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268 lines
7.2 KiB
268 lines
7.2 KiB
/* |
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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 <utility> |
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#include "../../util/thread.h" |
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#include "Device.h" |
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#include "Report.h" |
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#include "../hidpp20/features/Root.h" |
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#include "../hidpp20/features/DeviceName.h" |
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#include "../hidpp20/Error.h" |
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#include "../hidpp10/Error.h" |
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#include "../dj/Receiver.h" |
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using namespace logid::backend; |
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using namespace logid::backend::hidpp; |
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const char* Device::InvalidDevice::what() const noexcept |
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{ |
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switch(_reason) { |
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case NoHIDPPReport: |
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return "Invalid HID++ device"; |
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case InvalidRawDevice: |
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return "Invalid raw device"; |
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case Asleep: |
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return "Device asleep"; |
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default: |
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return "Invalid device"; |
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} |
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} |
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Device::InvalidDevice::Reason Device::InvalidDevice::code() const noexcept |
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{ |
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return _reason; |
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} |
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Device::Device(const std::string& path, DeviceIndex index): |
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_raw_device (std::make_shared<raw::RawDevice>(path)), _receiver (nullptr), |
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_path (path), _index (index) |
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{ |
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_init(); |
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} |
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Device::Device(std::shared_ptr<raw::RawDevice> raw_device, DeviceIndex index) : |
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_raw_device (std::move(raw_device)), _receiver (nullptr), |
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_path (_raw_device->hidrawPath()), _index (index) |
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{ |
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_init(); |
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} |
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Device::Device(std::shared_ptr<dj::Receiver> receiver, |
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hidpp::DeviceConnectionEvent event) : |
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_raw_device (receiver->rawDevice()), _receiver (receiver), |
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_path (receiver->rawDevice()->hidrawPath()), _index (event.index) |
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{ |
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// Device will throw an error soon, just do it now |
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if(!event.linkEstablished) |
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throw InvalidDevice(InvalidDevice::Asleep); |
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if(!event.fromTimeoutCheck) |
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_pid = event.pid; |
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else |
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_pid = receiver->getPairingInfo(_index).pid; |
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_init(); |
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} |
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Device::Device(std::shared_ptr<dj::Receiver> receiver, |
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DeviceIndex index) : _raw_device (receiver->rawDevice()), |
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_receiver (receiver), _path (receiver->rawDevice()->hidrawPath()), |
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_index (index) |
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{ |
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_pid = receiver->getPairingInfo(_index).pid; |
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_init(); |
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} |
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std::string Device::devicePath() const |
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{ |
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return _path; |
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} |
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DeviceIndex Device::deviceIndex() const |
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{ |
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return _index; |
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} |
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std::tuple<uint8_t, uint8_t> Device::version() const |
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{ |
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return _version; |
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} |
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void Device::_init() |
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{ |
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_listening = false; |
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_supported_reports = getSupportedReports(_raw_device->reportDescriptor()); |
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if(!_supported_reports) |
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throw InvalidDevice(InvalidDevice::NoHIDPPReport); |
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try { |
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hidpp20::EssentialRoot root(this); |
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_version = root.getVersion(); |
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} catch(hidpp10::Error &e) { |
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// Valid HID++ 1.0 devices should send an InvalidSubID error |
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if(e.code() != hidpp10::Error::InvalidSubID) |
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throw; |
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// HID++ 2.0 is not supported, assume HID++ 1.0 |
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_version = std::make_tuple(1, 0); |
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} |
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if(!_receiver) { |
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_pid = _raw_device->productId(); |
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if(std::get<0>(_version) >= 2) { |
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try { |
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hidpp20::EssentialDeviceName deviceName(this); |
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_name = deviceName.getName(); |
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} catch(hidpp20::UnsupportedFeature &e) { |
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_name = _raw_device->name(); |
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} |
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} else { |
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_name = _raw_device->name(); |
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} |
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} else { |
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if(std::get<0>(_version) >= 2) { |
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try { |
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hidpp20::EssentialDeviceName deviceName(this); |
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_name = deviceName.getName(); |
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} catch(hidpp20::UnsupportedFeature &e) { |
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_name = _receiver->getDeviceName(_index); |
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} |
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} else { |
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_name = _receiver->getDeviceName(_index); |
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} |
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} |
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} |
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Device::~Device() |
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{ |
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if(_listening) |
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_raw_device->removeEventHandler("DEV_" + std::to_string(_index)); |
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} |
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void Device::addEventHandler(const std::string& nickname, |
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const std::shared_ptr<EventHandler>& handler) |
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{ |
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assert(_event_handlers.find(nickname) == _event_handlers.end()); |
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_event_handlers.emplace(nickname, handler); |
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} |
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void Device::removeEventHandler(const std::string& nickname) |
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{ |
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_event_handlers.erase(nickname); |
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} |
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const std::map<std::string, std::shared_ptr<EventHandler>>& |
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Device::eventHandlers() |
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{ |
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return _event_handlers; |
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} |
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void Device::handleEvent(Report& report) |
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{ |
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for(auto& handler : _event_handlers) |
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if(handler.second->condition(report)) |
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handler.second->callback(report); |
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} |
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Report Device::sendReport(Report& report) |
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{ |
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switch(report.type()) |
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{ |
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case Report::Type::Short: |
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if(!(_supported_reports & HIDPP_REPORT_SHORT_SUPPORTED)) |
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report.setType(Report::Type::Long); |
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break; |
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case Report::Type::Long: |
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/* Report can be truncated, but that isn't a good idea. */ |
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assert(_supported_reports & HIDPP_REPORT_LONG_SUPPORTED); |
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} |
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auto raw_response = _raw_device->sendReport(report.rawReport()); |
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Report response(raw_response); |
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Report::Hidpp10Error hidpp10_error{}; |
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if(response.isError10(&hidpp10_error)) |
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throw hidpp10::Error(hidpp10_error.error_code); |
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Report::Hidpp20Error hidpp20_error{}; |
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if(response.isError20(&hidpp20_error)) |
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throw hidpp20::Error(hidpp20_error.error_code); |
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return response; |
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} |
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void Device::sendReportNoResponse(Report &report) |
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{ |
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switch(report.type()) |
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{ |
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case Report::Type::Short: |
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if(!(_supported_reports & HIDPP_REPORT_SHORT_SUPPORTED)) |
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report.setType(Report::Type::Long); |
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break; |
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case Report::Type::Long: |
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/* Report can be truncated, but that isn't a good idea. */ |
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assert(_supported_reports & HIDPP_REPORT_LONG_SUPPORTED); |
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} |
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_raw_device->sendReportNoResponse(report.rawReport()); |
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} |
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std::string Device::name() const |
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{ |
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return _name; |
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} |
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uint16_t Device::pid() const |
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{ |
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return _pid; |
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} |
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void Device::listen() |
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{ |
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if(!_raw_device->isListening()) |
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_raw_device->listenAsync(); |
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// Pass all HID++ events with device index to this device. |
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auto handler = std::make_shared<raw::RawEventHandler>(); |
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handler->condition = [index=this->_index](std::vector<uint8_t>& report) |
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->bool { |
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return (report[Offset::Type] == Report::Type::Short || |
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report[Offset::Type] == Report::Type::Long) && |
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(report[Offset::DeviceIndex] == index); |
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}; |
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handler->callback = [this](std::vector<uint8_t>& report)->void { |
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Report _report(report); |
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this->handleEvent(_report); |
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}; |
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_raw_device->addEventHandler("DEV_" + std::to_string(_index), handler); |
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_listening = true; |
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} |
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void Device::stopListening() |
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{ |
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if(_listening) |
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_raw_device->removeEventHandler("DEV_" + std::to_string(_index)); |
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_listening = false; |
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if(!_raw_device->eventHandlers().empty()) |
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_raw_device->stopListener(); |
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} |