siebenhaarmi76624/MDT5_1_Ueberwachungssystem_G1
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WIP: recorder and detection in one class

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This commit is contained in:
Bastian Kohler 2023-06-16 11:03:40 +02:00
parent 2e2b400274
commit 0ad340bb32
2 changed files with 88 additions and 9 deletions
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67
app/src/main/java/com/example/ueberwachungssystem/Detection/VideoDetector.java
View File

@ -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();
}
}

30
app/src/main/java/com/example/ueberwachungssystem/MainActivity.java
View File

@ -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();
}
}
});