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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:
HidWrapper(USBCompositeSerial* _serial = nullptr) : _serial(_serial) {}
void begin() {
if(_init)
return;
_init = true;
_report_descriptor_length = 0;
for(uint8 i = 0; i<_count; ++i) {
_report_descriptor_length += _descriptors_size[i];
}
_report_descriptor = new uint8[_report_descriptor_length];
uint16_t index = 0;
for(uint8 i = 0; i<_count; ++i) {
memcpy(_report_descriptor + index, _report_descriptors[i], _descriptors_size[i]);
index += _descriptors_size[i];
}
if(_serial) {
usbHid.begin(*_serial, _report_descriptor, _report_descriptor_length);
} else {
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;
}
USBCompositeSerial* serial() {
return _serial;
}
USBHID usbHid;
private:
USBCompositeSerial* _serial;
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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