| /* |
| * Copyright (c) 2000, 2007, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package javax.imageio.stream; |
| |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| /** |
| * A seekable output stream interface for use by |
| * <code>ImageWriter</code>s. Various output destinations, such as |
| * <code>OutputStream</code>s and <code>File</code>s, as well as |
| * future fast I/O destinations may be "wrapped" by a suitable |
| * implementation of this interface for use by the Image I/O API. |
| * |
| * <p> Unlike a standard <code>OutputStream</code>, ImageOutputStream |
| * extends its counterpart, <code>ImageInputStream</code>. Thus it is |
| * possible to read from the stream as it is being written. The same |
| * seek and flush positions apply to both reading and writing, although |
| * the semantics for dealing with a non-zero bit offset before a byte-aligned |
| * write are necessarily different from the semantics for dealing with |
| * a non-zero bit offset before a byte-aligned read. When reading bytes, |
| * any bit offset is set to 0 before the read; when writing bytes, a |
| * non-zero bit offset causes the remaining bits in the byte to be written |
| * as 0s. The byte-aligned write then starts at the next byte position. |
| * |
| * @see ImageInputStream |
| * |
| */ |
| public interface ImageOutputStream extends ImageInputStream, DataOutput { |
| |
| /** |
| * Writes a single byte to the stream at the current position. |
| * The 24 high-order bits of <code>b</code> are ignored. |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. Implementers can use the |
| * {@link ImageOutputStreamImpl#flushBits <code>flushBits</code>} |
| * method of {@link ImageOutputStreamImpl |
| * <code>ImageOutputStreamImpl</code>} to guarantee this. |
| * |
| * @param b an <code>int</code> whose lower 8 bits are to be |
| * written. |
| * |
| * @exception IOException if an I/O error occurs. |
| */ |
| void write(int b) throws IOException; |
| |
| /** |
| * Writes a sequence of bytes to the stream at the current |
| * position. If <code>b.length</code> is 0, nothing is written. |
| * The byte <code>b[0]</code> is written first, then the byte |
| * <code>b[1]</code>, and so on. |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. |
| * |
| * @param b an array of <code>byte</code>s to be written. |
| * |
| * @exception NullPointerException if <code>b</code> is |
| * <code>null</code>. |
| * @exception IOException if an I/O error occurs. |
| */ |
| void write(byte b[]) throws IOException; |
| |
| /** |
| * Writes a sequence of bytes to the stream at the current |
| * position. If <code>len</code> is 0, nothing is written. |
| * The byte <code>b[off]</code> is written first, then the byte |
| * <code>b[off + 1]</code>, and so on. |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. Implementers can use the |
| * {@link ImageOutputStreamImpl#flushBits <code>flushBits</code>} |
| * method of {@link ImageOutputStreamImpl |
| * <code>ImageOutputStreamImpl</code>} to guarantee this. |
| * |
| * @param b an array of <code>byte</code>s to be written. |
| * @param off the start offset in the data. |
| * @param len the number of <code>byte</code>s to write. |
| * |
| * @exception IndexOutOfBoundsException if <code>off</code> is |
| * negative, <code>len</code> is negative, or <code>off + |
| * len</code> is greater than <code>b.length</code>. |
| * @exception NullPointerException if <code>b</code> is |
| * <code>null</code>. |
| * @exception IOException if an I/O error occurs. |
| */ |
| void write(byte b[], int off, int len) throws IOException; |
| |
| /** |
| * Writes a <code>boolean</code> value to the stream. If |
| * <code>v</code> is true, the value <code>(byte)1</code> is |
| * written; if <code>v</code> is false, the value |
| * <code>(byte)0</code> is written. |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. |
| * |
| * @param v the <code>boolean</code> to be written. |
| * |
| * @exception IOException if an I/O error occurs. |
| */ |
| void writeBoolean(boolean v) throws IOException; |
| |
| /** |
| * Writes the 8 low-order bits of <code>v</code> to the |
| * stream. The 24 high-order bits of <code>v</code> are ignored. |
| * (This means that <code>writeByte</code> does exactly the same |
| * thing as <code>write</code> for an integer argument.) |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. |
| * |
| * @param v an <code>int</code> containing the byte value to be |
| * written. |
| * |
| * @exception IOException if an I/O error occurs. |
| */ |
| void writeByte(int v) throws IOException; |
| |
| /** |
| * Writes the 16 low-order bits of <code>v</code> to the |
| * stream. The 16 high-order bits of <code>v</code> are ignored. |
| * If the stream uses network byte order, the bytes written, in |
| * order, will be: |
| * |
| * <pre> |
| * (byte)((v >> 8) & 0xff) |
| * (byte)(v & 0xff) |
| * </pre> |
| * |
| * Otherwise, the bytes written will be: |
| * |
| * <pre> |
| * (byte)(v & 0xff) |
| * (byte)((v >> 8) & 0xff) |
| * </pre> |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. |
| * |
| * @param v an <code>int</code> containing the short value to be |
| * written. |
| * |
| * @exception IOException if an I/O error occurs. |
| */ |
| void writeShort(int v) throws IOException; |
| |
| /** |
| * This method is a synonym for |
| * {@link #writeShort <code>writeShort</code>}. |
| * |
| * @param v an <code>int</code> containing the char (unsigned |
| * short) value to be written. |
| * |
| * @exception IOException if an I/O error occurs. |
| * |
| * @see #writeShort(int) |
| */ |
| void writeChar(int v) throws IOException; |
| |
| /** |
| * Writes the 32 bits of <code>v</code> to the stream. If the |
| * stream uses network byte order, the bytes written, in order, |
| * will be: |
| * |
| * <pre> |
| * (byte)((v >> 24) & 0xff) |
| * (byte)((v >> 16) & 0xff) |
| * (byte)((v >> 8) & 0xff) |
| * (byte)(v & 0xff) |
| * </pre> |
| * |
| * Otheriwse, the bytes written will be: |
| * |
| * <pre> |
| * (byte)(v & 0xff) |
| * (byte)((v >> 8) & 0xff) |
| * (byte)((v >> 16) & 0xff) |
| * (byte)((v >> 24) & 0xff) |
| * </pre> |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. |
| * |
| * @param v an <code>int</code> containing the value to be |
| * written. |
| * |
| * @exception IOException if an I/O error occurs. |
| */ |
| void writeInt(int v) throws IOException; |
| |
| /** |
| * Writes the 64 bits of <code>v</code> to the stream. If the |
| * stream uses network byte order, the bytes written, in order, |
| * will be: |
| * |
| * <pre> |
| * (byte)((v >> 56) & 0xff) |
| * (byte)((v >> 48) & 0xff) |
| * (byte)((v >> 40) & 0xff) |
| * (byte)((v >> 32) & 0xff) |
| * (byte)((v >> 24) & 0xff) |
| * (byte)((v >> 16) & 0xff) |
| * (byte)((v >> 8) & 0xff) |
| * (byte)(v & 0xff) |
| * </pre> |
| * |
| * Otherwise, the bytes written will be: |
| * |
| * <pre> |
| * (byte)(v & 0xff) |
| * (byte)((v >> 8) & 0xff) |
| * (byte)((v >> 16) & 0xff) |
| * (byte)((v >> 24) & 0xff) |
| * (byte)((v >> 32) & 0xff) |
| * (byte)((v >> 40) & 0xff) |
| * (byte)((v >> 48) & 0xff) |
| * (byte)((v >> 56) & 0xff) |
| * </pre> |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. |
| * |
| * @param v a <code>long</code> containing the value to be |
| * written. |
| * |
| * @exception IOException if an I/O error occurs. |
| */ |
| void writeLong(long v) throws IOException; |
| |
| /** |
| * Writes a <code>float</code> value, which is comprised of four |
| * bytes, to the output stream. It does this as if it first |
| * converts this <code>float</code> value to an <code>int</code> |
| * in exactly the manner of the <code>Float.floatToIntBits</code> |
| * method and then writes the int value in exactly the manner of |
| * the <code>writeInt</code> method. |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. |
| * |
| * @param v a <code>float</code> containing the value to be |
| * written. |
| * |
| * @exception IOException if an I/O error occurs. |
| */ |
| void writeFloat(float v) throws IOException; |
| |
| /** |
| * Writes a <code>double</code> value, which is comprised of four |
| * bytes, to the output stream. It does this as if it first |
| * converts this <code>double</code> value to an <code>long</code> |
| * in exactly the manner of the |
| * <code>Double.doubleToLongBits</code> method and then writes the |
| * long value in exactly the manner of the <code>writeLong</code> |
| * method. |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. |
| * |
| * @param v a <code>double</code> containing the value to be |
| * written. |
| * |
| * @exception IOException if an I/O error occurs. |
| */ |
| void writeDouble(double v) throws IOException; |
| |
| /** |
| * Writes a string to the output stream. For every character in |
| * the string <code>s</code>, taken in order, one byte is written |
| * to the output stream. If <code>s</code> is <code>null</code>, a |
| * <code>NullPointerException</code> is thrown. |
| * |
| * <p> If <code>s.length</code> is zero, then no bytes are |
| * written. Otherwise, the character <code>s[0]</code> is written |
| * first, then <code>s[1]</code>, and so on; the last character |
| * written is <code>s[s.length-1]</code>. For each character, one |
| * byte is written, the low-order byte, in exactly the manner of |
| * the <code>writeByte</code> method. The high-order eight bits of |
| * each character in the string are ignored. |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. |
| * |
| * @param s a <code>String</code> containing the value to be |
| * written. |
| * |
| * @exception NullPointerException if <code>s</code> is |
| * <code>null</code>. |
| * @exception IOException if an I/O error occurs. |
| */ |
| void writeBytes(String s) throws IOException; |
| |
| /** |
| * Writes a string to the output stream. For every character in |
| * the string <code>s</code>, taken in order, two bytes are |
| * written to the output stream, ordered according to the current |
| * byte order setting. If network byte order is being used, the |
| * high-order byte is written first; the order is reversed |
| * otherwise. If <code>s</code> is <code>null</code>, a |
| * <code>NullPointerException</code> is thrown. |
| * |
| * <p> If <code>s.length</code> is zero, then no bytes are |
| * written. Otherwise, the character <code>s[0]</code> is written |
| * first, then <code>s[1]</code>, and so on; the last character |
| * written is <code>s[s.length-1]</code>. |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. |
| * |
| * @param s a <code>String</code> containing the value to be |
| * written. |
| * |
| * @exception NullPointerException if <code>s</code> is |
| * <code>null</code>. |
| * @exception IOException if an I/O error occurs. |
| */ |
| void writeChars(String s) throws IOException; |
| |
| /** |
| * Writes two bytes of length information to the output stream in |
| * network byte order, followed by the |
| * <a href="../../../java/io/DataInput.html#modified-utf-8">modified |
| * UTF-8</a> |
| * representation of every character in the string <code>s</code>. |
| * If <code>s</code> is <code>null</code>, a |
| * <code>NullPointerException</code> is thrown. Each character in |
| * the string <code>s</code> is converted to a group of one, two, |
| * or three bytes, depending on the value of the character. |
| * |
| * <p> If a character <code>c</code> is in the range |
| * <code>\u0001</code> through <code>\u007f</code>, it is |
| * represented by one byte: |
| * |
| * <p><pre> |
| * (byte)c |
| * </pre> |
| * |
| * <p> If a character <code>c</code> is <code>\u0000</code> or |
| * is in the range <code>\u0080</code> through |
| * <code>\u07ff</code>, then it is represented by two bytes, |
| * to be written in the order shown: |
| * |
| * <p> <pre><code> |
| * (byte)(0xc0 | (0x1f & (c >> 6))) |
| * (byte)(0x80 | (0x3f & c)) |
| * </code></pre> |
| * |
| * <p> If a character <code>c</code> is in the range |
| * <code>\u0800</code> through <code>uffff</code>, then it is |
| * represented by three bytes, to be written in the order shown: |
| * |
| * <p> <pre><code> |
| * (byte)(0xe0 | (0x0f & (c >> 12))) |
| * (byte)(0x80 | (0x3f & (c >> 6))) |
| * (byte)(0x80 | (0x3f & c)) |
| * </code></pre> |
| * |
| * <p> First, the total number of bytes needed to represent all |
| * the characters of <code>s</code> is calculated. If this number |
| * is larger than <code>65535</code>, then a |
| * <code>UTFDataFormatException</code> is thrown. Otherwise, this |
| * length is written to the output stream in exactly the manner of |
| * the <code>writeShort</code> method; after this, the one-, two-, |
| * or three-byte representation of each character in the string |
| * <code>s</code> is written. |
| * |
| * <p> The current byte order setting is ignored. |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. |
| * |
| * <p><strong>Note:</strong> This method should not be used in |
| * the implementation of image formats that use standard UTF-8, |
| * because the modified UTF-8 used here is incompatible with |
| * standard UTF-8. |
| * |
| * @param s a <code>String</code> containing the value to be |
| * written. |
| * |
| * @exception NullPointerException if <code>s</code> is |
| * <code>null</code>. |
| * @exception UTFDataFormatException if the modified UTF-8 |
| * representation of <code>s</code> requires more than 65536 bytes. |
| * @exception IOException if an I/O error occurs. |
| */ |
| void writeUTF(String s) throws IOException; |
| |
| /** |
| * Writes a sequence of shorts to the stream at the current |
| * position. If <code>len</code> is 0, nothing is written. |
| * The short <code>s[off]</code> is written first, then the short |
| * <code>s[off + 1]</code>, and so on. The byte order of the |
| * stream is used to determine the order in which the individual |
| * bytes are written. |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. |
| * |
| * @param s an array of <code>short</code>s to be written. |
| * @param off the start offset in the data. |
| * @param len the number of <code>short</code>s to write. |
| * |
| * @exception IndexOutOfBoundsException if <code>off</code> is |
| * negative, <code>len</code> is negative, or <code>off + |
| * len</code> is greater than <code>s.length</code>. |
| * @exception NullPointerException if <code>s</code> is |
| * <code>null</code>. |
| * @exception IOException if an I/O error occurs. |
| */ |
| void writeShorts(short[] s, int off, int len) throws IOException; |
| |
| /** |
| * Writes a sequence of chars to the stream at the current |
| * position. If <code>len</code> is 0, nothing is written. |
| * The char <code>c[off]</code> is written first, then the char |
| * <code>c[off + 1]</code>, and so on. The byte order of the |
| * stream is used to determine the order in which the individual |
| * bytes are written. |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. |
| * |
| * @param c an array of <code>char</code>s to be written. |
| * @param off the start offset in the data. |
| * @param len the number of <code>char</code>s to write. |
| * |
| * @exception IndexOutOfBoundsException if <code>off</code> is |
| * negative, <code>len</code> is negative, or <code>off + |
| * len</code> is greater than <code>c.length</code>. |
| * @exception NullPointerException if <code>c</code> is |
| * <code>null</code>. |
| * @exception IOException if an I/O error occurs. |
| */ |
| void writeChars(char[] c, int off, int len) throws IOException; |
| |
| /** |
| * Writes a sequence of ints to the stream at the current |
| * position. If <code>len</code> is 0, nothing is written. |
| * The int <code>i[off]</code> is written first, then the int |
| * <code>i[off + 1]</code>, and so on. The byte order of the |
| * stream is used to determine the order in which the individual |
| * bytes are written. |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. |
| * |
| * @param i an array of <code>int</code>s to be written. |
| * @param off the start offset in the data. |
| * @param len the number of <code>int</code>s to write. |
| * |
| * @exception IndexOutOfBoundsException if <code>off</code> is |
| * negative, <code>len</code> is negative, or <code>off + |
| * len</code> is greater than <code>i.length</code>. |
| * @exception NullPointerException if <code>i</code> is |
| * <code>null</code>. |
| * @exception IOException if an I/O error occurs. |
| */ |
| void writeInts(int[] i, int off, int len) throws IOException; |
| |
| /** |
| * Writes a sequence of longs to the stream at the current |
| * position. If <code>len</code> is 0, nothing is written. |
| * The long <code>l[off]</code> is written first, then the long |
| * <code>l[off + 1]</code>, and so on. The byte order of the |
| * stream is used to determine the order in which the individual |
| * bytes are written. |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. |
| * |
| * @param l an array of <code>long</code>s to be written. |
| * @param off the start offset in the data. |
| * @param len the number of <code>long</code>s to write. |
| * |
| * @exception IndexOutOfBoundsException if <code>off</code> is |
| * negative, <code>len</code> is negative, or <code>off + |
| * len</code> is greater than <code>l.length</code>. |
| * @exception NullPointerException if <code>l</code> is |
| * <code>null</code>. |
| * @exception IOException if an I/O error occurs. |
| */ |
| void writeLongs(long[] l, int off, int len) throws IOException; |
| |
| /** |
| * Writes a sequence of floats to the stream at the current |
| * position. If <code>len</code> is 0, nothing is written. |
| * The float <code>f[off]</code> is written first, then the float |
| * <code>f[off + 1]</code>, and so on. The byte order of the |
| * stream is used to determine the order in which the individual |
| * bytes are written. |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. |
| * |
| * @param f an array of <code>float</code>s to be written. |
| * @param off the start offset in the data. |
| * @param len the number of <code>float</code>s to write. |
| * |
| * @exception IndexOutOfBoundsException if <code>off</code> is |
| * negative, <code>len</code> is negative, or <code>off + |
| * len</code> is greater than <code>f.length</code>. |
| * @exception NullPointerException if <code>f</code> is |
| * <code>null</code>. |
| * @exception IOException if an I/O error occurs. |
| */ |
| void writeFloats(float[] f, int off, int len) throws IOException; |
| |
| /** |
| * Writes a sequence of doubles to the stream at the current |
| * position. If <code>len</code> is 0, nothing is written. |
| * The double <code>d[off]</code> is written first, then the double |
| * <code>d[off + 1]</code>, and so on. The byte order of the |
| * stream is used to determine the order in which the individual |
| * bytes are written. |
| * |
| * <p> If the bit offset within the stream is non-zero, the |
| * remainder of the current byte is padded with 0s |
| * and written out first. The bit offset will be 0 after the |
| * write. |
| * |
| * @param d an array of <code>doubles</code>s to be written. |
| * @param off the start offset in the data. |
| * @param len the number of <code>double</code>s to write. |
| * |
| * @exception IndexOutOfBoundsException if <code>off</code> is |
| * negative, <code>len</code> is negative, or <code>off + |
| * len</code> is greater than <code>d.length</code>. |
| * @exception NullPointerException if <code>d</code> is |
| * <code>null</code>. |
| * @exception IOException if an I/O error occurs. |
| */ |
| void writeDoubles(double[] d, int off, int len) throws IOException; |
| |
| /** |
| * Writes a single bit, given by the least significant bit of the |
| * argument, to the stream at the current bit offset within the |
| * current byte position. The upper 31 bits of the argument are |
| * ignored. The given bit replaces the previous bit at that |
| * position. The bit offset is advanced by one and reduced modulo |
| * 8. |
| * |
| * <p> If any bits of a particular byte have never been set |
| * at the time the byte is flushed to the destination, those |
| * bits will be set to 0 automatically. |
| * |
| * @param bit an <code>int</code> whose least significant bit |
| * is to be written to the stream. |
| * |
| * @exception IOException if an I/O error occurs. |
| */ |
| void writeBit(int bit) throws IOException; |
| |
| /** |
| * Writes a sequence of bits, given by the <code>numBits</code> |
| * least significant bits of the <code>bits</code> argument in |
| * left-to-right order, to the stream at the current bit offset |
| * within the current byte position. The upper <code>64 - |
| * numBits</code> bits of the argument are ignored. The bit |
| * offset is advanced by <code>numBits</code> and reduced modulo |
| * 8. Note that a bit offset of 0 always indicates the |
| * most-significant bit of the byte, and bytes of bits are written |
| * out in sequence as they are encountered. Thus bit writes are |
| * always effectively in network byte order. The actual stream |
| * byte order setting is ignored. |
| * |
| * <p> Bit data may be accumulated in memory indefinitely, until |
| * <code>flushBefore</code> is called. At that time, all bit data |
| * prior to the flushed position will be written. |
| * |
| * <p> If any bits of a particular byte have never been set |
| * at the time the byte is flushed to the destination, those |
| * bits will be set to 0 automatically. |
| * |
| * @param bits a <code>long</code> containing the bits to be |
| * written, starting with the bit in position <code>numBits - |
| * 1</code> down to the least significant bit. |
| * |
| * @param numBits an <code>int</code> between 0 and 64, inclusive. |
| * |
| * @exception IllegalArgumentException if <code>numBits</code> is |
| * not between 0 and 64, inclusive. |
| * @exception IOException if an I/O error occurs. |
| */ |
| void writeBits(long bits, int numBits) throws IOException; |
| |
| /** |
| * Flushes all data prior to the given position to the underlying |
| * destination, such as an <code>OutputStream</code> or |
| * <code>File</code>. Attempting to seek to the flushed portion |
| * of the stream will result in an |
| * <code>IndexOutOfBoundsException</code>. |
| * |
| * @param pos a <code>long</code> containing the length of the |
| * stream prefix that may be flushed to the destination. |
| * |
| * @exception IndexOutOfBoundsException if <code>pos</code> lies |
| * in the flushed portion of the stream or past the current stream |
| * position. |
| * @exception IOException if an I/O error occurs. |
| */ |
| void flushBefore(long pos) throws IOException; |
| } |
