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/*
* Copyright (c) 2004-2016 Maxim Sobolev <sobomax@FreeBSD.org>
* Copyright (c) 2011 Aleksandr Rybalko <ray@ddteam.net>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <err.h>
#include <stdint.h>
#include <lzma.h>
#include "mkuzip.h"
#include "mkuz_blk.h"
#include "mkuz_lzma.h"
struct mkuz_lzma {
lzma_filter filters[2];
lzma_options_lzma opt_lzma;
lzma_stream strm;
};
size_t
mkuz_lzma_cbound(size_t blksz)
{
return (lzma_stream_buffer_bound(blksz));
}
void *
mkuz_lzma_init(int *comp_level)
{
struct mkuz_lzma *ulp;
if (*comp_level == USE_DEFAULT_LEVEL)
*comp_level = LZMA_PRESET_DEFAULT;
if (*comp_level < 0 || *comp_level > 9)
errx(1, "provided compression level %d is invalid",
*comp_level);
/* Not reached */
ulp = mkuz_safe_zmalloc(sizeof(struct mkuz_lzma));
/* Init lzma encoder */
ulp->strm = (lzma_stream)LZMA_STREAM_INIT;
if (lzma_lzma_preset(&ulp->opt_lzma, *comp_level))
errx(1, "Error loading LZMA preset");
ulp->filters[0].id = LZMA_FILTER_LZMA2;
ulp->filters[0].options = &ulp->opt_lzma;
ulp->filters[1].id = LZMA_VLI_UNKNOWN;
return (void *)ulp;
}
void
mkuz_lzma_compress(void *p, const struct mkuz_blk *iblk, struct mkuz_blk *oblk)
{
lzma_ret ret;
struct mkuz_lzma *ulp;
ulp = (struct mkuz_lzma *)p;
ret = lzma_stream_encoder(&ulp->strm, ulp->filters, LZMA_CHECK_CRC32);
if (ret != LZMA_OK) {
if (ret == LZMA_MEMLIMIT_ERROR)
errx(1, "can't compress data: LZMA_MEMLIMIT_ERROR");
errx(1, "can't compress data: LZMA compressor ERROR");
}
ulp->strm.next_in = iblk->data;
ulp->strm.avail_in = iblk->info.len;
ulp->strm.next_out = oblk->data;
ulp->strm.avail_out = oblk->alen;
ret = lzma_code(&ulp->strm, LZMA_FINISH);
if (ret != LZMA_STREAM_END)
errx(1, "lzma_code FINISH failed, code=%d, pos(in=%zd, "
"out=%zd)", ret, (iblk->info.len - ulp->strm.avail_in),
(oblk->alen - ulp->strm.avail_out));
#if 0
lzma_end(&ulp->strm);
#endif
oblk->info.len = oblk->alen - ulp->strm.avail_out;
}
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