/* $Id: USBProxyService.h 59117 2015-12-14 14:04:37Z vboxsync $ */
/** @file
 * VirtualBox USB Proxy Service (base) class.
 */

/*
 * Copyright (C) 2005-2012 Oracle Corporation
 *
 * This file is part of VirtualBox Open Source Edition (OSE), as
 * available from http://www.virtualbox.org. This file is free software;
 * you can redistribute it and/or modify it under the terms of the GNU
 * General Public License (GPL) as published by the Free Software
 * Foundation, in version 2 as it comes in the "COPYING" file of the
 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
 */


#ifndef ____H_USBPROXYSERVICE
#define ____H_USBPROXYSERVICE

#include <VBox/usb.h>
#include <VBox/usbfilter.h>

#include "VirtualBoxBase.h"
#include "VirtualBoxImpl.h"
#include "HostUSBDeviceImpl.h"
#include "USBProxyBackend.h"
class Host;

/**
 * Base class for the USB Proxy service.
 */
class USBProxyService
    : public VirtualBoxTranslatable
{
public:
    USBProxyService(Host *aHost);
    virtual HRESULT init(void);
    virtual ~USBProxyService();

    /**
     * Override of the default locking class to be used for validating lock
     * order with the standard member lock handle.
     */
    virtual VBoxLockingClass getLockingClass() const
    {
        // the USB proxy service uses the Host object lock, so return the
        // same locking class as the host
        return LOCKCLASS_HOSTOBJECT;
    }

    bool isActive(void);
    int getLastError(void);

    RWLockHandle *lockHandle() const;

    /** @name Interface for the USBController and the Host object.
     * @{ */
    void *insertFilter(PCUSBFILTER aFilter);
    void removeFilter(void *aId);
    /** @} */

    /** @name Host Interfaces
     * @{ */
    HRESULT getDeviceCollection(std::vector<ComPtr<IHostUSBDevice> > &aUSBDevices);
    /** @} */

    /** @name SessionMachine Interfaces
     * @{ */
    HRESULT captureDeviceForVM(SessionMachine *aMachine, IN_GUID aId, const com::Utf8Str &aCaptureFilename);
    HRESULT detachDeviceFromVM(SessionMachine *aMachine, IN_GUID aId, bool aDone);
    HRESULT autoCaptureDevicesForVM(SessionMachine *aMachine);
    HRESULT detachAllDevicesFromVM(SessionMachine *aMachine, bool aDone, bool aAbnormal);
    /** @} */

    typedef std::list< ComObjPtr<HostUSBDeviceFilter> > USBDeviceFilterList;

    void i_updateDeviceList(USBProxyBackend *pUsbProxyBackend, PUSBDEVICE pDevices);
    void i_getUSBFilters(USBDeviceFilterList *pGlobalFiltes);

protected:
    ComObjPtr<HostUSBDevice> findDeviceById(IN_GUID aId);

    static HRESULT setError(HRESULT aResultCode, const char *aText, ...);

private:

    /** Pointer to the Host object. */
    Host *mHost;
    /** List of smart HostUSBDevice pointers. */
    typedef std::list<ComObjPtr<HostUSBDevice> > HostUSBDeviceList;
    /** List of the known USB devices. */
    HostUSBDeviceList mDevices;
    /** List of USBProxyBackend pointers. */
    typedef std::list<USBProxyBackend *> USBProxyBackendList;
    /** List of active USB backends. */
    USBProxyBackendList mBackends;
    int                 mLastError;
};

#endif /* !____H_USBPROXYSERVICE */
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