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authorLuigi 'Comio' Mantellini <luigi.mantellini@idf-hit.com>2008-09-08 02:46:13 +0200
committerWolfgang Denk <wd@denx.de>2008-09-13 01:59:07 +0200
commitfc9c1727b5b3483ce49c3cb668e8332fb001b8a7 (patch)
tree4225e1899157c007aebc19d150f62be9f04d11de /lib_generic/lzma/LzmaTools.c
parent508eb85db7065e34948c189c83f7e348c1cfd61e (diff)
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Add support for LZMA uncompression algorithm.
Signed-off-by: Luigi 'Comio' Mantellini <luigi.mantellini@idf-hit.com> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Diffstat (limited to 'lib_generic/lzma/LzmaTools.c')
-rw-r--r--lib_generic/lzma/LzmaTools.c142
1 files changed, 142 insertions, 0 deletions
diff --git a/lib_generic/lzma/LzmaTools.c b/lib_generic/lzma/LzmaTools.c
new file mode 100644
index 0000000..5ac42e5
--- /dev/null
+++ b/lib_generic/lzma/LzmaTools.c
@@ -0,0 +1,142 @@
+/*
+ * Usefuls routines based on the LzmaTest.c file from LZMA SDK 4.57
+ *
+ * Copyright (C) 2007-2008 Industrie Dial Face S.p.A.
+ * Luigi 'Comio' Mantellini (luigi.mantellini@idf-hit.com)
+ *
+ * Copyright (C) 1999-2005 Igor Pavlov
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * LZMA_Alone stream format:
+ *
+ * uchar Properties[5]
+ * uint64 Uncompressed size
+ * uchar data[*]
+ *
+ */
+
+#include <config.h>
+#include <common.h>
+
+#ifdef CONFIG_LZMA
+
+#define LZMA_PROPERTIES_OFFSET 0
+#define LZMA_SIZE_OFFSET LZMA_PROPERTIES_SIZE
+#define LZMA_DATA_OFFSET LZMA_SIZE_OFFSET+sizeof(uint64_t)
+
+#include "LzmaTools.h"
+#include "LzmaDecode.h"
+
+#include <linux/string.h>
+#include <malloc.h>
+
+int lzmaBuffToBuffDecompress (unsigned char *outStream, SizeT *uncompressedSize,
+ unsigned char *inStream, SizeT length)
+{
+ int res = LZMA_RESULT_DATA_ERROR;
+ int i;
+
+ SizeT outSizeFull = 0xFFFFFFFF; /* 4GBytes limit */
+ SizeT inProcessed;
+ SizeT outProcessed;
+ SizeT outSize;
+ SizeT outSizeHigh;
+ CLzmaDecoderState state; /* it's about 24-80 bytes structure, if int is 32-bit */
+ unsigned char properties[LZMA_PROPERTIES_SIZE];
+ SizeT compressedSize = (SizeT)(length - LZMA_DATA_OFFSET);
+
+ debug ("LZMA: Image address............... 0x%lx\n", inStream);
+ debug ("LZMA: Properties address.......... 0x%lx\n", inStream + LZMA_PROPERTIES_OFFSET);
+ debug ("LZMA: Uncompressed size address... 0x%lx\n", inStream + LZMA_SIZE_OFFSET);
+ debug ("LZMA: Compressed data address..... 0x%lx\n", inStream + LZMA_DATA_OFFSET);
+ debug ("LZMA: Destination address......... 0x%lx\n", outStream);
+
+ memcpy(properties, inStream + LZMA_PROPERTIES_OFFSET, LZMA_PROPERTIES_SIZE);
+
+ memset(&state, 0, sizeof(state));
+ res = LzmaDecodeProperties(&state.Properties,
+ properties,
+ LZMA_PROPERTIES_SIZE);
+ if (res != LZMA_RESULT_OK) {
+ return res;
+ }
+
+ outSize = 0;
+ outSizeHigh = 0;
+ /* Read the uncompressed size */
+ for (i = 0; i < 8; i++) {
+ unsigned char b = inStream[LZMA_SIZE_OFFSET + i];
+ if (i < 4) {
+ outSize += (UInt32)(b) << (i * 8);
+ } else {
+ outSizeHigh += (UInt32)(b) << ((i - 4) * 8);
+ }
+ }
+
+ outSizeFull = (SizeT)outSize;
+ if (sizeof(SizeT) >= 8) {
+ /*
+ * SizeT is a 64 bit uint => We can manage files larger than 4GB!
+ *
+ */
+ outSizeFull |= (((SizeT)outSizeHigh << 16) << 16);
+ } else if (outSizeHigh != 0 || (UInt32)(SizeT)outSize != outSize) {
+ /*
+ * SizeT is a 32 bit uint => We cannot manage files larger than
+ * 4GB!
+ *
+ */
+ debug ("LZMA: 64bit support not enabled.\n");
+ return LZMA_RESULT_DATA_ERROR;
+ }
+
+ debug ("LZMA: Uncompresed size............ 0x%lx\n", outSizeFull);
+ debug ("LZMA: Compresed size.............. 0x%lx\n", compressedSize);
+ debug ("LZMA: Dynamic memory needed....... 0x%lx", LzmaGetNumProbs(&state.Properties) * sizeof(CProb));
+
+ state.Probs = (CProb *)malloc(LzmaGetNumProbs(&state.Properties) * sizeof(CProb));
+
+ if (state.Probs == 0
+ || (outStream == 0 && outSizeFull != 0)
+ || (inStream == 0 && compressedSize != 0)) {
+ free(state.Probs);
+ debug ("\n");
+ return LZMA_RESULT_DATA_ERROR;
+ }
+
+ debug (" allocated.\n");
+
+ /* Decompress */
+
+ res = LzmaDecode(&state,
+ inStream + LZMA_DATA_OFFSET, compressedSize, &inProcessed,
+ outStream, outSizeFull, &outProcessed);
+ if (res != LZMA_RESULT_OK) {
+ return res;
+ }
+
+ *uncompressedSize = outProcessed;
+ free(state.Probs);
+ return res;
+}
+
+#endif