1 /* 2 * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.imageio.plugins.common; 27 28 import java.io.IOException; 29 import javax.imageio.stream.ImageOutputStream; 30 31 /* 32 * Came from GIFEncoder initially. 33 * Modified - to allow for output compressed data without the block counts 34 * which breakup the compressed data stream for GIF. 35 */ 36 public class BitFile { 37 ImageOutputStream output; 38 byte buffer[]; 39 int index; 40 int bitsLeft; // bits left at current index that are avail. 41 42 /** note this also indicates gif format BITFile. **/ 43 boolean blocks = false; 44 45 /* 46 * @param output destination for output data 47 * @param blocks GIF LZW requires block counts for output data 48 */ 49 public BitFile(ImageOutputStream output, boolean blocks) { 50 this.output = output; 51 this.blocks = blocks; 52 buffer = new byte[256]; 53 index = 0; 54 bitsLeft = 8; 55 } 56 57 public void flush() throws IOException { 58 int numBytes = index + (bitsLeft == 8 ? 0 : 1); | 1 /* 2 * Copyright (c) 2005, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.imageio.plugins.common; 27 28 import java.io.IOException; 29 import javax.imageio.stream.ImageOutputStream; 30 31 /* 32 * Came from GIFEncoder initially. 33 * Modified - to allow for output compressed data without the block counts 34 * which breakup the compressed data stream for GIF. 35 */ 36 public class BitFile { 37 ImageOutputStream output; 38 byte[] buffer; 39 int index; 40 int bitsLeft; // bits left at current index that are avail. 41 42 /** note this also indicates gif format BITFile. **/ 43 boolean blocks = false; 44 45 /* 46 * @param output destination for output data 47 * @param blocks GIF LZW requires block counts for output data 48 */ 49 public BitFile(ImageOutputStream output, boolean blocks) { 50 this.output = output; 51 this.blocks = blocks; 52 buffer = new byte[256]; 53 index = 0; 54 bitsLeft = 8; 55 } 56 57 public void flush() throws IOException { 58 int numBytes = index + (bitsLeft == 8 ? 0 : 1); |