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Diffstat (limited to 'awt/javax/imageio/stream/MemoryCacheImageInputStream.java')
-rw-r--r-- | awt/javax/imageio/stream/MemoryCacheImageInputStream.java | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/awt/javax/imageio/stream/MemoryCacheImageInputStream.java b/awt/javax/imageio/stream/MemoryCacheImageInputStream.java deleted file mode 100644 index d7fc791..0000000 --- a/awt/javax/imageio/stream/MemoryCacheImageInputStream.java +++ /dev/null @@ -1,119 +0,0 @@ -/* - * Licensed to the Apache Software Foundation (ASF) under one or more - * contributor license agreements. See the NOTICE file distributed with - * this work for additional information regarding copyright ownership. - * The ASF licenses this file to You 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 javax.imageio.stream; - -import org.apache.harmony.x.imageio.stream.RandomAccessMemoryCache; - -import java.io.IOException; -import java.io.InputStream; - -/** - * The MemoryCacheImageInputStream class implements ImageInputStream using a - * memory buffer for caching the data. - * - * @since Android 1.0 - */ -public class MemoryCacheImageInputStream extends ImageInputStreamImpl { - - /** - * The is. - */ - private InputStream is; - - /** - * The ramc. - */ - private RandomAccessMemoryCache ramc = new RandomAccessMemoryCache(); - - /** - * Instantiates a new MemoryCacheImageInputStream which reads from the - * specified InputStream. - * - * @param stream - * the InputStream to be read. - */ - public MemoryCacheImageInputStream(InputStream stream) { - if (stream == null) { - throw new IllegalArgumentException("stream == null!"); - } - is = stream; - } - - @Override - public int read() throws IOException { - bitOffset = 0; - - if (streamPos >= ramc.length()) { - int count = (int)(streamPos - ramc.length() + 1); - int bytesAppended = ramc.appendData(is, count); - - if (bytesAppended < count) { - return -1; - } - } - - int res = ramc.getData(streamPos); - if (res >= 0) { - streamPos++; - } - return res; - } - - @Override - public int read(byte[] b, int off, int len) throws IOException { - bitOffset = 0; - - if (streamPos >= ramc.length()) { - int count = (int)(streamPos - ramc.length() + len); - ramc.appendData(is, count); - } - - int res = ramc.getData(b, off, len, streamPos); - if (res > 0) { - streamPos += res; - } - return res; - } - - @Override - public boolean isCached() { - return true; - } - - @Override - public boolean isCachedFile() { - return false; - } - - @Override - public boolean isCachedMemory() { - return true; - } - - @Override - public void close() throws IOException { - super.close(); - ramc.close(); - } - - @Override - public void flushBefore(long pos) throws IOException { - super.flushBefore(pos); - ramc.freeBefore(getFlushedPosition()); - } -} |