media/mtp/MtpClient.h

/*
 * Copyright (C) 2010 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef _MTP_CLIENT_H
#define _MTP_CLIENT_H

#include "MtpTypes.h"

#include <utils/threads.h>

struct usb_host_context;

namespace android {

class MtpClientThread;

class MtpClient {
private:
    MtpDeviceList               mDeviceList;
    MtpClientThread*            mThread;
    Condition                   mThreadStartCondition;
    Mutex                       mMutex;
    struct usb_host_context*    mUsbHostContext;
    bool                        mDone;

public:
                            MtpClient();
    virtual                 ~MtpClient();

    bool                    start();
    void                    stop();

    inline MtpDeviceList&   getDeviceList() { return mDeviceList; }
    MtpDevice*              getDevice(int id);


    virtual void            deviceAdded(MtpDevice *device) = 0;
    virtual void            deviceRemoved(MtpDevice *device) = 0;

private:
    // these return true if we should stop monitoring USB and clean up
    bool                    usbDeviceAdded(const char *devname);
    bool                    usbDeviceRemoved(const char *devname);
    bool                    usbDiscoveryDone();

    friend class MtpClientThread;
    bool                    threadLoop();
    static int              usb_device_added(const char *devname, void* client_data);
    static int              usb_device_removed(const char *devname, void* client_data);
    static int              usb_discovery_done(void* client_data);
};

}; // namespace android

#endif // _MTP_CLIENT_H