All Implemented Interfaces:

android.media.ImageReader.OnImageAvailableListener , com.otaliastudios.cameraview.engine.action.ActionHolder , com.otaliastudios.cameraview.picture.PictureRecorder.PictureResultListener , com.otaliastudios.cameraview.preview.CameraPreview.SurfaceCallback , com.otaliastudios.cameraview.video.VideoRecorder.VideoResultListener
```
@RequiresApi(value = Build.VERSION_CODES.LOLLIPOP) 
public class Camera2Engine
extends CameraBaseEngine implements ImageReader.OnImageAvailableListener, ActionHolder
                    
```

Constructor Summary

Constructors
Constructor	Description
`Camera2Engine(CameraEngine.Callback callback)`

Method Summary

Modifier and Type	Method	Description
`void`	`onPictureResult(@Nullable() PictureResult.Stub result, @Nullable() Exception error)`	Picture was taken or there was some error, ifthe result is null.
`void`	`onVideoRecordingEnd()`	When video ends we must stop the recorder and remove the recorder surface fromcamera outputs.
`void`	`onVideoResult(@Nullable() VideoResult.Stub result, @Nullable() Exception exception)`	The operation was completed, either with success or with an error.
`void`	`setFlash(@NonNull() Flash flash)`
`void`	`setLocation(@Nullable() Location location)`
`void`	`setWhiteBalance(@NonNull() WhiteBalance whiteBalance)`
`void`	`setHdr(@NonNull() Hdr hdr)`
`void`	`setZoom(float zoom, @Nullable() Array<PointF> points, boolean notify)`
`void`	`setExposureCorrection(float EVvalue, @NonNull() Array<float> bounds, @Nullable() Array<PointF> points, boolean notify)`
`void`	`setPlaySounds(boolean playSounds)`
`void`	`setPreviewFrameRate(float previewFrameRate)`
`void`	`setPictureFormat(@NonNull() PictureFormat pictureFormat)`
`void`	`onImageAvailable(ImageReader reader)`
`void`	`setHasFrameProcessors(boolean hasFrameProcessors)`
`void`	`setFrameProcessingFormat(int format)`
`void`	`startAutoFocus(@Nullable() Gesture gesture, @NonNull() MeteringRegions regions, @NonNull() PointF legacyPoint)`
`void`	`addAction(@NonNull() Action action)`	Adds a new action
`void`	`removeAction(@NonNull() Action action)`	Removes a previously added action
`CameraCharacteristics`	`getCharacteristics(@NonNull() Action action)`	Returns the CameraCharacteristics of the currentcamera device.
`TotalCaptureResult`	`getLastResult(@NonNull() Action action)`	Returns the latest TotalCaptureResult.
`CaptureRequest.Builder`	`getBuilder(@NonNull() Action action)`	Returns the current CaptureRequest.Builder so thatactions can apply changes to it and later submit them.
`void`	`applyBuilder(@NonNull() Action source)`	Applies the current builder (as per getBuilder)as a repeating request on the preview.
`void`	`applyBuilder(@NonNull() Action source, @NonNull() CaptureRequest.Builder builder)`	Applies the given builder as a single capture request.Callers can catch the exception and choose what to do.

Methods inherited from class com.otaliastudios.cameraview.engine.CameraBaseEngine
getAngles, getAudio, getAudioBitRate, getAudioCodec, getAutoFocusResetDelay, getCameraOptions, getExposureCorrectionValue, getFacing, getFlash, getFrameManager, getFrameProcessingFormat, getFrameProcessingMaxHeight, getFrameProcessingMaxWidth, getFrameProcessingPoolSize, getHdr, getLocation, getMode, getOverlay, getPictureFormat, getPictureMetering, getPictureSize, getPictureSizeSelector, getPictureSnapshotMetering, getPreview, getPreviewFrameRate, getPreviewFrameRateExact, getPreviewStreamSize, getPreviewStreamSizeSelector, getSnapshotMaxHeight, getSnapshotMaxWidth, getUncroppedSnapshotSize, getVideoBitRate, getVideoCodec, getVideoMaxDuration, getVideoMaxSize, getVideoSize, getVideoSizeSelector, getWhiteBalance, getZoomValue, hasFrameProcessors, isTakingPicture, isTakingVideo, onPictureShutter, onSurfaceChanged, onVideoRecordingStart, setAudio, setAudioBitRate, setAudioCodec, setAutoFocusResetDelay, setFacing, setFrameProcessingMaxHeight, setFrameProcessingMaxWidth, setFrameProcessingPoolSize, setMode, setOverlay, setPictureMetering, setPictureSizeSelector, setPictureSnapshotMetering, setPreview, setPreviewFrameRateExact, setPreviewStreamSizeSelector, setSnapshotMaxHeight, setSnapshotMaxWidth, setVideoBitRate, setVideoCodec, setVideoMaxDuration, setVideoMaxSize, setVideoSizeSelector, stopVideo, takePicture, takePictureSnapshot, takeVideo, takeVideoSnapshot
Methods inherited from class com.otaliastudios.cameraview.engine.CameraEngine
destroy, getPictureSize, getState, getTargetState, getVideoSize, isChangingState, onSurfaceAvailable, onSurfaceDestroyed, restart, setExposureCorrection, setFlash, setFrameProcessingFormat, setHasFrameProcessors, setPictureFormat, setZoom, start, startAutoFocus, stop, takePicture, takeVideo, takeVideoSnapshot
Methods inherited from class android.media.ImageReader.OnImageAvailableListener
onImageAvailable
Methods inherited from class com.otaliastudios.cameraview.engine.action.ActionHolder
addAction, removeAction
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Camera2Engine
```
Camera2Engine(CameraEngine.Callback callback)
```
- Method Detail
  - onPictureResult
```
 void onPictureResult(@Nullable() PictureResult.Stub result, @Nullable() Exception error)
```
    Picture was taken or there was some error, ifthe result is null.
    
    Parameters:
    
    result - the result or null if there was some error
    
    error - the error or null if there wasn't any
  - onVideoRecordingEnd
```
 void onVideoRecordingEnd()
```
    When video ends we must stop the recorder and remove the recorder surface fromcamera outputs. This is done in onVideoResult. However, on some devices, order matters.If we stop the recorder and AFTER send camera frames to it, the camera will try to fillthe recorder "abandoned" Surface and on some devices with a poor internal implementation(HW_LEVEL_LEGACY) this crashes. So if the conditions are met, we restore here. Issue #549.
  - onVideoResult
```
 void onVideoResult(@Nullable() VideoResult.Stub result, @Nullable() Exception exception)
```
    The operation was completed, either with success or with an error.
    
    Parameters:
    
    result - the result or null if error
    
    exception - the error or null if everything went fine
  - setFlash
```
 void setFlash(@NonNull() Flash flash)
```
  - setLocation
```
 void setLocation(@Nullable() Location location)
```
  - setWhiteBalance
```
 void setWhiteBalance(@NonNull() WhiteBalance whiteBalance)
```
  - setHdr
```
 void setHdr(@NonNull() Hdr hdr)
```
  - setZoom
```
 void setZoom(float zoom, @Nullable() Array<PointF> points, boolean notify)
```
  - setExposureCorrection
```
 void setExposureCorrection(float EVvalue, @NonNull() Array<float> bounds, @Nullable() Array<PointF> points, boolean notify)
```
  - setPlaySounds
```
 void setPlaySounds(boolean playSounds)
```
  - setPreviewFrameRate
```
 void setPreviewFrameRate(float previewFrameRate)
```
  - setPictureFormat
```
 void setPictureFormat(@NonNull() PictureFormat pictureFormat)
```
  - onImageAvailable
```
 void onImageAvailable(ImageReader reader)
```
  - setHasFrameProcessors
```
 void setHasFrameProcessors(boolean hasFrameProcessors)
```
  - setFrameProcessingFormat
```
 void setFrameProcessingFormat(int format)
```
  - startAutoFocus
```
 void startAutoFocus(@Nullable() Gesture gesture, @NonNull() MeteringRegions regions, @NonNull() PointF legacyPoint)
```
  - addAction
```
 void addAction(@NonNull() Action action)
```
    Adds a new action
    
    Parameters:
    
    action - action
  - removeAction
```
 void removeAction(@NonNull() Action action)
```
    Removes a previously added action
    
    Parameters:
    
    action - action
  - getCharacteristics
```
@NonNull() CameraCharacteristics getCharacteristics(@NonNull() Action action)
```
    Returns the CameraCharacteristics of the currentcamera device.
    
    Parameters:
    
    action - action
  - getLastResult
```
@Nullable() TotalCaptureResult getLastResult(@NonNull() Action action)
```
    Returns the latest TotalCaptureResult. Can be usedby actions to start querying the state before receiving theirfirst frame.
    
    Parameters:
    
    action - action
  - getBuilder
```
@NonNull() CaptureRequest.Builder getBuilder(@NonNull() Action action)
```
    Returns the current CaptureRequest.Builder so thatactions can apply changes to it and later submit them.
    
    Parameters:
    
    action - action
  - applyBuilder
```
 void applyBuilder(@NonNull() Action source)
```
    Applies the current builder (as per getBuilder)as a repeating request on the preview.
    
    Parameters:
    
    source - action
  - applyBuilder
```
 void applyBuilder(@NonNull() Action source, @NonNull() CaptureRequest.Builder builder)
```
    Applies the given builder as a single capture request.Callers can catch the exception and choose what to do.
    
    Parameters:
    
    source - action
    
    builder - builder

Class Camera2Engine

Constructor Summary

Method Summary

Methods inherited from class com.otaliastudios.cameraview.engine.CameraBaseEngine

Methods inherited from class com.otaliastudios.cameraview.engine.CameraEngine

Methods inherited from class android.media.ImageReader.OnImageAvailableListener

Methods inherited from class com.otaliastudios.cameraview.engine.action.ActionHolder

Methods inherited from class java.lang.Object

Constructor Detail

Camera2Engine

Method Detail

onPictureResult

onVideoRecordingEnd

onVideoResult

setFlash

setLocation

setWhiteBalance

setHdr

setZoom

setExposureCorrection

setPlaySounds

setPreviewFrameRate

setPictureFormat

onImageAvailable

setHasFrameProcessors

setFrameProcessingFormat

startAutoFocus

addAction

removeAction

getCharacteristics

getLastResult

getBuilder

applyBuilder

applyBuilder