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354 lines
10 KiB
354 lines
10 KiB
//C- -*- C++ -*-
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//C- -------------------------------------------------------------------
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//C- DjVuLibre-3.5
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//C- Copyright (c) 2002 Leon Bottou and Yann Le Cun.
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//C- Copyright (c) 2001 AT&T
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//C-
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//C- This software is subject to, and may be distributed under, the
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//C- GNU General Public License, Version 2. The license should have
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//C- accompanied the software or you may obtain a copy of the license
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//C- from the Free Software Foundation at http://www.fsf.org .
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//C-
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//C- This program is distributed in the hope that it will be useful,
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//C- but WITHOUT ANY WARRANTY; without even the implied warranty of
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//C- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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//C- GNU General Public License for more details.
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//C-
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//C- DjVuLibre-3.5 is derived from the DjVu(r) Reference Library
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//C- distributed by Lizardtech Software. On July 19th 2002, Lizardtech
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//C- Software authorized us to replace the original DjVu(r) Reference
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//C- Library notice by the following text (see doc/lizard2002.djvu):
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//C-
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//C- ------------------------------------------------------------------
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//C- | DjVu (r) Reference Library (v. 3.5)
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//C- | Copyright (c) 1999-2001 LizardTech, Inc. All Rights Reserved.
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//C- | The DjVu Reference Library is protected by U.S. Pat. No.
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//C- | 6,058,214 and patents pending.
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//C- |
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//C- | This software is subject to, and may be distributed under, the
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//C- | GNU General Public License, Version 2. The license should have
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//C- | accompanied the software or you may obtain a copy of the license
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//C- | from the Free Software Foundation at http://www.fsf.org .
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//C- |
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//C- | The computer code originally released by LizardTech under this
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//C- | license and unmodified by other parties is deemed "the LIZARDTECH
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//C- | ORIGINAL CODE." Subject to any third party intellectual property
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//C- | claims, LizardTech grants recipient a worldwide, royalty-free,
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//C- | non-exclusive license to make, use, sell, or otherwise dispose of
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//C- | the LIZARDTECH ORIGINAL CODE or of programs derived from the
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//C- | LIZARDTECH ORIGINAL CODE in compliance with the terms of the GNU
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//C- | General Public License. This grant only confers the right to
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//C- | infringe patent claims underlying the LIZARDTECH ORIGINAL CODE to
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//C- | the extent such infringement is reasonably necessary to enable
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//C- | recipient to make, have made, practice, sell, or otherwise dispose
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//C- | of the LIZARDTECH ORIGINAL CODE (or portions thereof) and not to
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//C- | any greater extent that may be necessary to utilize further
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//C- | modifications or combinations.
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//C- |
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//C- | The LIZARDTECH ORIGINAL CODE is provided "AS IS" WITHOUT WARRANTY
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//C- | OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
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//C- | TO ANY WARRANTY OF NON-INFRINGEMENT, OR ANY IMPLIED WARRANTY OF
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//C- | MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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//C- +------------------------------------------------------------------
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//
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// $Id: DjVuDumpHelper.cpp,v 1.9 2003/11/07 22:08:20 leonb Exp $
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// $Name: release_3_5_15 $
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#if NEED_GNUG_PRAGMAS
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# pragma implementation
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#endif
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#include "DjVuDumpHelper.h"
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#include "DataPool.h"
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#include "DjVmDir.h"
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#include "DjVuInfo.h"
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#include "IFFByteStream.h"
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#ifdef HAVE_NAMESPACES
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namespace DJVU {
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# ifdef NOT_DEFINED // Just to fool emacs c++ mode
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}
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#endif
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#endif
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#ifdef putchar
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#undef putchar
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#endif
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struct DjVmInfo
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{
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GP<DjVmDir> dir;
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GPMap<int,DjVmDir::File> map;
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};
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inline static void
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putchar(ByteStream & str, char ch)
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{
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str.write(&ch, 1);
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}
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// ---------- ROUTINES FOR SUMMARIZING CHUNK DATA
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static void
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display_djvu_info(ByteStream & out_str, IFFByteStream &iff,
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GUTF8String, size_t size, DjVmInfo&, int)
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{
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GP<DjVuInfo> ginfo=DjVuInfo::create();
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DjVuInfo &info=*ginfo;
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info.decode(*iff.get_bytestream());
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if (size >= 4)
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out_str.format( "DjVu %dx%d", info.width, info.height);
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if (size >= 5)
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out_str.format( ", v%d", info.version);
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if (size >= 8)
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out_str.format( ", %d dpi", info.dpi);
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if (size >= 8)
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out_str.format( ", gamma=%3.1f", info.gamma);
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}
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static void
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display_djbz(ByteStream & out_str, IFFByteStream &iff,
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GUTF8String, size_t, DjVmInfo&, int)
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{
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out_str.format( "JB2 shared dictionary");
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}
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static void
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display_fgbz(ByteStream & out_str, IFFByteStream &iff,
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GUTF8String, size_t, DjVmInfo&, int)
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{
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out_str.format( "JB2 colors data");
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}
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static void
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display_sjbz(ByteStream & out_str, IFFByteStream &iff,
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GUTF8String, size_t, DjVmInfo&, int)
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{
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out_str.format( "JB2 bilevel data");
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}
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static void
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display_smmr(ByteStream & out_str, IFFByteStream &iff,
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GUTF8String, size_t, DjVmInfo&, int)
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{
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out_str.format( "G4/MMR stencil data");
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}
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static void
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display_iw4(ByteStream & out_str, IFFByteStream &iff,
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GUTF8String, size_t, DjVmInfo&, int)
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{
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GP<ByteStream> gbs = iff.get_bytestream();
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unsigned char serial = gbs->read8();
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unsigned char slices = gbs->read8();
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out_str.format( "IW4 data #%d, %d slices", serial+1, slices);
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if (serial == 0)
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{
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unsigned char major = gbs->read8();
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unsigned char minor = gbs->read8();
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unsigned char xhi = gbs->read8();
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unsigned char xlo = gbs->read8();
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unsigned char yhi = gbs->read8();
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unsigned char ylo = gbs->read8();
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out_str.format( ", v%d.%d (%s), %dx%d", major & 0x7f, minor,
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(major & 0x80 ? "b&w" : "color"), (xhi<<8)+xlo, (yhi<<8)+ylo );
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}
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}
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static void
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display_djvm_dirm(ByteStream & out_str, IFFByteStream & iff,
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GUTF8String head, size_t, DjVmInfo& djvminfo, int)
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{
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GP<DjVmDir> dir = DjVmDir::create();
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dir->decode(iff.get_bytestream());
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GPList<DjVmDir::File> list = dir->get_files_list();
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if (dir->is_indirect())
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{
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out_str.format( "Document directory (indirect, %d files %d pages)",
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dir->get_files_num(), dir->get_pages_num());
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for (GPosition p=list; p; ++p)
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out_str.format( "\n%s%s -> %s", (const char*)head,
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(const char*)list[p]->get_load_name(), (const char*)list[p]->get_save_name() );
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}
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else
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{
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out_str.format( "Document directory (bundled, %d files %d pages)",
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dir->get_files_num(), dir->get_pages_num());
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djvminfo.dir = dir;
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djvminfo.map.empty();
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for (GPosition p=list; p; ++p)
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djvminfo.map[list[p]->offset] = list[p];
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}
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}
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static void
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display_th44(ByteStream & out_str, IFFByteStream & iff,
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GUTF8String, size_t, DjVmInfo & djvminfo, int counter)
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{
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int start_page=-1;
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if (djvminfo.dir)
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{
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GPList<DjVmDir::File> files_list=djvminfo.dir->get_files_list();
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for(GPosition pos=files_list;pos;++pos)
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{
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GP<DjVmDir::File> frec=files_list[pos];
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if (iff.tell()>=frec->offset &&
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iff.tell()<frec->offset+frec->size)
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{
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while(pos && !files_list[pos]->is_page())
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++pos;
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if (pos)
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start_page=files_list[pos]->get_page_num();
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break;
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}
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}
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}
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if (start_page>=0)
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out_str.format( "Thumbnail icon for page %d", start_page+counter+1);
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else
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out_str.format( "Thumbnail icon");
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}
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static void
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display_incl(ByteStream & out_str, IFFByteStream & iff,
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GUTF8String, size_t, DjVmInfo&, int)
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{
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GUTF8String name;
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char ch;
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while(iff.read(&ch, 1) && ch!='\n')
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name += ch;
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out_str.format( "Indirection chunk --> {%s}", (const char *) name);
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}
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static void
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display_anno(ByteStream & out_str, IFFByteStream &iff,
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GUTF8String, size_t, DjVmInfo&, int)
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{
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out_str.format( "Page annotation");
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GUTF8String id;
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iff.short_id(id);
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out_str.format( " (hyperlinks, etc.)");
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}
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static void
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display_text(ByteStream & out_str, IFFByteStream &iff,
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GUTF8String, size_t, DjVmInfo&, int)
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{
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out_str.format( "Hidden text");
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GUTF8String id;
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iff.short_id(id);
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out_str.format( " (text, etc.)");
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}
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struct displaysubr
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{
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const char *id;
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void (*subr)(ByteStream &, IFFByteStream &, GUTF8String,
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size_t, DjVmInfo&, int counter);
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};
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static displaysubr disproutines[] =
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{
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{ "DJVU.INFO", display_djvu_info },
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{ "DJVU.Smmr", display_smmr },
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{ "DJVU.Sjbz", display_sjbz },
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{ "DJVU.Djbz", display_djbz },
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{ "DJVU.FG44", display_iw4 },
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{ "DJVU.BG44", display_iw4 },
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{ "DJVU.FGbz", display_fgbz },
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{ "DJVI.Sjbz", display_sjbz },
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{ "DJVI.Djbz", display_djbz },
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{ "DJVI.FGbz", display_fgbz },
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{ "DJVI.FG44", display_iw4 },
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{ "DJVI.BG44", display_iw4 },
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{ "BM44.BM44", display_iw4 },
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{ "PM44.PM44", display_iw4 },
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{ "DJVM.DIRM", display_djvm_dirm },
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{ "THUM.TH44", display_th44 },
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{ "INCL", display_incl },
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{ "ANTa", display_anno },
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{ "ANTz", display_anno },
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{ "TXTa", display_text },
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{ "TXTz", display_text },
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{ 0, 0 },
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};
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// ---------- ROUTINES FOR DISPLAYING CHUNK STRUCTURE
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static void
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display_chunks(ByteStream & out_str, IFFByteStream &iff,
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const GUTF8String &head, DjVmInfo djvminfo)
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{
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size_t size;
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GUTF8String id, fullid;
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GUTF8String head2 = head + " ";
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GPMap<int,DjVmDir::File> djvmmap;
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int rawoffset;
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GMap<GUTF8String, int> counters;
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while ((size = iff.get_chunk(id, &rawoffset)))
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{
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if (!counters.contains(id)) counters[id]=0;
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else counters[id]++;
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GUTF8String msg;
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msg.format("%s%s [%d] ", (const char *)head, (const char *)id, size);
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out_str.format( "%s", (const char *)msg);
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// Display DJVM is when adequate
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if (djvminfo.dir)
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{
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GP<DjVmDir::File> rec = djvminfo.map[rawoffset];
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if (rec)
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out_str.format( "{%s}", (const char*) rec->get_load_name());
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}
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// Test chunk type
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iff.full_id(fullid);
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for (int i=0; disproutines[i].id; i++)
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if (fullid == disproutines[i].id || id == disproutines[i].id)
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{
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int n = msg.length();
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while (n++ < 14+(int) head.length()) putchar(out_str, ' ');
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if (!iff.composite()) out_str.format( " ");
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(*disproutines[i].subr)(out_str, iff, head2,
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size, djvminfo, counters[id]);
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break;
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}
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// Default display of composite chunk
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out_str.format( "\n");
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if (iff.composite())
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display_chunks(out_str, iff, head2, djvminfo);
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// Terminate
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iff.close_chunk();
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}
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}
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GP<ByteStream>
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DjVuDumpHelper::dump(const GP<DataPool> & pool)
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{
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return dump(pool->get_stream());
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}
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GP<ByteStream>
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DjVuDumpHelper::dump(GP<ByteStream> gstr)
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{
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GP<ByteStream> out_str=ByteStream::create();
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GUTF8String head=" ";
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GP<IFFByteStream> iff=IFFByteStream::create(gstr);
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DjVmInfo djvminfo;
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display_chunks(*out_str, *iff, head, djvminfo);
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return out_str;
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}
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#ifdef HAVE_NAMESPACES
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}
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# ifndef NOT_USING_DJVU_NAMESPACE
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using namespace DJVU;
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# endif
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#endif
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