hid: Implement HidP_GetButtonCaps.

dlls/hid/hid.spec

@@ -18,7 +18,7 @@
 @ stdcall HidD_SetFeature(long ptr long)
 @ stub HidD_SetNumInputBuffers
 @ stub HidD_SetOutputReport
-@ stub HidP_GetButtonCaps
+@ stdcall HidP_GetButtonCaps(long ptr ptr ptr)
 @ stdcall HidP_GetCaps(ptr ptr)
 @ stub HidP_GetData
 @ stub HidP_GetExtendedAttributes

dlls/hid/hidp.c

@@ -37,6 +37,64 @@
 
 WINE_DEFAULT_DEBUG_CHANNEL(hidp);
 
+NTSTATUS WINAPI HidP_GetButtonCaps(HIDP_REPORT_TYPE ReportType, PHIDP_BUTTON_CAPS ButtonCaps,
+                                   PUSHORT ButtonCapsLength, PHIDP_PREPARSED_DATA PreparsedData)
+{
+    PWINE_HIDP_PREPARSED_DATA data = (PWINE_HIDP_PREPARSED_DATA)PreparsedData;
+    WINE_HID_REPORT *report = NULL;
+    USHORT b_count = 0, r_count = 0;
+    int i,j,u;
+
+    TRACE("(%i, %p, %p, %p)\n",ReportType, ButtonCaps, ButtonCapsLength, PreparsedData);
+
+    if (data->magic != HID_MAGIC)
+        return HIDP_STATUS_INVALID_PREPARSED_DATA;
+
+    switch(ReportType)
+    {
+        case HidP_Input:
+            b_count = data->caps.NumberInputButtonCaps;
+            r_count = data->dwInputReportCount;
+            report = HID_INPUT_REPORTS(data);
+            break;
+        case HidP_Output:
+            b_count = data->caps.NumberOutputButtonCaps;
+            r_count = data->dwOutputReportCount;
+            report = HID_OUTPUT_REPORTS(data);
+            break;
+        case HidP_Feature:
+            b_count = data->caps.NumberFeatureButtonCaps;
+            r_count = data->dwFeatureReportCount;
+            report = HID_FEATURE_REPORTS(data);
+            break;
+        default:
+            return HIDP_STATUS_INVALID_REPORT_TYPE;
+    }
+
+    if (!r_count || !b_count || !report)
+    {
+        *ButtonCapsLength = 0;
+        return HIDP_STATUS_SUCCESS;
+    }
+
+    b_count = min(b_count, *ButtonCapsLength);
+
+    u = 0;
+    for (j = 0; j < r_count && u < b_count; j++)
+    {
+        for (i = 0; i < report->elementCount && u < b_count; i++)
+        {
+            if (report->Elements[i].ElementType == ButtonElement)
+                ButtonCaps[u++] = report->Elements[i].caps.button;
+        }
+        report = HID_NEXT_REPORT(data, report);
+    }
+
+    *ButtonCapsLength = b_count;
+    return HIDP_STATUS_SUCCESS;
+}
+
+
 NTSTATUS WINAPI HidP_GetCaps(PHIDP_PREPARSED_DATA PreparsedData,
     PHIDP_CAPS Capabilities)
 {

include/ddk/hidpi.h

@@ -136,6 +136,7 @@ typedef struct _HIDP_CAPS
     USHORT  NumberFeatureDataIndices;
 } HIDP_CAPS, *PHIDP_CAPS;
 
+NTSTATUS WINAPI HidP_GetButtonCaps(HIDP_REPORT_TYPE ReportType, PHIDP_BUTTON_CAPS ButtonCaps, PUSHORT  ButtonCapsLength, PHIDP_PREPARSED_DATA PreparsedData);
 NTSTATUS WINAPI HidP_GetCaps(PHIDP_PREPARSED_DATA PreparsedData, PHIDP_CAPS Capabilities);
 
 #ifndef FACILITY_HID_ERROR_CODE