mirror of https://github.com/opencardev/aasdk
156 lines
4.9 KiB
C++
156 lines
4.9 KiB
C++
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/*
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* This file is part of aasdk library project.
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* Copyright (C) 2018 f1x.studio (Michal Szwaj)
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*
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* aasdk 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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* aasdk 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 aasdk. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <f1x/aasdk/Transport/USBTransport.hpp>
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namespace f1x
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{
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namespace aasdk
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{
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namespace transport
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{
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USBTransport::USBTransport(boost::asio::io_service& ioService, usb::IAOAPDevice::Pointer aoapDevice)
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: aoapDevice_(std::move(aoapDevice))
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, receiveStrand_(ioService)
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, sendStrand_(ioService)
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{}
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void USBTransport::receive(size_t size, ReceivePromise::Pointer promise)
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{
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receiveStrand_.dispatch([this, self = this->shared_from_this(), size, promise = std::move(promise)]() mutable {
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receiveQueue_.emplace_back(std::make_pair(size, std::move(promise)));
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if(receiveQueue_.size() == 1)
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{
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try
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{
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this->distributeReceivedData();
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}
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catch(const error::Error& e)
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{
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this->rejectReceivePromises(e);
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}
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}
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});
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}
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void USBTransport::receiveHandler(size_t bytesTransferred)
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{
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try
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{
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usbReceivedDataSink_.commit(bytesTransferred);
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this->distributeReceivedData();
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}
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catch(const error::Error& e)
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{
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this->rejectReceivePromises(e);
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}
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}
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void USBTransport::distributeReceivedData()
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{
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for(auto queueElement = receiveQueue_.begin(); queueElement != receiveQueue_.end();)
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{
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if(usbReceivedDataSink_.getAvailableSize() < queueElement->first)
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{
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auto buffer = usbReceivedDataSink_.fill();
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auto usbEndpointPromise = usb::IUSBEndpoint::Promise::defer(receiveStrand_);
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usbEndpointPromise->then(std::bind(&USBTransport::receiveHandler, this->shared_from_this(), std::placeholders::_1),
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std::bind(&USBTransport::rejectReceivePromises, this->shared_from_this(), std::placeholders::_1));
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aoapDevice_->getInEndpoint().bulkTransfer(buffer, cReceiveTimeoutMs, std::move(usbEndpointPromise));
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break;
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}
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else
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{
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auto data(usbReceivedDataSink_.consume(queueElement->first));
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queueElement->second->resolve(std::move(data));
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queueElement = receiveQueue_.erase(queueElement);
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}
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}
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}
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void USBTransport::rejectReceivePromises(const error::Error& e)
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{
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for(auto& queueElement : receiveQueue_)
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{
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queueElement.second->reject(e);
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}
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receiveQueue_.clear();
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}
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void USBTransport::send(common::Data data, SendPromise::Pointer promise)
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{
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sendStrand_.dispatch([this, self = this->shared_from_this(), data = std::move(data), promise = std::move(promise)]() mutable {
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sendQueue_.emplace_back(std::make_pair(std::move(data), std::move(promise)));
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if(sendQueue_.size() == 1)
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{
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this->doSend(sendQueue_.begin(), 0);
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}
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});
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}
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void USBTransport::doSend(OutTransferQueue::iterator queueElementIter, common::Data::size_type offset)
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{
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auto usbEndpointPromise = usb::IUSBEndpoint::Promise::defer(sendStrand_);
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usbEndpointPromise->then([this, self = this->shared_from_this(), queueElementIter, offset](size_t bytesTransferred) mutable {
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this->sendHandler(queueElementIter, offset, bytesTransferred);
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},
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[this, self = this->shared_from_this(), queueElementIter](const error::Error& e) mutable {
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queueElementIter->second->reject(e);
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sendQueue_.erase(queueElementIter);
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if(!sendQueue_.empty())
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{
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this->doSend(sendQueue_.begin(), 0);
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}
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});
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aoapDevice_->getOutEndpoint().bulkTransfer(common::DataBuffer(queueElementIter->first, offset), cSendTimeoutMs, std::move(usbEndpointPromise));
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}
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void USBTransport::sendHandler(OutTransferQueue::iterator queueElementIter, common::Data::size_type offset, size_t bytesTransferred)
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{
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if(offset + bytesTransferred < queueElementIter->first.size())
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{
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this->doSend(queueElementIter, offset + bytesTransferred);
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}
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else
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{
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queueElementIter->second->resolve();
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sendQueue_.erase(queueElementIter);
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if(!sendQueue_.empty())
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{
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this->doSend(sendQueue_.begin(), 0);
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}
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}
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}
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void USBTransport::stop()
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{
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aoapDevice_->getInEndpoint().cancelTransfers();
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aoapDevice_->getOutEndpoint().cancelTransfers();
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}
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}
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}
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}
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