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/*
* Copyright (C) 2012 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.
*/
package com.google.android.apps.adk2;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.ParcelFileDescriptor;
import android.util.Log;
import com.android.future.usb.UsbAccessory;
import com.android.future.usb.UsbManager;
import com.google.android.apps.adk2.activity.ConnectActivity;
public class UsbConnection extends Connection {
Activity mActivity;
FileInputStream mInputStream;
FileOutputStream mOutputStream;
ParcelFileDescriptor mFileDescriptor;
UsbAccessory mAccessory;
private static final String ACTION_USB_PERMISSION = "com.google.android.DemoKit.action.USB_PERMISSION";
private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (UsbManager.ACTION_USB_ACCESSORY_DETACHED.equals(action)) {
UsbAccessory accessory = UsbManager.getAccessory(intent);
if (accessory != null && accessory.equals(mAccessory)) {
Log.i(ADK.TAG, "closing accessory");
Intent connectIntent = new Intent(mActivity,
ConnectActivity.class);
connectIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
mActivity.startActivity(connectIntent);
}
}
}
};
public UsbConnection(Activity activity, UsbManager usbManager,
UsbAccessory accessory) {
mActivity = activity;
mFileDescriptor = usbManager.openAccessory(accessory);
if (mFileDescriptor != null) {
mAccessory = accessory;
FileDescriptor fd = mFileDescriptor.getFileDescriptor();
mInputStream = new FileInputStream(fd);
mOutputStream = new FileOutputStream(fd);
}
IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);
filter.addAction(UsbManager.ACTION_USB_ACCESSORY_DETACHED);
mActivity.registerReceiver(mUsbReceiver, filter);
}
@Override
public InputStream getInputStream() {
return mInputStream;
}
@Override
public OutputStream getOutputStream() {
return mOutputStream;
}
public void close() throws IOException {
if (mFileDescriptor != null) {
mFileDescriptor.close();
}
mActivity.unregisterReceiver(mUsbReceiver);
}
}
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