lz4.c File Reference

LZ4 compression. More...

#include "config.h"
#include <stddef.h>
#include <limits.h>
#include <lz4.h>
#include "private.h"
#include "mutt/lib.h"
#include "lib.h"

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Data Structures
struct	Lz4ComprData
	Private Lz4 Compression Data. More...

Macros
#define	MIN_COMP_LEVEL   1
	Minimum compression level for lz4.
#define	MAX_COMP_LEVEL   12
	Maximum compression level for lz4.

Functions
void	lz4_cdata_free (struct Lz4ComprData **ptr)
	Free Lz4 Compression Data.
static struct Lz4ComprData *	lz4_cdata_new (void)
	Create new Lz4 Compression Data.
static ComprHandle *	compr_lz4_open (short level)
	Open a compression context - Implements ComprOps::open() -.
static void *	compr_lz4_compress (ComprHandle *handle, const char *data, size_t dlen, size_t *clen)
	Compress header cache data - Implements ComprOps::compress() -.
static void *	compr_lz4_decompress (ComprHandle *handle, const char *cbuf, size_t clen)
	Decompress header cache data - Implements ComprOps::decompress() -.
static void	compr_lz4_close (ComprHandle **ptr)
	Close a compression context - Implements ComprOps::close() -.

Detailed Description

LZ4 compression.

Authors

• Tino Reichardt
• Pietro Cerutti
• Richard Russon

Copyright

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Definition in file lz4.c.

Macro Definition Documentation

MIN_COMP_LEVEL

#define MIN_COMP_LEVEL   1

Minimum compression level for lz4.

Definition at line 40 of file lz4.c.

MAX_COMP_LEVEL

#define MAX_COMP_LEVEL   12

Maximum compression level for lz4.

Definition at line 41 of file lz4.c.

Function Documentation

lz4_cdata_free()

void lz4_cdata_free

(

struct Lz4ComprData **

ptr

)

Free Lz4 Compression Data.

Parameters

ptr	Lz4 Compression Data to free

Definition at line 56 of file lz4.c.

{
  if (!ptr || !*ptr)
    return;
 
  struct Lz4ComprData *cdata = *ptr;
  FREE(&cdata->buf);
 
  FREE(ptr);
}

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lz4_cdata_new()

static struct Lz4ComprData * lz4_cdata_new ( void  )

static

Create new Lz4 Compression Data.

Return values

ptr	New Lz4 Compression Data

Definition at line 71 of file lz4.c.

{
  return mutt_mem_calloc(1, sizeof(struct Lz4ComprData));
}

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