X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FInput%2FFGLinuxEventInput.cxx;h=86c04494ea4200826ca7f3e0d7d0907780ebbd04;hb=49677f512b8edaaf22c76761dbbf9c0850c79aad;hp=382a99c8aa0d2b9c5ef51997ae0d26a72e66d795;hpb=a1a610f7d5458004b8fc6fd3ff88bcec660a26f4;p=flightgear.git

diff --git a/src/Input/FGLinuxEventInput.cxx b/src/Input/FGLinuxEventInput.cxx
index 382a99c8a..86c04494e 100644
--- a/src/Input/FGLinuxEventInput.cxx
+++ b/src/Input/FGLinuxEventInput.cxx
@@ -17,18 +17,26 @@
 // 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.
-//
-// $Id$
 
 #ifdef HAVE_CONFIG_H
 #  include <config.h>
 #endif
 
+#include <cstring>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <poll.h>
+#include <linux/input.h>
+#include <dbus/dbus.h>
+#include <fcntl.h>
 #include "FGLinuxEventInput.hxx"
 
 #include <poll.h>
 #include <linux/input.h>
 #include <dbus/dbus.h>
+#include <fcntl.h>
+
+#include <string.h>
 
 struct TypeCode {
   unsigned type;
@@ -238,7 +246,7 @@ static EventNameByType EVENT_NAME_BY_TYPE;
 
 struct ltstr {
   bool operator()(const char * s1, const char * s2 ) const {
-    return strcmp( s1, s2 ) < 0;
+    return string(s1).compare( s2 ) < 0;
   }
 };
 
@@ -273,6 +281,11 @@ FGLinuxInputDevice::FGLinuxInputDevice() :
 {
 }
 
+static inline bool bitSet( unsigned char * buf, unsigned bit )
+{
+  return (buf[bit/sizeof(unsigned char)/8] >> (bit%(sizeof(unsigned char)*8))) & 1;
+}
+
 void FGLinuxInputDevice::Open()
 {
   if( fd != -1 ) return;
@@ -280,9 +293,96 @@ void FGLinuxInputDevice::Open()
     throw exception();
   }
 
-  if( GetGrab() && ioctl( fd, EVIOCGRAB, 2 ) != 0 ) {
+  if( GetGrab() && ioctl( fd, EVIOCGRAB, 2 ) == -1 ) {
     SG_LOG( SG_INPUT, SG_WARN, "Can't grab " << devname << " for exclusive access" );
   }
+
+  {
+    unsigned char buf[ABS_CNT/sizeof(unsigned char)/8];
+    // get axes maximums
+    if( ioctl( fd, EVIOCGBIT(EV_ABS,ABS_MAX), buf ) == -1 ) {
+      SG_LOG( SG_INPUT, SG_WARN, "Can't get abs-axes for " << devname );
+    } else {
+      for( unsigned i = 0; i < ABS_MAX; i++ ) {
+        if( bitSet( buf, i ) ) {
+          struct input_absinfo ai;
+          if( ioctl(fd, EVIOCGABS(i), &ai) == -1 ) {
+            SG_LOG( SG_INPUT, SG_WARN, "Can't get abs-axes maximums for " << devname );
+            continue;
+          }
+          absinfo[i] = ai;
+/*
+          SG_LOG( SG_INPUT, SG_INFO, "Axis #" << i <<
+            ": value=" << ai.value << 
+            ": minimum=" << ai.minimum << 
+            ": maximum=" << ai.maximum << 
+            ": fuzz=" << ai.fuzz << 
+            ": flat=" << ai.flat << 
+            ": resolution=" << ai.resolution );
+*/
+
+          // kick an initial event
+          struct input_event event;
+          event.type = EV_ABS;
+          event.code = i;
+          event.value = ai.value;
+          FGLinuxEventData eventData( event, 0, 0 );
+          eventData.value = Normalize( event );
+          HandleEvent(eventData);
+        }
+      }
+    }
+  }
+  {
+    unsigned char mask[KEY_CNT/sizeof(unsigned char)/8];
+    unsigned char flag[KEY_CNT/sizeof(unsigned char)/8];
+    memset(mask,0,sizeof(mask));
+    memset(flag,0,sizeof(flag));
+    if( ioctl( fd, EVIOCGKEY(sizeof(flag)), flag ) == -1 ||
+        ioctl( fd, EVIOCGBIT(EV_KEY, sizeof(mask)), mask ) == -1 ) {
+      SG_LOG( SG_INPUT, SG_WARN, "Can't get keys for " << devname );
+    } else {
+      for( unsigned i = 0; i < KEY_MAX; i++ ) {
+        if( bitSet( mask, i ) ) {
+          struct input_event event;
+          event.type = EV_KEY;
+          event.code = i;
+          event.value = bitSet(flag,i);
+          FGLinuxEventData eventData( event, 0, 0 );
+          HandleEvent(eventData);
+        }
+      }
+    }
+  }
+  {
+    unsigned char buf[SW_CNT/sizeof(unsigned char)/8];
+    if( ioctl( fd, EVIOCGSW(sizeof(buf)), buf ) == -1 ) {
+      SG_LOG( SG_INPUT, SG_WARN, "Can't get switches for " << devname );
+    } else {
+      for( unsigned i = 0; i < SW_MAX; i++ ) {
+        if( bitSet( buf, i ) ) {
+          struct input_event event;
+          event.type = EV_SW;
+          event.code = i;
+          event.value = 1;
+          FGLinuxEventData eventData( event, 0, 0 );
+          HandleEvent(eventData);
+        }
+      }
+    }
+  }
+}
+
+double FGLinuxInputDevice::Normalize( struct input_event & event ) 
+{
+  if( absinfo.count(event.code) > 0 ) {
+     const struct input_absinfo & ai = absinfo[(unsigned int)event.code];
+     if( ai.maximum == ai.minimum )
+       return 0.0;
+     return ((double)event.value-(double)ai.minimum)/((double)ai.maximum-(double)ai.minimum);
+  } else {
+    return (double)event.value;
+  }
 }
 
 void FGLinuxInputDevice::Close()
@@ -437,7 +537,6 @@ void FGLinuxEventInput::AddHalDevice( const char * udi )
 void FGLinuxEventInput::update( double dt )
 {
   FGEventInput::update( dt );
-
   // index the input devices by the associated fd and prepare
   // the pollfd array by filling in the file descriptor
   struct pollfd fds[input_devices.size()];
@@ -468,9 +567,13 @@ void FGLinuxEventInput::update( double dt )
 
         FGLinuxEventData eventData( event, dt, modifiers );
 
+        if( event.type == EV_ABS )
+          eventData.value = devicesByFd[fds[i].fd]->Normalize( event );
+
         // let the FGInputDevice handle the data
         devicesByFd[fds[i].fd]->HandleEvent( eventData );
       }
     }
   }
 }
+