libcamera: device_match: Introduce USBDeviceMatch

Introduce a USB-specific DeviceMatch derived class.

Generalize the DeviceMatch::match() function by making its only
parameter a CameraDevice instance and dynamically cast to the correct
derived class in the overloaded match() functions.

Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>

1 files changed, 18 insertions, 3 deletions

diff --git a/include/libcamera/internal/device_match.h b/include/libcamera/internal/device_match.h
index 6df7dece..e6608cac 100644
--- a/include/libcamera/internal/device_match.h
+++ b/include/libcamera/internal/device_match.h
@@ -12,12 +12,12 @@
 
 namespace libcamera {
 
-class MediaDevice;
+class CameraDevice;
 
 class DeviceMatch
 {
 public:
-	virtual bool match(const MediaDevice *device) const = 0;
+	virtual bool match(const CameraDevice *device) const = 0;
 };
 
 class MediaDeviceMatch : public DeviceMatch
@@ -26,11 +26,26 @@ public:
 	void add(const std::string &entity);
 	MediaDeviceMatch(const std::string &driver);
 
-	bool match(const MediaDevice *device) const override;
+	bool match(const CameraDevice *device) const override;
 
 private:
 	std::string driver_;
 	std::vector<std::string> entities_;
 };
 
+class USBDeviceMatch : public DeviceMatch
+{
+public:
+	USBDeviceMatch(const std::string &vid, const std::string &pid)
+		: vid_(vid), pid_(pid)
+	{
+	}
+
+	bool match(const CameraDevice *device) const override;
+
+private:
+	std::string vid_;
+	std::string pid_;
+};
+
 }; /* namespace libcamera */