Kotlin extensions, BindingAdapters, Composable functions for Android CameraX

Related tags

Kotlin Projects CameraXX
Overview

Setup

dependencies {
    implementation "com.github.skgmn:cameraxx:0.6.0"
}

Features

CameraXX provides extensions methods for CameraX to use functions with coroutines and flows.

suspend fun Context.getProcessCameraProvider(): ProcessCameraProvider
fun PreviewView.listenPreviewStreamState(): Flow<PreviewView.StreamState>
suspend fun ImageCapture.takePicture(): ImageProxy
suspend fun ImageCapture.takePicture(ImageCapture.OutputFileOptions): ImageCapture.OutputFileResults
fun ImageAnalysis.analyze(): Flow<ImageProxy>
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Comments
  • Failed to call observer method

    Failed to call observer method

    Hello,

    I encountered the following bug. When I use your project in my composable it launches fine for the first time, but when I navigate somewhere (at least 2 views deep) and then come back to view using CameraPreview my app crashes with this:

    E/AndroidRuntime: FATAL EXCEPTION: main
    Process: pl.noolstudio.<redactedAppName>, PID: 21901
    java.lang.RuntimeException: Failed to call observer method
        at androidx.lifecycle.ClassesInfoCache$MethodReference.invokeCallback(ClassesInfoCache.java:226)
        at androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeMethodsForEvent(ClassesInfoCache.java:194)
        at androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeCallbacks(ClassesInfoCache.java:185)
        at androidx.lifecycle.ReflectiveGenericLifecycleObserver.onStateChanged(ReflectiveGenericLifecycleObserver.java:37)
        at androidx.lifecycle.LifecycleRegistry$ObserverWithState.dispatchEvent(LifecycleRegistry.java:354)
        at androidx.lifecycle.LifecycleRegistry.backwardPass(LifecycleRegistry.java:284)
        at androidx.lifecycle.LifecycleRegistry.sync(LifecycleRegistry.java:302)
        at androidx.lifecycle.LifecycleRegistry.moveToState(LifecycleRegistry.java:148)
        at androidx.lifecycle.LifecycleRegistry.setCurrentState(LifecycleRegistry.java:121)
        at androidx.navigation.NavBackStackEntry.updateState(NavBackStackEntry.kt:169)
        at androidx.navigation.NavBackStackEntry.setMaxLifecycle(NavBackStackEntry.kt:150)
        at androidx.navigation.NavController$NavControllerNavigatorState.markTransitionComplete(NavController.kt:312)
        at androidx.navigation.compose.ComposeNavigator.onTransitionComplete$navigation_compose_release(ComposeNavigator.kt:71)
        at androidx.navigation.compose.NavHostKt$NavHost$3$2$1$invoke$$inlined$onDispose$1.dispose(Effects.kt:486)
        at androidx.compose.runtime.DisposableEffectImpl.onForgotten(Effects.kt:85)
        at androidx.compose.runtime.CompositionImpl$RememberEventDispatcher.dispatchRememberObservers(Composition.kt:772)
        at androidx.compose.runtime.CompositionImpl.applyChanges(Composition.kt:639)
        at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$2.invoke(Recomposer.kt:479)
        at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$2.invoke(Recomposer.kt:416)
        at androidx.compose.ui.platform.AndroidUiFrameClock$withFrameNanos$2$callback$1.doFrame(AndroidUiFrameClock.android.kt:34)
        at androidx.compose.ui.platform.AndroidUiDispatcher.performFrameDispatch(AndroidUiDispatcher.android.kt:109)
        at androidx.compose.ui.platform.AndroidUiDispatcher.access$performFrameDispatch(AndroidUiDispatcher.android.kt:41)
        at androidx.compose.ui.platform.AndroidUiDispatcher$dispatchCallback$1.doFrame(AndroidUiDispatcher.android.kt:69)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:970)
        at android.view.Choreographer.doCallbacks(Choreographer.java:796)
        at android.view.Choreographer.doFrame(Choreographer.java:727)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:957)
        at android.os.Handler.handleCallback(Handler.java:938)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:223)
        at android.app.ActivityThread.main(ActivityThread.java:7656)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
     Caused by: java.lang.NullPointerException
        at androidx.core.util.Preconditions.checkNotNull(Preconditions.java:119)
        at androidx.camera.lifecycle.LifecycleCameraRepository.suspendUseCases(LifecycleCameraRepository.java:433)
        at androidx.camera.lifecycle.LifecycleCameraRepository.setInactive(LifecycleCameraRepository.java:387)
        at androidx.camera.lifecycle.LifecycleCameraRepository.unregisterLifecycle(LifecycleCameraRepository.java:214)
        at androidx.camera.lifecycle.LifecycleCameraRepository$LifecycleCameraRepositoryObserver.onDestroy(LifecycleCameraRepository.java:514)
        at java.lang.reflect.Method.invoke(Native Method)
        at androidx.lifecycle.ClassesInfoCache$MethodReference.invokeCallback(ClassesInfoCache.java:219)
        at androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeMethodsForEvent(ClassesInfoCache.java:194) 
        at androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeCallbacks(ClassesInfoCache.java:185) 
        at androidx.lifecycle.ReflectiveGenericLifecycleObserver.onStateChanged(ReflectiveGenericLifecycleObserver.java:37) 
        at androidx.lifecycle.LifecycleRegistry$ObserverWithState.dispatchEvent(LifecycleRegistry.java:354) 
        at androidx.lifecycle.LifecycleRegistry.backwardPass(LifecycleRegistry.java:284) 
        at androidx.lifecycle.LifecycleRegistry.sync(LifecycleRegistry.java:302) 
        at androidx.lifecycle.LifecycleRegistry.moveToState(LifecycleRegistry.java:148) 
        at androidx.lifecycle.LifecycleRegistry.setCurrentState(LifecycleRegistry.java:121) 
        at androidx.navigation.NavBackStackEntry.updateState(NavBackStackEntry.kt:169) 
        at androidx.navigation.NavBackStackEntry.setMaxLifecycle(NavBackStackEntry.kt:150) 
        at androidx.navigation.NavController$NavControllerNavigatorState.markTransitionComplete(NavController.kt:312) 
        at androidx.navigation.compose.ComposeNavigator.onTransitionComplete$navigation_compose_release(ComposeNavigator.kt:71) 
        at androidx.navigation.compose.NavHostKt$NavHost$3$2$1$invoke$$inlined$onDispose$1.dispose(Effects.kt:486) 
        at androidx.compose.runtime.DisposableEffectImpl.onForgotten(Effects.kt:85) 
        at androidx.compose.runtime.CompositionImpl$RememberEventDispatcher.dispatchRememberObservers(Composition.kt:772) 
        at androidx.compose.runtime.CompositionImpl.applyChanges(Composition.kt:639) 
        at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$2.invoke(Recomposer.kt:479) 
        at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$2.invoke(Recomposer.kt:416) 
        at androidx.compose.ui.platform.AndroidUiFrameClock$withFrameNanos$2$callback$1.doFrame(AndroidUiFrameClock.android.kt:34) 
        at androidx.compose.ui.platform.AndroidUiDispatcher.performFrameDispatch(AndroidUiDispatcher.android.kt:109) 
        at androidx.compose.ui.platform.AndroidUiDispatcher.access$performFrameDispatch(AndroidUiDispatcher.android.kt:41) 
        at androidx.compose.ui.platform.AndroidUiDispatcher$dispatchCallback$1.doFrame(AndroidUiDispatcher.android.kt:69) 
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:970) 
        at android.view.Choreographer.doCallbacks(Choreographer.java:796) 
        at android.view.Choreographer.doFrame(Choreographer.java:727) 
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:957) 
        at android.os.Handler.handleCallback(Handler.java:938) 
        at android.os.Handler.dispatchMessage(Handler.java:99) 
        at android.os.Looper.loop(Looper.java:223) 
        at android.app.ActivityThread.main(ActivityThread.java:7656) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947) 

    I will try to make minimal reproduction, but can't do it right now as I have no time.

    opened by maxtomczyk 6
  • syntax in readMe example

    syntax in readMe example

    In the usage example in the readMe, you use:

    val zoomState by remember { ZoomState(pinchZoomEnabled = true) }

    I think the intent is:

    val zoomState:ZoomState = remember{ ZoomState(true) }

    edit: Since a lot of these things, like preview in particular, are nullable and it's useful to change their value later, I'm thinking the original intent was probably:

    var zoomState by remember { mutableStateOf(ZoomState(pinchZoomEnabled = true)) }

    My only real purpose here is to say that there looks like a versioning issue where either an "=" got switched with a "by" or the mutableStateOf() got dropped.

    opened by randyheaton 0
Releases(v0.7.1)

  • v0.7.1(Oct 1, 2021)

  • v0.7.0(Sep 29, 2021)

    cameraxx

    • Added ImageAnalysis.analyze<T>(suspend (ImageProxy) -> T): Flow<T> to manage the lifecycle of ImageProxy better.
    • Added some utility functions: ImageProxy.toByteArray(), ImageProxy.toBitmap()
    • Changed some return types
      • Changed the return type of CameraInfo.getTorchState() from Flow<Int> to StateFlow<Int?>
      • Changed the return type of CameraInfo.getZoomState() from Flow<ZoomState> to StateFlow<ZoomState?>
      • Changed the return type of PreviewView.listenPreviewStreamState() from Flow<PreviewView.StreamState> to StateFlow<PreviewView.StreamState?>
    • Fixed ConcurrentModificationException for ImageAnalysis.analyze() (but now it's deprecated)
    Source code(tar.gz)
    Source code(zip)

  • v0.6.1(Sep 15, 2021)

  • v0.6.0(Sep 15, 2021)

    cameraxx

    • Published to Maven Central
    • Behavior changes of ImageAnalysis.analyze()
      • Previously it used shareIn inside the method to provide a convenient way to be collected from many collectors, but it's now caller's responsibility. I misunderstood the behavior of shareIn.
      • Now it automatically closes undelivered ImageProxy instances.
    • Add some kdocs
    • Now provides sources artifact

    cameraxx-bindingadapter

    • Published to Maven Central
    • Add some kdocs
    • Now provides sources artifact
    Source code(tar.gz)
    Source code(zip)

  • v0.5.0(Sep 2, 2021)

    cameraxx

    • Added PreviewView.listenPreviewStreamState()
    • Changed to use org.jetbrains.kotlinx:kotlinx-coroutines-guava instead of implementing myself

    cameraxx-composable

    • Added focus metering feature
    • Added PreviewStreamState
    • Migrated from Flow to State for all state classes
    • Optimizations to reduce recompositions
    • Moved the pinchZoomEnabled parameter into ZoomState

    cameraxx-bindingadapter

    • Removed app:zoomRatio, app:torchOn binding adapter attributes
    • Now Camera can be retrieved through app:onCameraRetrieved
    Source code(tar.gz)
    Source code(zip)

  • v0.4.0(Aug 29, 2021)

    cameraxx

    • changed Context.getProcessCameraProvider() not to cancel ListenableFuture even though coroutine is cancelled

    cameraxx-compose

    • add parameter scaleType
    • add parameter implementationMode
    • support pinch zoom
    • add ZoomState for zoom
    • add TorchState for torch

    cameraxx-bindingadapter

    • add app:zoomRatio as two-way binding attribute
    • add app:torchOn as two-way binding attribute
    • add app:onCameraInfoRetrieved to get camera info
    Source code(tar.gz)
    Source code(zip)

  • v0.3.0(Aug 23, 2021)

  • v0.1.0(Aug 7, 2021)

Owner
null
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