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authorTomi Valkeinen <tomi.valkeinen@ideasonboard.com>2022-05-27 17:44:18 +0300
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2022-05-27 22:02:16 +0300
commit9ecf311375c10833c013491f4f77aa2c2a020a28 (patch)
treeef649846aad3053ea477f781f8f2cc258211c4d5
parentc3515cf6e57bf4016f84c1228f26bf7dc69027e1 (diff)
py: Generate pixel formats list
Generate a list of pixel formats under 'libcamera.formats'. The 'formats' is a "dummy" container class, the only purpose of which is to contain the read-only pixel format properties. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
-rwxr-xr-xsrc/py/libcamera/gen-py-formats.py56
-rw-r--r--src/py/libcamera/meson.build12
-rw-r--r--src/py/libcamera/py_formats_generated.cpp.in25
-rw-r--r--src/py/libcamera/py_main.cpp3
4 files changed, 96 insertions, 0 deletions
diff --git a/src/py/libcamera/gen-py-formats.py b/src/py/libcamera/gen-py-formats.py
new file mode 100755
index 00000000..0ff1d12a
--- /dev/null
+++ b/src/py/libcamera/gen-py-formats.py
@@ -0,0 +1,56 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Generate Python format definitions from YAML
+
+import argparse
+import string
+import sys
+import yaml
+
+
+def generate(formats):
+ fmts = []
+
+ for format in formats:
+ name, format = format.popitem()
+ fmts.append(f'\t\t.def_readonly_static("{name}", &libcamera::formats::{name})')
+
+ return {'formats': '\n'.join(fmts)}
+
+
+def fill_template(template, data):
+ with open(template, encoding='utf-8') as f:
+ template = f.read()
+
+ template = string.Template(template)
+ return template.substitute(data)
+
+
+def main(argv):
+ 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:])
+
+ with open(args.input, encoding='utf-8') as f:
+ formats = yaml.safe_load(f)['formats']
+
+ data = generate(formats)
+ data = fill_template(args.template, data)
+
+ if args.output:
+ with open(args.output, 'w', encoding='utf-8') as f:
+ f.write(data)
+ 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 a3388c63..0a7b65f3 100644
--- a/src/py/libcamera/meson.build
+++ b/src/py/libcamera/meson.build
@@ -30,6 +30,18 @@ pycamera_sources += custom_target('py_gen_controls',
output : ['py_control_enums_generated.cpp'],
command : [gen_py_control_enums, '-o', '@OUTPUT@', '@INPUT@'])
+gen_py_formats_input_files = files([
+ '../../libcamera/formats.yaml',
+ 'py_formats_generated.cpp.in',
+])
+
+gen_py_formats = files('gen-py-formats.py')
+
+pycamera_sources += custom_target('py_gen_formats',
+ input : gen_py_formats_input_files,
+ output : ['py_formats_generated.cpp'],
+ command : [gen_py_formats, '-o', '@OUTPUT@', '@INPUT@'])
+
pycamera_deps = [
libcamera_public,
py3_dep,
diff --git a/src/py/libcamera/py_formats_generated.cpp.in b/src/py/libcamera/py_formats_generated.cpp.in
new file mode 100644
index 00000000..b88807f3
--- /dev/null
+++ b/src/py/libcamera/py_formats_generated.cpp.in
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2022, Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+ *
+ * Python bindings - Auto-generated formats
+ *
+ * This file is auto-generated. Do not edit.
+ */
+
+#include <libcamera/formats.h>
+
+#include <pybind11/smart_holder.h>
+
+namespace py = pybind11;
+
+class PyFormats
+{
+};
+
+void init_py_formats_generated(py::module& m)
+{
+ py::class_<PyFormats>(m, "formats")
+${formats}
+ ;
+}
diff --git a/src/py/libcamera/py_main.cpp b/src/py/libcamera/py_main.cpp
index 1d941160..e7066841 100644
--- a/src/py/libcamera/py_main.cpp
+++ b/src/py/libcamera/py_main.cpp
@@ -132,6 +132,7 @@ static void handleRequestCompleted(Request *req)
void init_py_enums(py::module &m);
void init_py_control_enums_generated(py::module &m);
+void init_py_formats_generated(py::module &m);
void init_py_geometry(py::module &m);
PYBIND11_MODULE(_libcamera, m)
@@ -171,6 +172,8 @@ PYBIND11_MODULE(_libcamera, m)
auto pyColorSpaceRange = py::enum_<ColorSpace::Range>(pyColorSpace, "Range");
auto pyPixelFormat = py::class_<PixelFormat>(m, "PixelFormat");
+ init_py_formats_generated(m);
+
/* Global functions */
m.def("log_set_level", &logSetLevel);