63 lines
1.2 KiB
Java
63 lines
1.2 KiB
Java
/**
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*
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Copyright (c) 2009 Kazuhiko Arase
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URL: http://www.d-project.com/
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Licensed under the MIT license:
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http://www.opensource.org/licenses/mit-license.php
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The word "QR Code" is registered trademark of
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DENSO WAVE INCORPORATED
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http://www.denso-wave.com/qrcode/faqpatent-e.html
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*/
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package com.pdfjet;
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/**
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* BitBuffer
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* @author Kazuhiko Arase
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*/
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class BitBuffer {
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private byte[] buffer;
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private int length;
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private int increments = 32;
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public BitBuffer() {
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buffer = new byte[increments];
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length = 0;
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}
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public byte[] getBuffer() {
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return buffer;
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}
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public int getLengthInBits() {
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return length;
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}
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public void put(int num, int length) {
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for (int i = 0; i < length; i++) {
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put(((num >>> (length - i - 1)) & 1) == 1);
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}
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}
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public void put(boolean bit) {
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if (length == buffer.length * 8) {
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byte[] newBuffer = new byte[buffer.length + increments];
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System.arraycopy(buffer, 0, newBuffer, 0, buffer.length);
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buffer = newBuffer;
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}
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if (bit) {
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buffer[length / 8] |= (0x80 >>> (length % 8));
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}
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length++;
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}
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}
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