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Restored : lz4 compression function using externally allocated memory for state

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This commit is contained in:
Yann Collet 2014-07-20 13:34:14 +01:00
parent 2f93f3afd5
commit 1870d48fc8
1 changed files with 12 additions and 6 deletions
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18
lz4.h
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@ -72,7 +72,7 @@ LZ4_compress() :
Destination buffer must be already allocated,
and must be sized to handle worst cases situations (input data not compressible)
Worst case size evaluation is provided by function LZ4_compressBound()
inputSize : Max supported value is LZ4_MAX_INPUT_VALUE
inputSize : Max supported value is LZ4_MAX_INPUT_SIZE
return : the number of bytes written in buffer dest
or 0 if the compression fails
@ -128,6 +128,17 @@ LZ4_compress_limitedOutput() :
int LZ4_compress_limitedOutput (const char* source, char* dest, int inputSize, int maxOutputSize);
/*
LZ4_compress_withState() :
Same compression functions, but using an externally allocated memory space to store compression state.
Use LZ4_sizeofState() to know how much memory must be allocated,
and then, provide it as 'void* state' to compression functions.
*/
int LZ4_sizeofState(void);
int LZ4_compress_withState (void* state, const char* source, char* dest, int inputSize);
int LZ4_compress_limitedOutput_withState (void* state, const char* source, char* dest, int inputSize, int maxOutputSize);
/*
LZ4_decompress_fast() :
originalSize : is the original and therefore uncompressed size
@ -289,11 +300,6 @@ It is highly recommended to stop using these functions and migrated to newer one
/* int LZ4_uncompress (const char* source, char* dest, int outputSize); */
/* int LZ4_uncompress_unknownOutputSize (const char* source, char* dest, int isize, int maxOutputSize); */
/* Obsolete functions for externally allocated state; use streaming interface instead */
int LZ4_sizeofState(void);
int LZ4_compress_withState (void* state, const char* source, char* dest, int inputSize);
int LZ4_compress_limitedOutput_withState (void* state, const char* source, char* dest, int inputSize, int maxOutputSize);
/*
* If you prefer dynamic allocation methods,
* LZ4_createStreamDecode()