mirror of
https://github.com/RetroDECK/Duckstation.git
synced 2024-11-26 23:55:40 +00:00
69 lines
2.4 KiB
C
69 lines
2.4 KiB
C
|
/*
|
||
|
|
* 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 "../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 */
|