aboutsummaryrefslogtreecommitdiffstats
path: root/contrib/libs/lzmasdk/LzmaLib.h
diff options
context:
space:
mode:
authorAnton Samokhvalov <pg83@yandex.ru>2022-02-10 16:45:17 +0300
committerDaniil Cherednik <dcherednik@yandex-team.ru>2022-02-10 16:45:17 +0300
commitd3a398281c6fd1d3672036cb2d63f842d2cb28c5 (patch)
treedd4bd3ca0f36b817e96812825ffaf10d645803f2 /contrib/libs/lzmasdk/LzmaLib.h
parent72cb13b4aff9bc9cf22e49251bc8fd143f82538f (diff)
downloadydb-d3a398281c6fd1d3672036cb2d63f842d2cb28c5.tar.gz
Restoring authorship annotation for Anton Samokhvalov <pg83@yandex.ru>. Commit 2 of 2.
Diffstat (limited to 'contrib/libs/lzmasdk/LzmaLib.h')
-rw-r--r--contrib/libs/lzmasdk/LzmaLib.h260
1 files changed, 130 insertions, 130 deletions
diff --git a/contrib/libs/lzmasdk/LzmaLib.h b/contrib/libs/lzmasdk/LzmaLib.h
index d4afea8393..88fa87d350 100644
--- a/contrib/libs/lzmasdk/LzmaLib.h
+++ b/contrib/libs/lzmasdk/LzmaLib.h
@@ -1,131 +1,131 @@
-/* LzmaLib.h -- LZMA library interface
-2013-01-18 : Igor Pavlov : Public domain */
-
-#ifndef __LZMA_LIB_H
-#define __LZMA_LIB_H
-
-#include "7zTypes.h"
-
-EXTERN_C_BEGIN
-
-#define MY_STDAPI int MY_STD_CALL
-
-#define LZMA_PROPS_SIZE 5
-
-/*
-RAM requirements for LZMA:
- for compression: (dictSize * 11.5 + 6 MB) + state_size
- for decompression: dictSize + state_size
- state_size = (4 + (1.5 << (lc + lp))) KB
- by default (lc=3, lp=0), state_size = 16 KB.
-
-LZMA properties (5 bytes) format
- Offset Size Description
- 0 1 lc, lp and pb in encoded form.
- 1 4 dictSize (little endian).
-*/
-
-/*
-LzmaCompress
-------------
-
-outPropsSize -
- In: the pointer to the size of outProps buffer; *outPropsSize = LZMA_PROPS_SIZE = 5.
- Out: the pointer to the size of written properties in outProps buffer; *outPropsSize = LZMA_PROPS_SIZE = 5.
-
- LZMA Encoder will use defult values for any parameter, if it is
- -1 for any from: level, loc, lp, pb, fb, numThreads
- 0 for dictSize
-
-level - compression level: 0 <= level <= 9;
-
- level dictSize algo fb
- 0: 16 KB 0 32
- 1: 64 KB 0 32
- 2: 256 KB 0 32
- 3: 1 MB 0 32
- 4: 4 MB 0 32
- 5: 16 MB 1 32
- 6: 32 MB 1 32
- 7+: 64 MB 1 64
+/* LzmaLib.h -- LZMA library interface
+2013-01-18 : Igor Pavlov : Public domain */
+
+#ifndef __LZMA_LIB_H
+#define __LZMA_LIB_H
+
+#include "7zTypes.h"
+
+EXTERN_C_BEGIN
+
+#define MY_STDAPI int MY_STD_CALL
+
+#define LZMA_PROPS_SIZE 5
+
+/*
+RAM requirements for LZMA:
+ for compression: (dictSize * 11.5 + 6 MB) + state_size
+ for decompression: dictSize + state_size
+ state_size = (4 + (1.5 << (lc + lp))) KB
+ by default (lc=3, lp=0), state_size = 16 KB.
+
+LZMA properties (5 bytes) format
+ Offset Size Description
+ 0 1 lc, lp and pb in encoded form.
+ 1 4 dictSize (little endian).
+*/
+
+/*
+LzmaCompress
+------------
+
+outPropsSize -
+ In: the pointer to the size of outProps buffer; *outPropsSize = LZMA_PROPS_SIZE = 5.
+ Out: the pointer to the size of written properties in outProps buffer; *outPropsSize = LZMA_PROPS_SIZE = 5.
+
+ LZMA Encoder will use defult values for any parameter, if it is
+ -1 for any from: level, loc, lp, pb, fb, numThreads
+ 0 for dictSize
- The default value for "level" is 5.
-
- algo = 0 means fast method
- algo = 1 means normal method
-
-dictSize - The dictionary size in bytes. The maximum value is
- 128 MB = (1 << 27) bytes for 32-bit version
- 1 GB = (1 << 30) bytes for 64-bit version
- The default value is 16 MB = (1 << 24) bytes.
- It's recommended to use the dictionary that is larger than 4 KB and
- that can be calculated as (1 << N) or (3 << N) sizes.
-
-lc - The number of literal context bits (high bits of previous literal).
- It can be in the range from 0 to 8. The default value is 3.
- Sometimes lc=4 gives the gain for big files.
-
-lp - The number of literal pos bits (low bits of current position for literals).
- It can be in the range from 0 to 4. The default value is 0.
- The lp switch is intended for periodical data when the period is equal to 2^lp.
- For example, for 32-bit (4 bytes) periodical data you can use lp=2. Often it's
- better to set lc=0, if you change lp switch.
-
-pb - The number of pos bits (low bits of current position).
- It can be in the range from 0 to 4. The default value is 2.
- The pb switch is intended for periodical data when the period is equal 2^pb.
-
-fb - Word size (the number of fast bytes).
- It can be in the range from 5 to 273. The default value is 32.
- Usually, a big number gives a little bit better compression ratio and
- slower compression process.
-
-numThreads - The number of thereads. 1 or 2. The default value is 2.
- Fast mode (algo = 0) can use only 1 thread.
-
-Out:
- destLen - processed output size
-Returns:
- SZ_OK - OK
- SZ_ERROR_MEM - Memory allocation error
- SZ_ERROR_PARAM - Incorrect paramater
- SZ_ERROR_OUTPUT_EOF - output buffer overflow
- SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version)
-*/
-
-MY_STDAPI LzmaCompress(unsigned char *dest, size_t *destLen, const unsigned char *src, size_t srcLen,
- unsigned char *outProps, size_t *outPropsSize, /* *outPropsSize must be = 5 */
- int level, /* 0 <= level <= 9, default = 5 */
- unsigned dictSize, /* default = (1 << 24) */
- int lc, /* 0 <= lc <= 8, default = 3 */
- int lp, /* 0 <= lp <= 4, default = 0 */
- int pb, /* 0 <= pb <= 4, default = 2 */
- int fb, /* 5 <= fb <= 273, default = 32 */
- int numThreads /* 1 or 2, default = 2 */
- );
-
-/*
-LzmaUncompress
---------------
-In:
- dest - output data
- destLen - output data size
- src - input data
- srcLen - input data size
-Out:
- destLen - processed output size
- srcLen - processed input size
-Returns:
- SZ_OK - OK
- SZ_ERROR_DATA - Data error
- SZ_ERROR_MEM - Memory allocation arror
- SZ_ERROR_UNSUPPORTED - Unsupported properties
- SZ_ERROR_INPUT_EOF - it needs more bytes in input buffer (src)
-*/
-
-MY_STDAPI LzmaUncompress(unsigned char *dest, size_t *destLen, const unsigned char *src, SizeT *srcLen,
- const unsigned char *props, size_t propsSize);
-
-EXTERN_C_END
-
-#endif
+level - compression level: 0 <= level <= 9;
+
+ level dictSize algo fb
+ 0: 16 KB 0 32
+ 1: 64 KB 0 32
+ 2: 256 KB 0 32
+ 3: 1 MB 0 32
+ 4: 4 MB 0 32
+ 5: 16 MB 1 32
+ 6: 32 MB 1 32
+ 7+: 64 MB 1 64
+
+ The default value for "level" is 5.
+
+ algo = 0 means fast method
+ algo = 1 means normal method
+
+dictSize - The dictionary size in bytes. The maximum value is
+ 128 MB = (1 << 27) bytes for 32-bit version
+ 1 GB = (1 << 30) bytes for 64-bit version
+ The default value is 16 MB = (1 << 24) bytes.
+ It's recommended to use the dictionary that is larger than 4 KB and
+ that can be calculated as (1 << N) or (3 << N) sizes.
+
+lc - The number of literal context bits (high bits of previous literal).
+ It can be in the range from 0 to 8. The default value is 3.
+ Sometimes lc=4 gives the gain for big files.
+
+lp - The number of literal pos bits (low bits of current position for literals).
+ It can be in the range from 0 to 4. The default value is 0.
+ The lp switch is intended for periodical data when the period is equal to 2^lp.
+ For example, for 32-bit (4 bytes) periodical data you can use lp=2. Often it's
+ better to set lc=0, if you change lp switch.
+
+pb - The number of pos bits (low bits of current position).
+ It can be in the range from 0 to 4. The default value is 2.
+ The pb switch is intended for periodical data when the period is equal 2^pb.
+
+fb - Word size (the number of fast bytes).
+ It can be in the range from 5 to 273. The default value is 32.
+ Usually, a big number gives a little bit better compression ratio and
+ slower compression process.
+
+numThreads - The number of thereads. 1 or 2. The default value is 2.
+ Fast mode (algo = 0) can use only 1 thread.
+
+Out:
+ destLen - processed output size
+Returns:
+ SZ_OK - OK
+ SZ_ERROR_MEM - Memory allocation error
+ SZ_ERROR_PARAM - Incorrect paramater
+ SZ_ERROR_OUTPUT_EOF - output buffer overflow
+ SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version)
+*/
+
+MY_STDAPI LzmaCompress(unsigned char *dest, size_t *destLen, const unsigned char *src, size_t srcLen,
+ unsigned char *outProps, size_t *outPropsSize, /* *outPropsSize must be = 5 */
+ int level, /* 0 <= level <= 9, default = 5 */
+ unsigned dictSize, /* default = (1 << 24) */
+ int lc, /* 0 <= lc <= 8, default = 3 */
+ int lp, /* 0 <= lp <= 4, default = 0 */
+ int pb, /* 0 <= pb <= 4, default = 2 */
+ int fb, /* 5 <= fb <= 273, default = 32 */
+ int numThreads /* 1 or 2, default = 2 */
+ );
+
+/*
+LzmaUncompress
+--------------
+In:
+ dest - output data
+ destLen - output data size
+ src - input data
+ srcLen - input data size
+Out:
+ destLen - processed output size
+ srcLen - processed input size
+Returns:
+ SZ_OK - OK
+ SZ_ERROR_DATA - Data error
+ SZ_ERROR_MEM - Memory allocation arror
+ SZ_ERROR_UNSUPPORTED - Unsupported properties
+ SZ_ERROR_INPUT_EOF - it needs more bytes in input buffer (src)
+*/
+
+MY_STDAPI LzmaUncompress(unsigned char *dest, size_t *destLen, const unsigned char *src, SizeT *srcLen,
+ const unsigned char *props, size_t propsSize);
+
+EXTERN_C_END
+
+#endif