[BUG] Raspberry Pi 4: Cannot import name 'Size' or 'ControlType' from libcamera depending on version of libcamera

Describe the bug I can’t seem to import from picamera2 regardless of the libcamera version I’m using.

When I enable “Legacy Camera Support” in raspi-config, picamera2 fails to import ‘Size’ from libcamera. When I install a more recent libcamera, picamera2 fails to import ‘ControlType’.

I also checked the libcamera API documentation (https://www.libcamera.org/api-html/classes.html) and I don’t see a ControlType class?

Is there a recommended version of libcamera to install?

To Reproduce Raspberry Pi 4 (4 GB RAM model) Raspberry PI OS Lite (32 bit, Buster-base Release 2022-04-04)

Sample program:

from picamera2 import PiCamera
# That's all that's required

Install picamera2 with no gui according to workaround here: https://github.com/raspberrypi/picamera2/issues/184 In sudo raspi-config Interface Options -> Legacy Camera, enable Legacy Camera suport. Reboot

Run sample program. Note “cannot import name ‘Size’” error

Install libcamera from wheel: https://github.com/ArduCAM/RaspberryPi/blob/master/Motorized_Focus_Camera/python/libcamera-1.0.2-cp39-cp39-linux_armv7l.whl python3 -m pip install ./libcamera-1.0.2-cp39-cp39-linux_armv7l.whl

Run sample program. Note “cannot import name ‘ControlType’”

Expected behaviour importing PiCamera works

Console Output, Screenshots

With “legacy camera”

Traceback (most recent call last):
  File "/home/pi/RaspberryPi/Motorized_Focus_Camera/python/picam2.py", line 1, in <module>
    from picamera2 import PiCamera
  File "/home/pi/.local/lib/python3.9/site-packages/picamera2/__init__.py", line 1, in <module>
    from .configuration import CameraConfiguration, StreamConfiguration
  File "/home/pi/.local/lib/python3.9/site-packages/picamera2/configuration.py", line 1, in <module>
    from .controls import Controls
  File "/home/pi/.local/lib/python3.9/site-packages/picamera2/controls.py", line 4, in <module>
    from libcamera import ControlType, Size, Rectangle
ImportError: cannot import name 'Size' from 'libcamera' (/usr/lib/python3/dist-packages/libcamera/__init__.py)

With more recent libcamera:

Traceback (most recent call last):
  File "/home/pi/RaspberryPi/Motorized_Focus_Camera/python/./Autofocus.py", line 5, in <module>
    from RpiCamera import Camera
  File "/home/pi/RaspberryPi/Motorized_Focus_Camera/python/RpiCamera.py", line 10, in <module> 
    from picamera2 import Picamera2, Preview
  File "/home/pi/.virtualenvs/moto_cam/lib/python3.9/site-packages/picamera2/__init__.py", line 1, in <module>
    from .configuration import CameraConfiguration, StreamConfiguration
  File "/home/pi/.virtualenvs/moto_cam/lib/python3.9/site-packages/picamera2/configuration.py", line 1, in <module>
    from .controls import Controls
  File "/home/pi/.virtualenvs/moto_cam/lib/python3.9/site-packages/picamera2/controls.py", line 4, in <module>
    from libcamera import ControlType, Size, Rectangle
ImportError: cannot import name 'ControlType' from 'libcamera' (/home/pi/.virtualenvs/moto_cam/lib/python3.9/site-packages/libcamera.cpython-39-arm-linux-gnu

**Hardware :**
Raspberry Pi 4
Arducam 5MP (Repros with RaspiCam v1.3 as well)

**Additional context**
With Legacy Camera support enabled, 

$ sudo ldconfig -v | grep camera libcamera-base.so.0 -> libcamera-base.so.0.0.0

    libcamera.so.0 -> libcamera.so.0.0.0

With it disabled, but installing a wheel:

$ sudo ldconfig -v | grep camera $

[shineworld]

This is my list of commands JUST after installing a clean Raspberry Pi4 Bulleyes 64-bit (64-bit is a MUST to have all to work):

> sudo apt-get update
> sudo apt-get upgrade
> sudo apt-get full-upgrade
> sudo reboot

> sudo nano /boot/config.txt

   for IMX219:
    # Automatically load overlays for detected cameras
    camera_auto_detect=0
    dtoverlay=imx219

  for IMX477:
    # Automatically load overlays for detected cameras
    camera_auto_detect=0
    dtoverlay=imx477

> sudo reboot

Use dmesg to know if all working fine:

> dmesg | grep imx
[    8.527510] imx477 10-001a: Device found is imx477
[    8.528280] imx477 10-001a: Consider updating driver imx477 to match on endpoints

At this point libcamera-apps are already installed and working:

> libcamera-hello --version
libcamera-apps build: 35266e84043f 07-07-2022 (17:59:45)
libcamera build: v0.0.0+3700-f30ad033

Follow activity to enable camera focus motor management (if camera support it because motorized):

> sudo modprobe i2c-dev
> sudo nano /boot/config.txt

Add at end:

    [all]
    dtparam=i2c_vc=on

> sudo reboot

Packages to install to have Picamera2, OpenCV working:

> sudo apt-get update
> sudo apt-get upgrade
> sudo apt-get autoremove
    
> sudo apt install -y python3-libcamera python3-kms++
> sudo apt install -y python3-pyqt5 python3-prctl libatlas-base-dev ffmpeg python3-pip
> pip3 install numpy --upgrade
> pip3 install picamera2
    
> sudo apt install -y python3-opencv
> sudo apt install -y opencv-data

[trezero]

@shineworld I have been fighting to get my camera working for the past 3 weeks and your instructions are the first and only ones that actually worked. Thank you SOO Much! I wish I could buy you a beer (or 5!). Truly appreciate you.