!9316 [MS][LITE]20201123 detection demo app program freeze after select 'PHOTO'
From: @sishuikang Reviewed-by: @zhanghaibo5,@zhang_xue_tong Signed-off-by: @zhanghaibo5pull/9316/MERGE
mindspore-ci-bot
5 years ago
committed by
Gitee
commit
af9be6bd69
@ -0,0 +1,151 @@
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/**
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* Copyright 2020 Huawei Technologies Co., Ltd
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* <p>
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* <p>
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* http://www.apache.org/licenses/LICENSE-2.0
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* <p>
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.mindspore.hiobject.help;
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import android.app.Activity;
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import android.database.Cursor;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.graphics.Matrix;
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import android.media.ExifInterface;
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import android.net.Uri;
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import android.provider.MediaStore;
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import android.util.Log;
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import java.io.IOException;
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import java.io.InputStream;
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public class BitmapUtils {
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private static final String TAG = "BitmapUtils";
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public static void recycleBitmap(Bitmap... bitmaps) {
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for (Bitmap bitmap : bitmaps) {
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if (bitmap != null && !bitmap.isRecycled()) {
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bitmap.recycle();
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bitmap = null;
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}
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}
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}
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private static String getImagePath(Activity activity, Uri uri) {
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String[] projection = {MediaStore.Images.Media.DATA};
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Cursor cursor = activity.managedQuery(uri, projection, null, null, null);
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int columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
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cursor.moveToFirst();
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return cursor.getString(columnIndex);
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}
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public static Bitmap loadFromPath(Activity activity, int id, int width, int height) {
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BitmapFactory.Options options = new BitmapFactory.Options();
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options.inJustDecodeBounds = true;
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InputStream is = activity.getResources().openRawResource(id);
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int sampleSize = calculateInSampleSize(options, width, height);
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options.inSampleSize = sampleSize;
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options.inJustDecodeBounds = false;
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return zoomImage(BitmapFactory.decodeStream(is), width, height);
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}
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public static Bitmap loadFromPath(Activity activity, Uri uri, int width, int height) {
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BitmapFactory.Options options = new BitmapFactory.Options();
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options.inJustDecodeBounds = true;
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String path = getImagePath(activity, uri);
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BitmapFactory.decodeFile(path, options);
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int sampleSize = calculateInSampleSize(options, width, height);
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options.inSampleSize = sampleSize;
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options.inJustDecodeBounds = false;
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Bitmap bitmap = zoomImage(BitmapFactory.decodeFile(path, options), width, height);
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return rotateBitmap(bitmap, getRotationAngle(path));
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}
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private static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {
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final int width = options.outWidth;
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final int height = options.outHeight;
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int inSampleSize = 1;
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if (height > reqHeight || width > reqWidth) {
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// Calculate height and required height scale.
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final int heightRatio = Math.round((float) height / (float) reqHeight);
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// Calculate width and required width scale.
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final int widthRatio = Math.round((float) width / (float) reqWidth);
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// Take the larger of the values.
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inSampleSize = heightRatio > widthRatio ? heightRatio : widthRatio;
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}
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return inSampleSize;
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}
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// Scale pictures to screen width.
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private static Bitmap zoomImage(Bitmap imageBitmap, int targetWidth, int maxHeight) {
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float scaleFactor =
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Math.max(
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(float) imageBitmap.getWidth() / (float) targetWidth,
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(float) imageBitmap.getHeight() / (float) maxHeight);
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Bitmap resizedBitmap =
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Bitmap.createScaledBitmap(
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imageBitmap,
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(int) (imageBitmap.getWidth() / scaleFactor),
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(int) (imageBitmap.getHeight() / scaleFactor),
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true);
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return resizedBitmap;
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}
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/**
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* Get the rotation angle of the photo.
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*
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* @param path photo path.
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* @return angle.
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*/
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public static int getRotationAngle(String path) {
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int rotation = 0;
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try {
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ExifInterface exifInterface = new ExifInterface(path);
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int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
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switch (orientation) {
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case ExifInterface.ORIENTATION_ROTATE_90:
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rotation = 90;
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break;
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case ExifInterface.ORIENTATION_ROTATE_180:
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rotation = 180;
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break;
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case ExifInterface.ORIENTATION_ROTATE_270:
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rotation = 270;
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break;
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default:
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break;
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}
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} catch (IOException e) {
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Log.e(TAG, "Failed to get rotation: " + e.getMessage());
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}
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return rotation;
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}
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public static Bitmap rotateBitmap(Bitmap bitmap, int angle) {
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Matrix matrix = new Matrix();
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matrix.postRotate(angle);
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Bitmap result = null;
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try {
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result = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
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} catch (OutOfMemoryError e) {
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Log.e(TAG, "Failed to rotate bitmap: " + e.getMessage());
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}
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if (result == null) {
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return bitmap;
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}
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return result;
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}
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}
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@ -0,0 +1,48 @@
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/**
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* Copyright 2020 Huawei Technologies Co., Ltd
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* <p>
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* <p>
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* http://www.apache.org/licenses/LICENSE-2.0
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* <p>
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.mindspore.hiobject.help;
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import android.content.Context;
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public class DisplayUtil {
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private DisplayUtil() {
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/* cannot be instantiated */
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throw new UnsupportedOperationException("cannot be instantiated");
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}
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public static int px2dip(Context context, float pxValue) {
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final float scale = context.getResources().getDisplayMetrics().density;
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return (int) (pxValue / scale + 0.5f);
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}
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public static int dip2px(Context context, float dipValue) {
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final float scale = context.getResources().getDisplayMetrics().density;
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return (int) (dipValue * scale + 0.5f);
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}
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public static int px2sp(Context context, float pxValue) {
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final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
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return (int) (pxValue / fontScale + 0.5f);
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}
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public static int sp2px(Context context, float spValue) {
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final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
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return (int) (spValue * fontScale + 0.5f);
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}
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}
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After Width: | Height: | Size: 2.0 KiB |
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After Width: | Height: | Size: 3.4 KiB |
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After Width: | Height: | Size: 75 KiB |
@ -1,13 +1,15 @@
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<?xml version="1.0" encoding="utf-8"?>
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<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools"
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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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tools:context=".objectdetect.PhotoActivity">
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android:fitsSystemWindows="true"
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android:keepScreenOn="true"
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android:orientation="vertical">
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<ImageView
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android:scaleType="fitXY"
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android:id="@+id/img_photo"
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android:layout_width="match_parent"
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android:layout_height="match_parent"/>
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</androidx.constraintlayout.widget.ConstraintLayout>
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_centerInParent="true"
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android:scaleType="fitXY" />
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</RelativeLayout>
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