libcamera: Declare empty virtual destructors as defaulted

The base class of polymorphic classes is required to declare a
destructor. Several of these are empty, and can thus be declared as
defaulted.

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

src/android/jpeg/encoder.h

@@ -14,7 +14,7 @@
 class Encoder
 {
 public:
-	virtual ~Encoder() {}
+	virtual ~Encoder() = default;
 
 	virtual int configure(const libcamera::StreamConfiguration &cfg) = 0;
 	virtual int encode(const libcamera::FrameBuffer &source,

src/android/post_processor.h

@@ -16,7 +16,7 @@ class CameraMetadata;
 class PostProcessor
 {
 public:
-	virtual ~PostProcessor() {}
+	virtual ~PostProcessor() = default;
 
 	virtual int configure(const libcamera::StreamConfiguration &inCfg,
 			      const libcamera::StreamConfiguration &outCfg) = 0;

src/cam/options.h

@@ -73,7 +73,7 @@ public:
 	{
 	};
 
-	virtual ~KeyValueParser() {}
+	virtual ~KeyValueParser() = default;
 
 	bool addOption(const char *name, OptionType type, const char *help,
 		       OptionArgument argument = ArgumentNone);

src/ipa/raspberrypi/controller/algorithm.hpp

@@ -30,7 +30,7 @@ public:
 		: controller_(controller), paused_(false)
 	{
 	}
-	virtual ~Algorithm() {}
+	virtual ~Algorithm() = default;
 	virtual char const *Name() const = 0;
 	virtual bool IsPaused() const { return paused_; }
 	virtual void Pause() { paused_ = true; }

src/ipa/raspberrypi/md_parser.hpp

@@ -67,7 +67,7 @@ public:
 		ERROR = 2
 	};
 	MdParser() : reset_(true) {}
-	virtual ~MdParser() {}
+	virtual ~MdParser() = default;
 	void Reset() { reset_ = true; }
 	void SetBitsPerPixel(int bpp) { bits_per_pixel_ = bpp; }
 	void SetNumLines(unsigned int num_lines) { num_lines_ = num_lines; }

src/libcamera/pipeline/rkisp1/timeline.h

@@ -22,7 +22,7 @@ public:
 	FrameAction(unsigned int frame, unsigned int type)
 		: frame_(frame), type_(type) {}
 
-	virtual ~FrameAction() {}
+	virtual ~FrameAction() = default;
 
 	unsigned int frame() const { return frame_; }
 	unsigned int type() const { return type_; }
@@ -38,7 +38,7 @@ class Timeline
 {
 public:
 	Timeline();
-	virtual ~Timeline() {}
+	virtual ~Timeline() = default;
 
 	virtual void reset();
 	virtual void scheduleAction(std::unique_ptr<FrameAction> action);

src/qcam/viewfinder.h

@@ -22,7 +22,7 @@ struct MappedBuffer {
 class ViewFinder
 {
 public:
-	virtual ~ViewFinder() {}
+	virtual ~ViewFinder() = default;
 
 	virtual const QList<libcamera::PixelFormat> &nativeFormats() const = 0;