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3b34851de1
broken. API has changed a lot and it will still change a little more here and there. The command line tool doesn't have all the required changes to reflect the API changes, so it's easy to get "internal error" or trigger assertions.
141 lines
3.6 KiB
C
141 lines
3.6 KiB
C
///////////////////////////////////////////////////////////////////////////////
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//
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/// \file sync_flush.c
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/// \brief Encode files using LZMA_SYNC_FLUSH
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//
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// Copyright (C) 2008 Lasse Collin
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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///////////////////////////////////////////////////////////////////////////////
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#include "sysdefs.h"
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#include <stdio.h>
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static lzma_stream strm = LZMA_STREAM_INIT;
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static FILE *file_in;
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static void
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encode(size_t size, lzma_action action)
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{
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static const size_t CHUNK = 64;
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uint8_t in[CHUNK];
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uint8_t out[CHUNK];
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lzma_ret ret;
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do {
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if (strm.avail_in == 0 && size > 0) {
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const size_t amount = MIN(size, CHUNK);
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strm.avail_in = fread(in, 1, amount, file_in);
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strm.next_in = in;
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size -= amount; // Intentionally not using avail_in.
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}
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strm.next_out = out;
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strm.avail_out = CHUNK;
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ret = lzma_code(&strm, size == 0 ? action : LZMA_RUN);
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if (ret != LZMA_OK && ret != LZMA_STREAM_END) {
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fprintf(stderr, "%s:%u: %s: ret == %d\n",
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__FILE__, __LINE__, __func__, ret);
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exit(1);
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}
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fwrite(out, 1, CHUNK - strm.avail_out, stdout);
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} while (size > 0 || strm.avail_out == 0);
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if ((action == LZMA_RUN && ret != LZMA_OK)
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|| (action != LZMA_RUN && ret != LZMA_STREAM_END)) {
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fprintf(stderr, "%s:%u: %s: ret == %d\n",
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__FILE__, __LINE__, __func__, ret);
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exit(1);
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}
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}
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int
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main(int argc, char **argv)
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{
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lzma_init_encoder();
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file_in = argc > 1 ? fopen(argv[1], "rb") : stdin;
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// Config
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lzma_options_lzma opt_lzma = {
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.dictionary_size = 1 << 16,
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.literal_context_bits = LZMA_LITERAL_CONTEXT_BITS_DEFAULT,
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.literal_pos_bits = LZMA_LITERAL_POS_BITS_DEFAULT,
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.pos_bits = LZMA_POS_BITS_DEFAULT,
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.preset_dictionary = NULL,
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.persistent = true,
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.mode = LZMA_MODE_NORMAL,
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.fast_bytes = 32,
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.match_finder = LZMA_MF_HC3,
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.match_finder_cycles = 0,
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};
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lzma_options_delta opt_delta = {
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.distance = 16
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};
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lzma_options_subblock opt_subblock = {
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.allow_subfilters = true,
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.alignment = 8, // LZMA_SUBBLOCK_ALIGNMENT_DEFAULT,
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.subblock_data_size = LZMA_SUBBLOCK_DATA_SIZE_DEFAULT,
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.rle = 1, // LZMA_SUBBLOCK_RLE_OFF,
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.subfilter_mode = LZMA_SUBFILTER_SET,
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};
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opt_subblock.subfilter_options.id = LZMA_FILTER_LZMA;
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opt_subblock.subfilter_options.options = &opt_lzma;
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opt_subblock.subfilter_options.id = LZMA_FILTER_DELTA;
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opt_subblock.subfilter_options.options = &opt_delta;
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lzma_filter filters[LZMA_BLOCK_FILTERS_MAX + 1];
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filters[0].id = LZMA_FILTER_LZMA2;
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filters[0].options = &opt_lzma;
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filters[1].id = LZMA_VLI_VALUE_UNKNOWN;
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// Init
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if (lzma_stream_encoder(&strm, filters, LZMA_CHECK_CRC32) != LZMA_OK) {
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fprintf(stderr, "init failed\n");
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exit(1);
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}
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// Encoding
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/*
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encode(0, LZMA_SYNC_FLUSH);
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encode(6, LZMA_SYNC_FLUSH);
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encode(0, LZMA_SYNC_FLUSH);
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encode(7, LZMA_SYNC_FLUSH);
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encode(0, LZMA_SYNC_FLUSH);
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encode(0, LZMA_FINISH);
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*/
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encode(53, LZMA_SYNC_FLUSH);
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// opt_lzma.literal_context_bits = 2;
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// opt_lzma.literal_pos_bits = 1;
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// opt_lzma.pos_bits = 0;
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encode(404, LZMA_FINISH);
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// Clean up
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lzma_end(&strm);
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return 0;
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// Prevent useless warnings so we don't need to have special CFLAGS
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// to disable -Werror.
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(void)opt_lzma;
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(void)opt_subblock;
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(void)opt_delta;
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}
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