1 /* 2 * Copyright (C) 2015 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.mtp; 18 19 import android.annotation.Nullable; 20 import android.mtp.MtpConstants; 21 22 class MtpDeviceRecord { 23 public final int deviceId; 24 public final String name; 25 public final @Nullable String deviceKey; 26 public final boolean opened; 27 public final MtpRoot[] roots; 28 public final @Nullable int[] operationsSupported; 29 public final @Nullable int[] eventsSupported; 30 31 MtpDeviceRecord(int deviceId, String name, @Nullable String deviceKey, boolean opened, 32 MtpRoot[] roots, @Nullable int[] operationsSupported, 33 @Nullable int[] eventsSupported) { 34 this.deviceId = deviceId; 35 this.name = name; 36 this.opened = opened; 37 this.roots = roots; 38 this.deviceKey = deviceKey; 39 this.operationsSupported = operationsSupported; 40 this.eventsSupported = eventsSupported; 41 } 42 43 /** 44 * Helper method to check operations/events are supported by the device or not. 45 */ 46 static boolean isSupported(@Nullable int[] supportedList, int code) { 47 if (supportedList == null) { 48 return false; 49 } 50 for (int i = 0; i < supportedList.length; i++) { 51 if (supportedList[i] == code) { 52 return true; 53 } 54 } 55 return false; 56 } 57 58 static boolean isPartialReadSupported(@Nullable int[] supportedList, long fileSize) { 59 if (isSupported(supportedList, MtpConstants.OPERATION_GET_PARTIAL_OBJECT_64)) { 60 return true; 61 } 62 if (0 <= fileSize && 63 fileSize <= 0xffffffffL && 64 isSupported(supportedList, MtpConstants.OPERATION_GET_PARTIAL_OBJECT)) { 65 return true; 66 } 67 return false; 68 } 69 70 static boolean isWritingSupported(@Nullable int[] supportedList) { 71 return isSupported(supportedList, MtpConstants.OPERATION_SEND_OBJECT_INFO) && 72 isSupported(supportedList, MtpConstants.OPERATION_SEND_OBJECT); 73 } 74 } 75
