JPG is taken from JPEG stream or manually from RAW?

[Uzver123]

I wonder how JPG is taken using phone JPEG stream or converted from RAW data internally by FreeDCam?

[KillerInk]

its using the jpeg stream. freedcam itself dont have a demosaic algo. what you get in the viewer is from libraw.
greets

[Uzver123]

its using the jpeg stream. freedcam itself dont have a demosaic algo. what you get in the viewer is from libraw.

Then how FreeDcam has different options for sharpening from standard off/fast/high/zsl that offered in Camera2API?

[KillerInk]

well there ist the default camera2 api from android, and there are hidden keys offered by the manufacturs that are device/brand specific.
the hidden keys can get read with reflections.

FreeDcam/app/src/main/java/camera2_hidden_keys/VendorKeyParser.java

Lines 30 to 50 in 60682b2

	public void readVendorKeys(CameraCharacteristics cameraCharacteristics, Class keyclass) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException {
	ArrayList<CaptureRequest.Key> keys = null;
	if (get_mProperties() != null)
	{
	keys = getAllvendorKeysApi29(cameraCharacteristics, keyclass);
	}
	else if (getNativeCopy() != null)
	{
	keys = getAllvendorKeysApi26(cameraCharacteristics, keyclass);
	}
	if (keys != null)
	{
	for (CaptureRequest.Key b : keys)
	{
	Log.d(TAG, b.getName());
	availiblekeys.add(b.getName());
	}
	}
	else Log.d(TAG, "No vendorKeys found " + Build.VERSION.SDK + " " + Build.VERSION.SDK_INT);
	}

but if a key is present, it does not mean it works.
so there is alot try and error involved.
sometimes its also needed, to bring the camera into a different operation mode(opcode) to get a key working.

[Uzver123]

I have phone OnePlus 8 Pro if i take photo in OpenCamera with sharpening off it shows good on preview, but when i take photo it somehow switches sharpening to max there is no difference between sharpening off and high settings for JPG.

In freeDcam if i set sharpening to zero it really is zero, i wonder what's the difference and if understanding this difference can help me locate the way OnePlus alters JPG so i can disable it (i have root).

[KillerInk]

Don't know how good you coding skills are. But you have two possibilities
First mod the camera apk you need.
Second if it's a qcom socs, mod libchromatix.lib that the jpeg stream don't use sharpening.
When I played with it there was only one. But these days I think, is one for every mode.

[Uzver123]

its using the jpeg stream. freedcam itself dont have a demosaic algo. what you get in the viewer is from libraw.
greets

By the way FreeDcam has re-mosaic algo? i know someone who is used it for forcing re-mosaic for camera sensor that had no HW-remosaic in full resolution mode, but when i tried that did not work.