List of usage examples for android.graphics Matrix Matrix
public Matrix()
From source file:com.sim2dial.dialer.ChatFragment.java
private void uploadAndSendImage(final String filePath, final Bitmap image, final ImageSize size) { uploadLayout.setVisibility(View.VISIBLE); textLayout.setVisibility(View.GONE); uploadThread = new Thread(new Runnable() { @Override//from w w w. ja va 2s. c o m public void run() { Bitmap bm = null; String url = null; if (!uploadThread.isInterrupted()) { if (filePath != null) { bm = BitmapFactory.decodeFile(filePath); if (bm != null && size != ImageSize.REAL) { int pixelsMax = size == ImageSize.SMALL ? SIZE_SMALL : size == ImageSize.MEDIUM ? SIZE_MEDIUM : SIZE_LARGE; if (bm.getWidth() > bm.getHeight() && bm.getWidth() > pixelsMax) { bm = Bitmap.createScaledBitmap(bm, pixelsMax, (pixelsMax * bm.getHeight()) / bm.getWidth(), false); } else if (bm.getHeight() > bm.getWidth() && bm.getHeight() > pixelsMax) { bm = Bitmap.createScaledBitmap(bm, (pixelsMax * bm.getWidth()) / bm.getHeight(), pixelsMax, false); } } } else if (image != null) { bm = image; } } // Rotate the bitmap if possible/needed, using EXIF data try { if (filePath != null) { ExifInterface exif = new ExifInterface(filePath); int pictureOrientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, 0); Matrix matrix = new Matrix(); if (pictureOrientation == 6) { matrix.postRotate(90); } else if (pictureOrientation == 3) { matrix.postRotate(180); } else if (pictureOrientation == 8) { matrix.postRotate(270); } bm = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(), bm.getHeight(), matrix, true); } } catch (Exception e) { e.printStackTrace(); } ByteArrayOutputStream outStream = new ByteArrayOutputStream(); if (bm != null) { bm.compress(CompressFormat.JPEG, COMPRESSOR_QUALITY, outStream); } if (!uploadThread.isInterrupted() && bm != null) { url = uploadImage(filePath, bm, COMPRESSOR_QUALITY, outStream.size()); File file = new File(Environment.getExternalStorageDirectory(), getString(R.string.temp_photo_name)); file.delete(); } if (!uploadThread.isInterrupted()) { final Bitmap fbm = bm; final String furl = url; mHandler.post(new Runnable() { @Override public void run() { uploadLayout.setVisibility(View.GONE); textLayout.setVisibility(View.VISIBLE); progressBar.setProgress(0); if (furl != null) { sendImageMessage(furl, fbm); } else { Toast.makeText(getActivity(), getString(R.string.error), Toast.LENGTH_LONG).show(); } } }); } } }); uploadThread.start(); }
From source file:com.android.launcher2.AsyncTaskCallback.java
private boolean beginDraggingWidget(View v) { mDraggingWidget = true;/* w ww . j a v a 2 s . c o m*/ // Get the widget preview as the drag representation ImageView image = (ImageView) v.findViewById(R.id.widget_preview); PendingAddItemInfo createItemInfo = (PendingAddItemInfo) v.getTag(); // If the ImageView doesn't have a drawable yet, the widget preview hasn't been loaded and // we abort the drag. if (image.getDrawable() == null) { mDraggingWidget = false; return false; } // Compose the drag image Bitmap preview; Bitmap outline; float scale = 1f; if (createItemInfo instanceof PendingAddWidgetInfo) { // This can happen in some weird cases involving multi-touch. We can't start dragging // the widget if this is null, so we break out. if (mCreateWidgetInfo == null) { return false; } PendingAddWidgetInfo createWidgetInfo = mCreateWidgetInfo; createItemInfo = createWidgetInfo; int spanX = createItemInfo.spanX; int spanY = createItemInfo.spanY; int[] size = mLauncher.getWorkspace().estimateItemSize(spanX, spanY, createWidgetInfo, true); FastBitmapDrawable previewDrawable = (FastBitmapDrawable) image.getDrawable(); float minScale = 1.25f; int maxWidth, maxHeight; maxWidth = Math.min((int) (previewDrawable.getIntrinsicWidth() * minScale), size[0]); maxHeight = Math.min((int) (previewDrawable.getIntrinsicHeight() * minScale), size[1]); preview = getWidgetPreview(createWidgetInfo.componentName, createWidgetInfo.previewImage, createWidgetInfo.icon, spanX, spanY, maxWidth, maxHeight); // Determine the image view drawable scale relative to the preview float[] mv = new float[9]; Matrix m = new Matrix(); m.setRectToRect(new RectF(0f, 0f, (float) preview.getWidth(), (float) preview.getHeight()), new RectF(0f, 0f, (float) previewDrawable.getIntrinsicWidth(), (float) previewDrawable.getIntrinsicHeight()), Matrix.ScaleToFit.START); m.getValues(mv); scale = (float) mv[0]; } else { PendingAddShortcutInfo createShortcutInfo = (PendingAddShortcutInfo) v.getTag(); Drawable icon = mIconCache.getFullResIcon(createShortcutInfo.shortcutActivityInfo); preview = Bitmap.createBitmap(icon.getIntrinsicWidth(), icon.getIntrinsicHeight(), Bitmap.Config.ARGB_8888); mCanvas.setBitmap(preview); mCanvas.save(); renderDrawableToBitmap(icon, preview, 0, 0, icon.getIntrinsicWidth(), icon.getIntrinsicHeight()); mCanvas.restore(); mCanvas.setBitmap(null); createItemInfo.spanX = createItemInfo.spanY = 1; } // Don't clip alpha values for the drag outline if we're using the default widget preview boolean clipAlpha = !(createItemInfo instanceof PendingAddWidgetInfo && (((PendingAddWidgetInfo) createItemInfo).previewImage == 0)); // Save the preview for the outline generation, then dim the preview outline = Bitmap.createScaledBitmap(preview, preview.getWidth(), preview.getHeight(), false); // Start the drag mLauncher.lockScreenOrientation(); mLauncher.getWorkspace().onDragStartedWithItem(createItemInfo, outline, clipAlpha); mDragController.startDrag(image, preview, this, createItemInfo, DragController.DRAG_ACTION_COPY, null, scale); outline.recycle(); preview.recycle(); return true; }
From source file:com.fabernovel.alertevoirie.ReportDetailsActivity.java
private void setPictureToImageView(String pictureName, ImageView imageView) { Bitmap picture = null;/*from w w w.j av a2 s .c o m*/ try { InputStream in = openFileInput(pictureName); picture = BitmapFactory.decodeStream(in); in.close(); LayerDrawable d = (LayerDrawable) getResources().getDrawable(R.drawable.editable_picture_frame); if (picture.getHeight() > picture.getWidth()) { Matrix m = new Matrix(); m.postRotate(-90); picture = Bitmap.createBitmap(picture, 0, 0, picture.getWidth(), picture.getHeight(), m, true); } picture = Bitmap.createScaledBitmap(picture, d.getIntrinsicWidth(), d.getIntrinsicHeight(), true); d.setDrawableByLayerId(R.id.picture, new BitmapDrawable(picture)); imageView.setImageDrawable(d); if (!hasPic) hasPic = (imageView.getId() == R.id.ImageView_far); // WTF ? // if (hasPic && (imageView.getId() == R.id.ImageView_far)) { // loadZoom(); // } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } }
From source file:com.bai.android.ui.OtherActivity.java
private void rotateImageIfNecessary(int rotation) { if (rotation != 0) { // if image was stored rotated - rotate to normal Matrix matrix = new Matrix(); matrix.postRotate(rotation);// www . j ava 2 s . c o m avatarPicture = Bitmap.createBitmap(avatarPicture, 0, 0, avatarPicture.getWidth(), avatarPicture.getHeight(), matrix, true); } else { // not necessary to rotate image //avatarPicture = Bitmap.createScaledBitmap(avatarPicture, avatarPicture.getWidth(), avatarPicture.getHeight(), true); } }
From source file:com.almalence.opencam.SavingService.java
public void saveResultPictureNew(long sessionID) { if (ApplicationScreen.getForceFilename() != null) { saveResultPicture(sessionID);/* w ww. ja v a 2 s. c om*/ return; } initSavingPrefs(); SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()); // save fused result try { DocumentFile saveDir = getSaveDirNew(false); int imagesAmount = Integer .parseInt(getFromSharedMem("amountofresultframes" + Long.toString(sessionID))); if (imagesAmount == 0) imagesAmount = 1; int imageIndex = 0; String sImageIndex = getFromSharedMem("resultframeindex" + Long.toString(sessionID)); if (sImageIndex != null) imageIndex = Integer.parseInt(getFromSharedMem("resultframeindex" + Long.toString(sessionID))); if (imageIndex != 0) imagesAmount = 1; ContentValues values = null; boolean hasDNGResult = false; for (int i = 1; i <= imagesAmount; i++) { hasDNGResult = false; String format = getFromSharedMem("resultframeformat" + i + Long.toString(sessionID)); if (format != null && format.equalsIgnoreCase("dng")) hasDNGResult = true; String idx = ""; if (imagesAmount != 1) idx += "_" + ((format != null && !format.equalsIgnoreCase("dng") && hasDNGResult) ? i - imagesAmount / 2 : i); String modeName = getFromSharedMem("modeSaveName" + Long.toString(sessionID)); // define file name format. from settings! String fileFormat = getExportFileName(modeName); fileFormat += idx; DocumentFile file = null; if (ApplicationScreen.getForceFilename() == null) { if (hasDNGResult) { file = saveDir.createFile("image/x-adobe-dng", fileFormat + ".dng"); } else { file = saveDir.createFile("image/jpeg", fileFormat); } } else { file = DocumentFile.fromFile(ApplicationScreen.getForceFilename()); } // Create buffer image to deal with exif tags. OutputStream os = null; File bufFile = new File(getApplicationContext().getFilesDir(), "buffer.jpeg"); try { os = new FileOutputStream(bufFile); } catch (Exception e) { e.printStackTrace(); } // Take only one result frame from several results // Used for PreShot plugin that may decide which result to save if (imagesAmount == 1 && imageIndex != 0) { i = imageIndex; //With changed frame index we have to get appropriate frame format format = getFromSharedMem("resultframeformat" + i + Long.toString(sessionID)); } String resultOrientation = getFromSharedMem( "resultframeorientation" + i + Long.toString(sessionID)); int orientation = 0; if (resultOrientation != null) orientation = Integer.parseInt(resultOrientation); String resultMirrored = getFromSharedMem("resultframemirrored" + i + Long.toString(sessionID)); Boolean cameraMirrored = false; if (resultMirrored != null) cameraMirrored = Boolean.parseBoolean(resultMirrored); int x = Integer.parseInt(getFromSharedMem("saveImageHeight" + Long.toString(sessionID))); int y = Integer.parseInt(getFromSharedMem("saveImageWidth" + Long.toString(sessionID))); if (orientation == 0 || orientation == 180 || (format != null && format.equalsIgnoreCase("dng"))) { x = Integer.valueOf(getFromSharedMem("saveImageWidth" + Long.toString(sessionID))); y = Integer.valueOf(getFromSharedMem("saveImageHeight" + Long.toString(sessionID))); } Boolean writeOrientationTag = true; String writeOrientTag = getFromSharedMem("writeorientationtag" + Long.toString(sessionID)); if (writeOrientTag != null) writeOrientationTag = Boolean.parseBoolean(writeOrientTag); if (format != null && format.equalsIgnoreCase("jpeg")) {// if result in jpeg format if (os != null) { byte[] frame = SwapHeap.SwapFromHeap( Integer.parseInt(getFromSharedMem("resultframe" + i + Long.toString(sessionID))), Integer.parseInt( getFromSharedMem("resultframelen" + i + Long.toString(sessionID)))); os.write(frame); try { os.close(); } catch (Exception e) { e.printStackTrace(); } } } else if (format != null && format.equalsIgnoreCase("dng") && Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { saveDNGPicture(i, sessionID, os, x, y, orientation, cameraMirrored); } else {// if result in nv21 format int yuv = Integer.parseInt(getFromSharedMem("resultframe" + i + Long.toString(sessionID))); com.almalence.YuvImage out = new com.almalence.YuvImage(yuv, ImageFormat.NV21, x, y, null); Rect r; String res = getFromSharedMem("resultfromshared" + Long.toString(sessionID)); if ((null == res) || "".equals(res) || "true".equals(res)) { // to avoid problems with SKIA int cropHeight = out.getHeight() - out.getHeight() % 16; r = new Rect(0, 0, out.getWidth(), cropHeight); } else { if (null == getFromSharedMem("resultcrop0" + Long.toString(sessionID))) { // to avoid problems with SKIA int cropHeight = out.getHeight() - out.getHeight() % 16; r = new Rect(0, 0, out.getWidth(), cropHeight); } else { int crop0 = Integer .parseInt(getFromSharedMem("resultcrop0" + Long.toString(sessionID))); int crop1 = Integer .parseInt(getFromSharedMem("resultcrop1" + Long.toString(sessionID))); int crop2 = Integer .parseInt(getFromSharedMem("resultcrop2" + Long.toString(sessionID))); int crop3 = Integer .parseInt(getFromSharedMem("resultcrop3" + Long.toString(sessionID))); r = new Rect(crop0, crop1, crop0 + crop2, crop1 + crop3); } } jpegQuality = Integer.parseInt(prefs.getString(ApplicationScreen.sJPEGQualityPref, "95")); if (!out.compressToJpeg(r, jpegQuality, os)) { ApplicationScreen.getMessageHandler() .sendEmptyMessage(ApplicationInterface.MSG_EXPORT_FINISHED_IOEXCEPTION); return; } SwapHeap.FreeFromHeap(yuv); } String orientation_tag = String.valueOf(0); // int sensorOrientation = CameraController.getSensorOrientation(CameraController.getCameraIndex()); // int displayOrientation = CameraController.getDisplayOrientation(); //// sensorOrientation = (360 + sensorOrientation + (cameraMirrored ? -displayOrientation //// : displayOrientation)) % 360; // if (cameraMirrored) displayOrientation = -displayOrientation; // // // Calculate desired JPEG orientation relative to camera orientation to make // // the image upright relative to the device orientation // orientation = (sensorOrientation + displayOrientation + 360) % 360; switch (orientation) { default: case 0: orientation_tag = String.valueOf(0); break; case 90: orientation_tag = cameraMirrored ? String.valueOf(270) : String.valueOf(90); break; case 180: orientation_tag = String.valueOf(180); break; case 270: orientation_tag = cameraMirrored ? String.valueOf(90) : String.valueOf(270); break; } int exif_orientation = ExifInterface.ORIENTATION_NORMAL; if (writeOrientationTag) { switch ((orientation + 360) % 360) { default: case 0: exif_orientation = ExifInterface.ORIENTATION_NORMAL; break; case 90: exif_orientation = cameraMirrored ? ExifInterface.ORIENTATION_ROTATE_270 : ExifInterface.ORIENTATION_ROTATE_90; break; case 180: exif_orientation = ExifInterface.ORIENTATION_ROTATE_180; break; case 270: exif_orientation = cameraMirrored ? ExifInterface.ORIENTATION_ROTATE_90 : ExifInterface.ORIENTATION_ROTATE_270; break; } } else { switch ((additionalRotationValue + 360) % 360) { default: case 0: exif_orientation = ExifInterface.ORIENTATION_NORMAL; break; case 90: exif_orientation = cameraMirrored ? ExifInterface.ORIENTATION_ROTATE_270 : ExifInterface.ORIENTATION_ROTATE_90; break; case 180: exif_orientation = ExifInterface.ORIENTATION_ROTATE_180; break; case 270: exif_orientation = cameraMirrored ? ExifInterface.ORIENTATION_ROTATE_90 : ExifInterface.ORIENTATION_ROTATE_270; break; } } if (!enableExifTagOrientation) exif_orientation = ExifInterface.ORIENTATION_NORMAL; values = new ContentValues(); values.put(ImageColumns.TITLE, file.getName().substring(0, file.getName().lastIndexOf(".") >= 0 ? file.getName().lastIndexOf(".") : file.getName().length())); values.put(ImageColumns.DISPLAY_NAME, file.getName()); values.put(ImageColumns.DATE_TAKEN, System.currentTimeMillis()); values.put(ImageColumns.MIME_TYPE, "image/jpeg"); if (enableExifTagOrientation) { if (writeOrientationTag) { values.put(ImageColumns.ORIENTATION, String.valueOf( (Integer.parseInt(orientation_tag) + additionalRotationValue + 360) % 360)); } else { values.put(ImageColumns.ORIENTATION, String.valueOf((additionalRotationValue + 360) % 360)); } } else { values.put(ImageColumns.ORIENTATION, String.valueOf(0)); } String filePath = file.getName(); // If we able to get File object, than get path from it. // fileObject should not be null for files on phone memory. File fileObject = Util.getFileFromDocumentFile(file); if (fileObject != null) { filePath = fileObject.getAbsolutePath(); values.put(ImageColumns.DATA, filePath); } else { // This case should typically happen for files saved to SD // card. String documentPath = Util.getAbsolutePathFromDocumentFile(file); values.put(ImageColumns.DATA, documentPath); } if (!enableExifTagOrientation && !hasDNGResult) { Matrix matrix = new Matrix(); if (writeOrientationTag && (orientation + additionalRotationValue) != 0) { matrix.postRotate((orientation + additionalRotationValue + 360) % 360); rotateImage(bufFile, matrix); } else if (!writeOrientationTag && additionalRotationValue != 0) { matrix.postRotate((additionalRotationValue + 360) % 360); rotateImage(bufFile, matrix); } } if (useGeoTaggingPrefExport) { Location l = MLocation.getLocation(getApplicationContext()); if (l != null) { double lat = l.getLatitude(); double lon = l.getLongitude(); boolean hasLatLon = (lat != 0.0d) || (lon != 0.0d); if (hasLatLon) { values.put(ImageColumns.LATITUDE, l.getLatitude()); values.put(ImageColumns.LONGITUDE, l.getLongitude()); } } } File modifiedFile = null; if (!hasDNGResult) { modifiedFile = saveExifTags(bufFile, sessionID, i, x, y, exif_orientation, useGeoTaggingPrefExport, enableExifTagOrientation); } if (modifiedFile != null) { bufFile.delete(); if (ApplicationScreen.getForceFilename() == null) { // Copy buffer image with exif tags into result file. InputStream is = null; int len; byte[] buf = new byte[4096]; try { os = getApplicationContext().getContentResolver().openOutputStream(file.getUri()); is = new FileInputStream(modifiedFile); while ((len = is.read(buf)) > 0) { os.write(buf, 0, len); } is.close(); os.close(); } catch (IOException eIO) { eIO.printStackTrace(); final IOException eIOFinal = eIO; ApplicationScreen.instance.runOnUiThread(new Runnable() { public void run() { Toast.makeText(MainScreen.getMainContext(), "Error ocurred:" + eIOFinal.getLocalizedMessage(), Toast.LENGTH_LONG) .show(); } }); } catch (Exception e) { e.printStackTrace(); } } else { copyToForceFileName(modifiedFile); } modifiedFile.delete(); } else { // Copy buffer image into result file. InputStream is = null; int len; byte[] buf = new byte[4096]; try { os = getApplicationContext().getContentResolver().openOutputStream(file.getUri()); is = new FileInputStream(bufFile); while ((len = is.read(buf)) > 0) { os.write(buf, 0, len); } is.close(); os.close(); } catch (Exception e) { e.printStackTrace(); } bufFile.delete(); } Uri uri = getApplicationContext().getContentResolver().insert(Images.Media.EXTERNAL_CONTENT_URI, values); broadcastNewPicture(uri); } ApplicationScreen.getMessageHandler().sendEmptyMessage(ApplicationInterface.MSG_EXPORT_FINISHED); } catch (IOException e) { e.printStackTrace(); ApplicationScreen.getMessageHandler() .sendEmptyMessage(ApplicationInterface.MSG_EXPORT_FINISHED_IOEXCEPTION); return; } catch (Exception e) { e.printStackTrace(); ApplicationScreen.getMessageHandler().sendEmptyMessage(ApplicationInterface.MSG_EXPORT_FINISHED); } }
From source file:com.kjsaw.alcosys.ibacapp.IBAC.java
private Bitmap processBitmap(Bitmap orginalBitmap, int degrees) { Matrix matrixRotate = new Matrix(); matrixRotate.setRotate(degrees, (float) orginalBitmap.getWidth() / 2, (float) orginalBitmap.getHeight() / 2); Bitmap rotatedBitmap = Bitmap.createBitmap(orginalBitmap, 0, 0, orginalBitmap.getWidth(), orginalBitmap.getHeight(), matrixRotate, true); int width = rotatedBitmap.getWidth(); int height = rotatedBitmap.getHeight(); int newWidth = 240; int newHeight = 320; float scaleWidth = ((float) newWidth) / width; float scaleHeight = ((float) newHeight) / height; Matrix matrixResize = new Matrix(); if (Session.isFacingCamera) { matrixResize.setScale(-1, 1);// reversal }//from ww w . j av a2 s. c o m matrixResize.postScale(scaleWidth, scaleHeight); return Bitmap.createBitmap(rotatedBitmap, 0, 0, width, height, matrixResize, true); }
From source file:android.support.v17.leanback.app.BackgroundManager.java
/** * Sets the given bitmap into the background. When using setBitmap to set the * background, the provided bitmap will be scaled and cropped to correctly * fit within the dimensions of the view. The timing for when this becomes * visible in the app is undefined and may take place after a small delay. *//* w w w .ja v a 2s. co m*/ public void setBitmap(Bitmap bitmap) { if (DEBUG) { Log.v(TAG, "setBitmap " + bitmap); } if (bitmap == null) { setDrawableInternal(null); return; } if (bitmap.getWidth() <= 0 || bitmap.getHeight() <= 0) { if (DEBUG) { Log.v(TAG, "invalid bitmap width or height"); } return; } Matrix matrix = null; if ((bitmap.getWidth() != mWidthPx || bitmap.getHeight() != mHeightPx)) { int dwidth = bitmap.getWidth(); int dheight = bitmap.getHeight(); float scale; // Scale proportionately to fit width and height. if (dwidth * mHeightPx > mWidthPx * dheight) { scale = (float) mHeightPx / (float) dheight; } else { scale = (float) mWidthPx / (float) dwidth; } int subX = Math.min((int) (mWidthPx / scale), dwidth); int dx = Math.max(0, (dwidth - subX) / 2); matrix = new Matrix(); matrix.setScale(scale, scale); matrix.preTranslate(-dx, 0); if (DEBUG) Log.v(TAG, "original image size " + bitmap.getWidth() + "x" + bitmap.getHeight() + " scale " + scale + " dx " + dx); } BitmapDrawable bitmapDrawable = new BitmapDrawable(mContext.getResources(), bitmap, matrix); setDrawableInternal(bitmapDrawable); }
From source file:br.com.viniciuscr.notification2android.mediaPlayer.MusicUtils.java
static void setBackground(View v, Bitmap bm) { if (bm == null) { v.setBackgroundResource(0);/*from www . jav a 2s . c o m*/ return; } int vwidth = v.getWidth(); int vheight = v.getHeight(); int bwidth = bm.getWidth(); int bheight = bm.getHeight(); float scalex = (float) vwidth / bwidth; float scaley = (float) vheight / bheight; float scale = Math.max(scalex, scaley) * 1.3f; Bitmap.Config config = Bitmap.Config.ARGB_8888; Bitmap bg = Bitmap.createBitmap(vwidth, vheight, config); Canvas c = new Canvas(bg); Paint paint = new Paint(); paint.setAntiAlias(true); paint.setFilterBitmap(true); ColorMatrix greymatrix = new ColorMatrix(); greymatrix.setSaturation(0); ColorMatrix darkmatrix = new ColorMatrix(); darkmatrix.setScale(.3f, .3f, .3f, 1.0f); greymatrix.postConcat(darkmatrix); ColorFilter filter = new ColorMatrixColorFilter(greymatrix); paint.setColorFilter(filter); Matrix matrix = new Matrix(); matrix.setTranslate(-bwidth / 2, -bheight / 2); // move bitmap center to origin matrix.postRotate(10); matrix.postScale(scale, scale); matrix.postTranslate(vwidth / 2, vheight / 2); // Move bitmap center to view center c.drawBitmap(bm, matrix, paint); v.setBackgroundDrawable(new BitmapDrawable(bg)); }
From source file:com.ape.camera2raw.Camera2RawFragment.java
/** * Configure the necessary {@link Matrix} transformation to `mTextureView`, * and start/restart the preview capture session if necessary. * <p/>//from w ww. j a v a2 s .c o m * This method should be called after the camera state has been initialized in * setUpCameraOutputs. * * @param viewWidth The width of `mTextureView` * @param viewHeight The height of `mTextureView` */ private void configureTransform(int viewWidth, int viewHeight) { Activity activity = getActivity(); synchronized (mCameraStateLock) { if (null == mTextureView || null == activity) { return; } StreamConfigurationMap map = mCharacteristics .get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP); // For still image captures, we always use the largest available size. Size largestJpeg = Collections.max(Arrays.asList(map.getOutputSizes(ImageFormat.JPEG)), new CompareSizesByArea()); // Find the rotation of the device relative to the native device orientation. int deviceRotation = activity.getWindowManager().getDefaultDisplay().getRotation(); Point displaySize = new Point(); activity.getWindowManager().getDefaultDisplay().getSize(displaySize); // Find the rotation of the device relative to the camera sensor's orientation. int totalRotation = sensorToDeviceRotation(mCharacteristics, deviceRotation); // Swap the view dimensions for calculation as needed if they are rotated relative to // the sensor. boolean swappedDimensions = totalRotation == 90 || totalRotation == 270; int rotatedViewWidth = viewWidth; int rotatedViewHeight = viewHeight; int maxPreviewWidth = displaySize.x; int maxPreviewHeight = displaySize.y; if (swappedDimensions) { rotatedViewWidth = viewHeight; rotatedViewHeight = viewWidth; maxPreviewWidth = displaySize.y; maxPreviewHeight = displaySize.x; } // Preview should not be larger than display size and 1080p. if (maxPreviewWidth > MAX_PREVIEW_WIDTH) { maxPreviewWidth = MAX_PREVIEW_WIDTH; } if (maxPreviewHeight > MAX_PREVIEW_HEIGHT) { maxPreviewHeight = MAX_PREVIEW_HEIGHT; } // Find the best preview size for these view dimensions and configured JPEG size. Size previewSize = chooseOptimalSize(map.getOutputSizes(SurfaceTexture.class), rotatedViewWidth, rotatedViewHeight, maxPreviewWidth, maxPreviewHeight, largestJpeg); if (swappedDimensions) { mTextureView.setAspectRatio(previewSize.getHeight(), previewSize.getWidth()); } else { mTextureView.setAspectRatio(previewSize.getWidth(), previewSize.getHeight()); } // Find rotation of device in degrees (reverse device orientation for front-facing // cameras). int rotation = (mCharacteristics .get(CameraCharacteristics.LENS_FACING) == CameraCharacteristics.LENS_FACING_FRONT) ? (360 + ORIENTATIONS.get(deviceRotation)) % 360 : (360 - ORIENTATIONS.get(deviceRotation)) % 360; Matrix matrix = new Matrix(); RectF viewRect = new RectF(0, 0, viewWidth, viewHeight); RectF bufferRect = new RectF(0, 0, previewSize.getHeight(), previewSize.getWidth()); float centerX = viewRect.centerX(); float centerY = viewRect.centerY(); // Initially, output stream images from the Camera2 API will be rotated to the native // device orientation from the sensor's orientation, and the TextureView will default to // scaling these buffers to fill it's view bounds. If the aspect ratios and relative // orientations are correct, this is fine. // // However, if the device orientation has been rotated relative to its native // orientation so that the TextureView's dimensions are swapped relative to the // native device orientation, we must do the following to ensure the output stream // images are not incorrectly scaled by the TextureView: // - Undo the scale-to-fill from the output buffer's dimensions (i.e. its dimensions // in the native device orientation) to the TextureView's dimension. // - Apply a scale-to-fill from the output buffer's rotated dimensions // (i.e. its dimensions in the current device orientation) to the TextureView's // dimensions. // - Apply the rotation from the native device orientation to the current device // rotation. if (Surface.ROTATION_90 == deviceRotation || Surface.ROTATION_270 == deviceRotation) { bufferRect.offset(centerX - bufferRect.centerX(), centerY - bufferRect.centerY()); matrix.setRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.FILL); float scale = Math.max((float) viewHeight / previewSize.getHeight(), (float) viewWidth / previewSize.getWidth()); matrix.postScale(scale, scale, centerX, centerY); } matrix.postRotate(rotation, centerX, centerY); mTextureView.setTransform(matrix); // Start or restart the active capture session if the preview was initialized or // if its aspect ratio changed significantly. if (mPreviewSize == null || !checkAspectsEqual(previewSize, mPreviewSize)) { mPreviewSize = previewSize; if (mState != STATE_CLOSED) { createCameraPreviewSessionLocked(); } } } }