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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2010-03-26 16:06:23 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2010-03-30 14:14:58 +0200 |
| commit | 6d079ae2cadfd6c0c2916409ff43bbf8e452255e (patch) | |
| tree | 4c7e4828a8e49bac5892c25b6ad1d4719a0fee7c /include | |
| parent | 3348c8199235cacaf6ca56d277a9cbf1ab2c5d0a (diff) | |
| download | barebox-6d079ae2cadfd6c0c2916409ff43bbf8e452255e.tar.gz barebox-6d079ae2cadfd6c0c2916409ff43bbf8e452255e.tar.xz | |
add unlzo support
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/lzo.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/include/lzo.h b/include/lzo.h new file mode 100644 index 0000000000..569498596e --- /dev/null +++ b/include/lzo.h @@ -0,0 +1,46 @@ +#ifndef __LZO_H__ +#define __LZO_H__ +/* + * LZO Public Kernel Interface + * A mini subset of the LZO real-time data compression library + * + * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus@oberhumer.com> + * + * The full LZO package can be found at: + * http://www.oberhumer.com/opensource/lzo/ + * + * Changed for kernel use by: + * Nitin Gupta <nitingupta910@gmail.com> + * Richard Purdie <rpurdie@openedhand.com> + */ + +#define LZO1X_MEM_COMPRESS (16384 * sizeof(unsigned char *)) +#define LZO1X_1_MEM_COMPRESS LZO1X_MEM_COMPRESS + +#define lzo1x_worst_compress(x) ((x) + ((x) / 16) + 64 + 3) + +/* This requires 'workmem' of size LZO1X_1_MEM_COMPRESS */ +int lzo1x_1_compress(const unsigned char *src, size_t src_len, + unsigned char *dst, size_t *dst_len, void *wrkmem); + +/* safe decompression with overrun testing */ +int lzo1x_decompress_safe(const unsigned char *src, size_t src_len, + unsigned char *dst, size_t *dst_len); + +/* + * Return values (< 0 = Error) + */ +#define LZO_E_OK 0 +#define LZO_E_ERROR (-1) +#define LZO_E_OUT_OF_MEMORY (-2) +#define LZO_E_NOT_COMPRESSIBLE (-3) +#define LZO_E_INPUT_OVERRUN (-4) +#define LZO_E_OUTPUT_OVERRUN (-5) +#define LZO_E_LOOKBEHIND_OVERRUN (-6) +#define LZO_E_EOF_NOT_FOUND (-7) +#define LZO_E_INPUT_NOT_CONSUMED (-8) +#define LZO_E_NOT_YET_IMPLEMENTED (-9) + +int unlzo(int in_fd, int out_fd, int *dest_len); + +#endif |