meson: Move all code generation scripts to utils/codegen/

We have multiple code generation scripts in utils/, mixed with other
miscellaneous utilities, as well as a larger code base based on mojom in
utils/ipc/. To make code sharing easier between the generator scripts,
without creating a mess in the utils/ directory, move all the code
generation code to utils/codegen/.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>

1 files changed, 39 insertions, 0 deletions

diff --git a/utils/codegen/ipc/generate.py b/utils/codegen/ipc/generate.py
new file mode 100755
index 00000000..c2b3fcb7
--- /dev/null
+++ b/utils/codegen/ipc/generate.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright (C) 2020, Google Inc.
+#
+# Author: Paul Elder <paul.elder@ideasonboard.com>
+#
+# Run mojo code generator for generating libcamera IPC files
+
+import os
+import sys
+
+# TODO set sys.pycache_prefix for >= python3.8
+sys.dont_write_bytecode = True
+
+sys.path.insert(0, f'{os.path.dirname(__file__)}/mojo/public/tools/bindings')
+
+import mojo.public.tools.bindings.mojom_bindings_generator as generator
+
+def _GetModulePath(path, output_dir):
+    return os.path.join(output_dir, path.relative_path())
+
+
+# Disable the attribute checker to support our custom attributes. Ideally we
+# should add the attributes to the list of allowed attributes in
+# utils/ipc/mojo/public/tools/bindings/checks/mojom_attributes_check.py, but
+# we're trying hard to use the upstream mojom as-is.
+if hasattr(generator, '_BUILTIN_CHECKS'):
+    del generator._BUILTIN_CHECKS['attributes']
+
+# Override the mojo code generator's generator list to only contain our
+# libcamera generator
+generator._BUILTIN_GENERATORS = {'libcamera': 'mojom_libcamera_generator'}
+
+# Override the mojo code generator's _GetModulePath method to not add
+# the '-module' suffix when searching for mojo modules, so that we can
+# pass the path to the mojom module without having to trim the '-module' suffix
+generator._GetModulePath = _GetModulePath
+
+generator.main()