added room name QR code scanning and custom resolution/fps

Author: mslavescu

app/build.gradle

@@ -25,8 +25,8 @@ android {
         applicationId "org.ossdc.visionai"
         minSdkVersion 16
         targetSdkVersion 30
-        versionCode 2
-        versionName "1.1"
+        versionCode 3
+        versionName "1.3"
     }
     buildTypes {
         release {
@@ -58,4 +58,6 @@ dependencies {
     implementation files('libs/libjingle_peerconnection.jar')
 
     implementation project(':usbserial')
+
+    implementation 'me.dm7.barcodescanner:zxing:1.9.13'
 }

app/src/main/AndroidManifest.xml

@@ -81,11 +81,13 @@
             <meta-data android:name="android.hardware.usb.action.USB_ACCESSORY_ATTACHED" android:resource="@xml/usb_device_filter" />
 
         </activity>
-
+        <activity android:name=".QRCodeScanningActivity"
+            android:label="@string/qr_code_scanner_activity">
+        </activity>
         <service
             android:name="org.ossdc.visionai.usb.UsbService"
             android:enabled="true">
         </service>
     </application>
 
-</manifest>
+</manifest>

app/src/main/java/org/ossdc/visionai/LauncherActivity.java

@@ -15,10 +15,15 @@
  */
 package org.ossdc.visionai;
 
+import android.Manifest;
+import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
 import android.os.Bundle;
+import android.support.v4.app.ActivityCompat;
+import android.support.v4.content.ContextCompat;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.Toolbar;
 import android.view.View;
@@ -36,6 +41,9 @@
 
 public class LauncherActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener {
 
+    private static final int ROOM_NAME_FROM_QR_CODE = 1;
+    public static final String QRCODE_RESULT = "QRCODE_RESULT";
+
     SharedPreferences sp;
 
     private String roomName;
@@ -45,6 +53,7 @@ public class LauncherActivity extends AppCompatActivity implements AdapterView.O
     boolean hideLocalCamera  = true;
     private String robotMode = "OpenBot";
     String[] ROBOT_MODES = { "OpenBot", "Neato", "SPARK Assistant"};
+    private String resFPS;
 
     private static final String CHAR_LIST =
             "1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
@@ -85,6 +94,7 @@ protected void onCreate(Bundle savedInstanceState) {
             useDisplayArea = savedInstanceState.getBoolean("useDisplayArea",false);
             hideLocalCamera = savedInstanceState.getBoolean("hideLocalCamera",false);
             robotMode = savedInstanceState.getString("robotMode","OpenBot");
+            resFPS = savedInstanceState.getString("resFPS","2560,1440,30");
         }
         else
         {
@@ -94,6 +104,7 @@ protected void onCreate(Bundle savedInstanceState) {
             useDisplayArea = sp.getBoolean("useDisplayArea",false);
             hideLocalCamera = sp.getBoolean("hideLocalCamera",false);
             robotMode = sp.getString("robotMode","OpenBot");
+            resFPS = sp.getString("resFPS","2560,1440,30");
         }
 
         EditText roomNameField = findViewById(R.id.editTextTextPersonName);
@@ -102,13 +113,17 @@ protected void onCreate(Bundle savedInstanceState) {
         Switch displayAreaSwitchField = findViewById(R.id.displayAreaSwitch);
         Switch hideLocalCameraSwitchField = findViewById(R.id.hideLocalCameraSwitch);
         Spinner robotModeField = findViewById(R.id.robotMode);
+        EditText resFPSField = findViewById(R.id.editTextResFPS);
 
         backCameraSwitchField.setChecked(useBackCamera);
         roomNameField.setText(roomName);
         roomPasswordField.setText(roomPassword);
         displayAreaSwitchField.setChecked(useDisplayArea);
         hideLocalCameraSwitchField.setChecked(hideLocalCamera);
         robotModeField.setSelection(Arrays.asList(ROBOT_MODES).indexOf(robotMode));
+        resFPSField.setText(resFPS);
+
+
     }
 
     @Override
@@ -120,20 +135,72 @@ public void onNothingSelected(AdapterView<?> arg0) {
         // TODO - Custom Code
     }
 
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        switch(requestCode) {
+            case (ROOM_NAME_FROM_QR_CODE) : {
+                if (resultCode == Activity.RESULT_OK) {
+                    roomName = data.getStringExtra(QRCODE_RESULT);
+
+                    EditText roomNameField = findViewById(R.id.editTextTextPersonName);
+                    roomNameField.setText(roomName);
+                }
+                break;
+            }
+        }
+    }
+
+    public void scanRoomQRCode(View view) {
+            launchActivity(QRCodeScanningActivity.class);
+    }
+
+    public void launchActivity(Class<?> clss) {
+        if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA)
+                != PackageManager.PERMISSION_GRANTED) {
+            mClss = clss;
+            ActivityCompat.requestPermissions(this,
+                    new String[]{Manifest.permission.CAMERA}, ZBAR_CAMERA_PERMISSION);
+        } else {
+            Intent intent = new Intent(this,clss);
+            startActivityForResult(intent, ROOM_NAME_FROM_QR_CODE);
+
+        }
+    }
+    private static final int ZBAR_CAMERA_PERMISSION = 1;
+    private Class<?> mClss;
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode,  String permissions[], int[] grantResults) {
+        switch (requestCode) {
+            case ZBAR_CAMERA_PERMISSION:
+                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
+                    if(mClss != null) {
+                        Intent intent = new Intent(this, mClss);
+                        startActivity(intent);
+                    }
+                } else {
+                    Toast.makeText(this, "Please grant camera permission to use the QR Scanner", Toast.LENGTH_SHORT).show();
+                }
+                return;
+        }
+    }
     public void openRaceOSSDCActivity(View view) {
         EditText roomNameField = findViewById(R.id.editTextTextPersonName);
         EditText roomPasswordField = findViewById(R.id.editTextTextPassword);
         Switch backCameraSwitchField = findViewById(R.id.backCameraSwitch);
         Switch displayAreaSwitchField = findViewById(R.id.displayAreaSwitch);
         Switch hideLocalCameraSwitchField = findViewById(R.id.hideLocalCameraSwitch);
         Spinner robotModeField = findViewById(R.id.robotMode);
+        EditText resFPSField = findViewById(R.id.editTextResFPS);
 
         useBackCamera = backCameraSwitchField.isChecked();
         roomName = roomNameField.getText().toString();
         roomPassword = roomPasswordField.getText().toString();
         useDisplayArea = displayAreaSwitchField.isChecked();
         hideLocalCamera = hideLocalCameraSwitchField.isChecked();
         robotMode = ROBOT_MODES[robotModeField.getSelectedItemPosition()];
+        resFPS = resFPSField.getText().toString();
 
         Intent intent = new Intent(this, RaceOSSDCActivity.class);
         intent.putExtra("roomName", roomName);
@@ -142,6 +209,7 @@ public void openRaceOSSDCActivity(View view) {
         intent.putExtra("useDisplayArea", useDisplayArea);
         intent.putExtra("hideLocalCamera", hideLocalCamera);
         intent.putExtra("robotMode", robotMode);
+        intent.putExtra("resFPS", resFPS);
 
         sp=getSharedPreferences("SD", Context.MODE_PRIVATE);
         SharedPreferences.Editor ed=sp.edit();
@@ -151,6 +219,7 @@ public void openRaceOSSDCActivity(View view) {
         ed.putBoolean("useDisplayArea",useDisplayArea);
         ed.putBoolean("hideLocalCamera",hideLocalCamera);
         ed.putString("robotMode",robotMode);
+        ed.putString("resFPS",resFPS);
 
         ed.commit();
 
@@ -166,6 +235,7 @@ public void onSaveInstanceState(Bundle savedInstanceState) {
         savedInstanceState.putBoolean("useDisplayArea", useDisplayArea);
         savedInstanceState.putBoolean("hideLocalCamera", hideLocalCamera);
         savedInstanceState.putString("robotMode", robotMode);
+        savedInstanceState.putString("resFPS", resFPS);
     }
 
     @Override
@@ -177,5 +247,6 @@ public void onRestoreInstanceState(Bundle savedInstanceState) {
         useDisplayArea = savedInstanceState.getBoolean("useDisplayArea");
         hideLocalCamera = savedInstanceState.getBoolean("hideLocalCamera");
         robotMode = savedInstanceState.getString("robotMode");
+        resFPS = savedInstanceState.getString("resFPS");
     }
 }

app/src/main/java/org/ossdc/visionai/QRCodeScanningActivity.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2021 Marius Slavescu - OSSDC.org. All rights reserved.
+ *
+ * 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 org.ossdc.visionai;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+
+import com.google.zxing.Result;
+
+import me.dm7.barcodescanner.zxing.ZXingScannerView;
+
+public class QRCodeScanningActivity extends Activity implements ZXingScannerView.ResultHandler {
+    private ZXingScannerView mScannerView;
+
+    @Override
+    public void onCreate(Bundle state) {
+        super.onCreate(state);
+        mScannerView = new ZXingScannerView(this);   // Programmatically initialize the scanner view
+        setContentView(mScannerView);                // Set the scanner view as the content view
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        mScannerView.setResultHandler(this); // Register ourselves as a handler for scan results.
+        mScannerView.startCamera();          // Start camera on resume
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        mScannerView.stopCamera();           // Stop camera on pause
+    }
+
+    @Override
+    public void handleResult(Result rawResult) {
+        Intent resultIntent = new Intent();
+        resultIntent.putExtra(LauncherActivity.QRCODE_RESULT, rawResult.getText());
+        setResult(Activity.RESULT_OK, resultIntent);
+        finish();
+
+    }
+}