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
14namespace device {
15
16// HID report descriptor.
17// See section 6.2.2 of HID specifications (v1.11).
18class 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