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# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (C) 2019, Raspberry Pi Ltd
# Copyright (C) 2022, Paul Elder <paul.elder@ideasonboard.com>
#
# Utilities for libtuning
import decimal
import math
import numpy as np
import os
from pathlib import Path
import re
import sys
import libtuning as lt
from libtuning.image import Image
from libtuning.macbeth import locate_macbeth
# Utility functions
def eprint(*args, **kwargs):
print(*args, file=sys.stderr, **kwargs)
def get_module_by_type_name(modules, name):
for module in modules:
if module.type == name:
return module
return None
# Private utility functions
def _list_image_files(directory):
d = Path(directory)
files = [d.joinpath(f) for f in os.listdir(d)
if re.search(r'\.(jp[e]g$)|(dng$)', f)]
files.sort()
return files
def _parse_image_filename(fn: Path):
result = re.search(r'^(alsc_)?(\d+)[kK]_(\d+)?[lLuU]?.\w{3,4}$', fn.name)
if result is None:
eprint(f'The file name of {fn.name} is incorrectly formatted')
return None, None, None
color = int(result.group(2))
lsc_only = result.group(1) is not None
lux = None if lsc_only else int(result.group(3))
return color, lux, lsc_only
# \todo Implement this from check_imgs() in ctt.py
def _validate_images(images):
return True
# Public utility functions
# @brief Load images into a single list of Image instances
# @param input_dir Directory from which to load image files
# @param config Configuration dictionary
# @param load_nonlsc Whether or not to load non-lsc images
# @param load_lsc Whether or not to load lsc-only images
# @return A list of Image instances
def load_images(input_dir: str, config: dict, load_nonlsc: bool, load_lsc: bool) -> list:
files = _list_image_files(input_dir)
if len(files) == 0:
eprint(f'No images found in {input_dir}')
return None
images = []
for f in files:
color, lux, lsc_only = _parse_image_filename(f)
if color is None:
continue
# Skip lsc image if we don't need it
if lsc_only and not load_lsc:
eprint(f'Skipping {f.name} as this tuner has no LSC module')
continue
# Skip non-lsc image if we don't need it
if not lsc_only and not load_nonlsc:
eprint(f'Skipping {f.name} as this tuner only has an LSC module')
continue
# Load image
try:
image = Image(f)
except Exception as e:
eprint(f'Failed to load image {f.name}: {e}')
continue
# Populate simple fields
image.lsc_only = lsc_only
image.color = color
image.lux = lux
# Black level comes from the TIFF tags, but they are overridable by the
# config file.
if 'blacklevel' in config['general']:
image.blacklevel_16 = config['general']['blacklevel']
if lsc_only:
images.append(image)
continue
# Handle macbeth
macbeth = locate_macbeth(config)
if macbeth is None:
continue
images.append(image)
if not _validate_images(images):
return None
return images
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