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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.mtp;
     18 
     19 import com.android.internal.util.Preconditions;
     20 
     21 /**
     22  * Java wrapper for MTP/PTP support as USB responder.
     23  * {@hide}
     24  */
     25 public class MtpServer implements Runnable {
     26 
     27     private long mNativeContext; // accessed by native methods
     28     private final MtpDatabase mDatabase;
     29     private final Runnable mOnTerminate;
     30 
     31     static {
     32         System.loadLibrary("media_jni");
     33     }
     34 
     35     public MtpServer(
     36             MtpDatabase database,
     37             boolean usePtp,
     38             Runnable onTerminate,
     39             String deviceInfoManufacturer,
     40             String deviceInfoModel,
     41             String deviceInfoDeviceVersion,
     42             String deviceInfoSerialNumber) {
     43         mDatabase = Preconditions.checkNotNull(database);
     44         mOnTerminate = Preconditions.checkNotNull(onTerminate);
     45         native_setup(
     46                 database,
     47                 usePtp,
     48                 deviceInfoManufacturer,
     49                 deviceInfoModel,
     50                 deviceInfoDeviceVersion,
     51                 deviceInfoSerialNumber);
     52         database.setServer(this);
     53     }
     54 
     55     public void start() {
     56         Thread thread = new Thread(this, "MtpServer");
     57         thread.start();
     58     }
     59 
     60     @Override
     61     public void run() {
     62         native_run();
     63         native_cleanup();
     64         mDatabase.close();
     65         mOnTerminate.run();
     66     }
     67 
     68     public void sendObjectAdded(int handle) {
     69         native_send_object_added(handle);
     70     }
     71 
     72     public void sendObjectRemoved(int handle) {
     73         native_send_object_removed(handle);
     74     }
     75 
     76     public void sendDevicePropertyChanged(int property) {
     77         native_send_device_property_changed(property);
     78     }
     79 
     80     public void addStorage(MtpStorage storage) {
     81         native_add_storage(storage);
     82     }
     83 
     84     public void removeStorage(MtpStorage storage) {
     85         native_remove_storage(storage.getStorageId());
     86     }
     87 
     88     public static void configure(boolean usePtp) {
     89         native_configure(usePtp);
     90     }
     91 
     92     public static native final void native_configure(boolean usePtp);
     93     private native final void native_setup(
     94             MtpDatabase database,
     95             boolean usePtp,
     96             String deviceInfoManufacturer,
     97             String deviceInfoModel,
     98             String deviceInfoDeviceVersion,
     99             String deviceInfoSerialNumber);
    100     private native final void native_run();
    101     private native final void native_cleanup();
    102     private native final void native_send_object_added(int handle);
    103     private native final void native_send_object_removed(int handle);
    104     private native final void native_send_device_property_changed(int property);
    105     private native final void native_add_storage(MtpStorage storage);
    106     private native final void native_remove_storage(int storageId);
    107 }
    108