ipa: Generate the two dummy IPA modules from the same source

The ipa_dummy.cpp and ipa_dummy_isolate.cpp only differ in the license
reported in the IPAModuleInfo structure. Drop the second file and
generate the two .so from ipa_dummy.cpp, with the license defined
through the command line.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>

src/ipa/ipa_dummy.cpp

@@ -34,7 +34,7 @@ const struct IPAModuleInfo ipaModuleInfo = {
 	0,
 	"PipelineHandlerVimc",
 	"Dummy IPA for Vimc",
-	"LGPL-2.1-or-later",
+	LICENSE,
 };
 
 IPAInterface *ipaCreate()

src/ipa/ipa_dummy_isolate.cpp

@@ -1,47 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-/*
- * Copyright (C) 2019, Google Inc.
- *
- * ipa_dummy_isolate.cpp - Dummy Image Processing Algorithm module that needs
- * to be isolated
- */
-
-#include <iostream>
-
-#include <ipa/ipa_interface.h>
-#include <ipa/ipa_module_info.h>
-
-namespace libcamera {
-
-class IPADummyIsolate : public IPAInterface
-{
-public:
-	int init();
-};
-
-int IPADummyIsolate::init()
-{
-	std::cout << "initializing isolated dummy IPA!" << std::endl;
-	return 0;
-}
-
-/*
- * External IPA module interface
- */
-
-extern "C" {
-const struct IPAModuleInfo ipaModuleInfo = {
-	IPA_MODULE_API_VERSION,
-	0,
-	"PipelineHandlerVimc",
-	"Dummy IPA for Vimc that needs to be isolated",
-	"Proprietary",
-};
-
-IPAInterface *ipaCreate()
-{
-	return new IPADummyIsolate();
-}
-};
-
-}; /* namespace libcamera */

src/ipa/meson.build

@@ -1,17 +1,17 @@
 ipa_dummy_sources = [
-    ['ipa_dummy', 'ipa_dummy.cpp'],
-    ['ipa_dummy_isolate', 'ipa_dummy_isolate.cpp'],
+    ['ipa_dummy',         'LGPL-2.1-or-later'],
+    ['ipa_dummy_isolate', 'Proprietary'],
 ]
 
 ipa_install_dir = join_paths(get_option('libdir'), 'libcamera')
 
 foreach t : ipa_dummy_sources
-    ipa = shared_module(t[0],
-                        t[1],
+    ipa = shared_module(t[0], 'ipa_dummy.cpp',
                         name_prefix : '',
                         include_directories : libcamera_includes,
                         install : true,
-                        install_dir : ipa_install_dir)
+                        install_dir : ipa_install_dir,
+                        cpp_args : '-DLICENSE="' + t[1] + '"')
 endforeach
 
 config_h.set('IPA_MODULE_DIR',