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 com.android.gallery3d.data; 18 19 import com.android.gallery3d.app.GalleryApp; 20 21 public class MtpSource extends MediaSource { 22 private static final String TAG = "MtpSource"; 23 24 private static final int MTP_DEVICESET = 0; 25 private static final int MTP_DEVICE = 1; 26 private static final int MTP_ITEM = 2; 27 28 GalleryApp mApplication; 29 PathMatcher mMatcher; 30 MtpContext mMtpContext; 31 MtpSource(GalleryApp application)32 public MtpSource(GalleryApp application) { 33 super("mtp"); 34 mApplication = application; 35 mMatcher = new PathMatcher(); 36 mMatcher.add("/mtp", MTP_DEVICESET); 37 mMatcher.add("/mtp/*", MTP_DEVICE); 38 mMatcher.add("/mtp/item/*/*", MTP_ITEM); 39 mMtpContext = new MtpContext(mApplication.getAndroidContext()); 40 } 41 42 @Override createMediaObject(Path path)43 public MediaObject createMediaObject(Path path) { 44 switch (mMatcher.match(path)) { 45 case MTP_DEVICESET: { 46 return new MtpDeviceSet(path, mApplication, mMtpContext); 47 } 48 case MTP_DEVICE: { 49 int deviceId = mMatcher.getIntVar(0); 50 return new MtpDevice(path, mApplication, deviceId, mMtpContext); 51 } 52 case MTP_ITEM: { 53 int deviceId = mMatcher.getIntVar(0); 54 int objectId = mMatcher.getIntVar(1); 55 return new MtpImage(path, mApplication, deviceId, objectId, mMtpContext); 56 } 57 default: 58 throw new RuntimeException("bad path: " + path); 59 } 60 } 61 62 @Override pause()63 public void pause() { 64 mMtpContext.pause(); 65 } 66 67 @Override resume()68 public void resume() { 69 mMtpContext.resume(); 70 } 71 isMtpPath(String s)72 public static boolean isMtpPath(String s) { 73 return s != null && Path.fromString(s).getPrefix().equals("mtp"); 74 } 75 } 76