5af1835d67
It ends up that MediaProvider is persisting MTP storage IDs in its database, so we need to make sure we generate stable IDs over time, otherwise we can end up looking into a black hole. Bug: 22256092 Change-Id: I6a75c239aac1b71fd5f6df0df69b24971079a086
102 lines
2.7 KiB
Java
102 lines
2.7 KiB
Java
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.mtp;
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import android.content.Context;
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import android.os.storage.StorageVolume;
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/**
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* This class represents a storage unit on an MTP device.
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* Used only for MTP support in USB responder mode.
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* MtpStorageInfo is used in MTP host mode
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*
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* @hide
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*/
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public class MtpStorage {
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private final int mStorageId;
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private final String mPath;
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private final String mDescription;
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private final long mReserveSpace;
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private final boolean mRemovable;
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private final long mMaxFileSize;
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public MtpStorage(StorageVolume volume, Context context) {
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mStorageId = volume.getStorageId();
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mPath = volume.getPath();
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mDescription = volume.getDescription(context);
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mReserveSpace = volume.getMtpReserveSpace() * 1024L * 1024L;
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mRemovable = volume.isRemovable();
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mMaxFileSize = volume.getMaxFileSize();
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}
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/**
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* Returns the storage ID for the storage unit
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*
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* @return the storage ID
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*/
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public final int getStorageId() {
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return mStorageId;
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}
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/**
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* Returns the file path for the storage unit's storage in the file system
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*
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* @return the storage file path
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*/
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public final String getPath() {
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return mPath;
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}
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/**
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* Returns the description string for the storage unit
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*
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* @return the storage unit description
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*/
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public final String getDescription() {
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return mDescription;
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}
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/**
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* Returns the amount of space to reserve on the storage file system.
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* This can be set to a non-zero value to prevent MTP from filling up the entire storage.
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*
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* @return reserved space in bytes.
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*/
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public final long getReserveSpace() {
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return mReserveSpace;
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}
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/**
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* Returns true if the storage is removable.
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*
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* @return is removable
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*/
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public final boolean isRemovable() {
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return mRemovable;
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}
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/**
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* Returns maximum file size for the storage, or zero if it is unbounded.
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*
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* @return maximum file size
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*/
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public long getMaxFileSize() {
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return mMaxFileSize;
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}
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}
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