5213c53f6f
Currently cbfs stage files that are compressed do not have the decompressed size readily available. Therefore there's no good way to know actual size of data after it is decompressed. Optionally return the decompressed data size if requested. Change-Id: If371753d28d0ff512118d8bc06fdd48f4a0aeae7 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/12173 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
/*
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* compression handling for cbfstool
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*
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* Copyright (C) 2009 coresystems GmbH
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* written by Patrick Georgi <patrick.georgi@coresystems.de>
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*
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* Adapted from code
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* Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>, released
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* under identical license terms
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc.
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*/
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#include <string.h>
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#include <stdio.h>
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#include "common.h"
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static int lzma_compress(char *in, int in_len, char *out, int *out_len)
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{
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return do_lzma_compress(in, in_len, out, out_len);
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}
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static int lzma_decompress(char *in, int in_len, char *out, unused int out_len,
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size_t *actual_size)
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{
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return do_lzma_uncompress(out, out_len, in, in_len, actual_size);
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}
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static int none_compress(char *in, int in_len, char *out, int *out_len)
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{
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memcpy(out, in, in_len);
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*out_len = in_len;
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return 0;
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}
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static int none_decompress(char *in, int in_len, char *out, unused int out_len,
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size_t *actual_size)
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{
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memcpy(out, in, in_len);
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if (actual_size != NULL)
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*actual_size = in_len;
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return 0;
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}
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comp_func_ptr compression_function(enum comp_algo algo)
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{
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comp_func_ptr compress;
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switch (algo) {
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case CBFS_COMPRESS_NONE:
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compress = none_compress;
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break;
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case CBFS_COMPRESS_LZMA:
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compress = lzma_compress;
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break;
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default:
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ERROR("Unknown compression algorithm %d!\n", algo);
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return NULL;
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}
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return compress;
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}
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decomp_func_ptr decompression_function(enum comp_algo algo)
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{
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decomp_func_ptr decompress;
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switch (algo) {
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case CBFS_COMPRESS_NONE:
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decompress = none_decompress;
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break;
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case CBFS_COMPRESS_LZMA:
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decompress = lzma_decompress;
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break;
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default:
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ERROR("Unknown compression algorithm %d!\n", algo);
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return NULL;
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}
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return decompress;
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}
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