316 lines
12 KiB
C++
316 lines
12 KiB
C++
// IACore-OSS; The Core Library for All IA Open Source Projects
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// Copyright (C) 2025 IAS (ias@iasoft.dev)
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <IACore/DataOps.hpp>
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#include <zlib.h>
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#include <zstd.h>
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namespace IACore
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{
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STATIC CONSTEXPR UINT32 CRC32_TABLE[] = {
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/* CRC polynomial 0xedb88320 */
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0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832,
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0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
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0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, 0x646ba8c0, 0xfd62f97a,
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0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
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0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
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0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
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0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab,
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0xb6662d3d, 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
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0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, 0x6b6b51f4,
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0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
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0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074,
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0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
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0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525,
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0x206f85b3, 0xb966d409, 0xce61e49f, 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
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0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
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0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
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0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, 0xfed41b76,
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0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
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0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, 0x36034af6,
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0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
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0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7,
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0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
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0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7,
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0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
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0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
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0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
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0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, 0xbdbdf21c, 0xcabac28a, 0x53b39330,
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0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
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0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d,
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};
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// FNV-1a 32-bit Constants
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constexpr uint32_t FNV1A_32_PRIME = 0x01000193; // 16777619
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constexpr uint32_t FNV1A_32_OFFSET = 0x811c9dc5; // 2166136261
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UINT32 DataOps::Hash(IN CONST String &string)
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{
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uint32_t hash = FNV1A_32_OFFSET;
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for (char c : string)
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{
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hash ^= static_cast<uint8_t>(c);
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hash *= FNV1A_32_PRIME;
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}
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return hash;
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}
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UINT32 DataOps::Hash(IN Span<CONST UINT8> data)
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{
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uint32_t hash = FNV1A_32_OFFSET;
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const uint8_t *ptr = static_cast<const uint8_t *>(data.data());
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for (size_t i = 0; i < data.size(); ++i)
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{
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hash ^= ptr[i];
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hash *= FNV1A_32_PRIME;
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}
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return hash;
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}
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UINT32 DataOps::CRC32(IN Span<CONST UINT8> _data)
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{
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UINT32 crc32 = 0xFFFFFFFF;
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#define UPDC32(octet, crc) (CRC32_TABLE[((crc) ^ ((UINT8) octet)) & 0xff] ^ ((crc) >> 8))
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auto data = _data.data();
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auto size = _data.size();
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for (; size; --size, ++data)
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{
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crc32 = UPDC32(*data, crc32);
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}
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#undef UPDC32
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return ~crc32;
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}
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DataOps::CompressionType DataOps::DetectCompression(IN Span<CONST UINT8> data)
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{
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if (data.size() < 2)
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return CompressionType::None;
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// Check for GZIP Magic Number (0x1F 0x8B)
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if (data[0] == 0x1F && data[1] == 0x8B)
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return CompressionType::Gzip;
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// Check for ZLIB Magic Number (starts with 0x78)
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// 0x78 = Deflate compression with 32k window size
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if (data[0] == 0x78 && (data[1] == 0x01 || data[1] == 0x9C || data[1] == 0xDA))
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return CompressionType::Zlib;
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return CompressionType::None;
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}
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Expected<Vector<UINT8>, String> DataOps::ZlibInflate(IN Span<CONST UINT8> data)
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{
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z_stream zs{};
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zs.zalloc = Z_NULL;
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zs.zfree = Z_NULL;
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zs.opaque = Z_NULL;
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// 15 + 32 = Auto-detect Gzip or Zlib
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if (inflateInit2(&zs, 15 + 32) != Z_OK)
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return MakeUnexpected("Failed to initialize zlib inflate");
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zs.next_in = const_cast<Bytef *>(data.data());
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zs.avail_in = static_cast<uInt>(data.size());
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Vector<UINT8> outBuffer;
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// Start with 2x input size.
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size_t guessSize = data.size() < 1024 ? data.size() * 4 : data.size() * 2;
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outBuffer.resize(guessSize);
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zs.next_out = reinterpret_cast<Bytef *>(outBuffer.data());
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zs.avail_out = static_cast<uInt>(outBuffer.size());
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int ret;
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do
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{
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if (zs.avail_out == 0)
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{
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size_t currentPos = zs.total_out;
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size_t newSize = outBuffer.size() * 2;
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outBuffer.resize(newSize);
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zs.next_out = reinterpret_cast<Bytef *>(outBuffer.data() + currentPos);
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zs.avail_out = static_cast<uInt>(newSize - currentPos);
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}
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ret = inflate(&zs, Z_NO_FLUSH);
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} while (ret == Z_OK);
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inflateEnd(&zs);
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if (ret != Z_STREAM_END)
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return MakeUnexpected("Failed to inflate: corrupt data or stream error");
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outBuffer.resize(zs.total_out);
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return outBuffer;
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}
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Expected<Vector<UINT8>, String> DataOps::ZlibDeflate(IN Span<CONST UINT8> data)
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{
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z_stream zs{};
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zs.zalloc = Z_NULL;
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zs.zfree = Z_NULL;
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zs.opaque = Z_NULL;
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if (deflateInit(&zs, Z_DEFAULT_COMPRESSION) != Z_OK)
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return MakeUnexpected("Failed to initialize zlib deflate");
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zs.next_in = const_cast<Bytef *>(data.data());
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zs.avail_in = static_cast<uInt>(data.size());
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Vector<UINT8> outBuffer;
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outBuffer.resize(deflateBound(&zs, data.size()));
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zs.next_out = reinterpret_cast<Bytef *>(outBuffer.data());
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zs.avail_out = static_cast<uInt>(outBuffer.size());
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int ret = deflate(&zs, Z_FINISH);
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if (ret != Z_STREAM_END)
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{
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deflateEnd(&zs);
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return MakeUnexpected("Failed to deflate, ran out of buffer memory");
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}
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outBuffer.resize(zs.total_out);
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deflateEnd(&zs);
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return outBuffer;
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}
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Expected<Vector<UINT8>, String> DataOps::ZstdInflate(IN Span<CONST UINT8> data)
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{
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unsigned long long const contentSize = ZSTD_getFrameContentSize(data.data(), data.size());
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if (contentSize == ZSTD_CONTENTSIZE_ERROR)
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return MakeUnexpected("Failed to inflate: Not valid ZSTD compressed data");
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if (contentSize != ZSTD_CONTENTSIZE_UNKNOWN)
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{
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// FAST PATH: We know the size
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Vector<UINT8> outBuffer;
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outBuffer.resize(static_cast<size_t>(contentSize));
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size_t const dSize = ZSTD_decompress(outBuffer.data(), outBuffer.size(), data.data(), data.size());
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if (ZSTD_isError(dSize))
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return MakeUnexpected(std::format("Failed to inflate: {}", ZSTD_getErrorName(dSize)));
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return outBuffer;
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}
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ZSTD_DCtx *dctx = ZSTD_createDCtx();
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Vector<UINT8> outBuffer;
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outBuffer.resize(data.size() * 2);
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ZSTD_inBuffer input = {data.data(), data.size(), 0};
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ZSTD_outBuffer output = {outBuffer.data(), outBuffer.size(), 0};
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size_t ret;
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do
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{
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ret = ZSTD_decompressStream(dctx, &output, &input);
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if (ZSTD_isError(ret))
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{
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ZSTD_freeDCtx(dctx);
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return MakeUnexpected(std::format("Failed to inflate: {}", ZSTD_getErrorName(ret)));
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}
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if (output.pos == output.size)
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{
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size_t newSize = outBuffer.size() * 2;
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outBuffer.resize(newSize);
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output.dst = outBuffer.data();
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output.size = newSize;
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}
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} while (ret != 0);
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outBuffer.resize(output.pos);
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ZSTD_freeDCtx(dctx);
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return outBuffer;
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}
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Expected<Vector<UINT8>, String> DataOps::ZstdDeflate(IN Span<CONST UINT8> data)
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{
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size_t const maxDstSize = ZSTD_compressBound(data.size());
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Vector<UINT8> outBuffer;
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outBuffer.resize(maxDstSize);
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size_t const compressedSize = ZSTD_compress(outBuffer.data(), maxDstSize, data.data(), data.size(), 3);
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if (ZSTD_isError(compressedSize))
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return MakeUnexpected(std::format("Failed to deflate: {}", ZSTD_getErrorName(compressedSize)));
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outBuffer.resize(compressedSize);
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return outBuffer;
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}
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Expected<Vector<UINT8>, String> DataOps::GZipDeflate(IN Span<CONST UINT8> data)
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{
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z_stream zs{};
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zs.zalloc = Z_NULL;
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zs.zfree = Z_NULL;
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zs.opaque = Z_NULL;
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// WindowBits = 15 + 16 (31) = Enforce GZIP encoding
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// MemLevel = 8 (default)
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// Strategy = Z_DEFAULT_STRATEGY
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if (deflateInit2(&zs, Z_DEFAULT_COMPRESSION, Z_DEFLATED, 15 + 16, 8, Z_DEFAULT_STRATEGY) != Z_OK)
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return MakeUnexpected("Failed to initialize gzip deflate");
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zs.next_in = const_cast<Bytef *>(data.data());
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zs.avail_in = static_cast<uInt>(data.size());
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Vector<UINT8> outBuffer;
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outBuffer.resize(deflateBound(&zs, data.size()) + 1024); // Additional 1KB buffer for safety
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zs.next_out = reinterpret_cast<Bytef *>(outBuffer.data());
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zs.avail_out = static_cast<uInt>(outBuffer.size());
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int ret = deflate(&zs, Z_FINISH);
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if (ret != Z_STREAM_END)
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{
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deflateEnd(&zs);
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return MakeUnexpected("Failed to deflate");
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}
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outBuffer.resize(zs.total_out);
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deflateEnd(&zs);
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return outBuffer;
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}
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Expected<Vector<UINT8>, String> DataOps::GZipInflate(IN Span<CONST UINT8> data)
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{
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return ZlibInflate(data);
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}
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} // namespace IACore
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