android10/frameworks/av/media/mtp/IMtpHandle.h

/*
 * Copyright (C) 2016 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 _IMTP_HANDLE_H
#define _IMTP_HANDLE_H

#include <linux/usb/f_mtp.h>

namespace android {

class IMtpHandle {
public:
    // Return number of bytes read/written, or -1 and errno is set
    virtual int read(void *data, size_t len) = 0;
    virtual int write(const void *data, size_t len) = 0;

    // Return 0 if send/receive is successful, or -1 and errno is set
    virtual int receiveFile(mtp_file_range mfr, bool zero_packet) = 0;
    virtual int sendFile(mtp_file_range mfr) = 0;
    virtual int sendEvent(mtp_event me) = 0;

    // Return 0 if operation is successful, or -1 else
    virtual int start(bool ptp) = 0;

    virtual void close() = 0;

    virtual ~IMtpHandle() {}
};

}

#endif // _IMTP_HANDLE_H