2013-03-11 17:46:03 +00:00
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/* This file is part of libmspack.
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* (C) 2003-2004 Stuart Caie.
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*
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* libmspack is free software; you can redistribute it and/or modify it under
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* the terms of the GNU Lesser General Public License (LGPL) version 2.1
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*
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* For further details, see the file COPYING.LIB distributed with libmspack
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*/
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#ifndef MSPACK_CHM_H
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#define MSPACK_CHM_H 1
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2013-03-11 17:51:11 +00:00
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#include "lzx.h"
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2013-03-11 17:46:03 +00:00
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/* generic CHM definitions */
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#define chmhead_Signature (0x0000)
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#define chmhead_Version (0x0004)
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#define chmhead_HeaderLen (0x0008)
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#define chmhead_Unknown1 (0x000C)
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#define chmhead_Timestamp (0x0010)
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#define chmhead_LanguageID (0x0014)
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#define chmhead_GUID1 (0x0018)
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#define chmhead_GUID2 (0x0028)
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#define chmhead_SIZEOF (0x0038)
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#define chmhst_OffsetHS0 (0x0000)
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#define chmhst_LengthHS0 (0x0008)
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#define chmhst_OffsetHS1 (0x0010)
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#define chmhst_LengthHS1 (0x0018)
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#define chmhst_SIZEOF (0x0020)
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#define chmhst3_OffsetCS0 (0x0020)
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#define chmhst3_SIZEOF (0x0028)
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#define chmhs0_Unknown1 (0x0000)
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#define chmhs0_Unknown2 (0x0004)
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#define chmhs0_FileLen (0x0008)
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#define chmhs0_Unknown3 (0x0010)
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#define chmhs0_Unknown4 (0x0014)
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#define chmhs0_SIZEOF (0x0018)
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#define chmhs1_Signature (0x0000)
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#define chmhs1_Version (0x0004)
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#define chmhs1_HeaderLen (0x0008)
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#define chmhs1_Unknown1 (0x000C)
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#define chmhs1_ChunkSize (0x0010)
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#define chmhs1_Density (0x0014)
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#define chmhs1_Depth (0x0018)
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#define chmhs1_IndexRoot (0x001C)
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#define chmhs1_FirstPMGL (0x0020)
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#define chmhs1_LastPMGL (0x0024)
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#define chmhs1_Unknown2 (0x0028)
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#define chmhs1_NumChunks (0x002C)
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#define chmhs1_LanguageID (0x0030)
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#define chmhs1_GUID (0x0034)
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#define chmhs1_Unknown3 (0x0044)
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#define chmhs1_Unknown4 (0x0048)
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#define chmhs1_Unknown5 (0x004C)
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#define chmhs1_Unknown6 (0x0050)
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#define chmhs1_SIZEOF (0x0054)
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#define pmgl_Signature (0x0000)
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#define pmgl_QuickRefSize (0x0004)
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#define pmgl_Unknown1 (0x0008)
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#define pmgl_PrevChunk (0x000C)
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#define pmgl_NextChunk (0x0010)
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#define pmgl_Entries (0x0014)
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#define pmgl_headerSIZEOF (0x0014)
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#define pmgi_Signature (0x0000)
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#define pmgi_QuickRefSize (0x0004)
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#define pmgi_Entries (0x0008)
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#define pmgi_headerSIZEOF (0x000C)
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#define lzxcd_Length (0x0000)
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#define lzxcd_Signature (0x0004)
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#define lzxcd_Version (0x0008)
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#define lzxcd_ResetInterval (0x000C)
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#define lzxcd_WindowSize (0x0010)
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#define lzxcd_CacheSize (0x0014)
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#define lzxcd_Unknown1 (0x0018)
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#define lzxcd_SIZEOF (0x001C)
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#define lzxrt_Unknown1 (0x0000)
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#define lzxrt_NumEntries (0x0004)
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#define lzxrt_EntrySize (0x0008)
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#define lzxrt_TableOffset (0x000C)
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#define lzxrt_UncompLen (0x0010)
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#define lzxrt_CompLen (0x0018)
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#define lzxrt_FrameLen (0x0020)
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#define lzxrt_Entries (0x0028)
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#define lzxrt_headerSIZEOF (0x0028)
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/* CHM compression definitions */
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struct mschm_compressor_p {
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struct mschm_compressor base;
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struct mspack_system *system;
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char *temp_file;
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int use_temp_file;
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int error;
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};
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/* CHM decompression definitions */
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struct mschmd_decompress_state {
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struct mschmd_header *chm; /* CHM file being decompressed */
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off_t offset; /* uncompressed offset within folder */
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off_t inoffset; /* offset in input file */
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struct lzxd_stream *state; /* LZX decompressor state */
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struct mspack_system sys; /* special I/O code for decompressor */
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struct mspack_file *infh; /* input file handle */
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struct mspack_file *outfh; /* output file handle */
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};
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struct mschm_decompressor_p {
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struct mschm_decompressor base;
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struct mspack_system *system;
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struct mschmd_decompress_state *d;
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int error;
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};
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#endif
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