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This commit is contained in:
Danielle Rozenblit
2022-10-11 13:12:19 -07:00
parent a70ca2bd7d
commit 8888a2ddcc
48 changed files with 944 additions and 235 deletions
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lib/zstd.h
+44 -15
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@@ -187,8 +187,8 @@ ZSTDLIB_API unsigned long long ZSTD_getFrameContentSize(const void *src, size_t
* "empty", "unknown" and "error" results to the same return value (0),
* while ZSTD_getFrameContentSize() gives them separate return values.
* @return : decompressed size of `src` frame content _if known and not empty_, 0 otherwise. */
ZSTDLIB_API
ZSTD_DEPRECATED("Replaced by ZSTD_getFrameContentSize")
ZSTDLIB_API
unsigned long long ZSTD_getDecompressedSize(const void* src, size_t srcSize);
/*! ZSTD_findFrameCompressedSize() : Requires v1.4.0+
@@ -823,13 +823,31 @@ ZSTDLIB_API size_t ZSTD_freeDStream(ZSTD_DStream* zds); /* accept NULL pointer
/*===== Streaming decompression functions =====*/
/* This function is redundant with the advanced API and equivalent to:
/*! ZSTD_initDStream() :
* Initialize/reset DStream state for new decompression operation.
* Call before new decompression operation using same DStream.
*
* Note : This function is redundant with the advanced API and equivalent to:
* ZSTD_DCtx_reset(zds, ZSTD_reset_session_only);
* ZSTD_DCtx_refDDict(zds, NULL);
*/
ZSTDLIB_API size_t ZSTD_initDStream(ZSTD_DStream* zds);
/*! ZSTD_decompressStream() :
* Streaming decompression function.
* Call repetitively to consume full input updating it as necessary.
* Function will update both input and output `pos` fields exposing current state via these fields:
* - `input.pos < input.size`, some input remaining and caller should provide remaining input
* on the next call.
* - `output.pos < output.size`, decoder finished and flushed all remaining buffers.
* - `output.pos == output.size`, potentially uncflushed data present in the internal buffers,
* call ZSTD_decompressStream() again to flush remaining data to output.
* Note : with no additional input, amount of data flushed <= ZSTD_BLOCKSIZE_MAX.
*
* @return : 0 when a frame is completely decoded and fully flushed,
* or an error code, which can be tested using ZSTD_isError(),
* or any other value > 0, which means there is some decoding or flushing to do to complete current frame.
*/
ZSTDLIB_API size_t ZSTD_decompressStream(ZSTD_DStream* zds, ZSTD_outBuffer* output, ZSTD_inBuffer* input);
ZSTDLIB_API size_t ZSTD_DStreamInSize(void); /*!< recommended size for input buffer */
@@ -1378,6 +1396,15 @@ typedef enum {
ZSTD_sf_explicitBlockDelimiters = 1 /* Representation of ZSTD_Sequence contains explicit block delimiters */
} ZSTD_sequenceFormat_e;
/*! ZSTD_sequenceBound() :
* `srcSize` : size of the input buffer
* @return : upper-bound for the number of sequences that can be generated
* from a buffer of srcSize bytes
*
* note : returns number of sequences - to get bytes, multiply by sizeof(ZSTD_Sequence).
*/
ZSTDLIB_STATIC_API size_t ZSTD_sequenceBound(size_t srcSize);
/*! ZSTD_generateSequences() :
* Generate sequences using ZSTD_compress2(), given a source buffer.
*
@@ -1683,8 +1710,8 @@ ZSTDLIB_STATIC_API ZSTD_compressionParameters ZSTD_adjustCParams(ZSTD_compressio
* Note : this function is now DEPRECATED.
* It can be replaced by ZSTD_compress2(), in combination with ZSTD_CCtx_setParameter() and other parameter setters.
* This prototype will generate compilation warnings. */
ZSTDLIB_STATIC_API
ZSTD_DEPRECATED("use ZSTD_compress2")
ZSTDLIB_STATIC_API
size_t ZSTD_compress_advanced(ZSTD_CCtx* cctx,
void* dst, size_t dstCapacity,
const void* src, size_t srcSize,
@@ -1695,8 +1722,8 @@ size_t ZSTD_compress_advanced(ZSTD_CCtx* cctx,
* Note : this function is now DEPRECATED.
* It can be replaced by ZSTD_compress2(), in combination with ZSTD_CCtx_loadDictionary() and other parameter setters.
* This prototype will generate compilation warnings. */
ZSTDLIB_STATIC_API
ZSTD_DEPRECATED("use ZSTD_compress2 with ZSTD_CCtx_loadDictionary")
ZSTDLIB_STATIC_API
size_t ZSTD_compress_usingCDict_advanced(ZSTD_CCtx* cctx,
void* dst, size_t dstCapacity,
const void* src, size_t srcSize,
@@ -2199,8 +2226,8 @@ ZSTDLIB_STATIC_API size_t ZSTD_DCtx_getParameter(ZSTD_DCtx* dctx, ZSTD_dParamete
* This instruction is mandatory to decode data without a fully-formed header,
* such ZSTD_f_zstd1_magicless for example.
* @return : 0, or an error code (which can be tested using ZSTD_isError()). */
ZSTDLIB_STATIC_API
ZSTD_DEPRECATED("use ZSTD_DCtx_setParameter() instead")
ZSTDLIB_STATIC_API
size_t ZSTD_DCtx_setFormat(ZSTD_DCtx* dctx, ZSTD_format_e format);
/*! ZSTD_decompressStream_simpleArgs() :
@@ -2236,8 +2263,8 @@ ZSTDLIB_STATIC_API size_t ZSTD_decompressStream_simpleArgs (
* "0" also disables frame content size field. It may be enabled in the future.
* This prototype will generate compilation warnings.
*/
ZSTDLIB_STATIC_API
ZSTD_DEPRECATED("use ZSTD_CCtx_reset, see zstd.h for detailed instructions")
ZSTDLIB_STATIC_API
size_t ZSTD_initCStream_srcSize(ZSTD_CStream* zcs,
int compressionLevel,
unsigned long long pledgedSrcSize);
@@ -2254,8 +2281,8 @@ size_t ZSTD_initCStream_srcSize(ZSTD_CStream* zcs,
* it begins with ZSTD_MAGIC_DICTIONARY, else as raw content) and ZSTD_dlm_byCopy.
* This prototype will generate compilation warnings.
*/
ZSTDLIB_STATIC_API
ZSTD_DEPRECATED("use ZSTD_CCtx_reset, see zstd.h for detailed instructions")
ZSTDLIB_STATIC_API
size_t ZSTD_initCStream_usingDict(ZSTD_CStream* zcs,
const void* dict, size_t dictSize,
int compressionLevel);
@@ -2275,8 +2302,8 @@ size_t ZSTD_initCStream_usingDict(ZSTD_CStream* zcs,
* If srcSize is not known at init time, use value ZSTD_CONTENTSIZE_UNKNOWN.
* This prototype will generate compilation warnings.
*/
ZSTDLIB_STATIC_API
ZSTD_DEPRECATED("use ZSTD_CCtx_reset, see zstd.h for detailed instructions")
ZSTDLIB_STATIC_API
size_t ZSTD_initCStream_advanced(ZSTD_CStream* zcs,
const void* dict, size_t dictSize,
ZSTD_parameters params,
@@ -2290,8 +2317,8 @@ size_t ZSTD_initCStream_advanced(ZSTD_CStream* zcs,
* note : cdict will just be referenced, and must outlive compression session
* This prototype will generate compilation warnings.
*/
ZSTDLIB_STATIC_API
ZSTD_DEPRECATED("use ZSTD_CCtx_reset and ZSTD_CCtx_refCDict, see zstd.h for detailed instructions")
ZSTDLIB_STATIC_API
size_t ZSTD_initCStream_usingCDict(ZSTD_CStream* zcs, const ZSTD_CDict* cdict);
/*! ZSTD_initCStream_usingCDict_advanced() :
@@ -2309,8 +2336,8 @@ size_t ZSTD_initCStream_usingCDict(ZSTD_CStream* zcs, const ZSTD_CDict* cdict);
* value ZSTD_CONTENTSIZE_UNKNOWN.
* This prototype will generate compilation warnings.
*/
ZSTDLIB_STATIC_API
ZSTD_DEPRECATED("use ZSTD_CCtx_reset and ZSTD_CCtx_refCDict, see zstd.h for detailed instructions")
ZSTDLIB_STATIC_API
size_t ZSTD_initCStream_usingCDict_advanced(ZSTD_CStream* zcs,
const ZSTD_CDict* cdict,
ZSTD_frameParameters fParams,
@@ -2334,8 +2361,8 @@ size_t ZSTD_initCStream_usingCDict_advanced(ZSTD_CStream* zcs,
* @return : 0, or an error code (which can be tested using ZSTD_isError())
* This prototype will generate compilation warnings.
*/
ZSTDLIB_STATIC_API
ZSTD_DEPRECATED("use ZSTD_CCtx_reset, see zstd.h for detailed instructions")
ZSTDLIB_STATIC_API
size_t ZSTD_resetCStream(ZSTD_CStream* zcs, unsigned long long pledgedSrcSize);
@@ -2448,18 +2475,20 @@ ZSTDLIB_STATIC_API size_t ZSTD_resetDStream(ZSTD_DStream* zds);
ZSTDLIB_STATIC_API size_t ZSTD_compressBegin(ZSTD_CCtx* cctx, int compressionLevel);
ZSTDLIB_STATIC_API size_t ZSTD_compressBegin_usingDict(ZSTD_CCtx* cctx, const void* dict, size_t dictSize, int compressionLevel);
ZSTDLIB_STATIC_API size_t ZSTD_compressBegin_usingCDict(ZSTD_CCtx* cctx, const ZSTD_CDict* cdict); /**< note: fails if cdict==NULL */
ZSTD_DEPRECATED("This function will likely be removed in the next minor release. It is misleading and has very limited utility.")
ZSTDLIB_STATIC_API size_t ZSTD_copyCCtx(ZSTD_CCtx* cctx, const ZSTD_CCtx* preparedCCtx, unsigned long long pledgedSrcSize); /**< note: if pledgedSrcSize is not known, use ZSTD_CONTENTSIZE_UNKNOWN */
ZSTDLIB_STATIC_API
ZSTD_DEPRECATED("This function will likely be removed in a future release. It is misleading and has very limited utility.")
size_t ZSTD_copyCCtx(ZSTD_CCtx* cctx, const ZSTD_CCtx* preparedCCtx, unsigned long long pledgedSrcSize); /**< note: if pledgedSrcSize is not known, use ZSTD_CONTENTSIZE_UNKNOWN */
ZSTDLIB_STATIC_API size_t ZSTD_compressContinue(ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
ZSTDLIB_STATIC_API size_t ZSTD_compressEnd(ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
/* The ZSTD_compressBegin_advanced() and ZSTD_compressBegin_usingCDict_advanced() are now DEPRECATED and will generate a compiler warning */
ZSTDLIB_STATIC_API
ZSTD_DEPRECATED("use advanced API to access custom parameters")
ZSTDLIB_STATIC_API
size_t ZSTD_compressBegin_advanced(ZSTD_CCtx* cctx, const void* dict, size_t dictSize, ZSTD_parameters params, unsigned long long pledgedSrcSize); /**< pledgedSrcSize : If srcSize is not known at init time, use ZSTD_CONTENTSIZE_UNKNOWN */
ZSTDLIB_STATIC_API
ZSTD_DEPRECATED("use advanced API to access custom parameters")
ZSTDLIB_STATIC_API
size_t ZSTD_compressBegin_usingCDict_advanced(ZSTD_CCtx* const cctx, const ZSTD_CDict* const cdict, ZSTD_frameParameters const fParams, unsigned long long const pledgedSrcSize); /* compression parameters are already set within cdict. pledgedSrcSize must be correct. If srcSize is not known, use macro ZSTD_CONTENTSIZE_UNKNOWN */
/**
Buffer-less streaming decompression (synchronous mode)