334 lines
9.1 KiB
C++
334 lines
9.1 KiB
C++
//=================== Copyright Valve Corporation, All rights reserved. =======
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//
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// Purpose: A wrapper around both the libusb and hidraw versions of HIDAPI
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//
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// The libusb version doesn't support Bluetooth, but not all Linux
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// distributions allow access to /dev/hidraw*
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//
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// This merges the two, at a small performance cost, until distributions
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// have granted access to /dev/hidraw*
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//
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//=============================================================================
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#define NAMESPACE HIDRAW
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#include "../hidapi/hidapi.h"
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#undef NAMESPACE
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#undef HIDAPI_H__
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#define NAMESPACE HIDUSB
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#include "../hidapi/hidapi.h"
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#undef NAMESPACE
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#undef HIDAPI_H__
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#include "../hidapi/hidapi.h"
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#include "../../../public/tier1/utlvector.h"
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#include "../../../public/tier1/utlhashmap.h"
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template <class T>
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void CopyHIDDeviceInfo( T *pSrc, struct hid_device_info *pDst )
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{
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pDst->path = pSrc->path ? strdup( pSrc->path ) : NULL;
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pDst->vendor_id = pSrc->vendor_id;
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pDst->product_id = pSrc->product_id;
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pDst->serial_number = pSrc->serial_number ? wcsdup( pSrc->serial_number ) : NULL;
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pDst->release_number = pSrc->release_number;
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pDst->manufacturer_string = pSrc->manufacturer_string ? wcsdup( pSrc->manufacturer_string ) : NULL;
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pDst->product_string = pSrc->product_string ? wcsdup( pSrc->product_string ) : NULL;
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pDst->usage_page = pSrc->usage_page;
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pDst->usage = pSrc->usage;
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pDst->interface_number = pSrc->interface_number;
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pDst->next = NULL;
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}
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extern "C"
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{
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enum EHIDAPIType
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{
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k_EHIDAPIUnknown,
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k_EHIDAPIRAW,
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k_EHIDAPIUSB
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};
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static CUtlHashMap<uintptr_t, EHIDAPIType> s_hashDeviceToAPI;
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static EHIDAPIType GetAPIForDevice( hid_device *pDevice )
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{
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int iIndex = s_hashDeviceToAPI.Find( (uintptr_t)pDevice );
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if ( iIndex != -1 )
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{
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return s_hashDeviceToAPI[ iIndex ];
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}
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return k_EHIDAPIUnknown;
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}
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struct hid_device_info HID_API_EXPORT * HID_API_CALL hid_enumerate(unsigned short vendor_id, unsigned short product_id)
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{
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struct HIDUSB::hid_device_info *usb_devs = HIDUSB::hid_enumerate( vendor_id, product_id );
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struct HIDUSB::hid_device_info *usb_dev;
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struct HIDRAW::hid_device_info *raw_devs = HIDRAW::hid_enumerate( vendor_id, product_id );
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struct HIDRAW::hid_device_info *raw_dev;
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struct hid_device_info *devs = NULL, *last = NULL, *new_dev;
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for ( usb_dev = usb_devs; usb_dev; usb_dev = usb_dev->next )
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{
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bool bFound = false;
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for ( raw_dev = raw_devs; raw_dev; raw_dev = raw_dev->next )
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{
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if ( usb_dev->vendor_id == raw_dev->vendor_id && usb_dev->product_id == raw_dev->product_id )
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{
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bFound = true;
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break;
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}
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}
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//printf("%s USB device VID/PID 0x%.4x/0x%.4x, %ls %ls\n", bFound ? "Found matching" : "Added new", usb_dev->vendor_id, usb_dev->product_id, usb_dev->manufacturer_string, usb_dev->product_string );
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if ( !bFound )
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{
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new_dev = new struct hid_device_info;
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CopyHIDDeviceInfo( usb_dev, new_dev );
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if ( last )
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{
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last->next = new_dev;
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}
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else
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{
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devs = new_dev;
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}
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last = new_dev;
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}
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}
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HIDUSB::hid_free_enumeration( usb_devs );
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for ( raw_dev = raw_devs; raw_dev; raw_dev = raw_dev->next )
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{
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new_dev = new struct hid_device_info;
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CopyHIDDeviceInfo( raw_dev, new_dev );
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new_dev->next = NULL;
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if ( last )
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{
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last->next = new_dev;
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}
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else
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{
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devs = new_dev;
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}
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last = new_dev;
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}
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HIDRAW::hid_free_enumeration( raw_devs );
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return devs;
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}
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void HID_API_EXPORT HID_API_CALL hid_free_enumeration(struct hid_device_info *devs)
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{
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while ( devs )
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{
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struct hid_device_info *next = devs->next;
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free( devs->path );
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free( devs->serial_number );
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free( devs->manufacturer_string );
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free( devs->product_string );
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delete devs;
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devs = next;
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}
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}
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HID_API_EXPORT hid_device * HID_API_CALL hid_open(unsigned short vendor_id, unsigned short product_id, const wchar_t *serial_number)
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{
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hid_device *pDevice = NULL;
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if ( ( pDevice = (hid_device *)HIDRAW::hid_open( vendor_id, product_id, serial_number ) ) != NULL )
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{
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s_hashDeviceToAPI.Insert( (uintptr_t)pDevice, k_EHIDAPIRAW );
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return pDevice;
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}
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if ( ( pDevice = (hid_device *)HIDUSB::hid_open( vendor_id, product_id, serial_number ) ) != NULL )
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{
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s_hashDeviceToAPI.Insert( (uintptr_t)pDevice, k_EHIDAPIUSB );
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return pDevice;
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}
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return NULL;
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}
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HID_API_EXPORT hid_device * HID_API_CALL hid_open_path(const char *path, int bExclusive)
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{
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hid_device *pDevice = NULL;
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if ( ( pDevice = (hid_device *)HIDRAW::hid_open_path( path, bExclusive ) ) != NULL )
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{
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s_hashDeviceToAPI.Insert( (uintptr_t)pDevice, k_EHIDAPIRAW );
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return pDevice;
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}
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if ( ( pDevice = (hid_device *)HIDUSB::hid_open_path( path, bExclusive ) ) != NULL )
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{
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s_hashDeviceToAPI.Insert( (uintptr_t)pDevice, k_EHIDAPIUSB );
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return pDevice;
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}
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return NULL;
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}
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int HID_API_EXPORT HID_API_CALL hid_write(hid_device *device, const unsigned char *data, size_t length)
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{
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switch ( GetAPIForDevice( device ) )
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{
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case k_EHIDAPIRAW:
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return HIDRAW::hid_write( (HIDRAW::hid_device*)device, data, length );
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case k_EHIDAPIUSB:
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return HIDUSB::hid_write( (HIDUSB::hid_device*)device, data, length );
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default:
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return -1;
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}
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}
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int HID_API_EXPORT HID_API_CALL hid_read_timeout(hid_device *device, unsigned char *data, size_t length, int milliseconds)
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{
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switch ( GetAPIForDevice( device ) )
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{
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case k_EHIDAPIRAW:
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return HIDRAW::hid_read_timeout( (HIDRAW::hid_device*)device, data, length, milliseconds );
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case k_EHIDAPIUSB:
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return HIDUSB::hid_read_timeout( (HIDUSB::hid_device*)device, data, length, milliseconds );
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default:
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return -1;
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}
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}
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int HID_API_EXPORT HID_API_CALL hid_read(hid_device *device, unsigned char *data, size_t length)
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{
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switch ( GetAPIForDevice( device ) )
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{
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case k_EHIDAPIRAW:
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return HIDRAW::hid_read( (HIDRAW::hid_device*)device, data, length );
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case k_EHIDAPIUSB:
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return HIDUSB::hid_read( (HIDUSB::hid_device*)device, data, length );
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default:
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return -1;
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}
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}
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int HID_API_EXPORT HID_API_CALL hid_set_nonblocking(hid_device *device, int nonblock)
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{
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switch ( GetAPIForDevice( device ) )
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{
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case k_EHIDAPIRAW:
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return HIDRAW::hid_set_nonblocking( (HIDRAW::hid_device*)device, nonblock );
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case k_EHIDAPIUSB:
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return HIDUSB::hid_set_nonblocking( (HIDUSB::hid_device*)device, nonblock );
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default:
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return -1;
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}
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}
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int HID_API_EXPORT HID_API_CALL hid_send_feature_report(hid_device *device, const unsigned char *data, size_t length)
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{
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switch ( GetAPIForDevice( device ) )
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{
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case k_EHIDAPIRAW:
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return HIDRAW::hid_send_feature_report( (HIDRAW::hid_device*)device, data, length );
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case k_EHIDAPIUSB:
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return HIDUSB::hid_send_feature_report( (HIDUSB::hid_device*)device, data, length );
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default:
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return -1;
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}
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}
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int HID_API_EXPORT HID_API_CALL hid_get_feature_report(hid_device *device, unsigned char *data, size_t length)
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{
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switch ( GetAPIForDevice( device ) )
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{
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case k_EHIDAPIRAW:
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return HIDRAW::hid_get_feature_report( (HIDRAW::hid_device*)device, data, length );
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case k_EHIDAPIUSB:
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return HIDUSB::hid_get_feature_report( (HIDUSB::hid_device*)device, data, length );
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default:
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return -1;
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}
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}
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void HID_API_EXPORT HID_API_CALL hid_close(hid_device *device)
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{
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switch ( GetAPIForDevice( device ) )
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{
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case k_EHIDAPIRAW:
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HIDRAW::hid_close( (HIDRAW::hid_device*)device );
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break;
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case k_EHIDAPIUSB:
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HIDUSB::hid_close( (HIDUSB::hid_device*)device );
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break;
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default:
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break;
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}
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s_hashDeviceToAPI.Remove( (uintptr_t)device );
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}
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int HID_API_EXPORT_CALL hid_get_manufacturer_string(hid_device *device, wchar_t *string, size_t maxlen)
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{
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switch ( GetAPIForDevice( device ) )
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{
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case k_EHIDAPIRAW:
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return HIDRAW::hid_get_manufacturer_string( (HIDRAW::hid_device*)device, string, maxlen );
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case k_EHIDAPIUSB:
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return HIDUSB::hid_get_manufacturer_string( (HIDUSB::hid_device*)device, string, maxlen );
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default:
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return -1;
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}
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}
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int HID_API_EXPORT_CALL hid_get_product_string(hid_device *device, wchar_t *string, size_t maxlen)
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{
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switch ( GetAPIForDevice( device ) )
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{
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case k_EHIDAPIRAW:
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return HIDRAW::hid_get_product_string( (HIDRAW::hid_device*)device, string, maxlen );
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case k_EHIDAPIUSB:
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return HIDUSB::hid_get_product_string( (HIDUSB::hid_device*)device, string, maxlen );
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default:
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return -1;
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}
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}
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int HID_API_EXPORT_CALL hid_get_serial_number_string(hid_device *device, wchar_t *string, size_t maxlen)
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{
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switch ( GetAPIForDevice( device ) )
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{
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case k_EHIDAPIRAW:
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return HIDRAW::hid_get_serial_number_string( (HIDRAW::hid_device*)device, string, maxlen );
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case k_EHIDAPIUSB:
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return HIDUSB::hid_get_serial_number_string( (HIDUSB::hid_device*)device, string, maxlen );
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default:
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return -1;
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}
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}
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int HID_API_EXPORT_CALL hid_get_indexed_string(hid_device *device, int string_index, wchar_t *string, size_t maxlen)
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{
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switch ( GetAPIForDevice( device ) )
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{
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case k_EHIDAPIRAW:
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return HIDRAW::hid_get_indexed_string( (HIDRAW::hid_device*)device, string_index, string, maxlen );
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case k_EHIDAPIUSB:
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return HIDUSB::hid_get_indexed_string( (HIDUSB::hid_device*)device, string_index, string, maxlen );
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default:
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return -1;
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}
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}
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HID_API_EXPORT const wchar_t* HID_API_CALL hid_error(hid_device *device)
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{
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switch ( GetAPIForDevice( device ) )
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{
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case k_EHIDAPIRAW:
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return HIDRAW::hid_error( (HIDRAW::hid_device*)device );
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case k_EHIDAPIUSB:
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return HIDUSB::hid_error( (HIDUSB::hid_device*)device );
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default:
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return NULL;
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}
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}
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}
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