Android CameraX: java.lang.IllegalStateException: maxImages (2) has already been acquired, call #close before acquiring more

[Prajwal Bhat]

When multiple images are being captured, getting an exception as:

D/MetadataImageReader: Failed to acquire next image.
    java.lang.IllegalStateException: maxImages (2) has already been acquired, call #close before acquiring more.
        at android.media.ImageReader.acquireNextImage(ImageReader.java:513)
        at androidx.camera.core.AndroidImageReaderProxy.acquireNextImage(AndroidImageReaderProxy.java:79)
        at androidx.camera.core.MetadataImageReader.imageIncoming(MetadataImageReader.java:318)
        at androidx.camera.core.MetadataImageReader$2.onImageAvailable(MetadataImageReader.java:67)
        at androidx.camera.core.AndroidImageReaderProxy$1$1.run(AndroidImageReaderProxy.java:145)
        at android.os.Handler.handleCallback(Handler.java:883)
        at android.os.Handler.dispatchMessage(Handler.java:100)
        at android.os.Looper.loop(Looper.java:237)
        at android.app.ActivityThread.main(ActivityThread.java:7814)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1075)

Here is the code: 

    private void takePicture()  {
    imageCapture.setFlashMode(flashMode);
    imageCapture.takePicture(cameraExecutor, new ImageCapture.OnImageCapturedCallback() {
        @SuppressLint("UnsafeExperimentalUsageError")
        @Override
        public void onCaptureSuccess(@NonNull ImageProxy image) {
            Bitmap imageBitmap = rotateImage(imageToBitmap(Objects.requireNonNull(image.getImage())), image.getImageInfo().getRotationDegrees());
            try {
                FileUtil.saveBitmap(MainActivity.this, imageBitmap);

            } catch (IOException e) {
                e.printStackTrace();
            }
            image.close();
            super.onCaptureSuccess(image);
        }
        @Override
        public void onError(@NonNull ImageCaptureException exception) {
            super.onError(exception);
        }
    });
}

 

CameraX version tested on: beta04 and beta05.

As seen in the code, I'm closing the image. Still, it did not solve the issue. Tested and got the same behavior on 3 different phones. 

The complete thread in StackOverflow: https://stackoverflow.com/questions/62237040/android-camerax-java-lang-illegalstateexception-maximages-2-has-already-been?noredirect=1#comment110236315_62237040

Complete code to replicate the issue: https://github.com/prajwal-bhat/CameraX

[LINGA venkatesh]

I have got similar error/crash:

2020-06-12 19:15:20.758 30250-30693/com.microsoft.office.lens.app E/AndroidRuntime: FATAL EXCEPTION: CameraX-camerax_high_priority
Process: com.microsoft.office.lens.app, PID: 30250
java.lang.IllegalStateException: maxImages (4) has already been acquired, call #close before acquiring more.
at android.media.ImageReader.acquireNextImage(ImageReader.java:402)
at android.media.ImageReader.acquireLatestImage(ImageReader.java:287)
at androidx.camera.core.AndroidImageReaderProxy.acquireLatestImage(AndroidImageReaderProxy.java:56)
at androidx.camera.core.SafeCloseImageReaderProxy.acquireLatestImage(SafeCloseImageReaderProxy.java:64)
at androidx.camera.core.ImageAnalysisNonBlockingAnalyzer.onImageAvailable(ImageAnalysisNonBlockingAnalyzer.java:66)
at androidx.camera.core.SafeCloseImageReaderProxy.lambda$setOnImageAvailableListener2SafeCloseImageReaderProxy(SafeCloseImageReaderProxy.java:168)
at androidx.camera.core.-$$LambdaSafeCloseImageReaderProxyxYazVewXZg9bKXr5ULxlN6BNF-8.onImageAvailable(lambda)
at androidx.camera.core.AndroidImageReaderProxy$11.run(AndroidImageReaderProxy.java:145)atjava.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)atjava.util.concurrent.ThreadPoolExecutorWorker.run(ThreadPoolExecutor.java:607)
at java.lang.Thread.run(Thread.java:761)

Regards,

Venkatesh.

[Leo Huang]

Hi Prajwal,

Thank you for reporting this bug. I am trying to reproduce it by the sample app you provide (https://github.com/prajwal-bhat/CameraX) but unable to reproduce it on current devices I have (about 6-8 devices).

May I know what devices do you use to test? (device model and API level)

Are there certain steps to reproduce it?

P.s I add one log entry in the first line of onCaptureSuccess() callback. Launch app, click take picture button several times in a row and check the log to see if the callback come.

commit c5c8c26f936de87146ad9bb9227f3e66205fceaa
MainActivity.java, line: 349

public void onCaptureSuccess(@NonNull ImageProxy image) {

    Log.d("Test", "onCaptureSuccess : " + image);

    Bitmap imageBitmap = rotateImage(imageToBitmap(Objects.requireNonNull(image.getImage())), image.getImageInfo().getRotationDegrees());

    ...
}

Leo

l.venk...@gmail.com 在 2020年6月15日 星期一上午1:22:52 [UTC+8] 的信中寫道：

[Leo Huang]

Hi Venkatesh,

The crash you meet should be another issue on ImageAnalysis. See https://issuetracker.google.com/160105061.

2020-06-12 19:15:20.758 30250-30693/com.microsoft.office.lens.app E/AndroidRuntime: FATAL EXCEPTION: CameraX-camerax_high_priority
Process: com.microsoft.office.lens.app, PID: 30250
java.lang.IllegalStateException: maxImages (4) has already been acquired, call #close before acquiring more.
at android.media.ImageReader.acquireNextImage(ImageReader.java:402)
at android.media.ImageReader.acquireLatestImage(ImageReader.java:287)
at androidx.camera.core.AndroidImageReaderProxy.acquireLatestImage(AndroidImageReaderProxy.java:56)
at androidx.camera.core.SafeCloseImageReaderProxy.acquireLatestImage(SafeCloseImageReaderProxy.java:64)
at androidx.camera.core.ImageAnalysisNonBlockingAnalyzer.onImageAvailable(ImageAnalysisNonBlockingAnalyzer.java:66)

at androidx.camera.core.SafeCloseImageReaderProxy.lambda$setOnImageAvailableListener2SafeCloseImageReaderProxy(SafeCloseImageReaderProxy.java:168)

Leo

Leo Huang 在 2020年6月29日 星期一下午1:51:14 [UTC+8] 的信中寫道：