From 8ef0396b50eb418bc451354b80ab47fa9262d135 Mon Sep 17 00:00:00 2001 From: Emmanuel Marty Date: Fri, 7 Jun 2019 23:18:43 +0200 Subject: [PATCH] Remove file after restructuring --- src/inmem.c | 161 ---------------------------------------------------- 1 file changed, 161 deletions(-) delete mode 100644 src/inmem.c diff --git a/src/inmem.c b/src/inmem.c deleted file mode 100644 index b6f00a4..0000000 --- a/src/inmem.c +++ /dev/null @@ -1,161 +0,0 @@ -/* - * inmem.c - in-memory decompression for benchmarks - * - * Copyright (C) 2019 Emmanuel Marty - * - * This software is provided 'as-is', without any express or implied - * warranty. In no event will the authors be held liable for any damages - * arising from the use of this software. - * - * Permission is granted to anyone to use this software for any purpose, - * including commercial applications, and to alter it and redistribute it - * freely, subject to the following restrictions: - * - * 1. The origin of this software must not be misrepresented; you must not - * claim that you wrote the original software. If you use this software - * in a product, an acknowledgment in the product documentation would be - * appreciated but is not required. - * 2. Altered source versions must be plainly marked as such, and must not be - * misrepresented as being the original software. - * 3. This notice may not be removed or altered from any source distribution. - */ - -/* - * Uses the libdivsufsort library Copyright (c) 2003-2008 Yuta Mori - * - * Inspired by LZ4 by Yann Collet. https://github.com/lz4/lz4 - * With help, ideas, optimizations and speed measurements by spke - * With ideas from Lizard by Przemyslaw Skibinski and Yann Collet. https://github.com/inikep/lizard - * Also with ideas from smallz4 by Stephan Brumme. https://create.stephan-brumme.com/smallz4/ - * - */ - -#include -#include -#include -#include "inmem.h" -#include "lib.h" -#include "frame.h" - -#define BLOCK_SIZE 65536 - -/** - * Get maximum decompressed size of compressed data - * - * @param pFileData compressed data - * @param nFileSize compressed size in bytes - * - * @return maximum decompressed size - */ -size_t lzsa_inmem_get_max_decompressed_size(const unsigned char *pFileData, size_t nFileSize) { - const unsigned char *pCurFileData = pFileData; - const unsigned char *pEndFileData = pCurFileData + nFileSize; - int nFormatVersion = 0; - size_t nMaxDecompressedSize = 0; - const int nHeaderSize = lzsa_get_header_size(); - - /* Check header */ - if ((pCurFileData + nHeaderSize) > pEndFileData || - lzsa_decode_header(pCurFileData, nHeaderSize, &nFormatVersion) != 0) - return -1; - - pCurFileData += nHeaderSize; - - while (pCurFileData < pEndFileData) { - unsigned int nBlockDataSize = 0; - int nIsUncompressed = 0; - const int nFrameSize = lzsa_get_frame_size(); - - /* Decode frame header */ - if ((pCurFileData + nFrameSize) > pEndFileData || - lzsa_decode_frame(pCurFileData, nFrameSize, &nBlockDataSize, &nIsUncompressed) != 0) - return -1; - pCurFileData += nFrameSize; - - if (!nBlockDataSize) - break; - - /* Add one potentially full block to the decompressed size */ - nMaxDecompressedSize += BLOCK_SIZE; - - if ((pCurFileData + nBlockDataSize) > pEndFileData) - return -1; - - pCurFileData += nBlockDataSize; - } - - return nMaxDecompressedSize; -} - -/** - * Decompress data in memory - * - * @param pFileData compressed data - * @param pOutBuffer buffer for decompressed data - * @param nFileSize compressed size in bytes - * @param nMaxOutBufferSize maximum capacity of decompression buffer - * @param pFormatVersion pointer to format version, updated if this function is successful - * - * @return actual decompressed size, or -1 for error - */ -size_t lzsa_inmem_decompress_stream(const unsigned char *pFileData, unsigned char *pOutBuffer, size_t nFileSize, size_t nMaxOutBufferSize, int *pFormatVersion) { - const unsigned char *pCurFileData = pFileData; - const unsigned char *pEndFileData = pCurFileData + nFileSize; - unsigned char *pCurOutBuffer = pOutBuffer; - const unsigned char *pEndOutBuffer = pCurOutBuffer + nMaxOutBufferSize; - int nFormatVersion = 0; - int nPreviousBlockSize; - const int nHeaderSize = lzsa_get_header_size(); - - /* Check header */ - if ((pCurFileData + nHeaderSize) > pEndFileData || - lzsa_decode_header(pCurFileData, nHeaderSize, &nFormatVersion) != 0) - return -1; - - pCurFileData += nHeaderSize; - nPreviousBlockSize = 0; - - while (pCurFileData < pEndFileData) { - unsigned int nBlockDataSize = 0; - int nIsUncompressed = 0; - const int nFrameSize = lzsa_get_frame_size(); - - /* Decode frame header */ - if ((pCurFileData + nFrameSize) > pEndFileData || - lzsa_decode_frame(pCurFileData, nFrameSize, &nBlockDataSize, &nIsUncompressed) != 0) - return -1; - pCurFileData += nFrameSize; - - if (!nBlockDataSize) - break; - - if (!nIsUncompressed) { - int nDecompressedSize; - - /* Decompress block */ - if ((pCurFileData + nBlockDataSize) > pEndFileData) - return -1; - - nDecompressedSize = lzsa_decompressor_expand_block(nFormatVersion, pCurFileData, nBlockDataSize, pCurOutBuffer - nPreviousBlockSize, nPreviousBlockSize, (int)(pEndOutBuffer - pCurOutBuffer + nPreviousBlockSize)); - if (nDecompressedSize < 0) - return -1; - - pCurOutBuffer += nDecompressedSize; - nPreviousBlockSize = nDecompressedSize; - } - else { - /* Copy uncompressed block */ - if ((pCurFileData + nBlockDataSize) > pEndFileData) - return -1; - if ((pCurOutBuffer + nBlockDataSize) > pEndOutBuffer) - return -1; - memcpy(pCurOutBuffer, pCurFileData, nBlockDataSize); - pCurOutBuffer += nBlockDataSize; - } - - pCurFileData += nBlockDataSize; - } - - *pFormatVersion = nFormatVersion; - return (int)(pCurOutBuffer - pOutBuffer); -}