chromium/third_party/webrtc/rtc_base/crc32.cc

/*
 *  Copyright 2012 The WebRTC Project Authors. All rights reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#include "rtc_base/crc32.h"

#include "rtc_base/arraysize.h"

namespace rtc {

// This implementation is based on the sample implementation in RFC 1952.

// CRC32 polynomial, in reversed form.
// See RFC 1952, or http://en.wikipedia.org/wiki/Cyclic_redundancy_check
static const uint32_t kCrc32Polynomial = …;

static uint32_t* LoadCrc32Table() { … }

uint32_t UpdateCrc32(uint32_t start, const void* buf, size_t len) { … }

}  // namespace rtc