CameraBridgeViewBase

java.lang.Object
- SurfaceView
- - org.opencv.android.CameraBridgeViewBase

Direct Known Subclasses:

JavaCameraView, NativeCameraView
```
public abstract class CameraBridgeViewBase
extends SurfaceView
```
This is a basic class, implementing the interaction with Camera and OpenCV library. The main responsibility of it - is to control when camera can be enabled, process the frame, call external listener to make any adjustments to the frame and then draw the resulting frame to the screen. The clients shall implement CvCameraViewListener.

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`static interface`	`CameraBridgeViewBase.CvCameraViewFrame` This class interface is abstract representation of single frame from camera for onCameraFrame callback Attention: Do not use objects, that represents this interface out of onCameraFrame callback!
`static interface`	`CameraBridgeViewBase.CvCameraViewListener`
`static interface`	`CameraBridgeViewBase.CvCameraViewListener2`
`static interface`	`CameraBridgeViewBase.ListItemAccessor`

Field Summary

Fields
Modifier and Type Field and Description

static int CAMERA_ID_ANY

static int CAMERA_ID_BACK

static int CAMERA_ID_FRONT

Fields
Modifier and Type	Field and Description
`static int`	`CAMERA_ID_ANY`
`static int`	`CAMERA_ID_BACK`
`static int`	`CAMERA_ID_FRONT`

Constructor Summary

Constructors
Constructor and Description

CameraBridgeViewBase(Context context, AttributeSet attrs)

CameraBridgeViewBase(Context context, int cameraId)

Constructors
Constructor and Description
`CameraBridgeViewBase(Context context, AttributeSet attrs)`
`CameraBridgeViewBase(Context context, int cameraId)`

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`disableFpsMeter()`
`void`	`disableView()` This method is provided for clients, so they can disable camera connection and stop the delivery of frames even though the surface view itself is not destroyed and still stays on the scren
`void`	`enableFpsMeter()` This method enables label with fps value on the screen
`void`	`enableView()` This method is provided for clients, so they can enable the camera connection.
`void`	`setCameraIndex(int cameraIndex)` Sets the camera index
`void`	`SetCaptureFormat(int format)`
`void`	`setCvCameraViewListener(CameraBridgeViewBase.CvCameraViewListener listener)`
`void`	`setCvCameraViewListener(CameraBridgeViewBase.CvCameraViewListener2 listener)`
`void`	`setMaxFrameSize(int maxWidth, int maxHeight)` This method sets the maximum size that camera frame is allowed to be.
`void`	`surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3)`
`void`	`surfaceCreated(SurfaceHolder holder)`
`void`	`surfaceDestroyed(SurfaceHolder holder)`

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

- Field Detail
  - CAMERA_ID_ANY
```
public static final int CAMERA_ID_ANY
```
    See Also:
    Constant Field Values
  - CAMERA_ID_BACK
```
public static final int CAMERA_ID_BACK
```
    See Also:
    Constant Field Values
  - CAMERA_ID_FRONT
```
public static final int CAMERA_ID_FRONT
```
    See Also:
    Constant Field Values
- Constructor Detail
  - CameraBridgeViewBase
```
public CameraBridgeViewBase(Context context,
                    AttributeSet attrs)
```
  - CameraBridgeViewBase
```
public CameraBridgeViewBase(Context context,
                    int cameraId)
```
- Method Detail
  - disableFpsMeter
```
public void disableFpsMeter()
```
  - disableView
```
public void disableView()
```
    This method is provided for clients, so they can disable camera connection and stop the delivery of frames even though the surface view itself is not destroyed and still stays on the scren
  - enableFpsMeter
```
public void enableFpsMeter()
```
    This method enables label with fps value on the screen
  - enableView
```
public void enableView()
```
    This method is provided for clients, so they can enable the camera connection. The actual onCameraViewStarted callback will be delivered only after both this method is called and surface is available
  - setCameraIndex
```
public void setCameraIndex(int cameraIndex)
```
    Sets the camera index
    
    Parameters:
    cameraIndex - new camera index
  - SetCaptureFormat
```
public void SetCaptureFormat(int format)
```
  - setCvCameraViewListener
```
public void setCvCameraViewListener(CameraBridgeViewBase.CvCameraViewListener listener)
```
  - setCvCameraViewListener
```
public void setCvCameraViewListener(CameraBridgeViewBase.CvCameraViewListener2 listener)
```
    Parameters:
    listener -
  - setMaxFrameSize
```
public void setMaxFrameSize(int maxWidth,
                   int maxHeight)
```
    This method sets the maximum size that camera frame is allowed to be. When selecting size - the biggest size which less or equal the size set will be selected. As an example - we set setMaxFrameSize(200,200) and we have 176x152 and 320x240 sizes. The preview frame will be selected with 176x152 size. This method is useful when need to restrict the size of preview frame for some reason (for example for video recording)
    
    Parameters:
    maxWidth - - the maximum width allowed for camera frame.
    maxHeight - - the maximum height allowed for camera frame
  - surfaceChanged
```
public void surfaceChanged(SurfaceHolder arg0,
                  int arg1,
                  int arg2,
                  int arg3)
```
  - surfaceCreated
```
public void surfaceCreated(SurfaceHolder holder)
```
  - surfaceDestroyed
```
public void surfaceDestroyed(SurfaceHolder holder)
```

Class CameraBridgeViewBase

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

CAMERA_ID_ANY

CAMERA_ID_BACK

CAMERA_ID_FRONT

Constructor Detail

CameraBridgeViewBase

CameraBridgeViewBase

Method Detail

disableFpsMeter

disableView

enableFpsMeter

enableView

setCameraIndex

SetCaptureFormat

setCvCameraViewListener

setCvCameraViewListener

setMaxFrameSize

surfaceChanged

surfaceCreated

surfaceDestroyed