Deamon management

daemon/g910_device.h

@@ -0,0 +1,50 @@
+// gKeyMapper daemon - raw USB HID access to the keyboard's vendor interface.
+#ifndef GKEYMAPPER_DAEMON_GKEY_DEVICE_H
+#define GKEYMAPPER_DAEMON_GKEY_DEVICE_H
+
+#include <cstdint>
+
+#include "device_tables.h"
+
+struct libusb_context;
+struct libusb_device_handle;
+
+namespace gkeymapper::daemon {
+
+class GKeyDevice {
+public:
+    GKeyDevice() = default;
+    ~GKeyDevice();
+
+    GKeyDevice(const GKeyDevice&) = delete;
+    GKeyDevice& operator=(const GKeyDevice&) = delete;
+
+    // Finds a supported keyboard, opens it and detaches the kernel driver from
+    // the vendor interface. Returns false (and logs) if none is found.
+    bool open();
+    void close();
+    bool is_open() const { return handle_ != nullptr; }
+
+    // Sends the "stop mapping G-keys to F-keys" command if the model needs it.
+    bool disable_binding();
+
+    // Reads one interrupt report. Returns the number of bytes (>0), 0 on
+    // timeout, or a negative value on error.
+    int read_report(uint8_t* buffer, int length, int timeoutMs);
+
+    const DeviceProfile* profile() const { return profile_; }
+
+private:
+    bool find_endpoint();
+
+    libusb_context* context_ = nullptr;
+    libusb_device_handle* handle_ = nullptr;
+    const DeviceProfile* profile_ = nullptr;
+    uint8_t endpoint_ = 0;
+    int claimed_interface_ = -1;
+    bool detached_kernel_driver_ = false;
+};
+
+} // namespace gkeymapper::daemon
+
+#endif // GKEYMAPPER_DAEMON_GKEY_DEVICE_H