15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2011 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "courgette/crc.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef COURGETTE_USE_CRC_LIB 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# include "zlib.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern "C" { 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# include "third_party/lzma_sdk/7zCrc.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/basictypes.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace courgette { 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)uint32 CalculateCrc(const uint8* buffer, size_t size) { 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32 crc; 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef COURGETTE_USE_CRC_LIB 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Calculate Crc by calling CRC method in zlib 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) crc = crc32(0, buffer, size); 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Calculate Crc by calling CRC method in LZMA SDK 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CrcGenerateTable(); 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) crc = CrcCalc(buffer, size); 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ~crc; 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 35