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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef DEVICE_USB_USB_DEVICE_IMPL_H_
#define DEVICE_USB_USB_DEVICE_IMPL_H_
#include <vector>
#include "base/basictypes.h"
#include "base/callback.h"
#include "base/threading/thread_checker.h"
#include "device/usb/usb_descriptors.h"
#include "device/usb/usb_device.h"
struct libusb_device;
struct libusb_config_descriptor;
namespace base {
class SingleThreadTaskRunner;
}
namespace device {
class UsbDeviceHandleImpl;
class UsbContext;
typedef libusb_device* PlatformUsbDevice;
typedef libusb_config_descriptor* PlatformUsbConfigDescriptor;
class UsbDeviceImpl : public UsbDevice {
public:
// UsbDevice implementation:
#if defined(OS_CHROMEOS)
virtual void RequestUsbAccess(
int interface_id,
const base::Callback<void(bool success)>& callback) OVERRIDE;
#endif // OS_CHROMEOS
virtual scoped_refptr<UsbDeviceHandle> Open() OVERRIDE;
virtual bool Close(scoped_refptr<UsbDeviceHandle> handle) OVERRIDE;
virtual const UsbConfigDescriptor& GetConfiguration() OVERRIDE;
virtual bool GetManufacturer(base::string16* manufacturer) OVERRIDE;
virtual bool GetProduct(base::string16* product) OVERRIDE;
virtual bool GetSerialNumber(base::string16* serial_number) OVERRIDE;
protected:
friend class UsbServiceImpl;
// Called by UsbServiceImpl only;
UsbDeviceImpl(scoped_refptr<UsbContext> context,
scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner,
PlatformUsbDevice platform_device,
uint16 vendor_id,
uint16 product_id,
uint32 unique_id);
virtual ~UsbDeviceImpl();
// Called only be UsbService.
void OnDisconnect();
private:
base::ThreadChecker thread_checker_;
PlatformUsbDevice platform_device_;
#if defined(USE_UDEV)
// On Linux these properties are read from sysfs when the device is enumerated
// to avoid hitting the permission broker on Chrome OS for a real string
// descriptor request.
std::string manufacturer_;
std::string product_;
std::string serial_number_;
#endif
// The active configuration descriptor is not read immediately but cached for
// later use.
bool current_configuration_cached_;
UsbConfigDescriptor current_configuration_;
// Retain the context so that it will not be released before UsbDevice.
scoped_refptr<UsbContext> context_;
// Opened handles.
typedef std::vector<scoped_refptr<UsbDeviceHandleImpl> > HandlesVector;
HandlesVector handles_;
// Reference to the UI thread for permission-broker calls.
scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner_;
DISALLOW_COPY_AND_ASSIGN(UsbDeviceImpl);
};
} // namespace device
#endif // DEVICE_USB_USB_DEVICE_IMPL_H_
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