device/hid/hid_report_descriptor.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef DEVICE_HID_HID_REPORT_DESCRIPTOR_H_
   6 #define DEVICE_HID_HID_REPORT_DESCRIPTOR_H_
   7
   8 #include <vector>
   9
  10 #include "base/memory/linked_ptr.h"
  11 #include "device/hid/hid_report_descriptor_item.h"
  12 #include "device/hid/hid_usage_and_page.h"
  13
  14 namespace device {
  15
  16 // HID report descriptor.
  17 // See section 6.2.2 of HID specifications (v1.11).
  18 class HidReportDescriptor {
  19
  20  public:
  21   HidReportDescriptor(const uint8_t* bytes, size_t size);
  22   ~HidReportDescriptor();
  23
  24   const std::vector<linked_ptr<HidReportDescriptorItem> >& items() const {
  25     return items_;
  26   }
  27
  28   // Returns HID usages of top-level collections present in the descriptor.
  29   void GetTopLevelCollections(
  30       std::vector<HidUsageAndPage>* topLevelCollections);
  31
  32  private:
  33   std::vector<linked_ptr<HidReportDescriptorItem> > items_;
  34 };
  35
  36 }  // namespace device
  37
  38 #endif  // DEVICE_HID_HID_REPORT_DESCRIPTOR_H_