| // Copyright 2019 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <hid-parser/descriptor.h> |
| |
| namespace hid { |
| |
| // Gets the size of the report from the first byte of the report. |
| size_t GetReportSizeFromFirstByte(const DeviceDescriptor& desc, ReportType type, uint8_t byte) { |
| for (size_t i = 0; i < desc.rep_count; i++) { |
| const ReportDescriptor& report = desc.report[i]; |
| if ((report.report_id == byte) || (report.report_id == 0)) { |
| switch (type) { |
| case ReportType::kReportInput: |
| return report.input_byte_sz; |
| case ReportType::kReportOutput: |
| return report.output_byte_sz; |
| case ReportType::kReportFeature: |
| return report.feature_byte_sz; |
| } |
| } |
| } |
| return 0; |
| } |
| |
| } // namespace hid |
