meson: Remove -Wno-unused-parameter

We build libcamera with -Wno-unused-parameter and this doesn't cause
much issue internally. However, it prevents catching unused parameters
in inline functions defined in public headers. This can lead to
compilation warnings for applications compiled without
-Wno-unused-parameter.

To catch those issues, remove -Wno-unused-parameter and fix all the
related warnings with [[maybe_unused]].

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>

4 files changed, 19 insertions, 15 deletions

diff --git a/src/ipa/raspberrypi/controller/rpi/agc.cpp b/src/ipa/raspberrypi/controller/rpi/agc.cpp
index c02b5ece..3573f36b 100644
--- a/src/ipa/raspberrypi/controller/rpi/agc.cpp
+++ b/src/ipa/raspberrypi/controller/rpi/agc.cpp
@@ -221,7 +221,8 @@ void Agc::SetConstraintMode(std::string const &constraint_mode_name)
 	constraint_mode_name_ = constraint_mode_name;
 }
 
-void Agc::SwitchMode(CameraMode const &camera_mode, Metadata *metadata)
+void Agc::SwitchMode([[maybe_unused]] CameraMode const &camera_mode,
+		     Metadata *metadata)
 {
 	// On a mode switch, it's possible the exposure profile could change,
 	// so we run through the dividing up of exposure/gain again and
diff --git a/src/ipa/raspberrypi/raspberrypi.cpp b/src/ipa/raspberrypi/raspberrypi.cpp
index 37472087..4557016c 100644
--- a/src/ipa/raspberrypi/raspberrypi.cpp
+++ b/src/ipa/raspberrypi/raspberrypi.cpp
@@ -191,7 +191,7 @@ void IPARPi::setMode(const CameraSensorInfo &sensorInfo)
 }
 
 void IPARPi::configure(const CameraSensorInfo &sensorInfo,
-		       const std::map<unsigned int, IPAStream> &streamConfig,
+		       [[maybe_unused]] const std::map<unsigned int, IPAStream> &streamConfig,
 		       const std::map<unsigned int, const ControlInfoMap &> &entityControls,
 		       const IPAOperationData &ipaConfig,
 		       IPAOperationData *result)
diff --git a/src/ipa/rkisp1/rkisp1.cpp b/src/ipa/rkisp1/rkisp1.cpp
index 3a1c50c4..d95d902a 100644
--- a/src/ipa/rkisp1/rkisp1.cpp
+++ b/src/ipa/rkisp1/rkisp1.cpp
@@ -32,7 +32,10 @@ LOG_DEFINE_CATEGORY(IPARkISP1)
 class IPARkISP1 : public IPAInterface
 {
 public:
-	int init(const IPASettings &settings) override { return 0; }
+	int init([[maybe_unused]] const IPASettings &settings) override
+	{
+		return 0;
+	}
 	int start() override { return 0; }
 	void stop() override {}
 
@@ -75,11 +78,11 @@ private:
  * assemble one. Make sure the reported sensor information are relevant
  * before accessing them.
  */
-void IPARkISP1::configure(const CameraSensorInfo &info,
-			  const std::map<unsigned int, IPAStream> &streamConfig,
+void IPARkISP1::configure([[maybe_unused]] const CameraSensorInfo &info,
+			  [[maybe_unused]] const std::map<unsigned int, IPAStream> &streamConfig,
 			  const std::map<unsigned int, const ControlInfoMap &> &entityControls,
-			  const IPAOperationData &ipaConfig,
-			  IPAOperationData *result)
+			  [[maybe_unused]] const IPAOperationData &ipaConfig,
+			  [[maybe_unused]] IPAOperationData *result)
 {
 	if (entityControls.empty())
 		return;
diff --git a/src/ipa/vimc/vimc.cpp b/src/ipa/vimc/vimc.cpp
index 1593c92d..ef257762 100644
--- a/src/ipa/vimc/vimc.cpp
+++ b/src/ipa/vimc/vimc.cpp
@@ -37,14 +37,14 @@ public:
 	int start() override;
 	void stop() override;
 
-	void configure(const CameraSensorInfo &sensorInfo,
-		       const std::map<unsigned int, IPAStream> &streamConfig,
-		       const std::map<unsigned int, const ControlInfoMap &> &entityControls,
-		       const IPAOperationData &ipaConfig,
-		       IPAOperationData *result) override {}
-	void mapBuffers(const std::vector<IPABuffer> &buffers) override {}
-	void unmapBuffers(const std::vector<unsigned int> &ids) override {}
-	void processEvent(const IPAOperationData &event) override {}
+	void configure([[maybe_unused]] const CameraSensorInfo &sensorInfo,
+		       [[maybe_unused]] const std::map<unsigned int, IPAStream> &streamConfig,
+		       [[maybe_unused]] const std::map<unsigned int, const ControlInfoMap &> &entityControls,
+		       [[maybe_unused]] const IPAOperationData &ipaConfig,
+		       [[maybe_unused]] IPAOperationData *result) override {}
+	void mapBuffers([[maybe_unused]] const std::vector<IPABuffer> &buffers) override {}
+	void unmapBuffers([[maybe_unused]] const std::vector<unsigned int> &ids) override {}
+	void processEvent([[maybe_unused]] const IPAOperationData &event) override {}
 
 private:
 	void initTrace();