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/*
* Copyright (C) 2011 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 android.os.storage;
import android.os.Parcel;
import android.os.Parcelable;
/**
* A class representing a storage volume
* @hide
*/
public class StorageVolume implements Parcelable {
//private static final String TAG = "StorageVolume";
private final String mPath;
private final String mDescription;
private final boolean mRemovable;
private final boolean mEmulated;
private final int mMtpReserveSpace;
private final boolean mAllowMassStorage;
private int mStorageId;
// maximum file size for the storage, or zero for no limit
private final long mMaxFileSize;
// StorageVolume extra for ACTION_MEDIA_REMOVED, ACTION_MEDIA_UNMOUNTED, ACTION_MEDIA_CHECKING,
// ACTION_MEDIA_NOFS, ACTION_MEDIA_MOUNTED, ACTION_MEDIA_SHARED, ACTION_MEDIA_UNSHARED,
// ACTION_MEDIA_BAD_REMOVAL, ACTION_MEDIA_UNMOUNTABLE and ACTION_MEDIA_EJECT broadcasts.
public static final String EXTRA_STORAGE_VOLUME = "storage_volume";
public StorageVolume(String path, String description, boolean removable,
boolean emulated, int mtpReserveSpace, boolean allowMassStorage, long maxFileSize) {
mPath = path;
mDescription = description;
mRemovable = removable;
mEmulated = emulated;
mMtpReserveSpace = mtpReserveSpace;
mAllowMassStorage = allowMassStorage;
mMaxFileSize = maxFileSize;
}
// for parcelling only
private StorageVolume(String path, String description, boolean removable,
boolean emulated, int mtpReserveSpace, int storageId,
boolean allowMassStorage, long maxFileSize) {
mPath = path;
mDescription = description;
mRemovable = removable;
mEmulated = emulated;
mMtpReserveSpace = mtpReserveSpace;
mAllowMassStorage = allowMassStorage;
mStorageId = storageId;
mMaxFileSize = maxFileSize;
}
/**
* Returns the mount path for the volume.
*
* @return the mount path
*/
public String getPath() {
return mPath;
}
/**
* Returns a user visible description of the volume.
*
* @return the volume description
*/
public String getDescription() {
return mDescription;
}
/**
* Returns true if the volume is removable.
*
* @return is removable
*/
public boolean isRemovable() {
return mRemovable;
}
/**
* Returns true if the volume is emulated.
*
* @return is removable
*/
public boolean isEmulated() {
return mEmulated;
}
/**
* Returns the MTP storage ID for the volume.
* this is also used for the storage_id column in the media provider.
*
* @return MTP storage ID
*/
public int getStorageId() {
return mStorageId;
}
/**
* Do not call this unless you are MountService
*/
public void setStorageId(int index) {
// storage ID is 0x00010001 for primary storage,
// then 0x00020001, 0x00030001, etc. for secondary storages
mStorageId = ((index + 1) << 16) + 1;
}
/**
* Number of megabytes of space to leave unallocated by MTP.
* MTP will subtract this value from the free space it reports back
* to the host via GetStorageInfo, and will not allow new files to
* be added via MTP if there is less than this amount left free in the storage.
* If MTP has dedicated storage this value should be zero, but if MTP is
* sharing storage with the rest of the system, set this to a positive value
* to ensure that MTP activity does not result in the storage being
* too close to full.
*
* @return MTP reserve space
*/
public int getMtpReserveSpace() {
return mMtpReserveSpace;
}
/**
* Returns true if this volume can be shared via USB mass storage.
*
* @return whether mass storage is allowed
*/
public boolean allowMassStorage() {
return mAllowMassStorage;
}
/**
* Returns maximum file size for the volume, or zero if it is unbounded.
*
* @return maximum file size
*/
public long getMaxFileSize() {
return mMaxFileSize;
}
@Override
public boolean equals(Object obj) {
if (obj instanceof StorageVolume && mPath != null) {
StorageVolume volume = (StorageVolume)obj;
return (mPath.equals(volume.mPath));
}
return false;
}
@Override
public int hashCode() {
return mPath.hashCode();
}
@Override
public String toString() {
return mPath;
}
public static final Parcelable.Creator<StorageVolume> CREATOR =
new Parcelable.Creator<StorageVolume>() {
public StorageVolume createFromParcel(Parcel in) {
String path = in.readString();
String description = in.readString();
int removable = in.readInt();
int emulated = in.readInt();
int storageId = in.readInt();
int mtpReserveSpace = in.readInt();
int allowMassStorage = in.readInt();
long maxFileSize = in.readLong();
return new StorageVolume(path, description,
removable == 1, emulated == 1, mtpReserveSpace,
storageId, allowMassStorage == 1, maxFileSize);
}
public StorageVolume[] newArray(int size) {
return new StorageVolume[size];
}
};
public int describeContents() {
return 0;
}
public void writeToParcel(Parcel parcel, int flags) {
parcel.writeString(mPath);
parcel.writeString(mDescription);
parcel.writeInt(mRemovable ? 1 : 0);
parcel.writeInt(mEmulated ? 1 : 0);
parcel.writeInt(mStorageId);
parcel.writeInt(mMtpReserveSpace);
parcel.writeInt(mAllowMassStorage ? 1 : 0);
parcel.writeLong(mMaxFileSize);
}
}
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