diff options
author | Tom Rini <trini@konsulko.com> | 2023-01-19 09:41:54 -0500 |
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committer | Tom Rini <trini@konsulko.com> | 2023-01-19 09:41:54 -0500 |
commit | 7aec35be4b5fa7aabc0ece03dc8825495d86a1be (patch) | |
tree | 483d9f85e8184cb91f00e3345391bff13eee580a /lib/zstd/decompress/zstd_decompress_block.h | |
parent | 5b958dea5c678dbdb2aeb6ac3c0c8cc8dfea065c (diff) | |
parent | ace75d642fa71034b248cde30709c79e06c52d61 (diff) |
Merge branch '2022-01-18-assorted-updates'
- A few TI platform fixes, compression test cleanup and zstd update,
npcm7xx update, add "part type" subcommand, VBE bugfix on some
platforms, cleanup EVENT related Kconfig option logic (and fix some
platforms), other minor cleanups.
Diffstat (limited to 'lib/zstd/decompress/zstd_decompress_block.h')
-rw-r--r-- | lib/zstd/decompress/zstd_decompress_block.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/lib/zstd/decompress/zstd_decompress_block.h b/lib/zstd/decompress/zstd_decompress_block.h new file mode 100644 index 00000000000..3d2d57a5d25 --- /dev/null +++ b/lib/zstd/decompress/zstd_decompress_block.h @@ -0,0 +1,68 @@ +/* + * Copyright (c) Yann Collet, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under both the BSD-style license (found in the + * LICENSE file in the root directory of this source tree) and the GPLv2 (found + * in the COPYING file in the root directory of this source tree). + * You may select, at your option, one of the above-listed licenses. + */ + + +#ifndef ZSTD_DEC_BLOCK_H +#define ZSTD_DEC_BLOCK_H + +/*-******************************************************* + * Dependencies + *********************************************************/ +#include "../common/zstd_deps.h" /* size_t */ +#include <linux/zstd.h> /* DCtx, and some public functions */ +#include "../common/zstd_internal.h" /* blockProperties_t, and some public functions */ +#include "zstd_decompress_internal.h" /* ZSTD_seqSymbol */ + + +/* === Prototypes === */ + +/* note: prototypes already published within `zstd.h` : + * ZSTD_decompressBlock() + */ + +/* note: prototypes already published within `zstd_internal.h` : + * ZSTD_getcBlockSize() + * ZSTD_decodeSeqHeaders() + */ + + + /* Streaming state is used to inform allocation of the literal buffer */ +typedef enum { + not_streaming = 0, + is_streaming = 1 +} streaming_operation; + +/* ZSTD_decompressBlock_internal() : + * decompress block, starting at `src`, + * into destination buffer `dst`. + * @return : decompressed block size, + * or an error code (which can be tested using ZSTD_isError()) + */ +size_t ZSTD_decompressBlock_internal(ZSTD_DCtx* dctx, + void* dst, size_t dstCapacity, + const void* src, size_t srcSize, const int frame, const streaming_operation streaming); + +/* ZSTD_buildFSETable() : + * generate FSE decoding table for one symbol (ll, ml or off) + * this function must be called with valid parameters only + * (dt is large enough, normalizedCounter distribution total is a power of 2, max is within range, etc.) + * in which case it cannot fail. + * The workspace must be 4-byte aligned and at least ZSTD_BUILD_FSE_TABLE_WKSP_SIZE bytes, which is + * defined in zstd_decompress_internal.h. + * Internal use only. + */ +void ZSTD_buildFSETable(ZSTD_seqSymbol* dt, + const short* normalizedCounter, unsigned maxSymbolValue, + const U32* baseValue, const U8* nbAdditionalBits, + unsigned tableLog, void* wksp, size_t wkspSize, + int bmi2); + + +#endif /* ZSTD_DEC_BLOCK_H */ |