libcamera: ipa_manager: Allow recursive parsing

Provide an optional means to recurse into subdirectories to search for IPA
libraries. This allows IPAs contained within their own build directory
to be found when loading from a non-installed build.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

src/libcamera/include/ipa_manager.h

@@ -32,7 +32,9 @@ private:
 	IPAManager();
 	~IPAManager();
 
-	unsigned int addDir(const char *libDir);
+	void parseDir(const char *libDir, unsigned int maxDepth,
+		      std::vector<std::string> &files);
+	unsigned int addDir(const char *libDir, unsigned int maxDepth = 0);
 };
 
 } /* namespace libcamera */