hyperion.ng/libsrc/leddevice/LedHIDDevice.h

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#pragma once
#include <QObject>
// libusb include
#include <hidapi/hidapi.h>
// Leddevice includes
#include <leddevice/LedDevice.h>
///
/// The LedHIDDevice implements an abstract base-class for LedDevices using an HID-device.
///
class LedHIDDevice : public QObject, public LedDevice
{
Q_OBJECT
public:
///
/// Constructs the LedDevice attached to an HID-device
///
/// @param[in] VendorId The USB VID of the output device
/// @param[in] ProductId The USB PID of the output device
///
LedHIDDevice(const unsigned short VendorId, const unsigned short ProductId, int delayAfterConnect_ms = 0, const bool useFeature = false);
///
/// Destructor of the LedDevice; closes the output device if it is open
///
virtual ~LedHIDDevice();
///
/// Opens and configures the output device
///
/// @return Zero on succes else negative
///
int open();
protected:
/**
* Writes the given bytes to the HID-device and
*
* @param[in[ size The length of the data
* @param[in] data The data
*
* @return Zero on succes else negative
*/
int writeBytes(const unsigned size, const uint8_t *data);
private slots:
/// Unblock the device after a connection delay
void unblockAfterDelay();
private:
// HID VID and PID
const unsigned short _VendorId;
const unsigned short _ProductId;
const bool _useFeature;
/// libusb device handle
hid_device * _deviceHandle;
/// Sleep after the connect before continuing
const int _delayAfterConnect_ms;
bool _blockedForDelay;
};