new file mode 100755
@@ -0,0 +1,95 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Generate Python bindings enums for controls from YAML
+
+import argparse
+import string
+import sys
+import yaml
+
+
+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 generate_py(controls):
+ out = ""
+
+ for ctrl in controls:
+ name, ctrl = ctrl.popitem()
+
+ enum = ctrl.get('enum')
+ if not enum:
+ continue
+
+ if ctrl.get('draft'):
+ ns = "libcamera::controls::draft::"
+ else:
+ ns = "libcamera::controls::"
+
+ cpp_enum = name + "Enum"
+
+ out += "\tpy::enum_<{}{}>(m, \"{}\")\n".format(ns, cpp_enum, name)
+
+ if name == "LensShadingMapMode":
+ prefix = "LensShadingMapMode"
+ else:
+ prefix = find_common_prefix([e["name"] for e in enum])
+
+ for entry in enum:
+ cpp_enum = entry["name"]
+ py_enum = entry["name"][len(prefix):]
+
+ out += "\t\t.value(\"{}\", {}{})\n".format(py_enum, ns, cpp_enum)
+
+ out += "\t;\n"
+
+ return {"enums": out}
+
+
+def fill_template(template, data):
+ template = open(template, 'rb').read()
+ template = template.decode('utf-8')
+ template = string.Template(template)
+ return template.substitute(data)
+
+
+def main(argv):
+ # Parse command line arguments
+ parser = argparse.ArgumentParser()
+ parser.add_argument('-o', dest='output', metavar='file', type=str,
+ help='Output file name. Defaults to standard output if not specified.')
+ parser.add_argument('input', type=str,
+ help='Input file name.')
+ parser.add_argument('template', type=str,
+ help='Template file name.')
+ args = parser.parse_args(argv[1:])
+
+ data = open(args.input, 'rb').read()
+ controls = yaml.safe_load(data)['controls']
+
+ data = generate_py(controls)
+
+ data = fill_template(args.template, data)
+
+ if args.output:
+ output = open(args.output, 'wb')
+ output.write(data.encode('utf-8'))
+ output.close()
+ else:
+ sys.stdout.write(data)
+
+ return 0
+
+
+if __name__ == '__main__':
+ sys.exit(main(sys.argv))
@@ -17,6 +17,15 @@ pycamera_sources = files([
'pyenums.cpp',
])
+gen_input_files = [meson.source_root() / 'src/libcamera/control_ids.yaml', 'pyenums_generated.cpp.in']
+
+generated_sources = custom_target('py_gen_controls',
+ input : gen_input_files,
+ output : ['pyenums_generated.cpp'],
+ command : ['gen-py-control-enums.py', '-o', '@OUTPUT@', '@INPUT@'])
+
+pycamera_sources += generated_sources
+
pycamera_deps = [
libcamera_public,
py3_dep,
new file mode 100644
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2021, Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+ *
+ * Python bindings
+ *
+ * This file is auto-generated. Do not edit.
+ */
+
+#include <libcamera/libcamera.h>
+
+#include <pybind11/smart_holder.h>
+
+namespace py = pybind11;
+
+using namespace libcamera;
+
+void init_pyenums_generated(py::module& m)
+{
+${enums}
+}
@@ -115,10 +115,12 @@ static void handleRequestCompleted(Request *req)
}
void init_pyenums(py::module &m);
+void init_pyenums_generated(py::module &m);
PYBIND11_MODULE(_libcamera, m)
{
init_pyenums(m);
+ init_pyenums_generated(m);
/* Forward declarations */
Generate enums for controls from control_ids.yaml. The generator script has some heuristics to generate nicer enum names. E.g. instead of having "LensShadingMapMode.LensShadingMapModeOff" we get "LensShadingMapMode.Off". This heuristics may need to be updated when the yaml file is changed or new controls are added. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> --- src/py/libcamera/gen-py-control-enums.py | 95 +++++++++++++++++++++++ src/py/libcamera/meson.build | 9 +++ src/py/libcamera/pyenums_generated.cpp.in | 21 +++++ src/py/libcamera/pymain.cpp | 2 + 4 files changed, 127 insertions(+) create mode 100755 src/py/libcamera/gen-py-control-enums.py create mode 100644 src/py/libcamera/pyenums_generated.cpp.in