From 6bf21e1a5443b98860d0acd2e134dae0f13f0f1e Mon Sep 17 00:00:00 2001
From: Aric Stewart <aric@codeweavers.com>
Date: Fri, 27 Jan 2017 07:17:53 -0600
Subject: [PATCH] hid: Implement HidP_MaxDataListLength.

Signed-off-by: Aric Stewart <aric@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
---
 dlls/hid/hid.spec   |  2 +-
 dlls/hid/hidp.c     | 20 ++++++++++++++++++++
 include/ddk/hidpi.h |  1 +
 3 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/dlls/hid/hid.spec b/dlls/hid/hid.spec
index 205b6265e9c..fe8002efa50 100644
--- a/dlls/hid/hid.spec
+++ b/dlls/hid/hid.spec
@@ -32,7 +32,7 @@
 @ stdcall HidP_GetUsagesEx(long long ptr ptr ptr ptr long)
 @ stdcall HidP_GetValueCaps(long ptr ptr ptr)
 @ stdcall HidP_InitializeReportForID(long long ptr ptr long)
-@ stub HidP_MaxDataListLength
+@ stdcall HidP_MaxDataListLength(long ptr)
 @ stdcall HidP_MaxUsageListLength(long long ptr)
 @ stub HidP_SetData
 @ stub HidP_SetScaledUsageValue
diff --git a/dlls/hid/hidp.c b/dlls/hid/hidp.c
index d031b67da40..da57665ad80 100644
--- a/dlls/hid/hidp.c
+++ b/dlls/hid/hidp.c
@@ -763,3 +763,23 @@ NTSTATUS WINAPI HidP_GetUsagesEx(HIDP_REPORT_TYPE ReportType, USHORT LinkCollect
 
     return rc;
 }
+
+ULONG WINAPI HidP_MaxDataListLength(HIDP_REPORT_TYPE ReportType, PHIDP_PREPARSED_DATA PreparsedData)
+{
+    WINE_HIDP_PREPARSED_DATA *data = (WINE_HIDP_PREPARSED_DATA *)PreparsedData;
+    TRACE("(%i, %p)\n", ReportType, PreparsedData);
+    if (data->magic != HID_MAGIC)
+        return 0;
+
+    switch(ReportType)
+    {
+        case HidP_Input:
+            return data->caps.NumberInputDataIndices;
+        case HidP_Output:
+            return data->caps.NumberOutputDataIndices;
+        case HidP_Feature:
+            return data->caps.NumberFeatureDataIndices;
+        default:
+            return 0;
+    }
+}
diff --git a/include/ddk/hidpi.h b/include/ddk/hidpi.h
index 2b0eebdd76b..902fa79bc8a 100644
--- a/include/ddk/hidpi.h
+++ b/include/ddk/hidpi.h
@@ -181,6 +181,7 @@ NTSTATUS WINAPI HidP_TranslateUsagesToI8042ScanCodes(USAGE *ChangedUsageList, UL
 NTSTATUS WINAPI HidP_GetSpecificButtonCaps(HIDP_REPORT_TYPE ReportType, USAGE UsagePage, USHORT LinkCollection, USAGE Usage, HIDP_BUTTON_CAPS *ButtonCaps, USHORT *ButtonCapsLength, PHIDP_PREPARSED_DATA PreparsedData);
 NTSTATUS WINAPI HidP_GetSpecificValueCaps(HIDP_REPORT_TYPE ReportType, USAGE UsagePage, USHORT LinkCollection, USAGE Usage, HIDP_VALUE_CAPS *ValueCaps, USHORT *ValueCapsLength, PHIDP_PREPARSED_DATA PreparsedData);
 NTSTATUS WINAPI HidP_GetUsagesEx(HIDP_REPORT_TYPE ReportType, USHORT LinkCollection, USAGE_AND_PAGE *ButtonList, ULONG *UsageLength, PHIDP_PREPARSED_DATA PreparsedData, CHAR *Report, ULONG ReportLength);
+ULONG WINAPI HidP_MaxDataListLength(HIDP_REPORT_TYPE ReportType, PHIDP_PREPARSED_DATA PreparsedData);
 
 #ifndef FACILITY_HID_ERROR_CODE
 #define FACILITY_HID_ERROR_CODE 0x11