mirror of
https://github.com/SimpleMobileTools/Simple-Camera.git
synced 2025-06-27 09:02:59 +02:00
move photo processing in the background
This commit is contained in:
tibbi
@@ -0,0 +1,105 @@
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package com.simplemobiletools.camera;
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import android.content.Context;
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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.media.MediaScannerConnection;
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import android.os.AsyncTask;
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import android.os.Environment;
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import android.util.Log;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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public class PhotoProcessor extends AsyncTask<byte[], Void, Void> {
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private static final String TAG = PhotoProcessor.class.getSimpleName();
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private static Context context;
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public PhotoProcessor(Context cxt) {
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context = cxt;
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}
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@Override
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protected Void doInBackground(byte[]... params) {
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final File photoFile = getOutputMediaFile();
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if (photoFile == null) {
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return null;
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}
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try {
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final byte[] data = params[0];
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final FileOutputStream fos = new FileOutputStream(photoFile);
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Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
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bitmap = setBitmapRotation(bitmap, photoFile.toString());
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bitmap = setAspectRatio(bitmap);
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bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
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fos.close();
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scanPhoto(photoFile);
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} catch (FileNotFoundException e) {
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Log.d(TAG, "onPictureTaken file not found: " + e.getMessage());
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} catch (IOException e) {
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Log.e(TAG, "onPictureTaken ioexception " + e.getMessage());
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}
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return null;
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}
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private static File getOutputMediaFile() {
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final String appName = context.getResources().getString(R.string.app_name);
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final File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), appName);
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if (!mediaStorageDir.exists()) {
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if (!mediaStorageDir.mkdirs()) {
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return null;
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}
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}
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final String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
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return new File(mediaStorageDir.getPath() + File.separator + "IMG_" + timeStamp + ".jpg");
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}
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private Bitmap setBitmapRotation(Bitmap bitmap, String path) throws IOException {
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final ExifInterface exif = new ExifInterface(path);
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final String orientation = exif.getAttribute(ExifInterface.TAG_ORIENTATION);
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if (orientation.equalsIgnoreCase("6")) {
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bitmap = rotateImage(bitmap, 90);
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} else if (orientation.equalsIgnoreCase("8")) {
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bitmap = rotateImage(bitmap, 270);
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} else if (orientation.equalsIgnoreCase("3")) {
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bitmap = rotateImage(bitmap, 180);
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} else if (orientation.equalsIgnoreCase("0")) {
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bitmap = rotateImage(bitmap, 90);
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}
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return bitmap;
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}
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public static Bitmap rotateImage(Bitmap source, float angle) {
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final Matrix matrix = new Matrix();
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matrix.postRotate(angle);
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return Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), matrix, true);
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}
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private Bitmap setAspectRatio(Bitmap bitmap) {
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final double wantedAspect = (double) 16 / (double) 9;
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final double bmpWidth = bitmap.getWidth();
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final double bmpHeight = bitmap.getHeight();
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if (bmpHeight / bmpWidth < wantedAspect) {
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final double extraWidth = bmpWidth - (bmpHeight / wantedAspect);
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final int startX = (int) (extraWidth / 2);
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return Bitmap.createBitmap(bitmap, startX, 0, (int) (bmpWidth - extraWidth), (int) bmpHeight);
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}
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return bitmap;
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}
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private void scanPhoto(File photo) {
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final String[] photoPath = {photo.getAbsolutePath()};
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MediaScannerConnection.scanFile(context, photoPath, null, null);
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}
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}
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@@ -1,14 +1,9 @@
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package com.simplemobiletools.camera;
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import android.content.Context;
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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.graphics.Rect;
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import android.hardware.Camera;
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import android.media.ExifInterface;
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import android.media.MediaScannerConnection;
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import android.os.Environment;
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import android.os.Handler;
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import android.util.Log;
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import android.view.MotionEvent;
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import android.view.SurfaceHolder;
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@@ -16,40 +11,34 @@ import android.view.SurfaceView;
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import android.view.View;
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import android.view.ViewGroup;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.text.SimpleDateFormat;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.List;
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public class Preview extends ViewGroup implements SurfaceHolder.Callback, View.OnTouchListener {
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private static final String TAG = Preview.class.getSimpleName();
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private static final int MEDIA_TYPE_IMAGE = 1;
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private static final int FOCUS_AREA_SIZE = 200;
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private static final int PHOTO_PREVIEW_LENGTH = 1000;
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private static Context context;
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private static SurfaceHolder surfaceHolder;
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private static Camera camera;
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private static List<Camera.Size> supportedPreviewSizes;
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private static SurfaceView surfaceView;
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private static Camera.Size previewSize;
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private static boolean canTakePicture;
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public Preview(Context cxt) {
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super(cxt);
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context = cxt;
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}
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public Preview(Context cxt, SurfaceView sv) {
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super(cxt);
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context = cxt;
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surfaceView = sv;
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surfaceHolder = surfaceView.getHolder();
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surfaceHolder.addCallback(this);
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surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
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canTakePicture = true;
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setOnTouchListener(this);
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}
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@@ -73,90 +62,27 @@ public class Preview extends ViewGroup implements SurfaceHolder.Callback, View.O
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}
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public void takePicture() {
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camera.takePicture(null, null, takePictureCallback);
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if (canTakePicture) {
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camera.takePicture(null, null, takePictureCallback);
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}
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canTakePicture = false;
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}
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private Camera.PictureCallback takePictureCallback = new Camera.PictureCallback() {
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@Override
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public void onPictureTaken(byte[] data, Camera camera) {
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final File photoFile = getOutputMediaFile(MEDIA_TYPE_IMAGE);
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if (photoFile == null) {
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return;
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}
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public void onPictureTaken(byte[] data, Camera cam) {
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new Handler().postDelayed(new Runnable() {
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@Override
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public void run() {
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camera.startPreview();
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canTakePicture = true;
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}
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}, PHOTO_PREVIEW_LENGTH);
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try {
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final FileOutputStream fos = new FileOutputStream(photoFile);
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Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
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bitmap = setBitmapRotation(bitmap, photoFile.toString());
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bitmap = setAspectRatio(bitmap);
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bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
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fos.close();
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scanPhoto(photoFile);
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} catch (FileNotFoundException e) {
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Log.d(TAG, "onPictureTaken file not found: " + e.getMessage());
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} catch (IOException e) {
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Log.e(TAG, "onPictureTaken ioexception " + e.getMessage());
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}
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new PhotoProcessor(getContext()).execute(data);
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}
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};
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private static File getOutputMediaFile(int type) {
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final String appName = context.getResources().getString(R.string.app_name);
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final File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), appName);
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if (!mediaStorageDir.exists()) {
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if (!mediaStorageDir.mkdirs()) {
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return null;
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}
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}
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final String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
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if (type == MEDIA_TYPE_IMAGE) {
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return new File(mediaStorageDir.getPath() + File.separator + "IMG_" + timeStamp + ".jpg");
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}
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return null;
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}
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private Bitmap setBitmapRotation(Bitmap bitmap, String path) throws IOException {
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final ExifInterface exif = new ExifInterface(path);
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final String orientation = exif.getAttribute(ExifInterface.TAG_ORIENTATION);
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if (orientation.equalsIgnoreCase("6")) {
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bitmap = rotateImage(bitmap, 90);
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} else if (orientation.equalsIgnoreCase("8")) {
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bitmap = rotateImage(bitmap, 270);
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} else if (orientation.equalsIgnoreCase("3")) {
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bitmap = rotateImage(bitmap, 180);
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} else if (orientation.equalsIgnoreCase("0")) {
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bitmap = rotateImage(bitmap, 90);
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}
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return bitmap;
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}
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public static Bitmap rotateImage(Bitmap source, float angle) {
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final Matrix matrix = new Matrix();
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matrix.postRotate(angle);
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return Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), matrix, true);
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}
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private Bitmap setAspectRatio(Bitmap bitmap) {
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final double wantedAspect = (double) 16 / (double) 9;
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final double bmpWidth = bitmap.getWidth();
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final double bmpHeight = bitmap.getHeight();
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if (bmpHeight / bmpWidth < wantedAspect) {
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final double extraWidth = bmpWidth - (bmpHeight / wantedAspect);
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final int startX = (int) (extraWidth / 2);
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return Bitmap.createBitmap(bitmap, startX, 0, (int) (bmpWidth - extraWidth), (int) bmpHeight);
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}
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return bitmap;
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}
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private void scanPhoto(File photo) {
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final String[] photoPath = {photo.getAbsolutePath()};
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MediaScannerConnection.scanFile(context, photoPath, null, null);
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}
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private void focusArea(MotionEvent event) {
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if (camera == null)
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return;
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