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author | Yann Collet <cyan@fb.com> | 2017-08-10 07:48:19 (GMT) |
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committer | Yann Collet <cyan@fb.com> | 2017-08-10 07:48:19 (GMT) |
commit | d8aafe2c52b4b16da9e8d289ad9bdb04b0bc4a05 (patch) | |
tree | 09cf791f84355170306b98a771d9978555f2b55d /doc/lz4_manual.html | |
parent | ca2fb166ab650835c71099842b646d388cebb3ac (diff) | |
download | lz4-d8aafe2c52b4b16da9e8d289ad9bdb04b0bc4a05.zip lz4-d8aafe2c52b4b16da9e8d289ad9bdb04b0bc4a05.tar.gz lz4-d8aafe2c52b4b16da9e8d289ad9bdb04b0bc4a05.tar.bz2 |
dictionary compression correctly uses compression level
Not obvious : copying the state was copying cdict's compression level
Diffstat (limited to 'doc/lz4_manual.html')
-rw-r--r-- | doc/lz4_manual.html | 36 |
1 files changed, 20 insertions, 16 deletions
diff --git a/doc/lz4_manual.html b/doc/lz4_manual.html index 60b41a8..ecc985d 100644 --- a/doc/lz4_manual.html +++ b/doc/lz4_manual.html @@ -175,8 +175,8 @@ int LZ4_freeStream (LZ4_stream_t* streamPtr); Important : Previous data blocks are assumed to remain present and unmodified ! 'dst' buffer must be already allocated. If dstCapacity >= LZ4_compressBound(srcSize), compression is guaranteed to succeed, and runs faster. - If not, and if compressed data cannot fit into 'dst' buffer size, compression stops, and function returns a zero. - After an error, the stream status is invalid, and it can only be reset or freed. + If not, and if compressed data cannot fit into 'dst' buffer size, compression stops, and function @return==0. + After an error, the stream status is invalid, it can only be reset or freed. </p></pre><BR> @@ -205,20 +205,20 @@ int LZ4_freeStreamDecode (LZ4_streamDecode_t* LZ4_stream); <pre><b>int LZ4_decompress_safe_continue (LZ4_streamDecode_t* LZ4_streamDecode, const char* source, char* dest, int compressedSize, int maxDecompressedSize); int LZ4_decompress_fast_continue (LZ4_streamDecode_t* LZ4_streamDecode, const char* source, char* dest, int originalSize); -</b><p> These decoding functions allow decompression of multiple blocks in "streaming" mode. - Previously decoded blocks *must* remain available at the memory position where they were decoded (up to 64 KB) - In the case of a ring buffers, decoding buffer must be either : - - Exactly same size as encoding buffer, with same update rule (block boundaries at same positions) - In which case, the decoding & encoding ring buffer can have any size, including very small ones ( < 64 KB). - - Larger than encoding buffer, by a minimum of maxBlockSize more bytes. - maxBlockSize is implementation dependent. It's the maximum size you intend to compress into a single block. - In which case, encoding and decoding buffers do not need to be synchronized, - and encoding ring buffer can have any size, including small ones ( < 64 KB). - - _At least_ 64 KB + 8 bytes + maxBlockSize. - In which case, encoding and decoding buffers do not need to be synchronized, - and encoding ring buffer can have any size, including larger than decoding buffer. - Whenever these conditions are not possible, save the last 64KB of decoded data into a safe buffer, - and indicate where it is saved using LZ4_setStreamDecode() +</b><p> These decoding functions allow decompression of multiple blocks in "streaming" mode. + Previously decoded blocks *must* remain available at the memory position where they were decoded (up to 64 KB) + In the case of a ring buffers, decoding buffer must be either : + - Exactly same size as encoding buffer, with same update rule (block boundaries at same positions) + In which case, the decoding & encoding ring buffer can have any size, including very small ones ( < 64 KB). + - Larger than encoding buffer, by a minimum of maxBlockSize more bytes. + maxBlockSize is implementation dependent. It's the maximum size you intend to compress into a single block. + In which case, encoding and decoding buffers do not need to be synchronized, + and encoding ring buffer can have any size, including small ones ( < 64 KB). + - _At least_ 64 KB + 8 bytes + maxBlockSize. + In which case, encoding and decoding buffers do not need to be synchronized, + and encoding ring buffer can have any size, including larger than decoding buffer. + Whenever these conditions are not possible, save the last 64KB of decoded data into a safe buffer, + and indicate where it is saved using LZ4_setStreamDecode() </p></pre><BR> <pre><b>int LZ4_decompress_safe_usingDict (const char* source, char* dest, int compressedSize, int maxDecompressedSize, const char* dictStart, int dictSize); @@ -321,5 +321,9 @@ union LZ4_streamDecode_u { Otherwise, it's also possible to define LZ4_DISABLE_DEPRECATE_WARNINGS </p></pre><BR> +<h3>Experimental API section</h3><pre></pre><b><pre>#ifdef LZ4_HC_STATIC_LINKING_ONLY +#ifndef LZ4_SLO_299387928743 +#define LZ4_SLO_299387928743 +</pre></b><BR> </html> </body> |