java.lang.Object
- AppCompatActivity
- - com.sfu_3dlg_hcvc.multiscan.a3dscannerapp.ARCoreVideoCaptureActivity

```
public class ARCoreVideoCaptureActivity
extends AppCompatActivity
```
ARCore activity that let user record the rgb frames, depth frames and depth confidence maps using Google's ARCore

Field Summary

Fields
Modifier and Type	Field	Description
`private BackgroundRenderer`	`backgroundRenderer`
`(package private) CameraFrameInfo`	`cameraFrameInfo`
`private CameraInfo`	`cameraInfo`
`private java.io.File`	`cameraInfoFile`
`private java.lang.String`	`currentFolderPath`
`private CustomFileWriter`	`customFileWriter`
`private CustomStreamWriterManager`	`customStreamWriterManager`
`private java.io.File`	`depthConfidenceFile`
`private java.lang.Boolean`	`depthDataWritten`
`private java.io.File`	`depthInfoFile`
`(package private) java.nio.ByteBuffer`	`depthRangeByteBuffer`
`private DepthTextureHandler`	`depthTexture`
`private DisplayRotationHelper`	`displayRotationHelper`
`private java.lang.String`	`fileName`
`(package private) int`	`frameCount`
`private GLSurfaceView`	`glSurfaceView`
`private boolean`	`isARCoreInstalled`
`private java.lang.Boolean`	`isDebugMode`
`private boolean`	`isDepthSupported`
`private boolean`	`isRecording`
`private java.io.File`	`mAppFilesFolder`
`private SnackbarHelper`	`messageSnackbarHelper`
`private java.io.File`	`metaDataFile`
`private RecordingConfig`	`recordingConfig`
`private Session`	`session`
`private boolean`	`showDepthMap`
`private java.lang.String`	`TAG`
`private TrackingStateHelper`	`trackingStateHelper`
`private java.lang.String`	`videoFileFullPath`
`(package private) java.nio.ByteBuffer`	`wrapConfidenceData`

Constructor Summary

Constructors
Constructor Description

ARCoreVideoCaptureActivity()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`private void`	`ARSessionStartRecord()`
`private void`	`checkIfARCoreInstalled()`
`private void`	`checkIsDebug()`	Check if the App is running in debug mode
`private void`	`compressTempFiles()`	Compress depth and confidence files
`private void`	`createAppFolder()`	Create the folder that will store all the data about the current scan
`private void`	`createARSession()`
`private void`	`createFiles(java.lang.String fileName)`	Create all the files to store data such as depth data and confidence map
`private java.lang.String`	`createVideoAndFileFolder()`	Create the video file for recording
`private double[]`	`getLastBestLocation()`	Get location data
`static Intent`	`makeIntentForMultiCameraCaptureActivity(Context context)`
`private void`	`matchFrames(int rgbFrame)`
`protected void`	`onCreate(Bundle savedInstanceState)`
`void`	`onDrawFrame(GL10 gl)`	Each time the frame gets updated, call certain methods (EX: record the scene data if the user press record)
`protected void`	`onPause()`
`void`	`onRequestPermissionsResult(int requestCode, java.lang.String[] permissions, int[] results)`
`protected void`	`onResume()`
`void`	`onSurfaceChanged(GL10 gl, int width, int height)`
`void`	`onSurfaceCreated(GL10 gl, EGLConfig config)`
`void`	`onWindowFocusChanged(boolean hasFocus)`
`private void`	`prePopulateSpinner(View view)`	Populate the spinner based the current phone's config
`private void`	`resumeARSession()`
`private void`	`setupARRecordingConfig()`	Setting up rgb video and set the recording resolution
`private void`	`setUpDepthMapSwitch()`	Setting up the switch button so the user can switch between rgb view and depth view
`private void`	`setUpRecordButton()`
`private void`	`setUpRenderer()`
`private void`	`showContentDescriptionDialog()`	Show a dialog and ask user to enter scene type and description of the scene
`private void`	`showRecordingConfigDialog()`	Display a config dialog to user and let user select rgb frame resolution
`private void`	`updateCameraInfo(Frame frame, Camera camera)`	Retrieve basic camera info such as image size and write them into the metadata file
`private int`	`updateFrameCount()`	Retrieve number of frames for the video
`private void`	`writeDepthAndConfidenceInfo(Frame frame, Camera camera)`	Write depth and confidence map to local
`private void`	`writeMetadataFile()`	Write metadata file to local storage

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

isRecording
```
private boolean isRecording
```

isDepthSupported
```
private boolean isDepthSupported
```

showDepthMap
```
private boolean showDepthMap
```

isARCoreInstalled
```
private boolean isARCoreInstalled
```

session
```
private Session session
```

cameraInfo
```
private CameraInfo cameraInfo
```

customFileWriter

private CustomFileWriter customFileWriter

customStreamWriterManager

private CustomStreamWriterManager customStreamWriterManager

glSurfaceView
```
private GLSurfaceView glSurfaceView
```

displayRotationHelper

private DisplayRotationHelper displayRotationHelper

recordingConfig

private RecordingConfig recordingConfig

messageSnackbarHelper

private final SnackbarHelper messageSnackbarHelper

trackingStateHelper

private final TrackingStateHelper trackingStateHelper

depthTexture

private final DepthTextureHandler depthTexture

backgroundRenderer

private final BackgroundRenderer backgroundRenderer

TAG
```
private final java.lang.String TAG
```
See Also:

Constant Field Values

mAppFilesFolder
```
private java.io.File mAppFilesFolder
```

videoFileFullPath

private java.lang.String videoFileFullPath

fileName
```
private java.lang.String fileName
```

currentFolderPath

private java.lang.String currentFolderPath

metaDataFile
```
private java.io.File metaDataFile
```

cameraInfoFile
```
private java.io.File cameraInfoFile
```

depthInfoFile
```
private java.io.File depthInfoFile
```

depthConfidenceFile

private java.io.File depthConfidenceFile

depthDataWritten

private java.lang.Boolean depthDataWritten

isDebugMode
```
private java.lang.Boolean isDebugMode
```

depthRangeByteBuffer

java.nio.ByteBuffer depthRangeByteBuffer

wrapConfidenceData
```
java.nio.ByteBuffer wrapConfidenceData
```

cameraFrameInfo
```
CameraFrameInfo cameraFrameInfo
```

frameCount
```
int frameCount
```

Constructor Detail
- ARCoreVideoCaptureActivity
```
public ARCoreVideoCaptureActivity()
```

Method Detail
- onCreate
```
protected void onCreate(Bundle savedInstanceState)
```
- showRecordingConfigDialog
```
private void showRecordingConfigDialog()
```
  Display a config dialog to user and let user select rgb frame resolution
- prePopulateSpinner
```
private void prePopulateSpinner(View view)
```
  Populate the spinner based the current phone's config
  
  Parameters:
  
  view - the spinner view
- checkIfARCoreInstalled
```
private void checkIfARCoreInstalled()
```
- createAppFolder
```
private void createAppFolder()
```
  Create the folder that will store all the data about the current scan
- setUpDepthMapSwitch
```
private void setUpDepthMapSwitch()
```
  Setting up the switch button so the user can switch between rgb view and depth view
- onResume
```
protected void onResume()
```
- resumeARSession
```
private void resumeARSession()
```
- createARSession
```
private void createARSession()
```
- onPause
```
protected void onPause()
```
- onWindowFocusChanged
```
public void onWindowFocusChanged(boolean hasFocus)
```
- onRequestPermissionsResult
```
public void onRequestPermissionsResult(int requestCode,
                                       java.lang.String[] permissions,
                                       int[] results)
```
- onSurfaceCreated
```
public void onSurfaceCreated(GL10 gl,
                             EGLConfig config)
```
- onSurfaceChanged
```
public void onSurfaceChanged(GL10 gl,
                             int width,
                             int height)
```
- onDrawFrame
```
public void onDrawFrame(GL10 gl)
```
  Each time the frame gets updated, call certain methods (EX: record the scene data if the user press record)
  
  Parameters:
  
  gl - openGLSurface
- writeDepthAndConfidenceInfo
```
private void writeDepthAndConfidenceInfo(Frame frame,
                                         Camera camera)
```
  Write depth and confidence map to local
  
  Parameters:
  
  frame - the current frame
  
  camera - the current camera, used to retrieve camera intrinsics
- updateCameraInfo
```
private void updateCameraInfo(Frame frame,
                              Camera camera)
```
  Retrieve basic camera info such as image size and write them into the metadata file
  
  Parameters:
  
  frame - initial frame after user click the record button
  
  camera - initial camera after user click the record button
- getLastBestLocation
```
private double[] getLastBestLocation()
```
  Get location data
  
  Returns:
  
  GPS coords [Latitude, Longitude]
- makeIntentForMultiCameraCaptureActivity
```
public static Intent makeIntentForMultiCameraCaptureActivity(Context context)
```
- setUpRenderer
```
private void setUpRenderer()
```
- setUpRecordButton
```
private void setUpRecordButton()
```
- matchFrames
```
private void matchFrames(int rgbFrame)
```
- compressTempFiles
```
private void compressTempFiles()
```
  Compress depth and confidence files
- updateFrameCount
```
private int updateFrameCount()
```
  Retrieve number of frames for the video
  
  Returns:
  
  number of frames
- writeMetadataFile
```
private void writeMetadataFile()
```
  Write metadata file to local storage
- showContentDescriptionDialog
```
private void showContentDescriptionDialog()
```
  Show a dialog and ask user to enter scene type and description of the scene
- ARSessionStartRecord
```
private void ARSessionStartRecord()
```
- checkIsDebug
```
private void checkIsDebug()
```
  Check if the App is running in debug mode
- setupARRecordingConfig
```
private void setupARRecordingConfig()
```
  Setting up rgb video and set the recording resolution
- createVideoAndFileFolder
```
private java.lang.String createVideoAndFileFolder()
```
  Create the video file for recording
  
  Returns:
  
  absolute path of the video file
- createFiles
```
private void createFiles(java.lang.String fileName)
```
  Create all the files to store data such as depth data and confidence map
  
  Parameters:
  
  fileName - filename prefix

Class ARCoreVideoCaptureActivity

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

isRecording

isDepthSupported

showDepthMap

isARCoreInstalled

session

cameraInfo

customFileWriter

customStreamWriterManager

glSurfaceView

displayRotationHelper

recordingConfig

messageSnackbarHelper

trackingStateHelper

depthTexture

backgroundRenderer

TAG

mAppFilesFolder

videoFileFullPath

fileName

currentFolderPath

metaDataFile

cameraInfoFile

depthInfoFile

depthConfidenceFile

depthDataWritten

isDebugMode

depthRangeByteBuffer

wrapConfidenceData

cameraFrameInfo

frameCount

Constructor Detail

ARCoreVideoCaptureActivity

Method Detail

onCreate

showRecordingConfigDialog

prePopulateSpinner

checkIfARCoreInstalled

createAppFolder

setUpDepthMapSwitch

onResume

resumeARSession

createARSession

onPause

onWindowFocusChanged

onRequestPermissionsResult

onSurfaceCreated

onSurfaceChanged

onDrawFrame

writeDepthAndConfidenceInfo

updateCameraInfo

getLastBestLocation

makeIntentForMultiCameraCaptureActivity

setUpRenderer

setUpRecordButton

matchFrames

compressTempFiles

updateFrameCount

writeMetadataFile

showContentDescriptionDialog

ARSessionStartRecord

checkIsDebug

setupARRecordingConfig

createVideoAndFileFolder

createFiles