73c1a1d697
Update the ctt_pretty_print_json.py script to generate the new version 2.0 format camera tuning file. This script can be called through the command line to prettify an existing JSON file, or programatically by the CTT to format a new JSON config dictionary. Update the CTT to produce a version 2.0 format json structure and use ctt_pretty_print_json.pretty_print to prettify the output. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by: Naushir Patuck <naush@raspberrypi.com>
116 lines
4.4 KiB
Python
Executable file
116 lines
4.4 KiB
Python
Executable file
#!/usr/bin/env python3
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#
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# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright 2022 Raspberry Pi Ltd
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#
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# Script to pretty print a Raspberry Pi tuning config JSON structure in
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# version 2.0 and later formats.
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import argparse
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import json
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import textwrap
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class Encoder(json.JSONEncoder):
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.indentation_level = 0
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self.hard_break = 120
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self.custom_elems = {
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'table': 16,
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'luminance_lut': 16,
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'ct_curve': 3,
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'ccm': 3,
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'gamma_curve': 2,
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'y_target': 2,
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'prior': 2
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}
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def encode(self, o, node_key=None):
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if isinstance(o, (list, tuple)):
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# Check if we are a flat list of numbers.
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if not any(isinstance(el, (list, tuple, dict)) for el in o):
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s = ', '.join(json.dumps(el) for el in o)
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if node_key in self.custom_elems.keys():
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# Special case handling to specify number of elements in a row for tables, ccm, etc.
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self.indentation_level += 1
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sl = s.split(', ')
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num = self.custom_elems[node_key]
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chunk = [self.indent_str + ', '.join(sl[x:x + num]) for x in range(0, len(sl), num)]
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t = ',\n'.join(chunk)
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self.indentation_level -= 1
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output = f'\n{self.indent_str}[\n{t}\n{self.indent_str}]'
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elif len(s) > self.hard_break - len(self.indent_str):
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# Break a long list with wraps.
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self.indentation_level += 1
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t = textwrap.fill(s, self.hard_break, break_long_words=False,
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initial_indent=self.indent_str, subsequent_indent=self.indent_str)
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self.indentation_level -= 1
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output = f'\n{self.indent_str}[\n{t}\n{self.indent_str}]'
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else:
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# Smaller lists can remain on a single line.
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output = f' [ {s} ]'
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return output
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else:
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# Sub-structures in the list case.
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self.indentation_level += 1
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output = [self.indent_str + self.encode(el) for el in o]
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self.indentation_level -= 1
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output = ',\n'.join(output)
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return f' [\n{output}\n{self.indent_str}]'
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elif isinstance(o, dict):
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self.indentation_level += 1
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output = []
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for k, v in o.items():
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if isinstance(v, dict) and len(v) == 0:
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# Empty config block special case.
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output.append(self.indent_str + f'{json.dumps(k)}: {{ }}')
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else:
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# Only linebreak if the next node is a config block.
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sep = f'\n{self.indent_str}' if isinstance(v, dict) else ''
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output.append(self.indent_str + f'{json.dumps(k)}:{sep}{self.encode(v, k)}')
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output = ',\n'.join(output)
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self.indentation_level -= 1
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return f'{{\n{output}\n{self.indent_str}}}'
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else:
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return ' ' + json.dumps(o)
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@property
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def indent_str(self) -> str:
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return ' ' * self.indentation_level * self.indent
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def iterencode(self, o, **kwargs):
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return self.encode(o)
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def pretty_print(in_json: dict) -> str:
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if 'version' not in in_json or \
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'target' not in in_json or \
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'algorithms' not in in_json or \
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in_json['version'] < 2.0:
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raise RuntimeError('Incompatible JSON dictionary has been provided')
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return json.dumps(in_json, cls=Encoder, indent=4, sort_keys=False)
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(formatter_class=argparse.RawTextHelpFormatter, description=
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'Prettify a version 2.0 camera tuning config JSON file.')
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parser.add_argument('input', type=str, help='Input tuning file.')
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parser.add_argument('output', type=str, nargs='?',
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help='Output converted tuning file. If not provided, the input file will be updated in-place.',
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default=None)
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args = parser.parse_args()
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with open(args.input, 'r') as f:
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in_json = json.load(f)
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out_json = pretty_print(in_json)
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with open(args.output if args.output is not None else args.input, 'w') as f:
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f.write(out_json)
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