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Load tuning files in without using Picamera2

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This commit is contained in:
Julian Stirling 2025-10-30 13:15:50 +00:00
parent a2900b0c16
commit cec6f4af73
1 changed files with 16 additions and 16 deletions
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32
src/openflexure_microscope_server/things/camera/picamera_tuning_file_utils.py
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@ -6,34 +6,34 @@ the future.
from typing import Any from typing import Any
from copy import deepcopy from copy import deepcopy
from picamera2 import Picamera2
import numpy as np
import os import os
import json
import numpy as np
THIS_DIR = os.path.dirname(os.path.abspath(__file__)) THIS_DIR = os.path.dirname(os.path.abspath(__file__))
class TuningFileError(RuntimeError):
"""Raised if the tuning file cannot be loaded for any reason."""
def load_default_tuning(sensor_model: str) -> dict: def load_default_tuning(sensor_model: str) -> dict:
"""Load the default tuning file for the camera. """Load the default tuning file for the camera.
This will load the tuning file based on the specified sensor model. This will load the tuning file based on the specified sensor model.
""" """
fname = f"{sensor_model}.json" fname = f"{sensor_model}.json"
custom_path = os.path.join(THIS_DIR, 'tuning_files', fname) # Note the vc4 here. This locks us to Pi4. We will need to update this to support
# the Raspberry Pi 5.
tuning_path = os.path.join(THIS_DIR, "tuning_files", "vc4", fname)
# Attempt to load custom tuning file from OpenFlexure settings
if os.path.isfile(custom_path):
return Picamera2.load_tuning_file(fname, dir=os.path.join(THIS_DIR, 'tuning_files'))
try: try:
return Picamera2.load_tuning_file(fname) with open(tuning_path, "r") as fp:
except RuntimeError: return json.load(fp)
tuning_dir = "/usr/share/libcamera/ipa/raspberrypi" except (json.decoder.JSONDecodeError, IOError) as e:
# from picamera2 v0.3.9 raise TuningFileError(f"Could not load tuning from {tuning_path}.") from e
# The directory above has been removed from the search path seems
# odd - as that's where the files currently are on a default
# Raspbian image. This may need updating if the files have moved
# in future updates to the system libcamera package
return Picamera2.load_tuning_file(fname, dir=tuning_dir)
def find_tuning_algo(tuning: dict[str, dict], name: str) -> dict[str, Any]: def find_tuning_algo(tuning: dict[str, dict], name: str) -> dict[str, Any]: