mouse_m908/include/helpers.cpp

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2019-11-08 17:10:30 -07:00
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
*/
//helper functions
//init libusb and open mouse
int mouse_m908::open_mouse(){
//vars
int res = 0;
//libusb init
res = libusb_init( NULL );
if( res < 0 ){
return res;
}
//open device
_handle = libusb_open_device_with_vid_pid( NULL, _mouse_vid,
_mouse_pid );
if( !_handle ){
return 1;
}
//detach kernel driver on interface 0 if active
if( libusb_kernel_driver_active( _handle, 0 ) ){
res += libusb_detach_kernel_driver( _handle, 0 );
if( res == 0 ){
_detached_driver_0 = true;
} else{
return res;
}
}
//detach kernel driver on interface 1 if active
if( libusb_kernel_driver_active( _handle, 1 ) ){
res += libusb_detach_kernel_driver( _handle, 1 );
if( res == 0 ){
_detached_driver_1 = true;
} else{
return res;
}
}
//detach kernel driver on interface 2 if active
if( libusb_kernel_driver_active( _handle, 2 ) ){
res += libusb_detach_kernel_driver( _handle, 2 );
if( res == 0 ){
_detached_driver_2 = true;
} else{
return res;
}
}
//claim interface 0
res += libusb_claim_interface( _handle, 0 );
if( res != 0 ){
return res;
}
//claim interface 1
res += libusb_claim_interface( _handle, 1 );
if( res != 0 ){
return res;
}
//claim interface 2
res += libusb_claim_interface( _handle, 2 );
if( res != 0 ){
return res;
}
return res;
}
//close mouse
int mouse_m908::close_mouse(){
//release interfaces 0, 1 and 2
libusb_release_interface( _handle, 0 );
libusb_release_interface( _handle, 1 );
libusb_release_interface( _handle, 2 );
//attach kernel driver for interface 0
if( _detached_driver_0 ){
libusb_attach_kernel_driver( _handle, 0 );
}
//attach kernel driver for interface 1
if( _detached_driver_1 ){
libusb_attach_kernel_driver( _handle, 1 );
}
//attach kernel driver for interface 2
if( _detached_driver_2 ){
libusb_attach_kernel_driver( _handle, 2);
}
//exit libusb
libusb_exit( NULL );
return 0;
}