dlls/hid/hidp.c

   1 /*
   2  * Human Input Devices
   3  *
   4  * Copyright (C) 2015 Aric Stewart
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdarg.h>
  24
  25 #define NONAMELESSUNION
  26 #define WIN32_NO_STATUS
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "winternl.h"
  30 #include "winioctl.h"
  31 #include "ddk/wdm.h"
  32
  33 #include "hidusage.h"
  34 #include "ddk/hidpi.h"
  35 #include "parse.h"
  36 #include "wine/debug.h"
  37
  38 WINE_DEFAULT_DEBUG_CHANNEL(hidp);
  39
  40 NTSTATUS WINAPI HidP_GetButtonCaps(HIDP_REPORT_TYPE ReportType, PHIDP_BUTTON_CAPS ButtonCaps,
  41                                    PUSHORT ButtonCapsLength, PHIDP_PREPARSED_DATA PreparsedData)
  42 {
  43     PWINE_HIDP_PREPARSED_DATA data = (PWINE_HIDP_PREPARSED_DATA)PreparsedData;
  44     WINE_HID_REPORT *report = NULL;
  45     USHORT b_count = 0, r_count = 0;
  46     int i,j,u;
  47
  48     TRACE("(%i, %p, %p, %p)\n",ReportType, ButtonCaps, ButtonCapsLength, PreparsedData);
  49
  50     if (data->magic != HID_MAGIC)
  51         return HIDP_STATUS_INVALID_PREPARSED_DATA;
  52
  53     switch(ReportType)
  54     {
  55         case HidP_Input:
  56             b_count = data->caps.NumberInputButtonCaps;
  57             r_count = data->dwInputReportCount;
  58             report = HID_INPUT_REPORTS(data);
  59             break;
  60         case HidP_Output:
  61             b_count = data->caps.NumberOutputButtonCaps;
  62             r_count = data->dwOutputReportCount;
  63             report = HID_OUTPUT_REPORTS(data);
  64             break;
  65         case HidP_Feature:
  66             b_count = data->caps.NumberFeatureButtonCaps;
  67             r_count = data->dwFeatureReportCount;
  68             report = HID_FEATURE_REPORTS(data);
  69             break;
  70         default:
  71             return HIDP_STATUS_INVALID_REPORT_TYPE;
  72     }
  73
  74     if (!r_count || !b_count || !report)
  75     {
  76         *ButtonCapsLength = 0;
  77         return HIDP_STATUS_SUCCESS;
  78     }
  79
  80     b_count = min(b_count, *ButtonCapsLength);
  81
  82     u = 0;
  83     for (j = 0; j < r_count && u < b_count; j++)
  84     {
  85         for (i = 0; i < report->elementCount && u < b_count; i++)
  86         {
  87             if (report->Elements[i].ElementType == ButtonElement)
  88                 ButtonCaps[u++] = report->Elements[i].caps.button;
  89         }
  90         report = HID_NEXT_REPORT(data, report);
  91     }
  92
  93     *ButtonCapsLength = b_count;
  94     return HIDP_STATUS_SUCCESS;
  95 }
  96
  97
  98 NTSTATUS WINAPI HidP_GetCaps(PHIDP_PREPARSED_DATA PreparsedData,
  99     PHIDP_CAPS Capabilities)
 100 {
 101     PWINE_HIDP_PREPARSED_DATA data = (PWINE_HIDP_PREPARSED_DATA)PreparsedData;
 102
 103     TRACE("(%p, %p)\n",PreparsedData, Capabilities);
 104
 105     if (data->magic != HID_MAGIC)
 106         return HIDP_STATUS_INVALID_PREPARSED_DATA;
 107
 108     *Capabilities = data->caps;
 109
 110     return HIDP_STATUS_SUCCESS;
 111 }