Support 90º degree rotation

[calexandre]

As the topic states, I would like to request support for 90º degree rotation for the camera-streamer.

There's a topic already opened in the OctoPrint forums which eventually led us here.

According to libcamera.org, the library apparently supports the transform function which can be used to apply a 90º degree rotation.

[kbingham]

libcamera supports a 90* rotation - but the RPi ISP hardware doesn't - so the rotation must be handled by some later layer. That could be the browser perhaps in this instance if we can report the rotation desired?

[kbingham]

Or ... perhaps at the encoder stage?

[bra1nDeaD]

+1

I've been searching blind to see how I can rotate 90 degrees CCW. I found that the camera has "properties" that show it can have a value for "Rotation", but I have not yet found a way set this with camera-streamer:

CAMERA Properties:

• property: SensorSensitivity (00000009, type=Float) = 1.000000
• property: SystemDevices (0000000a, type=Integer64) = [ 20750, 20738, 20739, 20740 ]
• property: ScalerCropMaximum (00000008, type=Rectangle) = (348, 434)/1928x1080
• property: ColorFilterArrangement (0000000b, type=Integer32) = 2
• property: PixelArrayActiveAreas (00000007, type=Rectangle) = [ (16, 6)/2592x1944 ]
• property: PixelArraySize (00000005, type=Size) = 2592x1944
• property: Rotation (00000002, type=Integer32) = 0
• property: Location (00000001, type=Integer32) = 2
• property: UnitCellSize (00000004, type=Size) = 1400x1400
• property: Model (00000003, type=String) = ov5647

So far I've only seen how the "options" can be changed. What is the fundamental difference between "options" and "properties" ? Would it be possible to change properties?