vendor/khanamiryan/qrcode-detector-decoder/lib/common/BitSource.php

这里只显示每个文件的开头 60 行。登录后可以解锁完整代码。

微信扫码关注公众号，代码整理好后第一时间通知你。

<?php
/*
 * Copyright 2007 ZXing authors
 *
 * 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.
 */

namespace Zxing\Common;

/**
 * <p>This provides an easy abstraction to read bits at a time from a sequence of bytes, where the
 * number of bits read is not often a multiple of 8.</p>
 *
 * <p>This class is thread-safe but not reentrant -- unless the caller modifies the bytes array
 * it passed in, in which case all bets are off.</p>
 *
 * @author Sean Owen
 */
final class BitSource {

  private $bytes;
  private $byteOffset = 0;
  private $bitOffset = 0;

  /**
   * @param bytes bytes from which this will read bits. Bits will be read from the first byte first.
   * Bits are read within a byte from most-significant to least-significant bit.
   */
  public function __construct($bytes) {
    $this->bytes = $bytes;
  }

  /**
   * @return index of next bit in current byte which would be read by the next call to {@link #readBits(int)}.
   */
  public function getBitOffset() {
    return $this->bitOffset;
  }

  /**
   * @return index of next byte in input byte array which would be read by the next call to {@link #readBits(int)}.
   */
  public function getByteOffset() {
    return $this->byteOffset;
  }

  /**
   * @param numBits number of bits to read
   * @return int representing the bits read. The bits will appear as the least-significant
   *         bits of the int