Android Open Source - USBIPServerForAndroid Usb Ip Device Packet

From Project

Back to project page USBIPServerForAndroid.

License

The source code is released under:

GNU General Public License

If you think the Android project USBIPServerForAndroid listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

package org.cgutman.usbip.server.protocol.dev;
//from w  w  w  .  j a  va2 s .  c  o m
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;

import org.cgutman.usbip.utils.StreamUtils;

public abstract class UsbIpDevicePacket {
  public static final int USBIP_CMD_SUBMIT = 0x0001;
  public static final int USBIP_CMD_UNLINK = 0x0002;
  public static final int USBIP_RET_SUBMIT = 0x0003;
  public static final int USBIP_RET_UNLINK = 0x0004;
  public static final int USBIP_RESET_DEV = 0xFFFF;
  
  public static final int USBIP_DIR_OUT = 0;
  public static final int USBIP_DIR_IN = 1;
  
  public static final int USBIP_STATUS_ENDPOINT_HALTED = -32;
  public static final int USBIP_STATUS_URB_ABORTED = -54;
  public static final int USBIP_STATUS_DATA_OVERRUN = -75;
  public static final int USBIP_STATUS_URB_TIMED_OUT = -110;
  public static final int USBIP_STATUS_SHORT_TRANSFER = -121;
    
  public static final int USBIP_HEADER_SIZE = 48;
  
  public int command;
  public int seqNum;
  public int devId;
  public int direction;
  public int ep;
  
  public UsbIpDevicePacket(byte[] header) {
    ByteBuffer bb = ByteBuffer.wrap(header).order(ByteOrder.BIG_ENDIAN);
    command = bb.getInt();
    seqNum = bb.getInt();
    devId = bb.getInt();
    direction = bb.getInt();
    ep = bb.getInt();
  }
  
  public UsbIpDevicePacket(int command, int seqNum, int devId, int dir, int ep) {
    this.command = command;
    this.seqNum = seqNum;
    this.devId = devId;
    this.direction = dir;
    this.ep = ep;
  }
  
  public static UsbIpDevicePacket read(InputStream in) throws IOException {
    ByteBuffer bb = ByteBuffer.allocate(20);
    
    StreamUtils.readAll(in, bb.array());
    
    int command = bb.getInt();
    switch (command)
    {
    case USBIP_CMD_SUBMIT:
      return UsbIpSubmitUrb.read(bb.array(), in);
    case USBIP_CMD_UNLINK:
      return UsbIpUnlinkUrb.read(bb.array(), in);
    default:
      System.err.println("Unknown command: "+command);
      return null;
    }
  }
  
  protected abstract byte[] serializeInternal();
  
  @Override
  public String toString() {
    StringBuilder sb = new StringBuilder();
    sb.append(String.format("Command: 0x%x\n", command));
    sb.append(String.format("Seq: %d\n", seqNum));
    sb.append(String.format("Dev ID: 0x%x\n", devId));
    sb.append(String.format("Direction: %d\n", direction));
    sb.append(String.format("Endpoint: %d\n", ep));
    return sb.toString();
  }
  
  public byte[] serialize() {
    byte[] internalData = serializeInternal();
    
    ByteBuffer bb = ByteBuffer.allocate(20 + internalData.length);
    
    bb.putInt(command);
    bb.putInt(seqNum);
    bb.putInt(devId);
    bb.putInt(direction);
    bb.putInt(ep);
    
    bb.put(internalData);
    
    return bb.array();
  }
}

Java Source Code List