Remove unused videos created on setup

Author: azaat

app/src/main/java/com/googleresearch/capturesync/ImageMetadataSynchronizer.java

@@ -30,6 +30,7 @@
 
 import androidx.annotation.NonNull;
 
+import java.io.File;
 import java.util.ArrayList;
 import java.util.LinkedList;
 import java.util.List;
@@ -392,13 +393,18 @@ public void onCaptureCompleted(
           @Override
           public void onCaptureSequenceCompleted(@NonNull CameraCaptureSession session, int sequenceId, long frameNumber) {
             super.onCaptureSequenceCompleted(session, sequenceId, frameNumber);
-            Log.v(TAG, "YAAAY I've completed succesfully");
             if (context.getLastVideoSeqId() != null && sequenceId == context.getLastVideoSeqId() && context.getLogger() != null) {
               context.getMediaRecorder().stop();
-//        mLogger.close();
-//        mLogger = null;
+
+              if (context.isVideoRecording()) {
+                context.setVideoRecording(false);
+              } else {
+                // MediaRecorder created an empty video on preview, should perform a cleanup
+                  context.deleteUnusedVideo();
+              }
+
               context.getMediaRecorder().reset();
-              context.setVideoRecording(false);
+
               context.getLogger().close();
               context.setLogger(null);
             }

app/src/main/java/com/googleresearch/capturesync/MainActivity.java

@@ -79,7 +79,6 @@
 import java.util.Date;
 import java.util.List;
 import java.util.Locale;
-import java.util.concurrent.Future;
 import java.util.concurrent.FutureTask;
 import java.util.stream.Collectors;
 
@@ -95,6 +94,21 @@ public class MainActivity extends Activity {
     private String lastTimeStamp;
     private PeriodCalculator periodCalculator;
 
+    public String getLastVideoPath() {
+        return lastVideoPath;
+    }
+
+    public void deleteUnusedVideo() {
+        String videoPath = getLastVideoPath();
+        File videoFile = new File(videoPath);
+        boolean result = videoFile.delete();
+        if (!result) {
+            Log.d(TAG, "Video file could not be deleted");
+        }
+    }
+
+    private String lastVideoPath;
+
     public Integer getLastVideoSeqId() {
         return lastVideoSeqId;
     }
@@ -942,6 +956,7 @@ private void createRecorderSurface() throws IOException {
         MediaRecorder recorder = setUpMediaRecorder(surface, false);
         recorder.prepare();
         recorder.release();
+        deleteUnusedVideo();
     }
 
     private MediaRecorder setUpMediaRecorder(Surface surface) throws IOException {
@@ -959,8 +974,8 @@ private MediaRecorder setUpMediaRecorder(Surface surface, boolean specifyOutput)
          * set output file in media recorder
          */
 
-        String currentPath = getOutputMediaFilePath();
-        recorder.setOutputFile(currentPath);
+        lastVideoPath = getOutputMediaFilePath();
+        recorder.setOutputFile(lastVideoPath);
 
         CamcorderProfile profile = CamcorderProfile.get(CamcorderProfile.QUALITY_1080P);
         recorder.setVideoSize(profile.videoFrameWidth, profile.videoFrameHeight);