/*
HIDAPI - Multi-Platform library for communication with HID devices.
8/22/2009 Alan Ott, Signal 11 Software
*/
#pragma once
#ifdef _WIN32
#include <windows.h>
typedef DWORD uint32_t;
extern "C"{
#include <hidsdi.h> //HIDD_ATTRIBUTES,HIDP_CAPS
}
#else
#include <stdint.h>
#define INFINITE 0
#define LOWORD(x) (uint16_t)(x)
#define HIWORD(x) (uint16_t)((x)>>16)
namespace hid{
struct Attr{
uint16_t VendorID,ProductID,VersionNumber;
};
struct Caps {
// uint16_t Usage,UsagePage;
int InputReportByteLength,
OutputReportByteLength,
FeatureReportByteLength;
};
}
//#include <libusb-1.0/libusb.h>
#endif
typedef unsigned char byte;
#define elemof(x) (sizeof(x)/sizeof(*(x)))
class HidDev {
virtual bool match() const =0;
virtual void retry_msg() const =0;
char*readbuf;
#if __cplusplus >= 201100L
HidDev&operator=(const HidDev&o) = delete; // No copy operator
HidDev(const HidDev&o) = delete; // No copy constructor
#endif
public:
struct RetStr{ // As a big struct, space is caller-reserved on stack ...
#ifdef WIN32
wchar_t s[128]; // and address is passed as hidden __$ReturnUdt parameter
#else
char s[256];
#endif
};
HidDev();
virtual ~HidDev();
bool connect(unsigned n=0);
// Timeout values are for each attempt.
// Overall time depends on retry_msg delay which should wait 100 ms.
bool setOutputReport(const byte*data, unsigned attempts=5, unsigned ms_each=INFINITE);
bool getInputReport(byte*data, unsigned attempts=5, unsigned ms_each=INFINITE);
bool setFeatureReport(const byte*data, unsigned attempts=5);
bool getFeatureReport(byte*data, unsigned attempts=5);
RetStr getIndexedStr(byte index) const;
RetStr getManufacturerStr() const;
RetStr getProductStr() const;
RetStr getSerialStr() const;
uint32_t vidpid() const; // HIWORD = PID, LOWORD = VID, from attr
operator bool() const {return !!handle;}
unsigned short VersionNumber() const {return attr.VersionNumber;}
private:
#ifdef WIN32
HANDLE handle;
public:
HIDD_ATTRIBUTES attr;
HIDP_CAPS caps;
#else
int handle;
public:
hid::Attr attr;
hid::Caps caps;
#endif
};
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