delta_encoder.h File Reference

Delta filter encoder. More...

#include "delta_common.h"

Go to the source code of this file.

Functions
lzma_ret	lzma_delta_encoder_init (lzma_next_coder *next, const lzma_allocator *allocator, const lzma_filter_info *filters)
lzma_ret	lzma_delta_props_encode (const void *options, uint8_t *out)

Detailed Description

Delta filter encoder.

Definition in file delta_encoder.h.

Function Documentation

lzma_delta_encoder_init()

lzma_ret lzma_delta_encoder_init	(	lzma_next_coder *	next,
		const lzma_allocator *	allocator,
		const lzma_filter_info *	filters
	)

Definition at line 104 of file delta_encoder.c.

{
    next->code = &delta_encode;
    next->update = &delta_encoder_update;
    return lzma_delta_coder_init(next, allocator, filters);
}

References allocator, lzma_next_coder_s::code, delta_encode(), delta_encoder_update(), filters, lzma_delta_coder_init(), and lzma_next_coder_s::update.

lzma_delta_props_encode()

lzma_ret lzma_delta_props_encode	(	const void *	options,
		uint8_t *	out
	)

Definition at line 114 of file delta_encoder.c.

{
    // The caller must have already validated the options, so it's
    // LZMA_PROG_ERROR if they are invalid.
    if (lzma_delta_coder_memusage(options) == UINT64_MAX)
        return LZMA_PROG_ERROR;
 
    const lzma_options_delta *opt = options;
    out[0] = opt->dist - LZMA_DELTA_DIST_MIN;
 
    return LZMA_OK;
}

References lzma_options_delta::dist, lzma_delta_coder_memusage(), LZMA_DELTA_DIST_MIN, LZMA_OK, LZMA_PROG_ERROR, options, out, and UINT64_MAX.