- Fix: fix preview issues on Pixel 4A with certain FPS, thanks to [@honzasmuk][honzasmuk] ([#1089][1089])
- Improvement: don't catch gestures if they're turned off, thanks to [@ObsidianX][ObsidianX] ([#1068][1068])
- New: new flag cameraDrawHardwareOverlays and setDrawHardwareOverlays() to draw overlays on hardware canvas, thanks to [@ObsidianX][ObsidianX] ([#1066][1066])
-<small>[Video]</small> New: `setAudioCodec` and `app:cameraAudioCodec` to choose the audio encoding format, thanks to [@EverydayPineapple][EverydayPineapple] ([#861][861])
-<small>[Camera1, Frame processing]</small> Fix: frame processing restarts automatically after taking a picture, thanks to [@jeffreyfjohnson][jeffreyfjohnson] ([#877][877])
-<small>[Camera1]</small> Improvement: catch more errors in Camera1 lifecycle to avoid crashes, thanks to [@Namazed][Namazed] ([#851][851] and [#897][897])
-<small>[CameraView]</small> Improvement: `setLifecycleOwner` is now nullable and will unbind the lifecycle, thanks to [@Namazed][Namazed] ([#798][798])
-<small>[Preview]</small> Improvement: the `CameraPreview` APIs are much more friendly for subclassing ([#816][816])
-<small>[Frame processing]</small> New: `frame.getRotationToUser()` and `frame.getRotationToView()` APIs to help with processing vs. rendering ([#745][745])
-<small>[Camera1, Camera2]</small> New: `cameraPreviewFrameRateExact="true|false"` to tell whether the desired preview frame rate should be as exact as possible, thanks to [@hualong-shen][hualong-shenn] ([#754][754])
-<small>[Logging]</small> Improvement: `CameraLogger` is now thread safe, thanks to [@Namazed][Namazed] ([#779][779])
-<small>[Permissions]</small> Improvement: added runtime API `setRequestPermissions()` that matches the XML attribute, thanks to [@Namazed][Namazed] ([#775][775])
-<small>[Metering]</small> New: `startAutoFocus(RectF)` will start 3A metering to a given rect instead of a spot ([#724][724])
-<small>[Permissions]</small> New: `app:cameraRequestPermissions` flag to disable the automatic activity permission request ([#718][718])
-<small>[Frame processing]</small> New: `setFrameProcessingPoolSize()` to set the number of Frame instances that can exist at any given time. Useful in conjunction with `setFrameProcessingExecutors()`. Please read docs ([#716][716])
-<small>[Frame processing]</small> New: `setFrameProcessingExecutors()` to set the number of threads involved in frame processing. Useful in conjunction with `setFrameProcessingPoolSize()`. Please read docs ([#716][716])
-<small>[Frame processing, Camera2]</small> Improvement: ensure that slow processing does now slow down the preview ([#716][716])
-<small>[Camera2]</small> New: support for RAW pictures with new APIs `setPictureFormat()` and `CameraOptions.getSupportedPictureFormats()`. Contains a **breaking change**: `PictureResult.getFormat()` is not an integer anymore but rather a `PictureFormat`. This API had no real purpose so this might not affect you ([#691][691])
-<small>[Camera2]</small> New: support for constraining the frame processing size through `setFrameProcessingMaxWidth()` and `setFrameProcessingMaxHeight()`. This can improve processing performance ([#691][691])
-<small>[Camera2]</small> New: support for choosing the frame processing format through `setFrameProcessingFormat()` and `CameraOptions.getSupportedFrameProcessingFormats()` ([#691][691])
-<small>[Camera2]</small> Improvement: Frame processing FPS for Camera2 is now smooth and typically better than Camera1. This required some **breaking changes** (see below) ([#691][691])
-<small>[Camera2, Metering]</small> New: `startAutoFocus` is much more powerful and does 3A metering (AF, AE, AWB) ([#574][574])
-<small>[Camera2, Metering]</small> New: `setPictureMetering(boolean)` decides whether to do metering before `takePicture()`. Defaults to true to improve quality. ([#580][580])
-<small>[Camera2, Metering]</small> New: `setPictureSnapshotMetering(boolean)` decides whether to do metering before `takePictureSnapshot()`. Defaults to false to improve latency. However, you can set this to true to greatly improve the snapshot quality, for example to support `Flash`. ([#580][580])
-<small>[Camera2, Metering]</small> New: metering extended to many more cameras, which can now use `startAutoFocus` or the focus gesture ([#574][574])
-<small>[Camera2, Metering]</small> Improvement: `onAutoFocusEnd` is now guaranteed to be called ([#574][574])
-<small>[Camera2, Metering]</small> Improvement: taking picture does not invalidate the previous focus ([#574][574])
-<small>[Camera2, Metering]</small> Improvement: better metering when zoomed in ([#574][574])
-<small>[Real time filters]</small>**Breaking change**: `Filter` interface signatures now accept timestamps for animations ([#588][588])
-<small>[Overlays]</small> New: you can now use `addView()` and `removeView()` to add or remove overlays at runtime (see docs) ([#588][588])
- New: support for watermarks and animated overlays ([docs](../docs/watermarks-and-overlays)), thanks to [@RAN3000][RAN3000] ([#502][502], [#421][421])
- Improvement: most internals are now open to be accessed by subclassing. Feel free to open PRs with more protected methods to be overriden. ([#494][494])
- **Breaking change**: some public classes have been moved to different packages. See [table here](../extra/v1-migration-guide#repackaging). ([#482][482])
- **Breaking change**: the listener methods `onFocusStart` and `onFocusEnd` are now called `onAutoFocusStart` and `onAutoFocusEnd`. ([#484][484])
- **Breaking change**: the gesture actions `focus` and `focusWithMarker` have been removed and replaced by `autoFocus`, which shows no marker. ([#484][484])
- New: new API called `setAutoFocusMarker()` lets you choose your own marker. ([#484][484])
If you were using `focus`, just switch to `autoFocus`.
- Fixed `FrameProcessor` freeze and release behavior, was broken ([#431][431])
- New: new api `setAutoFocusResetDelay` to control the delay to reset the focus after autofocus was performed, thanks to [@cneuwirt][cneuwirt] ([#435][435])
- Faster camera preview on layout changes ([#403][403])
- Renames setPreviewSize to setPreviewStreamSize (previewSize suggests it is related to the view size but it's not) ([#393][393])
- Added new APIs `setSnapshotMaxWidth` and `setSnapshotMaxHeight` ([#393][393]). You can now have a good looking preview but still take low-res snapshots using these snapshot constraints. Before this, the two sizes were coupled.
- Fixed: crash when using TextureView in API 28, thanks to [@Keyrillanskiy][Keyrillanskiy] ([#297][297])
- Fixed: restore Frame Processor callbacks after taking videos, thanks to [@stefanJi][stefanJi] ([#344][344])
- Enhancement: when horizontal, camera now uses the last available orientation, thanks to [@aartikov][aartikov] ([#290][290])
- Changed: we now swallow exceptions during autoFocus that were happening unpredictably on some devices, thanks to [@mahdi-ninja][mahdi-ninja] ([#332][332])
