libcamera: ipa_module: add isOpenSource

Add a method to IPAModule to check if the module is open source.
This uses the license field of the member IPAModuleInfo.

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

src/libcamera/include/ipa_module.h

@@ -35,6 +35,8 @@ public:
 	bool match(PipelineHandler *pipe,
 		   uint32_t minVersion, uint32_t maxVersion) const;
 
+	bool isOpenSource() const;
+
 private:
 	struct IPAModuleInfo info_;
 

src/libcamera/ipa_module.cpp

@@ -7,6 +7,8 @@
 
 #include "ipa_module.h"
 
+#include <algorithm>
+#include <array>
 #include <dlfcn.h>
 #include <elf.h>
 #include <errno.h>
@@ -469,4 +471,26 @@ bool IPAModule::match(PipelineHandler *pipe,
 	       !strcmp(info_.pipelineName, pipe->name());
 }
 
+/**
+ * \brief Verify if the IPA module is open source
+ *
+ * \sa IPAModuleInfo::license
+ */
+bool IPAModule::isOpenSource() const
+{
+	static std::array<const char *, sizeof(char *)> osLicenses = {
+		"GPL-2.0-only",
+		"GPL-2.0-or-later",
+		"GPL-3.0-only",
+		"GPL-3.0-or-later",
+		"LGPL-2.1-only",
+		"LGPL-2.1-or-later",
+		"LGPL-3.0-only",
+		"LGPL-3.0-or-later",
+	};
+
+	return std::find(osLicenses.begin(), osLicenses.end(), info_.license)
+	       != osLicenses.end();
+}
+
 } /* namespace libcamera */