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/*
This file is part of Android File Transfer For Linux.
Copyright (C) 2015-2020 Vladimir Menshakov
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License,
or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <mtp/usb/BulkPipe.h>
#include <usb/DeviceDescriptor.h>
#include <mtp/usb/TimeoutException.h>
#include <mtp/ptp/ByteArrayObjectStream.h>
#include <mtp/log.h>
namespace mtp { namespace usb
{
BulkPipe::BulkPipe(DevicePtr device, ConfigurationPtr conf, InterfacePtr interface, EndpointPtr in, EndpointPtr out, EndpointPtr interrupt, ITokenPtr claimToken, bool clearHalt):
_device(device), _conf(conf), _interface(interface), _in(in), _out(out), _interrupt(interrupt), _claimToken(claimToken)
{
if (clearHalt)
{
try
{ device->ClearHalt(_interrupt); }
catch(const std::exception & ex)
{ error("clearing halt for in ep: ", ex.what()); }
try
{ device->ClearHalt(in); }
catch(const std::exception & ex)
{ error("clearing halt for in ep: ", ex.what()); }
try
{ device->ClearHalt(out); }
catch(const std::exception & ex)
{ error("clearing halt for in ep: ", ex.what()); }
}
}
BulkPipe::~BulkPipe()
{ }
DevicePtr BulkPipe::GetDevice() const
{ return _device; }
InterfacePtr BulkPipe::GetInterface() const
{ return _interface; }
ByteArray BulkPipe::ReadInterrupt(int timeout)
{
ByteArrayObjectOutputStreamPtr s(new ByteArrayObjectOutputStream());
try { _device->ReadBulk(_interrupt, s, timeout); } catch(const TimeoutException &ex) { return ByteArray(); }
return s->GetData();
}
void BulkPipe::SetCurrentStream(const ICancellableStreamPtr &stream)
{
scoped_mutex_lock l(_mutex);
_currentStream = stream;
}
ICancellableStreamPtr BulkPipe::GetCurrentStream()
{
scoped_mutex_lock l(_mutex);
return _currentStream;
}
class BulkPipe::CurrentStreamSetter
{
BulkPipe * _owner;
public:
CurrentStreamSetter(BulkPipe *owner, ICancellableStreamPtr stream): _owner(owner)
{ _owner->SetCurrentStream(stream); }
~CurrentStreamSetter()
{ _owner->SetCurrentStream(nullptr); }
};
void BulkPipe::Read(const IObjectOutputStreamPtr &outputStream, int timeout)
{
CurrentStreamSetter s(this, std::dynamic_pointer_cast<ICancellableStream>(outputStream));
_device->ReadBulk(_in, outputStream, timeout);
}
void BulkPipe::Write(const IObjectInputStreamPtr &inputStream, int timeout)
{
CurrentStreamSetter s(this, std::dynamic_pointer_cast<ICancellableStream>(inputStream));
_device->WriteBulk(_out, inputStream, timeout);
}
void BulkPipe::Cancel()
{
ICancellableStreamPtr stream = GetCurrentStream();
print("cancelling stream ", stream.get());
if (stream)
stream->Cancel();
}
BulkPipePtr BulkPipe::Create(const usb::DevicePtr & device, const ConfigurationPtr & conf, const usb::InterfacePtr & interface, ITokenPtr claimToken)
{
int epn = interface->GetEndpointsCount();
usb::EndpointPtr out, in, interrupt;
//debug("endpoints: ", epn);
for(int i = 0; i < epn; ++i)
{
usb::EndpointPtr ep = interface->GetEndpoint(i);
//debug("endpoint: %d: %02x", i, ep->GetAddress());
//check for bulk here
if (ep->GetDirection() == usb::EndpointDirection::Out)
{
if (ep->GetType() == usb::EndpointType::Bulk)
{
//debug("OUT");
out = ep;
}
}
else
{
if (ep->GetType() == usb::EndpointType::Bulk)
{
//debug("IN");
in = ep;
}
else
{
//debug("INTERRUPT");
interrupt = ep;
}
}
}
if (!in || !out || !interrupt)
throw std::runtime_error("invalid endpoint");
return std::make_shared<BulkPipe>(device, conf, interface, in, out, interrupt, claimToken);
}
}}
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