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/*
* \file usb_handler.h
* \brief libusb USB handler class header file.
*
* Copyright (c) 2013, Ford Motor Company
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following
* disclaimer in the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of the Ford Motor Company nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SRC_COMPONENTS_TRANSPORT_MANAGER_INCLUDE_TRANSPORT_MANAGER_USB_LIBUSB_USB_HANDLER_H_
#define SRC_COMPONENTS_TRANSPORT_MANAGER_INCLUDE_TRANSPORT_MANAGER_USB_LIBUSB_USB_HANDLER_H_
#include <libusb-1.0/libusb.h>
#include "transport_manager/transport_adapter/transport_adapter.h"
#include "transport_manager/usb/libusb/platform_usb_device.h"
#include "transport_manager/usb/usb_control_transfer.h"
#include "utils/threads/thread.h"
class Thread;
namespace transport_manager {
namespace transport_adapter {
class UsbHandler {
public:
UsbHandler();
~UsbHandler();
void StartControlTransferSequence(UsbControlTransferSequence* sequence,
PlatformUsbDevice* device);
TransportAdapter::Error Init();
public:
void CloseDeviceHandle(libusb_device_handle* device_handle);
private:
class ControlTransferSequenceState;
void Thread();
void DeviceArrived(libusb_device* device);
void DeviceLeft(libusb_device* device);
void ControlTransferCallback(libusb_transfer* transfer);
void SubmitControlTransfer(ControlTransferSequenceState* sequence_state);
friend void UsbTransferSequenceCallback(libusb_transfer* transfer);
private:
class UsbHandlerDelegate : public threads::ThreadDelegate {
public:
explicit UsbHandlerDelegate(UsbHandler* handler);
void threadMain() OVERRIDE;
void exitThreadMain() OVERRIDE;
private:
UsbHandler* handler_;
};
bool shutdown_requested_;
threads::Thread* thread_;
friend class UsbDeviceListener;
std::list<class UsbDeviceListener*> usb_device_listeners_;
typedef std::vector<PlatformUsbDevice*> Devices;
Devices devices_;
typedef std::list<ControlTransferSequenceState*> TransferSequences;
TransferSequences transfer_sequences_;
std::list<libusb_device_handle*> device_handles_to_close_;
libusb_context* libusb_context_;
libusb_hotplug_callback_handle arrived_callback_handle_;
libusb_hotplug_callback_handle left_callback_handle_;
friend void* UsbHandlerThread(void* data);
friend int ArrivedCallback(libusb_context* context,
libusb_device* device,
libusb_hotplug_event event,
void* data);
friend int LeftCallback(libusb_context* context,
libusb_device* device,
libusb_hotplug_event event,
void* data);
};
} // namespace transport_adapter
} // namespace transport_manager
#endif // SRC_COMPONENTS_TRANSPORT_MANAGER_INCLUDE_TRANSPORT_MANAGER_USB_LIBUSB_USB_HANDLER_H_
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