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#ifndef HID_MACOS_HH
#define HID_MACOS_HH
#include <QObject>
#include <libusb.h>
#include "errorstack.hh"
#include "radiointerface.hh"
/** Implements the HID radio interface using libusb.
* @ingroup rif */
class HIDevice: public QObject
{
Q_OBJECT
public:
/** Specialization to address a HI device uniquely. */
class Descriptor: public USBDeviceDescriptor
{
public:
/** Constructor from interface info, bus number and device address. */
Descriptor(const USBDeviceInfo &info, uint8_t bus, uint8_t device);
};
public:
/** Connects to the device with given vendor and product ID. */
HIDevice(const USBDeviceDescriptor &descr, const ErrorStack &err=ErrorStack(), QObject *parent=nullptr);
/** Destructor. */
virtual ~HIDevice();
/** Returns @c true if the connection is established. */
bool isOpen() const;
/** Send command/data to the device and store response in @c rdata.
* @param data Pointer to the command/data to send.
* @param nbytes The number of bytes to send.
* @param rdata Pointer to receive buffer.
* @param rlength Size of receive buffer.
* @param err Passes an error stack to put error messages on. */
bool hid_send_recv(const unsigned char *data, unsigned nbytes,
unsigned char *rdata, unsigned rlength, const ErrorStack &err=ErrorStack());
/** Close connection to device. */
void close();
public:
/** Finds all HID interfaces with the specified VID/PID combination. */
static QList<USBDeviceDescriptor> detect(uint16_t vid, uint16_t pid);
protected:
/** Internal used implementation of send_recv(). */
int write_read(const unsigned char *data, unsigned length,
unsigned char *reply, unsigned rlength, const ErrorStack &err=ErrorStack());
/** Callback for response data. */
static void read_callback(struct libusb_transfer *t);
protected:
/** libusb context. */
libusb_context *_ctx;
/** libusb device. */
libusb_device_handle *_dev;
/** libusb async transfer descriptor. */
struct libusb_transfer *_transfer;
/** Receive buffer. */
unsigned char _receive_buf[42];
/** Receive result. */
volatile int _nbytes_received;
/** Internal used error stack for the static callback function. */
ErrorStack _cbError;
};
#endif // HID_MACOS_HH
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