GoldenEye

Quick guide

Add dependency

implementation 'co.infinum:goldeneye:1.1.1'

Initialize

val goldenEye = GoldenEye.Builder(activity).build()

Open camera

if (ContextCompat.checkSelfPermission(context, Manifest.permission.CAMERA)
    == PackageManager.PERMISSION_GRANTED
    ) {
  /* Find back camera */
  val backCamera = goldenEye.availableCameras.find { it.facing == Facing.BACK }
  /* Open back camera */
  goldenEye.open(textureView, backCamera, initCallback)
}

Take picture

goldenEye.takePicture(pictureCallback)

Record video

goldenEye.startRecording(file, videoCallback)
/* Somewhere later */
goldenEye.stopRecording()

You can see all GoldenEye methods here.

Features

GoldenEye supports multiple Camera features that can be changed at runtime:

• Flash mode
• Focus mode
• Preview scale
• Preview size
• Picture size
• Picture quality
• Video quality
• Tap to focus
• Pinch to zoom
• Antibanding mode
• White balance mode
• Color effect mode

If you are interested to read in detail what is supported, there is thorough documentation inside interfaces.

Builder

When initializing GoldenEye instance you can configure it to fit your needs with several interfaces.

Logger

By default logging is turned OFF. By implementing Logger interface, you can enable logs if needed.

object: Logger {
  override fun log(message: String) {
    /* Log standard message */
  }

  override fun log(t: Throwable) {
    /* Log error */
  }
}

OnZoomChangedCallback

GoldenEye supports pinch to zoom functionality. By using OnZoomChangedCallback you can receive callback every time the zoom changes.

object: OnZoomChangedCallback {
  override fun onZoomChanged(zoom: Int) {
    /* Do something */
  }
}

OnFocusChangedCallback

GoldenEye supports tap to focus functionality. By using OnFocusChangedCallback you can receive callback every time the focus changes.

object: OnFocusChangedCallback {
  override fun onFocusChanged(point: Point) {
    /* Do something */
  }
}

PictureTransformation

Once the picture is taken, by default, library will rotate the bitmap to be in sync with device's orientation and mirror the image if it is taken with front camera. If you are not OK with this behavior, you can provide PictureTransformation implementation that will be used instead. PictureTransformation.transform method is executed on the background thread!

object: PictureTransformation {
  override fun transform(picture: Bitmap, config: CameraConfig, orientationDifference: Float): Bitmap {
    /* Transform raw picture */
  }
}

Advanced features

• Antibanding mode
• White balance mode
• Color effect mode

Advanced features are still in experimental phase and we noticed that they do not work on some devices and they were not thoroughly tested so we decided to disable them by default. That means that if you try to change the value via setter, it will simply be ignored.

In case you want to try and play with advanced features, you can enable them when initializing GoldenEye instance.

GoldenEye.Builder(activity)
  .withAdvancedFeatures()
  .build()

Manually set Camera API

You can manually set Camera API and override default GoldenEye behavior. You can call GoldenEye.preferredCameraApi(Context) to check which Camera API will be used by default. It can be useful to force Camera1 API as it is more consistent when taking pictures with FlashMode.ON than Camera2. The issue with Camera1 is that some newer devices would crash when trying to record a video so be very cautious.

GoldenEye.Builder(activity)
  .setCameraApi(CameraApi.CAMERA1)
  .build()

Edge case behavior

• If you call startRecording or takePicture while GoldenEye is already taking a picture or recording a video, immediate onError callback will be dispatched for the second call, first call to startRecording or takePicture will still be active
• If you call release while GoldenEye is taking a picture or recording a video, everything will be canceled including all callbacks, nothing will be dispatched
• If you call GoldenEye.config before InitCallback#onReady is dispatched, returned config will be null
• If you call open while camera is already opened, old camera will be released and closed and new camera will be opened

Known issues

• Video recording with external camera is not supported due to current video configuration limitations of the internal API design
• OnePlus 6 - ColorEffectMode does not work
• Huawei Nexus 6P - Picture taken with Flash is too dark
• LG G5 - Picture taken with Flash is too dark

Contributing

Feedback and code contributions are very much welcome. Just make a pull request with a short description of your changes. By making contributions to this project you give permission for your code to be used under the same license.

Credits

Maintained and sponsored by Infinum.