aasdk/src/USB/USBHub.cpp

143 lines
4.5 KiB
C++

/*
* This file is part of aasdk library project.
* Copyright (C) 2018 f1x.studio (Michal Szwaj)
*
* aasdk 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.
* aasdk 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 aasdk. If not, see <http://www.gnu.org/licenses/>.
*/
#include <thread>
#include <aasdk/USB/IUSBWrapper.hpp>
#include <aasdk/USB/USBHub.hpp>
#include <aasdk/USB/AccessoryModeQueryChain.hpp>
#include <aasdk/Error/Error.hpp>
namespace aasdk
{
namespace usb
{
USBHub::USBHub(IUSBWrapper& usbWrapper, boost::asio::io_service& ioService, IAccessoryModeQueryChainFactory& queryChainFactory)
: usbWrapper_(usbWrapper)
, strand_(ioService)
, queryChainFactory_(queryChainFactory)
{
}
void USBHub::start(Promise::Pointer promise)
{
strand_.dispatch([this, self = this->shared_from_this(), promise = std::move(promise)]() {
if(hotplugPromise_ != nullptr)
{
hotplugPromise_->reject(error::Error(error::ErrorCode::OPERATION_ABORTED));
hotplugPromise_.reset();
}
hotplugPromise_ = std::move(promise);
if(self_ == nullptr)
{
self_ = this->shared_from_this();
hotplugHandle_ = usbWrapper_.hotplugRegisterCallback(LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED, LIBUSB_HOTPLUG_ENUMERATE, LIBUSB_HOTPLUG_MATCH_ANY, LIBUSB_HOTPLUG_MATCH_ANY,
LIBUSB_HOTPLUG_MATCH_ANY, reinterpret_cast<libusb_hotplug_callback_fn>(&USBHub::hotplugEventsHandler), reinterpret_cast<void*>(this));
}
});
}
void USBHub::cancel()
{
strand_.dispatch([this, self = this->shared_from_this()]() mutable {
if(hotplugPromise_ != nullptr)
{
hotplugPromise_->reject(error::Error(error::ErrorCode::OPERATION_ABORTED));
hotplugPromise_.reset();
}
std::for_each(queryChainQueue_.begin(), queryChainQueue_.end(), std::bind(&IAccessoryModeQueryChain::cancel, std::placeholders::_1));
if(self_ != nullptr)
{
hotplugHandle_.reset();
self_.reset();
}
});
}
int USBHub::hotplugEventsHandler(libusb_context* usbContext, libusb_device* device, libusb_hotplug_event event, void* userData)
{
if(event == LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED)
{
auto self = reinterpret_cast<USBHub*>(userData)->shared_from_this();
self->strand_.dispatch(std::bind(&USBHub::handleDevice, self, device));
}
return 0;
}
bool USBHub::isAOAPDevice(const libusb_device_descriptor& deviceDescriptor) const
{
return deviceDescriptor.idVendor == cGoogleVendorId &&
(deviceDescriptor.idProduct == cAOAPId || deviceDescriptor.idProduct == cAOAPWithAdbId);
}
void USBHub::handleDevice(libusb_device* device)
{
if(hotplugPromise_ == nullptr)
{
return;
}
libusb_device_descriptor deviceDescriptor;
if(usbWrapper_.getDeviceDescriptor(device, deviceDescriptor) != 0)
{
return;
}
DeviceHandle handle;
auto openResult = usbWrapper_.open(device, handle);
if(openResult != 0)
{
return;
}
if(this->isAOAPDevice(deviceDescriptor))
{
hotplugPromise_->resolve(std::move(handle));
hotplugPromise_.reset();
}
else
{
////////// Workaround for VMware
std::this_thread::sleep_for(std::chrono::milliseconds(1000));
//////////
queryChainQueue_.emplace_back(queryChainFactory_.create());
auto queueElementIter = std::prev(queryChainQueue_.end());
auto queryChainPromise = IAccessoryModeQueryChain::Promise::defer(strand_);
queryChainPromise->then([this, self = this->shared_from_this(), queueElementIter](DeviceHandle handle) mutable {
queryChainQueue_.erase(queueElementIter);
},
[this, self = this->shared_from_this(), queueElementIter](const error::Error& e) mutable {
queryChainQueue_.erase(queueElementIter);
});
queryChainQueue_.back()->start(std::move(handle), std::move(queryChainPromise));
}
}
}
}