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slightly improved compression speed

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Yann Collet
2016-07-30 00:55:13 +02:00
parent ed57d8530a
commit c0ce4f1211
4 changed files with 24 additions and 22 deletions
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lib/zstd.h
+9 -6
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@@ -80,16 +80,19 @@ ZSTDLIB_API size_t ZSTD_compress( void* dst, size_t dstCapacity,
/*! ZSTD_getDecompressedSize() :
* @return : decompressed size if known, 0 otherwise.
note 1 : decompressed size could be wrong or intentionally modified !
Always ensure result fits within application's authorized limits !
Each application can set its own limit, depending on local limitations.
For extended interoperability, it is recommended to support at least 8 MB.
note 2 : when `0`, if precise failure cause is needed, use ZSTD_getFrameParams() to know more. */
* note 1 : decompressed size could be wrong or intentionally modified !
* Always ensure result fits within application's authorized limits !
* Each application can set its own limit, depending on local restrictions.
* For extended interoperability, it is recommended to support at least 8 MB.
* note 2 : when `0`, if precise failure cause is needed, use ZSTD_getFrameParams() to know more.
* note 3 : when `0`, and if no external guarantee about maximum possible decompressed size,
* it's necessary to use "streaming mode" to decompress data. */
unsigned long long ZSTD_getDecompressedSize(const void* src, size_t srcSize);
/*! ZSTD_decompress() :
`compressedSize` : must be the _exact_ size of compressed input, otherwise decompression will fail.
`dstCapacity` must be equal or larger than originalSize.
`dstCapacity` must be equal or larger than originalSize (see ZSTD_getDecompressedSize() ).
If maximum possible content size is unknown, use streaming mode to decompress data.
@return : the number of bytes decompressed into `dst` (<= `dstCapacity`),
or an errorCode if it fails (which can be tested using ZSTD_isError()) */
ZSTDLIB_API size_t ZSTD_decompress( void* dst, size_t dstCapacity,