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Parolin 0.7.9 6796
Console (soon DLLs) to do a tar like job
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Parolin 0.7.9 6796
Console (soon DLLs) to do a tar like job
|
#include <lz_encoder.h>
Data Fields | |
| uint8_t * | buffer |
| Pointer to buffer with data to be compressed. | |
| uint32_t | size |
| uint32_t | keep_size_before |
| uint32_t | keep_size_after |
| uint32_t | offset |
| uint32_t | read_pos |
| uint32_t | read_ahead |
| uint32_t | read_limit |
| uint32_t | write_pos |
| uint32_t | pending |
| uint32_t(* | find )(lzma_mf *mf, lzma_match *matches) |
| void(* | skip )(lzma_mf *mf, uint32_t num) |
| uint32_t * | hash |
| uint32_t * | son |
| uint32_t | cyclic_pos |
| uint32_t | cyclic_size |
| uint32_t | hash_mask |
| uint32_t | depth |
| Maximum number of loops in the match finder. | |
| uint32_t | nice_len |
| Maximum length of a match that the match finder will try to find. | |
| uint32_t | match_len_max |
| lzma_action | action |
| uint32_t | hash_count |
| Number of elements in hash[]. | |
| uint32_t | sons_count |
| Number of elements in son[]. | |
| lzma_action action |
When running out of input, binary tree match finders need to know if it is due to flushing or finishing. The action is used also by the LZ-based encoders themselves.
| uint8_t * buffer |
Pointer to buffer with data to be compressed.
| uint32_t cyclic_pos |
| uint32_t cyclic_size |
| uint32_t depth |
Maximum number of loops in the match finder.
| uint32_t(* find)(lzma_mf *mf, lzma_match *matches) |
Find matches. Returns the number of distance-length pairs written to the matches array. This is called only via lzma_mf_find().
| uint32_t * hash |
| uint32_t hash_count |
Number of elements in hash[].
| uint32_t hash_mask |
| uint32_t keep_size_after |
Number of bytes that must be kept in buffer after read_pos. That is, read_pos <= write_pos - keep_size_after as long as action is LZMA_RUN; when action != LZMA_RUN, read_pos is allowed to reach write_pos so that the last bytes get encoded too.
| uint32_t keep_size_before |
Number of bytes that must be kept available in our input history. That is, once keep_size_before bytes have been processed, buffer[read_pos - keep_size_before] is the oldest byte that must be available for reading.
| uint32_t match_len_max |
Maximum length of a match supported by the LZ-based encoder. If the longest match found by the match finder is nice_len, mf_find() tries to expand it up to match_len_max bytes.
| uint32_t nice_len |
Maximum length of a match that the match finder will try to find.
| uint32_t offset |
Match finders store locations of matches using 32-bit integers. To avoid adjusting several megabytes of integers every time the input window is moved with move_window, we only adjust the offset of the buffer. Thus, buffer[value_in_hash_table - offset] is the byte pointed by value_in_hash_table.
| uint32_t pending |
Number of bytes not hashed before read_pos. This is needed to restart the match finder after LZMA_SYNC_FLUSH.
| uint32_t read_ahead |
Number of bytes that have been ran through the match finder, but which haven't been encoded by the LZ-based encoder yet.
| uint32_t read_limit |
As long as read_pos is less than read_limit, there is enough input available in buffer for at least one encoding loop.
Because of the stateful API, read_limit may and will get greater than read_pos quite often. This is taken into account when calculating the value for keep_size_after.
| uint32_t read_pos |
buffer[read_pos] is the next byte to run through the match finder. This is incremented in the match finder once the byte has been processed.
| uint32_t size |
Total size of the allocated buffer (that is, including all the extra space)
| void(* skip)(lzma_mf *mf, uint32_t num) |
Skips num bytes. This is like find() but doesn't make the distance-length pairs available, thus being a little faster. This is called only via mf_skip().
| uint32_t * son |
| uint32_t sons_count |
Number of elements in son[].
| uint32_t write_pos |
buffer[write_pos] is the first byte that doesn't contain valid uncompressed data; that is, the next input byte will be copied to buffer[write_pos].
1.12.0