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/*****************************************************************************
# #
# KVMD - The main PiKVM daemon. #
# #
# Copyright (C) 2018-2022 Maxim Devaev <[email protected]> #
# #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program. If not, see <https://www.gnu.org/licenses/>. #
# #
*****************************************************************************/
#pragma once
#include <USBComposite.h>
namespace DRIVERS {
class HidWrapper {
public:
void begin() {
if (_init) {
return;
}
_init = true;
_report_descriptor_length = 0;
for (unsigned index = 0; index < _count; ++index) {
_report_descriptor_length += _descriptors_size[index];
}
_report_descriptor = new uint8[_report_descriptor_length];
size_t offset = 0;
for (unsigned index = 0; index < _count; ++index) {
memcpy(_report_descriptor + offset, _report_descriptors[index], _descriptors_size[index]);
offset += _descriptors_size[index];
}
usbHid.begin(_report_descriptor, _report_descriptor_length);
}
void addReportDescriptor(const uint8_t *report_descriptor, uint16_t report_descriptor_length) {
_report_descriptors[_count] = report_descriptor;
_descriptors_size[_count] = report_descriptor_length;
++_count;
}
USBHID usbHid;
private:
bool _init = false;
static constexpr uint8_t MAX_USB_DESCRIPTORS = 2;
const uint8_t *_report_descriptors[MAX_USB_DESCRIPTORS];
uint8_t _descriptors_size[MAX_USB_DESCRIPTORS];
uint8_t _count = 0;
uint8_t *_report_descriptor;
uint16_t _report_descriptor_length;
};
}
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