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