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_collection_info.h"
  12 #include "device/hid/hid_report_descriptor_item.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 std::vector<uint8>& bytes);
  22   ~HidReportDescriptor();
  23
  24   const std::vector<linked_ptr<HidReportDescriptorItem> >& items() const {
  25     return items_;
  26   }
  27
  28   // Returns top-level collections present in the descriptor,
  29   // together with max report sizes
  30   void GetDetails(std::vector<HidCollectionInfo>* top_level_collections,
  31                   bool* has_report_id,
  32                   size_t* max_input_report_size,
  33                   size_t* max_output_report_size,
  34                   size_t* max_feature_report_size);
  35
  36  private:
  37   std::vector<linked_ptr<HidReportDescriptorItem> > items_;
  38 };
  39
  40 }  // namespace device
  41
  42 #endif  // DEVICE_HID_HID_REPORT_DESCRIPTOR_H_