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      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 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 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                   uint16_t* max_input_report_size,
     33                   uint16_t* max_output_report_size,
     34                   uint16_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_
     43