35 lines
1.1 KiB
C
35 lines
1.1 KiB
C
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/*
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* Copyright 2012 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_BASE_CRC32_H_
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#define WEBRTC_BASE_CRC32_H_
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#include <string>
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#include "webrtc/base/basictypes.h"
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namespace rtc {
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// Updates a CRC32 checksum with |len| bytes from |buf|. |initial| holds the
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// checksum result from the previous update; for the first call, it should be 0.
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uint32_t UpdateCrc32(uint32_t initial, const void* buf, size_t len);
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// Computes a CRC32 checksum using |len| bytes from |buf|.
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inline uint32_t ComputeCrc32(const void* buf, size_t len) {
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return UpdateCrc32(0, buf, len);
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}
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inline uint32_t ComputeCrc32(const std::string& str) {
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return ComputeCrc32(str.c_str(), str.size());
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}
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} // namespace rtc
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#endif // WEBRTC_BASE_CRC32_H_
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