndex; |
| } |
| |
| // Returns the largest picture size which matches the given aspect ratio. |
| public static Size getOptimalVideoSnapshotPictureSize( |
| List<Size> sizes, double targetRatio) { |
| // Use a very small tolerance because we want an exact match. |
| final double ASPECT_TOLERANCE = 0.001; |
| if (sizes == null) return null; |
| |
| Size optimalSize = null; |
| |
| // Try to find a size matches aspect ratio and has the largest width |
| for (Size size : sizes) { |
| double ratio = (double) size.width / size.height; |
| if (Math.abs(ratio - targetRatio) > ASPECT_TOLERANCE) continue; |
| if (optimalSize == null || size.width > optimalSize.width) { |
| optimalSize = size; |
| } |
| } |
| |
| // Cannot find one that matches the aspect ratio. This should not happen. |
| // Ignore the requirement. |
| if (optimalSize == null) { |
| Log.w(TAG, "No picture size match the aspect ratio"); |
| for (Size size : sizes) { |
| if (optimalSize == null || size.width > optimalSize.width) { |
| optimalSize = size; |
| } |
| } |
| } |
| return optimalSize; |
| } |
| |
| public static void dumpParameters(Parameters parameters) { |
| String flattened = parameters.flatten(); |
| StringTokenizer tokenizer = new StringTokenizer(flattened, ";"); |
| Log.d(TAG, "Dump all camera parameters:"); |
| while (tokenizer.hasMoreElements()) { |
| Log.d(TAG, tokenizer.nextToken()); |
| } |
| } |
| |
| /** |
| * Returns whether the device is voice-capable (meaning, it can do MMS). |
| */ |
| public static boolean isMmsCapable(Context context) { |
| TelephonyManager telephonyManager = (TelephonyManager) |
| context.getSystemService(Context.TELEPHONY_SERVICE); |
| if (telephonyManager == null) { |
| return false; |
| } |
| |
| try { |
| Class<?> partypes[] = new Class[0]; |
| Method sIsVoiceCapable = TelephonyManager.class.getMethod( |
| "isVoiceCapable", partypes); |
| |
| Object arglist[] = new Object[0]; |
| Object retobj = sIsVoiceCapable.invoke(telephonyManager, arglist); |
| return (Boolean) retobj; |
| } catch (java.lang.reflect.InvocationTargetException ite) { |
| // Failure, must be another device. |
| // Assume that it is voice capable. |
| } catch (IllegalAccessException iae) { |
| // Failure, must be an other device. |
| // Assume that it is voice capable. |
| } catch (NoSuchMethodException nsme) { |
| } |
| return true; |
| } |
| |
| // This is for test only. Allow the camera to launch the specific camera. |
| public static int getCameraFacingIntentExtras(Activity currentActivity) { |
| int cameraId = -1; |
| |
| int intentCameraId = |
| currentActivity.getIntent().getIntExtra(CameraUtil.EXTRAS_CAMERA_FACING, -1); |
| |
| if (isFrontCameraIntent(intentCameraId)) { |
| // Check if the front camera exist |
| int frontCameraId = CameraHolder.instance().getFrontCameraId(); |
| if (frontCameraId != -1) { |
| cameraId = frontCameraId; |
| } |
| } else if (isBackCameraIntent(intentCameraId)) { |
| // Check if the back camera exist |
| int backCameraId = CameraHolder.instance().getBackCameraId(); |
| if (backCameraId != -1) { |
| cameraId = backCameraId; |
| } |
| } |
| return cameraId; |
| } |
| |
| private static boolean isFrontCameraIntent(int intentCameraId) { |
| return (intentCameraId == android.hardware.Camera.CameraInfo.CAMERA_FACING_FRONT); |
| } |
| |
| private static boolean isBackCameraIntent(int intentCameraId) { |
| return (intentCameraId == android.hardware.Camera.CameraInfo.CAMERA_FACING_BACK); |
| } |
| |
| private static int sLocation[] = new int[2]; |
| |
| // This method is not thread-safe. |
| public static boolean pointInView(float x, float y, View v) { |
| v.getLocationInWindow(sLocation); |
| return x >= sLocation[0] && x < (sLocation[0] + v.getWidth()) |
| && y >= sLocation[1] && y < (sLocation[1] + v.getHeight()); |
| } |
| |
| public static int[] getRelativeLocation(View reference, View view) { |
| reference.getLocationInWindow(sLocation); |
| int referenceX = sLocation[0]; |
| int referenceY = sLocation[1]; |
| view.getLocationInWindow(sLocation); |
| sLocation[0] -= referenceX; |
| sLocation[1] -= referenceY; |
| return sLocation; |
| } |
| |
| public static boolean isUriValid(Uri uri, ContentResolver resolver) { |
| if (uri == null) return false; |
| |
| try { |
| ParcelFileDescriptor pfd = resolver.openFileDescriptor(uri, "r"); |
| if (pfd == null) { |
| Log.e(TAG, "Fail to open URI. URI=" + uri); |
| return false; |
| } |
| pfd.close(); |
| } catch (IOException ex) { |
| return false; |
| } |
| return true; |
| } |
| |
| public static void dumpRect(RectF rect, String msg) { |
| Log.v(TAG, msg + "=(" + rect.left + "," + rect.top |
| + "," + rect.right + "," + rect.bottom + ")"); |
| } |
| |
| public static void rectFToRect(RectF rectF, Rect rect) { |
| rect.left = Math.round(rectF.left); |
| rect.top = Math.round(rectF.top); |
| rect.right = Math.round(rectF.right); |
| rect.bottom = Math.round(rectF.bottom); |
| } |
| |
| public static Rect rectFToRect(RectF rectF) { |
| Rect rect = new Rect(); |
| rectFToRect(rectF, rect); |
| return rect; |
| } |
| |
| public static RectF rectToRectF(Rect r) { |
| return new RectF(r.left, r.top, r.right, r.bottom); |
| } |
| |
| public static void prepareMatrix(Matrix matrix, boolean mirror, int displayOrientation, |
| int viewWidth, int viewHeight) { |
| // Need mirror for front camera. |
| matrix.setScale(mirror ? -1 : 1, 1); |
| // This is the value for android.hardware.Camera.setDisplayOrientation. |
| matrix.postRotate(displayOrientation); |
| // Camera driver coordinates range from (-1000, -1000) to (1000, 1000). |
| // UI coordinates range from (0, 0) to (width, height). |
| matrix.postScale(viewWidth / 2000f, viewHeight / 2000f); |
| matrix.postTranslate(viewWidth / 2f, viewHeight / 2f); |
| } |
| |
| public static void prepareMatrix(Matrix matrix, boolean mirror, int displayOrientation, |
| Rect previewRect) { |
| // Need mirror for front camera. |
| matrix.setScale(mirror ? -1 : 1, 1); |
| // This is the value for android.hardware.Camera.setDisplayOrientation. |
| matrix.postRotate(displayOrientation); |
| |
| // Camera driver coordinates range from (-1000, -1000) to (1000, 1000). |
| // We need to map camera driver coordinates to preview rect coordinates |
| Matrix mapping = new Matrix(); |
| mapping.setRectToRect(new RectF(-1000, -1000, 1000, 1000), rectToRectF(previewRect), |
| Matrix.ScaleToFit.FILL); |
| matrix.setConcat(mapping, matrix); |
| } |
| |
| public static String createJpegName(long dateTaken) { |
| synchronized (sImageFileNamer) { |
| return sImageFileNamer.generateName(dateTaken); |
| } |
| } |
| |
| public static void broadcastNewPicture(Context context, Uri uri) { |
| context.sendBroadcast(new Intent(ACTION_NEW_PICTURE, uri)); |
| // Keep compatibility |
| context.sendBroadcast(new Intent("com.android.camera.NEW_PICTURE", uri)); |
| } |
| |
| public static void fadeIn(View view, float startAlpha, float endAlpha, long duration) { |
| if (view.getVisibility() == View.VISIBLE) return; |
| |
| view.setVisibility(View.VISIBLE); |
| Animation animation = new AlphaAnimation(startAlpha, endAlpha); |
| animation.setDuration(duration); |
| view.startAnimation(animation); |
| } |
| |
| public static void fadeIn(View view) { |
| fadeIn(view, 0F, 1F, 400); |
| |
| // We disabled the button in fadeOut(), so enable it here. |
| view.setEnabled(true); |
| } |
| |
| public static void fadeOut(View view) { |
| if (view.getVisibility() != View.VISIBLE) return; |
| |
| // Since the button is still clickable before fade-out animation |
| // ends, we disable the button first to block click. |
| view.setEnabled(false); |
| Animation animation = new AlphaAnimation(1F, 0F); |
| animation.setDuration(400); |
| view.startAnimation(animation); |
| view.setVisibility(View.GONE); |
| } |
| |
| public static int getJpegRotation(int cameraId, int orientation) { |
| // See android.hardware.Camera.Parameters.setRotation for |
| // documentation. |
| int rotation = 0; |
| if (orientation != OrientationEventListener.ORIENTATION_UNKNOWN) { |
| CameraInfo info = CameraHolder.instance().getCameraInfo()[cameraId]; |
| if (info.facing == CameraInfo.CAMERA_FACING_FRONT) { |
| rotation = (info.orientation - orientation + 360) % 360; |
| } else { // back-facing camera |
| rotation = (info.orientation + orientation) % 360; |
| } |
| } |
| return rotation; |
| } |
| |
| /** |
| * Down-samples a jpeg byte array. |
| * @param data a byte array of jpeg data |
| * @param downSampleFactor down-sample factor |
| * @return decoded and down-sampled bitmap |
| */ |
| public static Bitmap downSample(final byte[] data, int downSampleFactor) { |
| final BitmapFactory.Options opts = new BitmapFactory.Options(); |
| // Downsample the image |
| opts.inSampleSize = downSampleFactor; |
| return BitmapFactory.decodeByteArray(data, 0, data.length, opts); |
| } |
| |
| public static void setGpsParameters(Parameters parameters, Location loc) { |
| // Clear previous GPS location from the parameters. |
| parameters.removeGpsData(); |
| |
| // We always encode GpsTimeStamp |
| parameters.setGpsTimestamp(System.currentTimeMillis() / 1000); |
| |
| // Set GPS location. |
| if (loc != null) { |
| double lat = loc.getLatitude(); |
| double lon = loc.getLongitude(); |
| boolean hasLatLon = (lat != 0.0d) || (lon != 0.0d); |
| |
| if (hasLatLon) { |
| Log.d(TAG, "Set gps location"); |
| parameters.setGpsLatitude(lat); |
| parameters.setGpsLongitude(lon); |
| parameters.setGpsProcessingMethod(loc.getProvider().toUpperCase()); |
| if (loc.hasAltitude()) { |
| parameters.setGpsAltitude(loc.getAltitude()); |
| } else { |
| // for NETWORK_PROVIDER location provider, we may have |
| // no altitude information, but the driver needs it, so |
| // we fake one. |
| parameters.setGpsAltitude(0); |
| } |
| if (loc.getTime() != 0) { |
| // Location.getTime() is UTC in milliseconds. |
| // gps-timestamp is UTC in seconds. |
| long utcTimeSeconds = loc.getTime() / 1000; |
| parameters.setGpsTimestamp(utcTimeSeconds); |
| } |
| } else { |
| loc = null; |
| } |
| } |
| } |
| |
| /** |
| * For still image capture, we need to get the right fps range such that the |
| * camera can slow down the framerate to allow for less-noisy/dark |
| * viewfinder output in dark conditions. |
| * |
| * @param params Camera's parameters. |
| * @return null if no appropiate fps range can't be found. Otherwise, return |
| * the right range. |
| */ |
| public static int[] getPhotoPreviewFpsRange(Parameters params) { |
| return getPhotoPreviewFpsRange(params.getSupportedPreviewFpsRange()); |
| } |
| |
| public static int[] getPhotoPreviewFpsRange(List<int[]> frameRates) { |
| if (frameRates.size() == 0) { |
| Log.e(TAG, "No suppoted frame rates returned!"); |
| return null; |
| } |
| |
| // Find the lowest min rate in supported ranges who can cover 30fps. |
| int lowestMinRate = MAX_PREVIEW_FPS_TIMES_1000; |
| for (int[] rate : frameRates) { |
| int minFps = rate[Parameters.PREVIEW_FPS_MIN_INDEX]; |
| int maxFps = rate[Parameters.PREVIEW_FPS_MAX_INDEX]; |
| if (maxFps >= PREFERRED_PREVIEW_FPS_TIMES_1000 && |
| minFps <= PREFERRED_PREVIEW_FPS_TIMES_1000 && |
| minFps < lowestMinRate) { |
| lowestMinRate = minFps; |
| } |
| } |
| |
| // Find all the modes with the lowest min rate found above, the pick the |
| // one with highest max rate. |
| int resultIndex = -1; |
| int highestMaxRate = 0; |
| for (int i = 0; i < frameRates.size(); i++) { |
| int[] rate = frameRates.get(i); |
| int minFps = rate[Parameters.PREVIEW_FPS_MIN_INDEX]; |
| int maxFps = rate[Parameters.PREVIEW_FPS_MAX_INDEX]; |
| if (minFps == lowestMinRate && highestMaxRate < maxFps) { |
| highestMaxRate = maxFps; |
| resultIndex = i; |
| } |
| } |
| |
| if (resultIndex >= 0) { |
| return frameRates.get(resultIndex); |
| } |
| Log.e(TAG, "Can't find an appropiate frame rate range!"); |
| return null; |
| } |
| |
| public static int[] getMaxPreviewFpsRange(Parameters params) { |
| List<int[]> frameRates = params.getSupportedPreviewFpsRange(); |
| if (frameRates != null && frameRates.size() > 0) { |
| // The list is sorted. Return the last element. |
| return frameRates.get(frameRates.size() - 1); |
| } |
| return new int[0]; |
| } |
| |
| private static class ImageFileNamer { |
| private final SimpleDateFormat mFormat; |
| |
| // The date (in milliseconds) used to generate the last name. |
| private long mLastDate; |
| |
| // Number of names generated for the same second. |
| private int mSameSecondCount; |
| |
| public ImageFileNamer(String format) { |
| mFormat = new SimpleDateFormat(format); |
| } |
| |
| public String generateName(long dateTaken) { |
| Date date = new Date(dateTaken); |
| String result = mFormat.format(date); |
| |
| // If the last name was generated for the same second, |
| // we append _1, _2, etc to the name. |
| if (dateTaken / 1000 == mLastDate / 1000) { |
| mSameSecondCount++; |
| result += "_" + mSameSecondCount; |
| } else { |
| mLastDate = dateTaken; |
| mSameSecondCount = 0; |
| } |
| |
| return result; |
| } |
| } |
| |
| public static void playVideo(Activity activity, Uri uri, String title) { |
| try { |
| boolean isSecureCamera = ((CameraActivity)activity).isSecureCamera(); |
| if (!isSecureCamera) { |
| Intent intent = IntentHelper.getVideoPlayerIntent(activity, uri) |
| .putExtra(Intent.EXTRA_TITLE, title) |
| .putExtra(KEY_TREAT_UP_AS_BACK, true); |
| activity.startActivityForResult(intent, CameraActivity.REQ_CODE_DONT_SWITCH_TO_PREVIEW); |
| } else { |
| // In order not to send out any intent to be intercepted and |
| // show the lock screen immediately, we just let the secure |
| // camera activity finish. |
| activity.finish(); |
| } |
| } catch (ActivityNotFoundException e) { |
| Toast.makeText(activity, activity.getString(R.string.video_err), |
| Toast.LENGTH_SHORT).show(); |
| } |
| } |
| |
| /** |
| * Starts GMM with the given location shown. If this fails, and GMM could |
| * not be found, we use a geo intent as a fallback. |
| * |
| * @param activity the activity to use for launching the Maps intent. |
| * @param latLong a 2-element array containing {latitude/longitude}. |
| */ |
| public static void showOnMap(Activity activity, double[] latLong) { |
| try { |
| // We don't use "geo:latitude,longitude" because it only centers |
| // the MapView to the specified location, but we need a marker |
| // for further operations (routing to/from). |
| // The q=(lat, lng) syntax is suggested by geo-team. |
| String uri = String.format(Locale.ENGLISH, "http://maps.google.com/maps?f=q&q=(%f,%f)", |
| latLong[0], latLong[1]); |
| ComponentName compName = new ComponentName(MAPS_PACKAGE_NAME, |
| MAPS_CLASS_NAME); |
| Intent mapsIntent = new Intent(Intent.ACTION_VIEW, |
| Uri.parse(uri)).setComponent(compName); |
| activity.startActivityForResult(mapsIntent, |
| CameraActivity.REQ_CODE_DONT_SWITCH_TO_PREVIEW); |
| } catch (ActivityNotFoundException e) { |
| // Use the "geo intent" if no GMM is installed |
| Log.e(TAG, "GMM activity not found!", e); |
| String url = String.format(Locale.ENGLISH, "geo:%f,%f", latLong[0], latLong[1]); |
| Intent mapsIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); |
| activity.startActivity(mapsIntent); |
| } |
| } |
| |
| /** |
| * Dumps the stack trace. |
| * |
| * @param level How many levels of the stack are dumped. 0 means all. |
| * @return A {@link java.lang.String} of all the output with newline |
| * between each. |
| */ |
| public static String dumpStackTrace(int level) { |
| StackTraceElement[] elems = Thread.currentThread().getStackTrace(); |
| // Ignore the first 3 elements. |
| level = (level == 0 ? elems.length : Math.min(level + 3, elems.length)); |
| String ret = new String(); |
| for (int i = 3; i < level; i++) { |
| ret = ret + "\t" + elems[i].toString() + '\n'; |
| } |
| return ret; |
| } |
| |
| /** |
| * Launches apps supporting action {@link Intent.ACTION_MAIN} of category |
| * {@link Intent.CATEGORY_APP_GALLERY}. Note that |
| * {@link Intent.CATEGORY_APP_GALLERY} is only available on API level 15+. |
| * |
| * @param ctx The {@link android.content.Context} to launch the app. |
| * @return {@code true} on success. |
| */ |
| public static boolean launchGallery(Context ctx) { |
| if (ApiHelper.HAS_APP_GALLERY) { |
| ctx.startActivity(IntentHelper.getGalleryIntent(ctx)); |
| return true; |
| } |
| return false; |
| } |
| } |
