CameraX

This table lists all the artifacts in the androidx.camera group.

Device testing

CameraX is tested on many devices in our lab. To see a list of the devices currently in the lab, see CameraX lab-tested devices.

Declaring dependencies

To add a dependency on CameraX, you must add the Google Maven repository to your project. Read Google's Maven repository for more information.

Add the dependencies for the artifacts you need in the build.gradle file for your app or module:

dependencies {
  // CameraX core library using the camera2 implementation
  def camerax_version = "1.3.0-alpha05"
  // The following line is optional, as the core library is included indirectly by camera-camera2
  implementation "androidx.camera:camera-core:${camerax_version}"
  implementation "androidx.camera:camera-camera2:${camerax_version}"
  // If you want to additionally use the CameraX Lifecycle library
  implementation "androidx.camera:camera-lifecycle:${camerax_version}"
  // If you want to additionally use the CameraX VideoCapture library
  implementation "androidx.camera:camera-video:${camerax_version}"
  // If you want to additionally use the CameraX View class
  implementation "androidx.camera:camera-view:${camerax_version}"
  // If you want to additionally add CameraX ML Kit Vision Integration
  implementation "androidx.camera:camera-mlkit-vision:${camerax_version}"
  // If you want to additionally use the CameraX Extensions library
  implementation "androidx.camera:camera-extensions:${camerax_version}"
}

dependencies {
    // CameraX core library using the camera2 implementation
    val camerax_version = "1.3.0-alpha05"
    // The following line is optional, as the core library is included indirectly by camera-camera2
    implementation("androidx.camera:camera-core:${camerax_version}")
    implementation("androidx.camera:camera-camera2:${camerax_version}")
    // If you want to additionally use the CameraX Lifecycle library
    implementation("androidx.camera:camera-lifecycle:${camerax_version}")
    // If you want to additionally use the CameraX VideoCapture library
    implementation("androidx.camera:camera-video:${camerax_version}")
    // If you want to additionally use the CameraX View class
    implementation("androidx.camera:camera-view:${camerax_version}")
    // If you want to additionally add CameraX ML Kit Vision Integration
    implementation("androidx.camera:camera-mlkit-vision:${camerax_version}")
    // If you want to additionally use the CameraX Extensions library
    implementation("androidx.camera:camera-extensions:${camerax_version}")
}

Feedback

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Create a new issue

See the Issue Tracker documentation for more information.

Version 1.3

Version 1.3.0-alpha05

March 22, 2023

androidx.camera:camera-*:1.3.0-alpha05 is released. Version 1.3.0-alpha05 contains these commits.

API Changes

• Added VideoCapture rotation APIs, including VideoCapture.Builder.setTargetRotation(int), VideoCapture.setTargetRotation(int), VideoCapture.setTargetRotationDegrees(int) and VideoCapture.getTargetRotation(). The APIs are useful for applications that lock the device orientation. ImageCapture.setTargetRotationDegrees(int) and ImageAnalysis.setTargetRotationDegrees(int) are also added. (Id3ffe, b/205242781)
• Allow VIDEO_CAPTURE and PREVIEW|VIDEO_CAPTURE as effects target. Effects that targets VIDEO_CAPTURE will be applied to the VideoCapture UseCase; Effects that targets PREVIEW|VIDEO_CAPTURE will be applied to a shared stream before copying to Preview and VideoCapture stream. (Iee6f3)

Bug Fixes

• From Camera 1.2.2: Fixed the issue where CameraX Extensions don't work properly when proguard is enabled on some devices such as Pixel (I90aa2)
• Fixed a PreviewView bug that if the app handles screen orientation itself. the preview might become distorted upon rotation. This only happens on certain devices. It can be reproduced on Pixel a4, Pixel 5, and Pixel 6a. (I14340, b/223488673)

Version 1.3.0-alpha04

February 22, 2023

androidx.camera:camera-*:1.3.0-alpha04 is released. Version 1.3.0-alpha04 contains these commits.

New Features

A new feature to support previously unsupported Surface combinations by sharing one stream to multiple UseCases.

• Previously, when binding “Preview, VideoCapture, ImageAnalysis” on camera hardware level FULL and below, or binding “Preview, VideoCapture, ImageCapture” on hardware level LEGACY, CameraX throws IllegalArgumentException.
• The new behavior is that the bindings will work without throwing exceptions. Instead, CameraX uses OpenGL to copy a shared stream to both Preview and VideoCapture.
• As the cost of the buffer copy, the app may see an increase in latency and power consumption.

API Changes

• Add API to convert ImageProxy to Bitmap. The supported ImageProxy format is ImageFormat.YUV_420_888 and PixelFormat.RGBA_8888. If the format is invalid, IllegalArgumentException will be thrown. (Ic7110)
• Add CoroutineCameraViewfinder to support configuring viewfinder using suspending functions in Kotlin. (I657bc)
• Add new public constructor for ViewfinderSurfaceRequest. It provides the flexibility when user cannot provide CameraCharacteristics. (Ie6549)

Bug Fixes

• Fixed the Extensions crash that happens on some Samsung devices when pausing/resuming the app too quickly (Iaca26)

Version 1.3.0-alpha03

January 25, 2023

androidx.camera:camera-*:1.3.0-alpha03 is released. Version 1.3.0-alpha03 contains these commits.

API Changes

• Added CameraInfo.getIntrinsicZoomRatio to provide angle of view information relative to the default camera. (Ib300c)
• Added CameraInfo.getLensFacing to provide lens facing information. Added CameraSelector#LENS_FACING_EXTERNAL as an experimental feature for selecting external cameras. (Icaf3e)
• Add #setEffect() to CameraController that allows adding effects to camera output. (I1d21f)
• Add invalidate() method to SurfaceRequest. The Surface provider can notify that the previously provided surface is no longer valid. (Idc649)
• Add a ImageProcessor API. This interface is for inject post-processing effects into the ImageCapture pipeline. (I575c6)
• Added API Recorder.Builder.setAspectRatio() which can be combined with QualitySelector to support more video resolutions. (I8a082)
• Added Recorder.Builder#setTargetVideoEncodingBitRate to set Target Video Encoding BitRate and Recorder#getTargetVideoEncodingBitRate to get Target Video Encoding BitRate. (I5984d)

Bug Fixes

• Fixed ImageCapture failed when there is no flash unit and flash mode is on. (I9e8b4, b/263391112)
• Fixed JPEG image corruption issue if writing Exif location data on some Samsung Android 12 devices. (Ib7086, b/263747161, b/263289024)
• when setting torch/zoom prior before camera initialization compelets, e.g. calling CameraController#enableTorch, the pending action is cached and submitted once the initialization compeltes. (I11e92, b/264157663)

Version 1.3.0-alpha02

December 7, 2022

androidx.camera:camera-*:1.3.0-alpha02 is released. Version 1.3.0-alpha02 contains these commits.

API Changes

• add a new API for applying post-processing effect to Preview output. (Ic17d5)
• Renamed OutputOptions.getDurationLimit to OutputOptions.getDurationLimitMillis and OutputOptions.setDurationLimit to OutputOptions.setDurationLimitMillis. (I91f0c)
• Add AudioConfig class to handle the audio related setting while recording video. The @RequiresPermission annotation is moved from startRecording functions to AudioConfig to avoid unnecessary permission requests for the cases that audio is not needed. (I28755)
• Remove Metadata, OnVideoSavedCallback, OutputFileOptions and OutputFileResults classes that are no longer used after applying the new video capture API. (I38cd8)
• Apply the new video capture API. The getVideoCaptureTargetSize and setVideoCaptureTargetSize methods are replaced with the getVideoCaptureTargetQuality and the setVideoCaptureTargetQuality methods accordingly, as setTargetResolution is no longer supported. (I2a1d5)

Bug Fixes

• Remove deprecated core.VideoCapture API. (I531e0)
• Fixed the issue that the onError callback is not called when taking pictures without the storage permission.(I936db, b/244807669)
• Improve camera extensions quality and reliability. Camera extensions are disabled on Motorola devices using Camera Extensions v1.1.0 and older due to issues with Bokeh support, image capture, and preview not resuming. (Id3ce3)
• Fixed native crash when video cropping via ViewPort is enabled on legacy devices. (I16b8a, b/251357665)

Version 1.3.0-alpha01

November 9, 2022

androidx.camera:camera-*:1.3.0-alpha01 is released. Version 1.3.0-alpha01 contains these commits.

New Features

• Camera-viewfinder has been published officially. Camera-viewfinder provides a base viewfinder widget that can display the camera feed for Camera2. Please check the sample code for an example.

API Changes

• Added OutputOptions.setDurationLimit to allow setting of video duration limit. The recording will be automatically finalized when exceeding the specified duration limit. (I902a0)
• Add video recording audio error state AudioStats.AUDIO_STATE_SOURCE_ERROR. Sent when audio source setup fails or some error occurs. (I37410)

Bug Fixes

• Add quirk to allow some problematic devices to retry capture once when encountering capture failures. (Id4795)
• Fix PreviewView SurfaceView implementation black screen issue on ViewPager2. As part of the fix, PreviewView will reuse its SurfaceView if the requested resolution is not changed. (Ib3f27)
• Support video cropping (WYSIWYG feature) when ViewPort or CameraController API is used. (Ifbba8, b/201085351)
• Fixed video captured with front camera fails to record on Huawei P40 lite. (I87c57, b/250807400)

Version 1.2

Version 1.2.2

March 22, 2023

androidx.camera:camera-*:1.2.2 is released. Version 1.2.2 contains these commits.

Bug Fixes

• Fixed the issue where CameraX Extensions don't work properly when proguard is enabled on some devices such as Pixel (I90aa2)

Version 1.2.1

January 25, 2023

androidx.camera:camera-*:1.2.1 is released. Version 1.2.1 contains these commits.

Bug Fixes

• Fix JPEG image corruption issue if writing Exif location data on some Samsung Android 12 devices. (b/263289024)

Version 1.2.0

December 7, 2022

androidx.camera:camera-*:1.2.0 is released. Version 1.2.0 contains these commits.

Important changes since 1.1.0

• New library camera-mlkit-vision. Easily integrate CameraX with many MLKit features, including barcode scanning, face detection, text detection, etc. Added MLKitAnalyzer as new APIs.
• New experimental Zero-Shutter Lag API. Optimizes capture pipeline to have better latency while keeping good image quality. When the capture mode is set to CAPTURE_MODE_ZERO_SHUTTER_LAG, the latency between the shutter button is clicked and the picture is taken is expected to be minimized, compared with other capture modes. On devices that don’t support ZERO_SHUTTER_LAG, it’ll fallback to CAPTURE_MODE_MINIMIZE_LATENCY.
• Deprecate android.camera.core.VideoCapture.
• Added setStreamUseCase() as a public Camera2Interop API.
• Added API level requirement for setOutputImageRotationEnabled.
• Renamed ImageAnalysis.Analyzer#getTargetResolutionOverride() to ImageAnalysis.Analyzer#getDefaultTargetResolution().
• Added API for setting location metadata to the saved video.
• Fixed low framerate when using VideoCapture and Preview use cases with 16:9 aspect ratio
• Fixed the black preview issue that happens when BOKEH extension is enabled on some Samsung devices and the user switches the cameras.
• Fixed Samsung J7 Prime (SM-G610M) and J7 (SM-J710MN) Preview/VideoCapture stretched issue on API level 27 devices.
• Disabled the workaround to flip the AF region horizontally of front cameras on Samsung Android T since the issue was fixed

Version 1.2.0-rc01

October 24, 2022

androidx.camera:camera-*:1.2.0-rc01 is released. Version 1.2.0-rc01 contains these commits.

API Changes

• Add setStreamUseCase API for OutputConfiguration. User can specify the Stream Use Case for the stream session, overrding CameraX's internal logics to choose Stream Use Case in order to optimize according to their need. (Ib1a95)

Bug Fixes

• Fixed Samsung J7 Prime (SM-G610M) and J7 (SM-J710MN) Preview/VideoCapture stretched issue on API level 27 devices. Resolution 1920x1080 causes the Preview/VideoCapture images to be stretched. Added workaround to not select the 1920x1080 resolution for Preview or VideoCapture to avoid the image stretched problem. (I0e04e)
• Fixed low framerate when using VideoCapture and Preview use cases with 16:9 aspect ratio on some Huawei devices. (If8c88, b/223643510)
• Fixed camera open failure when Preview's SurfaceProvider is not set. As part of the fix, Preview with no SurfaceProvider set will now not be configured into the camera capture session. (I99681)

Version 1.2.0-beta02

September 21, 2022

androidx.camera:camera-*:1.2.0-beta02 is released. Version 1.2.0-beta02 contains these commits.

API Changes

• Add API level requirement for setOutputImageRotationEnabled (I26e3e, b/240993561)

Bug Fixes

• Disabled the workaround to flip the AF region horizontally of front cameras on Samsung Android T since the issue was fixed. (I05f69)
• Fixed the black preview issue that happens when BOKEH extension is enabled on some Samsung devices and user switches the cameras. (If6168)

Version 1.2.0-beta01

August 24, 2022

androidx.camera:camera-*:1.2.0-beta01 is released. Version 1.2.0-beta01 contains these commits.

New Features

• New library camera-mlkit-vision. Easily integrate CameraX with many MLKit features, including barcode scanning, face detection, text detection, etc. Please find the sample code here.
• New experimental Zero-Shutter Lag API. Optimizes capture pipeline to have better latency while keeping good image quality. When the capture mode is set to CAPTURE_MODE_ZERO_SHUTTER_LAG, the latency between the shutter button is clicked and the picture is taken is expected to be minimized, compared with other capture modes. On devices that don’t support ZERO_SHUTTER_LAG, it’ll fallback to CAPTURE_MODE_MINIMIZE_LATENCY.
• Made ImageAnalysis.Analyzer and MLKitAnalyzer as official APIs.
• Exposed API for setting location metadata to the saved video.
• Rename ImageAnalysis.Analyzer#getTargetResolutionOverride() to ImageAnalysis.Analyzer#getDefaultTargetResolution().

Bug Fixes

• Fixed Alps k61v1_basic_ref image capture issue. The captured JPEG images from HAL have incorrect Exif metadata. The Exif metadata doesn't have the 0xffd9 or 0xffda tag to make ExifInterface correctly parse the attributes. Capturing the images in YUV format and then compressing them to JPEG output images to workaround this issue. (I45abb)

Version 1.2.0-alpha04

July 27, 2022

androidx.camera:camera-*:1.2.0-alpha04 is released. Version 1.2.0-alpha04 contains these commits.

API Changes

• Rename ImageAnalysis.Analyzer#getTargetResolutionOverride() to ImageAnalysis.Analyzer#getDefaultTargetResolution(). The behavior is also changed so that the value returned by this method can be overridden by the value of ImageAnalysis#setTargetResolution(). (If1d36)
• Exposed API for setting location metadata to the saved video. An android.location.Location object can be set via new API androidx.camera.video.OutputOptions.Builder.setLocation(Location). (I313a0, b/204197544)

Bug Fixes

• Fix the issue to take picture with unbind preview (Ie70b6, b/235119898)
• Fixed crash in Recorder when attempting to record while audio source is unavailable. (I9f652)

Version 1.2.0-alpha03

June 29, 2022

androidx.camera:camera-*:1.2.0-alpha03 is released. Version 1.2.0-alpha03 contains these commits.

API Changes

• Removed the experimental annotation for ImageAnalysis.Analyzer and MLKitAnalyzer. (I0ff22)

Bug Fixes

• Added auto focus default timeout 5000ms that will complete the AF part with isFocusSuccessful false if the FocusMeteringAction is not cancelled and the AF part is not converged in the duration. (Ibc2e3)
• Fix the issue to take picture with unbind preview (I1d3a2, b/235119898)
• Enabled advanced extender implementation and update the CameraX support extensions-interface version to 1.2 (I92256)

Version 1.2.0-alpha02

June 1, 2022

androidx.camera:camera-*:1.2.0-alpha02 is released. Version 1.2.0-alpha02 contains these commits.

New Features

• Expose CameraX Zero-Shutter Lag API as experimental.

API Changes

• Add new capture mode CAPTURE_MODE_ZERO_SHUTTER_LAG in ImageCapture and add isZslSupported in CameraInfo to query the device capability. CAPTURE_MODE_ZERO_SHUTTER_LAG mode is aiming to provide the minimum latency for instant capture. It is implemented based on a ring buffer, which caches intermediate capture results for later reprocessing when the user presses buttons to take pictures. If {@link VideoCapture} is bound or flash mode is not OFF or OEM Extension is ON, this mode will be disabled automatically. (I9ae74)
• Add ImageAnalysis.getBackgroundExecutor() method (Icc945)

Bug Fixes

• Fixed ImageCapture takePicture method turns torch off on the reported devices. (Ib5eb5, b/228272227)
• Fixed a bug where AssertionError not being handled when getting the CONTROL_ZOOM_RATIO_RANGE characteristic.(/Ia248a, b/231701345)

Version 1.2.0-alpha01

May 18, 2022

androidx.camera:camera-*:1.2.0-alpha01 is released. Version 1.2.0-alpha01 contains these commits.

New Features

• New library camera-mlkit-vision is launched

Bug Fixes

• Fixed QualitySelector fails to record a UHD video when a fallback strategy is enabled. The issue happens when VideoCapture is bound with ImageCapture and Preview on a FULL or higher hardware level camera device. A fallback strategy of QualitySelector causes VideoCapture incorrectly to get a FHD resolution. UHD resolution is actually supported for this use case combination and should be adopted. (I0e788, b/230651237)
• Fixed NullPointerException on ImageCapture.takePicture(). (I92366, b/230454568, b/229766155)
• Fix async pause behavior of androidx.camera.video.Recorder (Ia8ce8)

Camera-Camera2, Camera-Core, Camera-Lifecycle, & Camera-Video Version 1.1.0

Version 1.1.0

June 29, 2022

androidx.camera:camera-*:1.1.0 is released. Version 1.1.0 contains these commits.

Important changes since 1.0.0

• Landed View, Extension and Video Capture libraries as their first RC version. From 1.1.0-beta01, all CameraX libraries will align the same version number. This will help developers track versions much easier and reduce the complexity of large version compatibility matrices.
• Introduced new public APIs and features which including:
• Add the official camera-video library to support video capture use cases.
• YUV to RGB conversion and rotation capability (ImageAnalysis.Builder.setOutputImageRotationEnabled and setOutputImageFormat)
• Support multi-window mode by allowing CameraX applications to resume the camera when the camera is interrupted by another app and focus is back.
• Ensures CameraX works well in foldable devices by fixing some preview issues.
• Added a CameraState API that will be exposed through CameraInfo.
• Added an API ProcessCameraProvider.getAvailableCameraInfos() to directly retrieve information about the available cameras
• Output JPEG format for ImageCapture#OnImageCapturedCallback when Extensions are enabled.
• Added a API isFocusMeteringSupported in CameraInfo which allows applications to check if the given FocusMeteringAction is supported on current camera or not.
• Exposed getResolutionInfo API to provide the resolution information for Preview, ImageCapture and ImageAnalysis.
• Added a new API ImageCapture.Builder#setJpegQuality to allow changing the output JPEG image compression quality when taking pictures.
• Added CameraSelector#filter to the public API to filter a list of CameraInfos based on a CameraSelector.
• Added Camera2CameraControl.clearCaptureRequestOptions for clearing the existing capture request options.
• Added an experimental API for using CameraController with external image processing libraries. e.g. MLKit
• Added experimental API CameraInfo#getCameraSelector() which returns a CameraSelector unique to its camera
• Promoted several experimental APIs to formal public APIs
• Replaced annotation @Experimental with @RequiresOptIn to experimental APIs. For calling experimental APIs, use androidx.annotation.OptIn instead of deprecated androidx.annotation.experimental.UseExperimental.
• Promoted the following experimental APIs to official APIs: CameraXConfig.Builder#setAvailableCamerasLimiter(), CameraXConfig.Builder#setMinimumLoggingLevel(), CameraXconfig.Builder#setSchedulerHandler(), CameraXConfig#getAvailableCamerasLimiter(), CameraXConfig#getMinimumLoggingLevel(), CameraXConfig#getCameraExecutor(), CameraXConfig#getSchedulerHandler(),
• @ExperimentalCameraFilter APIs
• experimental exposure compensation APIs.
• Promoted the experimental UseCaseGroup API for camera-core, camera-lifecycle and camera-video. Added ViewPort#getLayoutDirection, ViewPort.Builder#setLayoutDirection and ViewPort.Builder#setScaleType for customizing viewport.
• Promoted the ExperimentalUseCaseGroupLifecycle to formal public APIs.
• Changes to the existing APIs
• Renamed MediaStoreOutputOptions.getCollection to MediaStoreOutputOptions.getCollectionUri.
• ActiveRecording has been renamed to "Recording" to reduce verbosity.
• Changed QualitySelector creator API to a list-based API

Bug Fixes

• Fixed YuvToJpegProcessor EOFException issue when extension mode is enabled and ImageCapture#CAPTURE_MODE_MAX_QUALITY mode is set.
• Fixed codec configuration failed due to video recording is closing
• Fixed stretched preview/video aspect ratio when recording at FHD
• Fixed audio/video out of sync after pause and resume on some devices
• Fixed the issue where flash is triggered during tap-to-focus (startFocusAndMetering) when flash mode is auto or always_on in low-light environment.

Version 1.1.0-rc02

June 1, 2022

androidx.camera:camera-*:1.1.0-rc02 is released. Version 1.1.0-rc02 contains these commits.

Bug Fixes

• Fixed NullPointerException on ImageCapture.takePicture(). (I92366, b/230454568, b/229766155)
• Fixed a bug where AssertionError not being handled when getting the CONTROL_ZOOM_RATIO_RANGE characteristic. (Ia248a, b/231701345)

Version 1.1.0-rc01

May 11, 2022

androidx.camera:camera-*:1.1.0-rc01 is released. Version 1.1.0-rc01 contains these commits.

New Features

• Release the first RC version for camera-video, camera-view, and camera-extension

Bug Fixes

• Fixed an issue where the video codec wasn't released when VideoCapture<Recorder> was unbound, causing subsequent uses of VideoCapture<Recorder> to fail on recording with MediaCodec.CodecException, especially on API 21-22 devices. (Ie7f68)
• Fix captured images of CameraExtensionsActivity do not be deleted in ImageCaptureTest

Version 1.1.0-beta03

April 6, 2022

androidx.camera:camera-*:1.1.0-beta03 is released. Version 1.1.0-beta03 contains these commits.

API Changes

• Made CaptureRequestOptions constructor restricted. (I261b6)
• Added an experimental API for using CameraController with external image processing libraries. e.g. MLKit (I4ea71)

Bug Fixes

• Fixed the issue that preview becomes sideway in PreviewView when activity is not restarted after rotating devices in multi-window. (I1ea36, b/223488673)
• Fix a multi-window issue that when focus changes back to the app it fails to resume the camera when (1) other high priority app opens a different camera (2) the device is Samsung Android 12 devices. (I7e9f2)
• Workaround included for devices that crash when checking availability of flash. These devices will not have torch available. (If26a3, b/216667482)
• Fix AbstractMethodError issue happened when apps use extensions and enable proguard. (I7cbaf, b/222726805)
• Force disable bokeh extension mode on Motorola razr 5G device which will cause black preview screen issue. (I35d49)
• Fixed audio/video out of sync after pause and resume on some Samsung devices pre-API 29. (I64622, b/202798609, b/202798572)
• Fixed audio/video out of sync after pause and resume on Sony G3125. (I2a1a5, b/202799148)
• Fixed a crash when the Recorder encountered an InvalidConfigException. However, this fix only prevents app from crashing, but doesn't resolve the cause of the InvalidConfigException. If the Recorder still cannot be configured, applications will receive error callback when it starts recording. (I89c29, b/213617227)

External Contribution

• updated :compose:ui:ui-test api (updateApi) due to test-coroutines-lib migration (I3366d)

Version 1.1.0-beta02

February 23, 2022

androidx.camera:camera-*:1.1.0-beta02 is released. Version 1.1.0-beta02 contains these commits.

API Changes

• Add the ability to specify physical camera ID through Camera2Interop. (I5aed8)

Bug Fixes

• Fixed the stretched preview issue on Oppo Find N (I7d004)
• Fixed a Galaxy J7 Prime issue that the preview is distorted. (I4c500)
• Use compatible bitrate to find video encoder. (d969052)

Version 1.1.0-beta01

January 26, 2022

androidx.camera:camera-*:1.1.0-beta01 is released. Version 1.1.0-beta01 contains these commits.

New Features

• From 1.1.0-beta01, all CameraX libraries will align the same version number. This will help developers track versions much easier and reduce the complexity of large version compatibility matrix.

API Changes

• Added Camera2CameraControl.clearCaptureRequestOptions for clearing the existing capture request options. (Ifa07d)

Bug Fixes

• Fixed the crash when recording the video on some pre-Android O(API 26) devices. (I88fdf, b/212328261)
• Fixed the incorrect AF region issue when using cameraControl#startFocusAndMetering() on front lens-facing camera in Samsung devices (Ifbf59, b/210548792)
• Use torch as flash on Pixel 3a/Pixel 3a XL to improve the speed and the captured image quality in dark (Ib12b6, b/211474332)
• Enabled applications to resume the camera when camera is interrupted by other higher priority application in the multi-window mode and the focus changes back to the application. Please note that there could be some latency(1 second to 10 seconds or more) between focus changes and camera reopened due to some framework issue. (I4d092)

Version 1.1.0-alpha12

December 15, 2021

androidx.camera:camera-*:1.1.0-alpha12 is released. Version 1.1.0-alpha12 contains these commits.

API Changes

• Removed unnecessary @RequiresApi(21) annotations from the inner classes/interfaces. (I8e286, b/204917951)
• The quality constants and fallback strategy constants of QualitySelector have been changed to be represented by class objects. For example, QualitySelector.QUALITY_HD is changed to Quality.HD, and QualitySelector.FALLBACK_STRATEGY_LOWER is changed to the instance returned by FallbackStrategy.lowerQualityOrHigherThan(Quality). The API used to create QualitySelector has been changed to a list-based API. The new API QualitySelector.fromOrderedList(List<Quality>) will refer to the order of the input quality list instead of the order created by QualitySelector.Procedure. QualitySelector.Procedure class has been removed. (I43343)
• PendingRecording.withEventListener() was removed and the event listener must now be passed to PendingRecording.start(). This event listener requirement is meant to encourage handling of asynchronous errors that are reported in the VideoRecordEvent.Finalize event. (I1e71d)
• ActiveRecording has been renamed to Recording to reduce verbosity. (I77ceb)

Bug Fixes

• Fixed the issue that captured photos in FLASH_AUTO mode is underexposed in dark conditions on Pixel 3a and Pixel 3a XL (I13f19, b/205373142)
• Always use latest display size to determine the preview Resolution. (I4a694)
• Filtered out cameras which do not have REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE. Cameras with REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE have the minimal set of capabilities that every camera device supports. Camera without REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE might be a camera to support special functionality and does not support standard color output. CameraX can't support the Preview, ImageCapture, ImageAnalysis or VideoCapture use cases for those cameras. Therefore, those cameras should be filtered out to prevent incorrect usage. (Ib8cda)
• CameraSelector#filter no longer throws an IllegalArgumentException when the result set is empty. (I27804)
• Smarter heuristics are now used to select encoder settings based on OEM specified profiles. (Iaeef0)
• Fixed Preview will have interlaced color lines after start UHD video recording on Pixel1. (I833c6, b/205340278)

Version 1.1.0-alpha11

November 17, 2021

androidx.camera:camera-*:1.1.0-alpha11 is released. Version 1.1.0-alpha11 contains these commits.

API Changes

• Added CameraSelector#filter to the public API to filter a list of CameraInfos based on a CameraSelector. (I105d0)

• Add setOutputImageRotationEnabled API for ImageAnalysis config. User can enable rotation for YUV/RGB image buffer. The rotation degree is a relative rotation calculated based on sensor rotation and target rotation to keep image upfront.

• Add setOutputImageRotationEnabled API for ImageAnalysis config. User can enable rotation for YUV/RGB image buffer. The rotation degree is a relative rotation calculated based on sensor rotation and target rotation to keep image upfront.

  Add getSensorToBufferTransformMatrix API in ImageInfo. The returned matrix is a mapping from sensor coordinates to buffer coordinates, which is, from the value of CameraCharacteristics.SENSOR_INFO_ACTIVE_ARRAY_SIZE to (0, 0, image.getWidth, image.getHeight). The matrix can be used to map the coordinates from one {UseCase} to another. For example, mapping coordinates of the face detected with ImageAnalysis to Preview. (I9ff1e)

• Added a new API ImageCapture.Builder#setJpegQuality to allow changing the output JPEG image compression quality when taking picture. (I8dcf4)

• Renamed MediaStoreOutputOptions.getCollection to MediaStoreOutputOptions.getCollectionUri. (I16639)

Bug Fixes

• Fixed the issue where flash being triggered during tap-to-focus (startFocusAndMetering) when flash mode is auto or always_on in low-light environment. (Id4c11)
• Disabled HDR+ on Pixel 2 XL / Pixel 3 XL in MINIMIZE_LATENCY mode to reduce latency. (Ib6270, b/203505523)

External Contribution

Version 1.1.0-alpha10

October 13, 2021

androidx.camera:camera-*:1.1.0-alpha10 is released. Version 1.1.0-alpha10 contains these commits.

New Features

• Released androidx.camera:camera-video:1.1.0-alpha10 as the first alpha version for Video officially. There are several known issues to be fixed in the later releases.

API Changes

• Added @RequiresApi(21) annotation to all CameraX classes and dropped minSdkVersion from AndroidManifest.xml. This will allow camera-core to be easily integrated into applications that have a minSdkVersion less than 21, but want to conditionally use code paths that rely on API 21 and higher. For any application with minSdkVersion 21 or higher, this change requires no action. (Ie7f2e, b/200599470)

Bug Fixes

• Throw an InitializationException to make the app be able to gracefully handle the AssertionError happened when creating CameraCharacteristics. (Ibec79)

Version 1.1.0-alpha09

September 29, 2021

androidx.camera:camera-camera2:1.1.0-alpha09, androidx.camera:camera-core:1.1.0-alpha09, and androidx.camera:camera-lifecycle:1.1.0-alpha09 are released. Version 1.1.0-alpha09 contains these commits.

API Changes

• ExperimentalUseCaseGroup annotation is removed now that the APIs are no longer experimental. (I01ef5)

Bug Fixes

• Fix the issue where the captured photos are blurred in MAXIMIZE_QUALITY mode. (I173a9, b/193823892)
• Fixed a Samsung Galaxy J5 issue that camera gets stuck after taking pictures with flash on/auto in dark environment (I3aab9)
• When cropping is needed for ImageCapture, compressing the output cropped image with the specified JPEG quality level according to the set capture mode. If the capture mode is CAPTURE_MODE_MINIMIZE_LATENCY, the JPEG compression quality will be 95. If the capture mode is CAPTURE_MODE_MAXIMIZE_QUALITY, the JPEG compression quality will be 100. (Ieb37c, b/142856426)

Version 1.1.0-alpha08

August 18, 2021

androidx.camera:camera-camera2:1.1.0-alpha08, androidx.camera:camera-core:1.1.0-alpha08, and androidx.camera:camera-lifecycle:1.1.0-alpha08 are released. Version 1.1.0-alpha08 contains these commits.

New Features

• Add setOutputImageFormat API for image analysis config. User can select ImageAnalysis.OUTPUT_IMAGE_FORMAT_YUV_420_888 or ImageAnalysis.OUTPUT_IMAGE_FORMAT_RGBA_8888. By default, ImageAnalysis.OUTPUT_IMAGE_FORMAT_YUV_420_888 will be selected. (I7902d)

API Changes

• ExperimentalUseCaseGroupLifecycle annotation is removed now that the APIs are no longer experimental. (I17b85)

Bug Fixes

• Fixed Preview screen is too bright on the Huawei P20 Lite. This problem only occurs when certain special Preview resolutions are used together with a large zoom in value. (Idefce, b/192129158)
• Fixed an issue that flash is not working on some devices when setting flash mode to FLASH_MODE_ON shortly followed by taking pictures. (Ieb49b)
• Fixed the issue where Preview will halt for a while when taking pictures if VideoCapture, ImageCapture and Preview are bound. (I56197, b/193864120)
• Allows ImageAnalysis to select a resolution larger than 1080p. A LIMITED-level above device can support a RECORD size resolution for ImageAnalysis when it is bound together with Preview and ImageCapture. The trade-off is the selected resolution for the ImageCapture will also need to be a RECORD size resolution. To successfully select a RECORD size resolution for ImageAnalysis, a RECORD size target resolution should be set on both ImageCapture and ImageAnalysis. This indicates that the application clearly understands the trade-off and prefers the ImageAnalysis to have a larger resolution rather than the ImageCapture to have a MAXIMUM resolution. For the definitions of RECORD, MAXIMUM sizes and more details see https://developer.android.com/reference/android/hardware/camera2/CameraDevice#regular-capture. The RECORD size refers to the camera device's maximum supported recording resolution, as determined by CamcorderProfile. The MAXIMUM size refers to the camera device's maximum output resolution for that format or target from StreamConfigurationMap.getOutputSizes(int). (I1ee97, b/192911449)
• Add the Exif info to the captured image. (I01ff0, b/193342619)
• In ImageCapture, return the URI of the saved image if the saving location is File. (Ib5b49, b/149241379)
• Fixed an issue that captured images with flash is dark on many devices. (I4e510)

Version 1.1.0-alpha07

July 21, 2021

androidx.camera:camera-camera2:1.1.0-alpha07, androidx.camera:camera-core:1.1.0-alpha07, and androidx.camera:camera-lifecycle:1.1.0-alpha07 are released. Version 1.1.0-alpha07 contains these commits.

Bug Fixes

• Fixed a Samsung Galaxy Note 5 issue that camera gets stuck after taking pictures with flash on/auto in dark environment (If6871)
• Fixed YuvToJpegProcessor EOFException issue when extension mode is enabled and ImageCapture#CAPTURE_MODE_MAX_QUALITY mode is set. (I538bd, b/192017012)

Version 1.1.0-alpha06

June 30, 2021

androidx.camera:camera-camera2:1.1.0-alpha06, androidx.camera:camera-core:1.1.0-alpha06, and androidx.camera:camera-lifecycle:1.1.0-alpha06 are released. Version 1.1.0-alpha06 contains these commits.

API Changes

• Promote the experimental exposure compensation APIs for camera-core (I08ee8)
• Added a API isFocusMeteringSupported in CameraInfo which allows applications to check if the given FocusMeteringAction is supported on current camera or not. (Ib45ae, b/188606490)
• Exposed getResolutionInfo API to provide the resolution information for Preview, ImageCapture and ImageAnalysis. (I2b613, b/188600718)
• Promoted the following experimental APIs to official APIs: CameraXConfig.Builder#setAvailableCamerasLimiter(), CameraXConfig.Builder#setMinimumLoggingLevel(), CameraXconfig.Builder#setSchedulerHandler(), CameraXConfig#getAvailableCamerasLimiter(), CameraXConfig#getMinimumLoggingLevel(), CameraXConfig#getCameraExecutor(), CameraXConfig#getSchedulerHandler(). (I2ade2)
• Exposed the CameraProvider interface to provide access to a set of cameras. (I1a7b1)
• Promote the experimental UseCaseGroup API for camera-core, camera-lifecycle and camera-video. Added ViewPort#getLayoutDirection, ViewPort.Builder#setLayoutDirection and ViewPort.Builder#setScaleType for customizing viewport. (I7cee8)

Version 1.1.0-alpha05

June 2, 2021

androidx.camera:camera-camera2:1.1.0-alpha05, androidx.camera:camera-core:1.1.0-alpha05, and androidx.camera:camera-lifecycle:1.1.0-alpha05 are released. Version 1.1.0-alpha05 contains these commits.

API Changes

• Removed Camera2CameraFilter class. Suggest to select camera by CameraFilter and retrieve CameraCharacteristics or other Camera2 related information through Camera2CameraInfo if needed. (Ib887c)
• ExperimentalCameraFilter APIs are now out of experimental stage and become formal APIs. They can be used without annotated OptIn. (I4bc94)
• Added camera state API that's exposed through CameraInfo#getCameraState(). (Ia86b4)
• Added experimental API CameraInfo#getCameraSelector() which returns a CameraSelector unique to its camera (I77f9f)

Bug Fixes

• Fixed the issue that ListenableFuture returned in setZoomRatio and setLinearZoom cannot complete on some android 11 devices (I716d7)
• Speed up Camera switching and reduce the error happen rate of the camera device (I34c99)
• Replaced ExperimentalUseCaseGroupLifecycle with ExperimentalUseCaseGroup. (I3b2ef, b/159033688)

Version 1.1.0-alpha04

April 21, 2021

androidx.camera:camera-camera2:1.1.0-alpha04, androidx.camera:camera-core:1.1.0-alpha04, and androidx.camera:camera-lifecycle:1.1.0-alpha04 are released. Version 1.1.0-alpha04 contains these commits.

Bug Fixes

• Fixed a memory leak caused by multiple threads concurrently accessing the same collection. The memory leak may cause the Activity or Fragment to be retained by a Preview instance. (I7b4b8)
• Replaced annotation @Experimental with @RequiresOptIn to experimental APIs. For calling experimental APIs, use androidx.annotation.OptIn instead of deprecated androidx.annotation.experimental.UseExperimental. (Iff226)
• Fixed ImageCapture with flash On/Auto takes washed out images on Samsung Galaxy S7. (I30001)
• Added a CameraState API that will be exposed through CameraInfo. (I75392)

Version 1.1.0-alpha03

March 24, 2021

androidx.camera:camera-camera2:1.1.0-alpha03, androidx.camera:camera-core:1.1.0-alpha03, and androidx.camera:camera-lifecycle:1.1.0-alpha03 are released. Version 1.1.0-alpha03 contains these commits.

Bug Fixes

• Output JPEG format for ImageCapture#OnImageCapturedCallback when Extensions modes is enabled. (I0d7b1)
• Fixed initialization failure on UMIDIGI BISON devices (I57d9e, b/180818665)
• Fixed Samsung A3 stretched preview in PreviewView. (Iacb30, b/180121821)

Version 1.1.0-alpha02

February 24, 2021

androidx.camera:camera-camera2:1.1.0-alpha02, androidx.camera:camera-core:1.1.0-alpha02, and androidx.camera:camera-lifecycle:1.1.0-alpha02 are released. Version 1.1.0-alpha02 contains these commits.

API Changes

• Added an API ProcessCameraProvider.getAvailableCameraInfos() to directly retrieve information about the available cameras, which are either all of the device's cameras, or those selected by the CameraSelector provided in CameraXConfig.Builder.setAvailableCamerasLimiter(CameraSelector). (Ieac08)

Bug Fixes

• CameraX now tries to force open a camera on the initial attempt, this may result in CameraX stealing the camera away from other camera clients when its app has a higher priority. (Iab069, b/175820568)
• Fixed the Robolectric test failure when setAvailableCamerasLimiter is used in CameraXConfig. (Ice307)
• This change catches the exception when the image queue is maxed out in ImageAnalysis. So instead of crashing, you may notice other use cases being frozen or sluggish. e.g. frozen/sluggish preview. (Ic12da, b/175851631)
• Fixed ExtensionsErrorListener to report errors when only Preview or ImageCapture is bound. (I5ae39)
• Fixed ImageCapture performance regression by removing the validation of image saved location before taking a picture. After making this change, if the save destination is invalid, it will take longer to get the failure response because it will try to save the image after the photo is taken. (I1fd4e, b/177061560)
• Fixed ImageCapture performance regression with "File" type OutputFileOptions. (I5164a, b/177061560)
• Documentation updated to recommend against using ProcessCameraProvider.configureInstance(...) from library code. (Ib8a9f)

Version 1.1.0-alpha01

January 27, 2021

androidx.camera:camera-camera2:1.1.0-alpha01, androidx.camera:camera-core:1.1.0-alpha01, and androidx.camera:camera-lifecycle:1.1.0-alpha01 are released. Version 1.1.0-alpha01 contains these commits.

Bug Fixes

• Workaround included for intermittent corrupt image data in JPEGs on SM-G930T back-facing camera. (I52001, b/159831206)
• Fixed IllegalArgumentException issue that happened when all preview supported sizes are smaller than 640x480 and display size is larger than 640x480. (I2a63c, b/150506192)
• Resources in libraries with no explicitly declared public resources (ex. via public.xml) are now private by default. (Ia1dcc, b/170882230)

Camera-Camera2, Camera-Core, & Camera-Lifecycle Version 1.0.2

Version 1.0.2

September 29, 2021

androidx.camera:camera-camera2:1.0.2, androidx.camera:camera-core:1.0.2, and androidx.camera:camera-lifecycle:1.0.2 are released. Version 1.0.2 contains these commits.

Bug Fixes

• Fix the issue where the captured photos are blurred in MAXIMIZE_QUALITY mode. (I173a9, b/193823892)
• Fixed a issue that captured image with flash is dark on many devices. (I4e510)

Camera-Camera2, Camera-Core, & Camera-Lifecycle Version 1.0.1

Version 1.0.1

July 21, 2021

androidx.camera:camera-camera2:1.0.1, androidx.camera:camera-core:1.0.1, and androidx.camera:camera-lifecycle:1.0.1 are released. Version 1.0.1 contains these commits.

Bug Fixes

• Fixed the issue that the ListenableFuture returned in setZoomRatio and setLinearZoom cannot complete on some android 11 devices (I716d7)

• Fixed the issue that the camera gets stuck at closing camera state on some devices and causes black preview. (I34c99)

Camera-Camera2, Camera-Core, & Camera-Lifecycle Version 1.0.0

Version 1.0.0

May 5, 2021

androidx.camera:camera-camera2:1.0.0, androidx.camera:camera-core:1.0.0, and androidx.camera:camera-lifecycle:1.0.0 are released. Version 1.0.0 contains these commits.

Major features of 1.0.0

• CameraX supports Preview, ImageCapture, and Analysis
• CameraX manages the camera lifecycle within an easy to use API
• CameraX aims to provide a compatibility layer that fixes many issues in the Android Camera Ecosystem

Known Issues

• See Known Issue list

Version 1.0.0-rc05

April 21, 2021

androidx.camera:camera-camera2:1.0.0-rc05, androidx.camera:camera-core:1.0.0-rc05, and androidx.camera:camera-lifecycle:1.0.0-rc05 are released. Version 1.0.0-rc05 contains these commits.

Bug Fixes

• Fixed ImageCapture with flash On/Auto takes washed out images on Samsung Galaxy S7. (I30001)

Version 1.0.0-rc04

March 24, 2021

androidx.camera:camera-camera2:1.0.0-rc04, androidx.camera:camera-core:1.0.0-rc04, and androidx.camera:camera-lifecycle:1.0.0-rc04 are released. Version 1.0.0-rc04 contains these commits.

Bug Fixes

• Fixed initialization failure on UMIDIGI BISON devices (I57d9e, b/180818665)

Version 1.0.0-rc03

February 24, 2021

androidx.camera:camera-camera2:1.0.0-rc03, androidx.camera:camera-core:1.0.0-rc03, and androidx.camera:camera-lifecycle:1.0.0-rc03 are released. Version 1.0.0-rc03 contains these commits.

Bug Fixes

• Fix format error in the document of ProcessCameraProvider#getInstance
• Fixed the Robolectric test failure when setAvailableCamerasLimiter is used in CameraXConfig.
• Fixed ImageCapture performance regression by removing the validation of image saved location before taking a picture. After making this change, if the save destination is invalid, it will take longer to get the failure response because it will try to save the image after the photo is taken
• This change catches the exception when the image queue is maxed out in ImageAnalysis. So instead of crash, you may notice other use cases being frozen or sluggish. e.g. frozen/sluggish preview.
• Workaround included for intermittent corrupt image data in JPEGs on SM-G930T back-facing camera. (I52001, b/159831206)
• This change catches the exception when the image queue is maxed out in ImageAnalysis. So instead of crashing, you may notice other use cases being frozen or sluggish. e.g. frozen/sluggish preview. (Ic12da, b/175851631)
• Fixed the Robolectric test failure when setAvailableCamerasLimiter is used in CameraXConfig. (Ice307)
• Fixed ImageCapture performance regression by removing the validation of image saved location before taking a picture. After making this change, if the save destination is invalid, it will take longer to get the failure response because it will try to save the image after the photo is taken. (I1fd4e, b/177061560)
• Fixed ImageCapture performance regression with "File" type OutputFileOptions. (I5164a, b/177061560)

Version 1.0.0-rc02

January 27, 2021

androidx.camera:camera-camera2:1.0.0-rc02, androidx.camera:camera-core:1.0.0-rc02, and androidx.camera:camera-lifecycle:1.0.0-rc02 are released. Version 1.0.0-rc02 contains these commits.

Bug Fixes

• Fixed IllegalArgumentException issue happened when all preview supported sizes are smaller than 640x480 and display size is larger than 640x480. (b/150506192)

• Limit number of camera reopen attempts. While attempting to recover from certains issues when opening the camera, CameraX will no longer attempt to reopen the camera indefinitely, instead it will stop after retrying for 10 seconds.I435d2

• Fixed IllegalArgumentException issue that happened when all preview supported sizes are smaller than 640x480 and display size is larger than 640x480. (I2a63c, b/150506192)

Version 1.0.0-rc01

December 16, 2020

androidx.camera:camera-camera2:1.0.0-rc01, androidx.camera:camera-core:1.0.0-rc01, and androidx.camera:camera-lifecycle:1.0.0-rc01 are released. Version 1.0.0-rc01 contains these commits.

API Changes

• Changed CameraFilter and Camera2Filter to take in CameraInfo. (I6883d)
• Added experimental class Camera2CameraControl to allow interoperating with Camera2 APIs dynamically. (I45cf3)
• Renamed Camera2CameraInfo#fromCameraInfo to #from. (Ia2bd6)
• Added an experimental setAvailableCamerasLimiter API to CameraXConfig to allow apps to optimize the initialization latency by avoiding initializing unused cameras. (I6cf88)
• Added experimental method CameraXConfig.Builder#setMinimumLoggingLevel() to allow setting a minimum logging level for CameraX logs. When not set, it defaults to Log#DEBUG. (Ic3245)

Bug Fixes

• Workaround included for intermittent corrupt image data in JPEGs on SM-G930V back-facing camera. (I5aca5, b/159831206)
• Fixed the issue that taking pictures doesn't receive results when flash is always/on and the environment is dark on Samsung SM-A716 devices. (If98b2, b/172036589)
• Fixed the issue that the Preview cannot be stopped by calling Preview.setSurfaceProvider(null). (I3ac18)
• Fixed orientation issue when capturing 4:3 images on some devices. (I0e3fb, b/171492111)

Camera Camera2, Core, & Lifecycle Version 1.0.0-beta12

November 11, 2020

androidx.camera:camera-camera2:1.0.0-beta12, androidx.camera:camera-core:1.0.0-beta12, and androidx.camera:camera-lifecycle:1.0.0-beta12 are released. Version 1.0.0-beta12 contains these commits.

Bug Fixes

• Disabled auto flash on Samsung A3 devices to fix the crash when taking a photo with auto flash AE mode on Samsung A3 devices. (Ia5fe3, b/157535165)
• Fixed an issue where the preview was stretched on Nexus 4 devices running Android L (API levels 21 and 22). (I4d407, b/158749159)
• OnImageCapturedCallback#onCaptureSuccess base class implementation no longer closes the image. This is for preventing unexpected behavior to developers. Developers should not rely on super.onCaptureSuccess to close the image. (Ifbf9c)
• The androidx variant of the Experimental annotation has been deprecated to provide parity with Kotlin. It has been replaced by the RequiresOptIn annotation, and the Java-facing linter has been updated to support both the new Kotlin annotation and the new androidx variant. (I52495, b/151331381)

Camera-Camera2 Version 1.0.0-beta11

October 14, 2020

androidx.camera:camera-camera2:1.0.0-beta11 is released. Version 1.0.0-beta11 contains these commits.

New Features

• Supports android 11 CONTROL_ZOOM_RATIO API for zoom on android 11 or later devices which contains valid CONTROL_ZOOM_RATIO_RANGE. (I62cc6)

Bug Fixes

• Fixed the NumberFormatException issue happened when the camera Id is a non-integer camera Id. (Ib2228)
• Improved the latency of CameraX initialization and bindToLifecycle (I61dc5)
• Creation of UseCases do not require initialization of CameraX to complete. All implementation specific configurations are set on UseCase once it is attached to a Camera instance which for the public API is ProcessCameraProvider.bindToLifecycle(). (Ia5411)
• <UseCase>.getTargetRotation() will return Surface.ROTATION_0 if called before being attached to a Camera instance unless a targetRotation has been set on the Builder or UseCase. (I80fcd)

Camera-Core Version 1.0.0-beta11

October 14, 2020

androidx.camera:camera-core:1.0.0-beta11 is released. Version 1.0.0-beta11 contains these commits.

New Features - Supports android 11 CONTROL_ZOOM_RATIO API for zoom on android 11 or later devices which contains valid CONTROL_ZOOM_RATIO_RANGE. (I62cc6)

Bug Fixes

• Fixed the NumberFormatException issue happened when the camera Id is a non-integer camera Id. (Ib2228)
• Creation of UseCases do not require initialization of CameraX to complete. All implementation specific configurations are set on UseCase once it is attached to a Camera instance which for the public API is ProcessCameraProvider.bindToLifecycle(). (Ia5411)
• <UseCase>.getTargetRotation() will return Surface.ROTATION_0 if called before being attached to a Camera instance unless a targetRotation has been set on the Builder or UseCase. (I80fcd)

Camera-Core Version 1.0.0-beta10

September 23, 2020

androidx.camera:camera-core:1.0.0-beta10 is released. Version 1.0.0-beta10 contains these commits.

Bug Fixes

• Fix bug in validating file save destination for image capture (I8c565, b/167697553)

Camera-Camera2 Version 1.0.0-beta10

September 23, 2020

androidx.camera:camera-camera2:1.0.0-beta10 is released. Version 1.0.0-beta10 contains these commits.

Bug Fixes

• Release to support Camera-Core 1.0.0-beta10

Camera-Camera2 Version 1.0.0-beta09

September 16, 2020

androidx.camera:camera-camera2:1.0.0-beta09 is released. Version 1.0.0-beta09 contains these commits.

API Changes

• Instead of providing static methods, Camera2CameraInfo takes in a CameraInfo instance when created to retrieve Camera2 related information from. (I5b844)

Bug Fixes

• Fixed target aspect ratio issue on tablet devices. A 16:9 size should be selected when the target aspect ratio is set as AspectRatio.RATIO_16_9. (Ib7fcf, b/151969438)
• Throw an InitializationException to make the app be able to gracefully handle the AssertionError happened when creating CameraCharacteristics. (I89c8c, b/160524721)
• Added experimental interfaces for ExposureCompensation (If96c7)

Camera-Core Version 1.0.0-beta09

September 16, 2020

androidx.camera:camera-core:1.0.0-beta09 is released. Version 1.0.0-beta09 contains these commits.

API Changes

• fixed the bug where viewport is marked as non-null on UseCaseGroup. Developers should be able to create a viewport without setting a viewport. (Ie3d2e)
• Added experimental interfaces for ExposureCompensation (If96c7)
• Allow arbitrary target rotation for Preview. The transformation info is calculated and returned to user on-the-fly via a new TranformationInfoListener callback. (I21470)

Bug Fixes

• Fixed the issue that flash on some devices would not turn off. It happens when the flash mode is set to FLASH_MODE_ON to take a picture, and is changed to FLASH_MODE_OFF when the flash is fired. The symptom is like torch mode enabled. (Ib4451, b/162568128)
• Forced PreviewView to use TextureView if extension effect is enabled and the vendor library implementation needs to do a special process on the output surface. (I0c3cc)
• Fixed the activity/fragment leak when an activity/fragment context is passed to ProcessCameraProvider.getInstance(Context).

Known Issues

• When ViewPort is set, the crop rect of ImageCapture might be incorrect on devices who rotate the image buffer in HAL. This will be fixed in the next release.

Camera-Camera2 Version 1.0.0-beta08

August 19, 2020

androidx.camera:camera-camera2:1.0.0-beta08 is released. Version 1.0.0-beta08 contains these commits.

Bug Fixes

• Optimized bindToLifecycle to run quickly on the main thread. (I1d57e)
• DisplayOrientedMeteringPointFactory takes in a CameraInfo instance instead of a CameraSelector so there is a direct mapping to which Camera the factory will be generating points for. All classes which use DisplayOrientedMeteringPointFactory also take in a CameraInfo instance instead of CameraSelector. (I400c1)
• Fixed auto-resolution aspect ratio size grouping issue that a 16:9 mod16 size (864x480) is selected when the target resolution setting is 2016x1080 and there is another 1920x1080 16:9 size supported. (I53167, b/159363774)
• Fix the CameraControl issue where it’s unable to work by a race condition (I2279f, b/152333890, b/160714166)

Camera-Core Version 1.0.0-beta08

August 19, 2020

androidx.camera:camera-core:1.0.0-beta08 is released. Version 1.0.0-beta08 contains these commits.

API Changes

• DisplayOrientedMeteringPointFactory takes in a CameraInfo instance instead of a CameraSelector so there is a direct mapping to which Camera the factory will be generating points for. All classes which use DisplayOrientedMeteringPointFactory also take in a CameraInfo instance instead of CameraSelector. (I400c1)

Bug Fixes

• For image capture, overwrite the flip horizontal flag in metadata based on camera direction. (I28499)
• Initialization should no longer crash when using a Context that does not return an Application object from Context.getApplicationContext(). (I3d3c9, b/160817073)

Camera-Camera2 Version 1.0.0-beta07

July 22, 2020

androidx.camera:camera-camera2:1.0.0-beta07 is released. Version 1.0.0-beta07 contains these commits.

Bug Fixes

• Fixed the issue that the preview is stretched on android 5.0 legacy device. (I0c03a)
• Excluded some JPEG supported sizes that will cause WYSIWYG issue on some devices. (Ib5128)

Camera-Core Version 1.0.0-beta07

July 22, 2020

androidx.camera:camera-core:1.0.0-beta07 is released. Version 1.0.0-beta07 contains these commits.

API Changes

• Merge FIT_CENTER, FIT_START, and FIT_END fit style with FIT. FITmeans that the returned crop rect will be the max possible sensor rect. (Ia73c3)
• Preview's crop rect is configured by viewport. Only the area covered by the crop rect should be visible to end users. (I142a4)

Bug Fixes

• Fixed the issue that the preview is stretched on android 5.0 legacy device. (I0c03a)
• Fixed the ConcurrentModificationException exception issue when unbinding use cases. (I371c0)

Camera-Camera2 Version 1.0.0-beta06

June 24, 2020

androidx.camera:camera-camera2:1.0.0-beta06 is released. Version 1.0.0-beta06 contains these commits.

API Changes

• Added experimental interfaces for filtering cameras by camera ID and CameraCharacteristics. (I28f61)

Bug Fixes

• Fixed the issue where startFocusAndMetering fails to focus successfully on Samsung Galaxy S7. (If3be7, b/159039233)
• Fix the camera can't be closed after quit the app. (I7a7b3)
• Fix repeated camera switching breaks preview when using SurfaceView implementation of PreviewView (I920ce)
• CameraControl#startFocusAndMetering will fail if none of the specified MeteringPoint can generate valid metering rectangles. (Id53ce)

Camera-Core Version 1.0.0-beta06

June 24, 2020

androidx.camera:camera-core:1.0.0-beta06 is released. Version 1.0.0-beta06 contains these commits.

API Changes

• Added experimental interfaces for filtering cameras by camera ID and CameraCharacteristics. (I28f61)

Bug Fixes

• CameraX can now be configured with ProcessCameraProvider#configureInstance() before calling ProcessCameraProvider#getInstance(). This allows for customization of the CameraXConfig without requiring implementing CameraXConfig.Provider in the app's Application class. (Ia1a8d)
• CameraControl#startFocusAndMetering will fail if none of the specified MeteringPoint can generate valid metering rectangles. (Id53ce)

Camera-Camera2 Version 1.0.0-beta05

June 10, 2020

androidx.camera:camera-camera2:1.0.0-beta05 is released. Version 1.0.0-beta05 contains these commits.

Bug Fixes

• Fix the crash on app startup when initialising CameraX while phone is in Do Not Disturb mode. An InitializationException contains a CameraUnavailableException that will be set to the ListenableFuture of the intialization result instead of crashing the application. (I9909a, b/149413835)
• Fixed the crash when calling startFocusAndMetering on devices that CONTROL_AF_STATE is null. (Ife55e, b/157084254)

Camera-Core Version 1.0.0-beta05

June 10, 2020

androidx.camera:camera-core:1.0.0-beta05 is released. Version 1.0.0-beta05 contains these commits.

API Changes

• Fix the crash on app startup when initialising CameraX while phone is in Do Not Disturb mode. An InitializationException contains a CameraUnavailableException will be set to the ListenableFuture of the intialization result instead of crashing the application. (I9909a, b/149413835)

Bug Fixes

• Updated javadocs of setTargetResolution and setTargetRotation. (Iae16f)

Camera-Camera2 Version 1.0.0-beta04

May 27, 2020

androidx.camera:camera-camera2:1.0.0-beta04 is released. Version 1.0.0-beta04 contains these commits.

Bug Fixes

• Allowed applications to set any camera2 capture request parameters via Camera2Interop without causing a crash. Please note that if there are issues that arise as a result of overriding parameters. Stability and behaviour are not guaranteed when overriding parameters using Camera2Interop. (Ibe5a1, b/149103700)
• Auto-initialization is fixed when using an app on a device that is using a pseudo-locale. (I3bef3, b/154767663)
• Converted error log related to detached use case to a debug log on Camera2CameraImpl. (I1a565, b/154422490)
• Fixed issue where image taken is too dark sometimes even though flash is fired. (I5d9fa, b/149729613)
• Fix bug where buffer in ImageProxy from ImageCapture was not rewound (I0c455, b/153249512)
• Fixed the issues where binding ImageCapture only: (1) Failed to take photos with MAX_QUALITY; (2) Generated bad Image quality because auto exposure does not work. (I17782, b/145326998)
• Improved reliability of re-opening camera when CameraX is disconnected by another process or codepath stealing the camera (I1fbc3, b/153714651)

Camera-Core Version 1.0.0-beta04

May 27, 2020

androidx.camera:camera-core:1.0.0-beta04 is released. Version 1.0.0-beta04 contains these commits.

API Changes

• Adds an experimental API, CameraXConfig.Builder#setSchedulerHandler() for setting the handler used internally by the CameraX camera stack. This new API along with CameraXConfig.Builder#setCameraExecutor() should allow full control over the threads being used by the CameraX camera stack. (I7bf32, b/121160431)

Bug Fixes

• Fixes crash in ImageAnalysis where the ImageProxy is accessed after the ImageReaderProxy has been closed. This also makes it so that all ImageProxy received by the Analyzer must be closed before the ImageReaderProxy will be closed. (I4b299, b/145956416, b/154155377, b/156357269)
• Removed the CameraInfo parameter from PreviewView#createSurfaceProvider(), PreviewView now internally retrieves it from the SurfaceRequest. (If18f0, b/154652477)
• Auto-initialization is fixed when using an app on a device that is using a pseudo-locale. (I3bef3, b/154767663)
• Fixed issue where image taken is too dark sometimes even though flash is fired. (I5d9fa, b/149729613)
• Fix issue with ImageAnalysis where multiple calls to setAnalyzer/clearAnalyzer resulted in the analyzer not receiving images to analyze. (I6169f, b/151605317, b/153514544)
• Fix bug where buffer in ImageProxy from ImageCapture was not rewound (I0c455, b/153249512)
• Fixed the issue that the first camera in the supported list from CameraManager is not always selected to use. (I4c624, b/153418028)
• Fixed intermittent crash caused by setting Preview.SurfaceProvider not releasing the previously requested surface. “java.lang.IllegalStateException: Camera surface session should only fail with request cancellation” (I8e4e7, b/155936225)

Camera-Camera2 Version 1.0.0-beta03

April 15, 2020

androidx.camera:camera-camera2:1.0.0-beta03 is released. Version 1.0.0-beta03 contains these commits.

Bug Fixes

• Fixes to support the release of camera-core

Camera-Core Version 1.0.0-beta03

April 15, 2020

androidx.camera:camera-core:1.0.0-beta03 is released. Version 1.0.0-beta03 contains these commits.

Bug Fixes

• Fixed regression from beta03 where calling bindToLifecycle() with zero UseCases would cause a thrown exception. This prevented retrieval of a Camera without binding a UseCase.

Camera-Camera2 Version 1.0.0-beta02

April 1, 2020

androidx.camera:camera-camera2:1.0.0-beta02 is released. Version 1.0.0-beta02 contains these commits.

Bug Fixes

• Fixed the ImageInfo.getRotationDegrees() from the ImageProxy produced by ImageCapture so that it matches the EXIF orientation rotational value. (Id4281, b/150802561)
• Explicit ordering of CameraX dependencies within build.gradle is no longer required to use the default CameraX/Camera2 implementation. For cases where declaring strict dependencies is required, all CameraX dependencies can now be included in the build file. (I46e88)
• Fixed the IllegalArgumentException issue happening on the devices where the display size is smaller than 640x480. (Ife3f2, b/150506192)
• Fixed bindToLifecycle so that it only modifies the UseCase if it successfully binds. Previously when calling bindToLifecycle in order to do resolution calculations the UseCase is updated. Now it no longer needs to update the UseCase to do the calculations (I78d9e)

Camera-Core Version 1.0.0-beta02

April 1, 2020

androidx.camera:camera-core:1.0.0-beta02 is released. Version 1.0.0-beta02 contains these commits.

Bug Fixes

• Fixed the ImageInfo.getRotationDegrees() from the ImageProxy produced by ImageCapture so that it matches the EXIF orientation rotational value. (Id4281, b/150802561)
• Fixed bindToLifecycle so that it only modifies the UseCase if it successfully binds. Previously when calling bindToLifecycle in order to do resolution calculations the UseCase is updated. Now it no longer needs to update the UseCase to do the calculations (I78d9e)
• Fixed an issue where the Preview use case's capture session wasn't being updated when the preview surface changed after calling Preview.setSurfaceProvider() more than once.

Camera-Camera2 Version 1.0.0-beta01

February 26, 2020

androidx.camera:camera-camera2:1.0.0-beta01 is released. Version 1.0.0-beta01 contains these commits.

Bug Fixes

• Renamed SurfaceRequest.setSurface(Surface) to SurfaceRequest.provideSurface(Surface), and SurfaceRequest.setWillNotComplete() to SurfaceRequest.willNotProvideSurface(). (I224fe)
• Fixed an issue with the aspect ratio of a saved image not being correct after changing the target rotation value using ImageCapture.setTargetRotation(). (I474ea, b/148763432)
• Fixed initialization of app variants with ProGuard enabled by preserving the flag that sets the default CameraXConfig provider. (I2d6c1)

Camera-Core Version 1.0.0-beta01

February 26, 2020

androidx.camera:camera-core:1.0.0-beta01 is released. Version 1.0.0-beta01 contains these commits.

API Changes

• Replaced the ListenableFuture on SurfaceRequest.provideSurface() with an Executor and Callback. This simplifies the API by no longer requiring handling of exceptions on provideSurface() and enforces that the provideSurface() callback cannot be cancelled. This is to prevent crashes on older devices caused by prematurely releasing surfaces. The SurfaceRequest.Result object is now used for tracking how a SurfaceRequest uses the provided Surface. (I7854b)
• Renamed SurfaceRequest.setSurface(Surface) to SurfaceRequest.provideSurface(Surface) and SurfaceRequest.setWillNotComplete() to SurfaceRequest.willNotProvideSurface(). (I224fe)

Bug Fixes

• Fixed an issue with the aspect ratio of a saved image not being correct after changing the target rotation value using ImageCapture.setTargetRotation(). (I474ea, b/148763432)
• Fixed initialization of app variants with ProGuard enabled by preserving the flag that sets the default CameraXConfig provider. (I2d6c1)
• Updated documentation for flash mode APIs to include possible values. (I4a3ec)

Camera-Camera2 Version 1.0.0-alpha10

February 10, 2020

androidx.camera:camera-camera2:1.0.0-alpha10 is released. Version 1.0.0-alpha10 contains these commits.

Bug Fixes

• Improved stability on INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY devices by ensuring Surfaces are only retained for duration of use by Camera2. (I9dac2)
• Fixed underexposed preview issue on LEGACY devices by adjusting CONTROL_AE_TARGET_FPS_RANGE properly. (1224638)

Camera-Core Version 1.0.0-alpha10

February 10, 2020

androidx.camera:camera-core:1.0.0-alpha10 is released. Version 1.0.0-alpha10 contains these commits.

API Changes

• Updated ImageCapture to allow saving images to Uri and OutputStream. Combined overloaded takePicture methods into one. Updated test app to use Uri as the canonical example. (Ia3bec)
• Preview.PreviewSurfaceProvider has been renamed to Preview.SurfaceProvider. SurfaceProviders no longer require developers to create their own ListenableFuture, and providing a Surface is now done through a new SurfaceRequest object. The Preview.getPreviewSurfaceProvider() method has been removed due to its potential for misuse when Preview is paired with other classes such as PreviewView. (I20105)
• Added getTargetRotation() and getTargetName() to Preview. (Iceee7)
• Added getTargetRotation(), getBackpressureStrategy(), and getImageQueueDepth() in ImageAnalysis. (I9d6d9)
• Added getTargetRotation() and getCaptureMode() in ImageCapture() (I5bc17)
• The arguments that were previously passed in ImageCapture.OnImageSavedCallback.onError() and ImageCapture.OnImageCapturedCallback.onError() have now been replaced by a single argument ImageCaptureException, which still contains all the information that was previously passed.
• The file argument previously passed in ImageCapture.OnImageSavedCallback.onImageSaved() has been removed. (I750d2)
• Preview and ImageCapture classes are now marked final. (I2500b)
• API updated, with getZoomRatio(), getMaxZoomRatio(), getMinZoomRatio(), and getLinearZoom() methods of CameraInfo merging into getZoomState() which returns a ZoomState instance. (Ib19fe)
• Removed API fields OPTION_TARGET_CLASS and OPTION_TARGET_NAME from CameraXConfig as they are intended for internal library use only. Removed constructor for CameraXConfig.Builder. (I96912)
• Removed requirement that app must extend Application in order to initialize CameraX. CameraX will now be initialized with a default Camera2 configuration as long as the camera-camera2 artifact is included in the application's build.gradle. (I58ff5) (b/146923574)

Camera-Camera2 Version 1.0.0-alpha09

January 22, 2020

androidx.camera:camera-camera2:1.0.0-alpha09 is released. Version 1.0.0-alpha09 contains these commits.

API changes

• Add camera2 interop path for extracting a Camera2 camera ID. You can extract the camera ID from CameraInfo using Camera2CameraInfo.extractCameraId(). The following code sample shows how to use this:

  Camera camera = provider.bindToLifecycle(...);
  String cameraId =
      Camera2CameraInfo.extractCameraId(camera.getCameraInfo());
  

  The Camera2CameraInfo class requires the ExperimentalCamera2Interop markerClass.

Camera-Core Version 1.0.0-alpha09

January 22, 2020

androidx.camera:camera-core:1.0.0-alpha09 is released. Version 1.0.0-alpha09 contains these commits.

API changes

• The SurfaceOrientedMeteringPointFactory parameter useCaseForSurface was renamed to useCaseForAspectRatio and the reference documentation was expanded.
• FocusMeteringAction.Builder.from() methods are replaced by the constructors FocusMeteringAction.Builder().
• Removed DisplayOrientedMeteringPointFactory(android.content.Context, androidx.camera.core.CameraSelector, float, float). Applications should use the constructor that takes a Display parameter and pass in the current display.
• Javadoc improvements for focus and metering APIs regarding MeteringMode and 3A Flags, and usage of Display parameter.
• Expanded the reference documentation for setZoomRatio and setLinearZoom.

Bug fixes

• Fixed issues when closing then opening cameras resulting in "Precondition" check failure.
• Fixed a ConcurrentModificationException that could occur when using torch and zoom APIs.
• Fixed issue to now select resolutions closer to requested resolution when a mod16 dimensions size is available.
• startFocusMetering and cancelFocusMetering APIs now behave as documented, with correct timing and potentially returning errors when they occur.
• Fixed issue when a specific target resolution was requested with a crop aspect ratio on a device that doesn’t support such sizes. Now, a non-cropped size of sufficient resolution to bound the original request will be selected when available.

Camera-Camera2 Version 1.0.0-alpha08

December 18, 2019

androidx.camera:camera-camera2:1.0.0-alpha08 is released. Version 1.0.0-alpha08 contains these commits.

Known Issues

• Not all Camera2 capture request options work when using the Camera2 interop. If the requested option is not supported, the session fails to start and an error like this may occur: 09-09 14:04:13.643 10117 26020 26036 E AndroidRuntime: java.lang.IllegalArgumentException: Unsupported session configuration combination

Bug Fixes

• Fixed an issue in which a preview black screen occurred after rotating or switching the camera for API Levels 21 and 22.

API Changes

• Experimental: Added a camera2 interop path for extracting the Camera ID.

Camera-Core Version 1.0.0-alpha08

December 18, 2019

androidx.camera:camera-core:1.0.0-alpha08 is released. Version 1.0.0-alpha08 contains these commits.

Known Issues

• Apps using the PreviewView or CameraView may have the wrong aspect ratio preview. This happens after pause or resume on some FULL devices, such as the Pixel2.

Bug Fixes

• Updated the documentation for FocusMeteringAction and CameraControl.
• Implemented TorchControl for enableTorch() and getTorchState().

API Changes

• Hid IntDefs and moved IntDef constants outside of the IntDef definition.
• Moved rotationDegrees from class OnImageCaptureCallback to ImageInfo.
• Moved rotationDegrees from class Analyzer to ImageInfo.

Camera-Camera2 Version 1.0.0-alpha07

December 4, 2019

androidx.camera:camera-camera2:1.0.0-alpha07 is released. Version 1.0.0-alpha07 of camera-camera2 contains these commits

• Camera2Config is now available for use with initializing and configuring a Camera2-based implementation for CameraX. More details on how to use this in initialization are in the camera-core section of the release notes.
• The camera2 interop functionally is now marked as experimental and moved to a separate package, androidx.camera.camera2.interop.

Camera-Core Version 1.0.0-alpha07

December 4, 2019

androidx.camera:camera-core:1.0.0-alpha07 is released. Version 1.0.0-alpha07 of camera-core contains these commits

Note that there are some substantial changes in this Alpha release as we prepare for Beta. We recommend you review the changes and share any feedback you may have on the CameraX Google group. For those developers using CameraX in apps that are on the Play store, we recommend waiting for the formal Beta release before upgrading the library within your applications.

API changes

• Important: CameraX initialization has changed. Applications should implement CameraXConfig.Provider, and use the default Camera2Config provided by androidx.camera.camera2. A typical usage is:

  import androidx.camera.camera2.Camera2Config
  import androidx.camera.core.CameraXConfig
  
  public class MyCameraXApplication : Application(),  CameraXConfig.Provider {
      override fun getCameraXConfig(): CameraXConfig {
              return Camera2Config.defaultConfig(this)
      }
  }
  

• The CameraX class has been removed. The bindToLifecycle(), unbind(), unbindAll(), isBound(), and hasCamera() previously provided by the CameraX class call are now available via the ProcessCameraProvider.

• A per-process instance of ProcessCameraProvider is obtained asynchronously using the static method ProcessCameraProvider.getInstance(), which returns a listenable future, which provides the ProcessCameraProvider on completion. Here it is shown in onCreate() for a typical usage. You can place calls to getInstance() later in the activity’s lifecycle to defer initialization latency to a later time (such as when a user action opens a camera UI).

  import androidx.camera.lifecycle.ProcessCameraProvider
  import com.google.common.util.concurrent.ListenableFuture
  
  class MainActivity : AppCompatActivity() {
     private lateinit var cameraProviderFuture : ListenableFuture<ProcessCameraProvider>
     override fun onCreate(savedInstanceState: Bundle?) {
         cameraProviderFuture = ProcessCameraProvider.getInstance(this);
    }
  

• A listener can be added to the ListenableFuture returned by getInstance(). This ensures the camera provider can be retrieved from the Future without blocking on Future.get()

  cameraProviderFuture.addListener(Runnable {
    val cameraProvider = cameraProviderFuture.get()
    cameraProvider.bindToLifecycle(...)
  }, ContextCompat.getMainExecutor(this))
  

• Camera selection is now done by a camera selector, instead of per-use case

  val cameraSelector = CameraSelector.Builder().requireLensFacing(LensFacing.BACK).build()
  

• CameraProvider.bindToLifecycle is given the lifecycle owner, the camera selector, and use cases, which are then bound to the given lifecycle owner and run for the selected camera.

  cameraProvider.bindToLifecycle(this as LifecycleOwner,
         cameraSelector, preview, imageAnalysis)
  

• Use case “Config” classes are removed. Instead, build use cases directly, setting options on each use case builder. For example:

  preview = Preview.Builder().setTargetAspectRatio(AspectRatio.RATIO_16_9).build()
  

• The Preview use case has been updated to accept a surface created and managed by the application to ensure Android best practices. It is highly recommended to use the PreviewView view class provided in the camera-view package.

  preview.setPreviewSurfaceProvider(previewView.previewSurfaceProvider)
  

• See documentation for attaching an app-managed surface. In these cases the app manages the lifecycle of the surface.

• Important: The ImageAnalysis Analyzer method implementation must call image.close() on received images when finished using them. Otherwise, new images may not be received or the camera may stall, depending on back pressure setting. Refer to the reference docs for details.

• ImageAnalysis ImageReaderMode is now changed to a backpressure strategy intdef.

• ImageProxy.getImage() is marked as experimental. Applications should annotate usage for example via @androidx.camera.core.ExperimentalGetImage

• The UIThread annotation requirement for the Analyzer has been removed.

• The ImageAnalysis.clearAnalyzer() function is added for removing an analyzer.

• Listeners with more than 1 method have been renamed to Callback:

  • ImageCapture.OnImageCapturedListener is now ImageCapture.OnImageCapturedCallback
  • ImageCapture.OnImageSavedListener is now ImageCapture.OnImageSavedCallback
  • VideoCapture.OnVideoSavedListener is now VideoCapture.OnVideoSavedCallback

• Enums have changed to IntDef

• Zoom controls have been added:

  • CameraControl.setLinearZoom()
  • CameraControl.setZoomRatio()
  • CameraInfo.getLinearZoom()
  • CameraInfo.getMaxZoomRatio()
  • CameraInfo.getZoomRatio()

• CameraInfo.hasFlashUnit() is added to determine if flash/torch hardware is present.

• CameraInfo.isFlashAvailable() has been removed. Torch overrides flash functionality. More detail is included in the reference documentation.

• ImageCapture.Metadata fields are replaced by get/set/is accessors.

• startFocusMetering and cancelFocusMetering now return ListenableFutures which represent the asynchronous operation of the call.

• MeteringPoints are now functioning as handles to metering actions, and are produced by factories. Apps should use the existing factories rather than custom factories.

Fixed issues

• Fixed issue when taking a picture on resuming (after a previous pause had take pictures pending completion).
• Known Issue: CameraControl.enableTorch() is functional but the returned ListenableFuture<Void> is always an immediate complete(success) future, even if there is no flash unit. Future versions will fix this to the final behavior: When there is no flash unit, enableTorch(true) fails immediately (won't send request to CaptureSession), and TorchState remain Off.
• Known Issue: startFocusAndMetering and cancelFocusAndMetering start and cancel focus metering, but return an immediately completed (success) future not representing the documented behavior. The FocusMeteringResult from ListenableFuture<FocusMeteringResult> CameraControl.startFocusAndMetering() is a fake result which isFocusSuccessful() and is always "false," differing from intended, documented behavior.
• Known Issue: A metering point factory for use with PreviewView touch events is being developed. For now, apps connecting custom managed surfaces can use the existing metering point factories, and otherwise no touch focus functionality is available for PreviewView.

Camera-Camera2 and Camera-Core Version 1.0.0-alpha06

October 9, 2019

androidx.camera:camera-camera2:1.0.0-alpha06 and androidx.camera:camera-core:1.0.0-alpha06 are released. These are the commits included in camera-camera2:1.0.0-alpha06 and these are the commits included in camera-core:1.0.0-alpha06.

New features

Changes to setting aspect ratios:

• setTargetAspectRatioMode() was added and accepts an enum argument. This sets the Aspect Ratio Mode with options RATIO_4_3 or RATIO_16_9 instead of an arbitrary aspect ratio. This closer reflects the fact that only certain aspect ratios are provided from the camera, rather than any arbitrary ratio.
  • Currently, the only available ratios are 16:9 and 4:3. In the case of 1:1, only certain devices have this available from the camera, and then only at limited resolutions. Applications designing a 1:1 interface or processing should use the more flexible 16:9 or 4:3 choices and crop the display or process a subregion.
  • These aspect ratios are oriented to use the maximum sensor area.
• getTargetAspectRatio() was added to use case config APIs, returning the aspect ratio the use case output is targeted for.
• The method setTargetAspectRatio(Rational aspectRatio) has been changed for ImageCapture to setTargetAspectRatioCustom(Rational aspectRatio). When set, the ImageCapture output crops accordingly.

Executor APIs

• The following functions accept an executor parameter, which allows the app to control which executor the function runs on.
  • Preview.setOnPreviewOutputUpdateListener() API. If the executor is not present for that function, it executes on the main thread.
  • Preview.setOnPreviewOutputUpdateListener
  • FocusMeteringAction.Builder.setAutoFocusCallback
  • ImageAnalysis.setAnalyzer
  • ImageCapture.takePicture
  • CameraView.takePicture
  • CameraView.startRecording
  • VideoCapture.startRecording

CameraInfo added with check Flash Available and Sensor Rotation APIs

• Added CameraInfo and a getCameraInfo method, which allows apps to check if a lens facing CameraInfo is available and if a flash is available on that camera. For example:

  try {
      CameraInfo cameraInfo = CameraX.getCameraInfo(currentCameraLensFacing);
      LiveData<Boolean> isFlashAvailable = cameraInfo.isFlashAvailable();
      flashToggle.setVisibility(isFlashAvailable.getValue() ? View.VISIBLE : View.INVISIBLE);
  } catch (CameraInfoUnavailableException e) {
      Log.w(TAG, "Cannot get flash available information", e);
      flashToggle.setVisibility(View.VISIBLE);
  }
  

• CameraInfo.getSensorRotationDegrees() was added. It provides the camera sensor orientation relative to the device’s natural orientation, or for convenience, relative to an orientation described by a Surface rotation (which describes an orientation relative to natural orientation).

API changes and bug fixes

• Aspect Ratios: For each use case, applications should call only one of setTargetResolution() or setTargetAspectRatio(). Calling both on the same builder returns an error.
  • In general it’s recommended to use setTargetAspectRatio() based on the application’s UI design. Specific resolutions are based on the use case. For example, preview is near screen resolutions and image capture provides high resolution stills. See the automatic resolutions table for more information.
  • Use setTargetResolution() for more specific cases, such as when minimum (to save computation) or maximum resolutions (for processing details) are required.
• Executor API: Removed the setCallbackHandler() call from use case configuration APIs. Instead, applications can set the executor as a parameter in various other APIs that set a callback.
• Updated null annotations for various functions.
• Fixed an issue that caused java.lang.IllegalStateException at Camera$StateCallback.onError to be thrown when opening the camera.
• Fixed issue where resolutions would be selected that were too small (less than 640x480) when app is requesting larger or default resolutions resulting in a blocky or blurry preview image. Applications that specifically need smaller resolutions can explicitly request them.
• Fixed an issue where the camera would show black screen (failed to start the camera) after returning from an intent that launched another camera application.
• Fixed a bug that threw the following error when apps are repeatedly started or stopped; java.lang.IllegalArgumentException: CaptureRequest contains unconfigured Input/Output Surface!
• Fixed the following error that occurs when disabling ImageAnalysis: java.lang.IllegalStateException: maxImages (4) has already been acquired, call #close before acquiring more.
• Added additional tests for camera disconnect flow.
• Improved test system robustness when running back-to-back camera tests.

Camera-Camera2 and Camera-Core Version 1.0.0-alpha05

September 5, 2019

androidx.camera:camera-camera2:1.0.0-alpha05 and androidx.camera:camera-core:1.0.0-alpha05 are released. These are the commits included in camera-camera2:1.0.0-alpha05 and these are the commits included camera-core:1.0.0-alpha05.

• API Change: Renamed use case error variables:

  • ImageCapture.UseCaseError is renamed ImageCapture.ImageCaptureError
  • VideoCapture.UseCaseError is renamed VideoCapture.VideoCaptureError

• Added CameraControl API w/Tap-to-Focus APIs

  • Added API to get a CameraControl from CameraX for a camera, selected by lens facing:

    CameraX.getCameraControl(LensFacing lensFacing)

  • Added MeteringPointFactory, MeteringPoint, MeteringMode, and FocusMeteringAction to run Tap-to-Focus:

    MeteringPointFactory factory = new SensorOrientedMeteringPointFactory(width, height);
    MeteringPoint point = factory.createPoint(x, y);
    FocusMeteringAction action = FocusMeteringAction.Builder.from(point,
                                     MeteringMode.AF_ONLY)
        .addPoint(point2, MeteringMode.AE_ONLY) // could have many
        .setAutoFocusCallback(new OnAutoFocusListener(){
            public void onFocusCompleted(boolean isSuccess) {
            }
        })
        // auto calling cancelFocusAndMetering in 5 sec.
        .setAutoCancelDuration(5, TimeUnit.Second)
        .build();
    

  • Added API for CameraControl to start and cancel focus metering:

    getCameraControl(lensFacing).startFocusAndMetering(action); getCameraControl(lensFacing).cancelFocusAndMetering();

  • Added APIs for Metering Point Factories that assist translating tap coordinates to sensor coordinates, based on view classes:

    MeteringPointFactory factory = new TextureViewMeteringPointFactory(textureView); MeteringPointFactory factory = new DisplayOrientedMeteringPointFactory(context, lensFacing, viewWidth, viewHeight);

• Enforce calling the following methods on the Main (UI) thread, throwing an IllegalStateException when they are not. Future versions will allow usage on other threads and ensure serialization.

  • CameraX.bindToLifecycle()
  • CameraX.unbind()
  • CameraX.unbindAll()
  • ImageAnalysis.setAnalyzer()
  • ImageAnalysis.getAnalyzer()
  • ImageAnalysis.removeAnalyzer()
  • Preview.removePreviewOutputListener()
  • Preview.getOnPreviewOutputUpdateListener()
  • Preview.setOnPreviewOutputUpdateListener()

• Various config settings now accept null parameters and corresponding getters may return null.

• Fixed issue when testing on emulators that do not support AF/AE/AWB settings.

• Fixed crash bug on rotation while analyzing image.

• Fixed bug where preview appears black on start (no camera data), after rotation or switching between front and back cameras.

• Removed testing for multiple concurrent image analysis use cases. To ensure compatibility, applications should only attach a single image analysis use case.

• Added initial robolectric tests for fake camera in camera-testing suite (WIP).

• Camera2Inititalizer test removed, as its coverage was unclear/misleading.

Camera-Camera2 and Camera-Core Version 1.0.0-alpha04

August 7, 2019

androidx.camera:camera-camera2:1.0.0-alpha04 and androidx.camera:camera-core:1.0.0-alpha04 are released. Version 1.0.0-alpha04 contains these commits.

New Features

Changes to Aspect Ratio and Resolution selection

CameraX's goal is to successfully initialize a camera session. This means CameraX compromises on resolution/aspect ratios based on device capability, in order to start a capture session as its first goal, and so exact requests may not be honored. This may be due to:

• Devices not supporting the requested resolution
• Compatibility issues such as on LEGACY devices where certain resolutions must be used to operate correctly
• On some devices, certain formats are only available at certain aspect ratios
• A preference for a “nearest mod16” for JPEG or video encoding. See CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP

Although CameraX creates and manages the session, you should always check the returned image sizes on the use case output in your code and adjust accordingly.

Some changes have been made for setting resolutions and aspect ratios, intended to make the API more clear:

• Preview use case is now considered to have a default 4:3 aspect ratio when none is set.
• When CameraX internally considers changes to requested resolutions and aspect ratios based on device capability, it first tries to maintain the same aspect ratio (as determined by any of setTargetAspectRatio or setTargetResolution calls)
• A “Nearest mod16” version of the resolution is considered as the same aspect ratio.

ImageAnalysis Non-Blocking Mode

• The behaviour of ImageReaderMode.ACQUIRE_LATEST_IMAGE is now non-blocking. It acquires the latest image in the queue, but discards unused images continuously to allow the camera pipeline to avoid blocking.
• The analyzer can hold a single image indefinitely without stalling the pipeline.
• If the application provides an executor which then blocks, the ImageAnalysis use case blocks.
• The default executor set internally behaves as a non-blocking executor.

Bug Fixes

• Fixed timeout issues waiting for 3A convergence when capturing images on devices with no auto-focus, auto exposure, and auto-whitebalance
• Fixed issue when rapidly taking pictures with ImageCapture. Fixes error: java.lang.IllegalStateException: maxImages (2) has already been acquired
• Fixed issue when setLensFacing was not called for a use case, resulting in java.lang.IllegalArgumentException: Unable to get camera ID for use case.
• Fixed issue where LEGACY device required specific aspect ratio as maximum JPEG resolution
• Fixed issue when backgrounding the app while camera is opening
• Fixed issue on API < 25, removing error checkAndUpdateEglState: invalid current EGLDisplay
• Fixed issue when unbinding preview after enabling and starting extensions
• Build artifacts for camera-view and camera-extensions are now published as alpha versions

Camera-Camera2 and Camera-Core Version 1.0.0-alpha03

July 2, 2019

androidx.camera:camera-core:1.0.0-alpha03 and androidx.camera:camera-camera2:1.0.0-alpha03 are released. Version 1.0.0-alpha03 contains these commits.

API Changes

• Added javadoc clarification for “target” in setTarget configuration calls

Camera-Core

• Fixed unconfigured Input/Output Surface crash on rapid open/close or bind/unbind
• Move to new Futures implementations
• Test fixes for more robust testing
• Core integration test now shows capture time for photos
• Developed internal compat class for Executors
• Timing test app capture images waits for previous to complete & improved stability

Extensions

• Added versioning checks
• Additional test coverage - extension event callbacks
• Improvements for internally corresponding image and meta-data
• Fixes to mode switching in test app

Camera-Camera2 and Camera-Core Version 1.0.0-alpha02

June 5, 2019

androidx.camera:camera-core:1.0.0-alpha02 and androidx.camera:camera-camera2:1.0.0-alpha02 are released. Version 1.0.0-alpha02 contains these commits.

Bug fixes

• Fixed div by zero issue when using emulator
• Fixed NullPointerException/Surface Abandoned error occurring on some devices when quickly taking photos while unbinding and rebinding use cases rapidly.
• Fixed internal issue to ensure capture request updates affect all surfaces consistently
• Stability improvements when restarting use cases in new app instances
• Internal architecture changes to prepare for supporting executors in the API
• Additional Javadoc clarifications on CameraX class and lifecycle management
• Added instrumented testing for Antelope performance test app
• Remove need for '-keepattributes Signature' in app Proguard config

Camera-Camera2 and Camera-Core 1.0.0-alpha01

May 7, 2019

androidx.camera:camera-core:1.0.0-alpha01 and androidx.camera:camera-camera2:1.0.0-alpha01 are released. Version 1.0.0-alpha01 contains these commits.

Camera-Lifecycle Version 1.0.0-beta11

October 14, 2020

androidx.camera:camera-lifecycle:1.0.0-beta11 is released. Version 1.0.0-beta11 contains these commits.

Bug Fixes

• <UseCase>.getTargetRotation() will return Surface.ROTATION_0 if called before being attached to a Camera instance unless a targetRotation has been set on the Builder or UseCase. (I80fcd)

Camera-Lifecycle Version 1.0.0-beta10

September 23, 2020

androidx.camera:camera-lifecycle:1.0.0-beta10 is released. Version 1.0.0-beta10 contains these commits.

Bug Fixes

• Release to support Camera-Core 1.0.0-beta10

Camera-Lifecycle Version 1.0.0-beta09

September 16, 2020

androidx.camera:camera-lifecycle:1.0.0-beta09 is released. Version 1.0.0-beta09 contains these commits.

Camera-Lifecycle Version 1.0.0-beta08

August 19, 2020

androidx.camera:camera-lifecycle:1.0.0-beta08 is released. Version 1.0.0-beta08 contains these commits.

Bug Fixes

• Initialization should no longer crash when using a Context that does not return an Application object from Context.getApplicationContext(). (I3d3c9, b/160817073)

Camera-Lifecycle Version 1.0.0-beta07

July 22, 2020

androidx.camera:camera-lifecycle:1.0.0-beta07 is released. Version 1.0.0-beta07 contains these commits.

Camera-Lifecycle Version 1.0.0-beta06

June 24, 2020

androidx.camera:camera-lifecycle:1.0.0-beta06 is released. Version 1.0.0-beta06 contains these commits.

API Changes

• CameraX can now be configured with ProcessCameraProvider#configureInstance() before calling ProcessCameraProvider#getInstance(). This allows for customization of the CameraXConfig without requiring implementing CameraXConfig.Provider in the app's Application class. (Ia1a8d)

Camera-Lifecycle Version 1.0.0-beta05

June 10, 2020

androidx.camera:camera-lifecycle:1.0.0-beta05 is released. Version 1.0.0-beta05 contains these commits.

Bug Fixes

• Fix the crash on app startup when initialising CameraX while phone is in Do Not Disturb mode. An InitializationException contains a CameraUnavailableException will be set to the ListenableFuture of the intialization result instead of crashing the application. (I9909a, b/149413835)

Camera-Lifecycle Version 1.0.0-beta04

May 27, 2020

androidx.camera:camera-lifecycle:1.0.0-beta04 is released. Version 1.0.0-beta04 contains these commits.

Camera-Lifecycle Version 1.0.0-beta03

April 15, 2020

androidx.camera:camera-lifecycle:1.0.0-beta03 is released. Version 1.0.0-beta03 contains these commits.

Bug Fixes

• Fixed regression from beta03 where calling bindToLifecycle() with zero UseCases would cause a thrown exception. This prevented retrieval of a Camera without binding a UseCase.
• Fixes to support the release of camera-core

Camera-Lifecycle Version 1.0.0-beta01

February 26, 2020

androidx.camera:camera-lifecycle:1.0.0-beta01 is released. Version 1.0.0-beta01 contains these commits.

Bug Fixes

• Fixed documentation to note that when obtaining a ProcessCameraProvider during initialization, a default configuration is used and that extending Application is optional. (I5e395)

Camera-Lifecycle Version 1.0.0-beta02

April 1, 2020

androidx.camera:camera-lifecycle:1.0.0-beta02 is released. Version 1.0.0-beta02 contains these commits.

Bug Fixes

• Updated to support the bug fixes in the camera-camera2:1.0.0-beta02 and camera-core:1.0.0-beta02 artifacts.

Camera-Lifecycle Version 1.0.0-alpha10

February 10, 2020

androidx.camera:camera-lifecycle:1.0.0-alpha10 is released. Version 1.0.0-alpha10 contains these commits.

API Changes

• Added @MainThread annotation to BindToLifecycle, unbind and unbindAll methods. (I990d2)

Camera-Lifecycle Version 1.0.0-alpha03

January 22, 2020

androidx.camera:camera-lifecycle:1.0.0-alpha03 is released. Version 1.0.0-alpha03 contains these commits.

Updates

• Various fixes and updates to support Camera Core & Camera2 changes.

Camera-Lifecycle Version 1.0.0-alpha02

December 18, 2019

androidx.camera:camera-lifecycle:1.0.0-alpha02 is released. Version 1.0.0-alpha02 contains these commits.

Dependency changes

• Updated to use androidx.camera:camera-core:1.0.0-alpha08.

Camera-Lifecycle Version 1.0.0-alpha01

December 4, 2019

androidx.camera:camera-lifecycle:1.0.0-alpha01 is released. Version 1.0.0-alpha01 of camera-lifecycle contains these commits

API notes

• The camera-lifecycle artifact is added, providing LifeCycleCameraProvider interface, and an implementation called ProcessCameraProvider which provides many of the functions of the previous CameraX class in core and is obtained via a getInstance() method.
• Apps should include the camera-lifecycle library to use CameraX.
• See notes in the camera-core section for how to perform initialization of CameraX using a ProcessCameraProvider.

Camera-Extensions and Camera-View Version 1.0.0

Version 1.0.0-alpha32

December 15, 2021

androidx.camera:camera-extensions:1.0.0-alpha32 and androidx.camera:camera-view:1.0.0-alpha32 are released. Version 1.0.0-alpha32 contains these commits.

API Changes

• Removed unnecessary @RequiresApi(21) annotations from the inner classes/interfaces. (I8e286, b/204917951)
• Update api files for camera-extensions artifact. (If683a, b/161377155)

Bug Fixes

• Disallow the app to enable extension modes when binding VideoCapture. CameraX Extensions only support ImageCapture and Preview. The VideoCapture can't be supported yet. If the app binds VideoCapture and enables any extension mode, an IllegalArgumentException will be thrown. (I0d87b)
• CameraSelector#filter no longer throws an IllegalArgumentException when the result set is empty. (I27804)
• Renamed ExtensionsManager#getInstance API as getInstanceAsync because it returns ListenableFuture. The Async suffix of the function name can clearly present that it is an async function. (I279d2)
• Remove resolution parameter from the ExtensionsManager#getEstimatedCaptureLatencyRange API since users can't know which sizes are supported for the ImageCapture use case and can't distinguish whether the returned latency information is for the maximum capture output size or the input resolution parameter. (I74bb2)
• Move CameraProvider parameter of ExtensionsManager functions to the getInstance() API. So that the users don't need to input the CameraProvider parameter each time when calling the ExtensionsManager functions. (Ic7e48)

Version 1.0.0-alpha31

November 17, 2021

androidx.camera:camera-extensions:1.0.0-alpha31 and androidx.camera:camera-view:1.0.0-alpha31 are released. Version 1.0.0-alpha31 contains these commits.

API Changes

• Added CameraSelector#filter to the public API to filter a list of CameraInfos based on a CameraSelector. (I105d0)

Bug Fixes

• Fixed a crash when switching extensions mode quickly on certain devices. (Iebbef)

Version 1.0.0-alpha30

October 13, 2021

androidx.camera:camera-extensions:1.0.0-alpha30 and androidx.camera:camera-view:1.0.0-alpha30 are released. Version 1.0.0-alpha30 contains these commits.

API Changes

• Added @RequiresApi(21) annotation to all CameraX classes and dropped minSdkVersion from AndroidManifest.xml. This will allow camera-core to be easily integrated into applications that have a minSdkVersion less than 21, but want to conditionally use code paths that rely on API 21 and higher. For any application with minSdkVersion 21 or higher, this change requires no action. (Ie7f2e, b/200599470)

Bug Fixes

• Fixed the AbstractMethodError issue which happens when proguard is enabled. (Iae468, b/201177844)

Version 1.0.0-alpha29

September 29, 2021

androidx.camera:camera-extensions:1.0.0-alpha29 and androidx.camera:camera-view:1.0.0-alpha29 are released. Version 1.0.0-alpha29 contains these commits.

API Changes

• ExperimentalUseCaseGroup annotation is removed now that the APIs are no longer experimental. (I01ef5)
• remove RotationProvider#removeAllListeners(). Please use RotationProvider#removeListener(...) instead. (Id9d4a)
• Updated the RotationReceiver class: changed set/clear Listener to add/remove/removeAll, remove the setListener variation that uses the main thread by default and added annotation of methods. (Ib1669)

Bug Fixes

• Renamed ExtensionMode#BEAUTY to FACE_RETOUCH to correctly present what is done by the extension mode. (I61f54, b/198515274)
• Fixed the issue that camera is closed unexpectedly when multiple CameraController and PreviewView are used in one Activity. (Ibfd18, b/197539358)

Version 1.0.0-alpha28

August 18, 2021

androidx.camera:camera-extensions:1.0.0-alpha28 and androidx.camera:camera-view:1.0.0-alpha28 are released. Version 1.0.0-alpha28 contains these commits.

API Changes

• ExperimentalUseCaseGroupLifecycle annotation is removed now that the APIs are no longer experimental. (I17b85)
• refactored RotationListener and renamed it to RotationProvider. It continues to provide the same feature with slightly different API. (Idffc5)
• rename TAP_TO_FOCUS_UNSUCCESSFUL to TAP_TO_FOCUS_NOT_FOCUSED and TAP_TO_FOCUS_SUCCESSFUL to TAP_TO_FOCUS_FOCUSED. Made OutputSize final (I099fa)

Bug Fixes

• Removed deprecated <EffectName><UseCase>Extender classes, ExtensionsErrorListener and related ExtensionsManager APIs. (I3b8c3)

Version 1.0.0-alpha27

July 21, 2021

androidx.camera:camera-extensions:1.0.0-alpha27 and androidx.camera:camera-view:1.0.0-alpha27 are released. Version 1.0.0-alpha27 contains these commits.

API Changes

• Promoted the viewport API out of experimental. Remove the experimental annotation of the API. (I717ea)
• Renamed CoordinateTransform#getTransform to CoordinateTransform#transform and update JavaDoc (I864ae)

Bug Fixes

• Fixed PreviewView PERFORMANCE mode stretch issue when using it together with Compose UI. (Ie1137, b/183864890)

Version 1.0.0-alpha26

June 30, 2021

androidx.camera:camera-extensions:1.0.0-alpha26 and androidx.camera:camera-view:1.0.0-alpha26 are released. Version 1.0.0-alpha26 contains these commits.

API Changes

• add a new method CameraController#getTapToFocusState() that exposes the latest tap-to-focus result. (Iaccb0)
• adding more camera-core features to CameraController: getters/setters for target aspect ratio, target resolution, capture mode, CameraControl and custom executors. (Iea8f2)
• add a RotationReceiver class that receives Surface rotation changes. This can be used to set the target rotation when the device is in fixed portrait/landscape mode. (Ib278f)
• Exposed new getEstimatedCaptureLatencyRange public APIs in ExtensionsManager class. (I6a8ec)
• Deprecated ExtensionsErrorListener. Currently, this interface is only used to monitor whether a Preview or ImageCapture is lacking when enabling extension modes. CameraX will automatically add an extra Preview or ImageCapture to make the extension functions work well. After that, no error will be reported via this interface. (I47d9e)
• Exposed new ExtensionsManager getInstance, isExtensionAvailable and getExtensionEnabledCameraSelector public APIs and deprecated old <EffectName><UseCase>Extender classes and related APIs. (I329e6)

Version 1.0.0-alpha25

June 2, 2021

androidx.camera:camera-extensions:1.0.0-alpha25 and androidx.camera:camera-view:1.0.0-alpha25 are released. Version 1.0.0-alpha25 contains these commits.

API Changes

• ExperimentalCameraFilter APIs are now out of experimental stage and become formal APIs. They can be used without annotated OptIn. (I4bc94)
• Add a utility that transforms coordinates between use cases. Example usage: transforming the coordinates detected in ImageAnalysis use case and highlight the detected object in preview. (I63ab1, b/137515129)
• Removed CameraView. CameraView has been replaced by CameraController. Please see the migration guide for how to migrate.: (Id5005)

Bug Fixes

• Replaced ExperimentalUseCaseGroupLifecycle with ExperimentalUseCaseGroup. (I3b2ef, b/159033688)

Version 1.0.0-alpha24

April 21, 2021

androidx.camera:camera-extensions:1.0.0-alpha24 and androidx.camera:camera-view:1.0.0-alpha24 are released. Version 1.0.0-alpha24 contains these commits.

Bug Fixes

• Replaced annotation @Experimental with @RequiresOptIn to experimental APIs. For calling experimental APIs, use androidx.annotation.OptIn instead of deprecated androidx.annotation.experimental.UseExperimental. (Iff226)
• Fixed the PreviewView stretched issue on Samsung J5 Prime (Ib10b6)

Camera Extensions & View Version 1.0.0-alpha23

March 24, 2021

androidx.camera:camera-extensions:1.0.0-alpha23 and androidx.camera:camera-view:1.0.0-alpha23 are released. Version 1.0.0-alpha23 contains these commits.

API Changes

• CameraView is being deprecated. Please use LifecycleCameraController instead. See the migration guide (Idac2c)
• Added FloatRange annotation to setLinearZoom() (I69971)

Bug Fixes

• Pinned camera-view dependencies to rely on 1.0.0 artifacts. Depending on camera-view will not longer cause gradle's dependency resolution to automatically upgrade camera-core, camera-camera2 and camera-lifecycle to the latest 1.1.0 artifacts, though camera-view is still compatible with those artifacts if they are explicitly set to use 1.1.0. (Ic8fa1, b/181599852)
• Fixed Samsung A3 stretched preview in PreviewView. (Iacb30, b/180121821)
• Fixed the issue where if camera selector cannot be set before camera is initialized. (Ic8bd0)

Camera Extensions & View Version 1.0.0-alpha22

February 24, 2021

androidx.camera:camera-extensions:1.0.0-alpha22 and androidx.camera:camera-view:1.0.0-alpha22 are released. Version 1.0.0-alpha22 contains these commits.

API Changes

• add a CameraInfo getter to CameraController. (Ib8138, b/178251727)

Bug Fixes

• Fixed ExtensionsErrorListener to report errors when only Preview or ImageCapture is bound. (I5ae39)

Camera Extensions & View Version 1.0.0-alpha21

January 27, 2021

androidx.camera:camera-extensions:1.0.0-alpha21 and androidx.camera:camera-view:1.0.0-alpha21 are released. Version 1.0.0-alpha21 contains these commits.

Releasing to support other camera library artifacts.

Camera Extensions & View Version 1.0.0-alpha20

December 16, 2020

androidx.camera:camera-extensions:1.0.0-alpha20 and androidx.camera:camera-view:1.0.0-alpha20 are released. Version 1.0.0-alpha20 contains these commits.

Releasing to support other camera library artifacts.

Camera-Extensions & Camera-View Version 1.0.0-alpha19

November 11, 2020

androidx.camera:camera-extensions:1.0.0-alpha19 and androidx.camera:camera-view:1.0.0-alpha19 are released. Version 1.0.0-alpha19 contains these commits.

Bug Fixes

• @ExperimentalVideo annotation was introduced to camera-view. This annotation marks APIs which expose experimental video functionality which is subject to change as the features are fully developed. Any method using these APIs should use the @UseExperimental annotation with ExperimentalVideo as the markerClass. (I6d729)

Camera-Extensions Version 1.0.0-alpha18

October 14, 2020

androidx.camera:camera-extensions:1.0.0-alpha18 is released. Version 1.0.0-alpha18 contains these commits.

Bug Fixes

• Improved the latency of CameraX initialization and bindToLifecycle (I61dc5)
• <UseCase>.getTargetRotation() will return Surface.ROTATION_0 if called before being attached to a Camera instance unless a targetRotation has been set on the Builder or UseCase. (I80fcd)

Camera-View Version 1.0.0-alpha18

October 14, 2020

androidx.camera:camera-view:1.0.0-alpha18 is released. Version 1.0.0-alpha18 contains these commits.

Releasing to support other camera library artifacts.

Camera-Extensions Version 1.0.0-alpha17

September 23, 2020

androidx.camera:camera-extensions:1.0.0-alpha17 is released. Version 1.0.0-alpha17 contains these commits.

Bug Fixes

• Release to support Camera-Core 1.0.0-beta10

Camera-View Version 1.0.0-alpha17

September 23, 2020

androidx.camera:camera-view:1.0.0-alpha17 is released. Version 1.0.0-alpha17 contains these commits.

Bug Fixes

• Release to support Camera-Core 1.0.0-beta10

Camera-Extensions Version 1.0.0-alpha16

September 16, 2020

androidx.camera:camera-extensions:1.0.0-alpha16 is released. Version 1.0.0-alpha16 contains these commits.

Bug Fixes

• Added method in ExtensionsManager to get an Extensions object which is used to enable and query extensions on Camera instances (I4fb7e)

Camera-View Version 1.0.0-alpha16

September 16, 2020

androidx.camera:camera-view:1.0.0-alpha16 is released. Version 1.0.0-alpha16 contains these commits.

API Changes

• Removed PreviewView#setDeviceRotationForRemoteDisplayMode() and PreviewView#getDeviceRotationForRemoteDisplayMode(). The two methods are for customizing preview rotation, when desired rotation is not display rotation, e.g. remote display. To handle the non-display preview rotation now, set the desired rotation with Preview#setTargetRotation() and the newly added PreviewView#getViewPort(targetRotation). (Ib62cc)
• Renamed createSurfaceProvider() to getSurfaceProvider(). The method will always return the same instance of Preview.SurfaceProvider. (Iff83c)

Bug Fixes

• Forced PreviewView to use TextureView if extension effect is enabled and the vendor library implementation needs to do a special process on the output surface. (I0c3cc)
• Allow arbitrary target rotation for Preview. The transformation info is calculated and returned to user on-the-fly via a new TranformationInfoListener callback. (I21470)

Known Issues

• In PreviewView, OnClickListener#onClick() is not invoked when the end user clicks PreviewView. The touch event is mistakenly consumed by PreviewView#onTouchEvent(). The issue will be fixed in the next release.
• The MeteringPoint obtained from PreviewView#getMeteringPointFactory() may be wrong if ViewPort is used with PreviewView.

Camera-Extensions Version 1.0.0-alpha15

August 19, 2020

androidx.camera:camera-extensions:1.0.0-alpha15 is released. Version 1.0.0-alpha15 contains these commits.

Bug Fixes

• The ExtensionsManager.init() method now takes in a Context as a parameter instead of having 0 args. (Ife754)

• Initialization should no longer crash when using a Context that does not return an Application object from Context.getApplicationContext(). (I3d3c9, b/160817073)

  Camera-View Version 1.0.0-alpha15

  August 19, 2020

androidx.camera:camera-view:1.0.0-alpha15 is released. Version 1.0.0-alpha15 contains these commits.

Bug Fixes

• DisplayOrientedMeteringPointFactory takes in a CameraInfo instance instead of a CameraSelector so there is a direct mapping to which Camera the factory will be generating points for. All classes which use DisplayOrientedMeteringPointFactory also take in a CameraInfo instance instead of CameraSelector. (I400c1)
• Removed TextureViewMeteringPointFactory. PreviewView provides a public API (createMeteringPointFactory()) to create a metering point factory regardless of whether it's using a TextureView or SurfaceView. (Ide693)
• rename PreviewView's SURFACE_VIEW/TEXTURE_VIEW implementation modes to PERFORMANCE/COMPATIBLE. PERFORMANCE is the old SURFACE_VIEW mode, and COMPATIBLE is the old TEXTURE_VIEW mode. (I0edc2)
• For image capture, overwrite the flip horizontal flag in metadata based on camera direction. (I28499)

Camera-Extensions Version 1.0.0-alpha14

July 22, 2020

androidx.camera:camera-extensions:1.0.0-alpha14 is released. Version 1.0.0-alpha14 contains these commits.

Camera-View Version 1.0.0-alpha14

July 22, 2020

androidx.camera:camera-view:1.0.0-alpha14 is released. Version 1.0.0-alpha14 contains these commits.

Camera-Extensions Version 1.0.0-alpha13

June 24, 2020

androidx.camera:camera-extensions:1.0.0-alpha13 is released. Version 1.0.0-alpha13 contains these commits.

Bug Fixes

• Added experimental interfaces for filtering cameras by camera ID and CameraCharacteristics. (I28f61)

Camera-View Version 1.0.0-alpha13

June 24, 2020

androidx.camera:camera-view:1.0.0-alpha13 is released. Version 1.0.0-alpha13 contains these commits.

Bug Fixes

• CameraView no longer crashes with an IllegalArgumentException when binding to a LifecycleOwner whose Lifecycle transitions to a DESTROYED state shortly after being bound. Binding Lifecycles in a DESTROYED state will not attempt to open the camera. (I7c2b8)
• PreviewView StreamState is now available through CameraView.getPreviewStreamState() (I21a2b)

Camera-Extensions Version 1.0.0-alpha12

June 10, 2020

androidx.camera:camera-extensions:1.0.0-alpha12 is released. Version 1.0.0-alpha12 contains these commits.

Bug Fixes

• Fix the crash on app startup when initialising CameraX while phone is in Do Not Disturb mode. An InitializationException contains a CameraUnavailableException will be set to the ListenableFuture of the intialization result instead of crashing the application. (I9909a, b/149413835)

Camera-View Version 1.0.0-alpha12

June 10, 2020

androidx.camera:camera-view:1.0.0-alpha12 is released. Version 1.0.0-alpha12 contains these commits.

Bug Fixes

• Add PreviewView#getBitmap() API which returns a Bitmap representation of the content displayed on the preview surface. (I9b500, b/157659818)

Camera-Extensions Version 1.0.0-alpha11

May 27, 2020

androidx.camera:camera-extensions:1.0.0-alpha11 is released. Version 1.0.0-alpha11 contains these commits.

Camera-View Version 1.0.0-alpha12

June 10, 2020

androidx.camera:camera-view:1.0.0-alpha12 is released. Version 1.0.0-alpha12 contains these commits.

New Features

API Changes

Bug Fixes

• Add PreviewView#getBitmap() API which returns a Bitmap representation of the content displayed on the preview surface. (I9b500, b/157659818)

Camera-View Version 1.0.0-alpha11

May 27, 2020

androidx.camera:camera-view:1.0.0-alpha11 is released. Version 1.0.0-alpha11 contains these commits.

API Changes

• Add PreviewView#getPreviewStreamState API which allows apps to observe if preview is streaming or not. When the PreviewView is in TEXTURE_VIEW mode, the STREAMING state also guarantees the preview image is visible. (Ic0906, b/154652477)
• Added PreviewView#setDeviceRotationForRemoteDisplayMode() API to provide device rotation for transform calculations if the application is running in remote display mode. (I59b95, b/153514525)

Bug Fixes

• Fixed the preview distortion issue on FULL/LIMITED/LEVEL_3 cameras running android 7.0 and below. Forced use ImplementationMode#TEXTURE_VIEW mode when the android version is 7.0 or below. (I83e30, b/155085307)
• Removed the CameraInfo parameter from PreviewView#createSurfaceProvider(), PreviewView now internally retrieves it from the SurfaceRequest. (If18f0, b/154652477)
• Fixed the VideoCapture's default aspect ratio to be 16:9 in CameraView. (Ie6a7b, b/153237864)
• Fix PreviewView black screen issues when swiped out Preview fragment and then swiped back in ViewPager2. Also fixed the issue when removeView(previewview) and then addView(previewView). (Iab555, b/149877652, b/147354615)
• Update the CameraView#takePicture() API to allow saving images to Uri and OutputStream. Update the test app to use Uri as the canonical example. (Ia2459, b/153607583)
• You can set PreviewView's scale type from a XML layout by setting the ScaleType attribute. (I08565, b/153015659)
• CameraView.ScaleType has been removed. Instead, use PreviewView.ScaleType to set/get a scale type with CameraView. (Ia8974, b/153014831)
• Give PreviewView a background color by default if it doesn’t already have one. This prevents content behind it from being visible before the preview stream starts. (I09fad)

Camera-Extensions Version 1.0.0-alpha10

April 15, 2020

androidx.camera:camera-extensions:1.0.0-alpha10 is released. Version 1.0.0-alpha10 contains these commits.

Bug Fixes

• Fixes to support the release of Camera-Core

Camera-View Version 1.0.0-alpha10

April 15, 2020

androidx.camera:camera-view:1.0.0-alpha010 is released. Version 1.0.0-alpha010 contains these commits.

Bug Fixes

• Fixes a previous known issue where PreviewView's surfaceView implementation wasn't working well on certain devices, and would cause the app to crash after resuming preview. (I5ed6b)

Camera-Extensions Version 1.0.0-alpha09

April 1, 2020

androidx.camera:camera-extensions:1.0.0-alpha09 is released. Version 1.0.0-alpha09 contains these commits.

Bug Fixes

• Updated to support the bug fixes in the camera-camera2:1.0.0-beta02, camera-core:1.0.0-beta02, and camera-lifecycle:1.0.0-beta02 artifacts

Camera-View Version 1.0.0-alpha09

April 1, 2020 androidx.camera:camera-view:1.0.0-alpha09 is released. Version 1.0.0-alpha09 contains these commits.

Known Issues

• Using ImplementationMode.SURFACE_VIEW with PreviewView may not work well on certain devices, this is because the SurfaceView used for preview invalidates its surface when the lifecycle of the window it's in is stopped, when it restarts, the camera is reopened and may attempt to resume preview before the SurfaceView's surface is valid again. For now, you should use ImplementationMode.TEXTURE_VIEW.

API Changes

• Renamed PreviewView.setImplementationMode() to PreviewView.setPreferredImplementationMode().
• Renamed PreviewView.getImplementationMode() to PreviewView.getPreferredImplementationMode().
• Replaced PreviewView.getSurfaceProvider() by PreviewView.createSurfaceProvider(CameraInfo), which takes a nullable CameraInfo instance used to optimize preview by using ImplementationMode.SURFACE_VIEW whenever possible. If a null instance is passed, or if you set the preferred implementation mode to ImplementationMode.TEXTURE_VIEW, ImplementationMode.TEXTURE_VIEW is used internally.

• The following code sample shows how a preview use case used to previously be used with PreviewView.

  preview.setSurfaceProvider(previewView.previewSurfaceProvider)
  cameraProvider.bindToLifecycle(lifecycleOwner, cameraSelector, preview)
  

  Right now, you can write the following:

  val camera = cameraProvider.bindToLifecycle(lifecycleOwner, cameraSelector, preview)
  previewView.preferredImplementationMode = ImplementationMode.TEXTURE_VIEW
  preview.setSurfaceProvider(previewView.createSurfaceProvider(camera.cameraInfo))
  

• The @UiThread annotation has been added to PreviewView.getSurfaceProvider(), meaning it must be called from the main thread. (I192f3)

• Added PreviewView.setScaleType() which allows to set the scale type of the preview. It accepts one of the values in PreviewView.ScaleType, and defaults to PreviewView.ScaleType.FILL_CENTER.

• Added PreviewView.getScaleType().

• Removed support for setting the implementation mode for PreviewView in a XML layout using the implementationMode attribute.

• Add createMeteringPointFactory() API to PreviewView to support converting (x, y) in PreviewView to MeteringPoint. (Ib36d7)

Bug Fixes

• Fixed cases where an incorrect preview is displayed after PreviewView's size changes. (I71101)

Camera-Extensions Version 1.0.0-alpha08

February 26, 2020

androidx.camera:camera-extensions:1.0.0-alpha08 is released. Version 1.0.0-alpha08 contains these commits.

Camera-View Version 1.0.0-alpha08

February 26, 2020

androidx.camera:camera-view:1.0.0-alpha08 is released. Version 1.0.0-alpha08 contains these commits.

Bug Fixes

• Replaced the ListenableFuture on SurfaceRequest.provideSurface() with an Executor and Callback. This simplifies the API by no longer requiring handling of exceptions on provideSurface() and enforces that the provideSurface() callback cannot be cancelled. This is to prevent crashes on older devices caused by prematurely releasing surfaces. The SurfaceRequest.Result object is now used for tracking how a SurfaceRequest uses the provided Surface. (I7854b)
• Renamed SurfaceRequest.setSurface(Surface) to SurfaceRequest.provideSurface(Surface) and SurfaceRequest.setWillNotComplete() to SurfaceRequest.willNotProvideSurface(). (I224fe)
• Fixed initialization of app variants with ProGuard enabled by preserving the flag that sets the default CameraXConfig provider. (I2d6c1)

Camera-Extensions Version 1.0.0-alpha07

February 10, 2020

androidx.camera:camera-extensions:1.0.0-alpha07 is released. Version 1.0.0-alpha07 contains these commits.

Bug Fixes

• The arguments that were previously passed in ImageCapture.OnImageSavedCallback.onError() and ImageCapture.OnImageCapturedCallback.onError() have now been replaced by a single argument ImageCaptureException, which still contains all the information that was previously passed.
• The file argument previously passed in ImageCapture.OnImageSavedCallback.onImageSaved() has been removed. (I750d2)

Camera-View Version 1.0.0-alpha07

February 10, 2020

androidx.camera:camera-view:1.0.0-alpha07 is released. Version 1.0.0-alpha07 contains these commits.

API Changes

• PreviewView's TextureView implementation now sets the TextureView's size to the camera sensor output size before scaling it to fill its parent PreviewView. If you want the camera preview to fill an entire part of the UI (the whole screen for instance), you should not set the PreviewView's size to a fixed value, or have it wrap its content (by using the attribute "wrap_content" for example), this may result in the camera preview only filling part of the PreviewView (if the camera sensor output size is smaller). Instead, you should set the PreviewView as big as its parent (by using the attribute "match_parent" for example). (1204869)

Bug Fixes

• Updated ImageCapture to allow saving images to Uri and OutputStream. Combined overloaded takePicture methods into one. Updated test app to use Uri as the canonical example. (Ia3bec)
• Preview.PreviewSurfaceProvider has been renamed to Preview.SurfaceProvider. SurfaceProviders no longer require developers to create their own ListenableFuture, and providing a Surface is now done through a new SurfaceRequest object. The Preview.getPreviewSurfaceProvider() method has been removed due to its potential for misuse when Preview is paired with other classes such as PreviewView. (I20105)
• The arguments that were previously passed in ImageCapture.OnImageSavedCallback.onError() and ImageCapture.OnImageCapturedCallback.onError() have now been replaced by a single argument ImageCaptureException, which still contains all the information that was previously passed.
• The file argument previously passed in ImageCapture.OnImageSavedCallback.onImageSaved() has been removed. (I750d2)
• API updated, with getZoomRatio(), getMaxZoomRatio(), getMinZoomRatio(), and getLinearZoom() methods of CameraInfo merging into getZoomState() which returns a ZoomState instance. (Ib19fe)

Camera-Extensions Version 1.0.0-alpha06

January 22, 2020

androidx.camera:camera-extensions:1.0.0-alpha06 is released. Version 1.0.0-alpha06 contains these commits.

Updates

• Various fixes and updates to support Camera Core & Camera2 changes.

Camera-View Version 1.0.0-alpha06

January 22, 2020

androidx.camera:camera-view:1.0.0-alpha06 is released. Version 1.0.0-alpha06 contains these commits.

Updates

• Various fixes and updates to support Camera Core & Camera2 changes.

Camera-Extensions Version 1.0.0-alpha05

December 18, 2019

androidx.camera:camera-extensions:1.0.0-alpha05 is released. Version 1.0.0-alpha05 contains these commits.

Bug Fixes

• Updated to match the internal Camera Core APIs.

Camera-View Version 1.0.0-alpha05

December 18, 2019

androidx.camera:camera-view:1.0.0-alpha05 is released. Version 1.0.0-alpha05 contains these commits.

Known Issues

• The aspect ratio may be incorrect when using PreviewView (b/146215202).

New Features

• Implemented a new class called PreviewView.TextureViewImplementation that syncs the SurfaceTexture's lifecycle with the camera's usage of the TextureView's surface.

Camera-Extensions Version 1.0.0-alpha04

December 4, 2019

androidx.camera:camera-extensions:1.0.0-alpha04 is released. Version 1.0.0-alpha04 of camera-extensions contains these commits

API changes

• Checking for the availability and enabling of an extension now takes in a CameraSelector as an input parameter. This needs to be the same CameraSelector that is used for binding the use case.

  val cameraSelector = CameraSelector.DEFAULT_BACK_CAMERA
  val builder = ImageCapture.Builder()
  val bokehImageCaptureExtender = BokehImageCaptureExtender.create(builder)
  if (bokehImageCaptureExtender.isExtensionAvailable(cameraSelector)) {
      bokehImageCaptureExtender.enableExtension(cameraSelector)
  }
  val imageCapture = builder.build()
  mCameraProvider?.bindToLifecycle(this, cameraSelector, imageCapture)
  

• You must initialize extensions before using the extension library.

  val availability = ExtensionsManager.init()
  Futures.addCallback<ExtensionsManager.ExtensionsAvailability>(
     availability,
     object : FutureCallback<ExtensionsManager.ExtensionsAvailability> {
         override fun onSuccess(availability: ExtensionsManager.ExtensionsAvailability?) {
             // Ready to make extensions calls
         }
         override fun onFailure(throwable: Throwable) {
             // Extensions could not be initialized
         }
     },
     Executors.newSingleThreadExecutor()
  )
  

Camera-View Version 1.0.0-alpha04

December 4, 2019

androidx.camera:camera-view:1.0.0-alpha04 is released. Version 1.0.0-alpha04 of camera-view contains these commits

API changes

• A PreviewView class is provided for easily displaying the output from the Preview use case in an application.

• PreviewView can be included in the layout:

  <androidx.camera.view.PreviewView
    android:id="@+id/preview_view"
    … />
  

• PreviewView provides a PreviewSurfaceProvider to easily connect a Preview use case

  preview.setPreviewSurfaceProvider(previewView.previewSurfaceProvider)
  

• “ZoomLevel” is now “ZoomRatio” in API-naming

• Some method parameters have changed nullability

Camera-Extensions and Camera-View Version 1.0.0-alpha03

October 9, 2019

androidx.camera:camera-extensions:1.0.0-alpha03 and androidx.camera:camera-view:1.0.0-alpha03 are released. These are the commits included in camera-extensions:1.0.0-alpha03 and these are the commits included in camera-view:1.0.0-alpha03.

New Features

• Added Context initializer for extensions. Extensions version incremented to 1.1.0

Camera-Extensions and Camera-View Version 1.0.0-alpha02

September 5, 2019

androidx.camera:camera-extensions:1.0.0-alpha02 and androidx.camera:camera-view:1.0.0-alpha02 are released. These are the commits included in camera-extensions:1.0.0-alpha02 and these are the commits included camera-view:1.0.0-alpha02.

• Added tests to verify PreviewImageProcessorImpl has correctly implemented timestamps.
• Fix ExtensionTest test failure on Nexus 5 (API level 21) and ensure preview is available.

Camera-Extensions and Camera-View Version 1.0.0-alpha01

August 7, 2019

androidx.camera:camera-extensions:1.0.0-alpha01 and androidx.camera:camera-view:1.0.0-alpha01 are released. These are the commits included in camera-extensions:1.0.0-alpha01 and these are the commits included camera-view:1.0.0-alpha01

• New library for future Camera Extensions for accessing effects on supported devices. This library is a work in progress.
• New Camera View class. This library is a work in progress.