mirror of https://github.com/vasi/pixz
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
#include <lzma.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdbool.h>
|
|
|
|
|
|
typedef int fixme_err;
|
|
|
|
void pixz_die(const char *fmt, ...);
|
|
|
|
void pixz_offset_write(uint64_t n, uint8_t *buf);
|
|
uint64_t pixz_offset_read(uint8_t *buf);
|
|
|
|
/***** BLOCK *****/
|
|
|
|
typedef struct {
|
|
uint8_t *ibuf, *obuf;
|
|
size_t isize;
|
|
|
|
lzma_block block;
|
|
lzma_stream stream;
|
|
} pixz_block;
|
|
|
|
|
|
pixz_block *pixz_block_new(size_t size, lzma_check check, lzma_filter *filters);
|
|
void pixz_block_free(pixz_block *b);
|
|
|
|
bool pixz_block_full(pixz_block *b);
|
|
size_t pixz_block_new_input_avail(pixz_block *b);
|
|
uint8_t *pixz_block_new_input_next(pixz_block *b);
|
|
void pixz_block_new_input(pixz_block *b, size_t bytes);
|
|
|
|
uint8_t *pixz_block_coded_data(pixz_block *b);
|
|
size_t pixz_block_coded_size(pixz_block *b);
|
|
|
|
fixme_err pixz_block_encode(pixz_block *b, size_t bytes);
|
|
fixme_err pixz_block_encode_all(pixz_block *b);
|
|
|
|
fixme_err pixz_block_index_append(pixz_block *b, lzma_index *index);
|
|
|
|
|
|
/***** ENCODE *****/
|
|
|
|
typedef struct {
|
|
size_t chunksize; // read quantum
|
|
size_t blocksize; // encode quantum
|
|
lzma_check check;
|
|
lzma_filter *filters;
|
|
} pixz_encode_options;
|
|
|
|
pixz_encode_options *pixz_encode_options_new();
|
|
fixme_err pixz_encode_options_default(pixz_encode_options *opts);
|
|
void pixz_encode_options_free(pixz_encode_options *opts);
|
|
|
|
void pixz_encode_initialize_block(lzma_block *b, lzma_check check,
|
|
lzma_filter *filters);
|
|
|
|
fixme_err pixz_encode_block_header(lzma_block *b, uint8_t *buf, size_t avail);
|
|
fixme_err pixz_encode_block(FILE *infile, FILE *outfile, pixz_encode_options *opts,
|
|
lzma_index *index);
|
|
fixme_err pixz_encode_stream_header(FILE *outfile, pixz_encode_options *opts);
|
|
fixme_err pixz_encode_stream_footer(FILE *outfile, pixz_encode_options *opts,
|
|
lzma_index *index);
|
|
fixme_err pixz_encode_index(FILE *outfile, pixz_encode_options *opts, lzma_index *index);
|
|
|
|
fixme_err pixz_encode_file(FILE *infile, FILE *outfile, pixz_encode_options *opts);
|
|
|
|
|
|
/***** INDEX *****/
|
|
|
|
typedef struct pixz_index_record pixz_index_record;
|
|
struct pixz_index_record {
|
|
size_t offset;
|
|
char *name;
|
|
pixz_index_record *next;
|
|
};
|
|
|
|
typedef struct {
|
|
pixz_index_record *first;
|
|
pixz_index_record *last;
|
|
|
|
size_t last_offset;
|
|
bool have_last_offset;
|
|
} pixz_index;
|
|
|
|
pixz_index *pixz_index_new(void);
|
|
void pixz_index_free(pixz_index *i);
|
|
|
|
void pixz_index_add(pixz_index *i, size_t offset, const char *name);
|
|
void pixz_index_finish(pixz_index *i, size_t offset);
|
|
|
|
void pixz_index_dump(pixz_index *i, FILE *out);
|
|
|
|
fixme_err pixz_index_write(pixz_index *i, FILE *out, pixz_encode_options *opts);
|
|
fixme_err pixz_index_read_in_place(pixz_index **i, FILE *in, lzma_check check);
|
|
fixme_err pixz_index_read(pixz_index **i, FILE *in, lzma_check check);
|
|
|