[janderwald] 55357: [HIDPARSE] - Implement HidP_GetUsagesEx - HidP_GetUsagesEx uses HidP_GetUsages with undefined usage page - Required for hid usb support - Check if there is a maximum set. In tha...

Author: janderwald
Date: Tue Jan 31 19:00:45 2012
New Revision: 55357

URL: http://svn.reactos.org/svn/reactos?rev=55357&view=rev
Log:
[HIDPARSE]
- Implement HidP_GetUsagesEx
- HidP_GetUsagesEx uses HidP_GetUsages with undefined usage page
- Required for hid usb support
- Check if there is a maximum set. In that case verify if a usage maximum has been set and apply it to the currnt usage. Fixes asserts while usb composite device installation (keyboard)

Modified:
    branches/usb-bringup-trunk/lib/drivers/hidparser/api.c
    branches/usb-bringup-trunk/lib/drivers/hidparser/parser.c

Modified: branches/usb-bringup-trunk/lib/drivers/hidparser/api.c
URL: http://svn.reactos.org/svn/reactos/branches/usb-bringup-trunk/lib/drivers/hi...
==============================================================================
--- branches/usb-bringup-trunk/lib/drivers/hidparser/api.c [iso-8859-1] (original)
+++ branches/usb-bringup-trunk/lib/drivers/hidparser/api.c [iso-8859-1] Tue Jan 31 19:00:45 2012
@@ -345,6 +345,7 @@
     PHID_REPORT_ITEM ReportItem;
     UCHAR Activated;
     ULONG Data;
+    PUSAGE_AND_PAGE UsageAndPage = NULL;

//
     // get report
@@ -366,6 +367,17 @@
         return HIDPARSER_STATUS_INVALID_REPORT_LENGTH;
     }

+    //
+    // cast to usage and page
+    //
+    if (UsagePage == HID_USAGE_PAGE_UNDEFINED)
+    {
+        //
+        // the caller requested any set usages
+        //
+        UsageAndPage = (PUSAGE_AND_PAGE)UsageList;
+    }
+
     for(Index = 0; Index < Report->ItemCount; Index++)
     {
         //
@@ -384,17 +396,20 @@
         //
         CurrentUsagePage = (ReportItem->UsageMinimum >> 16);

-        //
-        // does usage match
-        //
-        if (UsagePage != CurrentUsagePage)
-            continue;
+        if (UsagePage != HID_USAGE_PAGE_UNDEFINED)
+        {
+            //
+            // does usage match
+            //
+            if (UsagePage != CurrentUsagePage)
+                continue;
+        }

//
         // check if the specified usage is activated
         //
         ASSERT(ReportItem->ByteOffset < ReportDescriptorLength);
-        ASSERT(ReportItem->BitCount < 8);
+        ASSERT(ReportItem->BitCount <= 8);

//
         // one extra shift for skipping the prepended report id
@@ -428,10 +443,21 @@
             continue;
         }

-        //
-        // store item
-        //
-        UsageList[ItemCount] = (ReportItem->UsageMinimum & 0xFFFF);
+        if (UsagePage != HID_USAGE_PAGE_UNDEFINED)
+        {
+            //
+            // store item
+            //
+            UsageList[ItemCount] = (ReportItem->UsageMinimum & 0xFFFF);
+        }
+        else
+        {
+            //
+            // store usage and page
+            //
+            UsageAndPage[ItemCount].Usage = (ReportItem->UsageMinimum & 0xFFFF);
+            UsageAndPage[ItemCount].UsagePage = CurrentUsagePage;
+        }
         ItemCount++;
     }

@@ -443,10 +469,21 @@
         return HIDPARSER_STATUS_BUFFER_TOO_SMALL;
     }

-    //
-    // success, clear rest of array
-    //
-    Parser->Zero(&UsageList[ItemCount], (*UsageLength - ItemCount) * sizeof(USAGE));
+    if (UsagePage == HID_USAGE_PAGE_UNDEFINED)
+    {
+        //
+        // success, clear rest of array
+        //
+        Parser->Zero(&UsageAndPage[ItemCount], (*UsageLength - ItemCount) * sizeof(USAGE_AND_PAGE));
+    }
+    else
+    {
+        //
+        // success, clear rest of array
+        //
+        Parser->Zero(&UsageList[ItemCount], (*UsageLength - ItemCount) * sizeof(USAGE));
+    }
+

//
     // store result size

Modified: branches/usb-bringup-trunk/lib/drivers/hidparser/parser.c
URL: http://svn.reactos.org/svn/reactos/branches/usb-bringup-trunk/lib/drivers/hi...
==============================================================================
--- branches/usb-bringup-trunk/lib/drivers/hidparser/parser.c [iso-8859-1] (original)
+++ branches/usb-bringup-trunk/lib/drivers/hidparser/parser.c [iso-8859-1] Tue Jan 31 19:00:45 2012
@@ -535,20 +535,21 @@
             // get usage minimum from local state
             //
             UsageValue = LocalItemState->UsageMinimum;
-            ASSERT(LocalItemState->UsageMinimumSet);
-            ASSERT(LocalItemState->UsageMaximumSet);

//
             // append item index
             //
             UsageValue.u.Extended += ReportItemIndex;

-            if (UsageValue.u.Extended > LocalItemState->UsageMaximum.u.Extended)
+            if (LocalItemState->UsageMaximumSet)
             {
-                //
-                // maximum reached
-                //
-                UsageValue.u.Extended = LocalItemState->UsageMaximum.u.Extended;
+                if (UsageValue.u.Extended > LocalItemState->UsageMaximum.u.Extended)
+                {
+                    //
+                    // maximum reached
+                    //
+                    UsageValue.u.Extended = LocalItemState->UsageMaximum.u.Extended;
+                }
             }
         }