ipa: Pass IPA initialization settings to IPAInterface::init()

Add a new IPASettings class to pass IPA initialization settings through
the IPAInterface::init() method. The settings currently only contain the
name of a configuration file, and are expected to be extended later.

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

src/libcamera/proxy/ipa_proxy_linux.cpp

@@ -26,7 +26,7 @@ public:
 	IPAProxyLinux(IPAModule *ipam);
 	~IPAProxyLinux();
 
-	int init() override { return 0; }
+	int init(const IPASettings &settings) override { return 0; }
 	int start() override { return 0; }
 	void stop() override {}
 	void configure(const std::map<unsigned int, IPAStream> &streamConfig,

src/libcamera/proxy/ipa_proxy_thread.cpp

@@ -25,7 +25,7 @@ class IPAProxyThread : public IPAProxy, public Object
 public:
 	IPAProxyThread(IPAModule *ipam);
 
-	int init() override;
+	int init(const IPASettings &settings) override;
 	int start() override;
 	void stop() override;
 
@@ -97,9 +97,9 @@ IPAProxyThread::IPAProxyThread(IPAModule *ipam)
 	valid_ = true;
 }
 
-int IPAProxyThread::init()
+int IPAProxyThread::init(const IPASettings &settings)
 {
-	int ret = ipa_->init();
+	int ret = ipa_->init(settings);
 	if (ret)
 		return ret;