diff options
Diffstat (limited to 'src/com/android/gallery3d/data/ImageCacheService.java')
-rw-r--r-- | src/com/android/gallery3d/data/ImageCacheService.java | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/src/com/android/gallery3d/data/ImageCacheService.java b/src/com/android/gallery3d/data/ImageCacheService.java deleted file mode 100644 index 1c7cb8c5e..000000000 --- a/src/com/android/gallery3d/data/ImageCacheService.java +++ /dev/null @@ -1,123 +0,0 @@ -/* - * 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 android.content.Context; - -import com.android.gallery3d.common.BlobCache; -import com.android.gallery3d.common.BlobCache.LookupRequest; -import com.android.gallery3d.common.Utils; -import com.android.gallery3d.data.BytesBufferPool.BytesBuffer; -import com.android.gallery3d.util.CacheManager; -import com.android.gallery3d.util.GalleryUtils; - -import java.io.IOException; -import java.nio.ByteBuffer; - -public class ImageCacheService { - @SuppressWarnings("unused") - private static final String TAG = "ImageCacheService"; - - private static final String IMAGE_CACHE_FILE = "imgcache"; - private static final int IMAGE_CACHE_MAX_ENTRIES = 5000; - private static final int IMAGE_CACHE_MAX_BYTES = 200 * 1024 * 1024; - private static final int IMAGE_CACHE_VERSION = 7; - - private BlobCache mCache; - - public ImageCacheService(Context context) { - mCache = CacheManager.getCache(context, IMAGE_CACHE_FILE, - IMAGE_CACHE_MAX_ENTRIES, IMAGE_CACHE_MAX_BYTES, - IMAGE_CACHE_VERSION); - } - - /** - * Gets the cached image data for the given <code>path</code>, - * <code>timeModified</code> and <code>type</code>. - * - * The image data will be stored in <code>buffer.data</code>, started from - * <code>buffer.offset</code> for <code>buffer.length</code> bytes. If the - * buffer.data is not big enough, a new byte array will be allocated and returned. - * - * @return true if the image data is found; false if not found. - */ - public boolean getImageData(Path path, long timeModified, int type, BytesBuffer buffer) { - byte[] key = makeKey(path, timeModified, type); - long cacheKey = Utils.crc64Long(key); - try { - LookupRequest request = new LookupRequest(); - request.key = cacheKey; - request.buffer = buffer.data; - synchronized (mCache) { - if (!mCache.lookup(request)) return false; - } - if (isSameKey(key, request.buffer)) { - buffer.data = request.buffer; - buffer.offset = key.length; - buffer.length = request.length - buffer.offset; - return true; - } - } catch (IOException ex) { - // ignore. - } - return false; - } - - public void putImageData(Path path, long timeModified, int type, byte[] value) { - byte[] key = makeKey(path, timeModified, type); - long cacheKey = Utils.crc64Long(key); - ByteBuffer buffer = ByteBuffer.allocate(key.length + value.length); - buffer.put(key); - buffer.put(value); - synchronized (mCache) { - try { - mCache.insert(cacheKey, buffer.array()); - } catch (IOException ex) { - // ignore. - } - } - } - - public void clearImageData(Path path, long timeModified, int type) { - byte[] key = makeKey(path, timeModified, type); - long cacheKey = Utils.crc64Long(key); - synchronized (mCache) { - try { - mCache.clearEntry(cacheKey); - } catch (IOException ex) { - // ignore. - } - } - } - - private static byte[] makeKey(Path path, long timeModified, int type) { - return GalleryUtils.getBytes(path.toString() + "+" + timeModified + "+" + type); - } - - private static boolean isSameKey(byte[] key, byte[] buffer) { - int n = key.length; - if (buffer.length < n) { - return false; - } - for (int i = 0; i < n; ++i) { - if (key[i] != buffer[i]) { - return false; - } - } - return true; - } -} |