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@ferrygun ferrygun/Mltext.java Secret
Created Jan 16, 2019

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package com.neutrinos.mltextplugin;
import org.apache.cordova.CallbackContext;
import org.apache.cordova.CordovaPlugin;
import org.apache.cordova.PluginResult;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.Manifest;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Point;
import android.graphics.Rect;
import android.net.Uri;
import android.provider.MediaStore;
import android.support.annotation.NonNull;
import android.util.Base64;
import android.util.Log;
import android.util.SparseArray;
import com.google.android.gms.dynamic.IFragmentWrapper;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.vision.Frame;
import com.google.android.gms.vision.text.Text;
import com.google.android.gms.vision.text.TextBlock;
import com.google.android.gms.vision.text.TextRecognizer;
import com.google.firebase.ml.vision.FirebaseVision;
import com.google.firebase.ml.vision.barcode.FirebaseVisionBarcodeDetectorOptions;
import com.google.firebase.ml.vision.common.FirebaseVisionImage;
import com.google.firebase.ml.vision.text.FirebaseVisionText;
import com.google.firebase.ml.vision.text.FirebaseVisionTextRecognizer;
import com.google.firebase.ml.vision.text.RecognizedLanguage;
import com.google.firebase.ml.vision.barcode.FirebaseVisionBarcode;
import com.google.firebase.ml.vision.barcode.FirebaseVisionBarcodeDetector;
import java.io.FileNotFoundException;
import java.util.List;
import java.util.Objects;
public class Mltext extends CordovaPlugin {
//private static final int REQUEST_CODE = 99;
//FirebaseVisionImage image = FirebaseVisionImage.fromBitmap(bitmap);
private static final int NORMFILEURI = 0; // Make bitmap without compression using uri from picture library (NORMFILEURI & NORMNATIVEURI have same functionality in android)
private static final int NORMNATIVEURI = 1; // Make compressed bitmap using uri from picture library for faster ocr but might reduce accuracy (NORMFILEURI & NORMNATIVEURI have same functionality in android)
private static final int FASTFILEURI = 2; // Make uncompressed bitmap using uri from picture library (FASTFILEURI & FASTFILEURI have same functionality in android)
private static final int FASTNATIVEURI = 3; // Make compressed bitmap using uri from picture library for faster ocr but might reduce accuracy (FASTFILEURI & FASTFILEURI have same functionality in android)
private static final int BASE64 = 4; // send base64 image instead of uri
// private TextRecognizer detector;
// private static final int BLOCKS = 0; // return blocks with 2 new lines in between
// private static final int LINES = 1; // return lines with new line in between
// private static final int WORDS = 2; // return words with comma in between
// private static final int ALL = 3; // return all with new line in between
// // protected final static String[] permissions = { Manifest.permission.CAMERA,
// Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE };
@Override
public boolean execute(String action, final JSONArray args, final CallbackContext callbackContext) throws JSONException {
//callbackContext = callbackContext;
if (action.equals("getText")) {
cordova.getThreadPool().execute(new Runnable() {
public void run() {
try {
int argstype = NORMFILEURI;
// int argrtype = ALL;
String argimagestr = "";
try
{
Log.d("argsbeech", args.toString());
//JSONObject argsoption = args.getJSONObject(0);
//argstype = argsoption.getInt("imgType");
argstype = args.getInt(0);
argimagestr = args.getString(1);
// argrtype = args.getInt(1);
//argimagestr = argsoption.getString("imgSrc");
}
catch(Exception e)
{
callbackContext.error("Argument error");
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
Bitmap bitmap= null;
Uri uri = null;
if(argstype==NORMFILEURI || argstype==NORMNATIVEURI||argstype==FASTFILEURI || argstype==FASTNATIVEURI)
{
try
{
if(!argimagestr.trim().equals(""))
{
String imagestr = argimagestr;
// code block that allows this plugin to directly work with document scanner plugin and camera plugin
if(imagestr.substring(0,6).equals("file://"))
{
imagestr = argimagestr.replaceFirst("file://","");
}
//
uri = Uri.parse(imagestr);
if((argstype==NORMFILEURI || argstype==NORMNATIVEURI)&& uri != null) // normal ocr
{
bitmap = MediaStore.Images.Media.getBitmap(cordova.getActivity().getBaseContext().getContentResolver(), uri);
}
else if((argstype==FASTFILEURI || argstype==FASTNATIVEURI) && uri != null) //fast ocr (might be less accurate)
{
bitmap = decodeBitmapUri(cordova.getActivity().getBaseContext(), uri);
}
}
else
{
callbackContext.error("Image Uri or Base64 string is empty");
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
}
catch (Exception e)
{
e.printStackTrace();
callbackContext.error("Exception");
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
}
else if (argstype==BASE64)
{
if(!argimagestr.trim().equals(""))
{
byte[] decodedString = Base64.decode(argimagestr, Base64.DEFAULT);
bitmap = BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);
}
else
{
callbackContext.error("Image Uri or Base64 string is empty");
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
}
else
{
callbackContext.error("Non existent argument. Use 0, 1, 2 , 3 or 4");
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
FirebaseVisionTextRecognizer textRecognizer = FirebaseVision.getInstance()
.getOnDeviceTextRecognizer();
if (bitmap != null)
{
FirebaseVisionImage image = FirebaseVisionImage.fromBitmap(bitmap);
textRecognizer.processImage(image)
.addOnSuccessListener(result -> {
try
{
JSONObject resultobj = new JSONObject();
JSONObject blockobj = new JSONObject();
JSONObject lineobj = new JSONObject();
JSONObject wordobj = new JSONObject();
JSONArray blocktext = new JSONArray();
JSONArray blockconfidence = new JSONArray();
JSONArray blocklanguages = new JSONArray();
JSONArray blockpoints = new JSONArray();
JSONArray blockframe = new JSONArray();
JSONArray linetext = new JSONArray();
JSONArray lineconfidence = new JSONArray();
JSONArray linelanguages = new JSONArray();
JSONArray linepoints = new JSONArray();
JSONArray lineframe = new JSONArray();
JSONArray wordtext = new JSONArray();
JSONArray wordconfidence = new JSONArray();
JSONArray wordlanguages = new JSONArray();
JSONArray wordpoints = new JSONArray();
JSONArray wordframe = new JSONArray();
if(result.getText().trim().equals(""))
{
callbackContext.error("No text found in image");
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
else
{
for (FirebaseVisionText.TextBlock block : result.getTextBlocks())
{
blocktext.put(block.getText());
blockconfidence.put(block.getConfidence());
blocklanguages.put(block.getRecognizedLanguages());
JSONObject blockcorners = new JSONObject();
if (block.getCornerPoints()==null){
blockcorners.put("x1", "");
blockcorners.put("y1", "");
blockcorners.put("x2", "");
blockcorners.put("y2", "");
blockcorners.put("x3", "");
blockcorners.put("y3", "");
blockcorners.put("x4", "");
blockcorners.put("y4", "");
}
else {
blockcorners.put("x1", Objects.requireNonNull(block.getCornerPoints())[0].x);
blockcorners.put("y1", Objects.requireNonNull(block.getCornerPoints())[0].y);
blockcorners.put("x2", Objects.requireNonNull(block.getCornerPoints())[1].x);
blockcorners.put("y2", Objects.requireNonNull(block.getCornerPoints())[1].y);
blockcorners.put("x3", Objects.requireNonNull(block.getCornerPoints())[2].x);
blockcorners.put("y3", Objects.requireNonNull(block.getCornerPoints())[2].y);
blockcorners.put("x4", Objects.requireNonNull(block.getCornerPoints())[3].x);
blockcorners.put("y4", Objects.requireNonNull(block.getCornerPoints())[3].y);
}
// for (Point a:Objects.requireNonNull(block.getCornerPoints()))
// {
// blockcorners.put(a.toString());
// }
blockpoints.put(blockcorners);
JSONObject blockframeobj = new JSONObject();
if (block.getBoundingBox()==null)
{
blockframeobj.put("x", "");
blockframeobj.put("y", "");
blockframeobj.put("height","");
blockframeobj.put("width", "");
}
else {
blockframeobj.put("x", block.getBoundingBox().left);
blockframeobj.put("y", block.getBoundingBox().bottom);
blockframeobj.put("height", block.getBoundingBox().height());
blockframeobj.put("width", block.getBoundingBox().width());
}
blockframe.put(blockframeobj);
for (FirebaseVisionText.Line line : block.getLines())
{
linetext.put(line.getText());
lineconfidence.put(line.getConfidence());
linelanguages.put(line.getRecognizedLanguages());
JSONObject linecorners = new JSONObject();
if (line.getCornerPoints()==null){
linecorners.put("x1", "");
linecorners.put("y1", "");
linecorners.put("x2", "");
linecorners.put("y2", "");
linecorners.put("x3", "");
linecorners.put("y3", "");
linecorners.put("x4", "");
linecorners.put("y4", "");
}
else {
linecorners.put("x1", line.getCornerPoints()[0].x);
linecorners.put("y1", line.getCornerPoints()[0].y);
linecorners.put("x2", line.getCornerPoints()[1].x);
linecorners.put("y2", line.getCornerPoints()[1].y);
linecorners.put("x3", line.getCornerPoints()[2].x);
linecorners.put("y3", line.getCornerPoints()[2].y);
linecorners.put("x4", line.getCornerPoints()[3].x);
linecorners.put("y4", line.getCornerPoints()[3].y);
}
linepoints.put(linecorners);
JSONObject lineframeobj = new JSONObject();
if (line.getBoundingBox()==null)
{
lineframeobj.put("x", "");
lineframeobj.put("y", "");
lineframeobj.put("height","");
lineframeobj.put("width", "");
}
else
{
lineframeobj.put("x", line.getBoundingBox().left);
lineframeobj.put("y", line.getBoundingBox().bottom);
lineframeobj.put("height", line.getBoundingBox().height());
lineframeobj.put("width", line.getBoundingBox().width());
}
lineframe.put(lineframeobj);
for (FirebaseVisionText.Element element : line.getElements())
{
wordtext.put(element.getText());
wordconfidence.put(element.getConfidence());
wordlanguages.put(element.getRecognizedLanguages());
JSONObject wordcorners = new JSONObject();
if (element.getCornerPoints()==null)
{
wordcorners.put("x1", "");
wordcorners.put("y1", "");
wordcorners.put("x2", "");
wordcorners.put("y2", "");
wordcorners.put("x3", "");
wordcorners.put("y3", "");
wordcorners.put("x4", "");
wordcorners.put("y4", "");
}
else
{
wordcorners.put("x1", element.getCornerPoints()[0].x);
wordcorners.put("y1", element.getCornerPoints()[0].y);
wordcorners.put("x2", element.getCornerPoints()[1].x);
wordcorners.put("y2", element.getCornerPoints()[1].y);
wordcorners.put("x3", element.getCornerPoints()[2].x);
wordcorners.put("y3", element.getCornerPoints()[2].y);
wordcorners.put("x4", element.getCornerPoints()[3].x);
wordcorners.put("y4", element.getCornerPoints()[3].y);
}
wordpoints.put(wordcorners);
JSONObject wordframeobj = new JSONObject();
if (element.getBoundingBox()==null)
{
wordframeobj.put("x", "");
wordframeobj.put("y", "");
wordframeobj.put("height","");
wordframeobj.put("width", "");
}
else
{
wordframeobj.put("x", element.getBoundingBox().left);
wordframeobj.put("y", element.getBoundingBox().bottom);
wordframeobj.put("height", element.getBoundingBox().height());
wordframeobj.put("width", element.getBoundingBox().width());
}
wordframe.put(wordframeobj);
//wordframe.put(element.getBoundingBox());
}
}
}
blockobj.put("blocktext", blocktext);
blockobj.put("blockconfidence", blockconfidence);
blockobj.put("blocklanguages", blocklanguages);
blockobj.put("blockpoints", blockpoints);
blockobj.put("blockframe", blockframe);
lineobj.put("linetext", linetext);
lineobj.put("lineconfidence", lineconfidence);
lineobj.put("linelanguages", linelanguages);
lineobj.put("linepoints", linepoints);
lineobj.put("lineframe", lineframe);
wordobj.put("wordtext", wordtext);
wordobj.put("wordconfidence", wordconfidence);
wordobj.put("wordlanguages", wordlanguages);
wordobj.put("wordpoints", wordpoints);
wordobj.put("wordframe", wordframe);
resultobj.put("blocks", blockobj);
resultobj.put("lines", lineobj);
resultobj.put("words", wordobj);
callbackContext.success(resultobj);
PluginResult r = new PluginResult(PluginResult.Status.OK);
callbackContext.sendPluginResult(r);
}
}
catch (JSONException e)
{
callbackContext.error(String.valueOf(e));
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
})
.addOnFailureListener(
new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
callbackContext.error("Error with Text Recognition Module");
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
});
}
else
{
callbackContext.error("Error in uri or base64 data!");
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
} catch (Exception e) {
callbackContext.error("Main loop Exception");
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
}
});
return true;
}
if (action.equals("getBarcode")) {
cordova.getThreadPool().execute(new Runnable() {
public void run() {
try {
int argstype = NORMFILEURI;
// int argrtype = ALL;
String argimagestr = "";
try
{
Log.d("argsbeech", args.toString());
argstype = args.getInt(0);
argimagestr = args.getString(1);
}
catch(Exception e)
{
callbackContext.error("Argument error");
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
Bitmap bitmap= null;
Uri uri = null;
if(argstype==NORMFILEURI || argstype==NORMNATIVEURI||argstype==FASTFILEURI || argstype==FASTNATIVEURI)
{
try
{
if(!argimagestr.trim().equals(""))
{
String imagestr = argimagestr;
// code block that allows this plugin to directly work with document scanner plugin and camera plugin
if(imagestr.substring(0,6).equals("file://"))
{
imagestr = argimagestr.replaceFirst("file://","");
}
//
uri = Uri.parse(imagestr);
if((argstype==NORMFILEURI || argstype==NORMNATIVEURI)&& uri != null) // normal ocr
{
bitmap = MediaStore.Images.Media.getBitmap(cordova.getActivity().getBaseContext().getContentResolver(), uri);
}
else if((argstype==FASTFILEURI || argstype==FASTNATIVEURI) && uri != null) //fast ocr (might be less accurate)
{
bitmap = decodeBitmapUri(cordova.getActivity().getBaseContext(), uri);
}
}
else
{
callbackContext.error("Image Uri or Base64 string is empty");
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
}
catch (Exception e)
{
e.printStackTrace();
callbackContext.error("Exception");
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
}
else if (argstype==BASE64)
{
if(!argimagestr.trim().equals(""))
{
byte[] decodedString = Base64.decode(argimagestr, Base64.DEFAULT);
bitmap = BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);
}
else
{
callbackContext.error("Image Uri or Base64 string is empty");
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
}
else
{
callbackContext.error("Non existent argument. Use 0, 1, 2 , 3 or 4");
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
FirebaseVisionBarcodeDetectorOptions options =
new FirebaseVisionBarcodeDetectorOptions.Builder()
.setBarcodeFormats(
FirebaseVisionBarcode.FORMAT_ALL_FORMATS)
.build();
FirebaseVisionBarcodeDetector barcodeRecognizer = FirebaseVision.getInstance()
.getVisionBarcodeDetector(options);
if (bitmap != null)
{
FirebaseVisionImage image = FirebaseVisionImage.fromBitmap(bitmap);
barcodeRecognizer.detectInImage(image)
.addOnSuccessListener(barcodes -> {
try {
JSONObject resultobj = new JSONObject();
JSONArray rawValue = new JSONArray();
for (FirebaseVisionBarcode barcode: barcodes) {
rawValue.put(barcode.getDisplayValue());
}
resultobj.put("blocktext", rawValue);
callbackContext.success(resultobj);
PluginResult r = new PluginResult(PluginResult.Status.OK);
callbackContext.sendPluginResult(r);
}
catch (JSONException e)
{
callbackContext.error(String.valueOf(e));
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
})
.addOnFailureListener(
new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
callbackContext.error("Error with Barcode Recognition Module");
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
});
}
else
{
callbackContext.error("Error in uri or base64 data!");
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
} catch (Exception e) {
callbackContext.error("Main loop Exception");
PluginResult r = new PluginResult(PluginResult.Status.ERROR);
callbackContext.sendPluginResult(r);
}
}
});
return true;
}
return false;
}
private Bitmap decodeBitmapUri(Context ctx, Uri uri) throws FileNotFoundException
{
int targetW = 600;
int targetH = 600;
BitmapFactory.Options bmOptions = new BitmapFactory.Options();
bmOptions.inJustDecodeBounds = true;
BitmapFactory.decodeStream(ctx.getContentResolver().openInputStream(uri), null, bmOptions);
int photoW = bmOptions.outWidth;
int photoH = bmOptions.outHeight;
int scaleFactor = Math.min(photoW / targetW, photoH / targetH);
bmOptions.inJustDecodeBounds = false;
bmOptions.inSampleSize = scaleFactor;
return BitmapFactory.decodeStream(ctx.getContentResolver()
.openInputStream(uri), null, bmOptions);
}
}
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