0b87d3c664
Some devices throw an hidpp20::Error InvalidFeatureIndex when Root GetFeature is called with some features (e.g. 0x1b04) as the parameter. Since Root is a required feature in the HID++ 2.0 protocol, this error can safely be ignored and treated as an UnsupportedFeature. Fixes bug in #20 where the Logitech PRO headset would not work.
73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
/*
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* Copyright 2019-2020 PixlOne
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <cassert>
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#include "EssentialFeature.h"
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#include "feature_defs.h"
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#include "features/Root.h"
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#include "Error.h"
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using namespace logid::backend::hidpp20;
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std::vector<uint8_t> EssentialFeature::callFunction(uint8_t function_id,
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std::vector<uint8_t>& params)
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{
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hidpp::Report::Type type;
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assert(params.size() <= hidpp::LongParamLength);
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if(params.size() <= hidpp::ShortParamLength)
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type = hidpp::Report::Type::Short;
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else if(params.size() <= hidpp::LongParamLength)
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type = hidpp::Report::Type::Long;
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else
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throw hidpp::Report::InvalidReportID();
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hidpp::Report request(type, _device->deviceIndex(), _index, function_id,
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LOGID_HIDPP_SOFTWARE_ID);
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std::copy(params.begin(), params.end(), request.paramBegin());
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auto response = _device->sendReport(request);
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return std::vector<uint8_t>(response.paramBegin(), response.paramEnd());
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}
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EssentialFeature::EssentialFeature(hidpp::Device* dev, uint16_t _id) :
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_device (dev)
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{
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_index = hidpp20::FeatureID::ROOT;
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if(_id)
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{
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std::vector<uint8_t> getFunc_req(2);
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getFunc_req[0] = (_id >> 8) & 0xff;
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getFunc_req[1] = _id & 0xff;
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try {
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auto getFunc_resp = this->callFunction(Root::GetFeature,
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getFunc_req);
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_index = getFunc_resp[0];
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} catch(Error& e) {
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if(e.code() == Error::InvalidFeatureIndex)
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throw UnsupportedFeature(_id);
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throw e;
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}
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// 0 if not found
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if(!_index)
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throw UnsupportedFeature(_id);
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}
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}
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