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// Copyright (C) 1999-2017
// Smithsonian Astrophysical Observatory, Cambridge, MA, USA
// For conditions of distribution and use, see copyright notice in "copyright"
#ifndef __ps_h__
#define __ps_h__
#include <stdint.h>
#include <iostream>
#include <sstream>
#include <iomanip>
using namespace std;
#include "zlib.h"
extern int DebugGZ;
// we need this large for gzip
#define GZIPSIZE 8192
#define BUFSIZE GZIPSIZE*8
#define RLESIZE 128
#define LINELIMIT 80
// Filter Base Class
class Filter {
protected:
unsigned char* buf_;
unsigned char* ptr_;
virtual void cflush() =0;
virtual void eflush(ostream&) =0;
public:
Filter();
virtual ~Filter();
virtual void in(unsigned char) =0;
virtual void out(ostream&) =0;
void flush(ostream&);
friend Filter& operator<<(Filter& f, unsigned char c) {f.in(c); return f;}
friend ostream& operator<<(ostream& s, Filter& f) {f.out(s); return s;}
};
// Compress Base Class
class Compress : public virtual Filter {
public:
virtual void in(unsigned char) =0;
virtual void cflush() =0;
};
class NoCompress : public virtual Filter, public Compress {
public:
void in(unsigned char);
void cflush() {}
};
// RLE
class RLE : public virtual Filter, public Compress {
private:
int state;
unsigned char current;
unsigned char rle[RLESIZE];
int num;
void dumpNonRepeat();
void dumpRepeat();
public:
RLE();
void in(unsigned char);
void cflush();
};
// GZIP
class GZIP : public virtual Filter, public Compress {
private:
z_stream* stream_;
unsigned char* gzip_;
int deflategz(int);
public:
GZIP();
~GZIP();
void in(unsigned char);
void cflush();
};
// Encode Base Class
class Encode : public virtual Filter {
protected:
int level;
int lineCount;
public:
Encode(int);
virtual void out(ostream&) =0;
virtual void eflush(ostream&) =0;
};
// AsciiHex
class AsciiHex : public virtual Filter, public Encode {
public:
AsciiHex(int);
void out(ostream&);
void eflush(ostream&);
};
// Ascii85
class Ascii85 : public virtual Filter, public Encode {
private:
int index;
int byteswap;
union {
unsigned char b[4];
uint32_t c;
} buf85;
void dump(ostream&);
int32_t swap(uint32_t* ptr);
public:
Ascii85(int);
void out(ostream&);
void eflush(ostream&);
};
// PS Filters
class NoCompressAsciiHex :
public virtual Filter, public NoCompress, public AsciiHex {
public:
NoCompressAsciiHex(int l) : AsciiHex(l) {};
};
class NoCompressAscii85 :
public virtual Filter, public NoCompress, public Ascii85 {
public:
NoCompressAscii85(int l) : Ascii85(l) {};
};
class RLEAsciiHex :
public virtual Filter, public RLE, public AsciiHex {
public:
RLEAsciiHex(int l) : AsciiHex(l) {};
};
class RLEAscii85 :
public virtual Filter, public RLE, public Ascii85 {
public:
RLEAscii85(int l) : Ascii85(l) {};
};
class GZIPAsciiHex :
public virtual Filter, public GZIP, public AsciiHex {
public:
GZIPAsciiHex(int l) : AsciiHex(l) {};
};
class GZIPAscii85 :
public virtual Filter, public GZIP, public Ascii85 {
public:
GZIPAscii85(int l) : Ascii85(l) {};
};
#endif
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