Java UsbInterface.getInterfaceSubclass方法代碼示例

import android.hardware.usb.UsbInterface; //導入方法依賴的package包/類
/**
 * Request a device access permission if there is a MIDI interface in the device.
 *
 * @param device a USB device
 */
private void requestDevicePermissionIfNecessary(UsbDevice device) {
    for (UsbDevice d : mRequestedDevices) {
        if (d.getDeviceId() == device.getDeviceId()) {
            // It is already requested.
            return;
        }
    }

    for (int i = 0; i < device.getInterfaceCount(); ++i) {
        UsbInterface iface = device.getInterface(i);
        if (iface.getInterfaceClass() == UsbConstants.USB_CLASS_AUDIO
                && iface.getInterfaceSubclass() == UsbMidiDeviceAndroid.MIDI_SUBCLASS) {
            // There is at least one interface supporting MIDI.
            mUsbManager.requestPermission(device,
                    PendingIntent.getBroadcast(ContextUtils.getApplicationContext(), 0,
                            new Intent(ACTION_USB_PERMISSION), 0));
            mRequestedDevices.add(device);
            break;
        }
    }
}
 

import android.hardware.usb.UsbInterface; //導入方法依賴的package包/類
/**
 * Constructs a UsbMidiDeviceAndroid.
 * @param manager
 * @param device The USB device which this object is assocated with.
 */
UsbMidiDeviceAndroid(UsbManager manager, UsbDevice device) {
    mConnection = manager.openDevice(device);
    mEndpointMap = new HashMap<Integer, UsbEndpoint>();
    mRequestMap = new HashMap<UsbEndpoint, UsbRequest>();

    for (int i = 0; i < device.getInterfaceCount(); ++i) {
        UsbInterface iface = device.getInterface(i);
        if (iface.getInterfaceClass() != UsbConstants.USB_CLASS_AUDIO ||
            iface.getInterfaceSubclass() != MIDI_SUBCLASS) {
            continue;
        }
        mConnection.claimInterface(iface, true);
        for (int j = 0; j < iface.getEndpointCount(); ++j) {
            UsbEndpoint endpoint = iface.getEndpoint(j);
            if (endpoint.getDirection() == UsbConstants.USB_DIR_OUT) {
                mEndpointMap.put(endpoint.getEndpointNumber(), endpoint);
            }
        }
    }
}
 

import android.hardware.usb.UsbInterface; //導入方法依賴的package包/類
static private UsbInterface findAdbInterface(UsbDevice device) {
    Log.d(TAG, "findAdbInterface " + device);
    int count = device.getInterfaceCount();
    for (int i = 0; i < count; i++) {
        UsbInterface intf = device.getInterface(i);
        if (intf.getInterfaceClass() == 255 && intf.getInterfaceSubclass() == 66 &&
                intf.getInterfaceProtocol() == 1) {
            return intf;
        }
    }
    return null;
}
 

import android.hardware.usb.UsbInterface; //導入方法依賴的package包/類
static private UsbInterface findAdbInterface(android.hardware.usb.UsbDevice device) {

        int count = device.getInterfaceCount();
        for (int i = 0; i < count; i++) {
            UsbInterface intf = device.getInterface(i);
            if (intf.getInterfaceClass() == 3
                    && intf.getInterfaceSubclass() == 0
                    && intf.getInterfaceProtocol() == 0) {
                return intf;
            }
        }
        return null;
    }
 

import android.hardware.usb.UsbInterface; //導入方法依賴的package包/類
private void initEnpoints(UsbInterface usbInterface) {
    usbInterface.getInterfaceSubclass();
    UsbEndpoint endpoint = usbInterface.getEndpoint(0);
    UsbEndpoint endpoint2 = usbInterface.getEndpoint(1);
    if (endpoint.getDirection() == UsbConstants.USB_DIR_IN) {
        UsbEndpoint usbEndpoint = endpoint2;
        endpoint2 = endpoint;
        endpoint = usbEndpoint;
    }
    inputEndpoint = endpoint2;
    outputEndpoint = endpoint;
}
 

import android.hardware.usb.UsbInterface; //導入方法依賴的package包/類
/**
 * Tests to see if a {@link android.hardware.usb.UsbDevice}
 * supports the PTP protocol (typically used by digital cameras)
 *
 * @param device the device to test
 * @return true if the device is a PTP device.
 */
static public boolean isCamera(UsbDevice device) {
    int count = device.getInterfaceCount();
    for (int i = 0; i < count; i++) {
        UsbInterface intf = device.getInterface(i);
        if (intf.getInterfaceClass() == UsbConstants.USB_CLASS_STILL_IMAGE &&
                intf.getInterfaceSubclass() == 1 &&
                intf.getInterfaceProtocol() == 1) {
            return true;
        }
    }
    return false;
}
 

import android.hardware.usb.UsbInterface; //導入方法依賴的package包/類
/**
 * Constructs a UsbMidiDeviceAndroid.
 * @param manager
 * @param device The USB device which this object is assocated with.
 */
UsbMidiDeviceAndroid(UsbManager manager, UsbDevice device) {
    mConnection = manager.openDevice(device);
    mEndpointMap = new SparseArray<UsbEndpoint>();
    mRequestMap = new HashMap<UsbEndpoint, UsbRequest>();
    mHandler = new Handler();
    mUsbDevice = device;
    mIsClosed = false;
    mHasInputThread = false;
    mNativePointer = 0;

    for (int i = 0; i < device.getInterfaceCount(); ++i) {
        UsbInterface iface = device.getInterface(i);
        if (iface.getInterfaceClass() != UsbConstants.USB_CLASS_AUDIO
                || iface.getInterfaceSubclass() != MIDI_SUBCLASS) {
            continue;
        }
        mConnection.claimInterface(iface, true);
        for (int j = 0; j < iface.getEndpointCount(); ++j) {
            UsbEndpoint endpoint = iface.getEndpoint(j);
            if (endpoint.getDirection() == UsbConstants.USB_DIR_OUT) {
                mEndpointMap.put(endpoint.getEndpointNumber(), endpoint);
            }
        }
    }
    // Start listening for input endpoints.
    // This function will create and run a thread if there is USB-MIDI endpoints in the
    // device. Note that because UsbMidiDevice is shared among all tabs and the thread
    // will be terminated when the device is disconnected, at most one thread can be created
    // for each connected USB-MIDI device.
    startListen(device);
}
 

import android.hardware.usb.UsbInterface; //導入方法依賴的package包/類
/**
 * Enumerates USB-MIDI devices.
 * If there are devices having USB-MIDI interfaces, this function requests permission for
 * accessing the device to the user.
 * When the permission request is accepted or rejected onRequestDone will be called.
 *
 * If there are no USB-MIDI interfaces, this function returns false.
 * @return true if some permission requests are in progress.
 */
@CalledByNative
boolean enumerateDevices(Context context) {
    mUsbManager = (UsbManager)context.getSystemService(Context.USB_SERVICE);
    Map<String, UsbDevice> devices = mUsbManager.getDeviceList();
    PendingIntent pendingIntent = PendingIntent.getBroadcast(
            context, 0, new Intent(ACTION_USB_PERMISSION), 0);
    mRequestedDevices = new HashSet<UsbDevice>();
    for (UsbDevice device : devices.values()) {
        boolean found = false;
        for (int i = 0; i < device.getInterfaceCount() && !found; ++i) {
            UsbInterface iface = device.getInterface(i);
            if (iface.getInterfaceClass() == UsbConstants.USB_CLASS_AUDIO &&
                iface.getInterfaceSubclass() == UsbMidiDeviceAndroid.MIDI_SUBCLASS) {
                found = true;
            }
        }
        if (found) {
            mUsbManager.requestPermission(device, pendingIntent);
            mRequestedDevices.add(device);
        }
    }
    if (mRequestedDevices.isEmpty()) {
        // No USB-MIDI devices are found.
        return false;
    }

    IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);
    mReceiver = new BroadcastReceiver() {
        public void onReceive(Context context, Intent intent) {
            if (ACTION_USB_PERMISSION.equals(intent.getAction())) {
                onRequestDone(context, intent);
            }
        }
    };
    context.registerReceiver(mReceiver, filter);
    return true;
}
 

import android.hardware.usb.UsbInterface; //導入方法依賴的package包/類
public static UsbInterface findMidiInterface(UsbDevice device) {
  int count = device.getInterfaceCount();
  for (int i = 0; i < count; i++) {
    UsbInterface usbIf = device.getInterface(i);
    if (usbIf.getInterfaceClass() == 1 && usbIf.getInterfaceSubclass() == 3) {
      return usbIf;
    }
  }
  return null;
}
 

import android.hardware.usb.UsbInterface; //導入方法依賴的package包/類
private boolean filterDevice(UsbDevice device, JSONArray filters) throws JSONException {
    if (filters == null) {
        return true;
    }
    Log.d(TAG, "filtering " + filters);
    for (int filterIdx = 0; filterIdx < filters.length(); filterIdx++) {
        JSONObject filter = filters.getJSONObject(filterIdx);
        int vendorId = filter.optInt("vendorId", -1);
        if (vendorId != -1) {
            if (device.getVendorId() != vendorId) {
                continue;
            }
        }
        int productId = filter.optInt("productId", -1);
        if (productId != -1) {
            if (device.getProductId() != productId) {
                continue;
            }
        }
        int interfaceClass = filter.optInt("interfaceClass", -1);
        int interfaceSubclass = filter.optInt("interfaceSubclass", -1);
        int interfaceProtocol = filter.optInt("interfaceProtocol", -1);
        if (interfaceClass == -1 && interfaceSubclass == -1 && interfaceProtocol == -1) {
            return true;
        }
        int interfaceCount = device.getInterfaceCount();
        for (int interfaceIdx = 0; interfaceIdx < interfaceCount; interfaceIdx++) {
            UsbInterface usbInterface = device.getInterface(interfaceIdx);
            if (interfaceClass != -1) {
                if (interfaceClass != usbInterface.getInterfaceClass()) {
                    continue;
                }
            }
            if (interfaceSubclass != -1) {
                if (interfaceSubclass != usbInterface.getInterfaceSubclass()) {
                    continue;
                }
            }
            if (interfaceProtocol != -1) {
                if (interfaceProtocol != usbInterface.getInterfaceProtocol()) {
                    continue;
                }
            }
            return true;
        }
    }
    return false;
}
 

import android.hardware.usb.UsbInterface; //導入方法依賴的package包/類
private UsbDeviceInfo getInfoForDevice(UsbDevice dev, UsbDeviceConnection devConn) {
	UsbDeviceInfo info = new UsbDeviceInfo();
	UsbIpDevice ipDev = new UsbIpDevice();
	
	ipDev.path = dev.getDeviceName();
	ipDev.busnum = deviceIdToBusNum(dev.getDeviceId());
	ipDev.devnum =  deviceIdToDevNum(dev.getDeviceId());
	ipDev.busid = String.format("%d-%d", ipDev.busnum, ipDev.devnum);
	
	ipDev.idVendor = (short) dev.getVendorId();
	ipDev.idProduct = (short) dev.getProductId();
	ipDev.bcdDevice = -1;
	
	ipDev.bDeviceClass = (byte) dev.getDeviceClass();
	ipDev.bDeviceSubClass = (byte) dev.getDeviceSubclass();
	ipDev.bDeviceProtocol = (byte) dev.getDeviceProtocol();
	
	ipDev.bConfigurationValue = 0;
	ipDev.bNumConfigurations = 1;
	
	ipDev.bNumInterfaces = (byte) dev.getInterfaceCount();
	
	info.dev = ipDev;
	info.interfaces = new UsbIpInterface[ipDev.bNumInterfaces];
	
	for (int i = 0; i < ipDev.bNumInterfaces; i++) {
		info.interfaces[i] = new UsbIpInterface();
		UsbInterface iface = dev.getInterface(i);
		
		info.interfaces[i].bInterfaceClass = (byte) iface.getInterfaceClass();
		info.interfaces[i].bInterfaceSubClass = (byte) iface.getInterfaceSubclass();
		info.interfaces[i].bInterfaceProtocol = (byte) iface.getInterfaceProtocol();
	}
	
	AttachedDeviceContext context = connections.get(dev.getDeviceId());
	UsbDeviceDescriptor devDesc = null;
	if (context != null) {
		// Since we're attached already, we can directly query the USB descriptors
		// to fill some information that Android's USB API doesn't expose
		devDesc = UsbControlHelper.readDeviceDescriptor(context.devConn);
		
		ipDev.bcdDevice = devDesc.bcdDevice;
		ipDev.bNumConfigurations = devDesc.bNumConfigurations;
	}
	
	ipDev.speed = detectSpeed(dev, devDesc);
	
	return info;
}
 

import android.hardware.usb.UsbInterface; //導入方法依賴的package包/類
/**
 * This method iterates through all connected USB devices and searches for
 * mass storage devices.
 *
 * @param context Context to get the {@link UsbManager}
 * @return An array of suitable mass storage devices or an empty array if none could be found.
 */
public static UsbMassStorageDevice[] getMassStorageDevices(Context context) {
  UsbManager usbManager = (UsbManager) context.getSystemService(Context.USB_SERVICE);
  ArrayList<UsbMassStorageDevice> result = new ArrayList<UsbMassStorageDevice>();

  for (UsbDevice device : usbManager.getDeviceList().values()) {
    Log.i(TAG, "found usb device: " + device);

    int interfaceCount = device.getInterfaceCount();
    for (int i = 0; i < interfaceCount; i++) {
      UsbInterface usbInterface = device.getInterface(i);
      Log.i(TAG, "found usb interface: " + usbInterface);

      // we currently only support SCSI transparent command set with
      // bulk transfers only!
      if (usbInterface.getInterfaceClass() != UsbConstants.USB_CLASS_MASS_STORAGE
          || usbInterface.getInterfaceSubclass() != INTERFACE_SUBCLASS
          || usbInterface.getInterfaceProtocol() != INTERFACE_PROTOCOL) {
        Log.i(TAG, "device interface not suitable!");
        continue;
      }

      // Every mass storage device has exactly two endpoints
      // One IN and one OUT endpoint
      int endpointCount = usbInterface.getEndpointCount();
      if (endpointCount != 2) {
        Log.w(TAG, "inteface endpoint count != 2");
      }

      UsbEndpoint outEndpoint = null;
      UsbEndpoint inEndpoint = null;
      for (int j = 0; j < endpointCount; j++) {
        UsbEndpoint endpoint = usbInterface.getEndpoint(j);
        Log.i(TAG, "found usb endpoint: " + endpoint);
        if (endpoint.getType() == UsbConstants.USB_ENDPOINT_XFER_BULK) {
          if (endpoint.getDirection() == UsbConstants.USB_DIR_OUT) {
            outEndpoint = endpoint;
          } else {
            inEndpoint = endpoint;
          }
        }
      }

      if (outEndpoint == null || inEndpoint == null) {
        Log.e(TAG, "Not all needed endpoints found!");
        continue;
      }

      result.add(new UsbMassStorageDevice(usbManager, device, usbInterface, inEndpoint,
          outEndpoint));

    }
  }

  return result.toArray(new UsbMassStorageDevice[0]);
}