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#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0-or-later
#
# Generate Python bindings controls from YAML
import argparse
import jinja2
import sys
import yaml
from controls import Control
def find_common_prefix(strings):
prefix = strings[0]
for string in strings[1:]:
while string[:len(prefix)] != prefix and prefix:
prefix = prefix[:len(prefix) - 1]
if not prefix:
break
return prefix
def extend_control(ctrl, mode):
if ctrl.vendor != 'libcamera':
ctrl.klass = ctrl.vendor
ctrl.namespace = f'{ctrl.vendor}::'
else:
ctrl.klass = mode
ctrl.namespace = ''
if not ctrl.is_enum:
return ctrl
if mode == 'controls':
# Adjustments for controls
if ctrl.name == 'LensShadingMapMode':
prefix = 'LensShadingMapMode'
else:
prefix = find_common_prefix([e.name for e in ctrl.enum_values])
else:
# Adjustments for properties
prefix = find_common_prefix([e.name for e in ctrl.enum_values])
for enum in ctrl.enum_values:
enum.py_name = enum.name[len(prefix):]
return ctrl
def main(argv):
headers = {
'controls': 'control_ids.h',
'properties': 'property_ids.h',
}
# Parse command line arguments
parser = argparse.ArgumentParser()
parser.add_argument('--mode', '-m', type=str, required=True,
help='Mode is either "controls" or "properties"')
parser.add_argument('--output', '-o', metavar='file', type=str,
help='Output file name. Defaults to standard output if not specified.')
parser.add_argument('--template', '-t', type=str, required=True,
help='Template file name.')
parser.add_argument('input', type=str, nargs='+',
help='Input file name.')
args = parser.parse_args(argv[1:])
if not headers.get(args.mode):
print(f'Invalid mode option "{args.mode}"', file=sys.stderr)
return -1
controls = []
vendors = []
for input in args.input:
data = yaml.safe_load(open(input, 'rb').read())
vendor = data['vendor']
if vendor != 'libcamera':
vendors.append(vendor)
for ctrl in data['controls']:
ctrl = Control(*ctrl.popitem(), vendor, args.mode)
controls.append(extend_control(ctrl, args.mode))
data = {
'mode': args.mode,
'header': headers[args.mode],
'vendors': vendors,
'controls': controls,
}
env = jinja2.Environment()
template = env.from_string(open(args.template, 'r', encoding='utf-8').read())
string = template.render(data)
if args.output:
output = open(args.output, 'w', encoding='utf-8')
output.write(string)
output.close()
else:
sys.stdout.write(string)
return 0
if __name__ == '__main__':
sys.exit(main(sys.argv))
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