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51 lines
1.9 KiB
51 lines
1.9 KiB
#ifndef MUPDF_FITZ_COMPRESS_H
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#define MUPDF_FITZ_COMPRESS_H
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#include "mupdf/fitz/system.h"
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typedef enum
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{
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FZ_DEFLATE_NONE = 0,
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FZ_DEFLATE_BEST_SPEED = 1,
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FZ_DEFLATE_BEST = 9,
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FZ_DEFLATE_DEFAULT = -1
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} fz_deflate_level;
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/*
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fz_deflate_bound: Returns the upper bound on the
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size of flated data of length size.
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*/
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size_t fz_deflate_bound(fz_context *ctx, size_t size);
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/*
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fz_deflate: Compress source_length bytes of data starting
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at source, into a buffer of length *destLen, starting at dest.
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*compressed_length will be updated on exit to contain the size
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actually used.
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*/
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void fz_deflate(fz_context *ctx, unsigned char *dest, size_t *compressed_length, const unsigned char *source, size_t source_length, fz_deflate_level level);
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/*
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fz_new_deflated_data: Compress source_length bytes of data starting
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at source, into a new memory block malloced for that purpose.
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*compressed_length is updated on exit to contain the size used.
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Ownership of the block is returned from this function, and the
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caller is therefore responsible for freeing it. The block may be
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considerably larger than is actually required. The caller is
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free to fz_realloc it down if it wants to.
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*/
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unsigned char *fz_new_deflated_data(fz_context *ctx, size_t *compressed_length, const unsigned char *source, size_t source_length, fz_deflate_level level);
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/*
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fz_new_deflated_data_from_buffer: Compress the contents of a fz_buffer into a
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new block malloced for that purpose. *compressed_length is updated
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on exit to contain the size used. Ownership of the block is
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returned from this function, and the caller is therefore responsible
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for freeing it. The block may be considerably larger than is
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actually required. The caller is free to fz_realloc it down if it
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wants to.
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*/
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unsigned char *fz_new_deflated_data_from_buffer(fz_context *ctx, size_t *compressed_length, fz_buffer *buffer, fz_deflate_level level);
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#endif
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