36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
|
/*
|
||
|
|
* 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef RTC_BASE_CRC32_H_
|
||
|
|
#define RTC_BASE_CRC32_H_
|
||
|
|
|
||
|
|
#include <stddef.h>
|
||
|
|
#include <stdint.h>
|
||
|
|
|
||
|
|
#include <string>
|
||
|
|
|
||
|
|
namespace rtc {
|
||
|
|
|
||
|
|
// Updates a CRC32 checksum with |len| bytes from |buf|. |initial| holds the
|
||
|
|
// checksum result from the previous update; for the first call, it should be 0.
|
||
|
|
uint32_t UpdateCrc32(uint32_t initial, const void* buf, size_t len);
|
||
|
|
|
||
|
|
// Computes a CRC32 checksum using |len| bytes from |buf|.
|
||
|
|
inline uint32_t ComputeCrc32(const void* buf, size_t len) {
|
||
|
|
return UpdateCrc32(0, buf, len);
|
||
|
|
}
|
||
|
|
inline uint32_t ComputeCrc32(const std::string& str) {
|
||
|
|
return ComputeCrc32(str.c_str(), str.size());
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace rtc
|
||
|
|
|
||
|
|
#endif // RTC_BASE_CRC32_H_
|