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-rwxr-xr-xsrc/py/libcamera/gen-py-control-enums.py95
-rw-r--r--src/py/libcamera/meson.build12
-rw-r--r--src/py/libcamera/pyenums_generated.cpp.in21
-rw-r--r--src/py/libcamera/pymain.cpp2
4 files changed, 130 insertions, 0 deletions
diff --git a/src/py/libcamera/gen-py-control-enums.py b/src/py/libcamera/gen-py-control-enums.py
new file mode 100755
index 00000000..dcc28b1a
--- /dev/null
+++ b/src/py/libcamera/gen-py-control-enums.py
@@ -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))
diff --git a/src/py/libcamera/meson.build b/src/py/libcamera/meson.build
index edf4a629..842db1ed 100644
--- a/src/py/libcamera/meson.build
+++ b/src/py/libcamera/meson.build
@@ -17,6 +17,18 @@ pycamera_sources = files([
'pymain.cpp',
])
+gen_input_files = [
+ meson.project_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,
diff --git a/src/py/libcamera/pyenums_generated.cpp.in b/src/py/libcamera/pyenums_generated.cpp.in
new file mode 100644
index 00000000..6aaf4795
--- /dev/null
+++ b/src/py/libcamera/pyenums_generated.cpp.in
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2022, Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+ *
+ * Python bindings - Auto-generated enums
+ *
+ * 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}
+}
diff --git a/src/py/libcamera/pymain.cpp b/src/py/libcamera/pymain.cpp
index 84829e63..fb89975c 100644
--- a/src/py/libcamera/pymain.cpp
+++ b/src/py/libcamera/pymain.cpp
@@ -137,10 +137,12 @@ 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 */