Just created a camera preview in Android with CameraX with the following configuration:
PreviewConfig previewConfig = new PreviewConfig.Builder()
.setLensFacing(CameraX.LensFacing.FRONT)
.setTargetResolution(new Size(720, 720))
.build();
Preview preview = new Preview(previewConfig);
Now, the problem is that such target resolution may not be available, in which case the preview will choose a resolution closed to the requested one. What I'm asking here is a way to know which resolution has effectively be chosen by the preview.
Thanks in advance!
Actually it is possible. I've found out after a little bit of source code digging that after calling bindToLifecycle on your cameraProvider:
camera = cameraProvider.bindToLifecycle(lifecycleOwner, cameraSelector, previewUseCase, imageCaptureUseCase, analyzerUseCase)
You will be able to retrieve resolution selected for each applicable usecase:
val captureSize = imageCaptureUseCase.attachedSurfaceResolution ?: Size(0, 0)
val previewSize = previewUseCase.attachedSurfaceResolution ?: Size(0, 0)
Hope this helps