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87 lines
2 KiB
Plaintext
87 lines
2 KiB
Plaintext
//========================================================================
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//
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// DCTStream.h
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//
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// This file is licensed under the GPLv2 or later
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//
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// Copyright 2005 Jeff Muizelaar <jeff@infidigm.net>
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// Copyright 2005 Martin Kretzschmar <martink@gnome.org>
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// Copyright 2005-2007, 2009-2011, 2017, 2019, 2021 Albert Astals Cid <aacid@kde.org>
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// Copyright 2010 Carlos Garcia Campos <carlosgc@gnome.org>
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// Copyright 2011 Daiki Ueno <ueno@unixuser.org>
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// Copyright 2013 Thomas Freitag <Thomas.Freitag@alfa.de>
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// Copyright 2020 Lluís Batlle i Rossell <viric@viric.name>
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//
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//========================================================================
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#ifndef DCTSTREAM_H
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#define DCTSTREAM_H
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#include "poppler-config.h"
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#include <cstdio>
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#include <cstdlib>
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#include <cstddef>
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#include <csetjmp>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include <cstring>
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#include <cctype>
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#include "goo/gmem.h"
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#include "goo/gfile.h"
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#include "Error.h"
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#include "Object.h"
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#include "Decrypt.h"
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#include "Stream.h"
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extern "C" {
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#include <jpeglib.h>
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#include <jerror.h>
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}
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struct str_src_mgr
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{
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struct jpeg_source_mgr pub;
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JOCTET buffer;
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Stream *str;
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int index;
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};
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struct str_error_mgr
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{
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struct jpeg_error_mgr pub;
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jmp_buf setjmp_buffer;
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int width;
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int height;
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};
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class DCTStream : public FilterStream
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{
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public:
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DCTStream(Stream *strA, int colorXformA, Dict *dict, int recursion);
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~DCTStream() override;
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StreamKind getKind() const override { return strDCT; }
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void reset() override;
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int getChar() override;
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int lookChar() override;
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GooString *getPSFilter(int psLevel, const char *indent) override;
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bool isBinary(bool last = true) const override;
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private:
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void init();
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bool hasGetChars() override { return true; }
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bool readLine();
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int getChars(int nChars, unsigned char *buffer) override;
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int colorXform;
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JSAMPLE *current;
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JSAMPLE *limit;
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struct jpeg_decompress_struct cinfo;
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struct str_error_mgr err;
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struct str_src_mgr src;
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JSAMPARRAY row_buffer;
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};
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#endif
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