I am trying to work on my Nexus 5x with android Camera2 APIs and I am using
googlesamples
android-Camera2Basic <https://github.com/googlesamples/android-Camera2Basic>
My problem is that the JPEG images have too low quality and their size is
much smaller that regular images I am taking with my phone camera app.
According to google documents there should be a key "JPEG_QUALITY" both in
CaptureRequest and in CaptureResult:
"JPEG_QUALITY
Added in API level 21 Key JPEG_QUALITY Compression quality of the final
JPEG image.
85-95 is typical usage range.
Range of valid values: 1-100; larger is higher quality
This key is available on all devices."
However when I ask for the available keys, JPEG_QUALITY key is not
available so I don't how to know what is my current JPEG compression
quallity used and how I can change it.
The code I did inside:
CameraCaptureSession.CaptureCallback CaptureCallback = new
CameraCaptureSession.CaptureCallback() {
@Override
public void onCaptureCompleted(@NonNull CameraCaptureSession
session,
@NonNull CaptureRequest request,
@NonNull TotalCaptureResult result) {
//_TEST_DEBUG
List<CaptureRequest.Key<?>> requestKeys = request.getKeys();
List<CaptureResult.Key<?>> resultKeys = result.getKeys();
requestKeys & resultKeys have many keys including JPEG_ORIENTATION but not
the JPEG_QUALITY key.
Any idea what am I doing wrong? Why can't I find how to change JPEG
compression quality?
Thanks,
Guy
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