WIP: recorder and detection in one class

app/src/main/java/com/example/ueberwachungssystem/Detection/VideoDetector.java

@@ -1,22 +1,32 @@
 package com.example.ueberwachungssystem.Detection;
 
+import android.Manifest;
+import android.annotation.SuppressLint;
 import android.content.Context;
+import android.content.pm.PackageManager;
 import android.graphics.ImageFormat;
 import android.media.Image;
 import android.util.Size;
+import android.view.Surface;
+import android.widget.Toast;
+import android.widget.VideoView;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.camera.core.CameraSelector;
 import androidx.camera.core.ExperimentalGetImage;
 import androidx.camera.core.ImageAnalysis;
 import androidx.camera.core.Preview;
+import androidx.camera.core.VideoCapture;
 import androidx.camera.lifecycle.ProcessCameraProvider;
 import androidx.camera.view.PreviewView;
+import androidx.core.app.ActivityCompat;
 import androidx.core.content.ContextCompat;
 import androidx.lifecycle.LifecycleOwner;
 
 import com.google.common.util.concurrent.ListenableFuture;
 
+import java.io.File;
 import java.nio.ByteBuffer;
 import java.util.concurrent.ExecutionException;
 
@@ -46,13 +56,13 @@ public class VideoDetector extends Detector {
     private Boolean isDetectionRunning = false;
     // Preview Camera Image
     private PreviewView previewView = null;
+    private VideoCapture videoCapture = null;
     // Detect Violation
     private static final float PIXEL_THRESHOLD = 30f;  // Luminosity (brightness channel of YUV_420_888)
     private static final float ALARM_THRESHOLD = 0.2f;   // Percent of pixels changed
     private ByteBuffer previousBuffer = null;
 
 
-
     /**
      * Constructor
      * @param context: the context of calling activity (usually "this")
@@ -82,7 +92,7 @@ public class VideoDetector extends Detector {
             } catch (ExecutionException | InterruptedException e) {
                 // No errors need to be handled for this Future. This should never be reached.
             }
-        },ContextCompat.getMainExecutor(context));
+        }, ContextCompat.getMainExecutor(context));
     }
 
 
@@ -111,6 +121,7 @@ public class VideoDetector extends Detector {
      * Binds the Luminosity Analyzer (configure and run Analysis)
      * @param cameraProvider: CameraProvider of Context passed by Constructor
      * */
+    @SuppressLint("RestrictedApi")
     private void bindAnalysis(@NonNull ProcessCameraProvider cameraProvider) {
         // Configure and create Image Analysis
         ImageAnalysis.Builder builder = new ImageAnalysis.Builder();
@@ -145,10 +156,55 @@ public class VideoDetector extends Detector {
         if (previewView != null)
             preview.setSurfaceProvider(previewView.getSurfaceProvider());
 
-        cameraProvider.bindToLifecycle((LifecycleOwner) context, cameraSelector, imageAnalysis, preview);
+        videoCapture = new VideoCapture.Builder()
+                .setVideoFrameRate(30)
+                .setTargetRotation(Surface.ROTATION_0)
+                .build();
+
+
+        cameraProvider.bindToLifecycle((LifecycleOwner) context, cameraSelector, imageAnalysis, videoCapture);
     }
 
 
+    @SuppressLint("RestrictedApi")
+    public void startRecording() {
+
+        File dir = context.getFilesDir();
+        String filename = "recording";
+        String vidFilePath = dir.getAbsolutePath() + "/" + filename + ".mp4";
+        File vidFile = new File(vidFilePath);
+
+        if (ActivityCompat.checkSelfPermission(context, Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) {
+            // TODO: Consider calling
+            //    ActivityCompat#requestPermissions
+            // here to request the missing permissions, and then overriding
+            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
+            //                                          int[] grantResults)
+            // to handle the case where the user grants the permission. See the documentation
+            // for ActivityCompat#requestPermissions for more details.
+            return;
+        }
+        videoCapture.startRecording(
+                new VideoCapture.OutputFileOptions.Builder(vidFile).build(),
+                context.getMainExecutor(),
+                new VideoCapture.OnVideoSavedCallback() {
+                    @Override
+                    public void onVideoSaved(@NonNull VideoCapture.OutputFileResults outputFileResults) {
+                        Toast.makeText(context, "recording saved", Toast.LENGTH_SHORT).show();
+                    }
+
+                    @Override
+                    public void onError(int videoCaptureError, @NonNull String message, @Nullable Throwable cause) {
+                        Toast.makeText(context, "recording failed", Toast.LENGTH_SHORT).show();
+                    }
+                }
+        );
+    }
+
+    @SuppressLint("RestrictedApi")
+    public void stopRecording(){
+        videoCapture.stopRecording();
+    }
 
     /**
      * Calculate Amount of Pixels changed using a threshold
@@ -193,4 +249,9 @@ public class VideoDetector extends Detector {
 
         return changedPixelCount;
     }
+
+    public void playVideo(VideoView videoView) {
+        videoView.setVideoPath(context.getFilesDir() + "/recording.mp4");
+        videoView.start();
+    }
 }

app/src/main/java/com/example/ueberwachungssystem/MainActivity.java

@@ -10,15 +10,19 @@ import androidx.camera.core.ExperimentalGetImage;
 import android.Manifest;
 import android.content.pm.PackageManager;
 import android.os.Bundle;
+import android.util.Log;
 import android.view.View;
 import android.widget.TextView;
 import android.widget.Toast;
 import android.widget.ToggleButton;
 import android.widget.VideoView;
 
+import com.example.ueberwachungssystem.Detection.DetectionReport;
+import com.example.ueberwachungssystem.Detection.Detector;
 import com.example.ueberwachungssystem.Detection.VideoDetector;
 
 import java.io.File;
+import java.util.Arrays;
 
 @ExperimentalGetImage
 public class MainActivity extends AppCompatActivity {
@@ -38,26 +42,40 @@ public class MainActivity extends AppCompatActivity {
         File directory = getFilesDir();
 
 
+        VideoDetector vd = new VideoDetector(this);
+        vd.setOnDetectionListener(new Detector.OnDetectionListener() {
+            @Override
+            public void onDetection(@NonNull DetectionReport detectionReport) {
+                Log.d("onDetection", detectionReport.toString());
+            }
+        });
+        vd.startDetection();
 
 
-        DetectionRecorder detectionRecorder = new DetectionRecorder(this);
-        detectionRecorder.setPreviewView(previewView);
+
+
+        //DetectionRecorder detectionRecorder = new DetectionRecorder(this);
+        //detectionRecorder.setPreviewView(previewView);
 
         ToggleButton toggleButton = findViewById(R.id.previewButton);
         toggleButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 getRecordVideoAccess();
+                File[] files = directory.listFiles();
+                textView.setText(Arrays.toString(files));
 
                 if (isRecordVideoAllowed() && toggleButton.isChecked())
                 {
-                    detectionRecorder.playVideo(videoView);
+                    //vd.startRecording();
+                    vd.playVideo(videoView);
+                    //detectionRecorder.playVideo(videoView);
                     //detectionRecorder.start();
                 }
                 else {
-                    detectionRecorder.stop();
-                    File[] files = directory.listFiles();
-                    //textView.setText(Arrays.toString(files));
+                    //vd.stopRecording();
+
+                    //detectionRecorder.stop();
                 }
             }
         });