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# SPDX-License-Identifier: GPL-2.0-or-later
#
# Copyright (C) 2022, Paul Elder <paul.elder@ideasonboard.com>
#
# libtuning.py - An infrastructure for camera tuning tools
import argparse
import libtuning as lt
import libtuning.utils as utils
from libtuning.utils import eprint
from enum import Enum, IntEnum
class Color(IntEnum):
R = 0
GR = 1
GB = 2
B = 3
class Debug(Enum):
Plot = 1
# @brief What to do with the leftover pixels after dividing them into ALSC
# sectors, when the division gradient is uniform
# @var Float Force floating point division so all sectors divide equally
# @var DistributeFront Divide the remainder equally (until running out,
# obviously) into the existing sectors, starting from the front
# @var DistributeBack Same as DistributeFront but starting from the back
class Remainder(Enum):
Float = 0
DistributeFront = 1
DistributeBack = 2
# @brief A helper class to contain a default value for a module configuration
# parameter
class Param(object):
# @var Required The value contained in this instance is irrelevant, and the
# value must be provided by the tuning configuration file.
# @var Optional If the value is not provided by the tuning configuration
# file, then the value contained in this instance will be used instead.
# @var Hardcode The value contained in this instance will be used
class Mode(Enum):
Required = 0
Optional = 1
Hardcode = 2
# @param name Name of the parameter. Shall match the name used in the
# configuration file for the parameter
# @param required Whether or not a value is required in the config
# parameter of get_value()
# @param val Default value (only relevant if mode is Optional)
def __init__(self, name: str, required: Mode, val=None):
self.name = name
self.__required = required
self.val = val
def get_value(self, config: dict):
if self.__required is self.Mode.Hardcode:
return self.val
if self.__required is self.Mode.Required and self.name not in config:
raise ValueError(f'Parameter {self.name} is required but not provided in the configuration')
return config[self.name] if self.required else self.val
@property
def required(self):
return self.__required is self.Mode.Required
# @brief Used by libtuning to auto-generate help information for the tuning
# script on the available parameters for the configuration file
# \todo Implement this
@property
def info(self):
raise NotImplementedError
class Tuner(object):
# External functions
def __init__(self, platform_name):
self.name = platform_name
self.modules = []
self.parser = None
self.generator = None
self.output_order = []
self.config = {}
self.output = {}
def add(self, module):
self.modules.append(module)
def set_input_parser(self, parser):
self.parser = parser
def set_output_formatter(self, output):
self.generator = output
def set_output_order(self, modules):
self.output_order = modules
# @brief Convert classes in self.output_order to the instances in self.modules
def _prepare_output_order(self):
output_order = self.output_order
self.output_order = []
for module_type in output_order:
modules = [module for module in self.modules if module.type == module_type.type]
if len(modules) > 1:
eprint(f'Multiple modules found for module type "{module_type.type}"')
return False
if len(modules) < 1:
eprint(f'No module found for module type "{module_type.type}"')
return False
self.output_order.append(modules[0])
return True
# \todo Validate parser and generator at Tuner construction time?
def _validate_settings(self):
if self.parser is None:
eprint('Missing parser')
return False
if self.generator is None:
eprint('Missing generator')
return False
if len(self.modules) == 0:
eprint('No modules added')
return False
if len(self.output_order) != len(self.modules):
eprint('Number of outputs does not match number of modules')
return False
return True
def _process_args(self, argv, platform_name):
parser = argparse.ArgumentParser(description=f'Camera Tuning for {platform_name}')
parser.add_argument('-i', '--input', type=str, required=True,
help='''Directory containing calibration images (required).
Images for ALSC must be named "alsc_{Color Temperature}k_1[u].dng",
and all other images must be named "{Color Temperature}k_{Lux Level}l.dng"''')
parser.add_argument('-o', '--output', type=str, required=True,
help='Output file (required)')
# It is not our duty to scan all modules to figure out their default
# options, so simply return an empty configuration if none is provided.
parser.add_argument('-c', '--config', type=str, default='',
help='Config file (optional)')
# \todo Check if we really need this or if stderr is good enough, or if
# we want a better logging infrastructure with log levels
parser.add_argument('-l', '--log', type=str, default=None,
help='Output log file (optional)')
return parser.parse_args(argv[1:])
def run(self, argv):
args = self._process_args(argv, self.name)
if args is None:
return -1
if not self._validate_settings():
return -1
if not self._prepare_output_order():
return -1
if len(args.config) > 0:
self.config, disable = self.parser.parse(args.config, self.modules)
else:
self.config = {'general': {}}
disable = []
# Remove disabled modules
for module in disable:
if module in self.modules:
self.modules.remove(module)
for module in self.modules:
if not module.validate_config(self.config):
eprint(f'Config is invalid for module {module.type}')
return -1
has_lsc = any(isinstance(m, lt.modules.lsc.LSC) for m in self.modules)
# Only one LSC module allowed
has_only_lsc = has_lsc and len(self.modules) == 1
images = utils.load_images(args.input, self.config, not has_only_lsc, has_lsc)
if images is None or len(images) == 0:
eprint(f'No images were found, or able to load')
return -1
# Do the tuning
for module in self.modules:
out = module.process(self.config, images, self.output)
if out is None:
eprint(f'Module {module.name} failed to process, aborting')
break
self.output[module] = out
self.generator.write(args.output, self.output, self.output_order)
return 0
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