File: hid_collection_info.idl

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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Information about a HID collection, including its reports and subcollections.
// https://wicg.github.io/webhid/index.html#report-descriptor

dictionary HIDCollectionInfo {
    // The 16-bit usage page associated with this collection. Zero if not set.
    unsigned short usagePage;

    // The 16-bit usage value associated with this collection. Zero if not set.
    unsigned short usage;

    // The 8-bit collection type for this collection.
    octet type;

    // The subcollections of this collection, in the order they were encountered
    // in the report descriptor.
    sequence<HIDCollectionInfo> children;

    // Input, output, and feature reports described in this collection, sorted
    // by report ID. If this is a subcollection, only the portion of the report
    // described within this collection is included.
    sequence<HIDReportInfo> inputReports;
    sequence<HIDReportInfo> outputReports;
    sequence<HIDReportInfo> featureReports;
};