src/add-ons/kernel/drivers/input/usb_hid/HIDParser.h

   1 /*
   2  * Copyright 2009, Michael Lotz, mmlr@mlotz.ch.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef HID_PARSER_H
   6 #define HID_PARSER_H
   7
   8 #include "HIDDataTypes.h"
   9
  10 class HIDCollection;
  11 class HIDDevice;
  12 class HIDReport;
  13
  14 class HIDParser {
  15 public:
  16                                                                 HIDParser(HIDDevice *device);
  17                                                                 ~HIDParser();
  18
  19                 HIDDevice *                             Device() { return fDevice; };
  20
  21                 status_t                                ParseReportDescriptor(
  22                                                                         const uint8 *reportDescriptor,
  23                                                                         size_t descriptorLength);
  24
  25                 bool                                    UsesReportIDs() { return fUsesReportIDs; };
  26
  27                 HIDReport *                             FindReport(uint8 type, uint8 id);
  28                 uint8                                   CountReports(uint8 type);
  29                 HIDReport *                             ReportAt(uint8 type, uint8 index);
  30                 size_t                                  MaxReportSize();
  31
  32                 HIDCollection *                 RootCollection() { return fRootCollection; };
  33
  34                 void                                    SetReport(status_t status, uint8 *report,
  35                                                                         size_t length);
  36
  37                 void                                    PrintToStream();
  38
  39 private:
  40                 HIDReport *                             _FindOrCreateReport(uint8 type, uint8 id);
  41                 float                                   _CalculateResolution(global_item_state *state);
  42                 void                                    _Reset();
  43
  44                 HIDDevice *                             fDevice;
  45                 bool                                    fUsesReportIDs;
  46                 uint8                                   fReportCount;
  47                 HIDReport **                    fReports;
  48                 HIDCollection *                 fRootCollection;
  49 };
  50
  51 #endif // HID_PARSER_H