zstd/compress/zstd_compress_superblock.c

24  *  Compresses literals section for a sub-block.
28  *  table size. If we guessed incorrectly, we fall back to uncompressed literals.
33  *  hufMetadata->hType has literals block type info.
34  *      If it is set_basic, all sub-blocks literals section will be Raw_Literals_Block.
35  *      If it is set_rle, all sub-blocks literals section will be RLE_Literals_Block.
36  *      If it is set_compressed, first sub-block's literals section will be Compressed_Literals_Block
37  *      If it is set_compressed, first sub-block's literals section will be Treeless_Literals_Block
38  *      and the following sub-blocks' literals sections will be Treeless_Literals_Block.
39  *  @return : compressed size of literals section of a sub-block
45                               const BYTE* literals, size_t litSize,
63       return ZSTD_noCompressLiterals(dst, dstSize, literals, litSize);
66       return ZSTD_compressRleLiteralsBlock(dst, dstSize, literals, litSize);
80         const size_t cSize = singleStream ? HUF_compress1X_usingCTable(op, (size_t)(oend-op), literals, litSize, hufTable, flags)
81                                           : HUF_compress4X_usingCTable(op, (size_t)(oend-op), literals, litSize, hufTable, flags);
91             return ZSTD_noCompressLiterals(dst, dstSize, literals, litSize);
97             return ZSTD_noCompressLiterals(dst, dstSize, literals, litSize);
125     DEBUGLOG(5, "Compressed literals: %u -> %u", (U32)litSize, (U32)(op-ostart));
142     DEBUGLOG(5, "ZSTD_seqDecompressedSize: %u sequences from %p: %u literals + %u matchlength",
267                                     const BYTE* literals, size_t litSize,
282                                                         &entropyMetadata->hufMetadata, literals, litSize,
308 static size_t ZSTD_estimateSubBlockSize_literal(const BYTE* literals, size_t litSize,
321         size_t const largest = HIST_count_wksp (countWksp, &maxSymbolValue, (const BYTE*)literals, litSize, workspace, wkspSize);
398 static EstimatedBlockSize ZSTD_estimateSubBlockSize(const BYTE* literals, size_t litSize,
409     ebs.estLitSize = ZSTD_estimateSubBlockSize_literal(literals, litSize,
606         /* update pointers, the nb of literals borrowed from next sequence must be preserved */