diff options
Diffstat (limited to 'src/com/android/gallery3d/data/MtpDevice.java')
-rw-r--r-- | src/com/android/gallery3d/data/MtpDevice.java | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/data/MtpDevice.java b/src/com/android/gallery3d/data/MtpDevice.java new file mode 100644 index 000000000..e654583c5 --- /dev/null +++ b/src/com/android/gallery3d/data/MtpDevice.java @@ -0,0 +1,174 @@ +/* + * Copyright (C) 2010 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 com.android.gallery3d.data; + +import com.android.gallery3d.app.GalleryApp; + +import android.hardware.usb.UsbDevice; +import android.mtp.MtpConstants; +import android.mtp.MtpObjectInfo; +import android.mtp.MtpStorageInfo; +import android.net.Uri; +import android.util.Log; + +import java.util.ArrayList; +import java.util.List; + +public class MtpDevice extends MediaSet { + private static final String TAG = "MtpDevice"; + + private final GalleryApp mApplication; + private final int mDeviceId; + private final String mDeviceName; + private final DataManager mDataManager; + private final MtpContext mMtpContext; + private final String mName; + private final ChangeNotifier mNotifier; + private final Path mItemPath; + private List<MtpObjectInfo> mJpegChildren; + + public MtpDevice(Path path, GalleryApp application, int deviceId, + String name, MtpContext mtpContext) { + super(path, nextVersionNumber()); + mApplication = application; + mDeviceId = deviceId; + mDeviceName = UsbDevice.getDeviceName(deviceId); + mDataManager = application.getDataManager(); + mMtpContext = mtpContext; + mName = name; + mNotifier = new ChangeNotifier(this, Uri.parse("mtp://"), application); + mItemPath = Path.fromString("/mtp/item/" + String.valueOf(deviceId)); + mJpegChildren = new ArrayList<MtpObjectInfo>(); + } + + public MtpDevice(Path path, GalleryApp application, int deviceId, + MtpContext mtpContext) { + this(path, application, deviceId, + MtpDeviceSet.getDeviceName(mtpContext, deviceId), mtpContext); + } + + private List<MtpObjectInfo> loadItems() { + ArrayList<MtpObjectInfo> result = new ArrayList<MtpObjectInfo>(); + + List<MtpStorageInfo> storageList = mMtpContext.getMtpClient() + .getStorageList(mDeviceName); + if (storageList == null) return result; + + for (MtpStorageInfo info : storageList) { + collectJpegChildren(info.getStorageId(), 0, result); + } + + return result; + } + + private void collectJpegChildren(int storageId, int objectId, + ArrayList<MtpObjectInfo> result) { + ArrayList<MtpObjectInfo> dirChildren = new ArrayList<MtpObjectInfo>(); + + queryChildren(storageId, objectId, result, dirChildren); + + for (int i = 0, n = dirChildren.size(); i < n; i++) { + MtpObjectInfo info = dirChildren.get(i); + collectJpegChildren(storageId, info.getObjectHandle(), result); + } + } + + private void queryChildren(int storageId, int objectId, + ArrayList<MtpObjectInfo> jpeg, ArrayList<MtpObjectInfo> dir) { + List<MtpObjectInfo> children = mMtpContext.getMtpClient().getObjectList( + mDeviceName, storageId, objectId); + if (children == null) return; + + for (MtpObjectInfo obj : children) { + int format = obj.getFormat(); + switch (format) { + case MtpConstants.FORMAT_JFIF: + case MtpConstants.FORMAT_EXIF_JPEG: + jpeg.add(obj); + break; + case MtpConstants.FORMAT_ASSOCIATION: + dir.add(obj); + break; + default: + Log.w(TAG, "other type: name = " + obj.getName() + + ", format = " + format); + } + } + } + + public static MtpObjectInfo getObjectInfo(MtpContext mtpContext, int deviceId, + int objectId) { + String deviceName = UsbDevice.getDeviceName(deviceId); + return mtpContext.getMtpClient().getObjectInfo(deviceName, objectId); + } + + @Override + public ArrayList<MediaItem> getMediaItem(int start, int count) { + ArrayList<MediaItem> result = new ArrayList<MediaItem>(); + int begin = start; + int end = Math.min(start + count, mJpegChildren.size()); + + DataManager dataManager = mApplication.getDataManager(); + for (int i = begin; i < end; i++) { + MtpObjectInfo child = mJpegChildren.get(i); + Path childPath = mItemPath.getChild(child.getObjectHandle()); + MtpImage image = (MtpImage) dataManager.peekMediaObject(childPath); + if (image == null) { + image = new MtpImage( + childPath, mApplication, mDeviceId, child, mMtpContext); + } else { + image.updateContent(child); + } + result.add(image); + } + return result; + } + + @Override + public int getMediaItemCount() { + return mJpegChildren.size(); + } + + @Override + public String getName() { + return mName; + } + + @Override + public long reload() { + if (mNotifier.isDirty()) { + mDataVersion = nextVersionNumber(); + mJpegChildren = loadItems(); + } + return mDataVersion; + } + + @Override + public int getSupportedOperations() { + return SUPPORT_IMPORT; + } + + @Override + public boolean Import() { + return mMtpContext.copyAlbum(mDeviceName, mName, mJpegChildren); + } + + @Override + public boolean isLeafAlbum() { + return true; + } +} |